(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.cytoscapeCoseBilkent = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
    var FDLayoutConstants = require('./FDLayoutConstants');
    
    function CoSEConstants() {
    }
    
    //CoSEConstants inherits static props in FDLayoutConstants
    for (var prop in FDLayoutConstants) {
      CoSEConstants[prop] = FDLayoutConstants[prop];
    }
    
    CoSEConstants.DEFAULT_USE_MULTI_LEVEL_SCALING = false;
    CoSEConstants.DEFAULT_RADIAL_SEPARATION = FDLayoutConstants.DEFAULT_EDGE_LENGTH;
    CoSEConstants.DEFAULT_COMPONENT_SEPERATION = 60;
    
    module.exports = CoSEConstants;
    
    },{"./FDLayoutConstants":10}],2:[function(require,module,exports){
    var FDLayoutEdge = require('./FDLayoutEdge');
    
    function CoSEEdge(source, target, vEdge) {
      FDLayoutEdge.call(this, source, target, vEdge);
    }
    
    CoSEEdge.prototype = Object.create(FDLayoutEdge.prototype);
    for (var prop in FDLayoutEdge) {
      CoSEEdge[prop] = FDLayoutEdge[prop];
    }
    
    module.exports = CoSEEdge
    
    },{"./FDLayoutEdge":11}],3:[function(require,module,exports){
    var LGraph = require('./LGraph');
    
    function CoSEGraph(parent, graphMgr, vGraph) {
      LGraph.call(this, parent, graphMgr, vGraph);
    }
    
    CoSEGraph.prototype = Object.create(LGraph.prototype);
    for (var prop in LGraph) {
      CoSEGraph[prop] = LGraph[prop];
    }
    
    module.exports = CoSEGraph;
    
    },{"./LGraph":19}],4:[function(require,module,exports){
    var LGraphManager = require('./LGraphManager');
    
    function CoSEGraphManager(layout) {
      LGraphManager.call(this, layout);
    }
    
    CoSEGraphManager.prototype = Object.create(LGraphManager.prototype);
    for (var prop in LGraphManager) {
      CoSEGraphManager[prop] = LGraphManager[prop];
    }
    
    module.exports = CoSEGraphManager;
    
    },{"./LGraphManager":20}],5:[function(require,module,exports){
    var FDLayout = require('./FDLayout');
    var CoSEGraphManager = require('./CoSEGraphManager');
    var CoSEGraph = require('./CoSEGraph');
    var CoSENode = require('./CoSENode');
    var CoSEEdge = require('./CoSEEdge');
    var CoSEConstants = require('./CoSEConstants');
    var FDLayoutConstants = require('./FDLayoutConstants');
    var LayoutConstants = require('./LayoutConstants');
    var Point = require('./Point');
    var PointD = require('./PointD');
    var Layout = require('./Layout');
    var Integer = require('./Integer');
    var IGeometry = require('./IGeometry');
    var LGraph = require('./LGraph');
    var Transform = require('./Transform');
    
    function CoSELayout() {
      FDLayout.call(this);
    }
    
    CoSELayout.prototype = Object.create(FDLayout.prototype);
    
    for (var prop in FDLayout) {
      CoSELayout[prop] = FDLayout[prop];
    }
    
    CoSELayout.prototype.newGraphManager = function () {
      var gm = new CoSEGraphManager(this);
      this.graphManager = gm;
      return gm;
    };
    
    CoSELayout.prototype.newGraph = function (vGraph) {
      return new CoSEGraph(null, this.graphManager, vGraph);
    };
    
    CoSELayout.prototype.newNode = function (vNode) {
      return new CoSENode(this.graphManager, vNode);
    };
    
    CoSELayout.prototype.newEdge = function (vEdge) {
      return new CoSEEdge(null, null, vEdge);
    };
    
    CoSELayout.prototype.initParameters = function () {
      FDLayout.prototype.initParameters.call(this, arguments);
      if (!this.isSubLayout) {
        if (CoSEConstants.DEFAULT_EDGE_LENGTH < 10)
        {
          this.idealEdgeLength = 10;
        }
        else
        {
          this.idealEdgeLength = CoSEConstants.DEFAULT_EDGE_LENGTH;
        }
    
        this.useSmartIdealEdgeLengthCalculation =
                CoSEConstants.DEFAULT_USE_SMART_IDEAL_EDGE_LENGTH_CALCULATION;
        this.springConstant =
                FDLayoutConstants.DEFAULT_SPRING_STRENGTH;
        this.repulsionConstant =
                FDLayoutConstants.DEFAULT_REPULSION_STRENGTH;
        this.gravityConstant =
                FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH;
        this.compoundGravityConstant =
                FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH;
        this.gravityRangeFactor =
                FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR;
        this.compoundGravityRangeFactor =
                FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR;
      }
    };
    
    CoSELayout.prototype.layout = function () {
      var createBendsAsNeeded = LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED;
      if (createBendsAsNeeded)
      {
        this.createBendpoints();
        this.graphManager.resetAllEdges();
      }
    
      this.level = 0;
      return this.classicLayout();
    };
    
    CoSELayout.prototype.classicLayout = function () {
      this.calculateNodesToApplyGravitationTo();
      this.graphManager.calcLowestCommonAncestors();
      this.graphManager.calcInclusionTreeDepths();
      this.graphManager.getRoot().calcEstimatedSize();
      this.calcIdealEdgeLengths();
      if (!this.incremental)
      {
        var forest = this.getFlatForest();
    
        // The graph associated with this layout is flat and a forest
        if (forest.length > 0)
    
        {
          this.positionNodesRadially(forest);
        }
        // The graph associated with this layout is not flat or a forest
        else
        {
          this.positionNodesRandomly();
        }
      }
    
      this.initSpringEmbedder();
      this.runSpringEmbedder();
    
      return true;
    };
    
    CoSELayout.prototype.tick = function() {
      this.totalIterations++;
      
      if (this.totalIterations === this.maxIterations) {
        return true; // Layout is not ended return true
      }
      
      if (this.totalIterations % FDLayoutConstants.CONVERGENCE_CHECK_PERIOD == 0)
      {
        if (this.isConverged())
        {
          return true; // Layout is not ended return true
        }
    
        this.coolingFactor = this.initialCoolingFactor *
                ((this.maxIterations - this.totalIterations) / this.maxIterations);
        this.animationPeriod = Math.ceil(this.initialAnimationPeriod * Math.sqrt(this.coolingFactor));
    
      }
      this.totalDisplacement = 0;
      this.graphManager.updateBounds();
      this.calcSpringForces();
      this.calcRepulsionForces();
      this.calcGravitationalForces();
      this.moveNodes();
      this.animate();
      
      return false; // Layout is not ended yet return false
    };
    
    CoSELayout.prototype.getPositionsData = function() {
      var allNodes = this.graphManager.getAllNodes();
      var pData = {};
      for (var i = 0; i < allNodes.length; i++) {
        var rect = allNodes[i].rect;
        var id = allNodes[i].id;
        pData[id] = {
          id: id,
          x: rect.getCenterX(),
          y: rect.getCenterY(),
          w: rect.width,
          h: rect.height
        };
      }
      
      return pData;
    };
    
    CoSELayout.prototype.runSpringEmbedder = function () {
      this.initialAnimationPeriod = 25;
      this.animationPeriod = this.initialAnimationPeriod;
      var layoutEnded = false;
      
      // If aminate option is 'during' signal that layout is supposed to start iterating
      if ( FDLayoutConstants.ANIMATE === 'during' ) {
        this.emit('layoutstarted');
      }
      else {
        // If aminate option is 'during' tick() function will be called on index.js
        while (!layoutEnded) {
          layoutEnded = this.tick();
        }
    
        this.graphManager.updateBounds();
      }
    };
    
    CoSELayout.prototype.calculateNodesToApplyGravitationTo = function () {
      var nodeList = [];
      var graph;
    
      var graphs = this.graphManager.getGraphs();
      var size = graphs.length;
      var i;
      for (i = 0; i < size; i++)
      {
        graph = graphs[i];
    
        graph.updateConnected();
    
        if (!graph.isConnected)
        {
          nodeList = nodeList.concat(graph.getNodes());
        }
      }
    
      this.graphManager.setAllNodesToApplyGravitation(nodeList);
    };
    
    CoSELayout.prototype.createBendpoints = function () {
      var edges = [];
      edges = edges.concat(this.graphManager.getAllEdges());
      var visited = new HashSet();
      var i;
      for (i = 0; i < edges.length; i++)
      {
        var edge = edges[i];
    
        if (!visited.contains(edge))
        {
          var source = edge.getSource();
          var target = edge.getTarget();
    
          if (source == target)
          {
            edge.getBendpoints().push(new PointD());
            edge.getBendpoints().push(new PointD());
            this.createDummyNodesForBendpoints(edge);
            visited.add(edge);
          }
          else
          {
            var edgeList = [];
    
            edgeList = edgeList.concat(source.getEdgeListToNode(target));
            edgeList = edgeList.concat(target.getEdgeListToNode(source));
    
            if (!visited.contains(edgeList[0]))
            {
              if (edgeList.length > 1)
              {
                var k;
                for (k = 0; k < edgeList.length; k++)
                {
                  var multiEdge = edgeList[k];
                  multiEdge.getBendpoints().push(new PointD());
                  this.createDummyNodesForBendpoints(multiEdge);
                }
              }
              visited.addAll(list);
            }
          }
        }
    
        if (visited.size() == edges.length)
        {
          break;
        }
      }
    };
    
    CoSELayout.prototype.positionNodesRadially = function (forest) {
      // We tile the trees to a grid row by row; first tree starts at (0,0)
      var currentStartingPoint = new Point(0, 0);
      var numberOfColumns = Math.ceil(Math.sqrt(forest.length));
      var height = 0;
      var currentY = 0;
      var currentX = 0;
      var point = new PointD(0, 0);
    
      for (var i = 0; i < forest.length; i++)
      {
        if (i % numberOfColumns == 0)
        {
          // Start of a new row, make the x coordinate 0, increment the
          // y coordinate with the max height of the previous row
          currentX = 0;
          currentY = height;
    
          if (i != 0)
          {
            currentY += CoSEConstants.DEFAULT_COMPONENT_SEPERATION;
          }
    
          height = 0;
        }
    
        var tree = forest[i];
    
        // Find the center of the tree
        var centerNode = Layout.findCenterOfTree(tree);
    
        // Set the staring point of the next tree
        currentStartingPoint.x = currentX;
        currentStartingPoint.y = currentY;
    
        // Do a radial layout starting with the center
        point =
                CoSELayout.radialLayout(tree, centerNode, currentStartingPoint);
    
        if (point.y > height)
        {
          height = Math.floor(point.y);
        }
    
        currentX = Math.floor(point.x + CoSEConstants.DEFAULT_COMPONENT_SEPERATION);
      }
    
      this.transform(
              new PointD(LayoutConstants.WORLD_CENTER_X - point.x / 2,
                      LayoutConstants.WORLD_CENTER_Y - point.y / 2));
    };
    
    CoSELayout.radialLayout = function (tree, centerNode, startingPoint) {
      var radialSep = Math.max(this.maxDiagonalInTree(tree),
              CoSEConstants.DEFAULT_RADIAL_SEPARATION);
      CoSELayout.branchRadialLayout(centerNode, null, 0, 359, 0, radialSep);
      var bounds = LGraph.calculateBounds(tree);
    
      var transform = new Transform();
      transform.setDeviceOrgX(bounds.getMinX());
      transform.setDeviceOrgY(bounds.getMinY());
      transform.setWorldOrgX(startingPoint.x);
      transform.setWorldOrgY(startingPoint.y);
    
      for (var i = 0; i < tree.length; i++)
      {
        var node = tree[i];
        node.transform(transform);
      }
    
      var bottomRight =
              new PointD(bounds.getMaxX(), bounds.getMaxY());
    
      return transform.inverseTransformPoint(bottomRight);
    };
    
    CoSELayout.branchRadialLayout = function (node, parentOfNode, startAngle, endAngle, distance, radialSeparation) {
      // First, position this node by finding its angle.
      var halfInterval = ((endAngle - startAngle) + 1) / 2;
    
      if (halfInterval < 0)
      {
        halfInterval += 180;
      }
    
      var nodeAngle = (halfInterval + startAngle) % 360;
      var teta = (nodeAngle * IGeometry.TWO_PI) / 360;
    
      // Make polar to java cordinate conversion.
      var cos_teta = Math.cos(teta);
      var x_ = distance * Math.cos(teta);
      var y_ = distance * Math.sin(teta);
    
      node.setCenter(x_, y_);
    
      // Traverse all neighbors of this node and recursively call this
      // function.
      var neighborEdges = [];
      neighborEdges = neighborEdges.concat(node.getEdges());
      var childCount = neighborEdges.length;
    
      if (parentOfNode != null)
      {
        childCount--;
      }
    
      var branchCount = 0;
    
      var incEdgesCount = neighborEdges.length;
      var startIndex;
    
      var edges = node.getEdgesBetween(parentOfNode);
    
      // If there are multiple edges, prune them until there remains only one
      // edge.
      while (edges.length > 1)
      {
        //neighborEdges.remove(edges.remove(0));
        var temp = edges[0];
        edges.splice(0, 1);
        var index = neighborEdges.indexOf(temp);
        if (index >= 0) {
          neighborEdges.splice(index, 1);
        }
        incEdgesCount--;
        childCount--;
      }
    
      if (parentOfNode != null)
      {
        //assert edges.length == 1;
        startIndex = (neighborEdges.indexOf(edges[0]) + 1) % incEdgesCount;
      }
      else
      {
        startIndex = 0;
      }
    
      var stepAngle = Math.abs(endAngle - startAngle) / childCount;
    
      for (var i = startIndex;
              branchCount != childCount;
              i = (++i) % incEdgesCount)
      {
        var currentNeighbor =
                neighborEdges[i].getOtherEnd(node);
    
        // Don't back traverse to root node in current tree.
        if (currentNeighbor == parentOfNode)
        {
          continue;
        }
    
        var childStartAngle =
                (startAngle + branchCount * stepAngle) % 360;
        var childEndAngle = (childStartAngle + stepAngle) % 360;
    
        CoSELayout.branchRadialLayout(currentNeighbor,
                node,
                childStartAngle, childEndAngle,
                distance + radialSeparation, radialSeparation);
    
        branchCount++;
      }
    };
    
    CoSELayout.maxDiagonalInTree = function (tree) {
      var maxDiagonal = Integer.MIN_VALUE;
    
      for (var i = 0; i < tree.length; i++)
      {
        var node = tree[i];
        var diagonal = node.getDiagonal();
    
        if (diagonal > maxDiagonal)
        {
          maxDiagonal = diagonal;
        }
      }
    
      return maxDiagonal;
    };
    
    CoSELayout.prototype.calcRepulsionRange = function () {
      // formula is 2 x (level + 1) x idealEdgeLength
      return (2 * (this.level + 1) * this.idealEdgeLength);
    };
    
    module.exports = CoSELayout;
    
    },{"./CoSEConstants":1,"./CoSEEdge":2,"./CoSEGraph":3,"./CoSEGraphManager":4,"./CoSENode":6,"./FDLayout":9,"./FDLayoutConstants":10,"./IGeometry":15,"./Integer":17,"./LGraph":19,"./Layout":23,"./LayoutConstants":24,"./Point":25,"./PointD":26,"./Transform":30}],6:[function(require,module,exports){
    var FDLayoutNode = require('./FDLayoutNode');
    var IMath = require('./IMath');
    
    function CoSENode(gm, loc, size, vNode) {
      FDLayoutNode.call(this, gm, loc, size, vNode);
    }
    
    
    CoSENode.prototype = Object.create(FDLayoutNode.prototype);
    for (var prop in FDLayoutNode) {
      CoSENode[prop] = FDLayoutNode[prop];
    }
    
    CoSENode.prototype.move = function ()
    {
      var layout = this.graphManager.getLayout();
      this.displacementX = layout.coolingFactor *
              (this.springForceX + this.repulsionForceX + this.gravitationForceX);
      this.displacementY = layout.coolingFactor *
              (this.springForceY + this.repulsionForceY + this.gravitationForceY);
    
    
      if (Math.abs(this.displacementX) > layout.coolingFactor * layout.maxNodeDisplacement)
      {
        this.displacementX = layout.coolingFactor * layout.maxNodeDisplacement *
                IMath.sign(this.displacementX);
      }
    
      if (Math.abs(this.displacementY) > layout.coolingFactor * layout.maxNodeDisplacement)
      {
        this.displacementY = layout.coolingFactor * layout.maxNodeDisplacement *
                IMath.sign(this.displacementY);
      }
    
      // a simple node, just move it
      if (this.child == null)
      {
        this.moveBy(this.displacementX, this.displacementY);
      }
      // an empty compound node, again just move it
      else if (this.child.getNodes().length == 0)
      {
        this.moveBy(this.displacementX, this.displacementY);
      }
      // non-empty compound node, propogate movement to children as well
      else
      {
        this.propogateDisplacementToChildren(this.displacementX,
                this.displacementY);
      }
    
      layout.totalDisplacement +=
              Math.abs(this.displacementX) + Math.abs(this.displacementY);
    
      this.springForceX = 0;
      this.springForceY = 0;
      this.repulsionForceX = 0;
      this.repulsionForceY = 0;
      this.gravitationForceX = 0;
      this.gravitationForceY = 0;
      this.displacementX = 0;
      this.displacementY = 0;
    };
    
    CoSENode.prototype.propogateDisplacementToChildren = function (dX, dY)
    {
      var nodes = this.getChild().getNodes();
      var node;
      for (var i = 0; i < nodes.length; i++)
      {
        node = nodes[i];
        if (node.getChild() == null)
        {
          node.moveBy(dX, dY);
          node.displacementX += dX;
          node.displacementY += dY;
        }
        else
        {
          node.propogateDisplacementToChildren(dX, dY);
        }
      }
    };
    
    CoSENode.prototype.setPred1 = function (pred1)
    {
      this.pred1 = pred1;
    };
    
    CoSENode.prototype.getPred1 = function ()
    {
      return pred1;
    };
    
    CoSENode.prototype.getPred2 = function ()
    {
      return pred2;
    };
    
    CoSENode.prototype.setNext = function (next)
    {
      this.next = next;
    };
    
    CoSENode.prototype.getNext = function ()
    {
      return next;
    };
    
    CoSENode.prototype.setProcessed = function (processed)
    {
      this.processed = processed;
    };
    
    CoSENode.prototype.isProcessed = function ()
    {
      return processed;
    };
    
    module.exports = CoSENode;
    
    },{"./FDLayoutNode":12,"./IMath":16}],7:[function(require,module,exports){
    function DimensionD(width, height) {
      this.width = 0;
      this.height = 0;
      if (width !== null && height !== null) {
        this.height = height;
        this.width = width;
      }
    }
    
    DimensionD.prototype.getWidth = function ()
    {
      return this.width;
    };
    
    DimensionD.prototype.setWidth = function (width)
    {
      this.width = width;
    };
    
    DimensionD.prototype.getHeight = function ()
    {
      return this.height;
    };
    
    DimensionD.prototype.setHeight = function (height)
    {
      this.height = height;
    };
    
    module.exports = DimensionD;
    
    },{}],8:[function(require,module,exports){
    function Emitter(){
      this.listeners = [];
    }
    
    var p = Emitter.prototype;
    
    p.addListener = function( event, callback ){
      this.listeners.push({
        event: event,
        callback: callback
      });
    };
    
    p.removeListener = function( event, callback ){
      for( var i = this.listeners.length; i >= 0; i-- ){
        var l = this.listeners[i];
    
        if( l.event === event && l.callback === callback ){
          this.listeners.splice( i, 1 );
        }
      }
    };
    
    p.emit = function( event, data ){
      for( var i = 0; i < this.listeners.length; i++ ){
        var l = this.listeners[i];
    
        if( event === l.event ){
          l.callback( data );
        }
      }
    };
    
    module.exports = Emitter;
    
    },{}],9:[function(require,module,exports){
    var Layout = require('./Layout');
    var FDLayoutConstants = require('./FDLayoutConstants');
    var LayoutConstants = require('./LayoutConstants');
    var IGeometry = require('./IGeometry');
    var IMath = require('./IMath');
    
    function FDLayout() {
      Layout.call(this);
    
      this.useSmartIdealEdgeLengthCalculation = FDLayoutConstants.DEFAULT_USE_SMART_IDEAL_EDGE_LENGTH_CALCULATION;
      this.idealEdgeLength = FDLayoutConstants.DEFAULT_EDGE_LENGTH;
      this.springConstant = FDLayoutConstants.DEFAULT_SPRING_STRENGTH;
      this.repulsionConstant = FDLayoutConstants.DEFAULT_REPULSION_STRENGTH;
      this.gravityConstant = FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH;
      this.compoundGravityConstant = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH;
      this.gravityRangeFactor = FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR;
      this.compoundGravityRangeFactor = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR;
      this.displacementThresholdPerNode = (3.0 * FDLayoutConstants.DEFAULT_EDGE_LENGTH) / 100;
      this.coolingFactor = 1.0;
      this.initialCoolingFactor = 1.0;
      this.totalDisplacement = 0.0;
      this.oldTotalDisplacement = 0.0;
      this.maxIterations = FDLayoutConstants.MAX_ITERATIONS;
    }
    
    FDLayout.prototype = Object.create(Layout.prototype);
    
    for (var prop in Layout) {
      FDLayout[prop] = Layout[prop];
    }
    
    FDLayout.prototype.initParameters = function () {
      Layout.prototype.initParameters.call(this, arguments);
    
      if (this.layoutQuality == LayoutConstants.DRAFT_QUALITY)
      {
        this.displacementThresholdPerNode += 0.30;
        this.maxIterations *= 0.8;
      }
      else if (this.layoutQuality == LayoutConstants.PROOF_QUALITY)
      {
        this.displacementThresholdPerNode -= 0.30;
        this.maxIterations *= 1.2;
      }
    
      this.totalIterations = 0;
      this.notAnimatedIterations = 0;
    
    //    this.useFRGridVariant = layoutOptionsPack.smartRepulsionRangeCalc;
    };
    
    FDLayout.prototype.calcIdealEdgeLengths = function () {
      var edge;
      var lcaDepth;
      var source;
      var target;
      var sizeOfSourceInLca;
      var sizeOfTargetInLca;
    
      var allEdges = this.getGraphManager().getAllEdges();
      for (var i = 0; i < allEdges.length; i++)
      {
        edge = allEdges[i];
    
        edge.idealLength = this.idealEdgeLength;
    
        if (edge.isInterGraph)
        {
          source = edge.getSource();
          target = edge.getTarget();
    
          sizeOfSourceInLca = edge.getSourceInLca().getEstimatedSize();
          sizeOfTargetInLca = edge.getTargetInLca().getEstimatedSize();
    
          if (this.useSmartIdealEdgeLengthCalculation)
          {
            edge.idealLength += sizeOfSourceInLca + sizeOfTargetInLca -
                    2 * LayoutConstants.SIMPLE_NODE_SIZE;
          }
    
          lcaDepth = edge.getLca().getInclusionTreeDepth();
    
          edge.idealLength += FDLayoutConstants.DEFAULT_EDGE_LENGTH *
                  FDLayoutConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR *
                  (source.getInclusionTreeDepth() +
                          target.getInclusionTreeDepth() - 2 * lcaDepth);
        }
      }
    };
    
    FDLayout.prototype.initSpringEmbedder = function () {
    
      if (this.incremental)
      {
        this.coolingFactor = 0.8;
        this.initialCoolingFactor = 0.8;
        this.maxNodeDisplacement =
                FDLayoutConstants.MAX_NODE_DISPLACEMENT_INCREMENTAL;
      }
      else
      {
        this.coolingFactor = 1.0;
        this.initialCoolingFactor = 1.0;
        this.maxNodeDisplacement =
                FDLayoutConstants.MAX_NODE_DISPLACEMENT;
      }
    
      this.maxIterations =
              Math.max(this.getAllNodes().length * 5, this.maxIterations);
    
      this.totalDisplacementThreshold =
              this.displacementThresholdPerNode * this.getAllNodes().length;
    
      this.repulsionRange = this.calcRepulsionRange();
    };
    
    FDLayout.prototype.calcSpringForces = function () {
      var lEdges = this.getAllEdges();
      var edge;
    
      for (var i = 0; i < lEdges.length; i++)
      {
        edge = lEdges[i];
    
        this.calcSpringForce(edge, edge.idealLength);
      }
    };
    
    FDLayout.prototype.calcRepulsionForces = function () {
      var i, j;
      var nodeA, nodeB;
      var lNodes = this.getAllNodes();
    
      for (i = 0; i < lNodes.length; i++)
      {
        nodeA = lNodes[i];
    
        for (j = i + 1; j < lNodes.length; j++)
        {
          nodeB = lNodes[j];
    
          // If both nodes are not members of the same graph, skip.
          if (nodeA.getOwner() != nodeB.getOwner())
          {
            continue;
          }
    
          this.calcRepulsionForce(nodeA, nodeB);
        }
      }
    };
    
    FDLayout.prototype.calcGravitationalForces = function () {
      var node;
      var lNodes = this.getAllNodesToApplyGravitation();
    
      for (var i = 0; i < lNodes.length; i++)
      {
        node = lNodes[i];
        this.calcGravitationalForce(node);
      }
    };
    
    FDLayout.prototype.moveNodes = function () {
      var lNodes = this.getAllNodes();
      var node;
    
      for (var i = 0; i < lNodes.length; i++)
      {
        node = lNodes[i];
        node.move();
      }
    }
    
    FDLayout.prototype.calcSpringForce = function (edge, idealLength) {
      var sourceNode = edge.getSource();
      var targetNode = edge.getTarget();
    
      var length;
      var springForce;
      var springForceX;
      var springForceY;
    
      // Update edge length
      if (this.uniformLeafNodeSizes &&
              sourceNode.getChild() == null && targetNode.getChild() == null)
      {
        edge.updateLengthSimple();
      }
      else
      {
        edge.updateLength();
    
        if (edge.isOverlapingSourceAndTarget)
        {
          return;
        }
      }
    
      length = edge.getLength();
    
      // Calculate spring forces
      springForce = this.springConstant * (length - idealLength);
    
      // Project force onto x and y axes
      springForceX = springForce * (edge.lengthX / length);
      springForceY = springForce * (edge.lengthY / length);
    
      // Apply forces on the end nodes
      sourceNode.springForceX += springForceX;
      sourceNode.springForceY += springForceY;
      targetNode.springForceX -= springForceX;
      targetNode.springForceY -= springForceY;
    };
    
    FDLayout.prototype.calcRepulsionForce = function (nodeA, nodeB) {
      var rectA = nodeA.getRect();
      var rectB = nodeB.getRect();
      var overlapAmount = new Array(2);
      var clipPoints = new Array(4);
      var distanceX;
      var distanceY;
      var distanceSquared;
      var distance;
      var repulsionForce;
      var repulsionForceX;
      var repulsionForceY;
    
      if (rectA.intersects(rectB))// two nodes overlap
      {
        // calculate separation amount in x and y directions
        IGeometry.calcSeparationAmount(rectA,
                rectB,
                overlapAmount,
                FDLayoutConstants.DEFAULT_EDGE_LENGTH / 2.0);
    
        repulsionForceX = overlapAmount[0];
        repulsionForceY = overlapAmount[1];
      }
      else// no overlap
      {
        // calculate distance
    
        if (this.uniformLeafNodeSizes &&
                nodeA.getChild() == null && nodeB.getChild() == null)// simply base repulsion on distance of node centers
        {
          distanceX = rectB.getCenterX() - rectA.getCenterX();
          distanceY = rectB.getCenterY() - rectA.getCenterY();
        }
        else// use clipping points
        {
          IGeometry.getIntersection(rectA, rectB, clipPoints);
    
          distanceX = clipPoints[2] - clipPoints[0];
          distanceY = clipPoints[3] - clipPoints[1];
        }
    
        // No repulsion range. FR grid variant should take care of this.
        if (Math.abs(distanceX) < FDLayoutConstants.MIN_REPULSION_DIST)
        {
          distanceX = IMath.sign(distanceX) *
                  FDLayoutConstants.MIN_REPULSION_DIST;
        }
    
        if (Math.abs(distanceY) < FDLayoutConstants.MIN_REPULSION_DIST)
        {
          distanceY = IMath.sign(distanceY) *
                  FDLayoutConstants.MIN_REPULSION_DIST;
        }
    
        distanceSquared = distanceX * distanceX + distanceY * distanceY;
        distance = Math.sqrt(distanceSquared);
    
        repulsionForce = this.repulsionConstant / distanceSquared;
    
        // Project force onto x and y axes
        repulsionForceX = repulsionForce * distanceX / distance;
        repulsionForceY = repulsionForce * distanceY / distance;
      }
    
      // Apply forces on the two nodes
      nodeA.repulsionForceX -= repulsionForceX;
      nodeA.repulsionForceY -= repulsionForceY;
      nodeB.repulsionForceX += repulsionForceX;
      nodeB.repulsionForceY += repulsionForceY;
    };
    
    FDLayout.prototype.calcGravitationalForce = function (node) {
      var ownerGraph;
      var ownerCenterX;
      var ownerCenterY;
      var distanceX;
      var distanceY;
      var absDistanceX;
      var absDistanceY;
      var estimatedSize;
      ownerGraph = node.getOwner();
    
      ownerCenterX = (ownerGraph.getRight() + ownerGraph.getLeft()) / 2;
      ownerCenterY = (ownerGraph.getTop() + ownerGraph.getBottom()) / 2;
      distanceX = node.getCenterX() - ownerCenterX;
      distanceY = node.getCenterY() - ownerCenterY;
      absDistanceX = Math.abs(distanceX);
      absDistanceY = Math.abs(distanceY);
    
      if (node.getOwner() == this.graphManager.getRoot())// in the root graph
      {
        Math.floor(80);
        estimatedSize = Math.floor(ownerGraph.getEstimatedSize() *
                this.gravityRangeFactor);
    
        if (absDistanceX > estimatedSize || absDistanceY > estimatedSize)
        {
          node.gravitationForceX = -this.gravityConstant * distanceX;
          node.gravitationForceY = -this.gravityConstant * distanceY;
        }
      }
      else// inside a compound
      {
        estimatedSize = Math.floor((ownerGraph.getEstimatedSize() *
                this.compoundGravityRangeFactor));
    
        if (absDistanceX > estimatedSize || absDistanceY > estimatedSize)
        {
          node.gravitationForceX = -this.gravityConstant * distanceX *
                  this.compoundGravityConstant;
          node.gravitationForceY = -this.gravityConstant * distanceY *
                  this.compoundGravityConstant;
        }
      }
    };
    
    FDLayout.prototype.isConverged = function () {
      var converged;
      var oscilating = false;
    
      if (this.totalIterations > this.maxIterations / 3)
      {
        oscilating =
                Math.abs(this.totalDisplacement - this.oldTotalDisplacement) < 2;
      }
    
      converged = this.totalDisplacement < this.totalDisplacementThreshold;
    
      this.oldTotalDisplacement = this.totalDisplacement;
    
      return converged || oscilating;
    };
    
    FDLayout.prototype.animate = function () {
      if (this.animationDuringLayout && !this.isSubLayout)
      {
        if (this.notAnimatedIterations == this.animationPeriod)
        {
          this.update();
          this.notAnimatedIterations = 0;
        }
        else
        {
          this.notAnimatedIterations++;
        }
      }
    };
    
    FDLayout.prototype.calcRepulsionRange = function () {
      return 0.0;
    };
    
    module.exports = FDLayout;
    
    },{"./FDLayoutConstants":10,"./IGeometry":15,"./IMath":16,"./Layout":23,"./LayoutConstants":24}],10:[function(require,module,exports){
    var LayoutConstants = require('./LayoutConstants');
    
    function FDLayoutConstants() {
    }
    
    //FDLayoutConstants inherits static props in LayoutConstants
    for (var prop in LayoutConstants) {
      FDLayoutConstants[prop] = LayoutConstants[prop];
    }
    
    FDLayoutConstants.MAX_ITERATIONS = 2500;
    
    FDLayoutConstants.DEFAULT_EDGE_LENGTH = 50;
    FDLayoutConstants.DEFAULT_SPRING_STRENGTH = 0.45;
    FDLayoutConstants.DEFAULT_REPULSION_STRENGTH = 4500.0;
    FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH = 0.4;
    FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH = 1.0;
    FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR = 3.8;
    FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR = 1.5;
    FDLayoutConstants.DEFAULT_USE_SMART_IDEAL_EDGE_LENGTH_CALCULATION = true;
    FDLayoutConstants.DEFAULT_USE_SMART_REPULSION_RANGE_CALCULATION = true;
    FDLayoutConstants.MAX_NODE_DISPLACEMENT_INCREMENTAL = 100.0;
    FDLayoutConstants.MAX_NODE_DISPLACEMENT = FDLayoutConstants.MAX_NODE_DISPLACEMENT_INCREMENTAL * 3;
    FDLayoutConstants.MIN_REPULSION_DIST = FDLayoutConstants.DEFAULT_EDGE_LENGTH / 10.0;
    FDLayoutConstants.CONVERGENCE_CHECK_PERIOD = 100;
    FDLayoutConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR = 0.1;
    FDLayoutConstants.MIN_EDGE_LENGTH = 1;
    FDLayoutConstants.GRID_CALCULATION_CHECK_PERIOD = 10;
    
    module.exports = FDLayoutConstants;
    
    },{"./LayoutConstants":24}],11:[function(require,module,exports){
    var LEdge = require('./LEdge');
    var FDLayoutConstants = require('./FDLayoutConstants');
    
    function FDLayoutEdge(source, target, vEdge) {
      LEdge.call(this, source, target, vEdge);
      this.idealLength = FDLayoutConstants.DEFAULT_EDGE_LENGTH;
    }
    
    FDLayoutEdge.prototype = Object.create(LEdge.prototype);
    
    for (var prop in LEdge) {
      FDLayoutEdge[prop] = LEdge[prop];
    }
    
    module.exports = FDLayoutEdge;
    
    },{"./FDLayoutConstants":10,"./LEdge":18}],12:[function(require,module,exports){
    var LNode = require('./LNode');
    
    function FDLayoutNode(gm, loc, size, vNode) {
      // alternative constructor is handled inside LNode
      LNode.call(this, gm, loc, size, vNode);
      //Spring, repulsion and gravitational forces acting on this node
      this.springForceX = 0;
      this.springForceY = 0;
      this.repulsionForceX = 0;
      this.repulsionForceY = 0;
      this.gravitationForceX = 0;
      this.gravitationForceY = 0;
      //Amount by which this node is to be moved in this iteration
      this.displacementX = 0;
      this.displacementY = 0;
    
      //Start and finish grid coordinates that this node is fallen into
      this.startX = 0;
      this.finishX = 0;
      this.startY = 0;
      this.finishY = 0;
    
      //Geometric neighbors of this node
      this.surrounding = [];
    }
    
    FDLayoutNode.prototype = Object.create(LNode.prototype);
    
    for (var prop in LNode) {
      FDLayoutNode[prop] = LNode[prop];
    }
    
    FDLayoutNode.prototype.setGridCoordinates = function (_startX, _finishX, _startY, _finishY)
    {
      this.startX = _startX;
      this.finishX = _finishX;
      this.startY = _startY;
      this.finishY = _finishY;
    
    };
    
    module.exports = FDLayoutNode;
    
    },{"./LNode":22}],13:[function(require,module,exports){
    var UniqueIDGeneretor = require('./UniqueIDGeneretor');
    
    function HashMap() {
      this.map = {};
      this.keys = [];
    }
    
    HashMap.prototype.put = function (key, value) {
      var theId = UniqueIDGeneretor.createID(key);
      if (!this.contains(theId)) {
        this.map[theId] = value;
        this.keys.push(key);
      }
    };
    
    HashMap.prototype.contains = function (key) {
      var theId = UniqueIDGeneretor.createID(key);
      return this.map[key] != null;
    };
    
    HashMap.prototype.get = function (key) {
      var theId = UniqueIDGeneretor.createID(key);
      return this.map[theId];
    };
    
    HashMap.prototype.keySet = function () {
      return this.keys;
    };
    
    module.exports = HashMap;
    
    },{"./UniqueIDGeneretor":31}],14:[function(require,module,exports){
    var UniqueIDGeneretor = require('./UniqueIDGeneretor');
    
    function HashSet() {
      this.set = {};
    }
    ;
    
    HashSet.prototype.add = function (obj) {
      var theId = UniqueIDGeneretor.createID(obj);
      if (!this.contains(theId))
        this.set[theId] = obj;
    };
    
    HashSet.prototype.remove = function (obj) {
      delete this.set[UniqueIDGeneretor.createID(obj)];
    };
    
    HashSet.prototype.clear = function () {
      this.set = {};
    };
    
    HashSet.prototype.contains = function (obj) {
      return this.set[UniqueIDGeneretor.createID(obj)] == obj;
    };
    
    HashSet.prototype.isEmpty = function () {
      return this.size() === 0;
    };
    
    HashSet.prototype.size = function () {
      return Object.keys(this.set).length;
    };
    
    //concats this.set to the given list
    HashSet.prototype.addAllTo = function (list) {
      var keys = Object.keys(this.set);
      var length = keys.length;
      for (var i = 0; i < length; i++) {
        list.push(this.set[keys[i]]);
      }
    };
    
    HashSet.prototype.size = function () {
      return Object.keys(this.set).length;
    };
    
    HashSet.prototype.addAll = function (list) {
      var s = list.length;
      for (var i = 0; i < s; i++) {
        var v = list[i];
        this.add(v);
      }
    };
    
    module.exports = HashSet;
    
    },{"./UniqueIDGeneretor":31}],15:[function(require,module,exports){
    function IGeometry() {
    }
    
    IGeometry.calcSeparationAmount = function (rectA, rectB, overlapAmount, separationBuffer)
    {
      if (!rectA.intersects(rectB)) {
        throw "assert failed";
      }
      var directions = new Array(2);
      IGeometry.decideDirectionsForOverlappingNodes(rectA, rectB, directions);
      overlapAmount[0] = Math.min(rectA.getRight(), rectB.getRight()) -
              Math.max(rectA.x, rectB.x);
      overlapAmount[1] = Math.min(rectA.getBottom(), rectB.getBottom()) -
              Math.max(rectA.y, rectB.y);
      // update the overlapping amounts for the following cases:
      if ((rectA.getX() <= rectB.getX()) && (rectA.getRight() >= rectB.getRight()))
      {
        overlapAmount[0] += Math.min((rectB.getX() - rectA.getX()),
                (rectA.getRight() - rectB.getRight()));
      }
      else if ((rectB.getX() <= rectA.getX()) && (rectB.getRight() >= rectA.getRight()))
      {
        overlapAmount[0] += Math.min((rectA.getX() - rectB.getX()),
                (rectB.getRight() - rectA.getRight()));
      }
      if ((rectA.getY() <= rectB.getY()) && (rectA.getBottom() >= rectB.getBottom()))
      {
        overlapAmount[1] += Math.min((rectB.getY() - rectA.getY()),
                (rectA.getBottom() - rectB.getBottom()));
      }
      else if ((rectB.getY() <= rectA.getY()) && (rectB.getBottom() >= rectA.getBottom()))
      {
        overlapAmount[1] += Math.min((rectA.getY() - rectB.getY()),
                (rectB.getBottom() - rectA.getBottom()));
      }
    
      // find slope of the line passes two centers
      var slope = Math.abs((rectB.getCenterY() - rectA.getCenterY()) /
              (rectB.getCenterX() - rectA.getCenterX()));
      // if centers are overlapped
      if ((rectB.getCenterY() == rectA.getCenterY()) &&
              (rectB.getCenterX() == rectA.getCenterX()))
      {
        // assume the slope is 1 (45 degree)
        slope = 1.0;
      }
    
      var moveByY = slope * overlapAmount[0];
      var moveByX = overlapAmount[1] / slope;
      if (overlapAmount[0] < moveByX)
      {
        moveByX = overlapAmount[0];
      }
      else
      {
        moveByY = overlapAmount[1];
      }
      // return half the amount so that if each rectangle is moved by these
      // amounts in opposite directions, overlap will be resolved
      overlapAmount[0] = -1 * directions[0] * ((moveByX / 2) + separationBuffer);
      overlapAmount[1] = -1 * directions[1] * ((moveByY / 2) + separationBuffer);
    }
    
    IGeometry.decideDirectionsForOverlappingNodes = function (rectA, rectB, directions)
    {
      if (rectA.getCenterX() < rectB.getCenterX())
      {
        directions[0] = -1;
      }
      else
      {
        directions[0] = 1;
      }
    
      if (rectA.getCenterY() < rectB.getCenterY())
      {
        directions[1] = -1;
      }
      else
      {
        directions[1] = 1;
      }
    }
    
    IGeometry.getIntersection2 = function (rectA, rectB, result)
    {
      //result[0-1] will contain clipPoint of rectA, result[2-3] will contain clipPoint of rectB
      var p1x = rectA.getCenterX();
      var p1y = rectA.getCenterY();
      var p2x = rectB.getCenterX();
      var p2y = rectB.getCenterY();
    
      //if two rectangles intersect, then clipping points are centers
      if (rectA.intersects(rectB))
      {
        result[0] = p1x;
        result[1] = p1y;
        result[2] = p2x;
        result[3] = p2y;
        return true;
      }
      //variables for rectA
      var topLeftAx = rectA.getX();
      var topLeftAy = rectA.getY();
      var topRightAx = rectA.getRight();
      var bottomLeftAx = rectA.getX();
      var bottomLeftAy = rectA.getBottom();
      var bottomRightAx = rectA.getRight();
      var halfWidthA = rectA.getWidthHalf();
      var halfHeightA = rectA.getHeightHalf();
      //variables for rectB
      var topLeftBx = rectB.getX();
      var topLeftBy = rectB.getY();
      var topRightBx = rectB.getRight();
      var bottomLeftBx = rectB.getX();
      var bottomLeftBy = rectB.getBottom();
      var bottomRightBx = rectB.getRight();
      var halfWidthB = rectB.getWidthHalf();
      var halfHeightB = rectB.getHeightHalf();
      //flag whether clipping points are found
      var clipPointAFound = false;
      var clipPointBFound = false;
    
      // line is vertical
      if (p1x == p2x)
      {
        if (p1y > p2y)
        {
          result[0] = p1x;
          result[1] = topLeftAy;
          result[2] = p2x;
          result[3] = bottomLeftBy;
          return false;
        }
        else if (p1y < p2y)
        {
          result[0] = p1x;
          result[1] = bottomLeftAy;
          result[2] = p2x;
          result[3] = topLeftBy;
          return false;
        }
        else
        {
          //not line, return null;
        }
      }
      // line is horizontal
      else if (p1y == p2y)
      {
        if (p1x > p2x)
        {
          result[0] = topLeftAx;
          result[1] = p1y;
          result[2] = topRightBx;
          result[3] = p2y;
          return false;
        }
        else if (p1x < p2x)
        {
          result[0] = topRightAx;
          result[1] = p1y;
          result[2] = topLeftBx;
          result[3] = p2y;
          return false;
        }
        else
        {
          //not valid line, return null;
        }
      }
      else
      {
        //slopes of rectA's and rectB's diagonals
        var slopeA = rectA.height / rectA.width;
        var slopeB = rectB.height / rectB.width;
    
        //slope of line between center of rectA and center of rectB
        var slopePrime = (p2y - p1y) / (p2x - p1x);
        var cardinalDirectionA;
        var cardinalDirectionB;
        var tempPointAx;
        var tempPointAy;
        var tempPointBx;
        var tempPointBy;
    
        //determine whether clipping point is the corner of nodeA
        if ((-slopeA) == slopePrime)
        {
          if (p1x > p2x)
          {
            result[0] = bottomLeftAx;
            result[1] = bottomLeftAy;
            clipPointAFound = true;
          }
          else
          {
            result[0] = topRightAx;
            result[1] = topLeftAy;
            clipPointAFound = true;
          }
        }
        else if (slopeA == slopePrime)
        {
          if (p1x > p2x)
          {
            result[0] = topLeftAx;
            result[1] = topLeftAy;
            clipPointAFound = true;
          }
          else
          {
            result[0] = bottomRightAx;
            result[1] = bottomLeftAy;
            clipPointAFound = true;
          }
        }
    
        //determine whether clipping point is the corner of nodeB
        if ((-slopeB) == slopePrime)
        {
          if (p2x > p1x)
          {
            result[2] = bottomLeftBx;
            result[3] = bottomLeftBy;
            clipPointBFound = true;
          }
          else
          {
            result[2] = topRightBx;
            result[3] = topLeftBy;
            clipPointBFound = true;
          }
        }
        else if (slopeB == slopePrime)
        {
          if (p2x > p1x)
          {
            result[2] = topLeftBx;
            result[3] = topLeftBy;
            clipPointBFound = true;
          }
          else
          {
            result[2] = bottomRightBx;
            result[3] = bottomLeftBy;
            clipPointBFound = true;
          }
        }
    
        //if both clipping points are corners
        if (clipPointAFound && clipPointBFound)
        {
          return false;
        }
    
        //determine Cardinal Direction of rectangles
        if (p1x > p2x)
        {
          if (p1y > p2y)
          {
            cardinalDirectionA = IGeometry.getCardinalDirection(slopeA, slopePrime, 4);
            cardinalDirectionB = IGeometry.getCardinalDirection(slopeB, slopePrime, 2);
          }
          else
          {
            cardinalDirectionA = IGeometry.getCardinalDirection(-slopeA, slopePrime, 3);
            cardinalDirectionB = IGeometry.getCardinalDirection(-slopeB, slopePrime, 1);
          }
        }
        else
        {
          if (p1y > p2y)
          {
            cardinalDirectionA = IGeometry.getCardinalDirection(-slopeA, slopePrime, 1);
            cardinalDirectionB = IGeometry.getCardinalDirection(-slopeB, slopePrime, 3);
          }
          else
          {
            cardinalDirectionA = IGeometry.getCardinalDirection(slopeA, slopePrime, 2);
            cardinalDirectionB = IGeometry.getCardinalDirection(slopeB, slopePrime, 4);
          }
        }
        //calculate clipping Point if it is not found before
        if (!clipPointAFound)
        {
          switch (cardinalDirectionA)
          {
            case 1:
              tempPointAy = topLeftAy;
              tempPointAx = p1x + (-halfHeightA) / slopePrime;
              result[0] = tempPointAx;
              result[1] = tempPointAy;
              break;
            case 2:
              tempPointAx = bottomRightAx;
              tempPointAy = p1y + halfWidthA * slopePrime;
              result[0] = tempPointAx;
              result[1] = tempPointAy;
              break;
            case 3:
              tempPointAy = bottomLeftAy;
              tempPointAx = p1x + halfHeightA / slopePrime;
              result[0] = tempPointAx;
              result[1] = tempPointAy;
              break;
            case 4:
              tempPointAx = bottomLeftAx;
              tempPointAy = p1y + (-halfWidthA) * slopePrime;
              result[0] = tempPointAx;
              result[1] = tempPointAy;
              break;
          }
        }
        if (!clipPointBFound)
        {
          switch (cardinalDirectionB)
          {
            case 1:
              tempPointBy = topLeftBy;
              tempPointBx = p2x + (-halfHeightB) / slopePrime;
              result[2] = tempPointBx;
              result[3] = tempPointBy;
              break;
            case 2:
              tempPointBx = bottomRightBx;
              tempPointBy = p2y + halfWidthB * slopePrime;
              result[2] = tempPointBx;
              result[3] = tempPointBy;
              break;
            case 3:
              tempPointBy = bottomLeftBy;
              tempPointBx = p2x + halfHeightB / slopePrime;
              result[2] = tempPointBx;
              result[3] = tempPointBy;
              break;
            case 4:
              tempPointBx = bottomLeftBx;
              tempPointBy = p2y + (-halfWidthB) * slopePrime;
              result[2] = tempPointBx;
              result[3] = tempPointBy;
              break;
          }
        }
      }
      return false;
    }
    
    IGeometry.getCardinalDirection = function (slope, slopePrime, line)
    {
      if (slope > slopePrime)
      {
        return line;
      }
      else
      {
        return 1 + line % 4;
      }
    }
    
    IGeometry.getIntersection = function (s1, s2, f1, f2)
    {
      if (f2 == null) {
        return IGeometry.getIntersection2(s1, s2, f1);
      }
      var x1 = s1.x;
      var y1 = s1.y;
      var x2 = s2.x;
      var y2 = s2.y;
      var x3 = f1.x;
      var y3 = f1.y;
      var x4 = f2.x;
      var y4 = f2.y;
      var x, y; // intersection point
      var a1, a2, b1, b2, c1, c2; // coefficients of line eqns.
      var denom;
    
      a1 = y2 - y1;
      b1 = x1 - x2;
      c1 = x2 * y1 - x1 * y2;  // { a1*x + b1*y + c1 = 0 is line 1 }
    
      a2 = y4 - y3;
      b2 = x3 - x4;
      c2 = x4 * y3 - x3 * y4;  // { a2*x + b2*y + c2 = 0 is line 2 }
    
      denom = a1 * b2 - a2 * b1;
    
      if (denom == 0)
      {
        return null;
      }
    
      x = (b1 * c2 - b2 * c1) / denom;
      y = (a2 * c1 - a1 * c2) / denom;
    
      return new Point(x, y);
    }
    
    // -----------------------------------------------------------------------------
    // Section: Class Constants
    // -----------------------------------------------------------------------------
    /**
     * Some useful pre-calculated constants
     */
    IGeometry.HALF_PI = 0.5 * Math.PI;
    IGeometry.ONE_AND_HALF_PI = 1.5 * Math.PI;
    IGeometry.TWO_PI = 2.0 * Math.PI;
    IGeometry.THREE_PI = 3.0 * Math.PI;
    
    module.exports = IGeometry;
    
    },{}],16:[function(require,module,exports){
    function IMath() {
    }
    
    /**
     * This method returns the sign of the input value.
     */
    IMath.sign = function (value) {
      if (value > 0)
      {
        return 1;
      }
      else if (value < 0)
      {
        return -1;
      }
      else
      {
        return 0;
      }
    }
    
    IMath.floor = function (value) {
      return value < 0 ? Math.ceil(value) : Math.floor(value);
    }
    
    IMath.ceil = function (value) {
      return value < 0 ? Math.floor(value) : Math.ceil(value);
    }
    
    module.exports = IMath;
    
    },{}],17:[function(require,module,exports){
    function Integer() {
    }
    
    Integer.MAX_VALUE = 2147483647;
    Integer.MIN_VALUE = -2147483648;
    
    module.exports = Integer;
    
    },{}],18:[function(require,module,exports){
    var LGraphObject = require('./LGraphObject');
    var IGeometry = require('./IGeometry');
    var IMath = require('./IMath');
    
    function LEdge(source, target, vEdge) {
      LGraphObject.call(this, vEdge);
    
      this.isOverlapingSourceAndTarget = false;
      this.vGraphObject = vEdge;
      this.bendpoints = [];
      this.source = source;
      this.target = target;
    }
    
    LEdge.prototype = Object.create(LGraphObject.prototype);
    
    for (var prop in LGraphObject) {
      LEdge[prop] = LGraphObject[prop];
    }
    
    LEdge.prototype.getSource = function ()
    {
      return this.source;
    };
    
    LEdge.prototype.getTarget = function ()
    {
      return this.target;
    };
    
    LEdge.prototype.isInterGraph = function ()
    {
      return this.isInterGraph;
    };
    
    LEdge.prototype.getLength = function ()
    {
      return this.length;
    };
    
    LEdge.prototype.isOverlapingSourceAndTarget = function ()
    {
      return this.isOverlapingSourceAndTarget;
    };
    
    LEdge.prototype.getBendpoints = function ()
    {
      return this.bendpoints;
    };
    
    LEdge.prototype.getLca = function ()
    {
      return this.lca;
    };
    
    LEdge.prototype.getSourceInLca = function ()
    {
      return this.sourceInLca;
    };
    
    LEdge.prototype.getTargetInLca = function ()
    {
      return this.targetInLca;
    };
    
    LEdge.prototype.getOtherEnd = function (node)
    {
      if (this.source === node)
      {
        return this.target;
      }
      else if (this.target === node)
      {
        return this.source;
      }
      else
      {
        throw "Node is not incident with this edge";
      }
    }
    
    LEdge.prototype.getOtherEndInGraph = function (node, graph)
    {
      var otherEnd = this.getOtherEnd(node);
      var root = graph.getGraphManager().getRoot();
    
      while (true)
      {
        if (otherEnd.getOwner() == graph)
        {
          return otherEnd;
        }
    
        if (otherEnd.getOwner() == root)
        {
          break;
        }
    
        otherEnd = otherEnd.getOwner().getParent();
      }
    
      return null;
    };
    
    LEdge.prototype.updateLength = function ()
    {
      var clipPointCoordinates = new Array(4);
    
      this.isOverlapingSourceAndTarget =
              IGeometry.getIntersection(this.target.getRect(),
                      this.source.getRect(),
                      clipPointCoordinates);
    
      if (!this.isOverlapingSourceAndTarget)
      {
        this.lengthX = clipPointCoordinates[0] - clipPointCoordinates[2];
        this.lengthY = clipPointCoordinates[1] - clipPointCoordinates[3];
    
        if (Math.abs(this.lengthX) < 1.0)
        {
          this.lengthX = IMath.sign(this.lengthX);
        }
    
        if (Math.abs(this.lengthY) < 1.0)
        {
          this.lengthY = IMath.sign(this.lengthY);
        }
    
        this.length = Math.sqrt(
                this.lengthX * this.lengthX + this.lengthY * this.lengthY);
      }
    };
    
    LEdge.prototype.updateLengthSimple = function ()
    {
      this.lengthX = this.target.getCenterX() - this.source.getCenterX();
      this.lengthY = this.target.getCenterY() - this.source.getCenterY();
    
      if (Math.abs(this.lengthX) < 1.0)
      {
        this.lengthX = IMath.sign(this.lengthX);
      }
    
      if (Math.abs(this.lengthY) < 1.0)
      {
        this.lengthY = IMath.sign(this.lengthY);
      }
    
      this.length = Math.sqrt(
              this.lengthX * this.lengthX + this.lengthY * this.lengthY);
    }
    
    module.exports = LEdge;
    
    },{"./IGeometry":15,"./IMath":16,"./LGraphObject":21}],19:[function(require,module,exports){
    var LGraphObject = require('./LGraphObject');
    var Integer = require('./Integer');
    var LayoutConstants = require('./LayoutConstants');
    var LGraphManager = require('./LGraphManager');
    var LNode = require('./LNode');
    var HashSet = require('./HashSet');
    var RectangleD = require('./RectangleD');
    var Point = require('./Point');
    
    function LGraph(parent, obj2, vGraph) {
      LGraphObject.call(this, vGraph);
      this.estimatedSize = Integer.MIN_VALUE;
      this.margin = LayoutConstants.DEFAULT_GRAPH_MARGIN;
      this.edges = [];
      this.nodes = [];
      this.isConnected = false;
      this.parent = parent;
    
      if (obj2 != null && obj2 instanceof LGraphManager) {
        this.graphManager = obj2;
      }
      else if (obj2 != null && obj2 instanceof Layout) {
        this.graphManager = obj2.graphManager;
      }
    }
    
    LGraph.prototype = Object.create(LGraphObject.prototype);
    for (var prop in LGraphObject) {
      LGraph[prop] = LGraphObject[prop];
    }
    
    LGraph.prototype.getNodes = function () {
      return this.nodes;
    };
    
    LGraph.prototype.getEdges = function () {
      return this.edges;
    };
    
    LGraph.prototype.getGraphManager = function ()
    {
      return this.graphManager;
    };
    
    LGraph.prototype.getParent = function ()
    {
      return this.parent;
    };
    
    LGraph.prototype.getLeft = function ()
    {
      return this.left;
    };
    
    LGraph.prototype.getRight = function ()
    {
      return this.right;
    };
    
    LGraph.prototype.getTop = function ()
    {
      return this.top;
    };
    
    LGraph.prototype.getBottom = function ()
    {
      return this.bottom;
    };
    
    LGraph.prototype.isConnected = function ()
    {
      return this.isConnected;
    };
    
    LGraph.prototype.add = function (obj1, sourceNode, targetNode) {
      if (sourceNode == null && targetNode == null) {
        var newNode = obj1;
        if (this.graphManager == null) {
          throw "Graph has no graph mgr!";
        }
        if (this.getNodes().indexOf(newNode) > -1) {
          throw "Node already in graph!";
        }
        newNode.owner = this;
        this.getNodes().push(newNode);
    
        return newNode;
      }
      else {
        var newEdge = obj1;
        if (!(this.getNodes().indexOf(sourceNode) > -1 && (this.getNodes().indexOf(targetNode)) > -1)) {
          throw "Source or target not in graph!";
        }
    
        if (!(sourceNode.owner == targetNode.owner && sourceNode.owner == this)) {
          throw "Both owners must be this graph!";
        }
    
        if (sourceNode.owner != targetNode.owner)
        {
          return null;
        }
    
        // set source and target
        newEdge.source = sourceNode;
        newEdge.target = targetNode;
    
        // set as intra-graph edge
        newEdge.isInterGraph = false;
    
        // add to graph edge list
        this.getEdges().push(newEdge);
    
        // add to incidency lists
        sourceNode.edges.push(newEdge);
    
        if (targetNode != sourceNode)
        {
          targetNode.edges.push(newEdge);
        }
    
        return newEdge;
      }
    };
    
    LGraph.prototype.remove = function (obj) {
      var node = obj;
      if (obj instanceof LNode) {
        if (node == null) {
          throw "Node is null!";
        }
        if (!(node.owner != null && node.owner == this)) {
          throw "Owner graph is invalid!";
        }
        if (this.graphManager == null) {
          throw "Owner graph manager is invalid!";
        }
        // remove incident edges first (make a copy to do it safely)
        var edgesToBeRemoved = node.edges.slice();
        var edge;
        var s = edgesToBeRemoved.length;
        for (var i = 0; i < s; i++)
        {
          edge = edgesToBeRemoved[i];
    
          if (edge.isInterGraph)
          {
            this.graphManager.remove(edge);
          }
          else
          {
            edge.source.owner.remove(edge);
          }
        }
    
        // now the node itself
        var index = this.nodes.indexOf(node);
        if (index == -1) {
          throw "Node not in owner node list!";
        }
    
        this.nodes.splice(index, 1);
      }
      else if (obj instanceof LEdge) {
        var edge = obj;
        if (edge == null) {
          throw "Edge is null!";
        }
        if (!(edge.source != null && edge.target != null)) {
          throw "Source and/or target is null!";
        }
        if (!(edge.source.owner != null && edge.target.owner != null &&
                edge.source.owner == this && edge.target.owner == this)) {
          throw "Source and/or target owner is invalid!";
        }
    
        var sourceIndex = edge.source.edges.indexOf(edge);
        var targetIndex = edge.target.edges.indexOf(edge);
        if (!(sourceIndex > -1 && targetIndex > -1)) {
          throw "Source and/or target doesn't know this edge!";
        }
    
        edge.source.edges.splice(sourceIndex, 1);
    
        if (edge.target != edge.source)
        {
          edge.target.edges.splice(targetIndex, 1);
        }
    
        var index = edge.source.owner.getEdges().indexOf(edge);
        if (index == -1) {
          throw "Not in owner's edge list!";
        }
    
        edge.source.owner.getEdges().splice(index, 1);
      }
    };
    
    LGraph.prototype.updateLeftTop = function ()
    {
      var top = Integer.MAX_VALUE;
      var left = Integer.MAX_VALUE;
      var nodeTop;
      var nodeLeft;
    
      var nodes = this.getNodes();
      var s = nodes.length;
    
      for (var i = 0; i < s; i++)
      {
        var lNode = nodes[i];
        nodeTop = Math.floor(lNode.getTop());
        nodeLeft = Math.floor(lNode.getLeft());
    
        if (top > nodeTop)
        {
          top = nodeTop;
        }
    
        if (left > nodeLeft)
        {
          left = nodeLeft;
        }
      }
    
      // Do we have any nodes in this graph?
      if (top == Integer.MAX_VALUE)
      {
        return null;
      }
    
      this.left = left - this.margin;
      this.top = top - this.margin;
    
      // Apply the margins and return the result
      return new Point(this.left, this.top);
    };
    
    LGraph.prototype.updateBounds = function (recursive)
    {
      // calculate bounds
      var left = Integer.MAX_VALUE;
      var right = -Integer.MAX_VALUE;
      var top = Integer.MAX_VALUE;
      var bottom = -Integer.MAX_VALUE;
      var nodeLeft;
      var nodeRight;
      var nodeTop;
      var nodeBottom;
    
      var nodes = this.nodes;
      var s = nodes.length;
      for (var i = 0; i < s; i++)
      {
        var lNode = nodes[i];
    
        if (recursive && lNode.child != null)
        {
          lNode.updateBounds();
        }
        nodeLeft = Math.floor(lNode.getLeft());
        nodeRight = Math.floor(lNode.getRight());
        nodeTop = Math.floor(lNode.getTop());
        nodeBottom = Math.floor(lNode.getBottom());
    
        if (left > nodeLeft)
        {
          left = nodeLeft;
        }
    
        if (right < nodeRight)
        {
          right = nodeRight;
        }
    
        if (top > nodeTop)
        {
          top = nodeTop;
        }
    
        if (bottom < nodeBottom)
        {
          bottom = nodeBottom;
        }
      }
    
      var boundingRect = new RectangleD(left, top, right - left, bottom - top);
      if (left == Integer.MAX_VALUE)
      {
        this.left = Math.floor(this.parent.getLeft());
        this.right = Math.floor(this.parent.getRight());
        this.top = Math.floor(this.parent.getTop());
        this.bottom = Math.floor(this.parent.getBottom());
      }
    
      this.left = boundingRect.x - this.margin;
      this.right = boundingRect.x + boundingRect.width + this.margin;
      this.top = boundingRect.y - this.margin;
      this.bottom = boundingRect.y + boundingRect.height + this.margin;
    };
    
    LGraph.calculateBounds = function (nodes)
    {
      var left = Integer.MAX_VALUE;
      var right = -Integer.MAX_VALUE;
      var top = Integer.MAX_VALUE;
      var bottom = -Integer.MAX_VALUE;
      var nodeLeft;
      var nodeRight;
      var nodeTop;
      var nodeBottom;
    
      var s = nodes.length;
    
      for (var i = 0; i < s; i++)
      {
        var lNode = nodes[i];
        nodeLeft = Math.floor(lNode.getLeft());
        nodeRight = Math.floor(lNode.getRight());
        nodeTop = Math.floor(lNode.getTop());
        nodeBottom = Math.floor(lNode.getBottom());
    
        if (left > nodeLeft)
        {
          left = nodeLeft;
        }
    
        if (right < nodeRight)
        {
          right = nodeRight;
        }
    
        if (top > nodeTop)
        {
          top = nodeTop;
        }
    
        if (bottom < nodeBottom)
        {
          bottom = nodeBottom;
        }
      }
    
      var boundingRect = new RectangleD(left, top, right - left, bottom - top);
    
      return boundingRect;
    };
    
    LGraph.prototype.getInclusionTreeDepth = function ()
    {
      if (this == this.graphManager.getRoot())
      {
        return 1;
      }
      else
      {
        return this.parent.getInclusionTreeDepth();
      }
    };
    
    LGraph.prototype.getEstimatedSize = function ()
    {
      if (this.estimatedSize == Integer.MIN_VALUE) {
        throw "assert failed";
      }
      return this.estimatedSize;
    };
    
    LGraph.prototype.calcEstimatedSize = function ()
    {
      var size = 0;
      var nodes = this.nodes;
      var s = nodes.length;
    
      for (var i = 0; i < s; i++)
      {
        var lNode = nodes[i];
        size += lNode.calcEstimatedSize();
      }
    
      if (size == 0)
      {
        this.estimatedSize = LayoutConstants.EMPTY_COMPOUND_NODE_SIZE;
      }
      else
      {
        this.estimatedSize = Math.floor(size / Math.sqrt(this.nodes.length));
      }
    
      return Math.floor(this.estimatedSize);
    };
    
    LGraph.prototype.updateConnected = function ()
    {
      if (this.nodes.length == 0)
      {
        this.isConnected = true;
        return;
      }
    
      var toBeVisited = [];
      var visited = new HashSet();
      var currentNode = this.nodes[0];
      var neighborEdges;
      var currentNeighbor;
      toBeVisited = toBeVisited.concat(currentNode.withChildren());
    
      while (toBeVisited.length > 0)
      {
        currentNode = toBeVisited.shift();
        visited.add(currentNode);
    
        // Traverse all neighbors of this node
        neighborEdges = currentNode.getEdges();
        var s = neighborEdges.length;
        for (var i = 0; i < s; i++)
        {
          var neighborEdge = neighborEdges[i];
          currentNeighbor =
                  neighborEdge.getOtherEndInGraph(currentNode, this);
    
          // Add unvisited neighbors to the list to visit
          if (currentNeighbor != null &&
                  !visited.contains(currentNeighbor))
          {
            toBeVisited = toBeVisited.concat(currentNeighbor.withChildren());
          }
        }
      }
    
      this.isConnected = false;
    
      if (visited.size() >= this.nodes.length)
      {
        var noOfVisitedInThisGraph = 0;
    
        var s = visited.size();
        for (var visitedId in visited.set)
        {
          var visitedNode = visited.set[visitedId];
          if (visitedNode.owner == this)
          {
            noOfVisitedInThisGraph++;
          }
        }
    
        if (noOfVisitedInThisGraph == this.nodes.length)
        {
          this.isConnected = true;
        }
      }
    };
    
    module.exports = LGraph;
    
    },{"./HashSet":14,"./Integer":17,"./LGraphManager":20,"./LGraphObject":21,"./LNode":22,"./LayoutConstants":24,"./Point":25,"./RectangleD":28}],20:[function(require,module,exports){
    function LGraphManager(layout) {
      this.layout = layout;
    
      this.graphs = [];
      this.edges = [];
    }
    
    LGraphManager.prototype.addRoot = function ()
    {
      var ngraph = this.layout.newGraph();
      var nnode = this.layout.newNode(null);
      var root = this.add(ngraph, nnode);
      this.setRootGraph(root);
      return this.rootGraph;
    };
    
    LGraphManager.prototype.add = function (newGraph, parentNode, newEdge, sourceNode, targetNode)
    {
      //there are just 2 parameters are passed then it adds an LGraph else it adds an LEdge
      if (newEdge == null && sourceNode == null && targetNode == null) {
        if (newGraph == null) {
          throw "Graph is null!";
        }
        if (parentNode == null) {
          throw "Parent node is null!";
        }
        if (this.graphs.indexOf(newGraph) > -1) {
          throw "Graph already in this graph mgr!";
        }
    
        this.graphs.push(newGraph);
    
        if (newGraph.parent != null) {
          throw "Already has a parent!";
        }
        if (parentNode.child != null) {
          throw  "Already has a child!";
        }
    
        newGraph.parent = parentNode;
        parentNode.child = newGraph;
    
        return newGraph;
      }
      else {
        //change the order of the parameters
        targetNode = newEdge;
        sourceNode = parentNode;
        newEdge = newGraph;
        var sourceGraph = sourceNode.getOwner();
        var targetGraph = targetNode.getOwner();
    
        if (!(sourceGraph != null && sourceGraph.getGraphManager() == this)) {
          throw "Source not in this graph mgr!";
        }
        if (!(targetGraph != null && targetGraph.getGraphManager() == this)) {
          throw "Target not in this graph mgr!";
        }
    
        if (sourceGraph == targetGraph)
        {
          newEdge.isInterGraph = false;
          return sourceGraph.add(newEdge, sourceNode, targetNode);
        }
        else
        {
          newEdge.isInterGraph = true;
    
          // set source and target
          newEdge.source = sourceNode;
          newEdge.target = targetNode;
    
          // add edge to inter-graph edge list
          if (this.edges.indexOf(newEdge) > -1) {
            throw "Edge already in inter-graph edge list!";
          }
    
          this.edges.push(newEdge);
    
          // add edge to source and target incidency lists
          if (!(newEdge.source != null && newEdge.target != null)) {
            throw "Edge source and/or target is null!";
          }
    
          if (!(newEdge.source.edges.indexOf(newEdge) == -1 && newEdge.target.edges.indexOf(newEdge) == -1)) {
            throw "Edge already in source and/or target incidency list!";
          }
    
          newEdge.source.edges.push(newEdge);
          newEdge.target.edges.push(newEdge);
    
          return newEdge;
        }
      }
    };
    
    LGraphManager.prototype.remove = function (lObj) {
      if (lObj instanceof LGraph) {
        var graph = lObj;
        if (graph.getGraphManager() != this) {
          throw "Graph not in this graph mgr";
        }
        if (!(graph == this.rootGraph || (graph.parent != null && graph.parent.graphManager == this))) {
          throw "Invalid parent node!";
        }
    
        // first the edges (make a copy to do it safely)
        var edgesToBeRemoved = [];
    
        edgesToBeRemoved = edgesToBeRemoved.concat(graph.getEdges());
    
        var edge;
        var s = edgesToBeRemoved.length;
        for (var i = 0; i < s; i++)
        {
          edge = edgesToBeRemoved[i];
          graph.remove(edge);
        }
    
        // then the nodes (make a copy to do it safely)
        var nodesToBeRemoved = [];
    
        nodesToBeRemoved = nodesToBeRemoved.concat(graph.getNodes());
    
        var node;
        s = nodesToBeRemoved.length;
        for (var i = 0; i < s; i++)
        {
          node = nodesToBeRemoved[i];
          graph.remove(node);
        }
    
        // check if graph is the root
        if (graph == this.rootGraph)
        {
          this.setRootGraph(null);
        }
    
        // now remove the graph itself
        var index = this.graphs.indexOf(graph);
        this.graphs.splice(index, 1);
    
        // also reset the parent of the graph
        graph.parent = null;
      }
      else if (lObj instanceof LEdge) {
        edge = lObj;
        if (edge == null) {
          throw "Edge is null!";
        }
        if (!edge.isInterGraph) {
          throw "Not an inter-graph edge!";
        }
        if (!(edge.source != null && edge.target != null)) {
          throw "Source and/or target is null!";
        }
    
        // remove edge from source and target nodes' incidency lists
    
        if (!(edge.source.edges.indexOf(edge) != -1 && edge.target.edges.indexOf(edge) != -1)) {
          throw "Source and/or target doesn't know this edge!";
        }
    
        var index = edge.source.edges.indexOf(edge);
        edge.source.edges.splice(index, 1);
        index = edge.target.edges.indexOf(edge);
        edge.target.edges.splice(index, 1);
    
        // remove edge from owner graph manager's inter-graph edge list
    
        if (!(edge.source.owner != null && edge.source.owner.getGraphManager() != null)) {
          throw "Edge owner graph or owner graph manager is null!";
        }
        if (edge.source.owner.getGraphManager().edges.indexOf(edge) == -1) {
          throw "Not in owner graph manager's edge list!";
        }
    
        var index = edge.source.owner.getGraphManager().edges.indexOf(edge);
        edge.source.owner.getGraphManager().edges.splice(index, 1);
      }
    };
    
    LGraphManager.prototype.updateBounds = function ()
    {
      this.rootGraph.updateBounds(true);
    };
    
    LGraphManager.prototype.getGraphs = function ()
    {
      return this.graphs;
    };
    
    LGraphManager.prototype.getAllNodes = function ()
    {
      if (this.allNodes == null)
      {
        var nodeList = [];
        var graphs = this.getGraphs();
        var s = graphs.length;
        for (var i = 0; i < s; i++)
        {
          nodeList = nodeList.concat(graphs[i].getNodes());
        }
        this.allNodes = nodeList;
      }
      return this.allNodes;
    };
    
    LGraphManager.prototype.resetAllNodes = function ()
    {
      this.allNodes = null;
    };
    
    LGraphManager.prototype.resetAllEdges = function ()
    {
      this.allEdges = null;
    };
    
    LGraphManager.prototype.resetAllNodesToApplyGravitation = function ()
    {
      this.allNodesToApplyGravitation = null;
    };
    
    LGraphManager.prototype.getAllEdges = function ()
    {
      if (this.allEdges == null)
      {
        var edgeList = [];
        var graphs = this.getGraphs();
        var s = graphs.length;
        for (var i = 0; i < graphs.length; i++)
        {
          edgeList = edgeList.concat(graphs[i].getEdges());
        }
    
        edgeList = edgeList.concat(this.edges);
    
        this.allEdges = edgeList;
      }
      return this.allEdges;
    };
    
    LGraphManager.prototype.getAllNodesToApplyGravitation = function ()
    {
      return this.allNodesToApplyGravitation;
    };
    
    LGraphManager.prototype.setAllNodesToApplyGravitation = function (nodeList)
    {
      if (this.allNodesToApplyGravitation != null) {
        throw "assert failed";
      }
    
      this.allNodesToApplyGravitation = nodeList;
    };
    
    LGraphManager.prototype.getRoot = function ()
    {
      return this.rootGraph;
    };
    
    LGraphManager.prototype.setRootGraph = function (graph)
    {
      if (graph.getGraphManager() != this) {
        throw "Root not in this graph mgr!";
      }
    
      this.rootGraph = graph;
      // root graph must have a root node associated with it for convenience
      if (graph.parent == null)
      {
        graph.parent = this.layout.newNode("Root node");
      }
    };
    
    LGraphManager.prototype.getLayout = function ()
    {
      return this.layout;
    };
    
    LGraphManager.prototype.isOneAncestorOfOther = function (firstNode, secondNode)
    {
      if (!(firstNode != null && secondNode != null)) {
        throw "assert failed";
      }
    
      if (firstNode == secondNode)
      {
        return true;
      }
      // Is second node an ancestor of the first one?
      var ownerGraph = firstNode.getOwner();
      var parentNode;
    
      do
      {
        parentNode = ownerGraph.getParent();
    
        if (parentNode == null)
        {
          break;
        }
    
        if (parentNode == secondNode)
        {
          return true;
        }
    
        ownerGraph = parentNode.getOwner();
        if (ownerGraph == null)
        {
          break;
        }
      } while (true);
      // Is first node an ancestor of the second one?
      ownerGraph = secondNode.getOwner();
    
      do
      {
        parentNode = ownerGraph.getParent();
    
        if (parentNode == null)
        {
          break;
        }
    
        if (parentNode == firstNode)
        {
          return true;
        }
    
        ownerGraph = parentNode.getOwner();
        if (ownerGraph == null)
        {
          break;
        }
      } while (true);
    
      return false;
    };
    
    LGraphManager.prototype.calcLowestCommonAncestors = function ()
    {
      var edge;
      var sourceNode;
      var targetNode;
      var sourceAncestorGraph;
      var targetAncestorGraph;
    
      var edges = this.getAllEdges();
      var s = edges.length;
      for (var i = 0; i < s; i++)
      {
        edge = edges[i];
    
        sourceNode = edge.source;
        targetNode = edge.target;
        edge.lca = null;
        edge.sourceInLca = sourceNode;
        edge.targetInLca = targetNode;
    
        if (sourceNode == targetNode)
        {
          edge.lca = sourceNode.getOwner();
          continue;
        }
    
        sourceAncestorGraph = sourceNode.getOwner();
    
        while (edge.lca == null)
        {
          targetAncestorGraph = targetNode.getOwner();
    
          while (edge.lca == null)
          {
            if (targetAncestorGraph == sourceAncestorGraph)
            {
              edge.lca = targetAncestorGraph;
              break;
            }
    
            if (targetAncestorGraph == this.rootGraph)
            {
              break;
            }
    
            if (edge.lca != null) {
              throw "assert failed";
            }
            edge.targetInLca = targetAncestorGraph.getParent();
            targetAncestorGraph = edge.targetInLca.getOwner();
          }
    
          if (sourceAncestorGraph == this.rootGraph)
          {
            break;
          }
    
          if (edge.lca == null)
          {
            edge.sourceInLca = sourceAncestorGraph.getParent();
            sourceAncestorGraph = edge.sourceInLca.getOwner();
          }
        }
    
        if (edge.lca == null) {
          throw "assert failed";
        }
      }
    };
    
    LGraphManager.prototype.calcLowestCommonAncestor = function (firstNode, secondNode)
    {
      if (firstNode == secondNode)
      {
        return firstNode.getOwner();
      }
      var firstOwnerGraph = firstNode.getOwner();
    
      do
      {
        if (firstOwnerGraph == null)
        {
          break;
        }
        var secondOwnerGraph = secondNode.getOwner();
    
        do
        {
          if (secondOwnerGraph == null)
          {
            break;
          }
    
          if (secondOwnerGraph == firstOwnerGraph)
          {
            return secondOwnerGraph;
          }
          secondOwnerGraph = secondOwnerGraph.getParent().getOwner();
        } while (true);
    
        firstOwnerGraph = firstOwnerGraph.getParent().getOwner();
      } while (true);
    
      return firstOwnerGraph;
    };
    
    LGraphManager.prototype.calcInclusionTreeDepths = function (graph, depth) {
      if (graph == null && depth == null) {
        graph = this.rootGraph;
        depth = 1;
      }
      var node;
    
      var nodes = graph.getNodes();
      var s = nodes.length;
      for (var i = 0; i < s; i++)
      {
        node = nodes[i];
        node.inclusionTreeDepth = depth;
    
        if (node.child != null)
        {
          this.calcInclusionTreeDepths(node.child, depth + 1);
        }
      }
    };
    
    LGraphManager.prototype.includesInvalidEdge = function ()
    {
      var edge;
    
      var s = this.edges.length;
      for (var i = 0; i < s; i++)
      {
        edge = this.edges[i];
    
        if (this.isOneAncestorOfOther(edge.source, edge.target))
        {
          return true;
        }
      }
      return false;
    };
    
    module.exports = LGraphManager;
    
    },{}],21:[function(require,module,exports){
    function LGraphObject(vGraphObject) {
      this.vGraphObject = vGraphObject;
    }
    
    module.exports = LGraphObject;
    
    },{}],22:[function(require,module,exports){
    var LGraphObject = require('./LGraphObject');
    var Integer = require('./Integer');
    var RectangleD = require('./RectangleD');
    var LayoutConstants = require('./LayoutConstants');
    var RandomSeed = require('./RandomSeed');
    var PointD = require('./PointD');
    var HashSet = require('./HashSet');
    
    function LNode(gm, loc, size, vNode) {
      //Alternative constructor 1 : LNode(LGraphManager gm, Point loc, Dimension size, Object vNode)
      if (size == null && vNode == null) {
        vNode = loc;
      }
    
      LGraphObject.call(this, vNode);
    
      //Alternative constructor 2 : LNode(Layout layout, Object vNode)
      if (gm.graphManager != null)
        gm = gm.graphManager;
    
      this.estimatedSize = Integer.MIN_VALUE;
      this.inclusionTreeDepth = Integer.MAX_VALUE;
      this.vGraphObject = vNode;
      this.edges = [];
      this.graphManager = gm;
    
      if (size != null && loc != null)
        this.rect = new RectangleD(loc.x, loc.y, size.width, size.height);
      else
        this.rect = new RectangleD();
    }
    
    LNode.prototype = Object.create(LGraphObject.prototype);
    for (var prop in LGraphObject) {
      LNode[prop] = LGraphObject[prop];
    }
    
    LNode.prototype.getEdges = function ()
    {
      return this.edges;
    };
    
    LNode.prototype.getChild = function ()
    {
      return this.child;
    };
    
    LNode.prototype.getOwner = function ()
    {
      if (this.owner != null) {
        if (!(this.owner == null || this.owner.getNodes().indexOf(this) > -1)) {
          throw "assert failed";
        }
      }
    
      return this.owner;
    };
    
    LNode.prototype.getWidth = function ()
    {
      return this.rect.width;
    };
    
    LNode.prototype.setWidth = function (width)
    {
      this.rect.width = width;
    };
    
    LNode.prototype.getHeight = function ()
    {
      return this.rect.height;
    };
    
    LNode.prototype.setHeight = function (height)
    {
      this.rect.height = height;
    };
    
    LNode.prototype.getCenterX = function ()
    {
      return this.rect.x + this.rect.width / 2;
    };
    
    LNode.prototype.getCenterY = function ()
    {
      return this.rect.y + this.rect.height / 2;
    };
    
    LNode.prototype.getCenter = function ()
    {
      return new PointD(this.rect.x + this.rect.width / 2,
              this.rect.y + this.rect.height / 2);
    };
    
    LNode.prototype.getLocation = function ()
    {
      return new PointD(this.rect.x, this.rect.y);
    };
    
    LNode.prototype.getRect = function ()
    {
      return this.rect;
    };
    
    LNode.prototype.getDiagonal = function ()
    {
      return Math.sqrt(this.rect.width * this.rect.width +
              this.rect.height * this.rect.height);
    };
    
    LNode.prototype.setRect = function (upperLeft, dimension)
    {
      this.rect.x = upperLeft.x;
      this.rect.y = upperLeft.y;
      this.rect.width = dimension.width;
      this.rect.height = dimension.height;
    };
    
    LNode.prototype.setCenter = function (cx, cy)
    {
      this.rect.x = cx - this.rect.width / 2;
      this.rect.y = cy - this.rect.height / 2;
    };
    
    LNode.prototype.setLocation = function (x, y)
    {
      this.rect.x = x;
      this.rect.y = y;
    };
    
    LNode.prototype.moveBy = function (dx, dy)
    {
      this.rect.x += dx;
      this.rect.y += dy;
    };
    
    LNode.prototype.getEdgeListToNode = function (to)
    {
      var edgeList = [];
      var edge;
    
      for (var obj in this.edges)
      {
        edge = obj;
    
        if (edge.target == to)
        {
          if (edge.source != this)
            throw "Incorrect edge source!";
    
          edgeList.push(edge);
        }
      }
    
      return edgeList;
    };
    
    LNode.prototype.getEdgesBetween = function (other)
    {
      var edgeList = [];
      var edge;
    
      for (var obj in this.edges)
      {
        edge = this.edges[obj];
    
        if (!(edge.source == this || edge.target == this))
          throw "Incorrect edge source and/or target";
    
        if ((edge.target == other) || (edge.source == other))
        {
          edgeList.push(edge);
        }
      }
    
      return edgeList;
    };
    
    LNode.prototype.getNeighborsList = function ()
    {
      var neighbors = new HashSet();
      var edge;
    
      for (var obj in this.edges)
      {
        edge = this.edges[obj];
    
        if (edge.source == this)
        {
          neighbors.add(edge.target);
        }
        else
        {
          if (!edge.target == this)
            throw "Incorrect incidency!";
          neighbors.add(edge.source);
        }
      }
    
      return neighbors;
    };
    
    LNode.prototype.withChildren = function ()
    {
      var withNeighborsList = [];
      var childNode;
    
      withNeighborsList.push(this);
    
      if (this.child != null)
      {
        var nodes = this.child.getNodes();
        for (var i = 0; i < nodes.length; i++)
        {
          childNode = nodes[i];
    
          withNeighborsList = withNeighborsList.concat(childNode.withChildren());
        }
      }
    
      return withNeighborsList;
    };
    
    LNode.prototype.getEstimatedSize = function () {
      if (this.estimatedSize == Integer.MIN_VALUE) {
        throw "assert failed";
      }
      return this.estimatedSize;
    };
    
    LNode.prototype.calcEstimatedSize = function () {
      if (this.child == null)
      {
        return this.estimatedSize = Math.floor((this.rect.width + this.rect.height) / 2);
      }
      else
      {
        this.estimatedSize = this.child.calcEstimatedSize();
        this.rect.width = this.estimatedSize;
        this.rect.height = this.estimatedSize;
    
        return this.estimatedSize;
      }
    };
    
    LNode.prototype.scatter = function () {
      var randomCenterX;
      var randomCenterY;
    
      var minX = -LayoutConstants.INITIAL_WORLD_BOUNDARY;
      var maxX = LayoutConstants.INITIAL_WORLD_BOUNDARY;
      randomCenterX = LayoutConstants.WORLD_CENTER_X +
              (RandomSeed.nextDouble() * (maxX - minX)) + minX;
    
      var minY = -LayoutConstants.INITIAL_WORLD_BOUNDARY;
      var maxY = LayoutConstants.INITIAL_WORLD_BOUNDARY;
      randomCenterY = LayoutConstants.WORLD_CENTER_Y +
              (RandomSeed.nextDouble() * (maxY - minY)) + minY;
    
      this.rect.x = randomCenterX;
      this.rect.y = randomCenterY
    };
    
    LNode.prototype.updateBounds = function () {
      if (this.getChild() == null) {
        throw "assert failed";
      }
      if (this.getChild().getNodes().length != 0)
      {
        // wrap the children nodes by re-arranging the boundaries
        var childGraph = this.getChild();
        childGraph.updateBounds(true);
    
        this.rect.x = childGraph.getLeft();
        this.rect.y = childGraph.getTop();
    
        this.setWidth(childGraph.getRight() - childGraph.getLeft());
        this.setHeight(childGraph.getBottom() - childGraph.getTop());
      }
    };
    
    LNode.prototype.getInclusionTreeDepth = function ()
    {
      if (this.inclusionTreeDepth == Integer.MAX_VALUE) {
        throw "assert failed";
      }
      return this.inclusionTreeDepth;
    };
    
    LNode.prototype.transform = function (trans)
    {
      var left = this.rect.x;
    
      if (left > LayoutConstants.WORLD_BOUNDARY)
      {
        left = LayoutConstants.WORLD_BOUNDARY;
      }
      else if (left < -LayoutConstants.WORLD_BOUNDARY)
      {
        left = -LayoutConstants.WORLD_BOUNDARY;
      }
    
      var top = this.rect.y;
    
      if (top > LayoutConstants.WORLD_BOUNDARY)
      {
        top = LayoutConstants.WORLD_BOUNDARY;
      }
      else if (top < -LayoutConstants.WORLD_BOUNDARY)
      {
        top = -LayoutConstants.WORLD_BOUNDARY;
      }
    
      var leftTop = new PointD(left, top);
      var vLeftTop = trans.inverseTransformPoint(leftTop);
    
      this.setLocation(vLeftTop.x, vLeftTop.y);
    };
    
    LNode.prototype.getLeft = function ()
    {
      return this.rect.x;
    };
    
    LNode.prototype.getRight = function ()
    {
      return this.rect.x + this.rect.width;
    };
    
    LNode.prototype.getTop = function ()
    {
      return this.rect.y;
    };
    
    LNode.prototype.getBottom = function ()
    {
      return this.rect.y + this.rect.height;
    };
    
    LNode.prototype.getParent = function ()
    {
      if (this.owner == null)
      {
        return null;
      }
    
      return this.owner.getParent();
    };
    
    module.exports = LNode;
    
    },{"./HashSet":14,"./Integer":17,"./LGraphObject":21,"./LayoutConstants":24,"./PointD":26,"./RandomSeed":27,"./RectangleD":28}],23:[function(require,module,exports){
    var LayoutConstants = require('./LayoutConstants');
    var HashMap = require('./HashMap');
    var LGraphManager = require('./LGraphManager');
    var LNode = require('./LNode');
    var LEdge = require('./LEdge');
    var LGraph = require('./LGraph');
    var PointD = require('./PointD');
    var Transform = require('./Transform');
    var Emitter = require('./Emitter');
    var HashSet = require('./HashSet');
    
    function Layout(isRemoteUse) {
      Emitter.call( this );
    
      //Layout Quality: 0:proof, 1:default, 2:draft
      this.layoutQuality = LayoutConstants.DEFAULT_QUALITY;
      //Whether layout should create bendpoints as needed or not
      this.createBendsAsNeeded =
              LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED;
      //Whether layout should be incremental or not
      this.incremental = LayoutConstants.DEFAULT_INCREMENTAL;
      //Whether we animate from before to after layout node positions
      this.animationOnLayout =
              LayoutConstants.DEFAULT_ANIMATION_ON_LAYOUT;
      //Whether we animate the layout process or not
      this.animationDuringLayout = LayoutConstants.DEFAULT_ANIMATION_DURING_LAYOUT;
      //Number iterations that should be done between two successive animations
      this.animationPeriod = LayoutConstants.DEFAULT_ANIMATION_PERIOD;
      /**
       * Whether or not leaf nodes (non-compound nodes) are of uniform sizes. When
       * they are, both spring and repulsion forces between two leaf nodes can be
       * calculated without the expensive clipping point calculations, resulting
       * in major speed-up.
       */
      this.uniformLeafNodeSizes =
              LayoutConstants.DEFAULT_UNIFORM_LEAF_NODE_SIZES;
      /**
       * This is used for creation of bendpoints by using dummy nodes and edges.
       * Maps an LEdge to its dummy bendpoint path.
       */
      this.edgeToDummyNodes = new HashMap();
      this.graphManager = new LGraphManager(this);
      this.isLayoutFinished = false;
      this.isSubLayout = false;
      this.isRemoteUse = false;
    
      if (isRemoteUse != null) {
        this.isRemoteUse = isRemoteUse;
      }
    }
    
    Layout.RANDOM_SEED = 1;
    
    Layout.prototype = Object.create( Emitter.prototype );
    
    Layout.prototype.getGraphManager = function () {
      return this.graphManager;
    };
    
    Layout.prototype.getAllNodes = function () {
      return this.graphManager.getAllNodes();
    };
    
    Layout.prototype.getAllEdges = function () {
      return this.graphManager.getAllEdges();
    };
    
    Layout.prototype.getAllNodesToApplyGravitation = function () {
      return this.graphManager.getAllNodesToApplyGravitation();
    };
    
    Layout.prototype.newGraphManager = function () {
      var gm = new LGraphManager(this);
      this.graphManager = gm;
      return gm;
    };
    
    Layout.prototype.newGraph = function (vGraph)
    {
      return new LGraph(null, this.graphManager, vGraph);
    };
    
    Layout.prototype.newNode = function (vNode)
    {
      return new LNode(this.graphManager, vNode);
    };
    
    Layout.prototype.newEdge = function (vEdge)
    {
      return new LEdge(null, null, vEdge);
    };
    
    Layout.prototype.runLayout = function ()
    {
      this.isLayoutFinished = false;
    
      this.initParameters();
      var isLayoutSuccessfull;
    
      if ((this.graphManager.getRoot() == null)
              || this.graphManager.getRoot().getNodes().length == 0
              || this.graphManager.includesInvalidEdge())
      {
        isLayoutSuccessfull = false;
      }
      else
      {
        // calculate execution time
        var startTime = 0;
    
        if (!this.isSubLayout)
        {
          startTime = new Date().getTime()
        }
    
        isLayoutSuccessfull = this.layout();
    
        if (!this.isSubLayout)
        {
          var endTime = new Date().getTime();
          var excTime = endTime - startTime;
        }
      }
    
      if (isLayoutSuccessfull)
      {
        if (!this.isSubLayout)
        {
          this.doPostLayout();
        }
      }
    
      this.isLayoutFinished = true;
    
      return isLayoutSuccessfull;
    };
    
    /**
     * This method performs the operations required after layout.
     */
    Layout.prototype.doPostLayout = function ()
    {
      //assert !isSubLayout : "Should not be called on sub-layout!";
      // Propagate geometric changes to v-level objects
      this.transform();
      this.update();
    };
    
    /**
     * This method updates the geometry of the target graph according to
     * calculated layout.
     */
    Layout.prototype.update2 = function () {
      // update bend points
      if (this.createBendsAsNeeded)
      {
        this.createBendpointsFromDummyNodes();
    
        // reset all edges, since the topology has changed
        this.graphManager.resetAllEdges();
      }
    
      // perform edge, node and root updates if layout is not called
      // remotely
      if (!this.isRemoteUse)
      {
        // update all edges
        var edge;
        var allEdges = this.graphManager.getAllEdges();
        for (var i = 0; i < allEdges.length; i++)
        {
          edge = allEdges[i];
    //      this.update(edge);
        }
    
        // recursively update nodes
        var node;
        var nodes = this.graphManager.getRoot().getNodes();
        for (var i = 0; i < nodes.length; i++)
        {
          node = nodes[i];
    //      this.update(node);
        }
    
        // update root graph
        this.update(this.graphManager.getRoot());
      }
    };
    
    Layout.prototype.update = function (obj) {
      if (obj == null) {
        this.update2();
      }
      else if (obj instanceof LNode) {
        var node = obj;
        if (node.getChild() != null)
        {
          // since node is compound, recursively update child nodes
          var nodes = node.getChild().getNodes();
          for (var i = 0; i < nodes.length; i++)
          {
            update(nodes[i]);
          }
        }
    
        // if the l-level node is associated with a v-level graph object,
        // then it is assumed that the v-level node implements the
        // interface Updatable.
        if (node.vGraphObject != null)
        {
          // cast to Updatable without any type check
          var vNode = node.vGraphObject;
    
          // call the update method of the interface
          vNode.update(node);
        }
      }
      else if (obj instanceof LEdge) {
        var edge = obj;
        // if the l-level edge is associated with a v-level graph object,
        // then it is assumed that the v-level edge implements the
        // interface Updatable.
    
        if (edge.vGraphObject != null)
        {
          // cast to Updatable without any type check
          var vEdge = edge.vGraphObject;
    
          // call the update method of the interface
          vEdge.update(edge);
        }
      }
      else if (obj instanceof LGraph) {
        var graph = obj;
        // if the l-level graph is associated with a v-level graph object,
        // then it is assumed that the v-level object implements the
        // interface Updatable.
    
        if (graph.vGraphObject != null)
        {
          // cast to Updatable without any type check
          var vGraph = graph.vGraphObject;
    
          // call the update method of the interface
          vGraph.update(graph);
        }
      }
    };
    
    /**
     * This method is used to set all layout parameters to default values
     * determined at compile time.
     */
    Layout.prototype.initParameters = function () {
      if (!this.isSubLayout)
      {
        this.layoutQuality = LayoutConstants.DEFAULT_QUALITY;
        this.animationDuringLayout = LayoutConstants.DEFAULT_ANIMATION_ON_LAYOUT;
        this.animationPeriod = LayoutConstants.DEFAULT_ANIMATION_PERIOD;
        this.animationOnLayout = LayoutConstants.DEFAULT_ANIMATION_DURING_LAYOUT;
        this.incremental = LayoutConstants.DEFAULT_INCREMENTAL;
        this.createBendsAsNeeded = LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED;
        this.uniformLeafNodeSizes = LayoutConstants.DEFAULT_UNIFORM_LEAF_NODE_SIZES;
      }
    
      if (this.animationDuringLayout)
      {
        animationOnLayout = false;
      }
    };
    
    Layout.prototype.transform = function (newLeftTop) {
      if (newLeftTop == undefined) {
        this.transform(new PointD(0, 0));
      }
      else {
        // create a transformation object (from Eclipse to layout). When an
        // inverse transform is applied, we get upper-left coordinate of the
        // drawing or the root graph at given input coordinate (some margins
        // already included in calculation of left-top).
    
        var trans = new Transform();
        var leftTop = this.graphManager.getRoot().updateLeftTop();
    
        if (leftTop != null)
        {
          trans.setWorldOrgX(newLeftTop.x);
          trans.setWorldOrgY(newLeftTop.y);
    
          trans.setDeviceOrgX(leftTop.x);
          trans.setDeviceOrgY(leftTop.y);
    
          var nodes = this.getAllNodes();
          var node;
    
          for (var i = 0; i < nodes.length; i++)
          {
            node = nodes[i];
            node.transform(trans);
          }
        }
      }
    };
    
    Layout.prototype.positionNodesRandomly = function (graph) {
    
      if (graph == undefined) {
        //assert !this.incremental;
        this.positionNodesRandomly(this.getGraphManager().getRoot());
        this.getGraphManager().getRoot().updateBounds(true);
      }
      else {
        var lNode;
        var childGraph;
    
        var nodes = graph.getNodes();
        for (var i = 0; i < nodes.length; i++)
        {
          lNode = nodes[i];
          childGraph = lNode.getChild();
    
          if (childGraph == null)
          {
            lNode.scatter();
          }
          else if (childGraph.getNodes().length == 0)
          {
            lNode.scatter();
          }
          else
          {
            this.positionNodesRandomly(childGraph);
            lNode.updateBounds();
          }
        }
      }
    };
    
    /**
     * This method returns a list of trees where each tree is represented as a
     * list of l-nodes. The method returns a list of size 0 when:
     * - The graph is not flat or
     * - One of the component(s) of the graph is not a tree.
     */
    Layout.prototype.getFlatForest = function ()
    {
      var flatForest = [];
      var isForest = true;
    
      // Quick reference for all nodes in the graph manager associated with
      // this layout. The list should not be changed.
      var allNodes = this.graphManager.getRoot().getNodes();
    
      // First be sure that the graph is flat
      var isFlat = true;
    
      for (var i = 0; i < allNodes.length; i++)
      {
        if (allNodes[i].getChild() != null)
        {
          isFlat = false;
        }
      }
    
      // Return empty forest if the graph is not flat.
      if (!isFlat)
      {
        return flatForest;
      }
    
      // Run BFS for each component of the graph.
    
      var visited = new HashSet();
      var toBeVisited = [];
      var parents = new HashMap();
      var unProcessedNodes = [];
    
      unProcessedNodes = unProcessedNodes.concat(allNodes);
    
      // Each iteration of this loop finds a component of the graph and
      // decides whether it is a tree or not. If it is a tree, adds it to the
      // forest and continued with the next component.
    
      while (unProcessedNodes.length > 0 && isForest)
      {
        toBeVisited.push(unProcessedNodes[0]);
    
        // Start the BFS. Each iteration of this loop visits a node in a
        // BFS manner.
        while (toBeVisited.length > 0 && isForest)
        {
          //pool operation
          var currentNode = toBeVisited[0];
          toBeVisited.splice(0, 1);
          visited.add(currentNode);
    
          // Traverse all neighbors of this node
          var neighborEdges = currentNode.getEdges();
    
          for (var i = 0; i < neighborEdges.length; i++)
          {
            var currentNeighbor =
                    neighborEdges[i].getOtherEnd(currentNode);
    
            // If BFS is not growing from this neighbor.
            if (parents.get(currentNode) != currentNeighbor)
            {
              // We haven't previously visited this neighbor.
              if (!visited.contains(currentNeighbor))
              {
                toBeVisited.push(currentNeighbor);
                parents.put(currentNeighbor, currentNode);
              }
              // Since we have previously visited this neighbor and
              // this neighbor is not parent of currentNode, given
              // graph contains a component that is not tree, hence
              // it is not a forest.
              else
              {
                isForest = false;
                break;
              }
            }
          }
        }
    
        // The graph contains a component that is not a tree. Empty
        // previously found trees. The method will end.
        if (!isForest)
        {
          flatForest = [];
        }
        // Save currently visited nodes as a tree in our forest. Reset
        // visited and parents lists. Continue with the next component of
        // the graph, if any.
        else
        {
          var temp = [];
          visited.addAllTo(temp);
          flatForest.push(temp);
          //flatForest = flatForest.concat(temp);
          //unProcessedNodes.removeAll(visited);
          for (var i = 0; i < temp.length; i++) {
            var value = temp[i];
            var index = unProcessedNodes.indexOf(value);
            if (index > -1) {
              unProcessedNodes.splice(index, 1);
            }
          }
          visited = new HashSet();
          parents = new HashMap();
        }
      }
    
      return flatForest;
    };
    
    /**
     * This method creates dummy nodes (an l-level node with minimal dimensions)
     * for the given edge (one per bendpoint). The existing l-level structure
     * is updated accordingly.
     */
    Layout.prototype.createDummyNodesForBendpoints = function (edge)
    {
      var dummyNodes = [];
      var prev = edge.source;
    
      var graph = this.graphManager.calcLowestCommonAncestor(edge.source, edge.target);
    
      for (var i = 0; i < edge.bendpoints.length; i++)
      {
        // create new dummy node
        var dummyNode = this.newNode(null);
        dummyNode.setRect(new Point(0, 0), new Dimension(1, 1));
    
        graph.add(dummyNode);
    
        // create new dummy edge between prev and dummy node
        var dummyEdge = this.newEdge(null);
        this.graphManager.add(dummyEdge, prev, dummyNode);
    
        dummyNodes.add(dummyNode);
        prev = dummyNode;
      }
    
      var dummyEdge = this.newEdge(null);
      this.graphManager.add(dummyEdge, prev, edge.target);
    
      this.edgeToDummyNodes.put(edge, dummyNodes);
    
      // remove real edge from graph manager if it is inter-graph
      if (edge.isInterGraph())
      {
        this.graphManager.remove(edge);
      }
      // else, remove the edge from the current graph
      else
      {
        graph.remove(edge);
      }
    
      return dummyNodes;
    };
    
    /**
     * This method creates bendpoints for edges from the dummy nodes
     * at l-level.
     */
    Layout.prototype.createBendpointsFromDummyNodes = function ()
    {
      var edges = [];
      edges = edges.concat(this.graphManager.getAllEdges());
      edges = this.edgeToDummyNodes.keySet().concat(edges);
    
      for (var k = 0; k < edges.length; k++)
      {
        var lEdge = edges[k];
    
        if (lEdge.bendpoints.length > 0)
        {
          var path = this.edgeToDummyNodes.get(lEdge);
    
          for (var i = 0; i < path.length; i++)
          {
            var dummyNode = path[i];
            var p = new PointD(dummyNode.getCenterX(),
                    dummyNode.getCenterY());
    
            // update bendpoint's location according to dummy node
            var ebp = lEdge.bendpoints.get(i);
            ebp.x = p.x;
            ebp.y = p.y;
    
            // remove the dummy node, dummy edges incident with this
            // dummy node is also removed (within the remove method)
            dummyNode.getOwner().remove(dummyNode);
          }
    
          // add the real edge to graph
          this.graphManager.add(lEdge, lEdge.source, lEdge.target);
        }
      }
    };
    
    Layout.transform = function (sliderValue, defaultValue, minDiv, maxMul) {
      if (minDiv != undefined && maxMul != undefined) {
        var value = defaultValue;
    
        if (sliderValue <= 50)
        {
          var minValue = defaultValue / minDiv;
          value -= ((defaultValue - minValue) / 50) * (50 - sliderValue);
        }
        else
        {
          var maxValue = defaultValue * maxMul;
          value += ((maxValue - defaultValue) / 50) * (sliderValue - 50);
        }
    
        return value;
      }
      else {
        var a, b;
    
        if (sliderValue <= 50)
        {
          a = 9.0 * defaultValue / 500.0;
          b = defaultValue / 10.0;
        }
        else
        {
          a = 9.0 * defaultValue / 50.0;
          b = -8 * defaultValue;
        }
    
        return (a * sliderValue + b);
      }
    };
    
    /**
     * This method finds and returns the center of the given nodes, assuming
     * that the given nodes form a tree in themselves.
     */
    Layout.findCenterOfTree = function (nodes)
    {
      var list = [];
      list = list.concat(nodes);
    
      var removedNodes = [];
      var remainingDegrees = new HashMap();
      var foundCenter = false;
      var centerNode = null;
    
      if (list.length == 1 || list.length == 2)
      {
        foundCenter = true;
        centerNode = list[0];
      }
    
      for (var i = 0; i < list.length; i++)
      {
        var node = list[i];
        var degree = node.getNeighborsList().size();
        remainingDegrees.put(node, node.getNeighborsList().size());
    
        if (degree == 1)
        {
          removedNodes.push(node);
        }
      }
    
      var tempList = [];
      tempList = tempList.concat(removedNodes);
    
      while (!foundCenter)
      {
        var tempList2 = [];
        tempList2 = tempList2.concat(tempList);
        tempList = [];
    
        for (var i = 0; i < list.length; i++)
        {
          var node = list[i];
    
          var index = list.indexOf(node);
          if (index >= 0) {
            list.splice(index, 1);
          }
    
          var neighbours = node.getNeighborsList();
    
          for (var j in neighbours.set)
          {
            var neighbour = neighbours.set[j];
            if (removedNodes.indexOf(neighbour) < 0)
            {
              var otherDegree = remainingDegrees.get(neighbour);
              var newDegree = otherDegree - 1;
    
              if (newDegree == 1)
              {
                tempList.push(neighbour);
              }
    
              remainingDegrees.put(neighbour, newDegree);
            }
          }
        }
    
        removedNodes = removedNodes.concat(tempList);
    
        if (list.length == 1 || list.length == 2)
        {
          foundCenter = true;
          centerNode = list[0];
        }
      }
    
      return centerNode;
    };
    
    /**
     * During the coarsening process, this layout may be referenced by two graph managers
     * this setter function grants access to change the currently being used graph manager
     */
    Layout.prototype.setGraphManager = function (gm)
    {
      this.graphManager = gm;
    };
    
    module.exports = Layout;
    
    },{"./Emitter":8,"./HashMap":13,"./HashSet":14,"./LEdge":18,"./LGraph":19,"./LGraphManager":20,"./LNode":22,"./LayoutConstants":24,"./PointD":26,"./Transform":30}],24:[function(require,module,exports){
    function LayoutConstants() {
    }
    
    /**
     * Layout Quality
     */
    LayoutConstants.PROOF_QUALITY = 0;
    LayoutConstants.DEFAULT_QUALITY = 1;
    LayoutConstants.DRAFT_QUALITY = 2;
    
    /**
     * Default parameters
     */
    LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED = false;
    //LayoutConstants.DEFAULT_INCREMENTAL = true;
    LayoutConstants.DEFAULT_INCREMENTAL = false;
    LayoutConstants.DEFAULT_ANIMATION_ON_LAYOUT = true;
    LayoutConstants.DEFAULT_ANIMATION_DURING_LAYOUT = false;
    LayoutConstants.DEFAULT_ANIMATION_PERIOD = 50;
    LayoutConstants.DEFAULT_UNIFORM_LEAF_NODE_SIZES = false;
    
    // -----------------------------------------------------------------------------
    // Section: General other constants
    // -----------------------------------------------------------------------------
    /*
     * Margins of a graph to be applied on bouding rectangle of its contents. We
     * assume margins on all four sides to be uniform.
     */
    LayoutConstants.DEFAULT_GRAPH_MARGIN = 15;
    
    /*
     * Default dimension of a non-compound node.
     */
    LayoutConstants.SIMPLE_NODE_SIZE = 40;
    
    /*
     * Default dimension of a non-compound node.
     */
    LayoutConstants.SIMPLE_NODE_HALF_SIZE = LayoutConstants.SIMPLE_NODE_SIZE / 2;
    
    /*
     * Empty compound node size. When a compound node is empty, its both
     * dimensions should be of this value.
     */
    LayoutConstants.EMPTY_COMPOUND_NODE_SIZE = 40;
    
    /*
     * Minimum length that an edge should take during layout
     */
    LayoutConstants.MIN_EDGE_LENGTH = 1;
    
    /*
     * World boundaries that layout operates on
     */
    LayoutConstants.WORLD_BOUNDARY = 1000000;
    
    /*
     * World boundaries that random positioning can be performed with
     */
    LayoutConstants.INITIAL_WORLD_BOUNDARY = LayoutConstants.WORLD_BOUNDARY / 1000;
    
    /*
     * Coordinates of the world center
     */
    LayoutConstants.WORLD_CENTER_X = 1200;
    LayoutConstants.WORLD_CENTER_Y = 900;
    
    module.exports = LayoutConstants;
    
    },{}],25:[function(require,module,exports){
    /*
     *This class is the javascript implementation of the Point.java class in jdk
     */
    function Point(x, y, p) {
      this.x = null;
      this.y = null;
      if (x == null && y == null && p == null) {
        this.x = 0;
        this.y = 0;
      }
      else if (typeof x == 'number' && typeof y == 'number' && p == null) {
        this.x = x;
        this.y = y;
      }
      else if (x.constructor.name == 'Point' && y == null && p == null) {
        p = x;
        this.x = p.x;
        this.y = p.y;
      }
    }
    
    Point.prototype.getX = function () {
      return this.x;
    }
    
    Point.prototype.getY = function () {
      return this.y;
    }
    
    Point.prototype.getLocation = function () {
      return new Point(this.x, this.y);
    }
    
    Point.prototype.setLocation = function (x, y, p) {
      if (x.constructor.name == 'Point' && y == null && p == null) {
        p = x;
        this.setLocation(p.x, p.y);
      }
      else if (typeof x == 'number' && typeof y == 'number' && p == null) {
        //if both parameters are integer just move (x,y) location
        if (parseInt(x) == x && parseInt(y) == y) {
          this.move(x, y);
        }
        else {
          this.x = Math.floor(x + 0.5);
          this.y = Math.floor(y + 0.5);
        }
      }
    }
    
    Point.prototype.move = function (x, y) {
      this.x = x;
      this.y = y;
    }
    
    Point.prototype.translate = function (dx, dy) {
      this.x += dx;
      this.y += dy;
    }
    
    Point.prototype.equals = function (obj) {
      if (obj.constructor.name == "Point") {
        var pt = obj;
        return (this.x == pt.x) && (this.y == pt.y);
      }
      return this == obj;
    }
    
    Point.prototype.toString = function () {
      return new Point().constructor.name + "[x=" + this.x + ",y=" + this.y + "]";
    }
    
    module.exports = Point;
    
    },{}],26:[function(require,module,exports){
    function PointD(x, y) {
      if (x == null && y == null) {
        this.x = 0;
        this.y = 0;
      } else {
        this.x = x;
        this.y = y;
      }
    }
    
    PointD.prototype.getX = function ()
    {
      return this.x;
    };
    
    PointD.prototype.getY = function ()
    {
      return this.y;
    };
    
    PointD.prototype.setX = function (x)
    {
      this.x = x;
    };
    
    PointD.prototype.setY = function (y)
    {
      this.y = y;
    };
    
    PointD.prototype.getDifference = function (pt)
    {
      return new DimensionD(this.x - pt.x, this.y - pt.y);
    };
    
    PointD.prototype.getCopy = function ()
    {
      return new PointD(this.x, this.y);
    };
    
    PointD.prototype.translate = function (dim)
    {
      this.x += dim.width;
      this.y += dim.height;
      return this;
    };
    
    module.exports = PointD;
    
    },{}],27:[function(require,module,exports){
    function RandomSeed() {
    }
    RandomSeed.seed = 1;
    RandomSeed.x = 0;
    
    RandomSeed.nextDouble = function () {
      RandomSeed.x = Math.sin(RandomSeed.seed++) * 10000;
      return RandomSeed.x - Math.floor(RandomSeed.x);
    };
    
    module.exports = RandomSeed;
    
    },{}],28:[function(require,module,exports){
    function RectangleD(x, y, width, height) {
      this.x = 0;
      this.y = 0;
      this.width = 0;
      this.height = 0;
    
      if (x != null && y != null && width != null && height != null) {
        this.x = x;
        this.y = y;
        this.width = width;
        this.height = height;
      }
    }
    
    RectangleD.prototype.getX = function ()
    {
      return this.x;
    };
    
    RectangleD.prototype.setX = function (x)
    {
      this.x = x;
    };
    
    RectangleD.prototype.getY = function ()
    {
      return this.y;
    };
    
    RectangleD.prototype.setY = function (y)
    {
      this.y = y;
    };
    
    RectangleD.prototype.getWidth = function ()
    {
      return this.width;
    };
    
    RectangleD.prototype.setWidth = function (width)
    {
      this.width = width;
    };
    
    RectangleD.prototype.getHeight = function ()
    {
      return this.height;
    };
    
    RectangleD.prototype.setHeight = function (height)
    {
      this.height = height;
    };
    
    RectangleD.prototype.getRight = function ()
    {
      return this.x + this.width;
    };
    
    RectangleD.prototype.getBottom = function ()
    {
      return this.y + this.height;
    };
    
    RectangleD.prototype.intersects = function (a)
    {
      if (this.getRight() < a.x)
      {
        return false;
      }
    
      if (this.getBottom() < a.y)
      {
        return false;
      }
    
      if (a.getRight() < this.x)
      {
        return false;
      }
    
      if (a.getBottom() < this.y)
      {
        return false;
      }
    
      return true;
    };
    
    RectangleD.prototype.getCenterX = function ()
    {
      return this.x + this.width / 2;
    };
    
    RectangleD.prototype.getMinX = function ()
    {
      return this.getX();
    };
    
    RectangleD.prototype.getMaxX = function ()
    {
      return this.getX() + this.width;
    };
    
    RectangleD.prototype.getCenterY = function ()
    {
      return this.y + this.height / 2;
    };
    
    RectangleD.prototype.getMinY = function ()
    {
      return this.getY();
    };
    
    RectangleD.prototype.getMaxY = function ()
    {
      return this.getY() + this.height;
    };
    
    RectangleD.prototype.getWidthHalf = function ()
    {
      return this.width / 2;
    };
    
    RectangleD.prototype.getHeightHalf = function ()
    {
      return this.height / 2;
    };
    
    module.exports = RectangleD;
    
    },{}],29:[function(require,module,exports){
    module.exports = function (instance) {
      instance.toBeTiled = {};
      
      instance.getToBeTiled = function (node) {
        var id = node.data("id");
        //firstly check the previous results
        if (instance.toBeTiled[id] != null) {
          return instance.toBeTiled[id];
        }
    
        //only compound nodes are to be tiled
        var children = node.children();
        if (children == null || children.length == 0) {
          instance.toBeTiled[id] = false;
          return false;
        }
    
        //a compound node is not to be tiled if all of its compound children are not to be tiled
        for (var i = 0; i < children.length; i++) {
          var theChild = children[i];
    
          if (instance.getNodeDegree(theChild) > 0) {
            instance.toBeTiled[id] = false;
            return false;
          }
    
          //pass the children not having the compound structure
          if (theChild.children() == null || theChild.children().length == 0) {
            instance.toBeTiled[theChild.data("id")] = false;
            continue;
          }
    
          if (!instance.getToBeTiled(theChild)) {
            instance.toBeTiled[id] = false;
            return false;
          }
        }
        instance.toBeTiled[id] = true;
        return true;
      };
    
      instance.getNodeDegree = function (node) {
        var id = node.id();
        var edges = instance.options.eles.edges().filter(function (ele, i) {
          if (typeof ele === "number") {
            ele = i;
          }
          var source = ele.data('source');
          var target = ele.data('target');
          if (source != target && (source == id || target == id)) {
            return true;
          }
        });
        return edges.length;
      };
    
      instance.getNodeDegreeWithChildren = function (node) {
        var degree = instance.getNodeDegree(node);
        var children = node.children();
        for (var i = 0; i < children.length; i++) {
          var child = children[i];
          degree += instance.getNodeDegreeWithChildren(child);
        }
        return degree;
      };
    
      instance.groupZeroDegreeMembers = function () {
        // array of [parent_id x oneDegreeNode_id]
        var tempMemberGroups = [];
        var memberGroups = [];
        var self = this;
        var parentMap = {};
    
        for (var i = 0; i < instance.options.eles.nodes().length; i++) {
          parentMap[instance.options.eles.nodes()[i].id()] = true;
        }
    
        // Find all zero degree nodes which aren't covered by a compound
        var zeroDegree = instance.options.eles.nodes().filter(function (ele, i) {
          if (typeof ele === "number") {
            ele = i;
          }
          var pid = ele.data('parent');
          if (pid != undefined && !parentMap[pid]) {
            pid = undefined;
          }
    
          if (self.getNodeDegreeWithChildren(ele) == 0 && (pid == undefined || (pid != undefined && !self.getToBeTiled(ele.parent()[0]))))
            return true;
          else
            return false;
        });
    
        // Create a map of parent node and its zero degree members
        for (var i = 0; i < zeroDegree.length; i++)
        {
          var node = zeroDegree[i];
          var p_id = node.parent().id();
    
          if (p_id != undefined && !parentMap[p_id]) {
            p_id = undefined;
          }
    
          if (typeof tempMemberGroups[p_id] === "undefined")
            tempMemberGroups[p_id] = [];
    
          tempMemberGroups[p_id] = tempMemberGroups[p_id].concat(node);
        }
    
        // If there are at least two nodes at a level, create a dummy compound for them
        for (var p_id in tempMemberGroups) {
          if (tempMemberGroups[p_id].length > 1) {
            var dummyCompoundId = "DummyCompound_" + p_id;
            memberGroups[dummyCompoundId] = tempMemberGroups[p_id];
    
            // Create a dummy compound
            if (instance.options.cy.getElementById(dummyCompoundId).empty()) {
              instance.options.cy.add({
                group: "nodes",
                data: {id: dummyCompoundId, parent: p_id
                }
              });
    
              var dummy = instance.options.cy.nodes()[instance.options.cy.nodes().length - 1];
              instance.options.eles = instance.options.eles.union(dummy);
              dummy.hide();
    
              for (var i = 0; i < tempMemberGroups[p_id].length; i++) {
                if (i == 0) {
                  dummy.scratch('coseBilkent', {tempchildren: []});
                }
                var node = tempMemberGroups[p_id][i];
                var scratchObj = node.scratch('coseBilkent');
                if (!scratchObj) {
                  scratchObj = {};
                  node.scratch('coseBilkent', scratchObj);
                }
                scratchObj['dummy_parent_id'] = dummyCompoundId;
                instance.options.cy.add({
                  group: "nodes",
                  data: {parent: dummyCompoundId, width: node.width(), height: node.height()
                  }
                });
                var tempchild = instance.options.cy.nodes()[instance.options.cy.nodes().length - 1];
                tempchild.hide();
                tempchild.css('width', tempchild.data('width'));
                tempchild.css('height', tempchild.data('height'));
                tempchild.width();
                dummy.scratch('coseBilkent').tempchildren.push(tempchild);
              }
            }
          }
        }
    
        return memberGroups;
      };
    
      instance.performDFSOnCompounds = function (options) {
        var compoundOrder = [];
    
        var roots = instance.getTopMostNodes(instance.options.eles.nodes());
        instance.fillCompexOrderByDFS(compoundOrder, roots);
    
        return compoundOrder;
      };
    
      instance.fillCompexOrderByDFS = function (compoundOrder, children) {
        for (var i = 0; i < children.length; i++) {
          var child = children[i];
          instance.fillCompexOrderByDFS(compoundOrder, child.children());
          if (instance.getToBeTiled(child)) {
            compoundOrder.push(child);
          }
        }
      };
    
      instance.clearCompounds = function () {
        var childGraphMap = [];
    
        // Get compound ordering by finding the inner one first
        var compoundOrder = instance.performDFSOnCompounds(instance.options);
        instance.compoundOrder = compoundOrder;
        instance.processChildrenList(instance.root, instance.getTopMostNodes(instance.options.eles.nodes()), instance.layout);
    
        for (var i = 0; i < compoundOrder.length; i++) {
          // find the corresponding layout node
          var lCompoundNode = instance.idToLNode[compoundOrder[i].id()];
    
          childGraphMap[compoundOrder[i].id()] = compoundOrder[i].children();
    
          // Remove children of compounds
          lCompoundNode.child = null;
        }
    
        // Tile the removed children
        var tiledMemberPack = instance.tileCompoundMembers(childGraphMap);
    
        return tiledMemberPack;
      };
    
      instance.clearZeroDegreeMembers = function (memberGroups) {
        var tiledZeroDegreePack = [];
    
        for (var id in memberGroups) {
          var compoundNode = instance.idToLNode[id];
    
          tiledZeroDegreePack[id] = instance.tileNodes(memberGroups[id]);
    
          // Set the width and height of the dummy compound as calculated
          compoundNode.rect.width = tiledZeroDegreePack[id].width;
          compoundNode.rect.height = tiledZeroDegreePack[id].height;
        }
        return tiledZeroDegreePack;
      };
    
      instance.repopulateCompounds = function (tiledMemberPack) {
        for (var i = instance.compoundOrder.length - 1; i >= 0; i--) {
          var id = instance.compoundOrder[i].id();
          var lCompoundNode = instance.idToLNode[id];
          var horizontalMargin = parseInt(instance.compoundOrder[i].css('padding-left'));
          var verticalMargin = parseInt(instance.compoundOrder[i].css('padding-top'));
    
          instance.adjustLocations(tiledMemberPack[id], lCompoundNode.rect.x, lCompoundNode.rect.y, horizontalMargin, verticalMargin);
        }
      };
    
      instance.repopulateZeroDegreeMembers = function (tiledPack) {
        for (var i in tiledPack) {
          var compound = instance.cy.getElementById(i);
          var compoundNode = instance.idToLNode[i];
          var horizontalMargin = parseInt(compound.css('padding-left'));
          var verticalMargin = parseInt(compound.css('padding-top'));
    
          // Adjust the positions of nodes wrt its compound
          instance.adjustLocations(tiledPack[i], compoundNode.rect.x, compoundNode.rect.y, horizontalMargin, verticalMargin);
    
          var tempchildren = compound.scratch('coseBilkent').tempchildren;
          for (var i = 0; i < tempchildren.length; i++) {
            tempchildren[i].remove();
          }
    
          // Remove the dummy compound
          compound.remove();
        }
      };
    
      /**
       * This method places each zero degree member wrt given (x,y) coordinates (top left).
       */
      instance.adjustLocations = function (organization, x, y, compoundHorizontalMargin, compoundVerticalMargin) {
        x += compoundHorizontalMargin;
        y += compoundVerticalMargin;
    
        var left = x;
    
        for (var i = 0; i < organization.rows.length; i++) {
          var row = organization.rows[i];
          x = left;
          var maxHeight = 0;
    
          for (var j = 0; j < row.length; j++) {
            var lnode = row[j];
            var node = instance.cy.getElementById(lnode.id);
    
            lnode.rect.x = x;// + lnode.rect.width / 2;
            lnode.rect.y = y;// + lnode.rect.height / 2;
    
            x += lnode.rect.width + organization.horizontalPadding;
    
            if (lnode.rect.height > maxHeight)
              maxHeight = lnode.rect.height;
          }
    
          y += maxHeight + organization.verticalPadding;
        }
      };
    
      instance.tileCompoundMembers = function (childGraphMap) {
        var tiledMemberPack = [];
    
        for (var id in childGraphMap) {
          // Access layoutInfo nodes to set the width and height of compounds
          var compoundNode = instance.idToLNode[id];
    
          tiledMemberPack[id] = instance.tileNodes(childGraphMap[id]);
    
          compoundNode.rect.width = tiledMemberPack[id].width + 20;
          compoundNode.rect.height = tiledMemberPack[id].height + 20;
        }
    
        return tiledMemberPack;
      };
    
      instance.tileNodes = function (nodes) {
        var self = this;
        var verticalPadding = typeof self.options.tilingPaddingVertical === 'function' ? self.options.tilingPaddingVertical.call() : self.options.tilingPaddingVertical;
        var horizontalPadding = typeof self.options.tilingPaddingHorizontal === 'function' ? self.options.tilingPaddingHorizontal.call() : self.options.tilingPaddingHorizontal;
        var organization = {
          rows: [],
          rowWidth: [],
          rowHeight: [],
          width: 20,
          height: 20,
          verticalPadding: verticalPadding,
          horizontalPadding: horizontalPadding
        };
    
        var layoutNodes = [];
    
        // Get layout nodes
        for (var i = 0; i < nodes.length; i++) {
          var node = nodes[i];
          var lNode = instance.idToLNode[node.id()];
    
          if (!node.scratch('coseBilkent') || !node.scratch('coseBilkent').dummy_parent_id) {
            var owner = lNode.owner;
            owner.remove(lNode);
    
            instance.gm.resetAllNodes();
            instance.gm.getAllNodes();
          }
    
          layoutNodes.push(lNode);
        }
    
        // Sort the nodes in ascending order of their areas
        layoutNodes.sort(function (n1, n2) {
          if (n1.rect.width * n1.rect.height > n2.rect.width * n2.rect.height)
            return -1;
          if (n1.rect.width * n1.rect.height < n2.rect.width * n2.rect.height)
            return 1;
          return 0;
        });
    
        // Create the organization -> tile members
        for (var i = 0; i < layoutNodes.length; i++) {
          var lNode = layoutNodes[i];
    
          var cyNode = instance.cy.getElementById(lNode.id).parent()[0];
          var minWidth = 0;
          if (cyNode) {
            minWidth = parseInt(cyNode.css('padding-left')) + parseInt(cyNode.css('padding-right'));
          }
    
          if (organization.rows.length == 0) {
            instance.insertNodeToRow(organization, lNode, 0, minWidth);
          }
          else if (instance.canAddHorizontal(organization, lNode.rect.width, lNode.rect.height)) {
            instance.insertNodeToRow(organization, lNode, instance.getShortestRowIndex(organization), minWidth);
          }
          else {
            instance.insertNodeToRow(organization, lNode, organization.rows.length, minWidth);
          }
    
          instance.shiftToLastRow(organization);
        }
    
        return organization;
      };
    
      instance.insertNodeToRow = function (organization, node, rowIndex, minWidth) {
        var minCompoundSize = minWidth;
    
        // Add new row if needed
        if (rowIndex == organization.rows.length) {
          var secondDimension = [];
    
          organization.rows.push(secondDimension);
          organization.rowWidth.push(minCompoundSize);
          organization.rowHeight.push(0);
        }
    
        // Update row width
        var w = organization.rowWidth[rowIndex] + node.rect.width;
    
        if (organization.rows[rowIndex].length > 0) {
          w += organization.horizontalPadding;
        }
    
        organization.rowWidth[rowIndex] = w;
        // Update compound width
        if (organization.width < w) {
          organization.width = w;
        }
    
        // Update height
        var h = node.rect.height;
        if (rowIndex > 0)
          h += organization.verticalPadding;
    
        var extraHeight = 0;
        if (h > organization.rowHeight[rowIndex]) {
          extraHeight = organization.rowHeight[rowIndex];
          organization.rowHeight[rowIndex] = h;
          extraHeight = organization.rowHeight[rowIndex] - extraHeight;
        }
    
        organization.height += extraHeight;
    
        // Insert node
        organization.rows[rowIndex].push(node);
      };
    
    //Scans the rows of an organization and returns the one with the min width
      instance.getShortestRowIndex = function (organization) {
        var r = -1;
        var min = Number.MAX_VALUE;
    
        for (var i = 0; i < organization.rows.length; i++) {
          if (organization.rowWidth[i] < min) {
            r = i;
            min = organization.rowWidth[i];
          }
        }
        return r;
      };
    
    //Scans the rows of an organization and returns the one with the max width
      instance.getLongestRowIndex = function (organization) {
        var r = -1;
        var max = Number.MIN_VALUE;
    
        for (var i = 0; i < organization.rows.length; i++) {
    
          if (organization.rowWidth[i] > max) {
            r = i;
            max = organization.rowWidth[i];
          }
        }
    
        return r;
      };
    
      /**
       * This method checks whether adding extra width to the organization violates
       * the aspect ratio(1) or not.
       */
      instance.canAddHorizontal = function (organization, extraWidth, extraHeight) {
    
        var sri = instance.getShortestRowIndex(organization);
    
        if (sri < 0) {
          return true;
        }
    
        var min = organization.rowWidth[sri];
    
        if (min + organization.horizontalPadding + extraWidth <= organization.width)
          return true;
    
        var hDiff = 0;
    
        // Adding to an existing row
        if (organization.rowHeight[sri] < extraHeight) {
          if (sri > 0)
            hDiff = extraHeight + organization.verticalPadding - organization.rowHeight[sri];
        }
    
        var add_to_row_ratio;
        if (organization.width - min >= extraWidth + organization.horizontalPadding) {
          add_to_row_ratio = (organization.height + hDiff) / (min + extraWidth + organization.horizontalPadding);
        } else {
          add_to_row_ratio = (organization.height + hDiff) / organization.width;
        }
    
        // Adding a new row for this node
        hDiff = extraHeight + organization.verticalPadding;
        var add_new_row_ratio;
        if (organization.width < extraWidth) {
          add_new_row_ratio = (organization.height + hDiff) / extraWidth;
        } else {
          add_new_row_ratio = (organization.height + hDiff) / organization.width;
        }
    
        if (add_new_row_ratio < 1)
          add_new_row_ratio = 1 / add_new_row_ratio;
    
        if (add_to_row_ratio < 1)
          add_to_row_ratio = 1 / add_to_row_ratio;
    
        return add_to_row_ratio < add_new_row_ratio;
      };
    
    
    //If moving the last node from the longest row and adding it to the last
    //row makes the bounding box smaller, do it.
      instance.shiftToLastRow = function (organization) {
        var longest = instance.getLongestRowIndex(organization);
        var last = organization.rowWidth.length - 1;
        var row = organization.rows[longest];
        var node = row[row.length - 1];
    
        var diff = node.width + organization.horizontalPadding;
    
        // Check if there is enough space on the last row
        if (organization.width - organization.rowWidth[last] > diff && longest != last) {
          // Remove the last element of the longest row
          row.splice(-1, 1);
    
          // Push it to the last row
          organization.rows[last].push(node);
    
          organization.rowWidth[longest] = organization.rowWidth[longest] - diff;
          organization.rowWidth[last] = organization.rowWidth[last] + diff;
          organization.width = organization.rowWidth[instance.getLongestRowIndex(organization)];
    
          // Update heights of the organization
          var maxHeight = Number.MIN_VALUE;
          for (var i = 0; i < row.length; i++) {
            if (row[i].height > maxHeight)
              maxHeight = row[i].height;
          }
          if (longest > 0)
            maxHeight += organization.verticalPadding;
    
          var prevTotal = organization.rowHeight[longest] + organization.rowHeight[last];
    
          organization.rowHeight[longest] = maxHeight;
          if (organization.rowHeight[last] < node.height + organization.verticalPadding)
            organization.rowHeight[last] = node.height + organization.verticalPadding;
    
          var finalTotal = organization.rowHeight[longest] + organization.rowHeight[last];
          organization.height += (finalTotal - prevTotal);
    
          instance.shiftToLastRow(organization);
        }
      };
      
      instance.preLayout = function() {
        // Find zero degree nodes and create a compound for each level
        var memberGroups = instance.groupZeroDegreeMembers();
        // Tile and clear children of each compound
        instance.tiledMemberPack = instance.clearCompounds();
        // Separately tile and clear zero degree nodes for each level
        instance.tiledZeroDegreeNodes = instance.clearZeroDegreeMembers(memberGroups);
      };
      
      instance.postLayout = function() {
        var nodes = instance.options.eles.nodes();
        //fill the toBeTiled map
        for (var i = 0; i < nodes.length; i++) {
          instance.getToBeTiled(nodes[i]);
        }
    
        // Repopulate members
        instance.repopulateZeroDegreeMembers(instance.tiledZeroDegreeNodes);
    
        instance.repopulateCompounds(instance.tiledMemberPack);
    
        instance.options.cy.nodes().updateCompoundBounds();
      };
    };
    },{}],30:[function(require,module,exports){
    var PointD = require('./PointD');
    
    function Transform(x, y) {
      this.lworldOrgX = 0.0;
      this.lworldOrgY = 0.0;
      this.ldeviceOrgX = 0.0;
      this.ldeviceOrgY = 0.0;
      this.lworldExtX = 1.0;
      this.lworldExtY = 1.0;
      this.ldeviceExtX = 1.0;
      this.ldeviceExtY = 1.0;
    }
    
    Transform.prototype.getWorldOrgX = function ()
    {
      return this.lworldOrgX;
    }
    
    Transform.prototype.setWorldOrgX = function (wox)
    {
      this.lworldOrgX = wox;
    }
    
    Transform.prototype.getWorldOrgY = function ()
    {
      return this.lworldOrgY;
    }
    
    Transform.prototype.setWorldOrgY = function (woy)
    {
      this.lworldOrgY = woy;
    }
    
    Transform.prototype.getWorldExtX = function ()
    {
      return this.lworldExtX;
    }
    
    Transform.prototype.setWorldExtX = function (wex)
    {
      this.lworldExtX = wex;
    }
    
    Transform.prototype.getWorldExtY = function ()
    {
      return this.lworldExtY;
    }
    
    Transform.prototype.setWorldExtY = function (wey)
    {
      this.lworldExtY = wey;
    }
    
    /* Device related */
    
    Transform.prototype.getDeviceOrgX = function ()
    {
      return this.ldeviceOrgX;
    }
    
    Transform.prototype.setDeviceOrgX = function (dox)
    {
      this.ldeviceOrgX = dox;
    }
    
    Transform.prototype.getDeviceOrgY = function ()
    {
      return this.ldeviceOrgY;
    }
    
    Transform.prototype.setDeviceOrgY = function (doy)
    {
      this.ldeviceOrgY = doy;
    }
    
    Transform.prototype.getDeviceExtX = function ()
    {
      return this.ldeviceExtX;
    }
    
    Transform.prototype.setDeviceExtX = function (dex)
    {
      this.ldeviceExtX = dex;
    }
    
    Transform.prototype.getDeviceExtY = function ()
    {
      return this.ldeviceExtY;
    }
    
    Transform.prototype.setDeviceExtY = function (dey)
    {
      this.ldeviceExtY = dey;
    }
    
    Transform.prototype.transformX = function (x)
    {
      var xDevice = 0.0;
      var worldExtX = this.lworldExtX;
      if (worldExtX != 0.0)
      {
        xDevice = this.ldeviceOrgX +
                ((x - this.lworldOrgX) * this.ldeviceExtX / worldExtX);
      }
    
      return xDevice;
    }
    
    Transform.prototype.transformY = function (y)
    {
      var yDevice = 0.0;
      var worldExtY = this.lworldExtY;
      if (worldExtY != 0.0)
      {
        yDevice = this.ldeviceOrgY +
                ((y - this.lworldOrgY) * this.ldeviceExtY / worldExtY);
      }
    
    
      return yDevice;
    }
    
    Transform.prototype.inverseTransformX = function (x)
    {
      var xWorld = 0.0;
      var deviceExtX = this.ldeviceExtX;
      if (deviceExtX != 0.0)
      {
        xWorld = this.lworldOrgX +
                ((x - this.ldeviceOrgX) * this.lworldExtX / deviceExtX);
      }
    
    
      return xWorld;
    }
    
    Transform.prototype.inverseTransformY = function (y)
    {
      var yWorld = 0.0;
      var deviceExtY = this.ldeviceExtY;
      if (deviceExtY != 0.0)
      {
        yWorld = this.lworldOrgY +
                ((y - this.ldeviceOrgY) * this.lworldExtY / deviceExtY);
      }
      return yWorld;
    }
    
    Transform.prototype.inverseTransformPoint = function (inPoint)
    {
      var outPoint =
              new PointD(this.inverseTransformX(inPoint.x),
                      this.inverseTransformY(inPoint.y));
      return outPoint;
    }
    
    module.exports = Transform;
    
    },{"./PointD":26}],31:[function(require,module,exports){
    function UniqueIDGeneretor() {
    }
    
    UniqueIDGeneretor.lastID = 0;
    
    UniqueIDGeneretor.createID = function (obj) {
      if (UniqueIDGeneretor.isPrimitive(obj)) {
        return obj;
      }
      if (obj.uniqueID != null) {
        return obj.uniqueID;
      }
      obj.uniqueID = UniqueIDGeneretor.getString();
      UniqueIDGeneretor.lastID++;
      return obj.uniqueID;
    }
    
    UniqueIDGeneretor.getString = function (id) {
      if (id == null)
        id = UniqueIDGeneretor.lastID;
      return "Object#" + id + "";
    }
    
    UniqueIDGeneretor.isPrimitive = function (arg) {
      var type = typeof arg;
      return arg == null || (type != "object" && type != "function");
    }
    
    module.exports = UniqueIDGeneretor;
    
    },{}],32:[function(require,module,exports){
    'use strict';
    
    var DimensionD = require('./DimensionD');
    var HashMap = require('./HashMap');
    var HashSet = require('./HashSet');
    var IGeometry = require('./IGeometry');
    var IMath = require('./IMath');
    var Integer = require('./Integer');
    var Point = require('./Point');
    var PointD = require('./PointD');
    var RandomSeed = require('./RandomSeed');
    var RectangleD = require('./RectangleD');
    var Transform = require('./Transform');
    var UniqueIDGeneretor = require('./UniqueIDGeneretor');
    var LGraphObject = require('./LGraphObject');
    var LGraph = require('./LGraph');
    var LEdge = require('./LEdge');
    var LGraphManager = require('./LGraphManager');
    var LNode = require('./LNode');
    var Layout = require('./Layout');
    var LayoutConstants = require('./LayoutConstants');
    var FDLayout = require('./FDLayout');
    var FDLayoutConstants = require('./FDLayoutConstants');
    var FDLayoutEdge = require('./FDLayoutEdge');
    var FDLayoutNode = require('./FDLayoutNode');
    var CoSEConstants = require('./CoSEConstants');
    var CoSEEdge = require('./CoSEEdge');
    var CoSEGraph = require('./CoSEGraph');
    var CoSEGraphManager = require('./CoSEGraphManager');
    var CoSELayout = require('./CoSELayout');
    var CoSENode = require('./CoSENode');
    var TilingExtension = require('./TilingExtension');
    
    var defaults = {
      // Called on `layoutready`
      ready: function () {
      },
      // Called on `layoutstop`
      stop: function () {
      },
      // number of ticks per frame; higher is faster but more jerky
      refresh: 30,
      // Whether to fit the network view after when done
      fit: true,
      // Padding on fit
      padding: 10,
      // Padding for compounds
      paddingCompound: 15,
      // Whether to enable incremental mode
      randomize: true,
      // Node repulsion (non overlapping) multiplier
      nodeRepulsion: 4500,
      // Ideal edge (non nested) length
      idealEdgeLength: 50,
      // Divisor to compute edge forces
      edgeElasticity: 0.45,
      // Nesting factor (multiplier) to compute ideal edge length for nested edges
      nestingFactor: 0.1,
      // Gravity force (constant)
      gravity: 0.25,
      // Maximum number of iterations to perform
      numIter: 2500,
      // For enabling tiling
      tile: true,
      // Type of layout animation. The option set is {'during', 'end', false}
      animate: 'end',
      // Duration for animate:end
      animationDuration: 500,
      // Represents the amount of the vertical space to put between the zero degree members during the tiling operation(can also be a function)
      tilingPaddingVertical: 10,
      // Represents the amount of the horizontal space to put between the zero degree members during the tiling operation(can also be a function)
      tilingPaddingHorizontal: 10,
      // Gravity range (constant) for compounds
      gravityRangeCompound: 1.5,
      // Gravity force (constant) for compounds
      gravityCompound: 1.0,
      // Gravity range (constant)
      gravityRange: 3.8
    };
    
    function extend(defaults, options) {
      var obj = {};
    
      for (var i in defaults) {
        obj[i] = defaults[i];
      }
    
      for (var i in options) {
        obj[i] = options[i];
      }
    
      return obj;
    };
    
    function _CoSELayout(_options) {
      TilingExtension(this); // Extend this instance with tiling functions
      this.options = extend(defaults, _options);
      getUserOptions(this.options);
    }
    
    var getUserOptions = function (options) {
      if (options.nodeRepulsion != null)
        CoSEConstants.DEFAULT_REPULSION_STRENGTH = FDLayoutConstants.DEFAULT_REPULSION_STRENGTH = options.nodeRepulsion;
      if (options.idealEdgeLength != null)
        CoSEConstants.DEFAULT_EDGE_LENGTH = FDLayoutConstants.DEFAULT_EDGE_LENGTH = options.idealEdgeLength;
      if (options.edgeElasticity != null)
        CoSEConstants.DEFAULT_SPRING_STRENGTH = FDLayoutConstants.DEFAULT_SPRING_STRENGTH = options.edgeElasticity;
      if (options.nestingFactor != null)
        CoSEConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR = FDLayoutConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR = options.nestingFactor;
      if (options.gravity != null)
        CoSEConstants.DEFAULT_GRAVITY_STRENGTH = FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH = options.gravity;
      if (options.numIter != null)
        CoSEConstants.MAX_ITERATIONS = FDLayoutConstants.MAX_ITERATIONS = options.numIter;
      if (options.paddingCompound != null)
        CoSEConstants.DEFAULT_GRAPH_MARGIN = FDLayoutConstants.DEFAULT_GRAPH_MARGIN = LayoutConstants.DEFAULT_GRAPH_MARGIN = options.paddingCompound;
      if (options.gravityRange != null)
        CoSEConstants.DEFAULT_GRAVITY_RANGE_FACTOR = FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR = options.gravityRange;
      if(options.gravityCompound != null)
        CoSEConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH = options.gravityCompound;
      if(options.gravityRangeCompound != null)
        CoSEConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR = options.gravityRangeCompound;
    
      CoSEConstants.DEFAULT_INCREMENTAL = FDLayoutConstants.DEFAULT_INCREMENTAL = LayoutConstants.DEFAULT_INCREMENTAL =
              !(options.randomize);
      CoSEConstants.ANIMATE = FDLayoutConstants.ANIMATE = options.animate;
    };
    
    _CoSELayout.prototype.run = function () {
      var ready;
      var frameId;
      var options = this.options;
      var idToLNode = this.idToLNode = {};
      var layout = this.layout = new CoSELayout();
      var self = this;
      
      this.cy = this.options.cy;
    
      this.cy.trigger({ type: 'layoutstart', layout: this });
    
      var gm = layout.newGraphManager();
      this.gm = gm;
    
      var nodes = this.options.eles.nodes();
      var edges = this.options.eles.edges();
    
      this.root = gm.addRoot();
    
      if (!this.options.tile) {
        this.processChildrenList(this.root, this.getTopMostNodes(nodes), layout);
      }
      else {
        this.preLayout();
      }
    
    
      for (var i = 0; i < edges.length; i++) {
        var edge = edges[i];
        var sourceNode = this.idToLNode[edge.data("source")];
        var targetNode = this.idToLNode[edge.data("target")];
        var e1 = gm.add(layout.newEdge(), sourceNode, targetNode);
        e1.id = edge.id();
      }
      
       var getPositions = function(ele, i){
        if(typeof ele === "number") {
          ele = i;
        }
        var theId = ele.data('id');
        var lNode = self.idToLNode[theId];
    
        return {
          x: lNode.getRect().getCenterX(),
          y: lNode.getRect().getCenterY()
        };
      };
      
      /*
       * Reposition nodes in iterations animatedly
       */
      var iterateAnimated = function () {
        // Thigs to perform after nodes are repositioned on screen
        var afterReposition = function() {
          if (options.fit) {
            options.cy.fit(options.eles.nodes(), options.padding);
          }
    
          if (!ready) {
            ready = true;
            self.cy.one('layoutready', options.ready);
            self.cy.trigger({type: 'layoutready', layout: self});
          }
        };
        
        var ticksPerFrame = self.options.refresh;
        var isDone;
    
        for( var i = 0; i < ticksPerFrame && !isDone; i++ ){
          isDone = self.layout.tick();
        }
        
        // If layout is done
        if (isDone) {
          if (self.options.tile) {
            self.postLayout();
          }
          self.options.eles.nodes().positions(getPositions);
          
          afterReposition();
          
          // trigger layoutstop when the layout stops (e.g. finishes)
          self.cy.one('layoutstop', self.options.stop);
          self.cy.trigger('layoutstop');
          self.cy.trigger({ type: 'layoutstop', layout: self });
    
          if (frameId) {
            cancelAnimationFrame(frameId);
          }
          
          self.options.eles.nodes().removeScratch('coseBilkent');
          ready = false;
          return;
        }
        
        var animationData = self.layout.getPositionsData(); // Get positions of layout nodes note that all nodes may not be layout nodes because of tiling
        // Position nodes, for the nodes who are not passed to layout because of tiling return the position of their dummy compound
        options.eles.nodes().positions(function (ele, i) {
          if (typeof ele === "number") {
            ele = i;
          }
          if (ele.scratch('coseBilkent') && ele.scratch('coseBilkent').dummy_parent_id) {
            var dummyParent = ele.scratch('coseBilkent').dummy_parent_id;
            return {
              x: dummyParent.x,
              y: dummyParent.y
            };
          }
          var theId = ele.data('id');
          var pNode = animationData[theId];
          var temp = ele;
          while (pNode == null) {
            temp = temp.parent()[0];
            pNode = animationData[temp.id()];
            animationData[theId] = pNode;
          }
          return {
            x: pNode.x,
            y: pNode.y
          };
        });
    
        afterReposition();
    
        frameId = requestAnimationFrame(iterateAnimated);
      };
      
      /*
      * Listen 'layoutstarted' event and start animated iteration if animate option is 'during'
      */
      layout.addListener('layoutstarted', function () {
        if (self.options.animate === 'during') {
          frameId = requestAnimationFrame(iterateAnimated);
        }
      });
      
      layout.runLayout(); // Run cose layout
      
      /*
       * If animate option is not 'during' ('end' or false) perform these here (If it is 'during' similar things are already performed)
       */
      if(this.options.animate !== 'during'){
        setTimeout(function() {
          if (self.options.tile) {
            self.postLayout();
          }
          self.options.eles.nodes().not(":parent").layoutPositions(self, self.options, getPositions); // Use layout positions to reposition the nodes it considers the options parameter
          self.options.eles.nodes().removeScratch('coseBilkent');
          ready = false;
        }, 0);
        
      }
    
      return this; // chaining
    };
    
    //Get the top most ones of a list of nodes
    _CoSELayout.prototype.getTopMostNodes = function(nodes) {
      var nodesMap = {};
      for (var i = 0; i < nodes.length; i++) {
          nodesMap[nodes[i].id()] = true;
      }
      var roots = nodes.filter(function (ele, i) {
          if(typeof ele === "number") {
            ele = i;
          }
          var parent = ele.parent()[0];
          while(parent != null){
            if(nodesMap[parent.id()]){
              return false;
            }
            parent = parent.parent()[0];
          }
          return true;
      });
    
      return roots;
    };
    
    _CoSELayout.prototype.processChildrenList = function (parent, children, layout) {
      var size = children.length;
      for (var i = 0; i < size; i++) {
        var theChild = children[i];
        this.options.eles.nodes().length;
        var children_of_children = theChild.children();
        var theNode;
    
        if (theChild.width() != null
                && theChild.height() != null) {
          theNode = parent.add(new CoSENode(layout.graphManager,
                  new PointD(theChild.position('x'), theChild.position('y')),
                  new DimensionD(parseFloat(theChild.width()),
                          parseFloat(theChild.height()))));
        }
        else {
          theNode = parent.add(new CoSENode(this.graphManager));
        }
        theNode.id = theChild.data("id");
        this.idToLNode[theChild.data("id")] = theNode;
    
        if (isNaN(theNode.rect.x)) {
          theNode.rect.x = 0;
        }
    
        if (isNaN(theNode.rect.y)) {
          theNode.rect.y = 0;
        }
    
        if (children_of_children != null && children_of_children.length > 0) {
          var theNewGraph;
          theNewGraph = layout.getGraphManager().add(layout.newGraph(), theNode);
          this.processChildrenList(theNewGraph, children_of_children, layout);
        }
      }
    };
    
    /**
     * @brief : called on continuous layouts to stop them before they finish
     */
    _CoSELayout.prototype.stop = function () {
      this.stopped = true;
      
      this.trigger('layoutstop');
    
      return this; // chaining
    };
    
    module.exports = function get(cytoscape) {
      return _CoSELayout;
    };
    
    },{"./CoSEConstants":1,"./CoSEEdge":2,"./CoSEGraph":3,"./CoSEGraphManager":4,"./CoSELayout":5,"./CoSENode":6,"./DimensionD":7,"./FDLayout":9,"./FDLayoutConstants":10,"./FDLayoutEdge":11,"./FDLayoutNode":12,"./HashMap":13,"./HashSet":14,"./IGeometry":15,"./IMath":16,"./Integer":17,"./LEdge":18,"./LGraph":19,"./LGraphManager":20,"./LGraphObject":21,"./LNode":22,"./Layout":23,"./LayoutConstants":24,"./Point":25,"./PointD":26,"./RandomSeed":27,"./RectangleD":28,"./TilingExtension":29,"./Transform":30,"./UniqueIDGeneretor":31}],33:[function(require,module,exports){
    'use strict';
    
    // registers the extension on a cytoscape lib ref
    var getLayout = require('./Layout');
    
    var register = function( cytoscape ){
      var Layout = getLayout( cytoscape );
    
      cytoscape('layout', 'cose-bilkent', Layout);
    };
    
    // auto reg for globals
    if( typeof cytoscape !== 'undefined' ){
      register( cytoscape );
    }
    
    module.exports = register;
    
    },{"./Layout":32}]},{},[33])(33)
    });
    //# 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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","var FDLayoutConstants = require('./FDLayoutConstants');\n\nfunction CoSEConstants() {\n}\n\n//CoSEConstants inherits static props in FDLayoutConstants\nfor (var prop in FDLayoutConstants) {\n  CoSEConstants[prop] = FDLayoutConstants[prop];\n}\n\nCoSEConstants.DEFAULT_USE_MULTI_LEVEL_SCALING = false;\nCoSEConstants.DEFAULT_RADIAL_SEPARATION = FDLayoutConstants.DEFAULT_EDGE_LENGTH;\nCoSEConstants.DEFAULT_COMPONENT_SEPERATION = 60;\n\nmodule.exports = CoSEConstants;\n","var FDLayoutEdge = require('./FDLayoutEdge');\n\nfunction CoSEEdge(source, target, vEdge) {\n  FDLayoutEdge.call(this, source, target, vEdge);\n}\n\nCoSEEdge.prototype = Object.create(FDLayoutEdge.prototype);\nfor (var prop in FDLayoutEdge) {\n  CoSEEdge[prop] = FDLayoutEdge[prop];\n}\n\nmodule.exports = CoSEEdge\n","var LGraph = require('./LGraph');\n\nfunction CoSEGraph(parent, graphMgr, vGraph) {\n  LGraph.call(this, parent, graphMgr, vGraph);\n}\n\nCoSEGraph.prototype = Object.create(LGraph.prototype);\nfor (var prop in LGraph) {\n  CoSEGraph[prop] = LGraph[prop];\n}\n\nmodule.exports = CoSEGraph;\n","var LGraphManager = require('./LGraphManager');\n\nfunction CoSEGraphManager(layout) {\n  LGraphManager.call(this, layout);\n}\n\nCoSEGraphManager.prototype = Object.create(LGraphManager.prototype);\nfor (var prop in LGraphManager) {\n  CoSEGraphManager[prop] = LGraphManager[prop];\n}\n\nmodule.exports = CoSEGraphManager;\n","var FDLayout = require('./FDLayout');\nvar CoSEGraphManager = require('./CoSEGraphManager');\nvar CoSEGraph = require('./CoSEGraph');\nvar CoSENode = require('./CoSENode');\nvar CoSEEdge = require('./CoSEEdge');\nvar CoSEConstants = require('./CoSEConstants');\nvar FDLayoutConstants = require('./FDLayoutConstants');\nvar LayoutConstants = require('./LayoutConstants');\nvar Point = require('./Point');\nvar PointD = require('./PointD');\nvar Layout = require('./Layout');\nvar Integer = require('./Integer');\nvar IGeometry = require('./IGeometry');\nvar LGraph = require('./LGraph');\nvar Transform = require('./Transform');\n\nfunction CoSELayout() {\n  FDLayout.call(this);\n}\n\nCoSELayout.prototype = Object.create(FDLayout.prototype);\n\nfor (var prop in FDLayout) {\n  CoSELayout[prop] = FDLayout[prop];\n}\n\nCoSELayout.prototype.newGraphManager = function () {\n  var gm = new CoSEGraphManager(this);\n  this.graphManager = gm;\n  return gm;\n};\n\nCoSELayout.prototype.newGraph = function (vGraph) {\n  return new CoSEGraph(null, this.graphManager, vGraph);\n};\n\nCoSELayout.prototype.newNode = function (vNode) {\n  return new CoSENode(this.graphManager, vNode);\n};\n\nCoSELayout.prototype.newEdge = function (vEdge) {\n  return new CoSEEdge(null, null, vEdge);\n};\n\nCoSELayout.prototype.initParameters = function () {\n  FDLayout.prototype.initParameters.call(this, arguments);\n  if (!this.isSubLayout) {\n    if (CoSEConstants.DEFAULT_EDGE_LENGTH < 10)\n    {\n      this.idealEdgeLength = 10;\n    }\n    else\n    {\n      this.idealEdgeLength = CoSEConstants.DEFAULT_EDGE_LENGTH;\n    }\n\n    this.useSmartIdealEdgeLengthCalculation =\n            CoSEConstants.DEFAULT_USE_SMART_IDEAL_EDGE_LENGTH_CALCULATION;\n    this.springConstant =\n            FDLayoutConstants.DEFAULT_SPRING_STRENGTH;\n    this.repulsionConstant =\n            FDLayoutConstants.DEFAULT_REPULSION_STRENGTH;\n    this.gravityConstant =\n            FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH;\n    this.compoundGravityConstant =\n            FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH;\n    this.gravityRangeFactor =\n            FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR;\n    this.compoundGravityRangeFactor =\n            FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR;\n  }\n};\n\nCoSELayout.prototype.layout = function () {\n  var createBendsAsNeeded = LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED;\n  if (createBendsAsNeeded)\n  {\n    this.createBendpoints();\n    this.graphManager.resetAllEdges();\n  }\n\n  this.level = 0;\n  return this.classicLayout();\n};\n\nCoSELayout.prototype.classicLayout = function () {\n  this.calculateNodesToApplyGravitationTo();\n  this.graphManager.calcLowestCommonAncestors();\n  this.graphManager.calcInclusionTreeDepths();\n  this.graphManager.getRoot().calcEstimatedSize();\n  this.calcIdealEdgeLengths();\n  if (!this.incremental)\n  {\n    var forest = this.getFlatForest();\n\n    // The graph associated with this layout is flat and a forest\n    if (forest.length > 0)\n\n    {\n      this.positionNodesRadially(forest);\n    }\n    // The graph associated with this layout is not flat or a forest\n    else\n    {\n      this.positionNodesRandomly();\n    }\n  }\n\n  this.initSpringEmbedder();\n  this.runSpringEmbedder();\n\n  return true;\n};\n\nCoSELayout.prototype.tick = function() {\n  this.totalIterations++;\n  \n  if (this.totalIterations === this.maxIterations) {\n    return true; // Layout is not ended return true\n  }\n  \n  if (this.totalIterations % FDLayoutConstants.CONVERGENCE_CHECK_PERIOD == 0)\n  {\n    if (this.isConverged())\n    {\n      return true; // Layout is not ended return true\n    }\n\n    this.coolingFactor = this.initialCoolingFactor *\n            ((this.maxIterations - this.totalIterations) / this.maxIterations);\n    this.animationPeriod = Math.ceil(this.initialAnimationPeriod * Math.sqrt(this.coolingFactor));\n\n  }\n  this.totalDisplacement = 0;\n  this.graphManager.updateBounds();\n  this.calcSpringForces();\n  this.calcRepulsionForces();\n  this.calcGravitationalForces();\n  this.moveNodes();\n  this.animate();\n  \n  return false; // Layout is not ended yet return false\n};\n\nCoSELayout.prototype.getPositionsData = function() {\n  var allNodes = this.graphManager.getAllNodes();\n  var pData = {};\n  for (var i = 0; i < allNodes.length; i++) {\n    var rect = allNodes[i].rect;\n    var id = allNodes[i].id;\n    pData[id] = {\n      id: id,\n      x: rect.getCenterX(),\n      y: rect.getCenterY(),\n      w: rect.width,\n      h: rect.height\n    };\n  }\n  \n  return pData;\n};\n\nCoSELayout.prototype.runSpringEmbedder = function () {\n  this.initialAnimationPeriod = 25;\n  this.animationPeriod = this.initialAnimationPeriod;\n  var layoutEnded = false;\n  \n  // If aminate option is 'during' signal that layout is supposed to start iterating\n  if ( FDLayoutConstants.ANIMATE === 'during' ) {\n    this.emit('layoutstarted');\n  }\n  else {\n    // If aminate option is 'during' tick() function will be called on index.js\n    while (!layoutEnded) {\n      layoutEnded = this.tick();\n    }\n\n    this.graphManager.updateBounds();\n  }\n};\n\nCoSELayout.prototype.calculateNodesToApplyGravitationTo = function () {\n  var nodeList = [];\n  var graph;\n\n  var graphs = this.graphManager.getGraphs();\n  var size = graphs.length;\n  var i;\n  for (i = 0; i < size; i++)\n  {\n    graph = graphs[i];\n\n    graph.updateConnected();\n\n    if (!graph.isConnected)\n    {\n      nodeList = nodeList.concat(graph.getNodes());\n    }\n  }\n\n  this.graphManager.setAllNodesToApplyGravitation(nodeList);\n};\n\nCoSELayout.prototype.createBendpoints = function () {\n  var edges = [];\n  edges = edges.concat(this.graphManager.getAllEdges());\n  var visited = new HashSet();\n  var i;\n  for (i = 0; i < edges.length; i++)\n  {\n    var edge = edges[i];\n\n    if (!visited.contains(edge))\n    {\n      var source = edge.getSource();\n      var target = edge.getTarget();\n\n      if (source == target)\n      {\n        edge.getBendpoints().push(new PointD());\n        edge.getBendpoints().push(new PointD());\n        this.createDummyNodesForBendpoints(edge);\n        visited.add(edge);\n      }\n      else\n      {\n        var edgeList = [];\n\n        edgeList = edgeList.concat(source.getEdgeListToNode(target));\n        edgeList = edgeList.concat(target.getEdgeListToNode(source));\n\n        if (!visited.contains(edgeList[0]))\n        {\n          if (edgeList.length > 1)\n          {\n            var k;\n            for (k = 0; k < edgeList.length; k++)\n            {\n              var multiEdge = edgeList[k];\n              multiEdge.getBendpoints().push(new PointD());\n              this.createDummyNodesForBendpoints(multiEdge);\n            }\n          }\n          visited.addAll(list);\n        }\n      }\n    }\n\n    if (visited.size() == edges.length)\n    {\n      break;\n    }\n  }\n};\n\nCoSELayout.prototype.positionNodesRadially = function (forest) {\n  // We tile the trees to a grid row by row; first tree starts at (0,0)\n  var currentStartingPoint = new Point(0, 0);\n  var numberOfColumns = Math.ceil(Math.sqrt(forest.length));\n  var height = 0;\n  var currentY = 0;\n  var currentX = 0;\n  var point = new PointD(0, 0);\n\n  for (var i = 0; i < forest.length; i++)\n  {\n    if (i % numberOfColumns == 0)\n    {\n      // Start of a new row, make the x coordinate 0, increment the\n      // y coordinate with the max height of the previous row\n      currentX = 0;\n      currentY = height;\n\n      if (i != 0)\n      {\n        currentY += CoSEConstants.DEFAULT_COMPONENT_SEPERATION;\n      }\n\n      height = 0;\n    }\n\n    var tree = forest[i];\n\n    // Find the center of the tree\n    var centerNode = Layout.findCenterOfTree(tree);\n\n    // Set the staring point of the next tree\n    currentStartingPoint.x = currentX;\n    currentStartingPoint.y = currentY;\n\n    // Do a radial layout starting with the center\n    point =\n            CoSELayout.radialLayout(tree, centerNode, currentStartingPoint);\n\n    if (point.y > height)\n    {\n      height = Math.floor(point.y);\n    }\n\n    currentX = Math.floor(point.x + CoSEConstants.DEFAULT_COMPONENT_SEPERATION);\n  }\n\n  this.transform(\n          new PointD(LayoutConstants.WORLD_CENTER_X - point.x / 2,\n                  LayoutConstants.WORLD_CENTER_Y - point.y / 2));\n};\n\nCoSELayout.radialLayout = function (tree, centerNode, startingPoint) {\n  var radialSep = Math.max(this.maxDiagonalInTree(tree),\n          CoSEConstants.DEFAULT_RADIAL_SEPARATION);\n  CoSELayout.branchRadialLayout(centerNode, null, 0, 359, 0, radialSep);\n  var bounds = LGraph.calculateBounds(tree);\n\n  var transform = new Transform();\n  transform.setDeviceOrgX(bounds.getMinX());\n  transform.setDeviceOrgY(bounds.getMinY());\n  transform.setWorldOrgX(startingPoint.x);\n  transform.setWorldOrgY(startingPoint.y);\n\n  for (var i = 0; i < tree.length; i++)\n  {\n    var node = tree[i];\n    node.transform(transform);\n  }\n\n  var bottomRight =\n          new PointD(bounds.getMaxX(), bounds.getMaxY());\n\n  return transform.inverseTransformPoint(bottomRight);\n};\n\nCoSELayout.branchRadialLayout = function (node, parentOfNode, startAngle, endAngle, distance, radialSeparation) {\n  // First, position this node by finding its angle.\n  var halfInterval = ((endAngle - startAngle) + 1) / 2;\n\n  if (halfInterval < 0)\n  {\n    halfInterval += 180;\n  }\n\n  var nodeAngle = (halfInterval + startAngle) % 360;\n  var teta = (nodeAngle * IGeometry.TWO_PI) / 360;\n\n  // Make polar to java cordinate conversion.\n  var cos_teta = Math.cos(teta);\n  var x_ = distance * Math.cos(teta);\n  var y_ = distance * Math.sin(teta);\n\n  node.setCenter(x_, y_);\n\n  // Traverse all neighbors of this node and recursively call this\n  // function.\n  var neighborEdges = [];\n  neighborEdges = neighborEdges.concat(node.getEdges());\n  var childCount = neighborEdges.length;\n\n  if (parentOfNode != null)\n  {\n    childCount--;\n  }\n\n  var branchCount = 0;\n\n  var incEdgesCount = neighborEdges.length;\n  var startIndex;\n\n  var edges = node.getEdgesBetween(parentOfNode);\n\n  // If there are multiple edges, prune them until there remains only one\n  // edge.\n  while (edges.length > 1)\n  {\n    //neighborEdges.remove(edges.remove(0));\n    var temp = edges[0];\n    edges.splice(0, 1);\n    var index = neighborEdges.indexOf(temp);\n    if (index >= 0) {\n      neighborEdges.splice(index, 1);\n    }\n    incEdgesCount--;\n    childCount--;\n  }\n\n  if (parentOfNode != null)\n  {\n    //assert edges.length == 1;\n    startIndex = (neighborEdges.indexOf(edges[0]) + 1) % incEdgesCount;\n  }\n  else\n  {\n    startIndex = 0;\n  }\n\n  var stepAngle = Math.abs(endAngle - startAngle) / childCount;\n\n  for (var i = startIndex;\n          branchCount != childCount;\n          i = (++i) % incEdgesCount)\n  {\n    var currentNeighbor =\n            neighborEdges[i].getOtherEnd(node);\n\n    // Don't back traverse to root node in current tree.\n    if (currentNeighbor == parentOfNode)\n    {\n      continue;\n    }\n\n    var childStartAngle =\n            (startAngle + branchCount * stepAngle) % 360;\n    var childEndAngle = (childStartAngle + stepAngle) % 360;\n\n    CoSELayout.branchRadialLayout(currentNeighbor,\n            node,\n            childStartAngle, childEndAngle,\n            distance + radialSeparation, radialSeparation);\n\n    branchCount++;\n  }\n};\n\nCoSELayout.maxDiagonalInTree = function (tree) {\n  var maxDiagonal = Integer.MIN_VALUE;\n\n  for (var i = 0; i < tree.length; i++)\n  {\n    var node = tree[i];\n    var diagonal = node.getDiagonal();\n\n    if (diagonal > maxDiagonal)\n    {\n      maxDiagonal = diagonal;\n    }\n  }\n\n  return maxDiagonal;\n};\n\nCoSELayout.prototype.calcRepulsionRange = function () {\n  // formula is 2 x (level + 1) x idealEdgeLength\n  return (2 * (this.level + 1) * this.idealEdgeLength);\n};\n\nmodule.exports = CoSELayout;\n","var FDLayoutNode = require('./FDLayoutNode');\nvar IMath = require('./IMath');\n\nfunction CoSENode(gm, loc, size, vNode) {\n  FDLayoutNode.call(this, gm, loc, size, vNode);\n}\n\n\nCoSENode.prototype = Object.create(FDLayoutNode.prototype);\nfor (var prop in FDLayoutNode) {\n  CoSENode[prop] = FDLayoutNode[prop];\n}\n\nCoSENode.prototype.move = function ()\n{\n  var layout = this.graphManager.getLayout();\n  this.displacementX = layout.coolingFactor *\n          (this.springForceX + this.repulsionForceX + this.gravitationForceX);\n  this.displacementY = layout.coolingFactor *\n          (this.springForceY + this.repulsionForceY + this.gravitationForceY);\n\n\n  if (Math.abs(this.displacementX) > layout.coolingFactor * layout.maxNodeDisplacement)\n  {\n    this.displacementX = layout.coolingFactor * layout.maxNodeDisplacement *\n            IMath.sign(this.displacementX);\n  }\n\n  if (Math.abs(this.displacementY) > layout.coolingFactor * layout.maxNodeDisplacement)\n  {\n    this.displacementY = layout.coolingFactor * layout.maxNodeDisplacement *\n            IMath.sign(this.displacementY);\n  }\n\n  // a simple node, just move it\n  if (this.child == null)\n  {\n    this.moveBy(this.displacementX, this.displacementY);\n  }\n  // an empty compound node, again just move it\n  else if (this.child.getNodes().length == 0)\n  {\n    this.moveBy(this.displacementX, this.displacementY);\n  }\n  // non-empty compound node, propogate movement to children as well\n  else\n  {\n    this.propogateDisplacementToChildren(this.displacementX,\n            this.displacementY);\n  }\n\n  layout.totalDisplacement +=\n          Math.abs(this.displacementX) + Math.abs(this.displacementY);\n\n  this.springForceX = 0;\n  this.springForceY = 0;\n  this.repulsionForceX = 0;\n  this.repulsionForceY = 0;\n  this.gravitationForceX = 0;\n  this.gravitationForceY = 0;\n  this.displacementX = 0;\n  this.displacementY = 0;\n};\n\nCoSENode.prototype.propogateDisplacementToChildren = function (dX, dY)\n{\n  var nodes = this.getChild().getNodes();\n  var node;\n  for (var i = 0; i < nodes.length; i++)\n  {\n    node = nodes[i];\n    if (node.getChild() == null)\n    {\n      node.moveBy(dX, dY);\n      node.displacementX += dX;\n      node.displacementY += dY;\n    }\n    else\n    {\n      node.propogateDisplacementToChildren(dX, dY);\n    }\n  }\n};\n\nCoSENode.prototype.setPred1 = function (pred1)\n{\n  this.pred1 = pred1;\n};\n\nCoSENode.prototype.getPred1 = function ()\n{\n  return pred1;\n};\n\nCoSENode.prototype.getPred2 = function ()\n{\n  return pred2;\n};\n\nCoSENode.prototype.setNext = function (next)\n{\n  this.next = next;\n};\n\nCoSENode.prototype.getNext = function ()\n{\n  return next;\n};\n\nCoSENode.prototype.setProcessed = function (processed)\n{\n  this.processed = processed;\n};\n\nCoSENode.prototype.isProcessed = function ()\n{\n  return processed;\n};\n\nmodule.exports = CoSENode;\n","function DimensionD(width, height) {\n  this.width = 0;\n  this.height = 0;\n  if (width !== null && height !== null) {\n    this.height = height;\n    this.width = width;\n  }\n}\n\nDimensionD.prototype.getWidth = function ()\n{\n  return this.width;\n};\n\nDimensionD.prototype.setWidth = function (width)\n{\n  this.width = width;\n};\n\nDimensionD.prototype.getHeight = function ()\n{\n  return this.height;\n};\n\nDimensionD.prototype.setHeight = function (height)\n{\n  this.height = height;\n};\n\nmodule.exports = DimensionD;\n","function Emitter(){\n  this.listeners = [];\n}\n\nvar p = Emitter.prototype;\n\np.addListener = function( event, callback ){\n  this.listeners.push({\n    event: event,\n    callback: callback\n  });\n};\n\np.removeListener = function( event, callback ){\n  for( var i = this.listeners.length; i >= 0; i-- ){\n    var l = this.listeners[i];\n\n    if( l.event === event && l.callback === callback ){\n      this.listeners.splice( i, 1 );\n    }\n  }\n};\n\np.emit = function( event, data ){\n  for( var i = 0; i < this.listeners.length; i++ ){\n    var l = this.listeners[i];\n\n    if( event === l.event ){\n      l.callback( data );\n    }\n  }\n};\n\nmodule.exports = Emitter;\n","var Layout = require('./Layout');\nvar FDLayoutConstants = require('./FDLayoutConstants');\nvar LayoutConstants = require('./LayoutConstants');\nvar IGeometry = require('./IGeometry');\nvar IMath = require('./IMath');\n\nfunction FDLayout() {\n  Layout.call(this);\n\n  this.useSmartIdealEdgeLengthCalculation = FDLayoutConstants.DEFAULT_USE_SMART_IDEAL_EDGE_LENGTH_CALCULATION;\n  this.idealEdgeLength = FDLayoutConstants.DEFAULT_EDGE_LENGTH;\n  this.springConstant = FDLayoutConstants.DEFAULT_SPRING_STRENGTH;\n  this.repulsionConstant = FDLayoutConstants.DEFAULT_REPULSION_STRENGTH;\n  this.gravityConstant = FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH;\n  this.compoundGravityConstant = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH;\n  this.gravityRangeFactor = FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR;\n  this.compoundGravityRangeFactor = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR;\n  this.displacementThresholdPerNode = (3.0 * FDLayoutConstants.DEFAULT_EDGE_LENGTH) / 100;\n  this.coolingFactor = 1.0;\n  this.initialCoolingFactor = 1.0;\n  this.totalDisplacement = 0.0;\n  this.oldTotalDisplacement = 0.0;\n  this.maxIterations = FDLayoutConstants.MAX_ITERATIONS;\n}\n\nFDLayout.prototype = Object.create(Layout.prototype);\n\nfor (var prop in Layout) {\n  FDLayout[prop] = Layout[prop];\n}\n\nFDLayout.prototype.initParameters = function () {\n  Layout.prototype.initParameters.call(this, arguments);\n\n  if (this.layoutQuality == LayoutConstants.DRAFT_QUALITY)\n  {\n    this.displacementThresholdPerNode += 0.30;\n    this.maxIterations *= 0.8;\n  }\n  else if (this.layoutQuality == LayoutConstants.PROOF_QUALITY)\n  {\n    this.displacementThresholdPerNode -= 0.30;\n    this.maxIterations *= 1.2;\n  }\n\n  this.totalIterations = 0;\n  this.notAnimatedIterations = 0;\n\n//    this.useFRGridVariant = layoutOptionsPack.smartRepulsionRangeCalc;\n};\n\nFDLayout.prototype.calcIdealEdgeLengths = function () {\n  var edge;\n  var lcaDepth;\n  var source;\n  var target;\n  var sizeOfSourceInLca;\n  var sizeOfTargetInLca;\n\n  var allEdges = this.getGraphManager().getAllEdges();\n  for (var i = 0; i < allEdges.length; i++)\n  {\n    edge = allEdges[i];\n\n    edge.idealLength = this.idealEdgeLength;\n\n    if (edge.isInterGraph)\n    {\n      source = edge.getSource();\n      target = edge.getTarget();\n\n      sizeOfSourceInLca = edge.getSourceInLca().getEstimatedSize();\n      sizeOfTargetInLca = edge.getTargetInLca().getEstimatedSize();\n\n      if (this.useSmartIdealEdgeLengthCalculation)\n      {\n        edge.idealLength += sizeOfSourceInLca + sizeOfTargetInLca -\n                2 * LayoutConstants.SIMPLE_NODE_SIZE;\n      }\n\n      lcaDepth = edge.getLca().getInclusionTreeDepth();\n\n      edge.idealLength += FDLayoutConstants.DEFAULT_EDGE_LENGTH *\n              FDLayoutConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR *\n              (source.getInclusionTreeDepth() +\n                      target.getInclusionTreeDepth() - 2 * lcaDepth);\n    }\n  }\n};\n\nFDLayout.prototype.initSpringEmbedder = function () {\n\n  if (this.incremental)\n  {\n    this.coolingFactor = 0.8;\n    this.initialCoolingFactor = 0.8;\n    this.maxNodeDisplacement =\n            FDLayoutConstants.MAX_NODE_DISPLACEMENT_INCREMENTAL;\n  }\n  else\n  {\n    this.coolingFactor = 1.0;\n    this.initialCoolingFactor = 1.0;\n    this.maxNodeDisplacement =\n            FDLayoutConstants.MAX_NODE_DISPLACEMENT;\n  }\n\n  this.maxIterations =\n          Math.max(this.getAllNodes().length * 5, this.maxIterations);\n\n  this.totalDisplacementThreshold =\n          this.displacementThresholdPerNode * this.getAllNodes().length;\n\n  this.repulsionRange = this.calcRepulsionRange();\n};\n\nFDLayout.prototype.calcSpringForces = function () {\n  var lEdges = this.getAllEdges();\n  var edge;\n\n  for (var i = 0; i < lEdges.length; i++)\n  {\n    edge = lEdges[i];\n\n    this.calcSpringForce(edge, edge.idealLength);\n  }\n};\n\nFDLayout.prototype.calcRepulsionForces = function () {\n  var i, j;\n  var nodeA, nodeB;\n  var lNodes = this.getAllNodes();\n\n  for (i = 0; i < lNodes.length; i++)\n  {\n    nodeA = lNodes[i];\n\n    for (j = i + 1; j < lNodes.length; j++)\n    {\n      nodeB = lNodes[j];\n\n      // If both nodes are not members of the same graph, skip.\n      if (nodeA.getOwner() != nodeB.getOwner())\n      {\n        continue;\n      }\n\n      this.calcRepulsionForce(nodeA, nodeB);\n    }\n  }\n};\n\nFDLayout.prototype.calcGravitationalForces = function () {\n  var node;\n  var lNodes = this.getAllNodesToApplyGravitation();\n\n  for (var i = 0; i < lNodes.length; i++)\n  {\n    node = lNodes[i];\n    this.calcGravitationalForce(node);\n  }\n};\n\nFDLayout.prototype.moveNodes = function () {\n  var lNodes = this.getAllNodes();\n  var node;\n\n  for (var i = 0; i < lNodes.length; i++)\n  {\n    node = lNodes[i];\n    node.move();\n  }\n}\n\nFDLayout.prototype.calcSpringForce = function (edge, idealLength) {\n  var sourceNode = edge.getSource();\n  var targetNode = edge.getTarget();\n\n  var length;\n  var springForce;\n  var springForceX;\n  var springForceY;\n\n  // Update edge length\n  if (this.uniformLeafNodeSizes &&\n          sourceNode.getChild() == null && targetNode.getChild() == null)\n  {\n    edge.updateLengthSimple();\n  }\n  else\n  {\n    edge.updateLength();\n\n    if (edge.isOverlapingSourceAndTarget)\n    {\n      return;\n    }\n  }\n\n  length = edge.getLength();\n\n  // Calculate spring forces\n  springForce = this.springConstant * (length - idealLength);\n\n  // Project force onto x and y axes\n  springForceX = springForce * (edge.lengthX / length);\n  springForceY = springForce * (edge.lengthY / length);\n\n  // Apply forces on the end nodes\n  sourceNode.springForceX += springForceX;\n  sourceNode.springForceY += springForceY;\n  targetNode.springForceX -= springForceX;\n  targetNode.springForceY -= springForceY;\n};\n\nFDLayout.prototype.calcRepulsionForce = function (nodeA, nodeB) {\n  var rectA = nodeA.getRect();\n  var rectB = nodeB.getRect();\n  var overlapAmount = new Array(2);\n  var clipPoints = new Array(4);\n  var distanceX;\n  var distanceY;\n  var distanceSquared;\n  var distance;\n  var repulsionForce;\n  var repulsionForceX;\n  var repulsionForceY;\n\n  if (rectA.intersects(rectB))// two nodes overlap\n  {\n    // calculate separation amount in x and y directions\n    IGeometry.calcSeparationAmount(rectA,\n            rectB,\n            overlapAmount,\n            FDLayoutConstants.DEFAULT_EDGE_LENGTH / 2.0);\n\n    repulsionForceX = overlapAmount[0];\n    repulsionForceY = overlapAmount[1];\n  }\n  else// no overlap\n  {\n    // calculate distance\n\n    if (this.uniformLeafNodeSizes &&\n            nodeA.getChild() == null && nodeB.getChild() == null)// simply base repulsion on distance of node centers\n    {\n      distanceX = rectB.getCenterX() - rectA.getCenterX();\n      distanceY = rectB.getCenterY() - rectA.getCenterY();\n    }\n    else// use clipping points\n    {\n      IGeometry.getIntersection(rectA, rectB, clipPoints);\n\n      distanceX = clipPoints[2] - clipPoints[0];\n      distanceY = clipPoints[3] - clipPoints[1];\n    }\n\n    // No repulsion range. FR grid variant should take care of this.\n    if (Math.abs(distanceX) < FDLayoutConstants.MIN_REPULSION_DIST)\n    {\n      distanceX = IMath.sign(distanceX) *\n              FDLayoutConstants.MIN_REPULSION_DIST;\n    }\n\n    if (Math.abs(distanceY) < FDLayoutConstants.MIN_REPULSION_DIST)\n    {\n      distanceY = IMath.sign(distanceY) *\n              FDLayoutConstants.MIN_REPULSION_DIST;\n    }\n\n    distanceSquared = distanceX * distanceX + distanceY * distanceY;\n    distance = Math.sqrt(distanceSquared);\n\n    repulsionForce = this.repulsionConstant / distanceSquared;\n\n    // Project force onto x and y axes\n    repulsionForceX = repulsionForce * distanceX / distance;\n    repulsionForceY = repulsionForce * distanceY / distance;\n  }\n\n  // Apply forces on the two nodes\n  nodeA.repulsionForceX -= repulsionForceX;\n  nodeA.repulsionForceY -= repulsionForceY;\n  nodeB.repulsionForceX += repulsionForceX;\n  nodeB.repulsionForceY += repulsionForceY;\n};\n\nFDLayout.prototype.calcGravitationalForce = function (node) {\n  var ownerGraph;\n  var ownerCenterX;\n  var ownerCenterY;\n  var distanceX;\n  var distanceY;\n  var absDistanceX;\n  var absDistanceY;\n  var estimatedSize;\n  ownerGraph = node.getOwner();\n\n  ownerCenterX = (ownerGraph.getRight() + ownerGraph.getLeft()) / 2;\n  ownerCenterY = (ownerGraph.getTop() + ownerGraph.getBottom()) / 2;\n  distanceX = node.getCenterX() - ownerCenterX;\n  distanceY = node.getCenterY() - ownerCenterY;\n  absDistanceX = Math.abs(distanceX);\n  absDistanceY = Math.abs(distanceY);\n\n  if (node.getOwner() == this.graphManager.getRoot())// in the root graph\n  {\n    Math.floor(80);\n    estimatedSize = Math.floor(ownerGraph.getEstimatedSize() *\n            this.gravityRangeFactor);\n\n    if (absDistanceX > estimatedSize || absDistanceY > estimatedSize)\n    {\n      node.gravitationForceX = -this.gravityConstant * distanceX;\n      node.gravitationForceY = -this.gravityConstant * distanceY;\n    }\n  }\n  else// inside a compound\n  {\n    estimatedSize = Math.floor((ownerGraph.getEstimatedSize() *\n            this.compoundGravityRangeFactor));\n\n    if (absDistanceX > estimatedSize || absDistanceY > estimatedSize)\n    {\n      node.gravitationForceX = -this.gravityConstant * distanceX *\n              this.compoundGravityConstant;\n      node.gravitationForceY = -this.gravityConstant * distanceY *\n              this.compoundGravityConstant;\n    }\n  }\n};\n\nFDLayout.prototype.isConverged = function () {\n  var converged;\n  var oscilating = false;\n\n  if (this.totalIterations > this.maxIterations / 3)\n  {\n    oscilating =\n            Math.abs(this.totalDisplacement - this.oldTotalDisplacement) < 2;\n  }\n\n  converged = this.totalDisplacement < this.totalDisplacementThreshold;\n\n  this.oldTotalDisplacement = this.totalDisplacement;\n\n  return converged || oscilating;\n};\n\nFDLayout.prototype.animate = function () {\n  if (this.animationDuringLayout && !this.isSubLayout)\n  {\n    if (this.notAnimatedIterations == this.animationPeriod)\n    {\n      this.update();\n      this.notAnimatedIterations = 0;\n    }\n    else\n    {\n      this.notAnimatedIterations++;\n    }\n  }\n};\n\nFDLayout.prototype.calcRepulsionRange = function () {\n  return 0.0;\n};\n\nmodule.exports = FDLayout;\n","var LayoutConstants = require('./LayoutConstants');\n\nfunction FDLayoutConstants() {\n}\n\n//FDLayoutConstants inherits static props in LayoutConstants\nfor (var prop in LayoutConstants) {\n  FDLayoutConstants[prop] = LayoutConstants[prop];\n}\n\nFDLayoutConstants.MAX_ITERATIONS = 2500;\n\nFDLayoutConstants.DEFAULT_EDGE_LENGTH = 50;\nFDLayoutConstants.DEFAULT_SPRING_STRENGTH = 0.45;\nFDLayoutConstants.DEFAULT_REPULSION_STRENGTH = 4500.0;\nFDLayoutConstants.DEFAULT_GRAVITY_STRENGTH = 0.4;\nFDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH = 1.0;\nFDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR = 3.8;\nFDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR = 1.5;\nFDLayoutConstants.DEFAULT_USE_SMART_IDEAL_EDGE_LENGTH_CALCULATION = true;\nFDLayoutConstants.DEFAULT_USE_SMART_REPULSION_RANGE_CALCULATION = true;\nFDLayoutConstants.MAX_NODE_DISPLACEMENT_INCREMENTAL = 100.0;\nFDLayoutConstants.MAX_NODE_DISPLACEMENT = FDLayoutConstants.MAX_NODE_DISPLACEMENT_INCREMENTAL * 3;\nFDLayoutConstants.MIN_REPULSION_DIST = FDLayoutConstants.DEFAULT_EDGE_LENGTH / 10.0;\nFDLayoutConstants.CONVERGENCE_CHECK_PERIOD = 100;\nFDLayoutConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR = 0.1;\nFDLayoutConstants.MIN_EDGE_LENGTH = 1;\nFDLayoutConstants.GRID_CALCULATION_CHECK_PERIOD = 10;\n\nmodule.exports = FDLayoutConstants;\n","var LEdge = require('./LEdge');\nvar FDLayoutConstants = require('./FDLayoutConstants');\n\nfunction FDLayoutEdge(source, target, vEdge) {\n  LEdge.call(this, source, target, vEdge);\n  this.idealLength = FDLayoutConstants.DEFAULT_EDGE_LENGTH;\n}\n\nFDLayoutEdge.prototype = Object.create(LEdge.prototype);\n\nfor (var prop in LEdge) {\n  FDLayoutEdge[prop] = LEdge[prop];\n}\n\nmodule.exports = FDLayoutEdge;\n","var LNode = require('./LNode');\n\nfunction FDLayoutNode(gm, loc, size, vNode) {\n  // alternative constructor is handled inside LNode\n  LNode.call(this, gm, loc, size, vNode);\n  //Spring, repulsion and gravitational forces acting on this node\n  this.springForceX = 0;\n  this.springForceY = 0;\n  this.repulsionForceX = 0;\n  this.repulsionForceY = 0;\n  this.gravitationForceX = 0;\n  this.gravitationForceY = 0;\n  //Amount by which this node is to be moved in this iteration\n  this.displacementX = 0;\n  this.displacementY = 0;\n\n  //Start and finish grid coordinates that this node is fallen into\n  this.startX = 0;\n  this.finishX = 0;\n  this.startY = 0;\n  this.finishY = 0;\n\n  //Geometric neighbors of this node\n  this.surrounding = [];\n}\n\nFDLayoutNode.prototype = Object.create(LNode.prototype);\n\nfor (var prop in LNode) {\n  FDLayoutNode[prop] = LNode[prop];\n}\n\nFDLayoutNode.prototype.setGridCoordinates = function (_startX, _finishX, _startY, _finishY)\n{\n  this.startX = _startX;\n  this.finishX = _finishX;\n  this.startY = _startY;\n  this.finishY = _finishY;\n\n};\n\nmodule.exports = FDLayoutNode;\n","var UniqueIDGeneretor = require('./UniqueIDGeneretor');\n\nfunction HashMap() {\n  this.map = {};\n  this.keys = [];\n}\n\nHashMap.prototype.put = function (key, value) {\n  var theId = UniqueIDGeneretor.createID(key);\n  if (!this.contains(theId)) {\n    this.map[theId] = value;\n    this.keys.push(key);\n  }\n};\n\nHashMap.prototype.contains = function (key) {\n  var theId = UniqueIDGeneretor.createID(key);\n  return this.map[key] != null;\n};\n\nHashMap.prototype.get = function (key) {\n  var theId = UniqueIDGeneretor.createID(key);\n  return this.map[theId];\n};\n\nHashMap.prototype.keySet = function () {\n  return this.keys;\n};\n\nmodule.exports = HashMap;\n","var UniqueIDGeneretor = require('./UniqueIDGeneretor');\n\nfunction HashSet() {\n  this.set = {};\n}\n;\n\nHashSet.prototype.add = function (obj) {\n  var theId = UniqueIDGeneretor.createID(obj);\n  if (!this.contains(theId))\n    this.set[theId] = obj;\n};\n\nHashSet.prototype.remove = function (obj) {\n  delete this.set[UniqueIDGeneretor.createID(obj)];\n};\n\nHashSet.prototype.clear = function () {\n  this.set = {};\n};\n\nHashSet.prototype.contains = function (obj) {\n  return this.set[UniqueIDGeneretor.createID(obj)] == obj;\n};\n\nHashSet.prototype.isEmpty = function () {\n  return this.size() === 0;\n};\n\nHashSet.prototype.size = function () {\n  return Object.keys(this.set).length;\n};\n\n//concats this.set to the given list\nHashSet.prototype.addAllTo = function (list) {\n  var keys = Object.keys(this.set);\n  var length = keys.length;\n  for (var i = 0; i < length; i++) {\n    list.push(this.set[keys[i]]);\n  }\n};\n\nHashSet.prototype.size = function () {\n  return Object.keys(this.set).length;\n};\n\nHashSet.prototype.addAll = function (list) {\n  var s = list.length;\n  for (var i = 0; i < s; i++) {\n    var v = list[i];\n    this.add(v);\n  }\n};\n\nmodule.exports = HashSet;\n","function IGeometry() {\n}\n\nIGeometry.calcSeparationAmount = function (rectA, rectB, overlapAmount, separationBuffer)\n{\n  if (!rectA.intersects(rectB)) {\n    throw \"assert failed\";\n  }\n  var directions = new Array(2);\n  IGeometry.decideDirectionsForOverlappingNodes(rectA, rectB, directions);\n  overlapAmount[0] = Math.min(rectA.getRight(), rectB.getRight()) -\n          Math.max(rectA.x, rectB.x);\n  overlapAmount[1] = Math.min(rectA.getBottom(), rectB.getBottom()) -\n          Math.max(rectA.y, rectB.y);\n  // update the overlapping amounts for the following cases:\n  if ((rectA.getX() <= rectB.getX()) && (rectA.getRight() >= rectB.getRight()))\n  {\n    overlapAmount[0] += Math.min((rectB.getX() - rectA.getX()),\n            (rectA.getRight() - rectB.getRight()));\n  }\n  else if ((rectB.getX() <= rectA.getX()) && (rectB.getRight() >= rectA.getRight()))\n  {\n    overlapAmount[0] += Math.min((rectA.getX() - rectB.getX()),\n            (rectB.getRight() - rectA.getRight()));\n  }\n  if ((rectA.getY() <= rectB.getY()) && (rectA.getBottom() >= rectB.getBottom()))\n  {\n    overlapAmount[1] += Math.min((rectB.getY() - rectA.getY()),\n            (rectA.getBottom() - rectB.getBottom()));\n  }\n  else if ((rectB.getY() <= rectA.getY()) && (rectB.getBottom() >= rectA.getBottom()))\n  {\n    overlapAmount[1] += Math.min((rectA.getY() - rectB.getY()),\n            (rectB.getBottom() - rectA.getBottom()));\n  }\n\n  // find slope of the line passes two centers\n  var slope = Math.abs((rectB.getCenterY() - rectA.getCenterY()) /\n          (rectB.getCenterX() - rectA.getCenterX()));\n  // if centers are overlapped\n  if ((rectB.getCenterY() == rectA.getCenterY()) &&\n          (rectB.getCenterX() == rectA.getCenterX()))\n  {\n    // assume the slope is 1 (45 degree)\n    slope = 1.0;\n  }\n\n  var moveByY = slope * overlapAmount[0];\n  var moveByX = overlapAmount[1] / slope;\n  if (overlapAmount[0] < moveByX)\n  {\n    moveByX = overlapAmount[0];\n  }\n  else\n  {\n    moveByY = overlapAmount[1];\n  }\n  // return half the amount so that if each rectangle is moved by these\n  // amounts in opposite directions, overlap will be resolved\n  overlapAmount[0] = -1 * directions[0] * ((moveByX / 2) + separationBuffer);\n  overlapAmount[1] = -1 * directions[1] * ((moveByY / 2) + separationBuffer);\n}\n\nIGeometry.decideDirectionsForOverlappingNodes = function (rectA, rectB, directions)\n{\n  if (rectA.getCenterX() < rectB.getCenterX())\n  {\n    directions[0] = -1;\n  }\n  else\n  {\n    directions[0] = 1;\n  }\n\n  if (rectA.getCenterY() < rectB.getCenterY())\n  {\n    directions[1] = -1;\n  }\n  else\n  {\n    directions[1] = 1;\n  }\n}\n\nIGeometry.getIntersection2 = function (rectA, rectB, result)\n{\n  //result[0-1] will contain clipPoint of rectA, result[2-3] will contain clipPoint of rectB\n  var p1x = rectA.getCenterX();\n  var p1y = rectA.getCenterY();\n  var p2x = rectB.getCenterX();\n  var p2y = rectB.getCenterY();\n\n  //if two rectangles intersect, then clipping points are centers\n  if (rectA.intersects(rectB))\n  {\n    result[0] = p1x;\n    result[1] = p1y;\n    result[2] = p2x;\n    result[3] = p2y;\n    return true;\n  }\n  //variables for rectA\n  var topLeftAx = rectA.getX();\n  var topLeftAy = rectA.getY();\n  var topRightAx = rectA.getRight();\n  var bottomLeftAx = rectA.getX();\n  var bottomLeftAy = rectA.getBottom();\n  var bottomRightAx = rectA.getRight();\n  var halfWidthA = rectA.getWidthHalf();\n  var halfHeightA = rectA.getHeightHalf();\n  //variables for rectB\n  var topLeftBx = rectB.getX();\n  var topLeftBy = rectB.getY();\n  var topRightBx = rectB.getRight();\n  var bottomLeftBx = rectB.getX();\n  var bottomLeftBy = rectB.getBottom();\n  var bottomRightBx = rectB.getRight();\n  var halfWidthB = rectB.getWidthHalf();\n  var halfHeightB = rectB.getHeightHalf();\n  //flag whether clipping points are found\n  var clipPointAFound = false;\n  var clipPointBFound = false;\n\n  // line is vertical\n  if (p1x == p2x)\n  {\n    if (p1y > p2y)\n    {\n      result[0] = p1x;\n      result[1] = topLeftAy;\n      result[2] = p2x;\n      result[3] = bottomLeftBy;\n      return false;\n    }\n    else if (p1y < p2y)\n    {\n      result[0] = p1x;\n      result[1] = bottomLeftAy;\n      result[2] = p2x;\n      result[3] = topLeftBy;\n      return false;\n    }\n    else\n    {\n      //not line, return null;\n    }\n  }\n  // line is horizontal\n  else if (p1y == p2y)\n  {\n    if (p1x > p2x)\n    {\n      result[0] = topLeftAx;\n      result[1] = p1y;\n      result[2] = topRightBx;\n      result[3] = p2y;\n      return false;\n    }\n    else if (p1x < p2x)\n    {\n      result[0] = topRightAx;\n      result[1] = p1y;\n      result[2] = topLeftBx;\n      result[3] = p2y;\n      return false;\n    }\n    else\n    {\n      //not valid line, return null;\n    }\n  }\n  else\n  {\n    //slopes of rectA's and rectB's diagonals\n    var slopeA = rectA.height / rectA.width;\n    var slopeB = rectB.height / rectB.width;\n\n    //slope of line between center of rectA and center of rectB\n    var slopePrime = (p2y - p1y) / (p2x - p1x);\n    var cardinalDirectionA;\n    var cardinalDirectionB;\n    var tempPointAx;\n    var tempPointAy;\n    var tempPointBx;\n    var tempPointBy;\n\n    //determine whether clipping point is the corner of nodeA\n    if ((-slopeA) == slopePrime)\n    {\n      if (p1x > p2x)\n      {\n        result[0] = bottomLeftAx;\n        result[1] = bottomLeftAy;\n        clipPointAFound = true;\n      }\n      else\n      {\n        result[0] = topRightAx;\n        result[1] = topLeftAy;\n        clipPointAFound = true;\n      }\n    }\n    else if (slopeA == slopePrime)\n    {\n      if (p1x > p2x)\n      {\n        result[0] = topLeftAx;\n        result[1] = topLeftAy;\n        clipPointAFound = true;\n      }\n      else\n      {\n        result[0] = bottomRightAx;\n        result[1] = bottomLeftAy;\n        clipPointAFound = true;\n      }\n    }\n\n    //determine whether clipping point is the corner of nodeB\n    if ((-slopeB) == slopePrime)\n    {\n      if (p2x > p1x)\n      {\n        result[2] = bottomLeftBx;\n        result[3] = bottomLeftBy;\n        clipPointBFound = true;\n      }\n      else\n      {\n        result[2] = topRightBx;\n        result[3] = topLeftBy;\n        clipPointBFound = true;\n      }\n    }\n    else if (slopeB == slopePrime)\n    {\n      if (p2x > p1x)\n      {\n        result[2] = topLeftBx;\n        result[3] = topLeftBy;\n        clipPointBFound = true;\n      }\n      else\n      {\n        result[2] = bottomRightBx;\n        result[3] = bottomLeftBy;\n        clipPointBFound = true;\n      }\n    }\n\n    //if both clipping points are corners\n    if (clipPointAFound && clipPointBFound)\n    {\n      return false;\n    }\n\n    //determine Cardinal Direction of rectangles\n    if (p1x > p2x)\n    {\n      if (p1y > p2y)\n      {\n        cardinalDirectionA = IGeometry.getCardinalDirection(slopeA, slopePrime, 4);\n        cardinalDirectionB = IGeometry.getCardinalDirection(slopeB, slopePrime, 2);\n      }\n      else\n      {\n        cardinalDirectionA = IGeometry.getCardinalDirection(-slopeA, slopePrime, 3);\n        cardinalDirectionB = IGeometry.getCardinalDirection(-slopeB, slopePrime, 1);\n      }\n    }\n    else\n    {\n      if (p1y > p2y)\n      {\n        cardinalDirectionA = IGeometry.getCardinalDirection(-slopeA, slopePrime, 1);\n        cardinalDirectionB = IGeometry.getCardinalDirection(-slopeB, slopePrime, 3);\n      }\n      else\n      {\n        cardinalDirectionA = IGeometry.getCardinalDirection(slopeA, slopePrime, 2);\n        cardinalDirectionB = IGeometry.getCardinalDirection(slopeB, slopePrime, 4);\n      }\n    }\n    //calculate clipping Point if it is not found before\n    if (!clipPointAFound)\n    {\n      switch (cardinalDirectionA)\n      {\n        case 1:\n          tempPointAy = topLeftAy;\n          tempPointAx = p1x + (-halfHeightA) / slopePrime;\n          result[0] = tempPointAx;\n          result[1] = tempPointAy;\n          break;\n        case 2:\n          tempPointAx = bottomRightAx;\n          tempPointAy = p1y + halfWidthA * slopePrime;\n          result[0] = tempPointAx;\n          result[1] = tempPointAy;\n          break;\n        case 3:\n          tempPointAy = bottomLeftAy;\n          tempPointAx = p1x + halfHeightA / slopePrime;\n          result[0] = tempPointAx;\n          result[1] = tempPointAy;\n          break;\n        case 4:\n          tempPointAx = bottomLeftAx;\n          tempPointAy = p1y + (-halfWidthA) * slopePrime;\n          result[0] = tempPointAx;\n          result[1] = tempPointAy;\n          break;\n      }\n    }\n    if (!clipPointBFound)\n    {\n      switch (cardinalDirectionB)\n      {\n        case 1:\n          tempPointBy = topLeftBy;\n          tempPointBx = p2x + (-halfHeightB) / slopePrime;\n          result[2] = tempPointBx;\n          result[3] = tempPointBy;\n          break;\n        case 2:\n          tempPointBx = bottomRightBx;\n          tempPointBy = p2y + halfWidthB * slopePrime;\n          result[2] = tempPointBx;\n          result[3] = tempPointBy;\n          break;\n        case 3:\n          tempPointBy = bottomLeftBy;\n          tempPointBx = p2x + halfHeightB / slopePrime;\n          result[2] = tempPointBx;\n          result[3] = tempPointBy;\n          break;\n        case 4:\n          tempPointBx = bottomLeftBx;\n          tempPointBy = p2y + (-halfWidthB) * slopePrime;\n          result[2] = tempPointBx;\n          result[3] = tempPointBy;\n          break;\n      }\n    }\n  }\n  return false;\n}\n\nIGeometry.getCardinalDirection = function (slope, slopePrime, line)\n{\n  if (slope > slopePrime)\n  {\n    return line;\n  }\n  else\n  {\n    return 1 + line % 4;\n  }\n}\n\nIGeometry.getIntersection = function (s1, s2, f1, f2)\n{\n  if (f2 == null) {\n    return IGeometry.getIntersection2(s1, s2, f1);\n  }\n  var x1 = s1.x;\n  var y1 = s1.y;\n  var x2 = s2.x;\n  var y2 = s2.y;\n  var x3 = f1.x;\n  var y3 = f1.y;\n  var x4 = f2.x;\n  var y4 = f2.y;\n  var x, y; // intersection point\n  var a1, a2, b1, b2, c1, c2; // coefficients of line eqns.\n  var denom;\n\n  a1 = y2 - y1;\n  b1 = x1 - x2;\n  c1 = x2 * y1 - x1 * y2;  // { a1*x + b1*y + c1 = 0 is line 1 }\n\n  a2 = y4 - y3;\n  b2 = x3 - x4;\n  c2 = x4 * y3 - x3 * y4;  // { a2*x + b2*y + c2 = 0 is line 2 }\n\n  denom = a1 * b2 - a2 * b1;\n\n  if (denom == 0)\n  {\n    return null;\n  }\n\n  x = (b1 * c2 - b2 * c1) / denom;\n  y = (a2 * c1 - a1 * c2) / denom;\n\n  return new Point(x, y);\n}\n\n// -----------------------------------------------------------------------------\n// Section: Class Constants\n// -----------------------------------------------------------------------------\n/**\n * Some useful pre-calculated constants\n */\nIGeometry.HALF_PI = 0.5 * Math.PI;\nIGeometry.ONE_AND_HALF_PI = 1.5 * Math.PI;\nIGeometry.TWO_PI = 2.0 * Math.PI;\nIGeometry.THREE_PI = 3.0 * Math.PI;\n\nmodule.exports = IGeometry;\n","function IMath() {\n}\n\n/**\n * This method returns the sign of the input value.\n */\nIMath.sign = function (value) {\n  if (value > 0)\n  {\n    return 1;\n  }\n  else if (value < 0)\n  {\n    return -1;\n  }\n  else\n  {\n    return 0;\n  }\n}\n\nIMath.floor = function (value) {\n  return value < 0 ? Math.ceil(value) : Math.floor(value);\n}\n\nIMath.ceil = function (value) {\n  return value < 0 ? Math.floor(value) : Math.ceil(value);\n}\n\nmodule.exports = IMath;\n","function Integer() {\n}\n\nInteger.MAX_VALUE = 2147483647;\nInteger.MIN_VALUE = -2147483648;\n\nmodule.exports = Integer;\n","var LGraphObject = require('./LGraphObject');\nvar IGeometry = require('./IGeometry');\nvar IMath = require('./IMath');\n\nfunction LEdge(source, target, vEdge) {\n  LGraphObject.call(this, vEdge);\n\n  this.isOverlapingSourceAndTarget = false;\n  this.vGraphObject = vEdge;\n  this.bendpoints = [];\n  this.source = source;\n  this.target = target;\n}\n\nLEdge.prototype = Object.create(LGraphObject.prototype);\n\nfor (var prop in LGraphObject) {\n  LEdge[prop] = LGraphObject[prop];\n}\n\nLEdge.prototype.getSource = function ()\n{\n  return this.source;\n};\n\nLEdge.prototype.getTarget = function ()\n{\n  return this.target;\n};\n\nLEdge.prototype.isInterGraph = function ()\n{\n  return this.isInterGraph;\n};\n\nLEdge.prototype.getLength = function ()\n{\n  return this.length;\n};\n\nLEdge.prototype.isOverlapingSourceAndTarget = function ()\n{\n  return this.isOverlapingSourceAndTarget;\n};\n\nLEdge.prototype.getBendpoints = function ()\n{\n  return this.bendpoints;\n};\n\nLEdge.prototype.getLca = function ()\n{\n  return this.lca;\n};\n\nLEdge.prototype.getSourceInLca = function ()\n{\n  return this.sourceInLca;\n};\n\nLEdge.prototype.getTargetInLca = function ()\n{\n  return this.targetInLca;\n};\n\nLEdge.prototype.getOtherEnd = function (node)\n{\n  if (this.source === node)\n  {\n    return this.target;\n  }\n  else if (this.target === node)\n  {\n    return this.source;\n  }\n  else\n  {\n    throw \"Node is not incident with this edge\";\n  }\n}\n\nLEdge.prototype.getOtherEndInGraph = function (node, graph)\n{\n  var otherEnd = this.getOtherEnd(node);\n  var root = graph.getGraphManager().getRoot();\n\n  while (true)\n  {\n    if (otherEnd.getOwner() == graph)\n    {\n      return otherEnd;\n    }\n\n    if (otherEnd.getOwner() == root)\n    {\n      break;\n    }\n\n    otherEnd = otherEnd.getOwner().getParent();\n  }\n\n  return null;\n};\n\nLEdge.prototype.updateLength = function ()\n{\n  var clipPointCoordinates = new Array(4);\n\n  this.isOverlapingSourceAndTarget =\n          IGeometry.getIntersection(this.target.getRect(),\n                  this.source.getRect(),\n                  clipPointCoordinates);\n\n  if (!this.isOverlapingSourceAndTarget)\n  {\n    this.lengthX = clipPointCoordinates[0] - clipPointCoordinates[2];\n    this.lengthY = clipPointCoordinates[1] - clipPointCoordinates[3];\n\n    if (Math.abs(this.lengthX) < 1.0)\n    {\n      this.lengthX = IMath.sign(this.lengthX);\n    }\n\n    if (Math.abs(this.lengthY) < 1.0)\n    {\n      this.lengthY = IMath.sign(this.lengthY);\n    }\n\n    this.length = Math.sqrt(\n            this.lengthX * this.lengthX + this.lengthY * this.lengthY);\n  }\n};\n\nLEdge.prototype.updateLengthSimple = function ()\n{\n  this.lengthX = this.target.getCenterX() - this.source.getCenterX();\n  this.lengthY = this.target.getCenterY() - this.source.getCenterY();\n\n  if (Math.abs(this.lengthX) < 1.0)\n  {\n    this.lengthX = IMath.sign(this.lengthX);\n  }\n\n  if (Math.abs(this.lengthY) < 1.0)\n  {\n    this.lengthY = IMath.sign(this.lengthY);\n  }\n\n  this.length = Math.sqrt(\n          this.lengthX * this.lengthX + this.lengthY * this.lengthY);\n}\n\nmodule.exports = LEdge;\n","var LGraphObject = require('./LGraphObject');\nvar Integer = require('./Integer');\nvar LayoutConstants = require('./LayoutConstants');\nvar LGraphManager = require('./LGraphManager');\nvar LNode = require('./LNode');\nvar HashSet = require('./HashSet');\nvar RectangleD = require('./RectangleD');\nvar Point = require('./Point');\n\nfunction LGraph(parent, obj2, vGraph) {\n  LGraphObject.call(this, vGraph);\n  this.estimatedSize = Integer.MIN_VALUE;\n  this.margin = LayoutConstants.DEFAULT_GRAPH_MARGIN;\n  this.edges = [];\n  this.nodes = [];\n  this.isConnected = false;\n  this.parent = parent;\n\n  if (obj2 != null && obj2 instanceof LGraphManager) {\n    this.graphManager = obj2;\n  }\n  else if (obj2 != null && obj2 instanceof Layout) {\n    this.graphManager = obj2.graphManager;\n  }\n}\n\nLGraph.prototype = Object.create(LGraphObject.prototype);\nfor (var prop in LGraphObject) {\n  LGraph[prop] = LGraphObject[prop];\n}\n\nLGraph.prototype.getNodes = function () {\n  return this.nodes;\n};\n\nLGraph.prototype.getEdges = function () {\n  return this.edges;\n};\n\nLGraph.prototype.getGraphManager = function ()\n{\n  return this.graphManager;\n};\n\nLGraph.prototype.getParent = function ()\n{\n  return this.parent;\n};\n\nLGraph.prototype.getLeft = function ()\n{\n  return this.left;\n};\n\nLGraph.prototype.getRight = function ()\n{\n  return this.right;\n};\n\nLGraph.prototype.getTop = function ()\n{\n  return this.top;\n};\n\nLGraph.prototype.getBottom = function ()\n{\n  return this.bottom;\n};\n\nLGraph.prototype.isConnected = function ()\n{\n  return this.isConnected;\n};\n\nLGraph.prototype.add = function (obj1, sourceNode, targetNode) {\n  if (sourceNode == null && targetNode == null) {\n    var newNode = obj1;\n    if (this.graphManager == null) {\n      throw \"Graph has no graph mgr!\";\n    }\n    if (this.getNodes().indexOf(newNode) > -1) {\n      throw \"Node already in graph!\";\n    }\n    newNode.owner = this;\n    this.getNodes().push(newNode);\n\n    return newNode;\n  }\n  else {\n    var newEdge = obj1;\n    if (!(this.getNodes().indexOf(sourceNode) > -1 && (this.getNodes().indexOf(targetNode)) > -1)) {\n      throw \"Source or target not in graph!\";\n    }\n\n    if (!(sourceNode.owner == targetNode.owner && sourceNode.owner == this)) {\n      throw \"Both owners must be this graph!\";\n    }\n\n    if (sourceNode.owner != targetNode.owner)\n    {\n      return null;\n    }\n\n    // set source and target\n    newEdge.source = sourceNode;\n    newEdge.target = targetNode;\n\n    // set as intra-graph edge\n    newEdge.isInterGraph = false;\n\n    // add to graph edge list\n    this.getEdges().push(newEdge);\n\n    // add to incidency lists\n    sourceNode.edges.push(newEdge);\n\n    if (targetNode != sourceNode)\n    {\n      targetNode.edges.push(newEdge);\n    }\n\n    return newEdge;\n  }\n};\n\nLGraph.prototype.remove = function (obj) {\n  var node = obj;\n  if (obj instanceof LNode) {\n    if (node == null) {\n      throw \"Node is null!\";\n    }\n    if (!(node.owner != null && node.owner == this)) {\n      throw \"Owner graph is invalid!\";\n    }\n    if (this.graphManager == null) {\n      throw \"Owner graph manager is invalid!\";\n    }\n    // remove incident edges first (make a copy to do it safely)\n    var edgesToBeRemoved = node.edges.slice();\n    var edge;\n    var s = edgesToBeRemoved.length;\n    for (var i = 0; i < s; i++)\n    {\n      edge = edgesToBeRemoved[i];\n\n      if (edge.isInterGraph)\n      {\n        this.graphManager.remove(edge);\n      }\n      else\n      {\n        edge.source.owner.remove(edge);\n      }\n    }\n\n    // now the node itself\n    var index = this.nodes.indexOf(node);\n    if (index == -1) {\n      throw \"Node not in owner node list!\";\n    }\n\n    this.nodes.splice(index, 1);\n  }\n  else if (obj instanceof LEdge) {\n    var edge = obj;\n    if (edge == null) {\n      throw \"Edge is null!\";\n    }\n    if (!(edge.source != null && edge.target != null)) {\n      throw \"Source and/or target is null!\";\n    }\n    if (!(edge.source.owner != null && edge.target.owner != null &&\n            edge.source.owner == this && edge.target.owner == this)) {\n      throw \"Source and/or target owner is invalid!\";\n    }\n\n    var sourceIndex = edge.source.edges.indexOf(edge);\n    var targetIndex = edge.target.edges.indexOf(edge);\n    if (!(sourceIndex > -1 && targetIndex > -1)) {\n      throw \"Source and/or target doesn't know this edge!\";\n    }\n\n    edge.source.edges.splice(sourceIndex, 1);\n\n    if (edge.target != edge.source)\n    {\n      edge.target.edges.splice(targetIndex, 1);\n    }\n\n    var index = edge.source.owner.getEdges().indexOf(edge);\n    if (index == -1) {\n      throw \"Not in owner's edge list!\";\n    }\n\n    edge.source.owner.getEdges().splice(index, 1);\n  }\n};\n\nLGraph.prototype.updateLeftTop = function ()\n{\n  var top = Integer.MAX_VALUE;\n  var left = Integer.MAX_VALUE;\n  var nodeTop;\n  var nodeLeft;\n\n  var nodes = this.getNodes();\n  var s = nodes.length;\n\n  for (var i = 0; i < s; i++)\n  {\n    var lNode = nodes[i];\n    nodeTop = Math.floor(lNode.getTop());\n    nodeLeft = Math.floor(lNode.getLeft());\n\n    if (top > nodeTop)\n    {\n      top = nodeTop;\n    }\n\n    if (left > nodeLeft)\n    {\n      left = nodeLeft;\n    }\n  }\n\n  // Do we have any nodes in this graph?\n  if (top == Integer.MAX_VALUE)\n  {\n    return null;\n  }\n\n  this.left = left - this.margin;\n  this.top = top - this.margin;\n\n  // Apply the margins and return the result\n  return new Point(this.left, this.top);\n};\n\nLGraph.prototype.updateBounds = function (recursive)\n{\n  // calculate bounds\n  var left = Integer.MAX_VALUE;\n  var right = -Integer.MAX_VALUE;\n  var top = Integer.MAX_VALUE;\n  var bottom = -Integer.MAX_VALUE;\n  var nodeLeft;\n  var nodeRight;\n  var nodeTop;\n  var nodeBottom;\n\n  var nodes = this.nodes;\n  var s = nodes.length;\n  for (var i = 0; i < s; i++)\n  {\n    var lNode = nodes[i];\n\n    if (recursive && lNode.child != null)\n    {\n      lNode.updateBounds();\n    }\n    nodeLeft = Math.floor(lNode.getLeft());\n    nodeRight = Math.floor(lNode.getRight());\n    nodeTop = Math.floor(lNode.getTop());\n    nodeBottom = Math.floor(lNode.getBottom());\n\n    if (left > nodeLeft)\n    {\n      left = nodeLeft;\n    }\n\n    if (right < nodeRight)\n    {\n      right = nodeRight;\n    }\n\n    if (top > nodeTop)\n    {\n      top = nodeTop;\n    }\n\n    if (bottom < nodeBottom)\n    {\n      bottom = nodeBottom;\n    }\n  }\n\n  var boundingRect = new RectangleD(left, top, right - left, bottom - top);\n  if (left == Integer.MAX_VALUE)\n  {\n    this.left = Math.floor(this.parent.getLeft());\n    this.right = Math.floor(this.parent.getRight());\n    this.top = Math.floor(this.parent.getTop());\n    this.bottom = Math.floor(this.parent.getBottom());\n  }\n\n  this.left = boundingRect.x - this.margin;\n  this.right = boundingRect.x + boundingRect.width + this.margin;\n  this.top = boundingRect.y - this.margin;\n  this.bottom = boundingRect.y + boundingRect.height + this.margin;\n};\n\nLGraph.calculateBounds = function (nodes)\n{\n  var left = Integer.MAX_VALUE;\n  var right = -Integer.MAX_VALUE;\n  var top = Integer.MAX_VALUE;\n  var bottom = -Integer.MAX_VALUE;\n  var nodeLeft;\n  var nodeRight;\n  var nodeTop;\n  var nodeBottom;\n\n  var s = nodes.length;\n\n  for (var i = 0; i < s; i++)\n  {\n    var lNode = nodes[i];\n    nodeLeft = Math.floor(lNode.getLeft());\n    nodeRight = Math.floor(lNode.getRight());\n    nodeTop = Math.floor(lNode.getTop());\n    nodeBottom = Math.floor(lNode.getBottom());\n\n    if (left > nodeLeft)\n    {\n      left = nodeLeft;\n    }\n\n    if (right < nodeRight)\n    {\n      right = nodeRight;\n    }\n\n    if (top > nodeTop)\n    {\n      top = nodeTop;\n    }\n\n    if (bottom < nodeBottom)\n    {\n      bottom = nodeBottom;\n    }\n  }\n\n  var boundingRect = new RectangleD(left, top, right - left, bottom - top);\n\n  return boundingRect;\n};\n\nLGraph.prototype.getInclusionTreeDepth = function ()\n{\n  if (this == this.graphManager.getRoot())\n  {\n    return 1;\n  }\n  else\n  {\n    return this.parent.getInclusionTreeDepth();\n  }\n};\n\nLGraph.prototype.getEstimatedSize = function ()\n{\n  if (this.estimatedSize == Integer.MIN_VALUE) {\n    throw \"assert failed\";\n  }\n  return this.estimatedSize;\n};\n\nLGraph.prototype.calcEstimatedSize = function ()\n{\n  var size = 0;\n  var nodes = this.nodes;\n  var s = nodes.length;\n\n  for (var i = 0; i < s; i++)\n  {\n    var lNode = nodes[i];\n    size += lNode.calcEstimatedSize();\n  }\n\n  if (size == 0)\n  {\n    this.estimatedSize = LayoutConstants.EMPTY_COMPOUND_NODE_SIZE;\n  }\n  else\n  {\n    this.estimatedSize = Math.floor(size / Math.sqrt(this.nodes.length));\n  }\n\n  return Math.floor(this.estimatedSize);\n};\n\nLGraph.prototype.updateConnected = function ()\n{\n  if (this.nodes.length == 0)\n  {\n    this.isConnected = true;\n    return;\n  }\n\n  var toBeVisited = [];\n  var visited = new HashSet();\n  var currentNode = this.nodes[0];\n  var neighborEdges;\n  var currentNeighbor;\n  toBeVisited = toBeVisited.concat(currentNode.withChildren());\n\n  while (toBeVisited.length > 0)\n  {\n    currentNode = toBeVisited.shift();\n    visited.add(currentNode);\n\n    // Traverse all neighbors of this node\n    neighborEdges = currentNode.getEdges();\n    var s = neighborEdges.length;\n    for (var i = 0; i < s; i++)\n    {\n      var neighborEdge = neighborEdges[i];\n      currentNeighbor =\n              neighborEdge.getOtherEndInGraph(currentNode, this);\n\n      // Add unvisited neighbors to the list to visit\n      if (currentNeighbor != null &&\n              !visited.contains(currentNeighbor))\n      {\n        toBeVisited = toBeVisited.concat(currentNeighbor.withChildren());\n      }\n    }\n  }\n\n  this.isConnected = false;\n\n  if (visited.size() >= this.nodes.length)\n  {\n    var noOfVisitedInThisGraph = 0;\n\n    var s = visited.size();\n    for (var visitedId in visited.set)\n    {\n      var visitedNode = visited.set[visitedId];\n      if (visitedNode.owner == this)\n      {\n        noOfVisitedInThisGraph++;\n      }\n    }\n\n    if (noOfVisitedInThisGraph == this.nodes.length)\n    {\n      this.isConnected = true;\n    }\n  }\n};\n\nmodule.exports = LGraph;\n","function LGraphManager(layout) {\n  this.layout = layout;\n\n  this.graphs = [];\n  this.edges = [];\n}\n\nLGraphManager.prototype.addRoot = function ()\n{\n  var ngraph = this.layout.newGraph();\n  var nnode = this.layout.newNode(null);\n  var root = this.add(ngraph, nnode);\n  this.setRootGraph(root);\n  return this.rootGraph;\n};\n\nLGraphManager.prototype.add = function (newGraph, parentNode, newEdge, sourceNode, targetNode)\n{\n  //there are just 2 parameters are passed then it adds an LGraph else it adds an LEdge\n  if (newEdge == null && sourceNode == null && targetNode == null) {\n    if (newGraph == null) {\n      throw \"Graph is null!\";\n    }\n    if (parentNode == null) {\n      throw \"Parent node is null!\";\n    }\n    if (this.graphs.indexOf(newGraph) > -1) {\n      throw \"Graph already in this graph mgr!\";\n    }\n\n    this.graphs.push(newGraph);\n\n    if (newGraph.parent != null) {\n      throw \"Already has a parent!\";\n    }\n    if (parentNode.child != null) {\n      throw  \"Already has a child!\";\n    }\n\n    newGraph.parent = parentNode;\n    parentNode.child = newGraph;\n\n    return newGraph;\n  }\n  else {\n    //change the order of the parameters\n    targetNode = newEdge;\n    sourceNode = parentNode;\n    newEdge = newGraph;\n    var sourceGraph = sourceNode.getOwner();\n    var targetGraph = targetNode.getOwner();\n\n    if (!(sourceGraph != null && sourceGraph.getGraphManager() == this)) {\n      throw \"Source not in this graph mgr!\";\n    }\n    if (!(targetGraph != null && targetGraph.getGraphManager() == this)) {\n      throw \"Target not in this graph mgr!\";\n    }\n\n    if (sourceGraph == targetGraph)\n    {\n      newEdge.isInterGraph = false;\n      return sourceGraph.add(newEdge, sourceNode, targetNode);\n    }\n    else\n    {\n      newEdge.isInterGraph = true;\n\n      // set source and target\n      newEdge.source = sourceNode;\n      newEdge.target = targetNode;\n\n      // add edge to inter-graph edge list\n      if (this.edges.indexOf(newEdge) > -1) {\n        throw \"Edge already in inter-graph edge list!\";\n      }\n\n      this.edges.push(newEdge);\n\n      // add edge to source and target incidency lists\n      if (!(newEdge.source != null && newEdge.target != null)) {\n        throw \"Edge source and/or target is null!\";\n      }\n\n      if (!(newEdge.source.edges.indexOf(newEdge) == -1 && newEdge.target.edges.indexOf(newEdge) == -1)) {\n        throw \"Edge already in source and/or target incidency list!\";\n      }\n\n      newEdge.source.edges.push(newEdge);\n      newEdge.target.edges.push(newEdge);\n\n      return newEdge;\n    }\n  }\n};\n\nLGraphManager.prototype.remove = function (lObj) {\n  if (lObj instanceof LGraph) {\n    var graph = lObj;\n    if (graph.getGraphManager() != this) {\n      throw \"Graph not in this graph mgr\";\n    }\n    if (!(graph == this.rootGraph || (graph.parent != null && graph.parent.graphManager == this))) {\n      throw \"Invalid parent node!\";\n    }\n\n    // first the edges (make a copy to do it safely)\n    var edgesToBeRemoved = [];\n\n    edgesToBeRemoved = edgesToBeRemoved.concat(graph.getEdges());\n\n    var edge;\n    var s = edgesToBeRemoved.length;\n    for (var i = 0; i < s; i++)\n    {\n      edge = edgesToBeRemoved[i];\n      graph.remove(edge);\n    }\n\n    // then the nodes (make a copy to do it safely)\n    var nodesToBeRemoved = [];\n\n    nodesToBeRemoved = nodesToBeRemoved.concat(graph.getNodes());\n\n    var node;\n    s = nodesToBeRemoved.length;\n    for (var i = 0; i < s; i++)\n    {\n      node = nodesToBeRemoved[i];\n      graph.remove(node);\n    }\n\n    // check if graph is the root\n    if (graph == this.rootGraph)\n    {\n      this.setRootGraph(null);\n    }\n\n    // now remove the graph itself\n    var index = this.graphs.indexOf(graph);\n    this.graphs.splice(index, 1);\n\n    // also reset the parent of the graph\n    graph.parent = null;\n  }\n  else if (lObj instanceof LEdge) {\n    edge = lObj;\n    if (edge == null) {\n      throw \"Edge is null!\";\n    }\n    if (!edge.isInterGraph) {\n      throw \"Not an inter-graph edge!\";\n    }\n    if (!(edge.source != null && edge.target != null)) {\n      throw \"Source and/or target is null!\";\n    }\n\n    // remove edge from source and target nodes' incidency lists\n\n    if (!(edge.source.edges.indexOf(edge) != -1 && edge.target.edges.indexOf(edge) != -1)) {\n      throw \"Source and/or target doesn't know this edge!\";\n    }\n\n    var index = edge.source.edges.indexOf(edge);\n    edge.source.edges.splice(index, 1);\n    index = edge.target.edges.indexOf(edge);\n    edge.target.edges.splice(index, 1);\n\n    // remove edge from owner graph manager's inter-graph edge list\n\n    if (!(edge.source.owner != null && edge.source.owner.getGraphManager() != null)) {\n      throw \"Edge owner graph or owner graph manager is null!\";\n    }\n    if (edge.source.owner.getGraphManager().edges.indexOf(edge) == -1) {\n      throw \"Not in owner graph manager's edge list!\";\n    }\n\n    var index = edge.source.owner.getGraphManager().edges.indexOf(edge);\n    edge.source.owner.getGraphManager().edges.splice(index, 1);\n  }\n};\n\nLGraphManager.prototype.updateBounds = function ()\n{\n  this.rootGraph.updateBounds(true);\n};\n\nLGraphManager.prototype.getGraphs = function ()\n{\n  return this.graphs;\n};\n\nLGraphManager.prototype.getAllNodes = function ()\n{\n  if (this.allNodes == null)\n  {\n    var nodeList = [];\n    var graphs = this.getGraphs();\n    var s = graphs.length;\n    for (var i = 0; i < s; i++)\n    {\n      nodeList = nodeList.concat(graphs[i].getNodes());\n    }\n    this.allNodes = nodeList;\n  }\n  return this.allNodes;\n};\n\nLGraphManager.prototype.resetAllNodes = function ()\n{\n  this.allNodes = null;\n};\n\nLGraphManager.prototype.resetAllEdges = function ()\n{\n  this.allEdges = null;\n};\n\nLGraphManager.prototype.resetAllNodesToApplyGravitation = function ()\n{\n  this.allNodesToApplyGravitation = null;\n};\n\nLGraphManager.prototype.getAllEdges = function ()\n{\n  if (this.allEdges == null)\n  {\n    var edgeList = [];\n    var graphs = this.getGraphs();\n    var s = graphs.length;\n    for (var i = 0; i < graphs.length; i++)\n    {\n      edgeList = edgeList.concat(graphs[i].getEdges());\n    }\n\n    edgeList = edgeList.concat(this.edges);\n\n    this.allEdges = edgeList;\n  }\n  return this.allEdges;\n};\n\nLGraphManager.prototype.getAllNodesToApplyGravitation = function ()\n{\n  return this.allNodesToApplyGravitation;\n};\n\nLGraphManager.prototype.setAllNodesToApplyGravitation = function (nodeList)\n{\n  if (this.allNodesToApplyGravitation != null) {\n    throw \"assert failed\";\n  }\n\n  this.allNodesToApplyGravitation = nodeList;\n};\n\nLGraphManager.prototype.getRoot = function ()\n{\n  return this.rootGraph;\n};\n\nLGraphManager.prototype.setRootGraph = function (graph)\n{\n  if (graph.getGraphManager() != this) {\n    throw \"Root not in this graph mgr!\";\n  }\n\n  this.rootGraph = graph;\n  // root graph must have a root node associated with it for convenience\n  if (graph.parent == null)\n  {\n    graph.parent = this.layout.newNode(\"Root node\");\n  }\n};\n\nLGraphManager.prototype.getLayout = function ()\n{\n  return this.layout;\n};\n\nLGraphManager.prototype.isOneAncestorOfOther = function (firstNode, secondNode)\n{\n  if (!(firstNode != null && secondNode != null)) {\n    throw \"assert failed\";\n  }\n\n  if (firstNode == secondNode)\n  {\n    return true;\n  }\n  // Is second node an ancestor of the first one?\n  var ownerGraph = firstNode.getOwner();\n  var parentNode;\n\n  do\n  {\n    parentNode = ownerGraph.getParent();\n\n    if (parentNode == null)\n    {\n      break;\n    }\n\n    if (parentNode == secondNode)\n    {\n      return true;\n    }\n\n    ownerGraph = parentNode.getOwner();\n    if (ownerGraph == null)\n    {\n      break;\n    }\n  } while (true);\n  // Is first node an ancestor of the second one?\n  ownerGraph = secondNode.getOwner();\n\n  do\n  {\n    parentNode = ownerGraph.getParent();\n\n    if (parentNode == null)\n    {\n      break;\n    }\n\n    if (parentNode == firstNode)\n    {\n      return true;\n    }\n\n    ownerGraph = parentNode.getOwner();\n    if (ownerGraph == null)\n    {\n      break;\n    }\n  } while (true);\n\n  return false;\n};\n\nLGraphManager.prototype.calcLowestCommonAncestors = function ()\n{\n  var edge;\n  var sourceNode;\n  var targetNode;\n  var sourceAncestorGraph;\n  var targetAncestorGraph;\n\n  var edges = this.getAllEdges();\n  var s = edges.length;\n  for (var i = 0; i < s; i++)\n  {\n    edge = edges[i];\n\n    sourceNode = edge.source;\n    targetNode = edge.target;\n    edge.lca = null;\n    edge.sourceInLca = sourceNode;\n    edge.targetInLca = targetNode;\n\n    if (sourceNode == targetNode)\n    {\n      edge.lca = sourceNode.getOwner();\n      continue;\n    }\n\n    sourceAncestorGraph = sourceNode.getOwner();\n\n    while (edge.lca == null)\n    {\n      targetAncestorGraph = targetNode.getOwner();\n\n      while (edge.lca == null)\n      {\n        if (targetAncestorGraph == sourceAncestorGraph)\n        {\n          edge.lca = targetAncestorGraph;\n          break;\n        }\n\n        if (targetAncestorGraph == this.rootGraph)\n        {\n          break;\n        }\n\n        if (edge.lca != null) {\n          throw \"assert failed\";\n        }\n        edge.targetInLca = targetAncestorGraph.getParent();\n        targetAncestorGraph = edge.targetInLca.getOwner();\n      }\n\n      if (sourceAncestorGraph == this.rootGraph)\n      {\n        break;\n      }\n\n      if (edge.lca == null)\n      {\n        edge.sourceInLca = sourceAncestorGraph.getParent();\n        sourceAncestorGraph = edge.sourceInLca.getOwner();\n      }\n    }\n\n    if (edge.lca == null) {\n      throw \"assert failed\";\n    }\n  }\n};\n\nLGraphManager.prototype.calcLowestCommonAncestor = function (firstNode, secondNode)\n{\n  if (firstNode == secondNode)\n  {\n    return firstNode.getOwner();\n  }\n  var firstOwnerGraph = firstNode.getOwner();\n\n  do\n  {\n    if (firstOwnerGraph == null)\n    {\n      break;\n    }\n    var secondOwnerGraph = secondNode.getOwner();\n\n    do\n    {\n      if (secondOwnerGraph == null)\n      {\n        break;\n      }\n\n      if (secondOwnerGraph == firstOwnerGraph)\n      {\n        return secondOwnerGraph;\n      }\n      secondOwnerGraph = secondOwnerGraph.getParent().getOwner();\n    } while (true);\n\n    firstOwnerGraph = firstOwnerGraph.getParent().getOwner();\n  } while (true);\n\n  return firstOwnerGraph;\n};\n\nLGraphManager.prototype.calcInclusionTreeDepths = function (graph, depth) {\n  if (graph == null && depth == null) {\n    graph = this.rootGraph;\n    depth = 1;\n  }\n  var node;\n\n  var nodes = graph.getNodes();\n  var s = nodes.length;\n  for (var i = 0; i < s; i++)\n  {\n    node = nodes[i];\n    node.inclusionTreeDepth = depth;\n\n    if (node.child != null)\n    {\n      this.calcInclusionTreeDepths(node.child, depth + 1);\n    }\n  }\n};\n\nLGraphManager.prototype.includesInvalidEdge = function ()\n{\n  var edge;\n\n  var s = this.edges.length;\n  for (var i = 0; i < s; i++)\n  {\n    edge = this.edges[i];\n\n    if (this.isOneAncestorOfOther(edge.source, edge.target))\n    {\n      return true;\n    }\n  }\n  return false;\n};\n\nmodule.exports = LGraphManager;\n","function LGraphObject(vGraphObject) {\n  this.vGraphObject = vGraphObject;\n}\n\nmodule.exports = LGraphObject;\n","var LGraphObject = require('./LGraphObject');\nvar Integer = require('./Integer');\nvar RectangleD = require('./RectangleD');\nvar LayoutConstants = require('./LayoutConstants');\nvar RandomSeed = require('./RandomSeed');\nvar PointD = require('./PointD');\nvar HashSet = require('./HashSet');\n\nfunction LNode(gm, loc, size, vNode) {\n  //Alternative constructor 1 : LNode(LGraphManager gm, Point loc, Dimension size, Object vNode)\n  if (size == null && vNode == null) {\n    vNode = loc;\n  }\n\n  LGraphObject.call(this, vNode);\n\n  //Alternative constructor 2 : LNode(Layout layout, Object vNode)\n  if (gm.graphManager != null)\n    gm = gm.graphManager;\n\n  this.estimatedSize = Integer.MIN_VALUE;\n  this.inclusionTreeDepth = Integer.MAX_VALUE;\n  this.vGraphObject = vNode;\n  this.edges = [];\n  this.graphManager = gm;\n\n  if (size != null && loc != null)\n    this.rect = new RectangleD(loc.x, loc.y, size.width, size.height);\n  else\n    this.rect = new RectangleD();\n}\n\nLNode.prototype = Object.create(LGraphObject.prototype);\nfor (var prop in LGraphObject) {\n  LNode[prop] = LGraphObject[prop];\n}\n\nLNode.prototype.getEdges = function ()\n{\n  return this.edges;\n};\n\nLNode.prototype.getChild = function ()\n{\n  return this.child;\n};\n\nLNode.prototype.getOwner = function ()\n{\n  if (this.owner != null) {\n    if (!(this.owner == null || this.owner.getNodes().indexOf(this) > -1)) {\n      throw \"assert failed\";\n    }\n  }\n\n  return this.owner;\n};\n\nLNode.prototype.getWidth = function ()\n{\n  return this.rect.width;\n};\n\nLNode.prototype.setWidth = function (width)\n{\n  this.rect.width = width;\n};\n\nLNode.prototype.getHeight = function ()\n{\n  return this.rect.height;\n};\n\nLNode.prototype.setHeight = function (height)\n{\n  this.rect.height = height;\n};\n\nLNode.prototype.getCenterX = function ()\n{\n  return this.rect.x + this.rect.width / 2;\n};\n\nLNode.prototype.getCenterY = function ()\n{\n  return this.rect.y + this.rect.height / 2;\n};\n\nLNode.prototype.getCenter = function ()\n{\n  return new PointD(this.rect.x + this.rect.width / 2,\n          this.rect.y + this.rect.height / 2);\n};\n\nLNode.prototype.getLocation = function ()\n{\n  return new PointD(this.rect.x, this.rect.y);\n};\n\nLNode.prototype.getRect = function ()\n{\n  return this.rect;\n};\n\nLNode.prototype.getDiagonal = function ()\n{\n  return Math.sqrt(this.rect.width * this.rect.width +\n          this.rect.height * this.rect.height);\n};\n\nLNode.prototype.setRect = function (upperLeft, dimension)\n{\n  this.rect.x = upperLeft.x;\n  this.rect.y = upperLeft.y;\n  this.rect.width = dimension.width;\n  this.rect.height = dimension.height;\n};\n\nLNode.prototype.setCenter = function (cx, cy)\n{\n  this.rect.x = cx - this.rect.width / 2;\n  this.rect.y = cy - this.rect.height / 2;\n};\n\nLNode.prototype.setLocation = function (x, y)\n{\n  this.rect.x = x;\n  this.rect.y = y;\n};\n\nLNode.prototype.moveBy = function (dx, dy)\n{\n  this.rect.x += dx;\n  this.rect.y += dy;\n};\n\nLNode.prototype.getEdgeListToNode = function (to)\n{\n  var edgeList = [];\n  var edge;\n\n  for (var obj in this.edges)\n  {\n    edge = obj;\n\n    if (edge.target == to)\n    {\n      if (edge.source != this)\n        throw \"Incorrect edge source!\";\n\n      edgeList.push(edge);\n    }\n  }\n\n  return edgeList;\n};\n\nLNode.prototype.getEdgesBetween = function (other)\n{\n  var edgeList = [];\n  var edge;\n\n  for (var obj in this.edges)\n  {\n    edge = this.edges[obj];\n\n    if (!(edge.source == this || edge.target == this))\n      throw \"Incorrect edge source and/or target\";\n\n    if ((edge.target == other) || (edge.source == other))\n    {\n      edgeList.push(edge);\n    }\n  }\n\n  return edgeList;\n};\n\nLNode.prototype.getNeighborsList = function ()\n{\n  var neighbors = new HashSet();\n  var edge;\n\n  for (var obj in this.edges)\n  {\n    edge = this.edges[obj];\n\n    if (edge.source == this)\n    {\n      neighbors.add(edge.target);\n    }\n    else\n    {\n      if (!edge.target == this)\n        throw \"Incorrect incidency!\";\n      neighbors.add(edge.source);\n    }\n  }\n\n  return neighbors;\n};\n\nLNode.prototype.withChildren = function ()\n{\n  var withNeighborsList = [];\n  var childNode;\n\n  withNeighborsList.push(this);\n\n  if (this.child != null)\n  {\n    var nodes = this.child.getNodes();\n    for (var i = 0; i < nodes.length; i++)\n    {\n      childNode = nodes[i];\n\n      withNeighborsList = withNeighborsList.concat(childNode.withChildren());\n    }\n  }\n\n  return withNeighborsList;\n};\n\nLNode.prototype.getEstimatedSize = function () {\n  if (this.estimatedSize == Integer.MIN_VALUE) {\n    throw \"assert failed\";\n  }\n  return this.estimatedSize;\n};\n\nLNode.prototype.calcEstimatedSize = function () {\n  if (this.child == null)\n  {\n    return this.estimatedSize = Math.floor((this.rect.width + this.rect.height) / 2);\n  }\n  else\n  {\n    this.estimatedSize = this.child.calcEstimatedSize();\n    this.rect.width = this.estimatedSize;\n    this.rect.height = this.estimatedSize;\n\n    return this.estimatedSize;\n  }\n};\n\nLNode.prototype.scatter = function () {\n  var randomCenterX;\n  var randomCenterY;\n\n  var minX = -LayoutConstants.INITIAL_WORLD_BOUNDARY;\n  var maxX = LayoutConstants.INITIAL_WORLD_BOUNDARY;\n  randomCenterX = LayoutConstants.WORLD_CENTER_X +\n          (RandomSeed.nextDouble() * (maxX - minX)) + minX;\n\n  var minY = -LayoutConstants.INITIAL_WORLD_BOUNDARY;\n  var maxY = LayoutConstants.INITIAL_WORLD_BOUNDARY;\n  randomCenterY = LayoutConstants.WORLD_CENTER_Y +\n          (RandomSeed.nextDouble() * (maxY - minY)) + minY;\n\n  this.rect.x = randomCenterX;\n  this.rect.y = randomCenterY\n};\n\nLNode.prototype.updateBounds = function () {\n  if (this.getChild() == null) {\n    throw \"assert failed\";\n  }\n  if (this.getChild().getNodes().length != 0)\n  {\n    // wrap the children nodes by re-arranging the boundaries\n    var childGraph = this.getChild();\n    childGraph.updateBounds(true);\n\n    this.rect.x = childGraph.getLeft();\n    this.rect.y = childGraph.getTop();\n\n    this.setWidth(childGraph.getRight() - childGraph.getLeft());\n    this.setHeight(childGraph.getBottom() - childGraph.getTop());\n  }\n};\n\nLNode.prototype.getInclusionTreeDepth = function ()\n{\n  if (this.inclusionTreeDepth == Integer.MAX_VALUE) {\n    throw \"assert failed\";\n  }\n  return this.inclusionTreeDepth;\n};\n\nLNode.prototype.transform = function (trans)\n{\n  var left = this.rect.x;\n\n  if (left > LayoutConstants.WORLD_BOUNDARY)\n  {\n    left = LayoutConstants.WORLD_BOUNDARY;\n  }\n  else if (left < -LayoutConstants.WORLD_BOUNDARY)\n  {\n    left = -LayoutConstants.WORLD_BOUNDARY;\n  }\n\n  var top = this.rect.y;\n\n  if (top > LayoutConstants.WORLD_BOUNDARY)\n  {\n    top = LayoutConstants.WORLD_BOUNDARY;\n  }\n  else if (top < -LayoutConstants.WORLD_BOUNDARY)\n  {\n    top = -LayoutConstants.WORLD_BOUNDARY;\n  }\n\n  var leftTop = new PointD(left, top);\n  var vLeftTop = trans.inverseTransformPoint(leftTop);\n\n  this.setLocation(vLeftTop.x, vLeftTop.y);\n};\n\nLNode.prototype.getLeft = function ()\n{\n  return this.rect.x;\n};\n\nLNode.prototype.getRight = function ()\n{\n  return this.rect.x + this.rect.width;\n};\n\nLNode.prototype.getTop = function ()\n{\n  return this.rect.y;\n};\n\nLNode.prototype.getBottom = function ()\n{\n  return this.rect.y + this.rect.height;\n};\n\nLNode.prototype.getParent = function ()\n{\n  if (this.owner == null)\n  {\n    return null;\n  }\n\n  return this.owner.getParent();\n};\n\nmodule.exports = LNode;\n","var LayoutConstants = require('./LayoutConstants');\nvar HashMap = require('./HashMap');\nvar LGraphManager = require('./LGraphManager');\nvar LNode = require('./LNode');\nvar LEdge = require('./LEdge');\nvar LGraph = require('./LGraph');\nvar PointD = require('./PointD');\nvar Transform = require('./Transform');\nvar Emitter = require('./Emitter');\nvar HashSet = require('./HashSet');\n\nfunction Layout(isRemoteUse) {\n  Emitter.call( this );\n\n  //Layout Quality: 0:proof, 1:default, 2:draft\n  this.layoutQuality = LayoutConstants.DEFAULT_QUALITY;\n  //Whether layout should create bendpoints as needed or not\n  this.createBendsAsNeeded =\n          LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED;\n  //Whether layout should be incremental or not\n  this.incremental = LayoutConstants.DEFAULT_INCREMENTAL;\n  //Whether we animate from before to after layout node positions\n  this.animationOnLayout =\n          LayoutConstants.DEFAULT_ANIMATION_ON_LAYOUT;\n  //Whether we animate the layout process or not\n  this.animationDuringLayout = LayoutConstants.DEFAULT_ANIMATION_DURING_LAYOUT;\n  //Number iterations that should be done between two successive animations\n  this.animationPeriod = LayoutConstants.DEFAULT_ANIMATION_PERIOD;\n  /**\n   * Whether or not leaf nodes (non-compound nodes) are of uniform sizes. When\n   * they are, both spring and repulsion forces between two leaf nodes can be\n   * calculated without the expensive clipping point calculations, resulting\n   * in major speed-up.\n   */\n  this.uniformLeafNodeSizes =\n          LayoutConstants.DEFAULT_UNIFORM_LEAF_NODE_SIZES;\n  /**\n   * This is used for creation of bendpoints by using dummy nodes and edges.\n   * Maps an LEdge to its dummy bendpoint path.\n   */\n  this.edgeToDummyNodes = new HashMap();\n  this.graphManager = new LGraphManager(this);\n  this.isLayoutFinished = false;\n  this.isSubLayout = false;\n  this.isRemoteUse = false;\n\n  if (isRemoteUse != null) {\n    this.isRemoteUse = isRemoteUse;\n  }\n}\n\nLayout.RANDOM_SEED = 1;\n\nLayout.prototype = Object.create( Emitter.prototype );\n\nLayout.prototype.getGraphManager = function () {\n  return this.graphManager;\n};\n\nLayout.prototype.getAllNodes = function () {\n  return this.graphManager.getAllNodes();\n};\n\nLayout.prototype.getAllEdges = function () {\n  return this.graphManager.getAllEdges();\n};\n\nLayout.prototype.getAllNodesToApplyGravitation = function () {\n  return this.graphManager.getAllNodesToApplyGravitation();\n};\n\nLayout.prototype.newGraphManager = function () {\n  var gm = new LGraphManager(this);\n  this.graphManager = gm;\n  return gm;\n};\n\nLayout.prototype.newGraph = function (vGraph)\n{\n  return new LGraph(null, this.graphManager, vGraph);\n};\n\nLayout.prototype.newNode = function (vNode)\n{\n  return new LNode(this.graphManager, vNode);\n};\n\nLayout.prototype.newEdge = function (vEdge)\n{\n  return new LEdge(null, null, vEdge);\n};\n\nLayout.prototype.runLayout = function ()\n{\n  this.isLayoutFinished = false;\n\n  this.initParameters();\n  var isLayoutSuccessfull;\n\n  if ((this.graphManager.getRoot() == null)\n          || this.graphManager.getRoot().getNodes().length == 0\n          || this.graphManager.includesInvalidEdge())\n  {\n    isLayoutSuccessfull = false;\n  }\n  else\n  {\n    // calculate execution time\n    var startTime = 0;\n\n    if (!this.isSubLayout)\n    {\n      startTime = new Date().getTime()\n    }\n\n    isLayoutSuccessfull = this.layout();\n\n    if (!this.isSubLayout)\n    {\n      var endTime = new Date().getTime();\n      var excTime = endTime - startTime;\n    }\n  }\n\n  if (isLayoutSuccessfull)\n  {\n    if (!this.isSubLayout)\n    {\n      this.doPostLayout();\n    }\n  }\n\n  this.isLayoutFinished = true;\n\n  return isLayoutSuccessfull;\n};\n\n/**\n * This method performs the operations required after layout.\n */\nLayout.prototype.doPostLayout = function ()\n{\n  //assert !isSubLayout : \"Should not be called on sub-layout!\";\n  // Propagate geometric changes to v-level objects\n  this.transform();\n  this.update();\n};\n\n/**\n * This method updates the geometry of the target graph according to\n * calculated layout.\n */\nLayout.prototype.update2 = function () {\n  // update bend points\n  if (this.createBendsAsNeeded)\n  {\n    this.createBendpointsFromDummyNodes();\n\n    // reset all edges, since the topology has changed\n    this.graphManager.resetAllEdges();\n  }\n\n  // perform edge, node and root updates if layout is not called\n  // remotely\n  if (!this.isRemoteUse)\n  {\n    // update all edges\n    var edge;\n    var allEdges = this.graphManager.getAllEdges();\n    for (var i = 0; i < allEdges.length; i++)\n    {\n      edge = allEdges[i];\n//      this.update(edge);\n    }\n\n    // recursively update nodes\n    var node;\n    var nodes = this.graphManager.getRoot().getNodes();\n    for (var i = 0; i < nodes.length; i++)\n    {\n      node = nodes[i];\n//      this.update(node);\n    }\n\n    // update root graph\n    this.update(this.graphManager.getRoot());\n  }\n};\n\nLayout.prototype.update = function (obj) {\n  if (obj == null) {\n    this.update2();\n  }\n  else if (obj instanceof LNode) {\n    var node = obj;\n    if (node.getChild() != null)\n    {\n      // since node is compound, recursively update child nodes\n      var nodes = node.getChild().getNodes();\n      for (var i = 0; i < nodes.length; i++)\n      {\n        update(nodes[i]);\n      }\n    }\n\n    // if the l-level node is associated with a v-level graph object,\n    // then it is assumed that the v-level node implements the\n    // interface Updatable.\n    if (node.vGraphObject != null)\n    {\n      // cast to Updatable without any type check\n      var vNode = node.vGraphObject;\n\n      // call the update method of the interface\n      vNode.update(node);\n    }\n  }\n  else if (obj instanceof LEdge) {\n    var edge = obj;\n    // if the l-level edge is associated with a v-level graph object,\n    // then it is assumed that the v-level edge implements the\n    // interface Updatable.\n\n    if (edge.vGraphObject != null)\n    {\n      // cast to Updatable without any type check\n      var vEdge = edge.vGraphObject;\n\n      // call the update method of the interface\n      vEdge.update(edge);\n    }\n  }\n  else if (obj instanceof LGraph) {\n    var graph = obj;\n    // if the l-level graph is associated with a v-level graph object,\n    // then it is assumed that the v-level object implements the\n    // interface Updatable.\n\n    if (graph.vGraphObject != null)\n    {\n      // cast to Updatable without any type check\n      var vGraph = graph.vGraphObject;\n\n      // call the update method of the interface\n      vGraph.update(graph);\n    }\n  }\n};\n\n/**\n * This method is used to set all layout parameters to default values\n * determined at compile time.\n */\nLayout.prototype.initParameters = function () {\n  if (!this.isSubLayout)\n  {\n    this.layoutQuality = LayoutConstants.DEFAULT_QUALITY;\n    this.animationDuringLayout = LayoutConstants.DEFAULT_ANIMATION_ON_LAYOUT;\n    this.animationPeriod = LayoutConstants.DEFAULT_ANIMATION_PERIOD;\n    this.animationOnLayout = LayoutConstants.DEFAULT_ANIMATION_DURING_LAYOUT;\n    this.incremental = LayoutConstants.DEFAULT_INCREMENTAL;\n    this.createBendsAsNeeded = LayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED;\n    this.uniformLeafNodeSizes = LayoutConstants.DEFAULT_UNIFORM_LEAF_NODE_SIZES;\n  }\n\n  if (this.animationDuringLayout)\n  {\n    animationOnLayout = false;\n  }\n};\n\nLayout.prototype.transform = function (newLeftTop) {\n  if (newLeftTop == undefined) {\n    this.transform(new PointD(0, 0));\n  }\n  else {\n    // create a transformation object (from Eclipse to layout). When an\n    // inverse transform is applied, we get upper-left coordinate of the\n    // drawing or the root graph at given input coordinate (some margins\n    // already included in calculation of left-top).\n\n    var trans = new Transform();\n    var leftTop = this.graphManager.getRoot().updateLeftTop();\n\n    if (leftTop != null)\n    {\n      trans.setWorldOrgX(newLeftTop.x);\n      trans.setWorldOrgY(newLeftTop.y);\n\n      trans.setDeviceOrgX(leftTop.x);\n      trans.setDeviceOrgY(leftTop.y);\n\n      var nodes = this.getAllNodes();\n      var node;\n\n      for (var i = 0; i < nodes.length; i++)\n      {\n        node = nodes[i];\n        node.transform(trans);\n      }\n    }\n  }\n};\n\nLayout.prototype.positionNodesRandomly = function (graph) {\n\n  if (graph == undefined) {\n    //assert !this.incremental;\n    this.positionNodesRandomly(this.getGraphManager().getRoot());\n    this.getGraphManager().getRoot().updateBounds(true);\n  }\n  else {\n    var lNode;\n    var childGraph;\n\n    var nodes = graph.getNodes();\n    for (var i = 0; i < nodes.length; i++)\n    {\n      lNode = nodes[i];\n      childGraph = lNode.getChild();\n\n      if (childGraph == null)\n      {\n        lNode.scatter();\n      }\n      else if (childGraph.getNodes().length == 0)\n      {\n        lNode.scatter();\n      }\n      else\n      {\n        this.positionNodesRandomly(childGraph);\n        lNode.updateBounds();\n      }\n    }\n  }\n};\n\n/**\n * This method returns a list of trees where each tree is represented as a\n * list of l-nodes. The method returns a list of size 0 when:\n * - The graph is not flat or\n * - One of the component(s) of the graph is not a tree.\n */\nLayout.prototype.getFlatForest = function ()\n{\n  var flatForest = [];\n  var isForest = true;\n\n  // Quick reference for all nodes in the graph manager associated with\n  // this layout. The list should not be changed.\n  var allNodes = this.graphManager.getRoot().getNodes();\n\n  // First be sure that the graph is flat\n  var isFlat = true;\n\n  for (var i = 0; i < allNodes.length; i++)\n  {\n    if (allNodes[i].getChild() != null)\n    {\n      isFlat = false;\n    }\n  }\n\n  // Return empty forest if the graph is not flat.\n  if (!isFlat)\n  {\n    return flatForest;\n  }\n\n  // Run BFS for each component of the graph.\n\n  var visited = new HashSet();\n  var toBeVisited = [];\n  var parents = new HashMap();\n  var unProcessedNodes = [];\n\n  unProcessedNodes = unProcessedNodes.concat(allNodes);\n\n  // Each iteration of this loop finds a component of the graph and\n  // decides whether it is a tree or not. If it is a tree, adds it to the\n  // forest and continued with the next component.\n\n  while (unProcessedNodes.length > 0 && isForest)\n  {\n    toBeVisited.push(unProcessedNodes[0]);\n\n    // Start the BFS. Each iteration of this loop visits a node in a\n    // BFS manner.\n    while (toBeVisited.length > 0 && isForest)\n    {\n      //pool operation\n      var currentNode = toBeVisited[0];\n      toBeVisited.splice(0, 1);\n      visited.add(currentNode);\n\n      // Traverse all neighbors of this node\n      var neighborEdges = currentNode.getEdges();\n\n      for (var i = 0; i < neighborEdges.length; i++)\n      {\n        var currentNeighbor =\n                neighborEdges[i].getOtherEnd(currentNode);\n\n        // If BFS is not growing from this neighbor.\n        if (parents.get(currentNode) != currentNeighbor)\n        {\n          // We haven't previously visited this neighbor.\n          if (!visited.contains(currentNeighbor))\n          {\n            toBeVisited.push(currentNeighbor);\n            parents.put(currentNeighbor, currentNode);\n          }\n          // Since we have previously visited this neighbor and\n          // this neighbor is not parent of currentNode, given\n          // graph contains a component that is not tree, hence\n          // it is not a forest.\n          else\n          {\n            isForest = false;\n            break;\n          }\n        }\n      }\n    }\n\n    // The graph contains a component that is not a tree. Empty\n    // previously found trees. The method will end.\n    if (!isForest)\n    {\n      flatForest = [];\n    }\n    // Save currently visited nodes as a tree in our forest. Reset\n    // visited and parents lists. Continue with the next component of\n    // the graph, if any.\n    else\n    {\n      var temp = [];\n      visited.addAllTo(temp);\n      flatForest.push(temp);\n      //flatForest = flatForest.concat(temp);\n      //unProcessedNodes.removeAll(visited);\n      for (var i = 0; i < temp.length; i++) {\n        var value = temp[i];\n        var index = unProcessedNodes.indexOf(value);\n        if (index > -1) {\n          unProcessedNodes.splice(index, 1);\n        }\n      }\n      visited = new HashSet();\n      parents = new HashMap();\n    }\n  }\n\n  return flatForest;\n};\n\n/**\n * This method creates dummy nodes (an l-level node with minimal dimensions)\n * for the given edge (one per bendpoint). The existing l-level structure\n * is updated accordingly.\n */\nLayout.prototype.createDummyNodesForBendpoints = function (edge)\n{\n  var dummyNodes = [];\n  var prev = edge.source;\n\n  var graph = this.graphManager.calcLowestCommonAncestor(edge.source, edge.target);\n\n  for (var i = 0; i < edge.bendpoints.length; i++)\n  {\n    // create new dummy node\n    var dummyNode = this.newNode(null);\n    dummyNode.setRect(new Point(0, 0), new Dimension(1, 1));\n\n    graph.add(dummyNode);\n\n    // create new dummy edge between prev and dummy node\n    var dummyEdge = this.newEdge(null);\n    this.graphManager.add(dummyEdge, prev, dummyNode);\n\n    dummyNodes.add(dummyNode);\n    prev = dummyNode;\n  }\n\n  var dummyEdge = this.newEdge(null);\n  this.graphManager.add(dummyEdge, prev, edge.target);\n\n  this.edgeToDummyNodes.put(edge, dummyNodes);\n\n  // remove real edge from graph manager if it is inter-graph\n  if (edge.isInterGraph())\n  {\n    this.graphManager.remove(edge);\n  }\n  // else, remove the edge from the current graph\n  else\n  {\n    graph.remove(edge);\n  }\n\n  return dummyNodes;\n};\n\n/**\n * This method creates bendpoints for edges from the dummy nodes\n * at l-level.\n */\nLayout.prototype.createBendpointsFromDummyNodes = function ()\n{\n  var edges = [];\n  edges = edges.concat(this.graphManager.getAllEdges());\n  edges = this.edgeToDummyNodes.keySet().concat(edges);\n\n  for (var k = 0; k < edges.length; k++)\n  {\n    var lEdge = edges[k];\n\n    if (lEdge.bendpoints.length > 0)\n    {\n      var path = this.edgeToDummyNodes.get(lEdge);\n\n      for (var i = 0; i < path.length; i++)\n      {\n        var dummyNode = path[i];\n        var p = new PointD(dummyNode.getCenterX(),\n                dummyNode.getCenterY());\n\n        // update bendpoint's location according to dummy node\n        var ebp = lEdge.bendpoints.get(i);\n        ebp.x = p.x;\n        ebp.y = p.y;\n\n        // remove the dummy node, dummy edges incident with this\n        // dummy node is also removed (within the remove method)\n        dummyNode.getOwner().remove(dummyNode);\n      }\n\n      // add the real edge to graph\n      this.graphManager.add(lEdge, lEdge.source, lEdge.target);\n    }\n  }\n};\n\nLayout.transform = function (sliderValue, defaultValue, minDiv, maxMul) {\n  if (minDiv != undefined && maxMul != undefined) {\n    var value = defaultValue;\n\n    if (sliderValue <= 50)\n    {\n      var minValue = defaultValue / minDiv;\n      value -= ((defaultValue - minValue) / 50) * (50 - sliderValue);\n    }\n    else\n    {\n      var maxValue = defaultValue * maxMul;\n      value += ((maxValue - defaultValue) / 50) * (sliderValue - 50);\n    }\n\n    return value;\n  }\n  else {\n    var a, b;\n\n    if (sliderValue <= 50)\n    {\n      a = 9.0 * defaultValue / 500.0;\n      b = defaultValue / 10.0;\n    }\n    else\n    {\n      a = 9.0 * defaultValue / 50.0;\n      b = -8 * defaultValue;\n    }\n\n    return (a * sliderValue + b);\n  }\n};\n\n/**\n * This method finds and returns the center of the given nodes, assuming\n * that the given nodes form a tree in themselves.\n */\nLayout.findCenterOfTree = function (nodes)\n{\n  var list = [];\n  list = list.concat(nodes);\n\n  var removedNodes = [];\n  var remainingDegrees = new HashMap();\n  var foundCenter = false;\n  var centerNode = null;\n\n  if (list.length == 1 || list.length == 2)\n  {\n    foundCenter = true;\n    centerNode = list[0];\n  }\n\n  for (var i = 0; i < list.length; i++)\n  {\n    var node = list[i];\n    var degree = node.getNeighborsList().size();\n    remainingDegrees.put(node, node.getNeighborsList().size());\n\n    if (degree == 1)\n    {\n      removedNodes.push(node);\n    }\n  }\n\n  var tempList = [];\n  tempList = tempList.concat(removedNodes);\n\n  while (!foundCenter)\n  {\n    var tempList2 = [];\n    tempList2 = tempList2.concat(tempList);\n    tempList = [];\n\n    for (var i = 0; i < list.length; i++)\n    {\n      var node = list[i];\n\n      var index = list.indexOf(node);\n      if (index >= 0) {\n        list.splice(index, 1);\n      }\n\n      var neighbours = node.getNeighborsList();\n\n      for (var j in neighbours.set)\n      {\n        var neighbour = neighbours.set[j];\n        if (removedNodes.indexOf(neighbour) < 0)\n        {\n          var otherDegree = remainingDegrees.get(neighbour);\n          var newDegree = otherDegree - 1;\n\n          if (newDegree == 1)\n          {\n            tempList.push(neighbour);\n          }\n\n          remainingDegrees.put(neighbour, newDegree);\n        }\n      }\n    }\n\n    removedNodes = removedNodes.concat(tempList);\n\n    if (list.length == 1 || list.length == 2)\n    {\n      foundCenter = true;\n      centerNode = list[0];\n    }\n  }\n\n  return centerNode;\n};\n\n/**\n * During the coarsening process, this layout may be referenced by two graph managers\n * this setter function grants access to change the currently being used graph manager\n */\nLayout.prototype.setGraphManager = function (gm)\n{\n  this.graphManager = gm;\n};\n\nmodule.exports = Layout;\n","function LayoutConstants() {\n}\n\n/**\n * Layout Quality\n */\nLayoutConstants.PROOF_QUALITY = 0;\nLayoutConstants.DEFAULT_QUALITY = 1;\nLayoutConstants.DRAFT_QUALITY = 2;\n\n/**\n * Default parameters\n */\nLayoutConstants.DEFAULT_CREATE_BENDS_AS_NEEDED = false;\n//LayoutConstants.DEFAULT_INCREMENTAL = true;\nLayoutConstants.DEFAULT_INCREMENTAL = false;\nLayoutConstants.DEFAULT_ANIMATION_ON_LAYOUT = true;\nLayoutConstants.DEFAULT_ANIMATION_DURING_LAYOUT = false;\nLayoutConstants.DEFAULT_ANIMATION_PERIOD = 50;\nLayoutConstants.DEFAULT_UNIFORM_LEAF_NODE_SIZES = false;\n\n// -----------------------------------------------------------------------------\n// Section: General other constants\n// -----------------------------------------------------------------------------\n/*\n * Margins of a graph to be applied on bouding rectangle of its contents. We\n * assume margins on all four sides to be uniform.\n */\nLayoutConstants.DEFAULT_GRAPH_MARGIN = 15;\n\n/*\n * Default dimension of a non-compound node.\n */\nLayoutConstants.SIMPLE_NODE_SIZE = 40;\n\n/*\n * Default dimension of a non-compound node.\n */\nLayoutConstants.SIMPLE_NODE_HALF_SIZE = LayoutConstants.SIMPLE_NODE_SIZE / 2;\n\n/*\n * Empty compound node size. When a compound node is empty, its both\n * dimensions should be of this value.\n */\nLayoutConstants.EMPTY_COMPOUND_NODE_SIZE = 40;\n\n/*\n * Minimum length that an edge should take during layout\n */\nLayoutConstants.MIN_EDGE_LENGTH = 1;\n\n/*\n * World boundaries that layout operates on\n */\nLayoutConstants.WORLD_BOUNDARY = 1000000;\n\n/*\n * World boundaries that random positioning can be performed with\n */\nLayoutConstants.INITIAL_WORLD_BOUNDARY = LayoutConstants.WORLD_BOUNDARY / 1000;\n\n/*\n * Coordinates of the world center\n */\nLayoutConstants.WORLD_CENTER_X = 1200;\nLayoutConstants.WORLD_CENTER_Y = 900;\n\nmodule.exports = LayoutConstants;\n","/*\n *This class is the javascript implementation of the Point.java class in jdk\n */\nfunction Point(x, y, p) {\n  this.x = null;\n  this.y = null;\n  if (x == null && y == null && p == null) {\n    this.x = 0;\n    this.y = 0;\n  }\n  else if (typeof x == 'number' && typeof y == 'number' && p == null) {\n    this.x = x;\n    this.y = y;\n  }\n  else if (x.constructor.name == 'Point' && y == null && p == null) {\n    p = x;\n    this.x = p.x;\n    this.y = p.y;\n  }\n}\n\nPoint.prototype.getX = function () {\n  return this.x;\n}\n\nPoint.prototype.getY = function () {\n  return this.y;\n}\n\nPoint.prototype.getLocation = function () {\n  return new Point(this.x, this.y);\n}\n\nPoint.prototype.setLocation = function (x, y, p) {\n  if (x.constructor.name == 'Point' && y == null && p == null) {\n    p = x;\n    this.setLocation(p.x, p.y);\n  }\n  else if (typeof x == 'number' && typeof y == 'number' && p == null) {\n    //if both parameters are integer just move (x,y) location\n    if (parseInt(x) == x && parseInt(y) == y) {\n      this.move(x, y);\n    }\n    else {\n      this.x = Math.floor(x + 0.5);\n      this.y = Math.floor(y + 0.5);\n    }\n  }\n}\n\nPoint.prototype.move = function (x, y) {\n  this.x = x;\n  this.y = y;\n}\n\nPoint.prototype.translate = function (dx, dy) {\n  this.x += dx;\n  this.y += dy;\n}\n\nPoint.prototype.equals = function (obj) {\n  if (obj.constructor.name == \"Point\") {\n    var pt = obj;\n    return (this.x == pt.x) && (this.y == pt.y);\n  }\n  return this == obj;\n}\n\nPoint.prototype.toString = function () {\n  return new Point().constructor.name + \"[x=\" + this.x + \",y=\" + this.y + \"]\";\n}\n\nmodule.exports = Point;\n","function PointD(x, y) {\n  if (x == null && y == null) {\n    this.x = 0;\n    this.y = 0;\n  } else {\n    this.x = x;\n    this.y = y;\n  }\n}\n\nPointD.prototype.getX = function ()\n{\n  return this.x;\n};\n\nPointD.prototype.getY = function ()\n{\n  return this.y;\n};\n\nPointD.prototype.setX = function (x)\n{\n  this.x = x;\n};\n\nPointD.prototype.setY = function (y)\n{\n  this.y = y;\n};\n\nPointD.prototype.getDifference = function (pt)\n{\n  return new DimensionD(this.x - pt.x, this.y - pt.y);\n};\n\nPointD.prototype.getCopy = function ()\n{\n  return new PointD(this.x, this.y);\n};\n\nPointD.prototype.translate = function (dim)\n{\n  this.x += dim.width;\n  this.y += dim.height;\n  return this;\n};\n\nmodule.exports = PointD;\n","function RandomSeed() {\n}\nRandomSeed.seed = 1;\nRandomSeed.x = 0;\n\nRandomSeed.nextDouble = function () {\n  RandomSeed.x = Math.sin(RandomSeed.seed++) * 10000;\n  return RandomSeed.x - Math.floor(RandomSeed.x);\n};\n\nmodule.exports = RandomSeed;\n","function RectangleD(x, y, width, height) {\n  this.x = 0;\n  this.y = 0;\n  this.width = 0;\n  this.height = 0;\n\n  if (x != null && y != null && width != null && height != null) {\n    this.x = x;\n    this.y = y;\n    this.width = width;\n    this.height = height;\n  }\n}\n\nRectangleD.prototype.getX = function ()\n{\n  return this.x;\n};\n\nRectangleD.prototype.setX = function (x)\n{\n  this.x = x;\n};\n\nRectangleD.prototype.getY = function ()\n{\n  return this.y;\n};\n\nRectangleD.prototype.setY = function (y)\n{\n  this.y = y;\n};\n\nRectangleD.prototype.getWidth = function ()\n{\n  return this.width;\n};\n\nRectangleD.prototype.setWidth = function (width)\n{\n  this.width = width;\n};\n\nRectangleD.prototype.getHeight = function ()\n{\n  return this.height;\n};\n\nRectangleD.prototype.setHeight = function (height)\n{\n  this.height = height;\n};\n\nRectangleD.prototype.getRight = function ()\n{\n  return this.x + this.width;\n};\n\nRectangleD.prototype.getBottom = function ()\n{\n  return this.y + this.height;\n};\n\nRectangleD.prototype.intersects = function (a)\n{\n  if (this.getRight() < a.x)\n  {\n    return false;\n  }\n\n  if (this.getBottom() < a.y)\n  {\n    return false;\n  }\n\n  if (a.getRight() < this.x)\n  {\n    return false;\n  }\n\n  if (a.getBottom() < this.y)\n  {\n    return false;\n  }\n\n  return true;\n};\n\nRectangleD.prototype.getCenterX = function ()\n{\n  return this.x + this.width / 2;\n};\n\nRectangleD.prototype.getMinX = function ()\n{\n  return this.getX();\n};\n\nRectangleD.prototype.getMaxX = function ()\n{\n  return this.getX() + this.width;\n};\n\nRectangleD.prototype.getCenterY = function ()\n{\n  return this.y + this.height / 2;\n};\n\nRectangleD.prototype.getMinY = function ()\n{\n  return this.getY();\n};\n\nRectangleD.prototype.getMaxY = function ()\n{\n  return this.getY() + this.height;\n};\n\nRectangleD.prototype.getWidthHalf = function ()\n{\n  return this.width / 2;\n};\n\nRectangleD.prototype.getHeightHalf = function ()\n{\n  return this.height / 2;\n};\n\nmodule.exports = RectangleD;\n","module.exports = function (instance) {\n  instance.toBeTiled = {};\n  \n  instance.getToBeTiled = function (node) {\n    var id = node.data(\"id\");\n    //firstly check the previous results\n    if (instance.toBeTiled[id] != null) {\n      return instance.toBeTiled[id];\n    }\n\n    //only compound nodes are to be tiled\n    var children = node.children();\n    if (children == null || children.length == 0) {\n      instance.toBeTiled[id] = false;\n      return false;\n    }\n\n    //a compound node is not to be tiled if all of its compound children are not to be tiled\n    for (var i = 0; i < children.length; i++) {\n      var theChild = children[i];\n\n      if (instance.getNodeDegree(theChild) > 0) {\n        instance.toBeTiled[id] = false;\n        return false;\n      }\n\n      //pass the children not having the compound structure\n      if (theChild.children() == null || theChild.children().length == 0) {\n        instance.toBeTiled[theChild.data(\"id\")] = false;\n        continue;\n      }\n\n      if (!instance.getToBeTiled(theChild)) {\n        instance.toBeTiled[id] = false;\n        return false;\n      }\n    }\n    instance.toBeTiled[id] = true;\n    return true;\n  };\n\n  instance.getNodeDegree = function (node) {\n    var id = node.id();\n    var edges = instance.options.eles.edges().filter(function (ele, i) {\n      if (typeof ele === \"number\") {\n        ele = i;\n      }\n      var source = ele.data('source');\n      var target = ele.data('target');\n      if (source != target && (source == id || target == id)) {\n        return true;\n      }\n    });\n    return edges.length;\n  };\n\n  instance.getNodeDegreeWithChildren = function (node) {\n    var degree = instance.getNodeDegree(node);\n    var children = node.children();\n    for (var i = 0; i < children.length; i++) {\n      var child = children[i];\n      degree += instance.getNodeDegreeWithChildren(child);\n    }\n    return degree;\n  };\n\n  instance.groupZeroDegreeMembers = function () {\n    // array of [parent_id x oneDegreeNode_id]\n    var tempMemberGroups = [];\n    var memberGroups = [];\n    var self = this;\n    var parentMap = {};\n\n    for (var i = 0; i < instance.options.eles.nodes().length; i++) {\n      parentMap[instance.options.eles.nodes()[i].id()] = true;\n    }\n\n    // Find all zero degree nodes which aren't covered by a compound\n    var zeroDegree = instance.options.eles.nodes().filter(function (ele, i) {\n      if (typeof ele === \"number\") {\n        ele = i;\n      }\n      var pid = ele.data('parent');\n      if (pid != undefined && !parentMap[pid]) {\n        pid = undefined;\n      }\n\n      if (self.getNodeDegreeWithChildren(ele) == 0 && (pid == undefined || (pid != undefined && !self.getToBeTiled(ele.parent()[0]))))\n        return true;\n      else\n        return false;\n    });\n\n    // Create a map of parent node and its zero degree members\n    for (var i = 0; i < zeroDegree.length; i++)\n    {\n      var node = zeroDegree[i];\n      var p_id = node.parent().id();\n\n      if (p_id != undefined && !parentMap[p_id]) {\n        p_id = undefined;\n      }\n\n      if (typeof tempMemberGroups[p_id] === \"undefined\")\n        tempMemberGroups[p_id] = [];\n\n      tempMemberGroups[p_id] = tempMemberGroups[p_id].concat(node);\n    }\n\n    // If there are at least two nodes at a level, create a dummy compound for them\n    for (var p_id in tempMemberGroups) {\n      if (tempMemberGroups[p_id].length > 1) {\n        var dummyCompoundId = \"DummyCompound_\" + p_id;\n        memberGroups[dummyCompoundId] = tempMemberGroups[p_id];\n\n        // Create a dummy compound\n        if (instance.options.cy.getElementById(dummyCompoundId).empty()) {\n          instance.options.cy.add({\n            group: \"nodes\",\n            data: {id: dummyCompoundId, parent: p_id\n            }\n          });\n\n          var dummy = instance.options.cy.nodes()[instance.options.cy.nodes().length - 1];\n          instance.options.eles = instance.options.eles.union(dummy);\n          dummy.hide();\n\n          for (var i = 0; i < tempMemberGroups[p_id].length; i++) {\n            if (i == 0) {\n              dummy.scratch('coseBilkent', {tempchildren: []});\n            }\n            var node = tempMemberGroups[p_id][i];\n            var scratchObj = node.scratch('coseBilkent');\n            if (!scratchObj) {\n              scratchObj = {};\n              node.scratch('coseBilkent', scratchObj);\n            }\n            scratchObj['dummy_parent_id'] = dummyCompoundId;\n            instance.options.cy.add({\n              group: \"nodes\",\n              data: {parent: dummyCompoundId, width: node.width(), height: node.height()\n              }\n            });\n            var tempchild = instance.options.cy.nodes()[instance.options.cy.nodes().length - 1];\n            tempchild.hide();\n            tempchild.css('width', tempchild.data('width'));\n            tempchild.css('height', tempchild.data('height'));\n            tempchild.width();\n            dummy.scratch('coseBilkent').tempchildren.push(tempchild);\n          }\n        }\n      }\n    }\n\n    return memberGroups;\n  };\n\n  instance.performDFSOnCompounds = function (options) {\n    var compoundOrder = [];\n\n    var roots = instance.getTopMostNodes(instance.options.eles.nodes());\n    instance.fillCompexOrderByDFS(compoundOrder, roots);\n\n    return compoundOrder;\n  };\n\n  instance.fillCompexOrderByDFS = function (compoundOrder, children) {\n    for (var i = 0; i < children.length; i++) {\n      var child = children[i];\n      instance.fillCompexOrderByDFS(compoundOrder, child.children());\n      if (instance.getToBeTiled(child)) {\n        compoundOrder.push(child);\n      }\n    }\n  };\n\n  instance.clearCompounds = function () {\n    var childGraphMap = [];\n\n    // Get compound ordering by finding the inner one first\n    var compoundOrder = instance.performDFSOnCompounds(instance.options);\n    instance.compoundOrder = compoundOrder;\n    instance.processChildrenList(instance.root, instance.getTopMostNodes(instance.options.eles.nodes()), instance.layout);\n\n    for (var i = 0; i < compoundOrder.length; i++) {\n      // find the corresponding layout node\n      var lCompoundNode = instance.idToLNode[compoundOrder[i].id()];\n\n      childGraphMap[compoundOrder[i].id()] = compoundOrder[i].children();\n\n      // Remove children of compounds\n      lCompoundNode.child = null;\n    }\n\n    // Tile the removed children\n    var tiledMemberPack = instance.tileCompoundMembers(childGraphMap);\n\n    return tiledMemberPack;\n  };\n\n  instance.clearZeroDegreeMembers = function (memberGroups) {\n    var tiledZeroDegreePack = [];\n\n    for (var id in memberGroups) {\n      var compoundNode = instance.idToLNode[id];\n\n      tiledZeroDegreePack[id] = instance.tileNodes(memberGroups[id]);\n\n      // Set the width and height of the dummy compound as calculated\n      compoundNode.rect.width = tiledZeroDegreePack[id].width;\n      compoundNode.rect.height = tiledZeroDegreePack[id].height;\n    }\n    return tiledZeroDegreePack;\n  };\n\n  instance.repopulateCompounds = function (tiledMemberPack) {\n    for (var i = instance.compoundOrder.length - 1; i >= 0; i--) {\n      var id = instance.compoundOrder[i].id();\n      var lCompoundNode = instance.idToLNode[id];\n      var horizontalMargin = parseInt(instance.compoundOrder[i].css('padding-left'));\n      var verticalMargin = parseInt(instance.compoundOrder[i].css('padding-top'));\n\n      instance.adjustLocations(tiledMemberPack[id], lCompoundNode.rect.x, lCompoundNode.rect.y, horizontalMargin, verticalMargin);\n    }\n  };\n\n  instance.repopulateZeroDegreeMembers = function (tiledPack) {\n    for (var i in tiledPack) {\n      var compound = instance.cy.getElementById(i);\n      var compoundNode = instance.idToLNode[i];\n      var horizontalMargin = parseInt(compound.css('padding-left'));\n      var verticalMargin = parseInt(compound.css('padding-top'));\n\n      // Adjust the positions of nodes wrt its compound\n      instance.adjustLocations(tiledPack[i], compoundNode.rect.x, compoundNode.rect.y, horizontalMargin, verticalMargin);\n\n      var tempchildren = compound.scratch('coseBilkent').tempchildren;\n      for (var i = 0; i < tempchildren.length; i++) {\n        tempchildren[i].remove();\n      }\n\n      // Remove the dummy compound\n      compound.remove();\n    }\n  };\n\n  /**\n   * This method places each zero degree member wrt given (x,y) coordinates (top left).\n   */\n  instance.adjustLocations = function (organization, x, y, compoundHorizontalMargin, compoundVerticalMargin) {\n    x += compoundHorizontalMargin;\n    y += compoundVerticalMargin;\n\n    var left = x;\n\n    for (var i = 0; i < organization.rows.length; i++) {\n      var row = organization.rows[i];\n      x = left;\n      var maxHeight = 0;\n\n      for (var j = 0; j < row.length; j++) {\n        var lnode = row[j];\n        var node = instance.cy.getElementById(lnode.id);\n\n        lnode.rect.x = x;// + lnode.rect.width / 2;\n        lnode.rect.y = y;// + lnode.rect.height / 2;\n\n        x += lnode.rect.width + organization.horizontalPadding;\n\n        if (lnode.rect.height > maxHeight)\n          maxHeight = lnode.rect.height;\n      }\n\n      y += maxHeight + organization.verticalPadding;\n    }\n  };\n\n  instance.tileCompoundMembers = function (childGraphMap) {\n    var tiledMemberPack = [];\n\n    for (var id in childGraphMap) {\n      // Access layoutInfo nodes to set the width and height of compounds\n      var compoundNode = instance.idToLNode[id];\n\n      tiledMemberPack[id] = instance.tileNodes(childGraphMap[id]);\n\n      compoundNode.rect.width = tiledMemberPack[id].width + 20;\n      compoundNode.rect.height = tiledMemberPack[id].height + 20;\n    }\n\n    return tiledMemberPack;\n  };\n\n  instance.tileNodes = function (nodes) {\n    var self = this;\n    var verticalPadding = typeof self.options.tilingPaddingVertical === 'function' ? self.options.tilingPaddingVertical.call() : self.options.tilingPaddingVertical;\n    var horizontalPadding = typeof self.options.tilingPaddingHorizontal === 'function' ? self.options.tilingPaddingHorizontal.call() : self.options.tilingPaddingHorizontal;\n    var organization = {\n      rows: [],\n      rowWidth: [],\n      rowHeight: [],\n      width: 20,\n      height: 20,\n      verticalPadding: verticalPadding,\n      horizontalPadding: horizontalPadding\n    };\n\n    var layoutNodes = [];\n\n    // Get layout nodes\n    for (var i = 0; i < nodes.length; i++) {\n      var node = nodes[i];\n      var lNode = instance.idToLNode[node.id()];\n\n      if (!node.scratch('coseBilkent') || !node.scratch('coseBilkent').dummy_parent_id) {\n        var owner = lNode.owner;\n        owner.remove(lNode);\n\n        instance.gm.resetAllNodes();\n        instance.gm.getAllNodes();\n      }\n\n      layoutNodes.push(lNode);\n    }\n\n    // Sort the nodes in ascending order of their areas\n    layoutNodes.sort(function (n1, n2) {\n      if (n1.rect.width * n1.rect.height > n2.rect.width * n2.rect.height)\n        return -1;\n      if (n1.rect.width * n1.rect.height < n2.rect.width * n2.rect.height)\n        return 1;\n      return 0;\n    });\n\n    // Create the organization -> tile members\n    for (var i = 0; i < layoutNodes.length; i++) {\n      var lNode = layoutNodes[i];\n\n      var cyNode = instance.cy.getElementById(lNode.id).parent()[0];\n      var minWidth = 0;\n      if (cyNode) {\n        minWidth = parseInt(cyNode.css('padding-left')) + parseInt(cyNode.css('padding-right'));\n      }\n\n      if (organization.rows.length == 0) {\n        instance.insertNodeToRow(organization, lNode, 0, minWidth);\n      }\n      else if (instance.canAddHorizontal(organization, lNode.rect.width, lNode.rect.height)) {\n        instance.insertNodeToRow(organization, lNode, instance.getShortestRowIndex(organization), minWidth);\n      }\n      else {\n        instance.insertNodeToRow(organization, lNode, organization.rows.length, minWidth);\n      }\n\n      instance.shiftToLastRow(organization);\n    }\n\n    return organization;\n  };\n\n  instance.insertNodeToRow = function (organization, node, rowIndex, minWidth) {\n    var minCompoundSize = minWidth;\n\n    // Add new row if needed\n    if (rowIndex == organization.rows.length) {\n      var secondDimension = [];\n\n      organization.rows.push(secondDimension);\n      organization.rowWidth.push(minCompoundSize);\n      organization.rowHeight.push(0);\n    }\n\n    // Update row width\n    var w = organization.rowWidth[rowIndex] + node.rect.width;\n\n    if (organization.rows[rowIndex].length > 0) {\n      w += organization.horizontalPadding;\n    }\n\n    organization.rowWidth[rowIndex] = w;\n    // Update compound width\n    if (organization.width < w) {\n      organization.width = w;\n    }\n\n    // Update height\n    var h = node.rect.height;\n    if (rowIndex > 0)\n      h += organization.verticalPadding;\n\n    var extraHeight = 0;\n    if (h > organization.rowHeight[rowIndex]) {\n      extraHeight = organization.rowHeight[rowIndex];\n      organization.rowHeight[rowIndex] = h;\n      extraHeight = organization.rowHeight[rowIndex] - extraHeight;\n    }\n\n    organization.height += extraHeight;\n\n    // Insert node\n    organization.rows[rowIndex].push(node);\n  };\n\n//Scans the rows of an organization and returns the one with the min width\n  instance.getShortestRowIndex = function (organization) {\n    var r = -1;\n    var min = Number.MAX_VALUE;\n\n    for (var i = 0; i < organization.rows.length; i++) {\n      if (organization.rowWidth[i] < min) {\n        r = i;\n        min = organization.rowWidth[i];\n      }\n    }\n    return r;\n  };\n\n//Scans the rows of an organization and returns the one with the max width\n  instance.getLongestRowIndex = function (organization) {\n    var r = -1;\n    var max = Number.MIN_VALUE;\n\n    for (var i = 0; i < organization.rows.length; i++) {\n\n      if (organization.rowWidth[i] > max) {\n        r = i;\n        max = organization.rowWidth[i];\n      }\n    }\n\n    return r;\n  };\n\n  /**\n   * This method checks whether adding extra width to the organization violates\n   * the aspect ratio(1) or not.\n   */\n  instance.canAddHorizontal = function (organization, extraWidth, extraHeight) {\n\n    var sri = instance.getShortestRowIndex(organization);\n\n    if (sri < 0) {\n      return true;\n    }\n\n    var min = organization.rowWidth[sri];\n\n    if (min + organization.horizontalPadding + extraWidth <= organization.width)\n      return true;\n\n    var hDiff = 0;\n\n    // Adding to an existing row\n    if (organization.rowHeight[sri] < extraHeight) {\n      if (sri > 0)\n        hDiff = extraHeight + organization.verticalPadding - organization.rowHeight[sri];\n    }\n\n    var add_to_row_ratio;\n    if (organization.width - min >= extraWidth + organization.horizontalPadding) {\n      add_to_row_ratio = (organization.height + hDiff) / (min + extraWidth + organization.horizontalPadding);\n    } else {\n      add_to_row_ratio = (organization.height + hDiff) / organization.width;\n    }\n\n    // Adding a new row for this node\n    hDiff = extraHeight + organization.verticalPadding;\n    var add_new_row_ratio;\n    if (organization.width < extraWidth) {\n      add_new_row_ratio = (organization.height + hDiff) / extraWidth;\n    } else {\n      add_new_row_ratio = (organization.height + hDiff) / organization.width;\n    }\n\n    if (add_new_row_ratio < 1)\n      add_new_row_ratio = 1 / add_new_row_ratio;\n\n    if (add_to_row_ratio < 1)\n      add_to_row_ratio = 1 / add_to_row_ratio;\n\n    return add_to_row_ratio < add_new_row_ratio;\n  };\n\n\n//If moving the last node from the longest row and adding it to the last\n//row makes the bounding box smaller, do it.\n  instance.shiftToLastRow = function (organization) {\n    var longest = instance.getLongestRowIndex(organization);\n    var last = organization.rowWidth.length - 1;\n    var row = organization.rows[longest];\n    var node = row[row.length - 1];\n\n    var diff = node.width + organization.horizontalPadding;\n\n    // Check if there is enough space on the last row\n    if (organization.width - organization.rowWidth[last] > diff && longest != last) {\n      // Remove the last element of the longest row\n      row.splice(-1, 1);\n\n      // Push it to the last row\n      organization.rows[last].push(node);\n\n      organization.rowWidth[longest] = organization.rowWidth[longest] - diff;\n      organization.rowWidth[last] = organization.rowWidth[last] + diff;\n      organization.width = organization.rowWidth[instance.getLongestRowIndex(organization)];\n\n      // Update heights of the organization\n      var maxHeight = Number.MIN_VALUE;\n      for (var i = 0; i < row.length; i++) {\n        if (row[i].height > maxHeight)\n          maxHeight = row[i].height;\n      }\n      if (longest > 0)\n        maxHeight += organization.verticalPadding;\n\n      var prevTotal = organization.rowHeight[longest] + organization.rowHeight[last];\n\n      organization.rowHeight[longest] = maxHeight;\n      if (organization.rowHeight[last] < node.height + organization.verticalPadding)\n        organization.rowHeight[last] = node.height + organization.verticalPadding;\n\n      var finalTotal = organization.rowHeight[longest] + organization.rowHeight[last];\n      organization.height += (finalTotal - prevTotal);\n\n      instance.shiftToLastRow(organization);\n    }\n  };\n  \n  instance.preLayout = function() {\n    // Find zero degree nodes and create a compound for each level\n    var memberGroups = instance.groupZeroDegreeMembers();\n    // Tile and clear children of each compound\n    instance.tiledMemberPack = instance.clearCompounds();\n    // Separately tile and clear zero degree nodes for each level\n    instance.tiledZeroDegreeNodes = instance.clearZeroDegreeMembers(memberGroups);\n  };\n  \n  instance.postLayout = function() {\n    var nodes = instance.options.eles.nodes();\n    //fill the toBeTiled map\n    for (var i = 0; i < nodes.length; i++) {\n      instance.getToBeTiled(nodes[i]);\n    }\n\n    // Repopulate members\n    instance.repopulateZeroDegreeMembers(instance.tiledZeroDegreeNodes);\n\n    instance.repopulateCompounds(instance.tiledMemberPack);\n\n    instance.options.cy.nodes().updateCompoundBounds();\n  };\n};","var PointD = require('./PointD');\n\nfunction Transform(x, y) {\n  this.lworldOrgX = 0.0;\n  this.lworldOrgY = 0.0;\n  this.ldeviceOrgX = 0.0;\n  this.ldeviceOrgY = 0.0;\n  this.lworldExtX = 1.0;\n  this.lworldExtY = 1.0;\n  this.ldeviceExtX = 1.0;\n  this.ldeviceExtY = 1.0;\n}\n\nTransform.prototype.getWorldOrgX = function ()\n{\n  return this.lworldOrgX;\n}\n\nTransform.prototype.setWorldOrgX = function (wox)\n{\n  this.lworldOrgX = wox;\n}\n\nTransform.prototype.getWorldOrgY = function ()\n{\n  return this.lworldOrgY;\n}\n\nTransform.prototype.setWorldOrgY = function (woy)\n{\n  this.lworldOrgY = woy;\n}\n\nTransform.prototype.getWorldExtX = function ()\n{\n  return this.lworldExtX;\n}\n\nTransform.prototype.setWorldExtX = function (wex)\n{\n  this.lworldExtX = wex;\n}\n\nTransform.prototype.getWorldExtY = function ()\n{\n  return this.lworldExtY;\n}\n\nTransform.prototype.setWorldExtY = function (wey)\n{\n  this.lworldExtY = wey;\n}\n\n/* Device related */\n\nTransform.prototype.getDeviceOrgX = function ()\n{\n  return this.ldeviceOrgX;\n}\n\nTransform.prototype.setDeviceOrgX = function (dox)\n{\n  this.ldeviceOrgX = dox;\n}\n\nTransform.prototype.getDeviceOrgY = function ()\n{\n  return this.ldeviceOrgY;\n}\n\nTransform.prototype.setDeviceOrgY = function (doy)\n{\n  this.ldeviceOrgY = doy;\n}\n\nTransform.prototype.getDeviceExtX = function ()\n{\n  return this.ldeviceExtX;\n}\n\nTransform.prototype.setDeviceExtX = function (dex)\n{\n  this.ldeviceExtX = dex;\n}\n\nTransform.prototype.getDeviceExtY = function ()\n{\n  return this.ldeviceExtY;\n}\n\nTransform.prototype.setDeviceExtY = function (dey)\n{\n  this.ldeviceExtY = dey;\n}\n\nTransform.prototype.transformX = function (x)\n{\n  var xDevice = 0.0;\n  var worldExtX = this.lworldExtX;\n  if (worldExtX != 0.0)\n  {\n    xDevice = this.ldeviceOrgX +\n            ((x - this.lworldOrgX) * this.ldeviceExtX / worldExtX);\n  }\n\n  return xDevice;\n}\n\nTransform.prototype.transformY = function (y)\n{\n  var yDevice = 0.0;\n  var worldExtY = this.lworldExtY;\n  if (worldExtY != 0.0)\n  {\n    yDevice = this.ldeviceOrgY +\n            ((y - this.lworldOrgY) * this.ldeviceExtY / worldExtY);\n  }\n\n\n  return yDevice;\n}\n\nTransform.prototype.inverseTransformX = function (x)\n{\n  var xWorld = 0.0;\n  var deviceExtX = this.ldeviceExtX;\n  if (deviceExtX != 0.0)\n  {\n    xWorld = this.lworldOrgX +\n            ((x - this.ldeviceOrgX) * this.lworldExtX / deviceExtX);\n  }\n\n\n  return xWorld;\n}\n\nTransform.prototype.inverseTransformY = function (y)\n{\n  var yWorld = 0.0;\n  var deviceExtY = this.ldeviceExtY;\n  if (deviceExtY != 0.0)\n  {\n    yWorld = this.lworldOrgY +\n            ((y - this.ldeviceOrgY) * this.lworldExtY / deviceExtY);\n  }\n  return yWorld;\n}\n\nTransform.prototype.inverseTransformPoint = function (inPoint)\n{\n  var outPoint =\n          new PointD(this.inverseTransformX(inPoint.x),\n                  this.inverseTransformY(inPoint.y));\n  return outPoint;\n}\n\nmodule.exports = Transform;\n","function UniqueIDGeneretor() {\n}\n\nUniqueIDGeneretor.lastID = 0;\n\nUniqueIDGeneretor.createID = function (obj) {\n  if (UniqueIDGeneretor.isPrimitive(obj)) {\n    return obj;\n  }\n  if (obj.uniqueID != null) {\n    return obj.uniqueID;\n  }\n  obj.uniqueID = UniqueIDGeneretor.getString();\n  UniqueIDGeneretor.lastID++;\n  return obj.uniqueID;\n}\n\nUniqueIDGeneretor.getString = function (id) {\n  if (id == null)\n    id = UniqueIDGeneretor.lastID;\n  return \"Object#\" + id + \"\";\n}\n\nUniqueIDGeneretor.isPrimitive = function (arg) {\n  var type = typeof arg;\n  return arg == null || (type != \"object\" && type != \"function\");\n}\n\nmodule.exports = UniqueIDGeneretor;\n","'use strict';\n\nvar DimensionD = require('./DimensionD');\nvar HashMap = require('./HashMap');\nvar HashSet = require('./HashSet');\nvar IGeometry = require('./IGeometry');\nvar IMath = require('./IMath');\nvar Integer = require('./Integer');\nvar Point = require('./Point');\nvar PointD = require('./PointD');\nvar RandomSeed = require('./RandomSeed');\nvar RectangleD = require('./RectangleD');\nvar Transform = require('./Transform');\nvar UniqueIDGeneretor = require('./UniqueIDGeneretor');\nvar LGraphObject = require('./LGraphObject');\nvar LGraph = require('./LGraph');\nvar LEdge = require('./LEdge');\nvar LGraphManager = require('./LGraphManager');\nvar LNode = require('./LNode');\nvar Layout = require('./Layout');\nvar LayoutConstants = require('./LayoutConstants');\nvar FDLayout = require('./FDLayout');\nvar FDLayoutConstants = require('./FDLayoutConstants');\nvar FDLayoutEdge = require('./FDLayoutEdge');\nvar FDLayoutNode = require('./FDLayoutNode');\nvar CoSEConstants = require('./CoSEConstants');\nvar CoSEEdge = require('./CoSEEdge');\nvar CoSEGraph = require('./CoSEGraph');\nvar CoSEGraphManager = require('./CoSEGraphManager');\nvar CoSELayout = require('./CoSELayout');\nvar CoSENode = require('./CoSENode');\nvar TilingExtension = require('./TilingExtension');\n\nvar defaults = {\n  // Called on `layoutready`\n  ready: function () {\n  },\n  // Called on `layoutstop`\n  stop: function () {\n  },\n  // number of ticks per frame; higher is faster but more jerky\n  refresh: 30,\n  // Whether to fit the network view after when done\n  fit: true,\n  // Padding on fit\n  padding: 10,\n  // Padding for compounds\n  paddingCompound: 15,\n  // Whether to enable incremental mode\n  randomize: true,\n  // Node repulsion (non overlapping) multiplier\n  nodeRepulsion: 4500,\n  // Ideal edge (non nested) length\n  idealEdgeLength: 50,\n  // Divisor to compute edge forces\n  edgeElasticity: 0.45,\n  // Nesting factor (multiplier) to compute ideal edge length for nested edges\n  nestingFactor: 0.1,\n  // Gravity force (constant)\n  gravity: 0.25,\n  // Maximum number of iterations to perform\n  numIter: 2500,\n  // For enabling tiling\n  tile: true,\n  // Type of layout animation. The option set is {'during', 'end', false}\n  animate: 'end',\n  // Duration for animate:end\n  animationDuration: 500,\n  // Represents the amount of the vertical space to put between the zero degree members during the tiling operation(can also be a function)\n  tilingPaddingVertical: 10,\n  // Represents the amount of the horizontal space to put between the zero degree members during the tiling operation(can also be a function)\n  tilingPaddingHorizontal: 10,\n  // Gravity range (constant) for compounds\n  gravityRangeCompound: 1.5,\n  // Gravity force (constant) for compounds\n  gravityCompound: 1.0,\n  // Gravity range (constant)\n  gravityRange: 3.8\n};\n\nfunction extend(defaults, options) {\n  var obj = {};\n\n  for (var i in defaults) {\n    obj[i] = defaults[i];\n  }\n\n  for (var i in options) {\n    obj[i] = options[i];\n  }\n\n  return obj;\n};\n\nfunction _CoSELayout(_options) {\n  TilingExtension(this); // Extend this instance with tiling functions\n  this.options = extend(defaults, _options);\n  getUserOptions(this.options);\n}\n\nvar getUserOptions = function (options) {\n  if (options.nodeRepulsion != null)\n    CoSEConstants.DEFAULT_REPULSION_STRENGTH = FDLayoutConstants.DEFAULT_REPULSION_STRENGTH = options.nodeRepulsion;\n  if (options.idealEdgeLength != null)\n    CoSEConstants.DEFAULT_EDGE_LENGTH = FDLayoutConstants.DEFAULT_EDGE_LENGTH = options.idealEdgeLength;\n  if (options.edgeElasticity != null)\n    CoSEConstants.DEFAULT_SPRING_STRENGTH = FDLayoutConstants.DEFAULT_SPRING_STRENGTH = options.edgeElasticity;\n  if (options.nestingFactor != null)\n    CoSEConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR = FDLayoutConstants.PER_LEVEL_IDEAL_EDGE_LENGTH_FACTOR = options.nestingFactor;\n  if (options.gravity != null)\n    CoSEConstants.DEFAULT_GRAVITY_STRENGTH = FDLayoutConstants.DEFAULT_GRAVITY_STRENGTH = options.gravity;\n  if (options.numIter != null)\n    CoSEConstants.MAX_ITERATIONS = FDLayoutConstants.MAX_ITERATIONS = options.numIter;\n  if (options.paddingCompound != null)\n    CoSEConstants.DEFAULT_GRAPH_MARGIN = FDLayoutConstants.DEFAULT_GRAPH_MARGIN = LayoutConstants.DEFAULT_GRAPH_MARGIN = options.paddingCompound;\n  if (options.gravityRange != null)\n    CoSEConstants.DEFAULT_GRAVITY_RANGE_FACTOR = FDLayoutConstants.DEFAULT_GRAVITY_RANGE_FACTOR = options.gravityRange;\n  if(options.gravityCompound != null)\n    CoSEConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_STRENGTH = options.gravityCompound;\n  if(options.gravityRangeCompound != null)\n    CoSEConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR = FDLayoutConstants.DEFAULT_COMPOUND_GRAVITY_RANGE_FACTOR = options.gravityRangeCompound;\n\n  CoSEConstants.DEFAULT_INCREMENTAL = FDLayoutConstants.DEFAULT_INCREMENTAL = LayoutConstants.DEFAULT_INCREMENTAL =\n          !(options.randomize);\n  CoSEConstants.ANIMATE = FDLayoutConstants.ANIMATE = options.animate;\n};\n\n_CoSELayout.prototype.run = function () {\n  var ready;\n  var frameId;\n  var options = this.options;\n  var idToLNode = this.idToLNode = {};\n  var layout = this.layout = new CoSELayout();\n  var self = this;\n  \n  this.cy = this.options.cy;\n\n  this.cy.trigger({ type: 'layoutstart', layout: this });\n\n  var gm = layout.newGraphManager();\n  this.gm = gm;\n\n  var nodes = this.options.eles.nodes();\n  var edges = this.options.eles.edges();\n\n  this.root = gm.addRoot();\n\n  if (!this.options.tile) {\n    this.processChildrenList(this.root, this.getTopMostNodes(nodes), layout);\n  }\n  else {\n    this.preLayout();\n  }\n\n\n  for (var i = 0; i < edges.length; i++) {\n    var edge = edges[i];\n    var sourceNode = this.idToLNode[edge.data(\"source\")];\n    var targetNode = this.idToLNode[edge.data(\"target\")];\n    var e1 = gm.add(layout.newEdge(), sourceNode, targetNode);\n    e1.id = edge.id();\n  }\n  \n   var getPositions = function(ele, i){\n    if(typeof ele === \"number\") {\n      ele = i;\n    }\n    var theId = ele.data('id');\n    var lNode = self.idToLNode[theId];\n\n    return {\n      x: lNode.getRect().getCenterX(),\n      y: lNode.getRect().getCenterY()\n    };\n  };\n  \n  /*\n   * Reposition nodes in iterations animatedly\n   */\n  var iterateAnimated = function () {\n    // Thigs to perform after nodes are repositioned on screen\n    var afterReposition = function() {\n      if (options.fit) {\n        options.cy.fit(options.eles.nodes(), options.padding);\n      }\n\n      if (!ready) {\n        ready = true;\n        self.cy.one('layoutready', options.ready);\n        self.cy.trigger({type: 'layoutready', layout: self});\n      }\n    };\n    \n    var ticksPerFrame = self.options.refresh;\n    var isDone;\n\n    for( var i = 0; i < ticksPerFrame && !isDone; i++ ){\n      isDone = self.layout.tick();\n    }\n    \n    // If layout is done\n    if (isDone) {\n      if (self.options.tile) {\n        self.postLayout();\n      }\n      self.options.eles.nodes().positions(getPositions);\n      \n      afterReposition();\n      \n      // trigger layoutstop when the layout stops (e.g. finishes)\n      self.cy.one('layoutstop', self.options.stop);\n      self.cy.trigger('layoutstop');\n      self.cy.trigger({ type: 'layoutstop', layout: self });\n\n      if (frameId) {\n        cancelAnimationFrame(frameId);\n      }\n      \n      self.options.eles.nodes().removeScratch('coseBilkent');\n      ready = false;\n      return;\n    }\n    \n    var animationData = self.layout.getPositionsData(); // Get positions of layout nodes note that all nodes may not be layout nodes because of tiling\n    // Position nodes, for the nodes who are not passed to layout because of tiling return the position of their dummy compound\n    options.eles.nodes().positions(function (ele, i) {\n      if (typeof ele === \"number\") {\n        ele = i;\n      }\n      if (ele.scratch('coseBilkent') && ele.scratch('coseBilkent').dummy_parent_id) {\n        var dummyParent = ele.scratch('coseBilkent').dummy_parent_id;\n        return {\n          x: dummyParent.x,\n          y: dummyParent.y\n        };\n      }\n      var theId = ele.data('id');\n      var pNode = animationData[theId];\n      var temp = ele;\n      while (pNode == null) {\n        temp = temp.parent()[0];\n        pNode = animationData[temp.id()];\n        animationData[theId] = pNode;\n      }\n      return {\n        x: pNode.x,\n        y: pNode.y\n      };\n    });\n\n    afterReposition();\n\n    frameId = requestAnimationFrame(iterateAnimated);\n  };\n  \n  /*\n  * Listen 'layoutstarted' event and start animated iteration if animate option is 'during'\n  */\n  layout.addListener('layoutstarted', function () {\n    if (self.options.animate === 'during') {\n      frameId = requestAnimationFrame(iterateAnimated);\n    }\n  });\n  \n  layout.runLayout(); // Run cose layout\n  \n  /*\n   * If animate option is not 'during' ('end' or false) perform these here (If it is 'during' similar things are already performed)\n   */\n  if(this.options.animate !== 'during'){\n    setTimeout(function() {\n      if (self.options.tile) {\n        self.postLayout();\n      }\n      self.options.eles.nodes().not(\":parent\").layoutPositions(self, self.options, getPositions); // Use layout positions to reposition the nodes it considers the options parameter\n      self.options.eles.nodes().removeScratch('coseBilkent');\n      ready = false;\n    }, 0);\n    \n  }\n\n  return this; // chaining\n};\n\n//Get the top most ones of a list of nodes\n_CoSELayout.prototype.getTopMostNodes = function(nodes) {\n  var nodesMap = {};\n  for (var i = 0; i < nodes.length; i++) {\n      nodesMap[nodes[i].id()] = true;\n  }\n  var roots = nodes.filter(function (ele, i) {\n      if(typeof ele === \"number\") {\n        ele = i;\n      }\n      var parent = ele.parent()[0];\n      while(parent != null){\n        if(nodesMap[parent.id()]){\n          return false;\n        }\n        parent = parent.parent()[0];\n      }\n      return true;\n  });\n\n  return roots;\n};\n\n_CoSELayout.prototype.processChildrenList = function (parent, children, layout) {\n  var size = children.length;\n  for (var i = 0; i < size; i++) {\n    var theChild = children[i];\n    this.options.eles.nodes().length;\n    var children_of_children = theChild.children();\n    var theNode;\n\n    if (theChild.width() != null\n            && theChild.height() != null) {\n      theNode = parent.add(new CoSENode(layout.graphManager,\n              new PointD(theChild.position('x'), theChild.position('y')),\n              new DimensionD(parseFloat(theChild.width()),\n                      parseFloat(theChild.height()))));\n    }\n    else {\n      theNode = parent.add(new CoSENode(this.graphManager));\n    }\n    theNode.id = theChild.data(\"id\");\n    this.idToLNode[theChild.data(\"id\")] = theNode;\n\n    if (isNaN(theNode.rect.x)) {\n      theNode.rect.x = 0;\n    }\n\n    if (isNaN(theNode.rect.y)) {\n      theNode.rect.y = 0;\n    }\n\n    if (children_of_children != null && children_of_children.length > 0) {\n      var theNewGraph;\n      theNewGraph = layout.getGraphManager().add(layout.newGraph(), theNode);\n      this.processChildrenList(theNewGraph, children_of_children, layout);\n    }\n  }\n};\n\n/**\n * @brief : called on continuous layouts to stop them before they finish\n */\n_CoSELayout.prototype.stop = function () {\n  this.stopped = true;\n  \n  this.trigger('layoutstop');\n\n  return this; // chaining\n};\n\nmodule.exports = function get(cytoscape) {\n  return _CoSELayout;\n};\n","'use strict';\n\n// registers the extension on a cytoscape lib ref\nvar getLayout = require('./Layout');\n\nvar register = function( cytoscape ){\n  var Layout = getLayout( cytoscape );\n\n  cytoscape('layout', 'cose-bilkent', Layout);\n};\n\n// auto reg for globals\nif( typeof cytoscape !== 'undefined' ){\n  register( cytoscape );\n}\n\nmodule.exports = register;\n"]}