leaflet-mapbox-vector-tile/lib/jsts/jsts.js

A Leaflet Plugin that renders Mapbox Vector Tiles on HTML5 Canvas.

/* The JSTS Topology Suite is a collection of JavaScript classes that
implement the fundamental operations required to validate a given
geo-spatial data set to a known topological specification.

Copyright (C) 2011 The Authors

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
jsts={version:'0.13.4',algorithm:{distance:{},locate:{}},error:{},geom:{util:{}},geomgraph:{index:{}},index:{bintree:{},chain:{},kdtree:{},quadtree:{},strtree:{}},io:{},noding:{snapround:{}},operation:{buffer:{},distance:{},overlay:{snap:{}},polygonize:{},relate:{},union:{},valid:{}},planargraph:{},simplify:{},triangulate:{quadedge:{}},util:{}};if(typeof String.prototype.trim!=='function'){String.prototype.trim=function(){return this.replace(/^\s+|\s+$/g,'');};}
jsts.abstractFunc=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.error={};jsts.error.IllegalArgumentError=function(message){this.name='IllegalArgumentError';this.message=message;};jsts.error.IllegalArgumentError.prototype=new Error();jsts.error.TopologyError=function(message,pt){this.name='TopologyError';this.message=pt?message+' [ '+pt+' ]':message;};jsts.error.TopologyError.prototype=new Error();jsts.error.AbstractMethodInvocationError=function(){this.name='AbstractMethodInvocationError';this.message='Abstract method called, should be implemented in subclass.';};jsts.error.AbstractMethodInvocationError.prototype=new Error();jsts.error.NotImplementedError=function(){this.name='NotImplementedError';this.message='This method has not yet been implemented.';};jsts.error.NotImplementedError.prototype=new Error();jsts.error.NotRepresentableError=function(message){this.name='NotRepresentableError';this.message=message;};jsts.error.NotRepresentableError.prototype=new Error();jsts.error.LocateFailureError=function(message){this.name='LocateFailureError';this.message=message;};jsts.error.LocateFailureError.prototype=new Error();if(typeof module!=="undefined")module.exports=jsts;jsts.geom.GeometryFilter=function(){};jsts.geom.GeometryFilter.prototype.filter=function(geom){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.util.PolygonExtracter=function(comps){this.comps=comps;};jsts.geom.util.PolygonExtracter.prototype=new jsts.geom.GeometryFilter();jsts.geom.util.PolygonExtracter.prototype.comps=null;jsts.geom.util.PolygonExtracter.getPolygons=function(geom,list){if(list===undefined){list=[];}
if(geom instanceof jsts.geom.Polygon){list.push(geom);}else if(geom instanceof jsts.geom.GeometryCollection){geom.apply(new jsts.geom.util.PolygonExtracter(list));}
return list;};jsts.geom.util.PolygonExtracter.prototype.filter=function(geom){if(geom instanceof jsts.geom.Polygon)
this.comps.push(geom);};jsts.io.WKTParser=function(geometryFactory){this.geometryFactory=geometryFactory||new jsts.geom.GeometryFactory();this.regExes={'typeStr':/^\s*(\w+)\s*\(\s*(.*)\s*\)\s*$/,'emptyTypeStr':/^\s*(\w+)\s*EMPTY\s*$/,'spaces':/\s+/,'parenComma':/\)\s*,\s*\(/,'doubleParenComma':/\)\s*\)\s*,\s*\(\s*\(/,'trimParens':/^\s*\(?(.*?)\)?\s*$/};};jsts.io.WKTParser.prototype.read=function(wkt){var geometry,type,str;wkt=wkt.replace(/[\n\r]/g,' ');var matches=this.regExes.typeStr.exec(wkt);if(wkt.search('EMPTY')!==-1){matches=this.regExes.emptyTypeStr.exec(wkt);matches[2]=undefined;}
if(matches){type=matches[1].toLowerCase();str=matches[2];if(this.parse[type]){geometry=this.parse[type].apply(this,[str]);}}
if(geometry===undefined)
throw new Error('Could not parse WKT '+wkt);return geometry;};jsts.io.WKTParser.prototype.write=function(geometry){return this.extractGeometry(geometry);};jsts.io.WKTParser.prototype.extractGeometry=function(geometry){var type=geometry.CLASS_NAME.split('.')[2].toLowerCase();if(!this.extract[type]){return null;}
var wktType=type.toUpperCase();var data;if(geometry.isEmpty()){data=wktType+' EMPTY';}else{data=wktType+'('+this.extract[type].apply(this,[geometry])+')';}
return data;};jsts.io.WKTParser.prototype.extract={'coordinate':function(coordinate){return coordinate.x+' '+coordinate.y;},'point':function(point){return point.coordinate.x+' '+point.coordinate.y;},'multipoint':function(multipoint){var array=[];for(var i=0,len=multipoint.geometries.length;i<len;++i){array.push('('+
this.extract.point.apply(this,[multipoint.geometries[i]])+')');}
return array.join(',');},'linestring':function(linestring){var array=[];for(var i=0,len=linestring.points.length;i<len;++i){array.push(this.extract.coordinate.apply(this,[linestring.points[i]]));}
return array.join(',');},'multilinestring':function(multilinestring){var array=[];for(var i=0,len=multilinestring.geometries.length;i<len;++i){array.push('('+
this.extract.linestring.apply(this,[multilinestring.geometries[i]])+')');}
return array.join(',');},'polygon':function(polygon){var array=[];array.push('('+this.extract.linestring.apply(this,[polygon.shell])+')');for(var i=0,len=polygon.holes.length;i<len;++i){array.push('('+this.extract.linestring.apply(this,[polygon.holes[i]])+')');}
return array.join(',');},'multipolygon':function(multipolygon){var array=[];for(var i=0,len=multipolygon.geometries.length;i<len;++i){array.push('('+this.extract.polygon.apply(this,[multipolygon.geometries[i]])+')');}
return array.join(',');},'geometrycollection':function(collection){var array=[];for(var i=0,len=collection.geometries.length;i<len;++i){array.push(this.extractGeometry.apply(this,[collection.geometries[i]]));}
return array.join(',');}};jsts.io.WKTParser.prototype.parse={'point':function(str){if(str===undefined){return this.geometryFactory.createPoint(null);}
var coords=str.trim().split(this.regExes.spaces);return this.geometryFactory.createPoint(new jsts.geom.Coordinate(coords[0],coords[1]));},'multipoint':function(str){if(str===undefined){return this.geometryFactory.createMultiPoint(null);}
var point;var points=str.trim().split(',');var components=[];for(var i=0,len=points.length;i<len;++i){point=points[i].replace(this.regExes.trimParens,'$1');components.push(this.parse.point.apply(this,[point]));}
return this.geometryFactory.createMultiPoint(components);},'linestring':function(str){if(str===undefined){return this.geometryFactory.createLineString(null);}
var points=str.trim().split(',');var components=[];var coords;for(var i=0,len=points.length;i<len;++i){coords=points[i].trim().split(this.regExes.spaces);components.push(new jsts.geom.Coordinate(coords[0],coords[1]));}
return this.geometryFactory.createLineString(components);},'linearring':function(str){if(str===undefined){return this.geometryFactory.createLinearRing(null);}
var points=str.trim().split(',');var components=[];var coords;for(var i=0,len=points.length;i<len;++i){coords=points[i].trim().split(this.regExes.spaces);components.push(new jsts.geom.Coordinate(coords[0],coords[1]));}
return this.geometryFactory.createLinearRing(components);},'multilinestring':function(str){if(str===undefined){return this.geometryFactory.createMultiLineString(null);}
var line;var lines=str.trim().split(this.regExes.parenComma);var components=[];for(var i=0,len=lines.length;i<len;++i){line=lines[i].replace(this.regExes.trimParens,'$1');components.push(this.parse.linestring.apply(this,[line]));}
return this.geometryFactory.createMultiLineString(components);},'polygon':function(str){if(str===undefined){return this.geometryFactory.createPolygon(null);}
var ring,linestring,linearring;var rings=str.trim().split(this.regExes.parenComma);var shell;var holes=[];for(var i=0,len=rings.length;i<len;++i){ring=rings[i].replace(this.regExes.trimParens,'$1');linestring=this.parse.linestring.apply(this,[ring]);linearring=this.geometryFactory.createLinearRing(linestring.points);if(i===0){shell=linearring;}else{holes.push(linearring);}}
return this.geometryFactory.createPolygon(shell,holes);},'multipolygon':function(str){if(str===undefined){return this.geometryFactory.createMultiPolygon(null);}
var polygon;var polygons=str.trim().split(this.regExes.doubleParenComma);var components=[];for(var i=0,len=polygons.length;i<len;++i){polygon=polygons[i].replace(this.regExes.trimParens,'$1');components.push(this.parse.polygon.apply(this,[polygon]));}
return this.geometryFactory.createMultiPolygon(components);},'geometrycollection':function(str){if(str===undefined){return this.geometryFactory.createGeometryCollection(null);}
str=str.replace(/,\s*([A-Za-z])/g,'|$1');var wktArray=str.trim().split('|');var components=[];for(var i=0,len=wktArray.length;i<len;++i){components.push(jsts.io.WKTParser.prototype.read.apply(this,[wktArray[i]]));}
return this.geometryFactory.createGeometryCollection(components);}};jsts.index.ItemVisitor=function(){};jsts.index.ItemVisitor.prototype.visitItem=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.algorithm.CGAlgorithms=function(){};jsts.algorithm.CGAlgorithms.CLOCKWISE=-1;jsts.algorithm.CGAlgorithms.RIGHT=jsts.algorithm.CGAlgorithms.CLOCKWISE;jsts.algorithm.CGAlgorithms.COUNTERCLOCKWISE=1;jsts.algorithm.CGAlgorithms.LEFT=jsts.algorithm.CGAlgorithms.COUNTERCLOCKWISE;jsts.algorithm.CGAlgorithms.COLLINEAR=0;jsts.algorithm.CGAlgorithms.STRAIGHT=jsts.algorithm.CGAlgorithms.COLLINEAR;jsts.algorithm.CGAlgorithms.orientationIndex=function(p1,p2,q){var dx1,dy1,dx2,dy2;dx1=p2.x-p1.x;dy1=p2.y-p1.y;dx2=q.x-p2.x;dy2=q.y-p2.y;return jsts.algorithm.RobustDeterminant.signOfDet2x2(dx1,dy1,dx2,dy2);};jsts.algorithm.CGAlgorithms.isPointInRing=function(p,ring){return jsts.algorithm.CGAlgorithms.locatePointInRing(p,ring)!==jsts.geom.Location.EXTERIOR;};jsts.algorithm.CGAlgorithms.locatePointInRing=function(p,ring){return jsts.algorithm.RayCrossingCounter.locatePointInRing(p,ring);};jsts.algorithm.CGAlgorithms.isOnLine=function(p,pt){var lineIntersector,i,il,p0,p1;lineIntersector=new jsts.algorithm.RobustLineIntersector();for(i=1,il=pt.length;i<il;i++){p0=pt[i-1];p1=pt[i];lineIntersector.computeIntersection(p,p0,p1);if(lineIntersector.hasIntersection()){return true;}}
return false;};jsts.algorithm.CGAlgorithms.isCCW=function(ring){var nPts,hiPt,hiIndex,p,iPrev,iNext,prev,next,i,disc,isCCW;nPts=ring.length-1;if(nPts<3){throw new jsts.IllegalArgumentError('Ring has fewer than 3 points, so orientation cannot be determined');}
hiPt=ring[0];hiIndex=0;i=1;for(i;i<=nPts;i++){p=ring[i];if(p.y>hiPt.y){hiPt=p;hiIndex=i;}}
iPrev=hiIndex;do{iPrev=iPrev-1;if(iPrev<0){iPrev=nPts;}}while(ring[iPrev].equals2D(hiPt)&&iPrev!==hiIndex);iNext=hiIndex;do{iNext=(iNext+1)%nPts;}while(ring[iNext].equals2D(hiPt)&&iNext!==hiIndex);prev=ring[iPrev];next=ring[iNext];if(prev.equals2D(hiPt)||next.equals2D(hiPt)||prev.equals2D(next)){return false;}
disc=jsts.algorithm.CGAlgorithms.computeOrientation(prev,hiPt,next);isCCW=false;if(disc===0){isCCW=(prev.x>next.x);}else{isCCW=(disc>0);}
return isCCW;};jsts.algorithm.CGAlgorithms.computeOrientation=function(p1,p2,q){return jsts.algorithm.CGAlgorithms.orientationIndex(p1,p2,q);};jsts.algorithm.CGAlgorithms.distancePointLine=function(p,A,B){if(!(A instanceof jsts.geom.Coordinate)){jsts.algorithm.CGAlgorithms.distancePointLine2.apply(this,arguments);}
if(A.x===B.x&&A.y===B.y){return p.distance(A);}
var r,s;r=((p.x-A.x)*(B.x-A.x)+(p.y-A.y)*(B.y-A.y))/((B.x-A.x)*(B.x-A.x)+(B.y-A.y)*(B.y-A.y));if(r<=0.0){return p.distance(A);}
if(r>=1.0){return p.distance(B);}
s=((A.y-p.y)*(B.x-A.x)-(A.x-p.x)*(B.y-A.y))/((B.x-A.x)*(B.x-A.x)+(B.y-A.y)*(B.y-A.y));return Math.abs(s)*Math.sqrt(((B.x-A.x)*(B.x-A.x)+(B.y-A.y)*(B.y-A.y)));};jsts.algorithm.CGAlgorithms.distancePointLinePerpendicular=function(p,A,B){var s=((A.y-p.y)*(B.x-A.x)-(A.x-p.x)*(B.y-A.y))/((B.x-A.x)*(B.x-A.x)+(B.y-A.y)*(B.y-A.y));return Math.abs(s)*Math.sqrt(((B.x-A.x)*(B.x-A.x)+(B.y-A.y)*(B.y-A.y)));};jsts.algorithm.CGAlgorithms.distancePointLine2=function(p,line){var minDistance,i,il,dist;if(line.length===0){throw new jsts.error.IllegalArgumentError('Line array must contain at least one vertex');}
minDistance=p.distance(line[0]);for(i=0,il=line.length-1;i<il;i++){dist=jsts.algorithm.CGAlgorithms.distancePointLine(p,line[i],line[i+1]);if(dist<minDistance){minDistance=dist;}}
return minDistance;};jsts.algorithm.CGAlgorithms.distanceLineLine=function(A,B,C,D){if(A.equals(B)){return jsts.algorithm.CGAlgorithms.distancePointLine(A,C,D);}
if(C.equals(D)){return jsts.algorithm.CGAlgorithms.distancePointLine(D,A,B);}
var r_top,r_bot,s_top,s_bot,s,r;r_top=(A.y-C.y)*(D.x-C.x)-(A.x-C.x)*(D.y-C.y);r_bot=(B.x-A.x)*(D.y-C.y)-(B.y-A.y)*(D.x-C.x);s_top=(A.y-C.y)*(B.x-A.x)-(A.x-C.x)*(B.y-A.y);s_bot=(B.x-A.x)*(D.y-C.y)-(B.y-A.y)*(D.x-C.x);if((r_bot===0)||(s_bot===0)){return Math.min(jsts.algorithm.CGAlgorithms.distancePointLine(A,C,D),Math.min(jsts.algorithm.CGAlgorithms.distancePointLine(B,C,D),Math.min(jsts.algorithm.CGAlgorithms.distancePointLine(C,A,B),jsts.algorithm.CGAlgorithms.distancePointLine(D,A,B))));}
s=s_top/s_bot;r=r_top/r_bot;if((r<0)||(r>1)||(s<0)||(s>1)){return Math.min(jsts.algorithm.CGAlgorithms.distancePointLine(A,C,D),Math.min(jsts.algorithm.CGAlgorithms.distancePointLine(B,C,D),Math.min(jsts.algorithm.CGAlgorithms.distancePointLine(C,A,B),jsts.algorithm.CGAlgorithms.distancePointLine(D,A,B))));}
return 0.0;};jsts.algorithm.CGAlgorithms.signedArea=function(ring){if(ring.length<3){return 0.0;}
var sum,i,il,bx,by,cx,cy;sum=0.0;for(i=0,il=ring.length-1;i<il;i++){bx=ring[i].x;by=ring[i].y;cx=ring[i+1].x;cy=ring[i+1].y;sum+=(bx+cx)*(cy-by);}
return-sum/2.0;};jsts.algorithm.CGAlgorithms.signedArea=function(ring){var n,sum,p,bx,by,i,cx,cy;n=ring.length;if(n<3){return 0.0;}
sum=0.0;p=ring[0];bx=p.x;by=p.y;for(i=1;i<n;i++){p=ring[i];cx=p.x;cy=p.y;sum+=(bx+cx)*(cy-by);bx=cx;by=cy;}
return-sum/2.0;};jsts.algorithm.CGAlgorithms.computeLength=function(pts){var n=pts.length,len,x0,y0,x1,y1,dx,dy,p,i,il;if(n<=1){return 0.0;}
len=0.0;p=pts[0];x0=p.x;y0=p.y;i=1,il=n;for(i;i<n;i++){p=pts[i];x1=p.x;y1=p.y;dx=x1-x0;dy=y1-y0;len+=Math.sqrt(dx*dx+dy*dy);x0=x1;y0=y1;}
return len;};jsts.algorithm.CGAlgorithms.length=function(){};jsts.algorithm.Angle=function(){};jsts.algorithm.Angle.PI_TIMES_2=2.0*Math.PI;jsts.algorithm.Angle.PI_OVER_2=Math.PI/2.0;jsts.algorithm.Angle.PI_OVER_4=Math.PI/4.0;jsts.algorithm.Angle.COUNTERCLOCKWISE=jsts.algorithm.CGAlgorithms.prototype.COUNTERCLOCKWISE;jsts.algorithm.Angle.CLOCKWISE=jsts.algorithm.CGAlgorithms.prototype.CLOCKWISE;jsts.algorithm.Angle.NONE=jsts.algorithm.CGAlgorithms.prototype.COLLINEAR;jsts.algorithm.Angle.toDegrees=function(radians){return(radians*180)/Math.PI;};jsts.algorithm.Angle.toRadians=function(angleDegrees){return(angleDegrees*Math.PI)/180.0;};jsts.algorithm.Angle.angle=function(){if(arguments.length===1){return jsts.algorithm.Angle.angleFromOrigo(arguments[0]);}else{return jsts.algorithm.Angle.angleBetweenCoords(arguments[0],arguments[1]);}};jsts.algorithm.Angle.angleBetweenCoords=function(p0,p1){var dx,dy;dx=p1.x-p0.x;dy=p1.y-p0.y;return Math.atan2(dy,dx);};jsts.algorithm.Angle.angleFromOrigo=function(p){return Math.atan2(p.y,p.x);};jsts.algorithm.Angle.isAcute=function(p0,p1,p2){var dx0,dy0,dx1,dy1,dotprod;dx0=p0.x-p1.x;dy0=p0.y-p1.y;dx1=p2.x-p1.x;dy1=p2.y-p1.y;dotprod=dx0*dx1+dy0*dy1;return dotprod>0;};jsts.algorithm.Angle.isObtuse=function(p0,p1,p2){var dx0,dy0,dx1,dy1,dotprod;dx0=p0.x-p1.x;dy0=p0.y-p1.y;dx1=p2.x-p1.x;dy1=p2.y-p1.y;dotprod=dx0*dx1+dy0*dy1;return dotprod<0;};jsts.algorithm.Angle.angleBetween=function(tip1,tail,tip2){var a1,a2;a1=jsts.algorithm.Angle.angle(tail,tip1);a2=jsts.algorithm.Angle.angle(tail,tip2);return jsts.algorithm.Angle.diff(a1,a2);};jsts.algorithm.Angle.angleBetweenOriented=function(tip1,tail,tip2){var a1,a2,angDel;a1=jsts.algorithm.Angle.angle(tail,tip1);a2=jsts.algorithm.Angle.angle(tail,tip2);angDel=a2-a1;if(angDel<=-Math.PI){return angDel+jsts.algorithm.Angle.PI_TIMES_2;}
if(angDel>Math.PI){return angDel-jsts.algorithm.Angle.PI_TIMES_2;}
return angDel;};jsts.algorithm.Angle.interiorAngle=function(p0,p1,p2){var anglePrev,angleNext;anglePrev=jsts.algorithm.Angle.angle(p1,p0);angleNext=jsts.algorithm.Angle.angle(p1,p2);return Math.abs(angleNext-anglePrev);};jsts.algorithm.Angle.getTurn=function(ang1,ang2){var crossproduct=Math.sin(ang2-ang1);if(crossproduct>0){return jsts.algorithm.Angle.COUNTERCLOCKWISE;}
if(crossproduct<0){return jsts.algorithm.Angle.CLOCKWISE;}
return jsts.algorithm.Angle.NONE;};jsts.algorithm.Angle.normalize=function(angle){while(angle>Math.PI){angle-=jsts.algorithm.Angle.PI_TIMES_2;}
while(angle<=-Math.PI){angle+=jsts.algorithm.Angle.PI_TIMES_2;}
return angle;};jsts.algorithm.Angle.normalizePositive=function(angle){if(angle<0.0){while(angle<0.0){angle+=jsts.algorithm.Angle.PI_TIMES_2;}
if(angle>=jsts.algorithm.Angle.PI_TIMES_2){angle=0.0;}}
else{while(angle>=jsts.algorithm.Angle.PI_TIMES_2){angle-=jsts.algorithm.Angle.PI_TIMES_2;}
if(angle<0.0){angle=0.0;}}
return angle;};jsts.algorithm.Angle.diff=function(ang1,ang2){var delAngle;if(ang1<ang2){delAngle=ang2-ang1;}else{delAngle=ang1-ang2;}
if(delAngle>Math.PI){delAngle=(2*Math.PI)-delAngle;}
return delAngle;};jsts.geom.GeometryComponentFilter=function(){};jsts.geom.GeometryComponentFilter.prototype.filter=function(geom){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.util.LinearComponentExtracter=function(lines,isForcedToLineString){this.lines=lines;this.isForcedToLineString=isForcedToLineString;};jsts.geom.util.LinearComponentExtracter.prototype=new jsts.geom.GeometryComponentFilter();jsts.geom.util.LinearComponentExtracter.prototype.lines=null;jsts.geom.util.LinearComponentExtracter.prototype.isForcedToLineString=false;jsts.geom.util.LinearComponentExtracter.getLines=function(geoms,lines){if(arguments.length==1){return jsts.geom.util.LinearComponentExtracter.getLines5.apply(this,arguments);}
else if(arguments.length==2&&typeof lines==='boolean'){return jsts.geom.util.LinearComponentExtracter.getLines6.apply(this,arguments);}
else if(arguments.length==2&&geoms instanceof jsts.geom.Geometry){return jsts.geom.util.LinearComponentExtracter.getLines3.apply(this,arguments);}
else if(arguments.length==3&&geoms instanceof jsts.geom.Geometry){return jsts.geom.util.LinearComponentExtracter.getLines4.apply(this,arguments);}
else if(arguments.length==3){return jsts.geom.util.LinearComponentExtracter.getLines2.apply(this,arguments);}
for(var i=0;i<geoms.length;i++){var g=geoms[i];jsts.geom.util.LinearComponentExtracter.getLines3(g,lines);}
return lines;};jsts.geom.util.LinearComponentExtracter.getLines2=function(geoms,lines,forceToLineString){for(var i=0;i<geoms.length;i++){var g=geoms[i];jsts.geom.util.LinearComponentExtracter.getLines4(g,lines,forceToLineString);}
return lines;};jsts.geom.util.LinearComponentExtracter.getLines3=function(geom,lines){if(geom instanceof LineString){lines.add(geom);}else{geom.apply(new jsts.geom.util.LinearComponentExtracter(lines));}
return lines;};jsts.geom.util.LinearComponentExtracter.getLines4=function(geom,lines,forceToLineString){geom.apply(new jsts.geom.util.LinearComponentExtracter(lines,forceToLineString));return lines;};jsts.geom.util.LinearComponentExtracter.getLines5=function(geom){return jsts.geom.util.LinearComponentExtracter.getLines6(geom,false);};jsts.geom.util.LinearComponentExtracter.getLines6=function(geom,forceToLineString){var lines=[];geom.apply(new jsts.geom.util.LinearComponentExtracter(lines,forceToLineString));return lines;};jsts.geom.util.LinearComponentExtracter.prototype.setForceToLineString=function(isForcedToLineString){this.isForcedToLineString=isForcedToLineString;};jsts.geom.util.LinearComponentExtracter.prototype.filter=function(geom){if(this.isForcedToLineString&&geom instanceof jsts.geom.LinearRing){var line=geom.getFactory().createLineString(geom.getCoordinateSequence());this.lines.push(line);return;}
if(geom instanceof jsts.geom.LineString||geom instanceof jsts.geom.LinearRing)
this.lines.push(geom);};jsts.geom.Location=function(){};jsts.geom.Location.INTERIOR=0;jsts.geom.Location.BOUNDARY=1;jsts.geom.Location.EXTERIOR=2;jsts.geom.Location.NONE=-1;jsts.geom.Location.toLocationSymbol=function(locationValue){switch(locationValue){case jsts.geom.Location.EXTERIOR:return'e';case jsts.geom.Location.BOUNDARY:return'b';case jsts.geom.Location.INTERIOR:return'i';case jsts.geom.Location.NONE:return'-';}
throw new jsts.IllegalArgumentError('Unknown location value: '+
locationValue);};(function(){jsts.io.GeoJSONReader=function(geometryFactory){this.geometryFactory=geometryFactory||new jsts.geom.GeometryFactory();this.precisionModel=this.geometryFactory.getPrecisionModel();this.parser=new jsts.io.GeoJSONParser(this.geometryFactory);};jsts.io.GeoJSONReader.prototype.read=function(geoJson){var geometry=this.parser.read(geoJson);if(this.precisionModel.getType()===jsts.geom.PrecisionModel.FIXED){this.reducePrecision(geometry);}
return geometry;};jsts.io.GeoJSONReader.prototype.reducePrecision=function(geometry){var i,len;if(geometry.coordinate){this.precisionModel.makePrecise(geometry.coordinate);}else if(geometry.points){for(i=0,len=geometry.points.length;i<len;i++){this.precisionModel.makePrecise(geometry.points[i]);}}else if(geometry.geometries){for(i=0,len=geometry.geometries.length;i<len;i++){this.reducePrecision(geometry.geometries[i]);}}};})();jsts.geom.Geometry=function(factory){this.factory=factory;};jsts.geom.Geometry.prototype.envelope=null;jsts.geom.Geometry.prototype.factory=null;jsts.geom.Geometry.prototype.getGeometryType=function(){return'Geometry';};jsts.geom.Geometry.hasNonEmptyElements=function(geometries){var i;for(i=0;i<geometries.length;i++){if(!geometries[i].isEmpty()){return true;}}
return false;};jsts.geom.Geometry.hasNullElements=function(array){var i;for(i=0;i<array.length;i++){if(array[i]===null){return true;}}
return false;};jsts.geom.Geometry.prototype.getFactory=function(){if(this.factory===null||this.factory===undefined){this.factory=new jsts.geom.GeometryFactory();}
return this.factory;};jsts.geom.Geometry.prototype.getNumGeometries=function(){return 1;};jsts.geom.Geometry.prototype.getGeometryN=function(n){return this;};jsts.geom.Geometry.prototype.getPrecisionModel=function(){return this.getFactory().getPrecisionModel();};jsts.geom.Geometry.prototype.getCoordinate=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.getCoordinates=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.getNumPoints=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.isSimple=function(){this.checkNotGeometryCollection(this);var op=new jsts.operation.IsSimpleOp(this);return op.isSimple();};jsts.geom.Geometry.prototype.isValid=function(){var isValidOp=new jsts.operation.valid.IsValidOp(this);return isValidOp.isValid();};jsts.geom.Geometry.prototype.isEmpty=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.distance=function(g){return jsts.operation.distance.DistanceOp.distance(this,g);};jsts.geom.Geometry.prototype.isWithinDistance=function(geom,distance){var envDist=this.getEnvelopeInternal().distance(geom.getEnvelopeInternal());if(envDist>distance){return false;}
return DistanceOp.isWithinDistance(this,geom,distance);};jsts.geom.Geometry.prototype.isRectangle=function(){return false;};jsts.geom.Geometry.prototype.getArea=function(){return 0.0;};jsts.geom.Geometry.prototype.getLength=function(){return 0.0;};jsts.geom.Geometry.prototype.getCentroid=function(){if(this.isEmpty()){return null;}
var cent;var centPt=null;var dim=this.getDimension();if(dim===0){cent=new jsts.algorithm.CentroidPoint();cent.add(this);centPt=cent.getCentroid();}else if(dim===1){cent=new jsts.algorithm.CentroidLine();cent.add(this);centPt=cent.getCentroid();}else{cent=new jsts.algorithm.CentroidArea();cent.add(this);centPt=cent.getCentroid();}
return this.createPointFromInternalCoord(centPt,this);};jsts.geom.Geometry.prototype.getInteriorPoint=function(){var intPt;var interiorPt=null;var dim=this.getDimension();if(dim===0){intPt=new jsts.algorithm.InteriorPointPoint(this);interiorPt=intPt.getInteriorPoint();}else if(dim===1){intPt=new jsts.algorithm.InteriorPointLine(this);interiorPt=intPt.getInteriorPoint();}else{intPt=new jsts.algorithm.InteriorPointArea(this);interiorPt=intPt.getInteriorPoint();}
return this.createPointFromInternalCoord(interiorPt,this);};jsts.geom.Geometry.prototype.getDimension=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.getBoundary=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.getBoundaryDimension=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.getEnvelope=function(){return this.getFactory().toGeometry(this.getEnvelopeInternal());};jsts.geom.Geometry.prototype.getEnvelopeInternal=function(){if(this.envelope===null){this.envelope=this.computeEnvelopeInternal();}
return this.envelope;};jsts.geom.Geometry.prototype.disjoint=function(g){return!this.intersects(g);};jsts.geom.Geometry.prototype.touches=function(g){if(!this.getEnvelopeInternal().intersects(g.getEnvelopeInternal())){return false;}
return this.relate(g).isTouches(this.getDimension(),g.getDimension());};jsts.geom.Geometry.prototype.intersects=function(g){if(!this.getEnvelopeInternal().intersects(g.getEnvelopeInternal())){return false;}
if(this.isRectangle()){return RectangleIntersects.intersects(this,g);}
if(g.isRectangle()){return RectangleIntersects.intersects(g,this);}
return this.relate(g).isIntersects();};jsts.geom.Geometry.prototype.crosses=function(g){if(!this.getEnvelopeInternal().intersects(g.getEnvelopeInternal())){return false;}
return this.relate(g).isCrosses(this.getDimension(),g.getDimension());};jsts.geom.Geometry.prototype.within=function(g){return g.contains(this);};jsts.geom.Geometry.prototype.contains=function(g){if(!this.getEnvelopeInternal().contains(g.getEnvelopeInternal())){return false;}
if(this.isRectangle()){return RectangleContains.contains(this,g);}
return this.relate(g).isContains();};jsts.geom.Geometry.prototype.overlaps=function(g){if(!this.getEnvelopeInternal().intersects(g.getEnvelopeInternal())){return false;}
return this.relate(g).isOverlaps(this.getDimension(),g.getDimension());};jsts.geom.Geometry.prototype.covers=function(g){if(!this.getEnvelopeInternal().covers(g.getEnvelopeInternal())){return false;}
if(this.isRectangle()){return true;}
return this.relate(g).isCovers();};jsts.geom.Geometry.prototype.coveredBy=function(g){return g.covers(this);};jsts.geom.Geometry.prototype.relate=function(g,intersectionPattern){if(arguments.length===1){return this.relate2.apply(this,arguments);}
return this.relate2(g).matches(intersectionPattern);};jsts.geom.Geometry.prototype.relate2=function(g){this.checkNotGeometryCollection(this);this.checkNotGeometryCollection(g);return jsts.operation.relate.RelateOp.relate(this,g);};jsts.geom.Geometry.prototype.equalsTopo=function(g){if(!this.getEnvelopeInternal().equals(g.getEnvelopeInternal())){return false;}
return this.relate(g).isEquals(this.getDimension(),g.getDimension());};jsts.geom.Geometry.prototype.equals=function(o){if(o instanceof jsts.geom.Geometry||o instanceof jsts.geom.LinearRing||o instanceof jsts.geom.Polygon||o instanceof jsts.geom.GeometryCollection||o instanceof jsts.geom.MultiPoint||o instanceof jsts.geom.MultiLineString||o instanceof jsts.geom.MultiPolygon){return this.equalsExact(o);}
return false;};jsts.geom.Geometry.prototype.buffer=function(distance,quadrantSegments,endCapStyle){var params=new jsts.operation.buffer.BufferParameters(quadrantSegments,endCapStyle)
return jsts.operation.buffer.BufferOp.bufferOp2(this,distance,params);};jsts.geom.Geometry.prototype.convexHull=function(){return new jsts.algorithm.ConvexHull(this).getConvexHull();};jsts.geom.Geometry.prototype.intersection=function(other){if(this.isEmpty()){return this.getFactory().createGeometryCollection(null);}
if(other.isEmpty()){return this.getFactory().createGeometryCollection(null);}
if(this.isGeometryCollection(this)){var g2=other;}
this.checkNotGeometryCollection(this);this.checkNotGeometryCollection(other);return jsts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(this,other,jsts.operation.overlay.OverlayOp.INTERSECTION);};jsts.geom.Geometry.prototype.union=function(other){if(arguments.length===0){return jsts.operation.union.UnaryUnionOp.union(this);}
if(this.isEmpty()){return other.clone();}
if(other.isEmpty()){return this.clone();}
this.checkNotGeometryCollection(this);this.checkNotGeometryCollection(other);return jsts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(this,other,jsts.operation.overlay.OverlayOp.UNION);};jsts.geom.Geometry.prototype.difference=function(other){if(this.isEmpty()){return this.getFactory().createGeometryCollection(null);}
if(other.isEmpty()){return this.clone();}
this.checkNotGeometryCollection(this);this.checkNotGeometryCollection(other);return jsts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(this,other,jsts.operation.overlay.OverlayOp.DIFFERENCE);};jsts.geom.Geometry.prototype.symDifference=function(other){if(this.isEmpty()){return other.clone();}
if(other.isEmpty()){return this.clone();}
this.checkNotGeometryCollection(this);this.checkNotGeometryCollection(other);return jsts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(this,other,jsts.operation.overlay.OverlayOp.SYMDIFFERENCE);};jsts.geom.Geometry.prototype.equalsExact=function(other,tolerance){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.equalsNorm=function(g){if(g===null||g===undefined)
return false;return this.norm().equalsExact(g.norm());};jsts.geom.Geometry.prototype.apply=function(filter){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.clone=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.normalize=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.norm=function(){var copy=this.clone();copy.normalize();return copy;};jsts.geom.Geometry.prototype.compareTo=function(o){var other=o;if(this.getClassSortIndex()!==other.getClassSortIndex()){return this.getClassSortIndex()-other.getClassSortIndex();}
if(this.isEmpty()&&other.isEmpty()){return 0;}
if(this.isEmpty()){return-1;}
if(other.isEmpty()){return 1;}
return this.compareToSameClass(o);};jsts.geom.Geometry.prototype.isEquivalentClass=function(other){if(this instanceof jsts.geom.Point&&other instanceof jsts.geom.Point){return true;}else if(this instanceof jsts.geom.LineString&&(other instanceof jsts.geom.LineString|other instanceof jsts.geom.LinearRing)){return true;}else if(this instanceof jsts.geom.LinearRing&&(other instanceof jsts.geom.LineString|other instanceof jsts.geom.LinearRing)){return true;}else if(this instanceof jsts.geom.Polygon&&(other instanceof jsts.geom.Polygon)){return true;}else if(this instanceof jsts.geom.MultiPoint&&(other instanceof jsts.geom.MultiPoint)){return true;}else if(this instanceof jsts.geom.MultiLineString&&(other instanceof jsts.geom.MultiLineString)){return true;}else if(this instanceof jsts.geom.MultiPolygon&&(other instanceof jsts.geom.MultiPolygon)){return true;}else if(this instanceof jsts.geom.GeometryCollection&&(other instanceof jsts.geom.GeometryCollection)){return true;}
return false;};jsts.geom.Geometry.prototype.checkNotGeometryCollection=function(g){if(g.isGeometryCollectionBase()){throw new jsts.error.IllegalArgumentError('This method does not support GeometryCollection');}};jsts.geom.Geometry.prototype.isGeometryCollection=function(){return(this instanceof jsts.geom.GeometryCollection);};jsts.geom.Geometry.prototype.isGeometryCollectionBase=function(){return(this.CLASS_NAME==='jsts.geom.GeometryCollection');};jsts.geom.Geometry.prototype.computeEnvelopeInternal=function(){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.compareToSameClass=function(o){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Geometry.prototype.compare=function(a,b){var i=a.iterator();var j=b.iterator();while(i.hasNext()&&j.hasNext()){var aElement=i.next();var bElement=j.next();var comparison=aElement.compareTo(bElement);if(comparison!==0){return comparison;}}
if(i.hasNext()){return 1;}
if(j.hasNext()){return-1;}
return 0;};jsts.geom.Geometry.prototype.equal=function(a,b,tolerance){if(tolerance===undefined||tolerance===null||tolerance===0){return a.equals(b);}
return a.distance(b)<=tolerance;};jsts.geom.Geometry.prototype.getClassSortIndex=function(){var sortedClasses=[jsts.geom.Point,jsts.geom.MultiPoint,jsts.geom.LineString,jsts.geom.LinearRing,jsts.geom.MultiLineString,jsts.geom.Polygon,jsts.geom.MultiPolygon,jsts.geom.GeometryCollection];for(var i=0;i<sortedClasses.length;i++){if(this instanceof sortedClasses[i])
return i;}
jsts.util.Assert.shouldNeverReachHere('Class not supported: '+this);return-1;};jsts.geom.Geometry.prototype.toString=function(){return new jsts.io.WKTWriter().write(this);};jsts.geom.Geometry.prototype.createPointFromInternalCoord=function(coord,exemplar){exemplar.getPrecisionModel().makePrecise(coord);return exemplar.getFactory().createPoint(coord);};(function(){jsts.geom.Coordinate=function(x,y){if(typeof x==='number'){this.x=x;this.y=y;}else if(x instanceof jsts.geom.Coordinate){this.x=parseFloat(x.x);this.y=parseFloat(x.y);}else if(x===undefined||x===null){this.x=0;this.y=0;}else if(typeof x==='string'){this.x=parseFloat(x);this.y=parseFloat(y);}};jsts.geom.Coordinate.prototype.setCoordinate=function(other){this.x=other.x;this.y=other.y;};jsts.geom.Coordinate.prototype.clone=function(){return new jsts.geom.Coordinate(this.x,this.y);};jsts.geom.Coordinate.prototype.distance=function(p){var dx=this.x-p.x;var dy=this.y-p.y;return Math.sqrt(dx*dx+dy*dy);};jsts.geom.Coordinate.prototype.equals2D=function(other){if(this.x!==other.x){return false;}
if(this.y!==other.y){return false;}
return true;};jsts.geom.Coordinate.prototype.equals=function(other){if(!other instanceof jsts.geom.Coordinate||other===undefined){return false;}
return this.equals2D(other);};jsts.geom.Coordinate.prototype.compareTo=function(other){if(this.x<other.x){return-1;}
if(this.x>other.x){return 1;}
if(this.y<other.y){return-1;}
if(this.y>other.y){return 1;}
return 0;};jsts.geom.Coordinate.prototype.toString=function(){return'('+this.x+', '+this.y+')';};})();jsts.geom.Envelope=function(){jsts.geom.Envelope.prototype.init.apply(this,arguments);};jsts.geom.Envelope.prototype.minx=null;jsts.geom.Envelope.prototype.maxx=null;jsts.geom.Envelope.prototype.miny=null;jsts.geom.Envelope.prototype.maxy=null;jsts.geom.Envelope.prototype.init=function(){if(typeof arguments[0]==='number'&&arguments.length===4){this.initFromValues(arguments[0],arguments[1],arguments[2],arguments[3]);}else if(arguments[0]instanceof jsts.geom.Coordinate&&arguments.length===1){this.initFromCoordinate(arguments[0]);}else if(arguments[0]instanceof jsts.geom.Coordinate&&arguments.length===2){this.initFromCoordinates(arguments[0],arguments[1]);}else if(arguments[0]instanceof jsts.geom.Envelope&&arguments.length===1){this.initFromEnvelope(arguments[0]);}else{this.setToNull();}};jsts.geom.Envelope.prototype.initFromValues=function(x1,x2,y1,y2){if(x1<x2){this.minx=x1;this.maxx=x2;}else{this.minx=x2;this.maxx=x1;}
if(y1<y2){this.miny=y1;this.maxy=y2;}else{this.miny=y2;this.maxy=y1;}};jsts.geom.Envelope.prototype.initFromCoordinates=function(p1,p2){this.initFromValues(p1.x,p2.x,p1.y,p2.y);};jsts.geom.Envelope.prototype.initFromCoordinate=function(p){this.initFromValues(p.x,p.x,p.y,p.y);};jsts.geom.Envelope.prototype.initFromEnvelope=function(env){this.minx=env.minx;this.maxx=env.maxx;this.miny=env.miny;this.maxy=env.maxy;};jsts.geom.Envelope.prototype.setToNull=function(){this.minx=0;this.maxx=-1;this.miny=0;this.maxy=-1;};jsts.geom.Envelope.prototype.isNull=function(){return this.maxx<this.minx;};jsts.geom.Envelope.prototype.getHeight=function(){if(this.isNull()){return 0;}
return this.maxy-this.miny;};jsts.geom.Envelope.prototype.getWidth=function(){if(this.isNull()){return 0;}
return this.maxx-this.minx;};jsts.geom.Envelope.prototype.getMinX=function(){return this.minx;};jsts.geom.Envelope.prototype.getMaxX=function(){return this.maxx;};jsts.geom.Envelope.prototype.getMinY=function(){return this.miny;};jsts.geom.Envelope.prototype.getMaxY=function(){return this.maxy;};jsts.geom.Envelope.prototype.getArea=function(){return this.getWidth()*this.getHeight();};jsts.geom.Envelope.prototype.expandToInclude=function(){if(arguments[0]instanceof jsts.geom.Coordinate){this.expandToIncludeCoordinate(arguments[0]);}else if(arguments[0]instanceof jsts.geom.Envelope){this.expandToIncludeEnvelope(arguments[0]);}else{this.expandToIncludeValues(arguments[0],arguments[1]);}};jsts.geom.Envelope.prototype.expandToIncludeCoordinate=function(p){this.expandToIncludeValues(p.x,p.y);};jsts.geom.Envelope.prototype.expandToIncludeValues=function(x,y){if(this.isNull()){this.minx=x;this.maxx=x;this.miny=y;this.maxy=y;}else{if(x<this.minx){this.minx=x;}
if(x>this.maxx){this.maxx=x;}
if(y<this.miny){this.miny=y;}
if(y>this.maxy){this.maxy=y;}}};jsts.geom.Envelope.prototype.expandToIncludeEnvelope=function(other){if(other.isNull()){return;}
if(this.isNull()){this.minx=other.getMinX();this.maxx=other.getMaxX();this.miny=other.getMinY();this.maxy=other.getMaxY();}else{if(other.minx<this.minx){this.minx=other.minx;}
if(other.maxx>this.maxx){this.maxx=other.maxx;}
if(other.miny<this.miny){this.miny=other.miny;}
if(other.maxy>this.maxy){this.maxy=other.maxy;}}};jsts.geom.Envelope.prototype.expandBy=function(){if(arguments.length===1){this.expandByDistance(arguments[0]);}else{this.expandByDistances(arguments[0],arguments[1]);}};jsts.geom.Envelope.prototype.expandByDistance=function(distance){this.expandByDistances(distance,distance);};jsts.geom.Envelope.prototype.expandByDistances=function(deltaX,deltaY){if(this.isNull()){return;}
this.minx-=deltaX;this.maxx+=deltaX;this.miny-=deltaY;this.maxy+=deltaY;if(this.minx>this.maxx||this.miny>this.maxy){this.setToNull();}};jsts.geom.Envelope.prototype.translate=function(transX,transY){if(this.isNull()){return;}
this.init(this.minx+transX,this.maxx+transX,this.miny+transY,this.maxy+transY);};jsts.geom.Envelope.prototype.centre=function(){if(this.isNull()){return null;}
return new jsts.geom.Coordinate((this.minx+this.maxx)/2.0,(this.miny+this.maxy)/2.0);};jsts.geom.Envelope.prototype.intersection=function(env){if(this.isNull()||env.isNull()||!this.intersects(env)){return new jsts.geom.Envelope();}
var intMinX=this.minx>env.minx?this.minx:env.minx;var intMinY=this.miny>env.miny?this.miny:env.miny;var intMaxX=this.maxx<env.maxx?this.maxx:env.maxx;var intMaxY=this.maxy<env.maxy?this.maxy:env.maxy;return new jsts.geom.Envelope(intMinX,intMaxX,intMinY,intMaxY);};jsts.geom.Envelope.prototype.intersects=function(){if(arguments[0]instanceof jsts.geom.Envelope){return this.intersectsEnvelope(arguments[0]);}else if(arguments[0]instanceof jsts.geom.Coordinate){return this.intersectsCoordinate(arguments[0]);}else{return this.intersectsValues(arguments[0],arguments[1]);}};jsts.geom.Envelope.prototype.intersectsEnvelope=function(other){if(this.isNull()||other.isNull()){return false;}
var result=!(other.minx>this.maxx||other.maxx<this.minx||other.miny>this.maxy||other.maxy<this.miny);return result;};jsts.geom.Envelope.prototype.intersectsCoordinate=function(p){return this.intersectsValues(p.x,p.y);};jsts.geom.Envelope.prototype.intersectsValues=function(x,y){if(this.isNull()){return false;}
return!(x>this.maxx||x<this.minx||y>this.maxy||y<this.miny);};jsts.geom.Envelope.prototype.contains=function(){if(arguments[0]instanceof jsts.geom.Envelope){return this.containsEnvelope(arguments[0]);}else if(arguments[0]instanceof jsts.geom.Coordinate){return this.containsCoordinate(arguments[0]);}else{return this.containsValues(arguments[0],arguments[1]);}};jsts.geom.Envelope.prototype.containsEnvelope=function(other){return this.coversEnvelope(other);};jsts.geom.Envelope.prototype.containsCoordinate=function(p){return this.coversCoordinate(p);};jsts.geom.Envelope.prototype.containsValues=function(x,y){return this.coversValues(x,y);};jsts.geom.Envelope.prototype.covers=function(){if(arguments[0]instanceof jsts.geom.Envelope){this.coversEnvelope(arguments[0]);}else if(arguments[0]instanceof jsts.geom.Coordinate){this.coversCoordinate(arguments[0]);}else{this.coversValues(arguments[0],arguments[1]);}};jsts.geom.Envelope.prototype.coversValues=function(x,y){if(this.isNull()){return false;}
return x>=this.minx&&x<=this.maxx&&y>=this.miny&&y<=this.maxy;};jsts.geom.Envelope.prototype.coversCoordinate=function(p){return this.coversValues(p.x,p.y);};jsts.geom.Envelope.prototype.coversEnvelope=function(other){if(this.isNull()||other.isNull()){return false;}
return other.minx>=this.minx&&other.maxx<=this.maxx&&other.miny>=this.miny&&other.maxy<=this.maxy;};jsts.geom.Envelope.prototype.distance=function(env){if(this.intersects(env)){return 0;}
var dx=0.0;if(this.maxx<env.minx){dx=env.minx-this.maxx;}
if(this.minx>env.maxx){dx=this.minx-env.maxx;}
var dy=0.0;if(this.maxy<env.miny){dy=env.miny-this.maxy;}
if(this.miny>env.maxy){dy=this.miny-env.maxy;}
if(dx===0.0){return dy;}
if(dy===0.0){return dx;}
return Math.sqrt(dx*dx+dy*dy);};jsts.geom.Envelope.prototype.equals=function(other){if(this.isNull()){return other.isNull();}
return this.maxx===other.maxx&&this.maxy===other.maxy&&this.minx===other.minx&&this.miny===other.miny;};jsts.geom.Envelope.prototype.toString=function(){return'Env['+this.minx+' : '+this.maxx+', '+this.miny+' : '+
this.maxy+']';};jsts.geom.Envelope.intersects=function(p1,p2,q){if(arguments.length===4){return jsts.geom.Envelope.intersectsEnvelope(arguments[0],arguments[1],arguments[2],arguments[3]);}
var xc1=p1.x<p2.x?p1.x:p2.x;var xc2=p1.x>p2.x?p1.x:p2.x;var yc1=p1.y<p2.y?p1.y:p2.y;var yc2=p1.y>p2.y?p1.y:p2.y;if(((q.x>=xc1)&&(q.x<=xc2))&&((q.y>=yc1)&&(q.y<=yc2))){return true;}
return false;};jsts.geom.Envelope.intersectsEnvelope=function(p1,p2,q1,q2){var minq=Math.min(q1.x,q2.x);var maxq=Math.max(q1.x,q2.x);var minp=Math.min(p1.x,p2.x);var maxp=Math.max(p1.x,p2.x);if(minp>maxq){return false;}
if(maxp<minq){return false;}
minq=Math.min(q1.y,q2.y);maxq=Math.max(q1.y,q2.y);minp=Math.min(p1.y,p2.y);maxp=Math.max(p1.y,p2.y);if(minp>maxq){return false;}
if(maxp<minq){return false;}
return true;};jsts.geom.Envelope.prototype.clone=function(){return new jsts.geom.Envelope(this.minx,this.maxx,this.miny,this.maxy);};jsts.geom.util.GeometryCombiner=function(geoms){this.geomFactory=jsts.geom.util.GeometryCombiner.extractFactory(geoms);this.inputGeoms=geoms;};jsts.geom.util.GeometryCombiner.combine=function(geoms){if(arguments.length>1)return this.combine2.apply(this,arguments);var combiner=new jsts.geom.util.GeometryCombiner(geoms);return combiner.combine();};jsts.geom.util.GeometryCombiner.combine2=function(){var arrayList=new javascript.util.ArrayList();Array.prototype.slice.call(arguments).forEach(function(a){arrayList.add(a);});var combiner=new jsts.geom.util.GeometryCombiner(arrayList);return combiner.combine();};jsts.geom.util.GeometryCombiner.prototype.geomFactory=null;jsts.geom.util.GeometryCombiner.prototype.skipEmpty=false;jsts.geom.util.GeometryCombiner.prototype.inputGeoms;jsts.geom.util.GeometryCombiner.extractFactory=function(geoms){if(geoms.isEmpty())return null;return geoms.iterator().next().getFactory();};jsts.geom.util.GeometryCombiner.prototype.combine=function(){var elems=new javascript.util.ArrayList(),i;for(i=this.inputGeoms.iterator();i.hasNext();){var g=i.next();this.extractElements(g,elems);}
if(elems.size()===0){if(this.geomFactory!==null){return this.geomFactory.createGeometryCollection(null);}
return null;}
return this.geomFactory.buildGeometry(elems);};jsts.geom.util.GeometryCombiner.prototype.extractElements=function(geom,elems){if(geom===null){return;}
for(var i=0;i<geom.getNumGeometries();i++){var elemGeom=geom.getGeometryN(i);if(this.skipEmpty&&elemGeom.isEmpty()){continue;}
elems.add(elemGeom);}};jsts.geom.PrecisionModel=function(modelType){if(typeof modelType==='number'){this.modelType=jsts.geom.PrecisionModel.FIXED;this.scale=modelType;return;}
this.modelType=modelType||jsts.geom.PrecisionModel.FLOATING;if(this.modelType===jsts.geom.PrecisionModel.FIXED){this.scale=1.0;}};jsts.geom.PrecisionModel.FLOATING='FLOATING';jsts.geom.PrecisionModel.FIXED='FIXED';jsts.geom.PrecisionModel.FLOATING_SINGLE='FLOATING_SINGLE';jsts.geom.PrecisionModel.prototype.scale=null;jsts.geom.PrecisionModel.prototype.modelType=null;jsts.geom.PrecisionModel.prototype.isFloating=function(){return this.modelType===jsts.geom.PrecisionModel.FLOATING||this.modelType===jsts.geom.PrecisionModel.FLOATING_SINLGE;};jsts.geom.PrecisionModel.prototype.getScale=function(){return this.scale;};jsts.geom.PrecisionModel.prototype.getType=function(){return this.modelType;};jsts.geom.PrecisionModel.prototype.equals=function(other){return true;if(!(other instanceof jsts.geom.PrecisionModel)){return false;}
var otherPrecisionModel=other;return this.modelType===otherPrecisionModel.modelType&&this.scale===otherPrecisionModel.scale;};jsts.geom.PrecisionModel.prototype.makePrecise=function(val){if(val instanceof jsts.geom.Coordinate){this.makePrecise2(val);return;}
if(isNaN(val))
return val;if(this.modelType===jsts.geom.PrecisionModel.FIXED){return Math.round(val*this.scale)/this.scale;}
return val;};jsts.geom.PrecisionModel.prototype.makePrecise2=function(coord){if(this.modelType===jsts.geom.PrecisionModel.FLOATING)
return;coord.x=this.makePrecise(coord.x);coord.y=this.makePrecise(coord.y);};jsts.geom.PrecisionModel.prototype.compareTo=function(o){var other=o;return 0;};jsts.geom.CoordinateFilter=function(){};jsts.geom.CoordinateFilter.prototype.filter=function(coord){throw new jsts.error.AbstractMethodInvocationError();};jsts.geom.Point=function(coordinate,factory){this.factory=factory;if(coordinate===undefined)
return;this.coordinate=coordinate;};jsts.geom.Point.prototype=new jsts.geom.Geometry();jsts.geom.Point.constructor=jsts.geom.Point;jsts.geom.Point.CLASS_NAME='jsts.geom.Point';jsts.geom.Point.prototype.coordinate=null;jsts.geom.Point.prototype.getX=function(){return this.coordinate.x;};jsts.geom.Point.prototype.getY=function(){return this.coordinate.y;};jsts.geom.Point.prototype.getCoordinate=function(){return this.coordinate;};jsts.geom.Point.prototype.getCoordinates=function(){return this.isEmpty()?[]:[this.coordinate];};jsts.geom.Point.prototype.isEmpty=function(){return this.coordinate===null;};jsts.geom.Point.prototype.equalsExact=function(other,tolerance){if(!this.isEquivalentClass(other)){return false;}
if(this.isEmpty()&&other.isEmpty()){return true;}
return this.equal(other.getCoordinate(),this.getCoordinate(),tolerance);};jsts.geom.Point.prototype.getNumPoints=function(){return this.isEmpty()?0:1;};jsts.geom.Point.prototype.isSimple=function(){return true;};jsts.geom.Point.prototype.getBoundary=function(){return new jsts.geom.GeometryCollection(null);};jsts.geom.Point.prototype.computeEnvelopeInternal=function(){if(this.isEmpty()){return new jsts.geom.Envelope();}
return new jsts.geom.Envelope(this.coordinate);};jsts.geom.Point.prototype.apply=function(filter){if(filter instanceof jsts.geom.GeometryFilter||filter instanceof jsts.geom.GeometryComponentFilter){filter.filter(this);}else if(filter instanceof jsts.geom.CoordinateFilter){if(this.isEmpty()){return;}
filter.filter(this.getCoordinate());}};jsts.geom.Point.prototype.clone=function(){return new jsts.geom.Point(this.coordinate.clone(),this.factory);};jsts.geom.Point.prototype.getDimension=function(){return 0;};jsts.geom.Point.prototype.getBoundaryDimension=function(){return jsts.geom.Dimension.FALSE;};jsts.geom.Point.prototype.reverse=function(){return this.clone();};jsts.geom.Point.prototype.isValid=function(){if(!jsts.operation.valid.IsValidOp.isValid(this.getCoordinate())){return false;}
return true;};jsts.geom.Point.prototype.normalize=function(){};jsts.geom.Point.prototype.compareToSameClass=function(other){var point=other;return this.getCoordinate().compareTo(point.getCoordinate());};jsts.geom.Point.prototype.getGeometryType=function(){return'Point';};jsts.geom.Point.prototype.hashCode=function(){return'Point_'+this.coordinate.hashCode();};jsts.geom.Point.prototype.CLASS_NAME='jsts.geom.Point';jsts.geomgraph.EdgeIntersection=function(coord,segmentIndex,dist){this.coord=new jsts.geom.Coordinate(coord);this.segmentIndex=segmentIndex;this.dist=dist;};jsts.geomgraph.EdgeIntersection.prototype.coord=null;jsts.geomgraph.EdgeIntersection.prototype.segmentIndex=null;jsts.geomgraph.EdgeIntersection.prototype.dist=null;jsts.geomgraph.EdgeIntersection.prototype.getCoordinate=function(){return this.coord;};jsts.geomgraph.EdgeIntersection.prototype.getSegmentIndex=function(){return this.segmentIndex;};jsts.geomgraph.EdgeIntersection.prototype.getDistance=function(){return this.dist;};jsts.geomgraph.EdgeIntersection.prototype.compareTo=function(other){return this.compare(other.segmentIndex,other.dist);};jsts.geomgraph.EdgeIntersection.prototype.compare=function(segmentIndex,dist){if(this.segmentIndex<segmentIndex)
return-1;if(this.segmentIndex>segmentIndex)
return 1;if(this.dist<dist)
return-1;if(this.dist>dist)
return 1;return 0;};jsts.geomgraph.EdgeIntersection.prototype.isEndPoint=function(maxSegmentIndex){if(this.segmentIndex===0&&this.dist===0.0)
return true;if(this.segmentInde