box2dweb-commonjs/Box2dWeb-2.1.a.3.js

Box2dweb as a Common JS module

/*
* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
*
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
var Box2D = {};

(function (a2j, undefined) {

   if(!Object.defineProperty
      && Object.prototype.__defineGetter__ instanceof Function
      && Object.prototype.__defineSetter__ instanceof Function)
   {
      Object.defineProperty = function(obj, p, cfg) {
         if(cfg.get instanceof Function)
            obj.__defineGetter__(p, cfg.get);
         if(cfg.set instanceof Function)
            obj.__defineSetter__(p, cfg.set);
      }
   }
   
   function emptyFn() {};
   a2j.inherit = function(cls, base) {
      var tmpCtr = cls;
      emptyFn.prototype = base.prototype;
      cls.prototype = new emptyFn;
      cls.prototype.constructor = tmpCtr;
   };
   
   a2j.generateCallback = function generateCallback(context, cb) {
      return function () {
         cb.apply(context, arguments);
      };
   };
   
   a2j.NVector = function NVector(length) {
      if (length === undefined) length = 0;
      var tmp = new Array(length || 0);
      for (var i = 0; i < length; ++i)
      tmp[i] = 0;
      return tmp;
   };
   
   a2j.is = function is(o1, o2) {
      if (o1 === null) return false;
      if ((o2 instanceof Function) && (o1 instanceof o2)) return true;
      if ((o1.constructor.__implements != undefined) && (o1.constructor.__implements[o2])) return true;
      return false;
   };
   
   a2j.parseUInt = function(v) {
      return Math.abs(parseInt(v));
   }
   
})(Box2D);

//#TODO remove assignments from global namespace
var Vector = Array;
var Vector_a2j_Number = Box2D.NVector;
//package structure
if (typeof(Box2D) === "undefined") Box2D = {};
if (typeof(Box2D.Collision) === "undefined") Box2D.Collision = {};
if (typeof(Box2D.Collision.Shapes) === "undefined") Box2D.Collision.Shapes = {};
if (typeof(Box2D.Common) === "undefined") Box2D.Common = {};
if (typeof(Box2D.Common.Math) === "undefined") Box2D.Common.Math = {};
if (typeof(Box2D.Dynamics) === "undefined") Box2D.Dynamics = {};
if (typeof(Box2D.Dynamics.Contacts) === "undefined") Box2D.Dynamics.Contacts = {};
if (typeof(Box2D.Dynamics.Controllers) === "undefined") Box2D.Dynamics.Controllers = {};
if (typeof(Box2D.Dynamics.Joints) === "undefined") Box2D.Dynamics.Joints = {};
//pre-definitions
(function () {
   Box2D.Collision.IBroadPhase = 'Box2D.Collision.IBroadPhase';

   function b2AABB() {
      b2AABB.b2AABB.apply(this, arguments);
   };
   Box2D.Collision.b2AABB = b2AABB;

   function b2Bound() {
      b2Bound.b2Bound.apply(this, arguments);
   };
   Box2D.Collision.b2Bound = b2Bound;

   function b2BoundValues() {
      b2BoundValues.b2BoundValues.apply(this, arguments);
      if (this.constructor === b2BoundValues) this.b2BoundValues.apply(this, arguments);
   };
   Box2D.Collision.b2BoundValues = b2BoundValues;

   function b2Collision() {
      b2Collision.b2Collision.apply(this, arguments);
   };
   Box2D.Collision.b2Collision = b2Collision;

   function b2ContactID() {
      b2ContactID.b2ContactID.apply(this, arguments);
      if (this.constructor === b2ContactID) this.b2ContactID.apply(this, arguments);
   };
   Box2D.Collision.b2ContactID = b2ContactID;

   function b2ContactPoint() {
      b2ContactPoint.b2ContactPoint.apply(this, arguments);
   };
   Box2D.Collision.b2ContactPoint = b2ContactPoint;

   function b2Distance() {
      b2Distance.b2Distance.apply(this, arguments);
   };
   Box2D.Collision.b2Distance = b2Distance;

   function b2DistanceInput() {
      b2DistanceInput.b2DistanceInput.apply(this, arguments);
   };
   Box2D.Collision.b2DistanceInput = b2DistanceInput;

   function b2DistanceOutput() {
      b2DistanceOutput.b2DistanceOutput.apply(this, arguments);
   };
   Box2D.Collision.b2DistanceOutput = b2DistanceOutput;

   function b2DistanceProxy() {
      b2DistanceProxy.b2DistanceProxy.apply(this, arguments);
   };
   Box2D.Collision.b2DistanceProxy = b2DistanceProxy;

   function b2DynamicTree() {
      b2DynamicTree.b2DynamicTree.apply(this, arguments);
      if (this.constructor === b2DynamicTree) this.b2DynamicTree.apply(this, arguments);
   };
   Box2D.Collision.b2DynamicTree = b2DynamicTree;

   function b2DynamicTreeBroadPhase() {
      b2DynamicTreeBroadPhase.b2DynamicTreeBroadPhase.apply(this, arguments);
   };
   Box2D.Collision.b2DynamicTreeBroadPhase = b2DynamicTreeBroadPhase;

   function b2DynamicTreeNode() {
      b2DynamicTreeNode.b2DynamicTreeNode.apply(this, arguments);
   };
   Box2D.Collision.b2DynamicTreeNode = b2DynamicTreeNode;

   function b2DynamicTreePair() {
      b2DynamicTreePair.b2DynamicTreePair.apply(this, arguments);
   };
   Box2D.Collision.b2DynamicTreePair = b2DynamicTreePair;

   function b2Manifold() {
      b2Manifold.b2Manifold.apply(this, arguments);
      if (this.constructor === b2Manifold) this.b2Manifold.apply(this, arguments);
   };
   Box2D.Collision.b2Manifold = b2Manifold;

   function b2ManifoldPoint() {
      b2ManifoldPoint.b2ManifoldPoint.apply(this, arguments);
      if (this.constructor === b2ManifoldPoint) this.b2ManifoldPoint.apply(this, arguments);
   };
   Box2D.Collision.b2ManifoldPoint = b2ManifoldPoint;

   function b2Point() {
      b2Point.b2Point.apply(this, arguments);
   };
   Box2D.Collision.b2Point = b2Point;

   function b2RayCastInput() {
      b2RayCastInput.b2RayCastInput.apply(this, arguments);
      if (this.constructor === b2RayCastInput) this.b2RayCastInput.apply(this, arguments);
   };
   Box2D.Collision.b2RayCastInput = b2RayCastInput;

   function b2RayCastOutput() {
      b2RayCastOutput.b2RayCastOutput.apply(this, arguments);
   };
   Box2D.Collision.b2RayCastOutput = b2RayCastOutput;

   function b2Segment() {
      b2Segment.b2Segment.apply(this, arguments);
   };
   Box2D.Collision.b2Segment = b2Segment;

   function b2SeparationFunction() {
      b2SeparationFunction.b2SeparationFunction.apply(this, arguments);
   };
   Box2D.Collision.b2SeparationFunction = b2SeparationFunction;

   function b2Simplex() {
      b2Simplex.b2Simplex.apply(this, arguments);
      if (this.constructor === b2Simplex) this.b2Simplex.apply(this, arguments);
   };
   Box2D.Collision.b2Simplex = b2Simplex;

   function b2SimplexCache() {
      b2SimplexCache.b2SimplexCache.apply(this, arguments);
   };
   Box2D.Collision.b2SimplexCache = b2SimplexCache;

   function b2SimplexVertex() {
      b2SimplexVertex.b2SimplexVertex.apply(this, arguments);
   };
   Box2D.Collision.b2SimplexVertex = b2SimplexVertex;

   function b2TimeOfImpact() {
      b2TimeOfImpact.b2TimeOfImpact.apply(this, arguments);
   };
   Box2D.Collision.b2TimeOfImpact = b2TimeOfImpact;

   function b2TOIInput() {
      b2TOIInput.b2TOIInput.apply(this, arguments);
   };
   Box2D.Collision.b2TOIInput = b2TOIInput;

   function b2WorldManifold() {
      b2WorldManifold.b2WorldManifold.apply(this, arguments);
      if (this.constructor === b2WorldManifold) this.b2WorldManifold.apply(this, arguments);
   };
   Box2D.Collision.b2WorldManifold = b2WorldManifold;

   function ClipVertex() {
      ClipVertex.ClipVertex.apply(this, arguments);
   };
   Box2D.Collision.ClipVertex = ClipVertex;

   function Features() {
      Features.Features.apply(this, arguments);
   };
   Box2D.Collision.Features = Features;

   function b2CircleShape() {
      b2CircleShape.b2CircleShape.apply(this, arguments);
      if (this.constructor === b2CircleShape) this.b2CircleShape.apply(this, arguments);
   };
   Box2D.Collision.Shapes.b2CircleShape = b2CircleShape;

   function b2EdgeChainDef() {
      b2EdgeChainDef.b2EdgeChainDef.apply(this, arguments);
      if (this.constructor === b2EdgeChainDef) this.b2EdgeChainDef.apply(this, arguments);
   };
   Box2D.Collision.Shapes.b2EdgeChainDef = b2EdgeChainDef;

   function b2EdgeShape() {
      b2EdgeShape.b2EdgeShape.apply(this, arguments);
      if (this.constructor === b2EdgeShape) this.b2EdgeShape.apply(this, arguments);
   };
   Box2D.Collision.Shapes.b2EdgeShape = b2EdgeShape;

   function b2MassData() {
      b2MassData.b2MassData.apply(this, arguments);
   };
   Box2D.Collision.Shapes.b2MassData = b2MassData;

   function b2PolygonShape() {
      b2PolygonShape.b2PolygonShape.apply(this, arguments);
      if (this.constructor === b2PolygonShape) this.b2PolygonShape.apply(this, arguments);
   };
   Box2D.Collision.Shapes.b2PolygonShape = b2PolygonShape;

   function b2Shape() {
      b2Shape.b2Shape.apply(this, arguments);
      if (this.constructor === b2Shape) this.b2Shape.apply(this, arguments);
   };
   Box2D.Collision.Shapes.b2Shape = b2Shape;
   Box2D.Common.b2internal = 'Box2D.Common.b2internal';

   function b2Color() {
      b2Color.b2Color.apply(this, arguments);
      if (this.constructor === b2Color) this.b2Color.apply(this, arguments);
   };
   Box2D.Common.b2Color = b2Color;

   function b2Settings() {
      b2Settings.b2Settings.apply(this, arguments);
   };
   Box2D.Common.b2Settings = b2Settings;

   function b2Mat22() {
      b2Mat22.b2Mat22.apply(this, arguments);
      if (this.constructor === b2Mat22) this.b2Mat22.apply(this, arguments);
   };
   Box2D.Common.Math.b2Mat22 = b2Mat22;

   function b2Mat33() {
      b2Mat33.b2Mat33.apply(this, arguments);
      if (this.constructor === b2Mat33) this.b2Mat33.apply(this, arguments);
   };
   Box2D.Common.Math.b2Mat33 = b2Mat33;

   function b2Math() {
      b2Math.b2Math.apply(this, arguments);
   };
   Box2D.Common.Math.b2Math = b2Math;

   function b2Sweep() {
      b2Sweep.b2Sweep.apply(this, arguments);
   };
   Box2D.Common.Math.b2Sweep = b2Sweep;

   function b2Transform() {
      b2Transform.b2Transform.apply(this, arguments);
      if (this.constructor === b2Transform) this.b2Transform.apply(this, arguments);
   };
   Box2D.Common.Math.b2Transform = b2Transform;

   function b2Vec2() {
      b2Vec2.b2Vec2.apply(this, arguments);
      if (this.constructor === b2Vec2) this.b2Vec2.apply(this, arguments);
   };
   Box2D.Common.Math.b2Vec2 = b2Vec2;

   function b2Vec3() {
      b2Vec3.b2Vec3.apply(this, arguments);
      if (this.constructor === b2Vec3) this.b2Vec3.apply(this, arguments);
   };
   Box2D.Common.Math.b2Vec3 = b2Vec3;

   function b2Body() {
      b2Body.b2Body.apply(this, arguments);
      if (this.constructor === b2Body) this.b2Body.apply(this, arguments);
   };
   Box2D.Dynamics.b2Body = b2Body;

   function b2BodyDef() {
      b2BodyDef.b2BodyDef.apply(this, arguments);
      if (this.constructor === b2BodyDef) this.b2BodyDef.apply(this, arguments);
   };
   Box2D.Dynamics.b2BodyDef = b2BodyDef;

   function b2ContactFilter() {
      b2ContactFilter.b2ContactFilter.apply(this, arguments);
   };
   Box2D.Dynamics.b2ContactFilter = b2ContactFilter;

   function b2ContactImpulse() {
      b2ContactImpulse.b2ContactImpulse.apply(this, arguments);
   };
   Box2D.Dynamics.b2ContactImpulse = b2ContactImpulse;

   function b2ContactListener() {
      b2ContactListener.b2ContactListener.apply(this, arguments);
   };
   Box2D.Dynamics.b2ContactListener = b2ContactListener;

   function b2ContactManager() {
      b2ContactManager.b2ContactManager.apply(this, arguments);
      if (this.constructor === b2ContactManager) this.b2ContactManager.apply(this, arguments);
   };
   Box2D.Dynamics.b2ContactManager = b2ContactManager;

   function b2DebugDraw() {
      b2DebugDraw.b2DebugDraw.apply(this, arguments);
      if (this.constructor === b2DebugDraw) this.b2DebugDraw.apply(this, arguments);
   };
   Box2D.Dynamics.b2DebugDraw = b2DebugDraw;

   function b2DestructionListener() {
      b2DestructionListener.b2DestructionListener.apply(this, arguments);
   };
   Box2D.Dynamics.b2DestructionListener = b2DestructionListener;

   function b2FilterData() {
      b2FilterData.b2FilterData.apply(this, arguments);
   };
   Box2D.Dynamics.b2FilterData = b2FilterData;

   function b2Fixture() {
      b2Fixture.b2Fixture.apply(this, arguments);
      if (this.constructor === b2Fixture) this.b2Fixture.apply(this, arguments);
   };
   Box2D.Dynamics.b2Fixture = b2Fixture;

   function b2FixtureDef() {
      b2FixtureDef.b2FixtureDef.apply(this, arguments);
      if (this.constructor === b2FixtureDef) this.b2FixtureDef.apply(this, arguments);
   };
   Box2D.Dynamics.b2FixtureDef = b2FixtureDef;

   function b2Island() {
      b2Island.b2Island.apply(this, arguments);
      if (this.constructor === b2Island) this.b2Island.apply(this, arguments);
   };
   Box2D.Dynamics.b2Island = b2Island;

   function b2TimeStep() {
      b2TimeStep.b2TimeStep.apply(this, arguments);
   };
   Box2D.Dynamics.b2TimeStep = b2TimeStep;

   function b2World() {
      b2World.b2World.apply(this, arguments);
      if (this.constructor === b2World) this.b2World.apply(this, arguments);
   };
   Box2D.Dynamics.b2World = b2World;

   function b2CircleContact() {
      b2CircleContact.b2CircleContact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2CircleContact = b2CircleContact;

   function b2Contact() {
      b2Contact.b2Contact.apply(this, arguments);
      if (this.constructor === b2Contact) this.b2Contact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2Contact = b2Contact;

   function b2ContactConstraint() {
      b2ContactConstraint.b2ContactConstraint.apply(this, arguments);
      if (this.constructor === b2ContactConstraint) this.b2ContactConstraint.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactConstraint = b2ContactConstraint;

   function b2ContactConstraintPoint() {
      b2ContactConstraintPoint.b2ContactConstraintPoint.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactConstraintPoint = b2ContactConstraintPoint;

   function b2ContactEdge() {
      b2ContactEdge.b2ContactEdge.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactEdge = b2ContactEdge;

   function b2ContactFactory() {
      b2ContactFactory.b2ContactFactory.apply(this, arguments);
      if (this.constructor === b2ContactFactory) this.b2ContactFactory.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactFactory = b2ContactFactory;

   function b2ContactRegister() {
      b2ContactRegister.b2ContactRegister.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactRegister = b2ContactRegister;

   function b2ContactResult() {
      b2ContactResult.b2ContactResult.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactResult = b2ContactResult;

   function b2ContactSolver() {
      b2ContactSolver.b2ContactSolver.apply(this, arguments);
      if (this.constructor === b2ContactSolver) this.b2ContactSolver.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2ContactSolver = b2ContactSolver;

   function b2EdgeAndCircleContact() {
      b2EdgeAndCircleContact.b2EdgeAndCircleContact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2EdgeAndCircleContact = b2EdgeAndCircleContact;

   function b2NullContact() {
      b2NullContact.b2NullContact.apply(this, arguments);
      if (this.constructor === b2NullContact) this.b2NullContact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2NullContact = b2NullContact;

   function b2PolyAndCircleContact() {
      b2PolyAndCircleContact.b2PolyAndCircleContact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2PolyAndCircleContact = b2PolyAndCircleContact;

   function b2PolyAndEdgeContact() {
      b2PolyAndEdgeContact.b2PolyAndEdgeContact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2PolyAndEdgeContact = b2PolyAndEdgeContact;

   function b2PolygonContact() {
      b2PolygonContact.b2PolygonContact.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2PolygonContact = b2PolygonContact;

   function b2PositionSolverManifold() {
      b2PositionSolverManifold.b2PositionSolverManifold.apply(this, arguments);
      if (this.constructor === b2PositionSolverManifold) this.b2PositionSolverManifold.apply(this, arguments);
   };
   Box2D.Dynamics.Contacts.b2PositionSolverManifold = b2PositionSolverManifold;

   function b2BuoyancyController() {
      b2BuoyancyController.b2BuoyancyController.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2BuoyancyController = b2BuoyancyController;

   function b2ConstantAccelController() {
      b2ConstantAccelController.b2ConstantAccelController.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2ConstantAccelController = b2ConstantAccelController;

   function b2ConstantForceController() {
      b2ConstantForceController.b2ConstantForceController.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2ConstantForceController = b2ConstantForceController;

   function b2Controller() {
      b2Controller.b2Controller.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2Controller = b2Controller;

   function b2ControllerEdge() {
      b2ControllerEdge.b2ControllerEdge.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2ControllerEdge = b2ControllerEdge;

   function b2GravityController() {
      b2GravityController.b2GravityController.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2GravityController = b2GravityController;

   function b2TensorDampingController() {
      b2TensorDampingController.b2TensorDampingController.apply(this, arguments);
   };
   Box2D.Dynamics.Controllers.b2TensorDampingController = b2TensorDampingController;

   function b2DistanceJoint() {
      b2DistanceJoint.b2DistanceJoint.apply(this, arguments);
      if (this.constructor === b2DistanceJoint) this.b2DistanceJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2DistanceJoint = b2DistanceJoint;

   function b2DistanceJointDef() {
      b2DistanceJointDef.b2DistanceJointDef.apply(this, arguments);
      if (this.constructor === b2DistanceJointDef) this.b2DistanceJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2DistanceJointDef = b2DistanceJointDef;

   function b2FrictionJoint() {
      b2FrictionJoint.b2FrictionJoint.apply(this, arguments);
      if (this.constructor === b2FrictionJoint) this.b2FrictionJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2FrictionJoint = b2FrictionJoint;

   function b2FrictionJointDef() {
      b2FrictionJointDef.b2FrictionJointDef.apply(this, arguments);
      if (this.constructor === b2FrictionJointDef) this.b2FrictionJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2FrictionJointDef = b2FrictionJointDef;

   function b2GearJoint() {
      b2GearJoint.b2GearJoint.apply(this, arguments);
      if (this.constructor === b2GearJoint) this.b2GearJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2GearJoint = b2GearJoint;

   function b2GearJointDef() {
      b2GearJointDef.b2GearJointDef.apply(this, arguments);
      if (this.constructor === b2GearJointDef) this.b2GearJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2GearJointDef = b2GearJointDef;

   function b2Jacobian() {
      b2Jacobian.b2Jacobian.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2Jacobian = b2Jacobian;

   function b2Joint() {
      b2Joint.b2Joint.apply(this, arguments);
      if (this.constructor === b2Joint) this.b2Joint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2Joint = b2Joint;

   function b2JointDef() {
      b2JointDef.b2JointDef.apply(this, arguments);
      if (this.constructor === b2JointDef) this.b2JointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2JointDef = b2JointDef;

   function b2JointEdge() {
      b2JointEdge.b2JointEdge.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2JointEdge = b2JointEdge;

   function b2LineJoint() {
      b2LineJoint.b2LineJoint.apply(this, arguments);
      if (this.constructor === b2LineJoint) this.b2LineJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2LineJoint = b2LineJoint;

   function b2LineJointDef() {
      b2LineJointDef.b2LineJointDef.apply(this, arguments);
      if (this.constructor === b2LineJointDef) this.b2LineJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2LineJointDef = b2LineJointDef;

   function b2MouseJoint() {
      b2MouseJoint.b2MouseJoint.apply(this, arguments);
      if (this.constructor === b2MouseJoint) this.b2MouseJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2MouseJoint = b2MouseJoint;

   function b2MouseJointDef() {
      b2MouseJointDef.b2MouseJointDef.apply(this, arguments);
      if (this.constructor === b2MouseJointDef) this.b2MouseJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2MouseJointDef = b2MouseJointDef;

   function b2PrismaticJoint() {
      b2PrismaticJoint.b2PrismaticJoint.apply(this, arguments);
      if (this.constructor === b2PrismaticJoint) this.b2PrismaticJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2PrismaticJoint = b2PrismaticJoint;

   function b2PrismaticJointDef() {
      b2PrismaticJointDef.b2PrismaticJointDef.apply(this, arguments);
      if (this.constructor === b2PrismaticJointDef) this.b2PrismaticJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2PrismaticJointDef = b2PrismaticJointDef;

   function b2PulleyJoint() {
      b2PulleyJoint.b2PulleyJoint.apply(this, arguments);
      if (this.constructor === b2PulleyJoint) this.b2PulleyJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2PulleyJoint = b2PulleyJoint;

   function b2PulleyJointDef() {
      b2PulleyJointDef.b2PulleyJointDef.apply(this, arguments);
      if (this.constructor === b2PulleyJointDef) this.b2PulleyJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2PulleyJointDef = b2PulleyJointDef;

   function b2RevoluteJoint() {
      b2RevoluteJoint.b2RevoluteJoint.apply(this, arguments);
      if (this.constructor === b2RevoluteJoint) this.b2RevoluteJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2RevoluteJoint = b2RevoluteJoint;

   function b2RevoluteJointDef() {
      b2RevoluteJointDef.b2RevoluteJointDef.apply(this, arguments);
      if (this.constructor === b2RevoluteJointDef) this.b2RevoluteJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2RevoluteJointDef = b2RevoluteJointDef;

   function b2WeldJoint() {
      b2WeldJoint.b2WeldJoint.apply(this, arguments);
      if (this.constructor === b2WeldJoint) this.b2WeldJoint.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2WeldJoint = b2WeldJoint;

   function b2WeldJointDef() {
      b2WeldJointDef.b2WeldJointDef.apply(this, arguments);
      if (this.constructor === b2WeldJointDef) this.b2WeldJointDef.apply(this, arguments);
   };
   Box2D.Dynamics.Joints.b2WeldJointDef = b2WeldJointDef;
})(); //definitions
Box2D.postDefs = [];
(function () {
   var b2CircleShape = Box2D.Collision.Shapes.b2CircleShape,
      b2EdgeChainDef = Box2D.Collision.Shapes.b2EdgeChainDef,
      b2EdgeShape = Box2D.Collision.Shapes.b2EdgeShape,
      b2MassData = Box2D.Collision.Shapes.b2MassData,
      b2PolygonShape = Box2D.Collision.Shapes.b2PolygonShape,
      b2Shape = Box2D.Collision.Shapes.b2Shape,
      b2Color = Box2D.Common.b2Color,
      b2internal = Box2D.Common.b2internal,
      b2Settings = Box2D.Common.b2Settings,
      b2Mat22 = Box2D.Common.Math.b2Mat22,
      b2Mat33 = Box2D.Common.Math.b2Mat33,
      b2Math = Box2D.Common.Math.b2Math,
      b2Sweep = Box2D.Common.Math.b2Sweep,
      b2Transform = Box2D.Common.Math.b2Transform,
      b2Vec2 = Box2D.Common.Math.b2Vec2,
      b2Vec3 = Box2D.Common.Math.b2Vec3,
      b2AABB = Box2D.Collision.b2AABB,
      b2Bound = Box2D.Collision.b2Bound,
      b2BoundValues = Box2D.Collision.b2BoundValues,
      b2Collision = Box2D.Collision.b2Collision,
      b2ContactID = Box2D.Collision.b2ContactID,
      b2ContactPoint = Box2D.Collision.b2ContactPoint,
      b2Distance = Box2D.Collision.b2Distance,
      b2DistanceInput = Box2D.Collision.b2DistanceInput,
      b2DistanceOutput = Box2D.Collision.b2DistanceOutput,
      b2DistanceProxy = Box2D.Collision.b2DistanceProxy,
      b2DynamicTree = Box2D.Collision.b2DynamicTree,
      b2DynamicTreeBroadPhase = Box2D.Collision.b2DynamicTreeBroadPhase,
      b2DynamicTreeNode = Box2D.Collision.b2DynamicTreeNode,
      b2DynamicTreePair = Box2D.Collision.b2DynamicTreePair,
      b2Manifold = Box2D.Collision.b2Manifold,
      b2ManifoldPoint = Box2D.Collision.b2ManifoldPoint,
      b2Point = Box2D.Collision.b2Point,
      b2RayCastInput = Box2D.Collision.b2RayCastInput,
      b2RayCastOutput = Box2D.Collision.b2RayCastOutput,
      b2Segment = Box2D.Collision.b2Segment,
      b2SeparationFunction = Box2D.Collision.b2SeparationFunction,
      b2Simplex = Box2D.Collision.b2Simplex,
      b2SimplexCache = Box2D.Collision.b2SimplexCache,
      b2SimplexVertex = Box2D.Collision.b2SimplexVertex,
      b2TimeOfImpact = Box2D.Collision.b2TimeOfImpact,
      b2TOIInput = Box2D.Collision.b2TOIInput,
      b2WorldManifold = Box2D.Collision.b2WorldManifold,
      ClipVertex = Box2D.Collision.ClipVertex,
      Features = Box2D.Collision.Features,
      IBroadPhase = Box2D.Collision.IBroadPhase;

   b2AABB.b2AABB = function () {
      this.lowerBound = new b2Vec2();
      this.upperBound = new b2Vec2();
   };
   b2AABB.prototype.IsValid = function () {
      var dX = this.upperBound.x - this.lowerBound.x;
      var dY = this.upperBound.y - this.lowerBound.y;
      var valid = dX >= 0.0 && dY >= 0.0;
      valid = valid && this.lowerBound.IsValid() && this.upperBound.IsValid();
      return valid;
   }
   b2AABB.prototype.GetCenter = function () {
      return new b2Vec2((this.lowerBound.x + this.upperBound.x) / 2, (this.lowerBound.y + this.upperBound.y) / 2);
   }
   b2AABB.prototype.GetExtents = function () {
      return new b2Vec2((this.upperBound.x - this.lowerBound.x) / 2, (this.upperBound.y - this.lowerBound.y) / 2);
   }
   b2AABB.prototype.Contains = function (aabb) {
      var result = true;
      result = result && this.lowerBound.x <= aabb.lowerBound.x;
      result = result && this.lowerBound.y <= aabb.lowerBound.y;
      result = result && aabb.upperBound.x <= this.upperBound.x;
      result = result && aabb.upperBound.y <= this.upperBound.y;
      return result;
   }
   b2AABB.prototype.RayCast = function (output, input) {
      var tmin = (-Number.MAX_VALUE);
      var tmax = Number.MAX_VALUE;
      var pX = input.p1.x;
      var pY = input.p1.y;
      var dX = input.p2.x - input.p1.x;
      var dY = input.p2.y - input.p1.y;
      var absDX = Math.abs(dX);
      var absDY = Math.abs(dY);
      var normal = output.normal;
      var inv_d = 0;
      var t1 = 0;
      var t2 = 0;
      var t3 = 0;
      var s = 0; {
         if (absDX < Number.MIN_VALUE) {
            if (pX < this.lowerBound.x || this.upperBound.x < pX) return false;
         }
         else {
            inv_d = 1.0 / dX;
            t1 = (this.lowerBound.x - pX) * inv_d;
            t2 = (this.upperBound.x - pX) * inv_d;
            s = (-1.0);
            if (t1 > t2) {
               t3 = t1;
               t1 = t2;
               t2 = t3;
               s = 1.0;
            }
            if (t1 > tmin) {
               normal.x = s;
               normal.y = 0;
               tmin = t1;
            }
            tmax = Math.min(tmax, t2);
            if (tmin > tmax) return false;
         }
      } {
         if (absDY < Number.MIN_VALUE) {
            if (pY < this.lowerBound.y || this.upperBound.y < pY) return false;
         }
         else {
            inv_d = 1.0 / dY;
            t1 = (this.lowerBound.y - pY) * inv_d;
            t2 = (this.upperBound.y - pY) * inv_d;
            s = (-1.0);
            if (t1 > t2) {
               t3 = t1;
               t1 = t2;
               t2 = t3;
               s = 1.0;
            }
            if (t1 > tmin) {
               normal.y = s;
               normal.x = 0;
               tmin = t1;
            }
            tmax = Math.min(tmax, t2);
            if (tmin > tmax) return false;
         }
      }
      output.fraction = tmin;
      return true;
   }
   b2AABB.prototype.TestOverlap = function (other) {
      var d1X = other.lowerBound.x - this.upperBound.x;
      var d1Y = other.lowerBound.y - this.upperBound.y;
      var d2X = this.lowerBound.x - other.upperBound.x;
      var d2Y = this.lowerBound.y - other.upperBound.y;
      if (d1X > 0.0 || d1Y > 0.0) return false;
      if (d2X > 0.0 || d2Y > 0.0) return false;
      return true;
   }
   b2AABB.Combine = function (aabb1, aabb2) {
      var aabb = new b2AABB();
      aabb.Combine(aabb1, aabb2);
      return aabb;
   }
   b2AABB.prototype.Combine = function (aabb1, aabb2) {
      this.lowerBound.x = Math.min(aabb1.lowerBound.x, aabb2.lowerBound.x);
      this.lowerBound.y = Math.min(aabb1.lowerBound.y, aabb2.lowerBound.y);
      this.upperBound.x = Math.max(aabb1.upperBound.x, aabb2.upperBound.x);
      this.upperBound.y = Math.max(aabb1.upperBound.y, aabb2.upperBound.y);
   }
   b2Bound.b2Bound = function () {};
   b2Bound.prototype.IsLower = function () {
      return (this.value & 1) == 0;
   }
   b2Bound.prototype.IsUpper = function () {
      return (this.value & 1) == 1;
   }
   b2Bound.prototype.Swap = function (b) {
      var tempValue = this.value;
      var tempProxy = this.proxy;
      var tempStabbingCount = this.stabbingCount;
      this.value = b.value;
      this.proxy = b.proxy;
      this.stabbingCount = b.stabbingCount;
      b.value = tempValue;
      b.proxy = tempProxy;
      b.stabbingCount = tempStabbingCount;
   }
   b2BoundValues.b2BoundValues = function () {};
   b2BoundValues.prototype.b2BoundValues = function () {
      this.lowerValues = new Vector_a2j_Number();
      this.lowerValues[0] = 0.0;
      this.lowerValues[1] = 0.0;
      this.upperValues = new Vector_a2j_Number();
      this.upperValues[0] = 0.0;
      this.upperValues[1] = 0.0;
   }
   b2Collision.b2Collision = function () {};
   b2Collision.ClipSegmentToLine = function (vOut, vIn, normal, offset) {
      if (offset === undefined) offset = 0;
      var cv;
      var numOut = 0;
      cv = vIn[0];
      var vIn0 = cv.v;
      cv = vIn[1];
      var vIn1 = cv.v;
      var distance0 = normal.x * vIn0.x + normal.y * vIn0.y - offset;
      var distance1 = normal.x * vIn1.x + normal.y * vIn1.y - offset;
      if (distance0 <= 0.0) vOut[numOut++].Set(vIn[0]);
      if (distance1 <= 0.0) vOut[numOut++].Set(vIn[1]);
      if (distance0 * distance1 < 0.0) {
         var interp = distance0 / (distance0 - distance1);
         cv = vOut[numOut];
         var tVec = cv.v;
         tVec.x = vIn0.x + interp * (vIn1.x - vIn0.x);
         tVec.y = vIn0.y + interp * (vIn1.y - vIn0.y);
         cv = vOut[numOut];
         var cv2;
         if (distance0 > 0.0) {
            cv2 = vIn[0];
            cv.id = cv2.id;
         }
         else {
            cv2 = vIn[1];
            cv.id = cv2.id;
         }++numOut;
      }
      return numOut;
   }
   b2Collision.EdgeSeparation = function (poly1, xf1, edge1, poly2, xf2) {
      if (edge1 === undefined) edge1 = 0;
      var count1 = parseInt(poly1.m_vertexCount);
      var vertices1 = poly1.m_vertices;
      var normals1 = poly1.m_normals;
      var count2 = parseInt(poly2.m_vertexCount);
      var vertices2 = poly2.m_vertices;
      var tMat;
      var tVec;
      tMat = xf1.R;
      tVec = normals1[edge1];
      var normal1WorldX = (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var normal1WorldY = (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tMat = xf2.R;
      var normal1X = (tMat.col1.x * normal1WorldX + tMat.col1.y * normal1WorldY);
      var normal1Y = (tMat.col2.x * normal1WorldX + tMat.col2.y * normal1WorldY);
      var index = 0;
      var minDot = Number.MAX_VALUE;
      for (var i = 0; i < count2; ++i) {
         tVec = vertices2[i];
         var dot = tVec.x * normal1X + tVec.y * normal1Y;
         if (dot < minDot) {
            minDot = dot;
            index = i;
         }
      }
      tVec = vertices1[edge1];
      tMat = xf1.R;
      var v1X = xf1.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var v1Y = xf1.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tVec = vertices2[index];
      tMat = xf2.R;
      var v2X = xf2.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var v2Y = xf2.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      v2X -= v1X;
      v2Y -= v1Y;
      var separation = v2X * normal1WorldX + v2Y * normal1WorldY;
      return separation;
   }
   b2Collision.FindMaxSeparation = function (edgeIndex, poly1, xf1, poly2, xf2) {
      var count1 = parseInt(poly1.m_vertexCount);
      var normals1 = poly1.m_normals;
      var tVec;
      var tMat;
      tMat = xf2.R;
      tVec = poly2.m_centroid;
      var dX = xf2.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var dY = xf2.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tMat = xf1.R;
      tVec = poly1.m_centroid;
      dX -= xf1.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      dY -= xf1.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      var dLocal1X = (dX * xf1.R.col1.x + dY * xf1.R.col1.y);
      var dLocal1Y = (dX * xf1.R.col2.x + dY * xf1.R.col2.y);
      var edge = 0;
      var maxDot = (-Number.MAX_VALUE);
      for (var i = 0; i < count1; ++i) {
         tVec = normals1[i];
         var dot = (tVec.x * dLocal1X + tVec.y * dLocal1Y);
         if (dot > maxDot) {
            maxDot = dot;
            edge = i;
         }
      }
      var s = b2Collision.EdgeSeparation(poly1, xf1, edge, poly2, xf2);
      var prevEdge = parseInt(edge - 1 >= 0 ? edge - 1 : count1 - 1);
      var sPrev = b2Collision.EdgeSeparation(poly1, xf1, prevEdge, poly2, xf2);
      var nextEdge = parseInt(edge + 1 < count1 ? edge + 1 : 0);
      var sNext = b2Collision.EdgeSeparation(poly1, xf1, nextEdge, poly2, xf2);
      var bestEdge = 0;
      var bestSeparation = 0;
      var increment = 0;
      if (sPrev > s && sPrev > sNext) {
         increment = (-1);
         bestEdge = prevEdge;
         bestSeparation = sPrev;
      }
      else if (sNext > s) {
         increment = 1;
         bestEdge = nextEdge;
         bestSeparation = sNext;
      }
      else {
         edgeIndex[0] = edge;
         return s;
      }
      while (true) {
         if (increment == (-1)) edge = bestEdge - 1 >= 0 ? bestEdge - 1 : count1 - 1;
         else edge = bestEdge + 1 < count1 ? bestEdge + 1 : 0;s = b2Collision.EdgeSeparation(poly1, xf1, edge, poly2, xf2);
         if (s > bestSeparation) {
            bestEdge = edge;
            bestSeparation = s;
         }
         else {
            break;
         }
      }
      edgeIndex[0] = bestEdge;
      return bestSeparation;
   }
   b2Collision.FindIncidentEdge = function (c, poly1, xf1, edge1, poly2, xf2) {
      if (edge1 === undefined) edge1 = 0;
      var count1 = parseInt(poly1.m_vertexCount);
      var normals1 = poly1.m_normals;
      var count2 = parseInt(poly2.m_vertexCount);
      var vertices2 = poly2.m_vertices;
      var normals2 = poly2.m_normals;
      var tMat;
      var tVec;
      tMat = xf1.R;
      tVec = normals1[edge1];
      var normal1X = (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var normal1Y = (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tMat = xf2.R;
      var tX = (tMat.col1.x * normal1X + tMat.col1.y * normal1Y);
      normal1Y = (tMat.col2.x * normal1X + tMat.col2.y * normal1Y);
      normal1X = tX;
      var index = 0;
      var minDot = Number.MAX_VALUE;
      for (var i = 0; i < count2; ++i) {
         tVec = normals2[i];
         var dot = (normal1X * tVec.x + normal1Y * tVec.y);
         if (dot < minDot) {
            minDot = dot;
            index = i;
         }
      }
      var tClip;
      var i1 = parseInt(index);
      var i2 = parseInt(i1 + 1 < count2 ? i1 + 1 : 0);
      tClip = c[0];
      tVec = vertices2[i1];
      tMat = xf2.R;
      tClip.v.x = xf2.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      tClip.v.y = xf2.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tClip.id.features.referenceEdge = edge1;
      tClip.id.features.incidentEdge = i1;
      tClip.id.features.incidentVertex = 0;
      tClip = c[1];
      tVec = vertices2[i2];
      tMat = xf2.R;
      tClip.v.x = xf2.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      tClip.v.y = xf2.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tClip.id.features.referenceEdge = edge1;
      tClip.id.features.incidentEdge = i2;
      tClip.id.features.incidentVertex = 1;
   }
   b2Collision.MakeClipPointVector = function () {
      var r = new Vector(2);
      r[0] = new ClipVertex();
      r[1] = new ClipVertex();
      return r;
   }
   b2Collision.CollidePolygons = function (manifold, polyA, xfA, polyB, xfB) {
      var cv;
      manifold.m_pointCount = 0;
      var totalRadius = polyA.m_radius + polyB.m_radius;
      var edgeA = 0;
      b2Collision.s_edgeAO[0] = edgeA;
      var separationA = b2Collision.FindMaxSeparation(b2Collision.s_edgeAO, polyA, xfA, polyB, xfB);
      edgeA = b2Collision.s_edgeAO[0];
      if (separationA > totalRadius) return;
      var edgeB = 0;
      b2Collision.s_edgeBO[0] = edgeB;
      var separationB = b2Collision.FindMaxSeparation(b2Collision.s_edgeBO, polyB, xfB, polyA, xfA);
      edgeB = b2Collision.s_edgeBO[0];
      if (separationB > totalRadius) return;
      var poly1;
      var poly2;
      var xf1;
      var xf2;
      var edge1 = 0;
      var flip = 0;
      var k_relativeTol = 0.98;
      var k_absoluteTol = 0.001;
      var tMat;
      if (separationB > k_relativeTol * separationA + k_absoluteTol) {
         poly1 = polyB;
         poly2 = polyA;
         xf1 = xfB;
         xf2 = xfA;
         edge1 = edgeB;
         manifold.m_type = b2Manifold.e_faceB;
         flip = 1;
      }
      else {
         poly1 = polyA;
         poly2 = polyB;
         xf1 = xfA;
         xf2 = xfB;
         edge1 = edgeA;
         manifold.m_type = b2Manifold.e_faceA;
         flip = 0;
      }
      var incidentEdge = b2Collision.s_incidentEdge;
      b2Collision.FindIncidentEdge(incidentEdge, poly1, xf1, edge1, poly2, xf2);
      var count1 = parseInt(poly1.m_vertexCount);
      var vertices1 = poly1.m_vertices;
      var local_v11 = vertices1[edge1];
      var local_v12;
      if (edge1 + 1 < count1) {
         local_v12 = vertices1[parseInt(edge1 + 1)];
      }
      else {
         local_v12 = vertices1[0];
      }
      var localTangent = b2Collision.s_localTangent;
      localTangent.Set(local_v12.x - local_v11.x, local_v12.y - local_v11.y);
      localTangent.Normalize();
      var localNormal = b2Collision.s_localNormal;
      localNormal.x = localTangent.y;
      localNormal.y = (-localTangent.x);
      var planePoint = b2Collision.s_planePoint;
      planePoint.Set(0.5 * (local_v11.x + local_v12.x), 0.5 * (local_v11.y + local_v12.y));
      var tangent = b2Collision.s_tangent;
      tMat = xf1.R;
      tangent.x = (tMat.col1.x * localTangent.x + tMat.col2.x * localTangent.y);
      tangent.y = (tMat.col1.y * localTangent.x + tMat.col2.y * localTangent.y);
      var tangent2 = b2Collision.s_tangent2;
      tangent2.x = (-tangent.x);
      tangent2.y = (-tangent.y);
      var normal = b2Collision.s_normal;
      normal.x = tangent.y;
      normal.y = (-tangent.x);
      var v11 = b2Collision.s_v11;
      var v12 = b2Collision.s_v12;
      v11.x = xf1.position.x + (tMat.col1.x * local_v11.x + tMat.col2.x * local_v11.y);
      v11.y = xf1.position.y + (tMat.col1.y * local_v11.x + tMat.col2.y * local_v11.y);
      v12.x = xf1.position.x + (tMat.col1.x * local_v12.x + tMat.col2.x * local_v12.y);
      v12.y = xf1.position.y + (tMat.col1.y * local_v12.x + tMat.col2.y * local_v12.y);
      var frontOffset = normal.x * v11.x + normal.y * v11.y;
      var sideOffset1 = (-tangent.x * v11.x) - tangent.y * v11.y + totalRadius;
      var sideOffset2 = tangent.x * v12.x + tangent.y * v12.y + totalRadius;
      var clipPoints1 = b2Collision.s_clipPoints1;
      var clipPoints2 = b2Collision.s_clipPoints2;
      var np = 0;
      np = b2Collision.ClipSegmentToLine(clipPoints1, incidentEdge, tangent2, sideOffset1);
      if (np < 2) return;
      np = b2Collision.ClipSegmentToLine(clipPoints2, clipPoints1, tangent, sideOffset2);
      if (np < 2) return;
      manifold.m_localPlaneNormal.SetV(localNormal);
      manifold.m_localPoint.SetV(planePoint);
      var pointCount = 0;
      for (var i = 0; i < b2Settings.b2_maxManifoldPoints; ++i) {
         cv = clipPoints2[i];
         var separation = normal.x * cv.v.x + normal.y * cv.v.y - frontOffset;
         if (separation <= totalRadius) {
            var cp = manifold.m_points[pointCount];
            tMat = xf2.R;
            var tX = cv.v.x - xf2.position.x;
            var tY = cv.v.y - xf2.position.y;
            cp.m_localPoint.x = (tX * tMat.col1.x + tY * tMat.col1.y);
            cp.m_localPoint.y = (tX * tMat.col2.x + tY * tMat.col2.y);
            cp.m_id.Set(cv.id);
            cp.m_id.features.flip = flip;
            ++pointCount;
         }
      }
      manifold.m_pointCount = pointCount;
   }
   b2Collision.CollideCircles = function (manifold, circle1, xf1, circle2, xf2) {
      manifold.m_pointCount = 0;
      var tMat;
      var tVec;
      tMat = xf1.R;
      tVec = circle1.m_p;
      var p1X = xf1.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var p1Y = xf1.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      tMat = xf2.R;
      tVec = circle2.m_p;
      var p2X = xf2.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var p2Y = xf2.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      var dX = p2X - p1X;
      var dY = p2Y - p1Y;
      var distSqr = dX * dX + dY * dY;
      var radius = circle1.m_radius + circle2.m_radius;
      if (distSqr > radius * radius) {
         return;
      }
      manifold.m_type = b2Manifold.e_circles;
      manifold.m_localPoint.SetV(circle1.m_p);
      manifold.m_localPlaneNormal.SetZero();
      manifold.m_pointCount = 1;
      manifold.m_points[0].m_localPoint.SetV(circle2.m_p);
      manifold.m_points[0].m_id.key = 0;
   }
   b2Collision.CollidePolygonAndCircle = function (manifold, polygon, xf1, circle, xf2) {
      manifold.m_pointCount = 0;
      var tPoint;
      var dX = 0;
      var dY = 0;
      var positionX = 0;
      var positionY = 0;
      var tVec;
      var tMat;
      tMat = xf2.R;
      tVec = circle.m_p;
      var cX = xf2.position.x + (tMat.col1.x * tVec.x + tMat.col2.x * tVec.y);
      var cY = xf2.position.y + (tMat.col1.y * tVec.x + tMat.col2.y * tVec.y);
      dX = cX - xf1.position.x;
      dY = cY - xf1.position.y;
      tMat = xf1.R;
      var cLocalX = (dX * tMat.col1.x + dY * tMat.col1.y);
      var cLocalY = (dX * tMat.col2.x + dY * tMat.col2.y);
      var dist = 0;
      var normalIndex = 0;
      var separation = (-Number.MAX_VALUE);
      var radius = polygon.m_radius + circle.m_radius;
      var vertexCount = parseInt(polygon.m_vertexCount);
      var vertices = polygon.m_vertices;
      var normals = polygon.m_normals;
      for (var i = 0; i < vertexCount; ++i) {
         tVec = vertices[i];
         dX = cLocalX - tVec.x;
         dY = cLocalY - tVec.y;
         tVec = normals[i];
         var s = tVec.x * dX + tVec.y * dY;
         if (s > radius) {
            return;
         }
         if (s > separation) {
            separation = s;
            normalIndex = i;
         }
      }
      var vertIndex1 = parseInt(normalIndex);
      var vertIndex2 = parseInt(vertIndex1 + 1 < vertexCount ? vertIndex1 + 1 : 0);
      var v1 = vertices[vertIndex1];
      var v2 = vertices[vertIndex2];
      if (separation < Number.MIN_VALUE) {
         manifold.m_pointCount = 1;
         manifold.m_type = b2Manifold.e_faceA;
         manifold.m_localPlaneNormal.SetV(normals[normalIndex]);
         manifold.m_localPoint.x = 0.5 * (v1.x + v2.x);
         manifold.m_localPoint.y = 0.5 * (v1.y + v2.y);
         manifold.m_points[0].m_localPoint.SetV(circle.m_p);
         manifold.m_points[0].m_id.key = 0;
         return;
      }
      var u1 = (cLocalX - v1.x) * (v2.x - v1.x) + (cLocalY - v1.y) * (v2.y - v1.y);
      var u2 = (cLocalX - v2.x) * (v1.x - v2.x) + (cLocalY - v2.y) * (v1.y - v2.y);
      if (u1 <= 0.0) {
         if ((cLocalX - v1.x) * (cLocalX - v1.x) + (cLocalY - v1.y) * (cLocalY - v1.y) > radius * radius) return;
         manifold.m_pointCount = 1;
         manifold.m_type = b2Manifold.e_faceA;
         manifold.m_localPlaneNormal.x = cLocalX - v1.x;
         manifold.m_localPlaneNormal.y = cLocalY - v1.y;
         manifold.m_localPlaneNormal.Normalize();
         manifold.m_localPoint.SetV(v1);
         manifold.m_points[0].m_localPoint.SetV(circle.m_p);
         manifold.m_points[0].m_id.key = 0;
      }
      else if (u2 <= 0) {
         if ((cLocalX - v2.x) * (cLocalX - v2.x) + (cLocalY - v2.y) * (cLocalY - v2.y) > radius * radius) return;
         manifold.m_pointCount = 1;
         manifold.m_type = b2Manifold.e_faceA;
         manifold.m_localPlaneNormal.x = cLocalX - v2.x;
         manifold.m_localPlaneNormal.y = cLocalY - v2.y;
         manifold.m_localPlaneNormal.Normalize();
         manifold.m_localPoint.SetV(v2);
         manifold.m_points[0].m_localPoint.SetV(circle.m_p);
         manifold.m_points[0].m_id.key = 0;
      }
      else {
         var faceCenterX = 0.5 * (v1.x + v2.x);
         var faceCenterY = 0.5 * (v1.y + v2.y);
         separation = (cLocalX - faceCenterX) * normals[vertIndex1].x + (cLocalY - faceCenterY) * normals[vertIndex1].y;
         if (separation > radius) return;
         manifold.m_pointCount = 1;
         manifold.m_type = b2Manifold.e_faceA;
         manifold.m_localPlaneNormal.x = normals[vertIndex1].x;
         manifold.m_localPlaneNormal.y = normals[vertIndex1].y;
         manifold.m_localPlaneNormal.Normalize();
         manifold.m_localPoint.Set(faceCenterX, faceCenterY);
         manifold.m_points[0].m_localPoint.SetV(circle.m_p);
         manifold.m_points[0].m_id.key = 0;
      }
   }
   b2Collision.TestOverlap = function (a, b) {
      var t1 = b.lowerBound;
      var t2 = a.upperBound;
      var d1X = t1.x - t2.x;
      var d1Y = t1.y - t2.y;
      t1 = a.lowerBound;
      t2 = b.upperBound;
      var d2X = t1.x - t2.x;
      var d2Y = t1.y - t2.y;
      if (d1X > 0.0 || d1Y > 0.0) return false;
      if (d2X > 0.0 || d2Y > 0.0) return false;
      return true;
   }
   Box2D.postDefs.push(function () {
      Box2D.Collision.b2Collision.s_incidentEdge = b2Collision.MakeClipPointVector();
      Box2D.Collision.b2Collision.s_clipPoints1 = b2Collision.MakeClipPointVector();
      Box2D.Collision.b2Collision.s_clipPoints2 = b2Collision.MakeClipPointVector();
      Box2D.Collision.b2Collision.s_edgeAO = new Vector_a2j_Number(1);
      Box2D.Collision.b2Collision.s_edgeBO = new Vector_a2j_Number(1);
      Box2D.Collision.b2Collision.s_localTangent = new b2Vec2();
      Box2D.Collision.b2Collision.s_localNormal = new b2Vec2();
      Box2D.Collision.b2Collision.s_planePoint = new b2Vec2();
      Box2D.Collision.b2Collision.s_normal = new b2Vec2();
      Box2D.Collision.b2Collision.s_tangent = new b2Vec2();
      Box2D.Collision.b2Collision.s_tangent2 = new b2Vec2();
      Box2D.Collision.b2Collision.s_v11 = new b2Vec2();
      Box2D.Collision.b2Collision.s_v12 = new b2Vec2();
      Box2D.Collision.b2Collision.b2CollidePolyTempVec = new b2Vec2();
      Box2D.Collision.b2Collision.b2_nullFeature = 0x000000ff;
   });
   b2ContactID.b2ContactID = function () {
      this.features = new Features();
   };
   b2ContactID.prototype.b2ContactID = function () {
      this.features._m_id = this;
   }
   b2ContactID.prototype.Set = function (id) {
      this.key = id._key;
   }
   b2ContactID.prototype.Copy = function () {
      var id = new b2ContactID();
      id.key = this.key;
      return id;
   }
   Object.defineProperty(b2ContactID.prototype, 'key', {
      enumerable: false,
      configurable: true,
      get: function () {
         return this._key;
      }
   });
   Object.defineProperty(b2ContactID.prototype, 'key', {
      enumerable: false,
      configurable: true,
      set: function (value) {
         if (value === undefined) value = 0;
         this._key = value;
         this.features._referenceEdge = this._key & 0x000000ff;
         this.features._incidentEdge = ((this._key & 0x0000ff00) >> 8) & 0x000000ff;
         this.features._incidentVertex = ((this._key & 0x00ff0000) >> 16) & 0x000000ff;
         this.features._flip = ((this._key & 0xff000000) >> 24) & 0x000000ff;
      }
   });
   b2ContactPoint.b2ContactPoint = function () {
      this.position = new b2Vec2();
      this.velocity = new b2Vec2();
      this.normal = new b2Vec2();
      this.id = new b2ContactID();
   };
   b2Distance.b2Distance = function () {};
   b2Distance.Distance = function (output, cache, input) {
      ++b2Distance.b2_gjkCalls;
      var proxyA = input.proxyA;
      var proxyB = input.proxyB;
      var transformA = input.transformA;
      var transformB = input.transformB;
      var simplex = b2Distance.s_simplex;
      simplex.ReadCache(cache, proxyA, transformA, proxyB, transformB);
      var vertices = simplex.m_