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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              
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var	transferableMessage = self.webkitPostMessage || self.postMessage,
	
	// enum
	MESSAGE_TYPES = {
		WORLDREPORT: 0,
		COLLISIONREPORT: 1,
		VEHICLEREPORT: 2,
		CONSTRAINTREPORT: 3
	},
	
	// temp variables
	_object,
	_vector,
	_transform,
	
	// functions
	public_functions = {},
	getShapeFromCache,
	setShapeCache,
	createShape,
	reportWorld,
	reportVehicles,
	reportCollisions,
	reportConstraints,
	
	// world variables
	fixedTimeStep, // used when calling stepSimulation
	rateLimit, // sets whether or not to sync the simulation rate with fixedTimeStep
	last_simulation_time,
	last_simulation_duration = 0,
	world,
	transform,
	_vec3_1,
	_vec3_2,
	_vec3_3,
	_quat,
	// private cache
	_objects = {},
	_vehicles = {},
	_constraints = {},
	_materials = {},
	_objects_ammo = {},
	_num_objects = 0,
	_num_wheels = 0,
	_num_constraints = 0,
	_object_shapes = {},

	// The following objects are to track objects that ammo.js doesn't clean
	// up. All are cleaned up when they're corresponding body is destroyed.
	// Unfortunately, it's very difficult to get at these objects from the
	// body, so we have to track them ourselves.
	_motion_states = {}, 
	// Don't need to worry about it for cached shapes.
  _noncached_shapes = {},
	// A body with a compound shape always has a regular shape as well, so we
	// have track them separately.
  _compound_shapes = {}, 
	
	// object reporting
	REPORT_CHUNKSIZE, // report array is increased in increments of this chunk size
	
	WORLDREPORT_ITEMSIZE = 14, // how many float values each reported item needs
	worldreport,

	COLLISIONREPORT_ITEMSIZE = 5, // one float for each object id, and a Vec3 contact normal
	collisionreport,

	VEHICLEREPORT_ITEMSIZE = 9, // vehicle id, wheel index, 3 for position, 4 for rotation
	vehiclereport,

	CONSTRAINTREPORT_ITEMSIZE = 6, // constraint id, offset object, offset, applied impulse
	constraintreport;

var ab = new ArrayBuffer( 1 );

transferableMessage( ab, [ab] );
var SUPPORT_TRANSFERABLE = ( ab.byteLength === 0 );

getShapeFromCache = function ( cache_key ) {
	if ( _object_shapes[ cache_key ] !== undefined ) {
		return _object_shapes[ cache_key ];
	}
	return null;
};

setShapeCache = function ( cache_key, shape ) {
	_object_shapes[ cache_key ] = shape;
}

createShape = function( description ) {
	var cache_key, shape;
	
	_transform.setIdentity();
	switch ( description.type ) {
		case 'plane':
			cache_key = 'plane_' + description.normal.x + '_' + description.normal.y + '_' + description.normal.z;
			if ( ( shape = getShapeFromCache( cache_key ) ) === null ) {
				_vec3_1.setX(description.normal.x);
				_vec3_1.setY(description.normal.y);
				_vec3_1.setZ(description.normal.z);
				shape = new Ammo.btStaticPlaneShape(_vec3_1, 0 );
				setShapeCache( cache_key, shape );
			}
			break;
		
		case 'box':
			cache_key = 'box_' + description.width + '_' + description.height + '_' + description.depth;
			if ( ( shape = getShapeFromCache( cache_key ) ) === null ) {
				_vec3_1.setX(description.width / 2);
				_vec3_1.setY(description.height / 2);
				_vec3_1.setZ(description.depth / 2);
				shape = new Ammo.btBoxShape(_vec3_1);
				setShapeCache( cache_key, shape );
			}
			break;
		
		case 'sphere':
			cache_key = 'sphere_' + description.radius;
			if ( ( shape = getShapeFromCache( cache_key ) ) === null ) {
				shape = new Ammo.btSphereShape( description.radius );
				setShapeCache( cache_key, shape );
			}
			break;
		
		case 'cylinder':
			cache_key = 'cylinder_' + description.width + '_' + description.height + '_' + description.depth;
			if ( ( shape = getShapeFromCache( cache_key ) ) === null ) {
				_vec3_1.setX(description.width / 2);
				_vec3_1.setY(description.height / 2);
				_vec3_1.setZ(description.depth / 2);
				shape = new Ammo.btCylinderShape(_vec3_1);
				setShapeCache( cache_key, shape );
			}
			break;
		
		case 'capsule':
			cache_key = 'capsule_' + description.radius + '_' + description.height;
			if ( ( shape = getShapeFromCache( cache_key ) ) === null ) {
				// In Bullet, capsule height excludes the end spheres
				shape = new Ammo.btCapsuleShape( description.radius, description.height - 2 * description.radius );
				setShapeCache( cache_key, shape );
			}
			break;
		
		case 'cone':
			cache_key = 'cone_' + description.radius + '_' + description.height;
			if ( ( shape = getShapeFromCache( cache_key ) ) === null ) {
				shape = new Ammo.btConeShape( description.radius, description.height );
				setShapeCache( cache_key, shape );
			}
			break;
		
		case 'concave':
			var i, triangle, triangle_mesh = new Ammo.btTriangleMesh;
			if (!description.triangles.length) return false

			for ( i = 0; i < description.triangles.length; i++ ) {
				triangle = description.triangles[i];
				
				_vec3_1.setX(triangle[0].x);
				_vec3_1.setY(triangle[0].y);
				_vec3_1.setZ(triangle[0].z);

				_vec3_2.setX(triangle[1].x);
				_vec3_2.setY(triangle[1].y);
				_vec3_2.setZ(triangle[1].z);

				_vec3_3.setX(triangle[2].x);
				_vec3_3.setY(triangle[2].y);
				_vec3_3.setZ(triangle[2].z);
				
				triangle_mesh.addTriangle(
					_vec3_1,
					_vec3_2,
					_vec3_3,
					true
				);
			}

			shape = new Ammo.btBvhTriangleMeshShape(
				triangle_mesh,
				true,
				true
			);
			_noncached_shapes[description.id] = shape;
			break;
		
		case 'convex':
			var i, point, shape = new Ammo.btConvexHullShape;
			for ( i = 0; i < description.points.length; i++ ) {
				point = description.points[i];
				
				_vec3_1.setX(point.x);
				_vec3_1.setY(point.y);
				_vec3_1.setZ(point.z);

				shape.addPoint(_vec3_1);
				
			}
			_noncached_shapes[description.id] = shape;
			break;

		case 'heightfield':

			var ptr = Ammo.allocate(4 * description.xpts * description.ypts, "float", Ammo.ALLOC_NORMAL);

			for (var f = 0; f < description.points.length; f++) {
				Ammo.setValue(ptr + f,  description.points[f]  , 'float');
			}

			shape = new Ammo.btHeightfieldTerrainShape(
					description.xpts,
					description.ypts,
					ptr,
					1,
					-description.absMaxHeight,
					description.absMaxHeight,
					2,
					0,
					false
				);

			_vec3_1.setX(description.xsize/(description.xpts - 1));
			_vec3_1.setY(description.ysize/(description.ypts - 1));
			_vec3_1.setZ(1);
			
			shape.setLocalScaling(_vec3_1);
			_noncached_shapes[description.id] = shape;
			break;
		
		default:
			// Not recognized
			return;
			break;
	}
	
	return shape;
};

public_functions.init = function( params ) {
	importScripts( params.ammo );
	
	_transform = new Ammo.btTransform;
	_vec3_1 = new Ammo.btVector3(0,0,0);
	_vec3_2 = new Ammo.btVector3(0,0,0);
	_vec3_3 = new Ammo.btVector3(0,0,0);
	_quat = new Ammo.btQuaternion(0,0,0,0);
	
	REPORT_CHUNKSIZE = params.reportsize || 50;
	if ( SUPPORT_TRANSFERABLE ) {
		// Transferable messages are supported, take advantage of them with TypedArrays
		worldreport = new Float32Array(2 + REPORT_CHUNKSIZE * WORLDREPORT_ITEMSIZE); // message id + # of objects to report + chunk size * # of values per object
		collisionreport = new Float32Array(2 + REPORT_CHUNKSIZE * COLLISIONREPORT_ITEMSIZE); // message id + # of collisions to report + chunk size * # of values per object
		vehiclereport = new Float32Array(2 + REPORT_CHUNKSIZE * VEHICLEREPORT_ITEMSIZE); // message id + # of vehicles to report + chunk size * # of values per object
		constraintreport = new Float32Array(2 + REPORT_CHUNKSIZE * CONSTRAINTREPORT_ITEMSIZE); // message id + # of constraints to report + chunk size * # of values per object
	} else {
		// Transferable messages are not supported, send data as normal arrays
		worldreport = [];
		collisionreport = [];
		vehiclereport = [];
		constraintreport = [];
	}
	worldreport[0] = MESSAGE_TYPES.WORLDREPORT;
	collisionreport[0] = MESSAGE_TYPES.COLLISIONREPORT;
	vehiclereport[0] = MESSAGE_TYPES.VEHICLEREPORT;
	constraintreport[0] = MESSAGE_TYPES.CONSTRAINTREPORT;
	
	var collisionConfiguration = new Ammo.btDefaultCollisionConfiguration,
		dispatcher = new Ammo.btCollisionDispatcher( collisionConfiguration ),
		solver = new Ammo.btSequentialImpulseConstraintSolver,
		broadphase;
	
	if ( !params.broadphase ) params.broadphase = { type: 'dynamic' };
	switch ( params.broadphase.type ) {
		case 'sweepprune':
			
			_vec3_1.setX(params.broadphase.aabbmin.x);
			_vec3_1.setY(params.broadphase.aabbmin.y);
			_vec3_1.setZ(params.broadphase.aabbmin.z);
			
			_vec3_2.setX(params.broadphase.aabbmax.x);
			_vec3_2.setY(params.broadphase.aabbmax.y);
			_vec3_2.setZ(params.broadphase.aabbmax.z);
			
			broadphase = new Ammo.btAxisSweep3(
				_vec3_1,
				_vec3_2
			);
			
			break;
		
		case 'dynamic':
		default:
			broadphase = new Ammo.btDbvtBroadphase;
			break;
	}
	
	world = new Ammo.btDiscreteDynamicsWorld( dispatcher, broadphase, solver, collisionConfiguration );
	
	fixedTimeStep = params.fixedTimeStep;
	rateLimit = params.rateLimit;

	transferableMessage({ cmd: 'worldReady' });
};

public_functions.registerMaterial = function( description ) {
	_materials[ description.id ] = description;
};

public_functions.unRegisterMaterial = function( description ) {
	delete _materials[ description.id ];
};

public_functions.setFixedTimeStep = function( description ) {
	fixedTimeStep = description;
};

public_functions.setGravity = function( description ) {
	_vec3_1.setX(description.x);
	_vec3_1.setY(description.y);
	_vec3_1.setZ(description.z);
	world.setGravity(_vec3_1);
};

public_functions.addObject = function( description ) {
	
	var i,
	localInertia, shape, motionState, rbInfo, body;

shape = createShape( description );
if (!shape) return
// If there are children then this is a compound shape
if ( description.children ) {
	var compound_shape = new Ammo.btCompoundShape, _child;
	compound_shape.addChildShape( _transform, shape );
	
	for ( i = 0; i < description.children.length; i++ ) {
		_child = description.children[i];
		
		var trans = new Ammo.btTransform;
		trans.setIdentity();
		
		_vec3_1.setX(_child.position_offset.x);
		_vec3_1.setY(_child.position_offset.y);
		_vec3_1.setZ(_child.position_offset.z);
		trans.setOrigin(_vec3_1); 
		
		_quat.setX(_child.rotation.x);
		_quat.setY(_child.rotation.y);
		_quat.setZ(_child.rotation.z);
		_quat.setW(_child.rotation.w);
		trans.setRotation(_quat); 
		
		shape = createShape( description.children[i] );
		compound_shape.addChildShape( trans, shape );
		Ammo.destroy(trans);
	}
	
	shape = compound_shape;
    _compound_shapes[ description.id ] = shape;
	}
	_vec3_1.setX(0);
	_vec3_1.setY(0);
	_vec3_1.setZ(0);
	shape.calculateLocalInertia( description.mass, _vec3_1 );
	
	_transform.setIdentity();
	
	_vec3_2.setX(description.position.x);
	_vec3_2.setY(description.position.y);
	_vec3_2.setZ(description.position.z);
	_transform.setOrigin(_vec3_2);
	
	_quat.setX(description.rotation.x);
	_quat.setY(description.rotation.y);
	_quat.setZ(description.rotation.z);
	_quat.setW(description.rotation.w);
	_transform.setRotation(_quat);
	
	motionState = new Ammo.btDefaultMotionState( _transform ); // #TODO: btDefaultMotionState supports center of mass offset as second argument - implement
	rbInfo = new Ammo.btRigidBodyConstructionInfo( description.mass, motionState, shape, _vec3_1 );
	
	if ( description.materialId !== undefined ) {
		rbInfo.set_m_friction( _materials[ description.materialId ].friction );
		rbInfo.set_m_restitution( _materials[ description.materialId ].restitution );
	}
	
	body = new Ammo.btRigidBody( rbInfo );
	Ammo.destroy(rbInfo);
	
	if ( typeof description.collision_flags !== 'undefined' ) {
		body.setCollisionFlags( description.collision_flags );
	}
	
	world.addRigidBody( body );
	
	body.id = description.id;
	_objects[ body.id ] = body;
	_motion_states[ body.id ] = motionState;
	
	var ptr = body.a != undefined ? body.a : body.ptr;
	_objects_ammo[ptr] = body.id;
	_num_objects++;
	
	transferableMessage({ cmd: 'objectReady', params: body.id });
};

public_functions.addVehicle = function( description ) {
	var vehicle_tuning = new Ammo.btVehicleTuning(),
		vehicle;

	vehicle_tuning.set_m_suspensionStiffness( description.suspension_stiffness );
	vehicle_tuning.set_m_suspensionCompression( description.suspension_compression );
	vehicle_tuning.set_m_suspensionDamping( description.suspension_damping );
	vehicle_tuning.set_m_maxSuspensionTravelCm( description.max_suspension_travel );
	vehicle_tuning.set_m_maxSuspensionForce( description.max_suspension_force );

	vehicle = new Ammo.btRaycastVehicle( vehicle_tuning, _objects[ description.rigidBody ], new Ammo.btDefaultVehicleRaycaster( world ) );
	vehicle.tuning = vehicle_tuning;

	_objects[ description.rigidBody ].setActivationState( 4 );
	vehicle.setCoordinateSystem( 0, 1, 2 );

	world.addVehicle( vehicle );
	_vehicles[ description.id ] = vehicle;
};
public_functions.removeVehicle = function( description ) {
	delete _vehicles[ description.id ];
};

public_functions.addWheel = function( description ) {
	if ( _vehicles[description.id] !== undefined ) {
		var tuning = _vehicles[description.id].tuning;
		if ( description.tuning !== undefined ) {
			tuning = new Ammo.btVehicleTuning();
			tuning.set_m_suspensionStiffness( description.tuning.suspension_stiffness );
			tuning.set_m_suspensionCompression( description.tuning.suspension_compression );
			tuning.set_m_suspensionDamping( description.tuning.suspension_damping );
			tuning.set_m_maxSuspensionTravelCm( description.tuning.max_suspension_travel );
			tuning.set_m_maxSuspensionForce( description.tuning.max_suspension_force );
		}
		
		_vec3_1.setX(description.connection_point.x);
		_vec3_1.setY(description.connection_point.y);
		_vec3_1.setZ(description.connection_point.z);
		
		_vec3_2.setX(description.wheel_direction.x);
		_vec3_2.setY(description.wheel_direction.y);
		_vec3_2.setZ(description.wheel_direction.z);
		
		_vec3_3.setX(description.wheel_axle.x);
		_vec3_3.setY(description.wheel_axle.y);
		_vec3_3.setZ(description.wheel_axle.z);
		
		_vehicles[description.id].addWheel(
			_vec3_1,
			_vec3_2,
			_vec3_3,
			description.suspension_rest_length,
			description.wheel_radius,
			tuning,
			description.is_front_wheel
		);
	}

	_num_wheels++;

	if ( SUPPORT_TRANSFERABLE ) {
		vehiclereport = new Float32Array(1 + _num_wheels * VEHICLEREPORT_ITEMSIZE); // message id & ( # of objects to report * # of values per object )
		vehiclereport[0] = MESSAGE_TYPES.VEHICLEREPORT;
	} else {
		vehiclereport = [ MESSAGE_TYPES.VEHICLEREPORT ];
	}
};

public_functions.setSteering = function( details ) {
	if ( _vehicles[details.id] !== undefined ) {
		_vehicles[details.id].setSteeringValue( details.steering, details.wheel );
	}
};
public_functions.setBrake = function( details ) {
	if ( _vehicles[details.id] !== undefined ) {
		_vehicles[details.id].setBrake( details.brake, details.wheel );
	}
};
public_functions.applyEngineForce = function( details ) {
	if ( _vehicles[details.id] !== undefined ) {
		_vehicles[details.id].applyEngineForce( details.force, details.wheel );
	}
};

public_functions.removeObject = function( details ) {
	world.removeRigidBody( _objects[details.id] );
	Ammo.destroy(_objects[details.id]);
	Ammo.destroy(_motion_states[details.id]);
    if (_compound_shapes[details.id]) Ammo.destroy(_compound_shapes[details.id]);
	if (_noncached_shapes[details.id]) Ammo.destroy(_noncached_shapes[details.id]);
	var ptr = _objects[details.id].a != undefined ? _objects[details.id].a : _objects[details.id].ptr;
	delete _objects_ammo[ptr];
	delete _objects[details.id];
	delete _motion_states[details.id];
    if (_compound_shapes[details.id]) delete _compound_shapes[details.id];
	if (_noncached_shapes[details.id]) delete _noncached_shapes[details.id];
	_num_objects--;
};

public_functions.updateTransform = function( details ) {
	_object = _objects[details.id];
	_object.getMotionState().getWorldTransform( _transform );
	
	if ( details.pos ) {
		_vec3_1.setX(details.pos.x);
		_vec3_1.setY(details.pos.y);
		_vec3_1.setZ(details.pos.z);
		_transform.setOrigin(_vec3_1);
	}
	
	if ( details.quat ) {
		_quat.setX(details.quat.x);
		_quat.setY(details.quat.y);
		_quat.setZ(details.quat.z);
		_quat.setW(details.quat.w);
		_transform.setRotation(_quat);
	}
	
	_object.setWorldTransform( _transform );
	_object.activate();
};

public_functions.updateMass = function( details ) {
	// #TODO: changing a static object into dynamic is buggy
	_object = _objects[details.id];
	
	// Per http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?p=&f=9&t=3663#p13816
	world.removeRigidBody( _object );
	
	_vec3_1.setX(0);
	_vec3_1.setY(0);
	_vec3_1.setZ(0);
	
	_object.setMassProps( details.mass, _vec3_1 );
	world.addRigidBody( _object );
	_object.activate();
};

public_functions.applyCentralImpulse = function ( details ) {
	
	_vec3_1.setX(details.x);
	_vec3_1.setY(details.y);
	_vec3_1.setZ(details.z);
	
	_objects[details.id].applyCentralImpulse(_vec3_1);
	_objects[details.id].activate();
};

public_functions.applyImpulse = function ( details ) {

	_vec3_1.setX(details.impulse_x);
	_vec3_1.setY(details.impulse_y);
	_vec3_1.setZ(details.impulse_z);
	
	_vec3_2.setX(details.x);
	_vec3_2.setY(details.y);
	_vec3_2.setZ(details.z);

	_objects[details.id].applyImpulse(
		_vec3_1,
		_vec3_2
	);
	_objects[details.id].activate();
};

public_functions.applyCentralForce = function ( details ) {
	
	_vec3_1.setX(details.x);
	_vec3_1.setY(details.y);
	_vec3_1.setZ(details.z);
	
	_objects[details.id].applyCentralForce(_vec3_1);
	_objects[details.id].activate();
};

public_functions.applyForce = function ( details ) {
	
	_vec3_1.setX(details.impulse_x);
	_vec3_1.setY(details.impulse_y);
	_vec3_1.setZ(details.impulse_z);
	
	_vec3_2.setX(details.x);
	_vec3_2.setY(details.y);
	_vec3_2.setZ(details.z);
	
	_objects[details.id].applyForce(
		_vec3_1,
		_vec3_2
	);	
	_objects[details.id].activate();
};

public_functions.setAngularVelocity = function ( details ) {

	_vec3_1.setX(details.x);
	_vec3_1.setY(details.y);
	_vec3_1.setZ(details.z);
	
	_objects[details.id].setAngularVelocity(
		_vec3_1
	);
	_objects[details.id].activate();
};

public_functions.setLinearVelocity = function ( details ) {

	_vec3_1.setX(details.x);
	_vec3_1.setY(details.y);
	_vec3_1.setZ(details.z);
	
	_objects[details.id].setLinearVelocity(
		_vec3_1
	);
	_objects[details.id].activate();
};

public_functions.setAngularFactor = function ( details ) {

	_vec3_1.setX(details.x);
	_vec3_1.setY(details.y);
	_vec3_1.setZ(details.z);
	
	_objects[details.id].setAngularFactor(
			_vec3_1
	);
};

public_functions.setLinearFactor = function ( details ) {

	_vec3_1.setX(details.x);
	_vec3_1.setY(details.y);
	_vec3_1.setZ(details.z);
	
	_objects[details.id].setLinearFactor(
		_vec3_1
	);
};

public_functions.setDamping = function ( details ) {
	_objects[details.id].setDamping( details.linear, details.angular );
};

public_functions.setCcdMotionThreshold = function ( details ) {
	_objects[details.id].setCcdMotionThreshold( details.threshold );
};

public_functions.setCcdSweptSphereRadius = function ( details ) {
	_objects[details.id].setCcdSweptSphereRadius( details.radius );
};

public_functions.addConstraint = function ( details ) {
	var constraint;

	switch ( details.type ) {
		
		case 'point':
			if ( details.objectb === undefined ) {
				
				_vec3_1.setX(details.positiona.x);
				_vec3_1.setY(details.positiona.y);
				_vec3_1.setZ(details.positiona.z);
				
				constraint = new Ammo.btPoint2PointConstraint(
					_objects[ details.objecta ],
					_vec3_1
				);
			} else {
				
				_vec3_1.setX(details.positiona.x);
				_vec3_1.setY(details.positiona.y);
				_vec3_1.setZ(details.positiona.z);
				
				_vec3_2.setX(details.positionb.x);
				_vec3_2.setY(details.positionb.y);
				_vec3_2.setZ(details.positionb.z);
				
				constraint = new Ammo.btPoint2PointConstraint(
					_objects[ details.objecta ],
					_objects[ details.objectb ],
					_vec3_1,
					_vec3_2
				);
			}
			break;
		
		case 'hinge':
			if ( details.objectb === undefined ) {
				
				_vec3_1.setX(details.positiona.x);
				_vec3_1.setY(details.positiona.y);
				_vec3_1.setZ(details.positiona.z);
				
				_vec3_2.setX(details.axis.x);
				_vec3_2.setY(details.axis.y);
				_vec3_2.setZ(details.axis.z);
				
				constraint = new Ammo.btHingeConstraint(
					_objects[ details.objecta ],
					_vec3_1,
					_vec3_2
				);
			} else {
				
				_vec3_1.setX(details.positiona.x);
				_vec3_1.setY(details.positiona.y);
				_vec3_1.setZ(details.positiona.z);
				
				_vec3_2.setX(details.positionb.x);
				_vec3_2.setY(details.positionb.y);
				_vec3_2.setZ(details.positionb.z);

				_vec3_3.setX(details.axis.x);
				_vec3_3.setY(details.axis.y);
				_vec3_3.setZ(details.axis.z);
				
				constraint = new Ammo.btHingeConstraint(
					_objects[ details.objecta ],
					_objects[ details.objectb ],
					_vec3_1,
					_vec3_2,
					_vec3_3,
					_vec3_3
				);
			}
			break;
		
		case 'slider':
			var transforma, transformb, rotation;
		
			transforma = new Ammo.btTransform();
			
			_vec3_1.setX(details.positiona.x);
			_vec3_1.setY(details.positiona.y);
			_vec3_1.setZ(details.positiona.z);
			
			transforma.setOrigin(_vec3_1);
			
			var rotation = transforma.getRotation();
			rotation.setEuler( details.axis.x, details.axis.y, details.axis.z );
			transforma.setRotation( rotation );
			
			if ( details.objectb ) {
				transformb = new Ammo.btTransform();

				_vec3_2.setX(details.positionb.x);
				_vec3_2.setY(details.positionb.y);
				_vec3_2.setZ(details.positionb.z);

				transformb.setOrigin(_vec3_2);
				
				rotation = transformb.getRotation();
				rotation.setEuler( details.axis.x, details.axis.y, details.axis.z );
				transformb.setRotation( rotation );
				
				constraint = new Ammo.btSliderConstraint(
					_objects[ details.objecta ],
					_objects[ details.objectb ],
					transforma,
					transformb,
					true
				);
			} else {
				constraint = new Ammo.btSliderConstraint(
					_objects[ details.objecta ],
					transforma,
					true
				);
			}
			
			Ammo.destroy(transforma);
			if (transformb != undefined) {
				Ammo.destroy(transformb);	
			}
			break;
		
		case 'conetwist':
			var transforma, transformb;
			
			transforma = new Ammo.btTransform();
			transforma.setIdentity();
			
			transformb = new Ammo.btTransform();
			transformb.setIdentity();
			
			_vec3_1.setX(details.positiona.x);
			_vec3_1.setY(details.positiona.y);
			_vec3_1.setZ(details.positiona.z);
			
			_vec3_2.setX(details.positionb.x);
			_vec3_2.setY(details.positionb.y);
			_vec3_2.setZ(details.positionb.z);
			
			transforma.setOrigin(_vec3_1);
			transformb.setOrigin(_vec3_2);
			
			var rotation = transforma.getRotation();
			rotation.setEulerZYX( -details.axisa.z, -details.axisa.y, -details.axisa.x );
			transforma.setRotation( rotation );
			
			rotation = transformb.getRotation();
			rotation.setEulerZYX( -details.axisb.z, -details.axisb.y, -details.axisb.x );
			transformb.setRotation( rotation );
			
			constraint = new Ammo.btConeTwistConstraint(
				_objects[ details.objecta ],
				_objects[ details.objectb ],
				transforma,
				transformb
			);
			
			constraint.setLimit( Math.PI, 0, Math.PI );
			
			Ammo.destroy(transforma);
			Ammo.destroy(transformb);	
			
			break;
		
		case 'dof':
			var transforma, transformb, rotation;
		
			transforma = new Ammo.btTransform();
			transforma.setIdentity();
			
			_vec3_1.setX(details.positiona.x);
			_vec3_1.setY(details.positiona.y);
			_vec3_1.setZ(details.positiona.z);
			
			transforma.setOrigin(_vec3_1 );
			
			rotation = transforma.getRotation();
			rotation.setEulerZYX( -details.axisa.z, -details.axisa.y, -details.axisa.x );
			transforma.setRotation( rotation );
			
			if ( details.objectb ) {
				transformb = new Ammo.btTransform();
				transformb.setIdentity();
				
				_vec3_2.setX(details.positionb.x);
				_vec3_2.setY(details.positionb.y);
				_vec3_2.setZ(details.positionb.z);
				
				transformb.setOrigin(_vec3_2);
				
				rotation = transformb.getRotation();
				rotation.setEulerZYX( -details.axisb.z, -details.axisb.y, -details.axisb.x );
				transformb.setRotation( rotation );
				
				constraint = new Ammo.btGeneric6DofConstraint(
					_objects[ details.objecta ],
					_objects[ details.objectb ],
					transforma,
					transformb
				);
			} else {
				constraint = new Ammo.btGeneric6DofConstraint(
					_objects[ details.objecta ],
					transforma
				);
			}
			Ammo.destroy(transforma);
			if (transformb != undefined) {
				Ammo.destroy(transformb);	
			}
			break;
		
		default:
			return;
		
	};
	
	world.addConstraint( constraint );

	constraint.enableFeedback();
	_constraints[ details.id ] = constraint;
	_num_constraints++;

	if ( SUPPORT_TRANSFERABLE ) {
		constraintreport = new Float32Array(1 + _num_constraints * CONSTRAINTREPORT_ITEMSIZE); // message id & ( # of objects to report * # of values per object )
		constraintreport[0] = MESSAGE_TYPES.CONSTRAINTREPORT;
	} else {
		constraintreport = [ MESSAGE_TYPES.CONSTRAINTREPORT ];
	}
};

public_functions.removeConstraint = function( details ) {
	var constraint = _constraints[ details.id ];
	if ( constraint !== undefined ) {
		world.removeConstraint( constraint );
		delete _constraints[ details.id ];
		_num_constraints--;
	}
};

public_functions.constraint_setBreakingImpulseThreshold = function( details ) {
	var constraint = _constraints[ details.id ];
	if ( constraint !== undefind ) {
		constraint.setBreakingImpulseThreshold( details.threshold );
	}
};

public_functions.simulate = function simulate( params ) {
	if ( world ) {
		params = params || {};
		
		if ( !params.timeStep ) {
			if ( last_simulation_time ) {
				params.timeStep = 0;
				while ( params.timeStep + last_simulation_duration <= fixedTimeStep ) {
					params.timeStep = ( Date.now() - last_simulation_time ) / 1000; // time since last simulation
				}
			} else {
				params.timeStep = fixedTimeStep; // handle first frame
			}
		} else {
			if ( params.timeStep < fixedTimeStep ) {
				params.timeStep = fixedTimeStep;
			}
		}

		params.maxSubSteps = params.maxSubSteps || Math.ceil( params.timeStep / fixedTimeStep ); // If maxSubSteps is not defined, keep the simulation fully up to date

		last_simulation_duration = Date.now();
		world.stepSimulation( params.timeStep, params.maxSubSteps, fixedTimeStep );
		
		reportVehicles();
		reportCollisions();
		reportConstraints();
		reportWorld();
		
		last_simulation_duration = ( Date.now() - last_simulation_duration ) / 1000;
		last_simulation_time = Date.now();
	}
};


// Constraint functions
public_functions.hinge_setLimits = function( params ) {
	_constraints[ params.constraint ].setLimit( params.low, params.high, 0, params.bias_factor, params.relaxation_factor );
};
public_functions.hinge_enableAngularMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.enableAngularMotor( true, params.velocity, params.acceleration );
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.hinge_disableMotor = function( params ) {
	_constraints[ params.constraint ].enableMotor( false );
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};

public_functions.slider_setLimits = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setLowerLinLimit( params.lin_lower || 0 );
	constraint.setUpperLinLimit( params.lin_upper || 0 );
	
	constraint.setLowerAngLimit( params.ang_lower || 0 );
	constraint.setUpperAngLimit( params.ang_upper || 0 );
};
public_functions.slider_setRestitution = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setSoftnessLimLin( params.linear || 0 );
	constraint.setSoftnessLimAng( params.angular || 0 );
};
public_functions.slider_enableLinearMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setTargetLinMotorVelocity( params.velocity );
	constraint.setMaxLinMotorForce( params.acceleration );
	constraint.setPoweredLinMotor( true );
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.slider_disableLinearMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setPoweredLinMotor( false );
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.slider_enableAngularMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setTargetAngMotorVelocity( params.velocity );
	constraint.setMaxAngMotorForce( params.acceleration );
	constraint.setPoweredAngMotor( true );
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.slider_disableAngularMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setPoweredAngMotor( false );
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};

public_functions.conetwist_setLimit = function( params ) {
	_constraints[ params.constraint ].setLimit( params.z, params.y, params.x ); // ZYX order
};
public_functions.conetwist_enableMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.enableMotor( true );
	constraint.getRigidBodyA().activate();
	constraint.getRigidBodyB().activate();
};
public_functions.conetwist_setMaxMotorImpulse = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.setMaxMotorImpulse( params.max_impulse );
	constraint.getRigidBodyA().activate();
	constraint.getRigidBodyB().activate();
};
public_functions.conetwist_setMotorTarget = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	_quat.setX(params.x);
	_quat.setY(params.y);
	_quat.setZ(params.z);
	_quat.setW(params.w);
	
	constraint.setMotorTarget(_quat);
	
	constraint.getRigidBodyA().activate();
	constraint.getRigidBodyB().activate();
};
public_functions.conetwist_disableMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	constraint.enableMotor( false );
	constraint.getRigidBodyA().activate();
	constraint.getRigidBodyB().activate();
};

public_functions.dof_setLinearLowerLimit = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	_vec3_1.setX(params.x);
	_vec3_1.setY(params.y);
	_vec3_1.setZ(params.z);
	
	constraint.setLinearLowerLimit(_vec3_1);
	
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.dof_setLinearUpperLimit = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	_vec3_1.setX(params.x);
	_vec3_1.setY(params.y);
	_vec3_1.setZ(params.z);
	
	constraint.setLinearUpperLimit(_vec3_1);

	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.dof_setAngularLowerLimit = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	_vec3_1.setX(params.x);
	_vec3_1.setY(params.y);
	_vec3_1.setZ(params.z);
	
	constraint.setAngularLowerLimit(_vec3_1);
	
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {											
		constraint.getRigidBodyB().activate();
	}
};
public_functions.dof_setAngularUpperLimit = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	_vec3_1.setX(params.x);
	_vec3_1.setY(params.y);
	_vec3_1.setZ(params.z);
	
	constraint.setAngularUpperLimit(_vec3_1);
	
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.dof_enableAngularMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	var motor = constraint.getRotationalLimitMotor( params.which );
	motor.set_m_enableMotor( true );
	
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.dof_configureAngularMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	var motor = constraint.getRotationalLimitMotor( params.which );
	
	motor.set_m_loLimit( params.low_angle );
	motor.set_m_hiLimit( params.high_angle );
	motor.set_m_targetVelocity( params.velocity );
	motor.set_m_maxMotorForce( params.max_force );
	
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};
public_functions.dof_disableAngularMotor = function( params ) {
	var constraint = _constraints[ params.constraint ];
	
	var motor = constraint.getRotationalLimitMotor( params.which );
	motor.set_m_enableMotor( false );
	
	constraint.getRigidBodyA().activate();
	if ( constraint.getRigidBodyB() ) {
		constraint.getRigidBodyB().activate();
	}
};

reportWorld = function() {
	var index, object,
		transform, origin, rotation, 
		offset = 0,
		i = 0;
	
	if ( SUPPORT_TRANSFERABLE ) {
		if ( worldreport.length < 2 + _num_objects * WORLDREPORT_ITEMSIZE ) {
			worldreport = new Float32Array(
				2 + // message id & # objects in report
				( Math.ceil( _num_objects / REPORT_CHUNKSIZE ) * REPORT_CHUNKSIZE ) * WORLDREPORT_ITEMSIZE // # of values needed * item size
			);
			worldreport[0] = MESSAGE_TYPES.WORLDREPORT;
		}
	}
	
	worldreport[1] = _num_objects; // record how many objects we're reporting on

	//for ( i = 0; i < worldreport[1]; i++ ) {
	for ( index in _objects ) {
		if ( _objects.hasOwnProperty( index ) ) {
			object = _objects[index];
			
			// #TODO: we can't use center of mass transform when center of mass can change,
			//        but getMotionState().getWorldTransform() screws up on objects that have been moved
			//object.getMotionState().getWorldTransform( transform );
			transform = object.getCenterOfMassTransform(); 
			
			origin = transform.getOrigin(); 
			rotation = transform.getRotation();
			
			// add values to report
			offset = 2 + (i++) * WORLDREPORT_ITEMSIZE;
			
			worldreport[ offset ] = object.id;
			
			worldreport[ offset + 1 ] = origin.x();
			worldreport[ offset + 2 ] = origin.y();
			worldreport[ offset + 3 ] = origin.z();
			
			worldreport[ offset + 4 ] = rotation.x();
			worldreport[ offset + 5 ] = rotation.y();
			worldreport[ offset + 6 ] = rotation.z();
			worldreport[ offset + 7 ] = rotation.w();
			
			_vector = object.getLinearVelocity();
			worldreport[ offset + 8 ] = _vector.x();
			worldreport[ offset + 9 ] = _vector.y();
			worldreport[ offset + 10 ] = _vector.z();
			
			_vector = object.getAngularVelocity();
			worldreport[ offset + 11 ] = _vector.x();
			worldreport[ offset + 12 ] = _vector.y();
			worldreport[ offset + 13 ] = _vector.z();
		}
	}
	
	
	if ( SUPPORT_TRANSFERABLE ) {
		transferableMessage( worldreport.buffer, [worldreport.buffer] );
	} else {
		transferableMessage( worldreport );
	}
	
};

reportCollisions = function() {
	var i, offset,
		dp = world.getDispatcher(),
		num = dp.getNumManifolds(),
		manifold, num_contacts, j, pt,
		_collided = false;
	
	if ( SUPPORT_TRANSFERABLE ) {
		if ( collisionreport.length < 2 + num * COLLISIONREPORT_ITEMSIZE ) {
			collisionreport = new Float32Array(
				2 + // message id & # objects in report
				( Math.ceil( _num_objects / REPORT_CHUNKSIZE ) * REPORT_CHUNKSIZE ) * COLLISIONREPORT_ITEMSIZE // # of values needed * item size
			);
			collisionreport[0] = MESSAGE_TYPES.COLLISIONREPORT;
		}
	}
	
	collisionreport[1] = 0; // how many collisions we're reporting on
	
	for ( i = 0; i < num; i++ ) {
		manifold = dp.getManifoldByIndexInternal( i );
		
		num_contacts = manifold.getNumContacts();
		if ( num_contacts === 0 ) {
			continue;
		}
		
		for ( j = 0; j < num_contacts; j++ ) {
			pt = manifold.getContactPoint( j );
			//if ( pt.getDistance() < 0 ) {
				offset = 2 + (collisionreport[1]++) * COLLISIONREPORT_ITEMSIZE;
				collisionreport[ offset ] = _objects_ammo[ manifold.getBody0() ];
				collisionreport[ offset + 1 ] = _objects_ammo[ manifold.getBody1() ];

				_vector = pt.get_m_normalWorldOnB();
				collisionreport[ offset + 2 ] = _vector.x();
				collisionreport[ offset + 3 ] = _vector.y();
				collisionreport[ offset + 4 ] = _vector.z();
				break;
			//}
				
				transferableMessage( _objects_ammo );	
		
		}	
	}
	
	
	if ( SUPPORT_TRANSFERABLE ) {
		transferableMessage( collisionreport.buffer, [collisionreport.buffer] );
	} else {
		transferableMessage( collisionreport );
	}
};

reportVehicles = function() {
	var index, vehicle,
		transform, origin, rotation, 
		offset = 0,
		i = 0, j = 0;

	if ( SUPPORT_TRANSFERABLE ) {
		if ( vehiclereport.length < 2 + _num_wheels * VEHICLEREPORT_ITEMSIZE ) {
			vehiclereport = new Float32Array(
				2 + // message id & # objects in report
				( Math.ceil( _num_wheels / REPORT_CHUNKSIZE ) * REPORT_CHUNKSIZE ) * VEHICLEREPORT_ITEMSIZE // # of values needed * item size
			);
			vehiclereport[0] = MESSAGE_TYPES.VEHICLEREPORT;
		}
	}

	for ( index in _vehicles ) {
		if ( _vehicles.hasOwnProperty( index ) ) {
			vehicle = _vehicles[index];

			for ( j = 0; j < vehicle.getNumWheels(); j++ ) {

				//vehicle.updateWheelTransform( j, true );

				//transform = vehicle.getWheelTransformWS( j );
				transform = vehicle.getWheelInfo( j ).get_m_worldTransform(); 

				origin = transform.getOrigin(); 
				rotation = transform.getRotation(); 

				// add values to report
				offset = 1 + (i++) * VEHICLEREPORT_ITEMSIZE;

				vehiclereport[ offset ] = index;
				vehiclereport[ offset + 1 ] = j;

				vehiclereport[ offset + 2 ] = origin.x();
				vehiclereport[ offset + 3 ] = origin.y();
				vehiclereport[ offset + 4 ] = origin.z();

				vehiclereport[ offset + 5 ] = rotation.x();
				vehiclereport[ offset + 6 ] = rotation.y();
				vehiclereport[ offset + 7 ] = rotation.z();
				vehiclereport[ offset + 8 ] = rotation.w();

			}

		}
	}
	
	if ( j !== 0 ) {
		if ( SUPPORT_TRANSFERABLE ) {
			transferableMessage( vehiclereport.buffer, [vehiclereport.buffer] );
		} else {
			transferableMessage( vehiclereport );
		}
	}
};

reportConstraints = function() {
	var index, constraint,
		offset_body,
		transform, origin, 
		offset = 0,
		i = 0;

	if ( SUPPORT_TRANSFERABLE ) {
		if ( constraintreport.length < 2 + _num_constraints * CONSTRAINTREPORT_ITEMSIZE ) {
			constraintreport = new Float32Array(
				2 + // message id & # objects in report
				( Math.ceil( _num_constraints / REPORT_CHUNKSIZE ) * REPORT_CHUNKSIZE ) * CONSTRAINTREPORT_ITEMSIZE // # of values needed * item size
			);
			constraintreport[0] = MESSAGE_TYPES.CONSTRAINTREPORT;
		}
	}

	for ( index in _constraints ) {
		if ( _constraints.hasOwnProperty( index ) ) {
			constraint = _constraints[index];
			offset_body = constraint.getRigidBodyA();
			transform = constraint.getFrameOffsetA(); 
			origin = transform.getOrigin();

			// add values to report
			offset = 1 + (i++) * CONSTRAINTREPORT_ITEMSIZE;

			constraintreport[ offset ] = index;
			constraintreport[ offset + 1 ] = offset_body.id;
			constraintreport[ offset + 2 ] = origin.getX();
			constraintreport[ offset + 3 ] = origin.getY();
			constraintreport[ offset + 4 ] = origin.getZ();
			constraintreport[ offset + 5 ] = constraint.getAppliedImpulse();
		}
	}

	
	if ( i !== 0 ) {
		if ( SUPPORT_TRANSFERABLE ) {
			transferableMessage( constraintreport.buffer, [constraintreport.buffer] );
		} else {
			transferableMessage( constraintreport );
		}
	}
	
};

self.onmessage = function( event ) {
	
	if ( event.data instanceof Float32Array ) {
		// transferable object
		
		switch ( event.data[0] ) {
			case MESSAGE_TYPES.WORLDREPORT:
				worldreport = new Float32Array( event.data );
				break;

			case MESSAGE_TYPES.COLLISIONREPORT:
				collisionreport = new Float32Array( event.data );
				break;

			case MESSAGE_TYPES.VEHICLEREPORT:
				vehiclereport = new Float32Array( event.data );
				break;

			case MESSAGE_TYPES.CONSTRAINTREPORT:
				constraintreport = new Float32Array( event.data );
				break;
		}
		
		return;
	}
	
	if ( event.data.cmd && public_functions[event.data.cmd] ) {
		//if ( event.data.params.id !== undefined && _objects[event.data.params.id] === undefined && event.data.cmd !== 'addObject' && event.data.cmd !== 'registerMaterial' ) return;
		public_functions[event.data.cmd]( event.data.params );
	}
	
};
  
  
</script>
            
          
!
            
              body { 
  margin: 0; 
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#canvas_div { 
  width: 100%; 
  height: 100%;
}

#toss_icon_div {
  position: fixed;
  width: 60px;
  height: 60px;
  top: 40px;
  right: 50px;
}

#toss_icon_svg {
  position: relative;
  width: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  transition: width 150ms;
}
#toss_icon_svg:hover {
  width: 110%;
  cursor: pointer;
}
            
          
!
            
              

/////////////////////////////////////////////
//////////////   COIN TOSS   ////////////////
/////////////////////////////////////////////



/////---Sources---/////

var blob = new Blob( [document.querySelector('#physijs_worker').textContent] );
Physijs.scripts.worker = window.URL.createObjectURL(blob);
Physijs.scripts.ammo = 'https://chandlerprall.github.io/Physijs/examples/js/ammo.js';



/////---Settings---/////

var pennyDiameter = 40;
var pennyDropHeight = 250;
var gravity = -350;
var fr = 100;  // friction
var re = 100;  // restitution



/////---Initiation---/////

var pennyArray = [];

///HTML
//declares a renderer object
var renderer = new THREE.WebGLRenderer({ antialias: true });
//sets the canvas at double-size for higher resolution
renderer.setSize( window.innerWidth*2, window.innerHeight*2 );
//places the renderer canvas element inside the canvas_div element
var canvasDiv = document.getElementById("canvas_div");
canvasDiv.appendChild( renderer.domElement );
//gets the renderer canvas element 
var canvas = document.getElementsByTagName('canvas')[0];
//shrinks the canvas to the window's size while keeping high resolution
canvas.style.width = window.innerWidth + "px";
canvas.style.height = window.innerHeight + "px";


///physi.js scene
var scene = new Physijs.Scene;
scene.setGravity(new THREE.Vector3(0, gravity, 0));
scene.addEventListener('update', physicsUpdate);  // keeps physics engine in sync with renderer

///background
renderer.setClearColor (0xF2F2F2, 1);

///camera
var camera = new THREE.PerspectiveCamera(35, window.innerWidth/window.innerHeight, 1, 10000 );
camera.position.set( 0, 350, 350 );
scene.add( camera );

///lighting & shadows
var lightA1 = new THREE.AmbientLight(0xFFFFFF, 0.8);
scene.add(lightA1);
var lightD1 = new THREE.DirectionalLight( 0xFFFFFF, 0.3 );
lightD1.position.set( -250, 300, 150 );
lightD1.castShadow = true;
lightD1.shadow.camera.left = -500;
lightD1.shadow.camera.top = -500;
lightD1.shadow.camera.right = 500;
lightD1.shadow.camera.bottom = 500;
lightD1.shadow.camera.near = 1;
lightD1.shadow.camera.far = 700;
lightD1.shadow.mapSize.height = lightD1.shadow.mapSize.width = 1500;
scene.add( lightD1 );
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
// var helper = new THREE.CameraHelper( lightD1.shadow.camera );
// camera.position.set( 0, 1500, 1500 );
// scene.add( helper );



///---Platform---///

var platformGeometry = new THREE.PlaneGeometry( 1500, 1500 );
var platformMaterial = Physijs.createMaterial( 
  new THREE.MeshLambertMaterial({ color: 0xEEEEEE }), fr, re 
);
var platform = new Physijs.PlaneMesh(platformGeometry, platformMaterial );
platform.name = "platform";
platform.rotateX( - Math.PI / 2);
platform.receiveShadow = true;
scene.add(platform);



///---Penny---///

function Penny() {  //settings
  var penny;
  var radiusTop = pennyDiameter*.5;
  var radiusBottom = pennyDiameter*.5;
  var height = pennyDiameter*.1;
  var segments = 50;

  //array to store materials
  var materialsArray = [];

  //component images
  var headsImage = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/409445/penny_heads.png"
  var tailsImage = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/409445/penny_tails.png";

  //declares a new penny pennyGeometry
  var pennyGeometry = new THREE.CylinderGeometry( radiusTop, radiusBottom, height, segments );

  //declares a new three.js material for the side of the penny, then from it creates a new physi.js material that gives the material friction and restitution
  var pennyMaterialSide = Physijs.createMaterial( new THREE.MeshLambertMaterial({ color: 0x4F3E37 }), fr, re );
  materialsArray.push( pennyMaterialSide );  //(materialindex = 0)

  //declares a new loader for the heads image, assigns it to a material, and pushes to the materials array
  var headsLoader = new THREE.TextureLoader();
  headsLoader.load( headsImage, function ( texture ) { 
    var pennyMaterialTop = Physijs.createMaterial( new THREE.MeshBasicMaterial({ map: texture }), fr, re );
    materialsArray.push(pennyMaterialTop);  //(materialindex = 1)
  });

  //declares a new loader for the tails image, assigns it to a material, and pushes to the materials array
  var tailsLoader = new THREE.TextureLoader();
  tailsLoader.load( tailsImage, function ( texture ) { 
    var pennyMaterialBottom = Physijs.createMaterial( new THREE.MeshBasicMaterial({ map: texture }), fr, re );
    materialsArray.push(pennyMaterialBottom);  //(materialindex = 2)
  });

  //assigns each of the penny's faces to a material index
  var faceCount = pennyGeometry.faces.length;
  for ( i=0; i<faceCount; i++ ) {
    //first set of faces makes up the penny's side
    if ( i < segments*2 ) {
      pennyGeometry.faces[i].materialIndex = 0;
    //second set of faces makes up the penny's top
    } else if ( i < segments*3 ) {
      pennyGeometry.faces[i].materialIndex = 1;
    //third set of faces makes up the penny's bottom
    } else {
      pennyGeometry.faces[i].materialIndex = 2;
    }
  }

  // assigns the penny as a physi.js object and adds it to the scene
  penny = new Physijs.CylinderMesh( pennyGeometry, materialsArray, 5 );  //(last parameter is mass)
  penny.rotation.set( 1.57, 1.57, 0 );
  penny.castShadow = true;
  scene.add( penny );

  // lifts the penny and give it some random initial spin
  penny.__dirtyPosition = true;
  penny.__dirtyRotation = true;
  penny.position.y = pennyDropHeight;
  penny.setAngularVelocity(new THREE.Vector3(
    Math.random()*50-25, 
    Math.random()*30-15, 
    Math.random()*30-15
  ));

}


///---Supplimentary Functions---///

function physicsUpdate(){
  scene.simulate( undefined, 2 );
}	

function onWindowResize() {
	sceneHeight = window.innerHeight;
	sceneWidth = window.innerWidth;
	canvas.style.width = window.innerWidth + "px";
  canvas.style.height = window.innerHeight + "px";
	camera.aspect = sceneWidth/sceneHeight;
	camera.updateProjectionMatrix();
}

function addPenny() {
  pennyArray.push(new Penny);
}



///---Interaction---///

window.addEventListener('resize', onWindowResize, false);

$("#toss_icon_svg").click(function(){ addPenny(); });


///---Rendering---///

addPenny();

function render() {
  scene.simulate();
  camera.lookAt( platform.position.x , platform.position.y+65, platform.position.z );
  //camera.lookAt( penny.position.x , penny.position.y, penny.position.z );
  renderer.render( scene, camera);
  requestAnimationFrame( render );
};

render();

            
          
!
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