constructor( mesh, world, bodyA, bodyB, params, manager ) {

			this.mesh = mesh;
			this.world = world;
			this.bodyA = bodyA;
			this.bodyB = bodyB;
			this.params = params;
			this.manager = manager;
			this.constraint = null;

			this._init();

		}
@param {THREE.SkinnedMesh} mesh
@param {Ammo.btDiscreteDynamicsWorld} world
@param {RigidBody} bodyA
@param {RigidBody} bodyB
@param {Object} params
@param {ResourceManager} manager