public PhysicsWorld(PhysicsDebugDraw debugDraw)
 {
     //   collisionSystem.UseTriangleMeshNormal = true;
     world          = new World(collisionSystem);
     this.debugDraw = debugDraw;
 }
 public PhysicsWorld(PhysicsDebugDraw debugDraw)
 {
     collisionSystem.UseTriangleMeshNormal = true;
     world = new World(collisionSystem);
     this.debugDraw = debugDraw;
 }