public OverlapFilterCallback()
        {
            _needBroadphaseCollision = NeedBroadphaseCollisionUnmanaged;
            IntPtr native = btOverlapFilterCallbackWrapper_new(Marshal.GetFunctionPointerForDelegate(_needBroadphaseCollision));

            InitializeUserOwned(native);
        }
 public OverlapFilterCallback()
 {
     _needBroadphaseCollision = NeedBroadphaseCollisionUnmanaged;
     _native = btOverlapFilterCallbackWrapper_new(Marshal.GetFunctionPointerForDelegate(_needBroadphaseCollision));
 }