public static bool Intersects(Sprite3D s, Vector2 pointer, Viewport v, Camera cam)
{
Vector3 nearPoint = new Vector3(pointer, 0);
Vector3 farPoint = new Vector3(pointer, 1);
nearPoint = v.Unproject(nearPoint, cam.Projection, cam.View, Matrix.Identity);
farPoint = v.Unproject(farPoint, cam.Projection, cam.View, Matrix.Identity);
Vector3 direction = farPoint - nearPoint;
direction.Normalize();
Ray r = new Ray(nearPoint, direction);
BoundingSphere bs = s.GetBoundingSphere();
return (bs.Intersects(r) != null) ? true : false;
}
