float normals[128];
	int face_id; 
	core::vector3df origin(x,y,z);
	core::vector3df end(dx,dy,dz);
	core::matrix4 mat, inv;

	mat = ent->getAbsoluteTransformation();
	mat.getInverse( inv );
		//
	inv.transformVect( origin );
	inv.transformVect( end );

	float val = NewtonCollisionRayCast( collision ,&origin.X, &end.X, normals , &face_id);