/**
* Return a new mesh by intersecting @lhs with @rhs. This operation
* is non-commutative, so set @lhs and @rhs accordingly.
*/
public static Mesh Intersect(GameObject lhs, GameObject rhs)
{
CSG_Model csg_model_a = new CSG_Model(lhs);
CSG_Model csg_model_b = new CSG_Model(rhs);
CSG_Node a = new CSG_Node(csg_model_a.ToPolygons());
CSG_Node b = new CSG_Node(csg_model_b.ToPolygons());
List <CSG_Polygon> polygons = CSG_Node.Intersect(a, b).AllPolygons();
CSG_Model result = new CSG_Model(polygons);
return(result.ToMesh());
}