[Boost-users] [Boost.Polygon] support for polygons with holes

I'm playing around with Boost.Polygon and I'm wondering what functionality is supported for the polygon_with_holes concept. Specifically the boolean operators. For example, can I create a polygon_set with polygon_with_holes. I would like to punch a hole in a polygon and get a polygon with a hole as supposed to a key holed contour. Similarily, when combining the following rectangles: p += rectangle_data<int>(0, 0, 100, 10); p += rectangle_data<int>(90, 0, 100, 100); p += rectangle_data<int>(0, 90, 100, 100); p += rectangle_data<int>(0, 0, 10, 100); I would like to end up with +-----+ | | | +-+ | | | | | | +-+ | | | +-----+ as opposed to +-----+ | | | +-+ | | | | | | +-+ | | | | +---+-+