Contains for polygons with holes

[jeffreydking]

The p.Contains(pt) logic for polygons with holes may return bad results.

Context: I have not been able to find documentation for creating a polygon with holes. I assume that you simply continue to add call p.Add(pt) for the points of the holes inside the polygon.

If my assumption is correct, then false line segments are created between the boundary and contained holes (or between successive holes). If a raycast intersects with an odd number of these false segments, the wrong result is returned.

If my assumption is incorrect, better documentation on how to create polygons with holes would be appreciated.