PolygonVisibility.ComputeVisibility AccessViolationException

[szlq]

I tryed the method PolygonVisibility.ComputeVisibility , but encountered a AccessViolationException error bug.

Here is my code:

var points = new Point2d[]
{
  new Point2d(0, 0),
  new Point2d(5, 0),
  new Point2d(5, 5),
  new Point2d(0, 5),
};

var poly = new Polygon2<EEK>(points);
var pv = new PolygonVisibility<EEK>();

var pt = new Point2d(0, 0);
Polygon2<EEK> result;
pv.ComputeVisibility(pt, poly, out result);

The error is System.AccessViolationException:“Attempted to read or write protected memory. This is often an indication that other memory is corrupt.” which appeared at pv.ComputeVisibility(pt, poly, out result);

[szlq]

I found that the viewpoint must be located inside Polygon, not on its boundary.
I changed the pt from Point2d(0,0) to Point2d(1,1) and it works well.