public static Vertices LineSegmentPolygonIntersect(ref Point2D point1, ref Point2D point2, Polygon polygon)
{
Vertices intersectionPoints = new Vertices();
int count = polygon.Vertices.Count - (polygon.isClosed() ? 0 : 1);
for (int i = 0; i < count; i++)
{
Point2D point;
if (LineIntersect(polygon.Vertices[i], polygon.Vertices[polygon.Vertices.NextIndex(i)], point1, point2, true, true, out point))
{
intersectionPoints.Add(point);
}
}
return intersectionPoints;
}
