Problem with Difference Operator handling multiple paths.

[JohnHiltonDevelop]

I am currently generating two PathsD objects:

PathsD subj = new PathsD();
PathsD clip = new PathsD();

The subject represents a quadrilateral, and the clipping represents a history of all previous quadrilateral positions (capped at a maximum of 60), each with its own path.

However, when the clipping polygon becomes dense with lines and self-intersections, the Difference operator is unable to handle it effectively. I have tried applying a union operator to the clipping polygon however that brought its own issues.

I would like to know if this is a limitation with the library or this should be able to be handled.

Thanks.

Video Showcasing the Issue:
https://github.com/user-attachments/assets/2a82e301-f261-4917-8335-51da8d658114

Red: Clipping Polygon
Green: Subject Polygon
Blue Difference Operator Results

[AngusJohnson]

John.
I won't be able to help you unless you prove a very simple (ie single) clipping operation that is returning an incorrect value.