Feature request: Helper that allows constraining to be inside a polygon (that may have holes)

[mkv123]

This is a request for adding support for using arbitrary polygons as the constraint edges and adding a postprocessing pass to remove edges that are not inside the polygon or that are in the holes of the polygon.

[Fil]

Here's a notebook showing how it could work: https://observablehq.com/@fil/polygon-triangulation

[kninnug]

Thank you for the clarification, @Fil.

This seems to be outside my intention for this library: it doesn't add or remove edges. I might try to implement this, but as a separate project.

Looks like poly2tri can already do it though.