Frank Yang

See https://github.com/nmwsharp/geometry-central/pull/135 for a potential solution, where we provide a callback for the user to fix up their own containers depending on which halfedges are lost.

Personally, I actually haven't found cause to use any of the packaged matrix libraries that go with geometry central---the basic Vector3 struct it provides for vertex positions is quite enough,...

Probably both, but my main issue is that the quadric error simplification algorithm currently throws an exception in that case (because a vertex has degree 2); it’s in collapseEdgeTriangular() I...