When building a new BREP kernel some times things get sticky and you need to do in depth interrogation of the triangulated result. I have come to the conclusion that it is not just about being able to write good software. You need to make it so that you can inspect and interrogate things to figure out the bugs and problems and not just at a surface level but all the nitty gritty details.

The triangle inspector lets me interrogate individual triangles and the topology around them.