Tamito Kajiyama
e9eed190e8
A motivating example of the problem the present solution aims to address is a quad face such that three of the four vertices are colinear (i.e., they are lying on a line). Depending on how this quad is separated into two triangles, one of them can be a degenerate triangle. Degenerate triangles of this form are easy to avoid by rotating the diagonal edge of quad faces without affecting the visual outcome. The fix implemented in this commit tries to address degenerate triangles in this way.