Howard Trickey
5f71b1edd5
Adds two new output modes to the CDT api which detect and remove holes. A hole is a face from which a ray shot to the outside intersects an even number of constraint edges, except we don't count constraint edges in the same connected region of faces, where a region is connected via non-constraint edges. These modes are useful for filling in outlines meant to represent text characters and the like. Original patch was from Erik Abrahamsson, modified by me to work with the "valid Bmesh" output type too. I also added tests for the new modes.