
FLT_EPSILON was too small to use when checking if the edge collapse result is an error. add invert_m3_m3_ex(), invert_m3_ex() functiosn which take an epsilon to check the determinant, saves calculating it twice per edge collapse.
FLT_EPSILON was too small to use when checking if the edge collapse result is an error. add invert_m3_m3_ex(), invert_m3_ex() functiosn which take an epsilon to check the determinant, saves calculating it twice per edge collapse.