Decimater ModRoundness alway collapses
In ModRoundnessT.hh in line 151 and 173 the first parameter calling roundness() "vector_cast(_ci.p1)" is the same than C but should be the Vertex of the second face NOT connected to the collapsed edge.
In ModRoundnessT.hh in line 151 and 173 the first parameter calling roundness() "vector_cast(_ci.p1)" is the same than C but should be the Vertex of the second face NOT connected to the collapsed edge.