public static IEnumerable <int> GroupBoundaryEdges(DMesh3 mesh)
{
int N = mesh.MaxEdgeID;
for (int i = 0; i < N; ++i)
{
if (mesh.IsEdge(i))
{
if (mesh.IsGroupBoundaryEdge(i))
{
yield return(i);
}
}
}
}
// for all mesh boundary edges, disable flip/split/collapse
// for all mesh boundary vertices, pin in current position
public static void FixAllGroupBoundaryEdges(MeshConstraints cons, DMesh3 mesh, bool bPinVertices)
{
int NE = mesh.MaxEdgeID;
for (int ei = 0; ei < NE; ++ei)
{
if (mesh.IsEdge(ei) && mesh.IsGroupBoundaryEdge(ei))
{
cons.SetOrUpdateEdgeConstraint(ei, EdgeConstraint.FullyConstrained);
if (bPinVertices)
{
Index2i ev = mesh.GetEdgeV(ei);
cons.SetOrUpdateVertexConstraint(ev.a, VertexConstraint.Pinned);
cons.SetOrUpdateVertexConstraint(ev.b, VertexConstraint.Pinned);
}
}
}
}
