private List<MeshSimplify_Point> preDivide(Mesh mesh)
{
Rhino.Geometry.Collections.MeshTopologyEdgeList el = mesh.TopologyEdges;
Rhino.Geometry.Collections.MeshTopologyVertexList vs = mesh.TopologyVertices;
List<MeshSimplify_Point> PointList = new List<MeshSimplify_Point>();
for (int i = 0; i < vs.Count; i++)
{
MeshSimplify_Point pt = new MeshSimplify_Point(vs[i]);
if (vs.MeshVertexIndices(i).Length > 0)
{
pt.N = mesh.Normals[vs.MeshVertexIndices(i)[0]];
}
else
{
pt.computeNormal(mesh);
}
PointList.Add(pt);
}
for (int i = 0; i < vs.Count; i++)
{
int[] index = vs.ConnectedTopologyVertices(i);
for (int j = 0; j < index.Length; j++)
{
PointList[i].refpoints.Add(PointList[index[j]]);
}
PointList[i].Sort();
}
/////////////////////////////////////////////////////
for (int i = 0; i < vs.Count; i++)
{
PointList[i].order = 0;
}
for (int i = 0; i < el.Count; i++)
{
if (el.GetConnectedFaces(i).Length == 1)
{
PointList[el.GetTopologyVertices(i).I].order = 5;
PointList[el.GetTopologyVertices(i).J].order = 5;
}
}
for (int i = 0; i < vs.Count; i++)
{
if (PointList[i].order == 5)
{
if (PointList[i].refpoints.Count != 3)
{
PointList[i].order = 4;
}
}
else
{
if (PointList[i].refpoints.Count != 4) PointList[i].order = 4;
}
}
//////////////////////////////////////////////////////////
for (int k = 0; k < PointList.Count; k++)
{
bool sign = true;
for (int i = 0; i < PointList.Count; i++)
{
if (PointList[i].order == 4)
{
sign = false;
PointList[i].order++;
if (PointList[i].refpoints.Count == 4)
{
if (PointList[i].refpoints[0].order == 5 && PointList[i].refpoints[2].order != 5) { PointList[i].refpoints[2].order = 1; }
if (PointList[i].refpoints[1].order == 5 && PointList[i].refpoints[3].order != 5) { PointList[i].refpoints[3].order = 1; }
if (PointList[i].refpoints[2].order == 5 && PointList[i].refpoints[0].order != 5) { PointList[i].refpoints[0].order = 1; }
if (PointList[i].refpoints[3].order == 5 && PointList[i].refpoints[1].order != 5) { PointList[i].refpoints[1].order = 1; }
}
else
{
for (int j = 0; j < PointList[i].refpoints.Count; j++)
{
PointList[i].refpoints[j].order++;
}
}
}
}
for (int i = 0; i < PointList.Count; i++)
{
if (PointList[i].order > 0 && PointList[i].order < 4) PointList[i].order = 4;
}
if (sign) { break; }
}
return PointList;
}
private List <MeshSimplify_Point> preDivide(Mesh mesh)
{
Rhino.Geometry.Collections.MeshTopologyEdgeList el = mesh.TopologyEdges;
Rhino.Geometry.Collections.MeshTopologyVertexList vs = mesh.TopologyVertices;
List <MeshSimplify_Point> PointList = new List <MeshSimplify_Point>();
for (int i = 0; i < vs.Count; i++)
{
MeshSimplify_Point pt = new MeshSimplify_Point(vs[i]);
if (vs.MeshVertexIndices(i).Length > 0)
{
pt.N = mesh.Normals[vs.MeshVertexIndices(i)[0]];
}
else
{
pt.computeNormal(mesh);
}
PointList.Add(pt);
}
for (int i = 0; i < vs.Count; i++)
{
int[] index = vs.ConnectedTopologyVertices(i);
for (int j = 0; j < index.Length; j++)
{
PointList[i].refpoints.Add(PointList[index[j]]);
}
PointList[i].Sort();
}
/////////////////////////////////////////////////////
for (int i = 0; i < vs.Count; i++)
{
PointList[i].order = 0;
}
for (int i = 0; i < el.Count; i++)
{
if (el.GetConnectedFaces(i).Length == 1)
{
PointList[el.GetTopologyVertices(i).I].order = 5;
PointList[el.GetTopologyVertices(i).J].order = 5;
}
}
for (int i = 0; i < vs.Count; i++)
{
if (PointList[i].order == 5)
{
if (PointList[i].refpoints.Count != 3)
{
PointList[i].order = 4;
}
}
else
{
if (PointList[i].refpoints.Count != 4)
{
PointList[i].order = 4;
}
}
}
//////////////////////////////////////////////////////////
for (int k = 0; k < PointList.Count; k++)
{
bool sign = true;
for (int i = 0; i < PointList.Count; i++)
{
if (PointList[i].order == 4)
{
sign = false;
PointList[i].order++;
if (PointList[i].refpoints.Count == 4)
{
if (PointList[i].refpoints[0].order == 5 && PointList[i].refpoints[2].order != 5)
{
PointList[i].refpoints[2].order = 1;
}
if (PointList[i].refpoints[1].order == 5 && PointList[i].refpoints[3].order != 5)
{
PointList[i].refpoints[3].order = 1;
}
if (PointList[i].refpoints[2].order == 5 && PointList[i].refpoints[0].order != 5)
{
PointList[i].refpoints[0].order = 1;
}
if (PointList[i].refpoints[3].order == 5 && PointList[i].refpoints[1].order != 5)
{
PointList[i].refpoints[1].order = 1;
}
}
else
{
for (int j = 0; j < PointList[i].refpoints.Count; j++)
{
PointList[i].refpoints[j].order++;
}
}
}
}
for (int i = 0; i < PointList.Count; i++)
{
if (PointList[i].order > 0 && PointList[i].order < 4)
{
PointList[i].order = 4;
}
}
if (sign)
{
break;
}
}
return(PointList);
}
