[ObjectARX]-创建多边形网格createPolygonMesh

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AcGePoint3dArray pts-所有点（sect1.pt1、sect1.pt2、…sect2.pt1，sect2.pt2…sectN.pt1和sectN.pt2…）
int clrInd-创建的AcDbPolygonMesh的颜色索引
int mSize-节中的点
int nSize-截面数量

AcDbPolygonMesh * createPolygonMesh(AcGePoint3dArray pts, int clrInd, int mSize, int nSize)
{
   AcDbObjectId id;
   AcDbPolygonMesh * pMesh = new AcDbPolygonMesh();
   pMesh->setMSize(mSize);
   pMesh->setNSize(nSize);
   pMesh->makeMOpen();
   pMesh->makeNOpen();
   pMesh->setLinetype(_T("Continuous"));
   pMesh->setPolyMeshType(AcDb::kSimpleMesh);
   for (int i = 0; i < pts.length(); i++)
   {
      AcDbPolygonMeshVertex *pVert = new AcDbPolygonMeshVertex(pts.at(i));
      pMesh->appendVertex(pVert);
   }
   pMesh->setColorIndex(clrInd);
   appendToDatabase(pMesh,id); // it's just append entity to db.
   pMesh->draw();
   pMesh->close();
   return pMesh;
}