- // remove internal edges from faces
- TopExp_Explorer anExp(aFace, TopAbs_EDGE);
- for (; anExp.More(); anExp.Next())
- if (anExp.Current().Orientation() == TopAbs_INTERNAL)
- break;
- if (anExp.More()) {
- TopoDS_Face aNewFace;
- aBuilder.MakeFace(aNewFace, aPlane, Precision::Confusion());
- TopoDS_Wire aWire;
- aBuilder.MakeWire(aWire);
- for (anExp.ReInit(); anExp.More(); anExp.Next())
- if (anExp.Current().Orientation() != TopAbs_INTERNAL)
- aBuilder.Add(aWire, anExp.Current());
- aBuilder.Add(aNewFace, aWire);
- aFace = aNewFace;
+ // rebuild face
+ TopoDS_Face aNewFace;
+ aBuilder.MakeFace(aNewFace, aPlane, Precision::Confusion());
+
+ // iterate on wires
+ TopExp_Explorer aWireExp(aFace, TopAbs_WIRE);
+ for (; aWireExp.More(); aWireExp.Next()) {
+ TopoDS_Wire aWire = TopoDS::Wire(aWireExp.Current());
+
+ // to make faces equal on different platforms, we will find
+ // a vertex with greater coordinates and start wire from it
+ TopoDS_Vertex aStartVertex = findStartVertex(aWire);
+
+ TopoDS_Wire aNewWire;
+ aBuilder.MakeWire(aNewWire);
+ std::list<TopoDS_Edge> aSkippedEdges;
+ bool aStartFound = false;
+
+ // remove internal edges from faces and make wire start from found vertex
+ TopExp_Explorer anExp(aWire, TopAbs_EDGE);
+ for (; anExp.More(); anExp.Next()) {
+ if (anExp.Current().Orientation() == TopAbs_INTERNAL)
+ continue;
+ if (!aStartFound) {
+ const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
+ TopoDS_Vertex aV1, aV2;
+ TopExp::Vertices(anEdge, aV1, aV2, Standard_True);
+ if (aV1.IsSame(aStartVertex) == Standard_True)
+ aStartFound = true;
+ else
+ aSkippedEdges.push_back(anEdge);
+ }
+ if (aStartFound)
+ aBuilder.Add(aNewWire, anExp.Current());
+ }
+ // add skipped edges to the end of wire
+ std::list<TopoDS_Edge>::const_iterator aSkIt = aSkippedEdges.begin();
+ for (; aSkIt != aSkippedEdges.end(); ++aSkIt)
+ aBuilder.Add(aNewWire, *aSkIt);
+
+ // check the wire is empty
+ anExp.Init(aNewWire, TopAbs_EDGE);
+ if (anExp.More())
+ aBuilder.Add(aNewFace, aNewWire);