//======================================================================= //function : PerformLoops //purpose : //======================================================================= void GEOMAlgo_BuilderFace::PerformLoops() { myErrorStatus=0; // Standard_Boolean bFlag; Standard_Integer aNbEA; TopTools_ListIteratorOfListOfShape aIt; TopTools_MapIteratorOfMapOfOrientedShape aItM; TopTools_IndexedDataMapOfShapeListOfShape aVEMap; TopTools_MapOfOrientedShape aMAdded; TopoDS_Iterator aItW; BRep_Builder aBB; GEOMAlgo_WireEdgeSet aWES; GEOMAlgo_WESCorrector aWESCor; // // 1. Usual Wires myLoops.Clear(); aWES.SetFace(myFace); // aIt.Initialize (myShapes); for (; aIt.More(); aIt.Next()) { const TopoDS_Shape& aE=aIt.Value(); if (!myShapesToAvoid.Contains(aE)) { aWES.AddStartElement(aE); } } // aWESCor.SetWES(aWES); aWESCor.Perform(); // GEOMAlgo_WireEdgeSet& aWESN=aWESCor.NewWES(); const TopTools_ListOfShape& aLW=aWESN.Shapes(); // aIt.Initialize (aLW); for (; aIt.More(); aIt.Next()) { const TopoDS_Shape& aW=aIt.Value(); myLoops.Append(aW); } //modified by NIZNHY-PKV Tue Aug 5 15:09:29 2008f // Post Treatment TopTools_MapOfOrientedShape aMEP; // // a. collect all edges that are in loops aIt.Initialize (myLoops); for (; aIt.More(); aIt.Next()) { const TopoDS_Shape& aW=aIt.Value(); aItW.Initialize(aW); for (; aItW.More(); aItW.Next()) { const TopoDS_Shape& aE=aItW.Value(); aMEP.Add(aE); } } // // b. collect all edges that are to avoid aItM.Initialize(myShapesToAvoid); for (; aItM.More(); aItM.Next()) { const TopoDS_Shape& aE=aItM.Key(); aMEP.Add(aE); } // // c. add all edges that are not processed to myShapesToAvoid aIt.Initialize (myShapes); for (; aIt.More(); aIt.Next()) { const TopoDS_Shape& aE=aIt.Value(); if (!aMEP.Contains(aE)) { myShapesToAvoid.Add(aE); } } //modified by NIZNHY-PKV Tue Aug 5 15:09:35 2008t // // 2. Internal Wires myLoopsInternal.Clear(); // aNbEA=myShapesToAvoid.Extent(); aItM.Initialize(myShapesToAvoid); for (; aItM.More(); aItM.Next()) { const TopoDS_Shape& aEE=aItM.Key(); TopExp::MapShapesAndAncestors(aEE, TopAbs_VERTEX, TopAbs_EDGE, aVEMap); } // bFlag=Standard_True; aItM.Initialize(myShapesToAvoid); for (; aItM.More()&&bFlag; aItM.Next()) { const TopoDS_Shape& aEE=aItM.Key(); if (!aMAdded.Add(aEE)) { continue; } // // make new wire TopoDS_Wire aW; aBB.MakeWire(aW); aBB.Add(aW, aEE); // aItW.Initialize(aW); for (; aItW.More()&&bFlag; aItW.Next()) { const TopoDS_Edge& aE=TopoDS::Edge(aItW.Value()); // TopoDS_Iterator aItE(aE); for (; aItE.More()&&bFlag; aItE.Next()) { const TopoDS_Vertex& aV = TopoDS::Vertex(aItE.Value()); const TopTools_ListOfShape& aLE=aVEMap.FindFromKey(aV); aIt.Initialize(aLE); for (; aIt.More()&&bFlag; aIt.Next()) { const TopoDS_Shape& aEx=aIt.Value(); if (aMAdded.Add(aEx)) { aBB.Add(aW, aEx); if(aMAdded.Extent()==aNbEA) { bFlag=!bFlag; } } }//for (; aIt.More(); aIt.Next()) { }//for (; aItE.More(); aItE.Next()) { }//for (; aItW.More(); aItW.Next()) { myLoopsInternal.Append(aW); }//for (; aItM.More(); aItM.Next()) { }