src/GeomAlgoAPI/GeomAlgoAPI_Sewing.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        GeomAlgoAPI_Sewing.cpp
   4 // Created:     25 April 2016
   5 // Author:      Dmitry Bobylev
   6
   7
   8 #include "GeomAlgoAPI_Sewing.h"
   9
  10 #include <BRep_Builder.hxx>
  11 #include <BRepBuilderAPI_MakeShell.hxx>
  12 #include <BRepBuilderAPI_Sewing.hxx>
  13 #include <TopExp_Explorer.hxx>
  14 #include <TopoDS_Iterator.hxx>
  15 #include <TopoDS_Shape.hxx>
  16
  17 //==================================================================================================
  18 GeomAlgoAPI_Sewing::GeomAlgoAPI_Sewing(const ListOfShape& theShapes)
  19 {
  20   build(theShapes);
  21 }
  22
  23 void GeomAlgoAPI_Sewing::build(const ListOfShape& theShapes)
  24 {
  25   if(theShapes.empty()) {
  26     return;
  27   }
  28
  29   BRepBuilderAPI_Sewing* aSewingBuilder = new BRepBuilderAPI_Sewing();
  30   this->setImpl(aSewingBuilder);
  31
  32   for(ListOfShape::const_iterator anIt = theShapes.cbegin(); anIt != theShapes.cend(); ++anIt) {
  33     const TopoDS_Shape& aShape = (*anIt)->impl<TopoDS_Shape>();
  34     aSewingBuilder->Add(aShape);
  35   }
  36
  37   aSewingBuilder->Perform();
  38
  39   TopoDS_Shape aResult = aSewingBuilder->SewedShape();
  40   BRep_Builder aBuilder;
  41   if(aResult.ShapeType() == TopAbs_COMPOUND) {
  42     TopoDS_Compound aResultCompound;
  43     aBuilder.MakeCompound(aResultCompound);
  44     for(TopoDS_Iterator anIt(aResult); anIt.More(); anIt.Next()) {
  45       const TopoDS_Shape aSubShape = anIt.Value();
  46       if(aSubShape.ShapeType() == TopAbs_SHELL) {
  47         aBuilder.Add(aResultCompound, aSubShape);
  48       } else if (aSubShape.ShapeType() == TopAbs_FACE) {
  49         TopoDS_Shell aShell;
  50         aBuilder.MakeShell(aShell);
  51         aBuilder.Add(aShell, aSubShape);
  52         aBuilder.Add(aResultCompound, aShell);
  53       }
  54     }
  55     aResult = aResultCompound;
  56   } else if(aResult.ShapeType() == TopAbs_FACE) {
  57     TopoDS_Shell aShell;
  58     aBuilder.MakeShell(aShell);
  59     aBuilder.Add(aShell, aResult);
  60     aResult = aShell;
  61   }
  62
  63   std::shared_ptr<GeomAPI_Shape> aShape(new GeomAPI_Shape());
  64   aShape->setImpl(new TopoDS_Shape(aResult));
  65   this->setShape(aShape);
  66   this->setDone(true);
  67 }
  68
  69 //==================================================================================================
  70 void GeomAlgoAPI_Sewing::modified(const std::shared_ptr<GeomAPI_Shape> theShape,
  71                                   ListOfShape& theHistory)
  72 {
  73   static int anIndex = 0;
  74   if(!theShape.get()) {
  75     return;
  76   }
  77
  78   const TopoDS_Shape& aShape = theShape->impl<TopoDS_Shape>();
  79   const BRepBuilderAPI_Sewing& aSewingBuilder = this->impl<BRepBuilderAPI_Sewing>();
  80
  81   TopoDS_Shape aModifiedShape = aSewingBuilder.Modified(aShape);
  82   if(aModifiedShape.IsEqual(aShape)) {
  83     aModifiedShape = aSewingBuilder.ModifiedSubShape(aShape);
  84   }
  85
  86   for(TopExp_Explorer anExp(aModifiedShape, aShape.ShapeType()); anExp.More(); anExp.Next()) {
  87     GeomShapePtr aGeomShape(new GeomAPI_Shape());
  88     aGeomShape->setImpl(new TopoDS_Shape(anExp.Current()));
  89     theHistory.push_back(aGeomShape);
  90   }
  91 }