- boost::shared_ptr<GeomAPI_Wire> aWire = boost::dynamic_pointer_cast<GeomAPI_Wire>(theWire);
- if(!aWire)
- return;
- // Filter wires, return only faces.
- std::list<boost::shared_ptr<GeomAPI_Shape> > aFilteredWires;
- createFaces(theOrigin, theDirX, theDirY, theNorm,
- aWire->getEdges(), theResultFaces, aFilteredWires);
-}
-
-
-void GeomAlgoAPI_SketchBuilder::fixIntersections(
- std::list<boost::shared_ptr<GeomAPI_Shape> >& theFaces)
-{
- BRepClass_FaceClassifier aClassifier;
-
- std::list<boost::shared_ptr<GeomAPI_Shape> >::iterator anIter1 = theFaces.begin();
- std::list<boost::shared_ptr<GeomAPI_Shape> >::iterator anIter2;
- for (; anIter1 != theFaces.end(); anIter1++) {
- anIter2 = anIter1;
- for (++anIter2; anIter2 != theFaces.end(); anIter2++) {
- const TopoDS_Face& aF1 = (*anIter1)->impl<TopoDS_Face>();
- assert(aF1.ShapeType() == TopAbs_FACE); // all items in result list should be faces
- TopExp_Explorer aVert2((*anIter2)->impl<TopoDS_Shape>(), TopAbs_VERTEX);
- for (; aVert2.More(); aVert2.Next()) {
- const TopoDS_Vertex& aV = (const TopoDS_Vertex&)aVert2.Current();
- aClassifier.Perform(aF1, BRep_Tool::Pnt(aV), tolerance);
- TopAbs_State aState = aClassifier.State();
- if (aState != TopAbs_IN && aState != TopAbs_ON)
- break;
- }
- if (aVert2.More()) { // second shape is not inside first, change the shapes order and repeat comparision
- const TopoDS_Face& aF2 = (*anIter2)->impl<TopoDS_Face>();
- assert(aF2.ShapeType() == TopAbs_FACE); // all items in result list should be faces
- TopExp_Explorer aVert1((*anIter1)->impl<TopoDS_Shape>(), TopAbs_VERTEX);
- for (; aVert1.More(); aVert1.Next()) {
- const TopoDS_Vertex& aV = (const TopoDS_Vertex&)aVert2.Current();
- aClassifier.Perform(aF2, BRep_Tool::Pnt(aV), tolerance);
- TopAbs_State aState = aClassifier.State();
- if (aState != TopAbs_IN && aState != TopAbs_ON)
- break;
- }
- if (!aVert1.More()) { // first shape should be cut from the second
- BRepAlgoAPI_Cut aCut((*anIter2)->impl<TopoDS_Shape>(), (*anIter1)->impl<TopoDS_Shape>());
- aCut.Build();
- TopExp_Explorer anExp(aCut.Shape(), TopAbs_FACE);
- bool isFirstFace = true;
- for (; anExp.More(); anExp.Next()) {
- if (anExp.Current().ShapeType() != TopAbs_FACE) continue;
- if (isFirstFace) {
- (*anIter2)->setImpl(new TopoDS_Shape(anExp.Current()));
- isFirstFace = false;
- } else {
- boost::shared_ptr<GeomAPI_Shape> aShape(new GeomAPI_Shape);
- aShape->setImpl(new TopoDS_Shape(anExp.Current()));
- theFaces.push_back(aShape);
- }
- }
- }
- } else { // second shape should be cut from the first
- BRepAlgoAPI_Cut aCut((*anIter1)->impl<TopoDS_Shape>(), (*anIter2)->impl<TopoDS_Shape>());
- aCut.Build();
- TopExp_Explorer anExp(aCut.Shape(), TopAbs_FACE);
- bool isFirstFace = true;
- for (; anExp.More(); anExp.Next()) {
- if (anExp.Current().ShapeType() != TopAbs_FACE) continue;
- if (isFirstFace) {
- (*anIter1)->setImpl(new TopoDS_Shape(anExp.Current()));
- isFirstFace = false;
- } else {
- boost::shared_ptr<GeomAPI_Shape> aShape(new GeomAPI_Shape);
- aShape->setImpl(new TopoDS_Shape(anExp.Current()));
- theFaces.push_back(aShape);
- }
- }
- }
- }
- }
-}
-
-// =================== Auxiliary functions ====================================
-const TopoDS_Vertex& findStartVertex(const BOPCol_IndexedDataMapOfShapeListOfShape& theMapVE,
- const gp_Dir& theDirX, const gp_Dir& theDirY)
-{
- int aStartVertexInd = 1;
- double aMaxX = -DBL_MAX;
- double aMaxY = -DBL_MAX;
- int aNbVert = theMapVE.Extent();
- for (int i = 1; i <= aNbVert; i++) {
- const TopoDS_Vertex& aV = (const TopoDS_Vertex&) theMapVE.FindKey(i);
- const gp_Pnt& aVertPnt = BRep_Tool::Pnt(aV);
-
- double aX = aVertPnt.XYZ().Dot(theDirX.XYZ());
- double aY = aVertPnt.XYZ().Dot(theDirY.XYZ());
- if ((aX > aMaxX || (fabs(aX - aMaxX) < tolerance && aY > aMaxY))
- && theMapVE.FindFromIndex(i).Extent() > 1) {
- aMaxX = aX;
- aMaxY = aY;
- aStartVertexInd = i;
- }
- }
- return static_cast<const TopoDS_Vertex&>(theMapVE.FindKey(aStartVertexInd));
-}
-
-void findNextVertex(const TopoDS_Vertex& theStartVertex,
- const BOPCol_IndexedDataMapOfShapeListOfShape& theVertexEdgeMap,
- const gp_Dir& theStartDir, const gp_Dir& theNormal, TopoDS_Vertex& theNextVertex,
- TopoDS_Edge& theNextEdge, gp_Dir& theNextDir)
-{
- theNextVertex = TopoDS_Vertex();
- const BOPCol_ListOfShape& anEdgesList = theVertexEdgeMap.FindFromKey(theStartVertex);
- int anEdgesNum = anEdgesList.Extent();
- BOPCol_ListOfShape::Iterator aEdIter(anEdgesList);
- double aBestEdgeProj = DBL_MAX;
- for (; aEdIter.More(); aEdIter.Next()) {
- const TopoDS_Edge& anEdge = static_cast<const TopoDS_Edge&>(aEdIter.Value());
- gp_Dir aTang = getOuterEdgeDirection(anEdge, theStartVertex);
- aTang.Reverse();
-
- // The projection is normalized in segment (-1, 1),
- // where (-1, 0] corresponds to the angles (pi/2, 0] between theStartDir and aTang
- // and [0, 1) corresponds to the angles [0, -pi/2)
- double aProj = (aTang.Dot(theStartDir) - 1.0) * 0.5;
- if (anEdgesNum > 1 && fabs(fabs(aProj) - 1) < tolerance)
- continue;
- if (theStartDir.DotCross(aTang, theNormal) < tolerance)
- aProj *= -1.0;
-
- if (aProj < aBestEdgeProj) {
- aBestEdgeProj = aProj;
- theNextEdge = anEdge;
- TopExp_Explorer aVertExp(theNextEdge, TopAbs_VERTEX);
- for (; aVertExp.More(); aVertExp.Next())
- if (!aVertExp.Current().IsSame(theStartVertex)) {
- theNextVertex = static_cast<const TopoDS_Vertex&>(aVertExp.Current());
- theNextDir = getOuterEdgeDirection(anEdge, theNextVertex);
- break;
- }
- if (!aVertExp.More()) { // This edge is a full circle
- TopoDS_Vertex aV1, aV2;
- TopExp::Vertices(theNextEdge, aV1, aV2);
- if (aV1.Orientation() == theStartVertex.Orientation())
- theNextVertex = aV2;
- else
- theNextVertex = aV1;
- theNextDir = getOuterEdgeDirection(anEdge, theNextVertex);
- }
- }
- }
-
- // Probably there are two tangent edges. We will take the edge differs from current one
- if (theNextVertex.IsNull() && anEdgesNum == 2) {
- BOPCol_ListOfShape::Iterator aEdIter(anEdgesList);
- if (aEdIter.Value() == theNextEdge)
- aEdIter.Next();
- theNextEdge = static_cast<const TopoDS_Edge&>(aEdIter.Value());
- TopoDS_Vertex aV1, aV2;
- TopExp::Vertices(theNextEdge, aV1, aV2);
- theNextVertex = theStartVertex.IsSame(aV1) ? aV2 : aV1;
- theNextDir = getOuterEdgeDirection(theNextEdge, theNextVertex);
- }
-}
-
-static void addEdgeToWire(const TopoDS_Edge& theEdge, const BRep_Builder& theBuilder,
- TopoDS_Shape& theSpliceVertex, TopoDS_Wire& theWire)
-{
- TopoDS_Edge anEdge = theEdge;
- bool isCurVertChanged = false;
- TopoDS_Shape aCurVertChanged;
-
- TopExp_Explorer aVertExp(theEdge, TopAbs_VERTEX);
- for (; aVertExp.More(); aVertExp.Next()) {
- const TopoDS_Shape& aVertex = aVertExp.Current();
- if (aVertex.IsSame(theSpliceVertex)
- && aVertex.Orientation() != theEdge.Orientation()) { // Current vertex is the last for the edge, so its orientation is wrong, need to revert the edge
- anEdge.Reverse();
- break;
- }
- if (!aVertex.IsSame(theSpliceVertex)) {
- aCurVertChanged = aVertex;
- isCurVertChanged = true;
- }
- }
- theSpliceVertex = isCurVertChanged ? aCurVertChanged : aVertExp.Current();
-
- theBuilder.Add(theWire, anEdge);
-}
-
-void createFace(const TopoDS_Vertex& theStartVertex,
- const std::list<TopoDS_Edge>::iterator& theStartEdge,
- const std::list<TopoDS_Edge>::iterator& theEndOfEdges,
- const gp_Pln& thePlane,
- TopoDS_Face& theResFace)
-{
- TopoDS_Wire aResWire;
- BRep_Builder aBuilder;
- aBuilder.MakeWire(aResWire);
-
- TopoDS_Vertex aCurVertex = theStartVertex;
- std::list<TopoDS_Edge>::const_iterator anEdgeIter = theStartEdge;
- for (; anEdgeIter != theEndOfEdges; anEdgeIter++) {
- if (!anEdgeIter->IsNull())
- addEdgeToWire(*anEdgeIter, aBuilder, aCurVertex, aResWire);
- }
-
- BRepBuilderAPI_MakeFace aFaceBuilder(thePlane, aResWire);
- if (aFaceBuilder.Error() == BRepBuilderAPI_FaceDone)
- theResFace = aFaceBuilder.Face();
-}
-
-void createWireList(const TopoDS_Vertex& theStartVertex,
- const std::list<TopoDS_Edge>::iterator& theStartEdge,
- const std::list<TopoDS_Edge>::iterator& theEndOfEdges,
- const std::set<TopoDS_Edge*>& theEdgesInLoops,
- std::list<TopoDS_Wire>& theResWires)
-{
- BRep_Builder aBuilder;
- bool needNewWire = true;
- TopoDS_Vertex aCurVertex = theStartVertex;
-
- std::list<TopoDS_Edge>::iterator anIter = theStartEdge;
- while (anIter != theEndOfEdges) {
- while (anIter != theEndOfEdges && needNewWire && theEdgesInLoops.count(&(*anIter)) != 0) {
- TopExp_Explorer aVertExp(*anIter, TopAbs_VERTEX);
- for (; aVertExp.More(); aVertExp.Next())
- if (!aVertExp.Current().IsSame(aCurVertex)) {
- aCurVertex = static_cast<const TopoDS_Vertex&>(aVertExp.Current());
- break;
- }
- anIter++;
- }
- if (anIter == theEndOfEdges)
- break;
-
- if (needNewWire) { // The new wire should be created
- TopoDS_Wire aWire;
- aBuilder.MakeWire(aWire);
- theResWires.push_back(aWire);
- needNewWire = false;
- } else if (theEdgesInLoops.count(&(*anIter)) != 0) { // There was found the edge already used in loop.
- // Current wire should be released and new one should started
- needNewWire = true;
- continue;