+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
+
// File: GeomAlgoAPI_SketchBuilder.cpp
// Created: 02 Jun 2014
// Author: Artem ZHIDKOV
#include <GeomAlgoAPI_SketchBuilder.h>
-
-#include <set>
-
-#include <gp_Dir.hxx>
-#include <gp_Pln.hxx>
+#include <GeomAPI_PlanarEdges.h>
#include <BOPAlgo_Builder.hxx>
-#include <BOPAlgo_Operation.hxx>
-#include <BOPAlgo_PaveFiller.hxx>
-#include <BOPTools.hxx>
#include <BRep_Builder.hxx>
-#include <BRep_Curve3D.hxx>
-#include <BRep_TEdge.hxx>
-#include <BRep_TVertex.hxx>
-#include <BRepAlgoAPI_Cut.hxx>
-#include <BRepBuilderAPI_MakeFace.hxx>
-#include <BRepClass_FaceClassifier.hxx>
-#include <Geom_Curve.hxx>
+#include <BRepTopAdaptor_FClass2d.hxx>
#include <Geom_Plane.hxx>
+#include <Precision.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
+#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
-#include <TopoDS_Face.hxx>
-#include <TopoDS_Vertex.hxx>
-#include <TopoDS_Wire.hxx>
-
-#include <Precision.hxx>
-
-#ifndef DBL_MAX
-#define DBL_MAX 1.7976931348623158e+308
-#endif
-
-
-const double tolerance = Precision::Confusion();
-// This value helps to find direction on the boundaries of curve.
-// It is not significant for lines, but is used for circles to avoid
-// wrong directions of movement (when two edges are tangent on the certain vertex)
-const double shift = acos(1.0 - 2.0 * tolerance);
-
-/// \brief Search first vertex - the vertex with lowest x coordinate, which is used in 2 edges at least
-static const TopoDS_Shape& findStartVertex(
- const BOPCol_IndexedDataMapOfShapeListOfShape& theMapVE,
- const gp_Dir& theDirX, const gp_Dir& theDirY);
-
-/// \brief Search the vertex on the sketch candidate to be the next one in the loop
-static void findNextVertex(
- const TopoDS_Shape& theStartVertex,
- const BOPCol_IndexedDataMapOfShapeListOfShape& theVertexEdgeMap,
- const gp_Dir& theStartDir,
- const gp_Dir& theNormal,
- TopoDS_Shape& theNextVertex,
- TopoDS_Shape& theNextEdge,
- gp_Dir& theNextDir);
-
-/// \brief Create planar face using the edges surrounding it
-static void createFace(const TopoDS_Shape& theStartVertex,
- const std::list<TopoDS_Shape>::iterator& theStartEdge,
- const std::list<TopoDS_Shape>::iterator& theEndOfEdges,
- const gp_Pln& thePlane,
- TopoDS_Face& theResFace);
-
-/// \bief Create planar wire
-static void createWireList(const TopoDS_Shape& theStartVertex,
- const std::list<TopoDS_Shape>::iterator& theStartEdge,
- const std::list<TopoDS_Shape>::iterator& theEndOfEdges,
- const std::set<Handle(TopoDS_TShape)>& theEdgesInLoops,
- std::list<TopoDS_Wire>& theResWires);
-
-/// \brief Calculate outer tengency on the edge in specified vertex
-static gp_Dir getOuterEdgeDirection(const TopoDS_Shape& theEdge,
- const TopoDS_Shape& theVertex);
-
-/// \brief Unnecessary edges will be removed from the map.
-/// Positions of iterator will be updated
-static void removeWasteEdges(
- std::list<TopoDS_Shape>::iterator& theStartVertex,
- std::list<TopoDS_Shape>::iterator& theStartEdge,
- const std::list<TopoDS_Shape>::iterator& theEndOfVertexes,
- const std::list<TopoDS_Shape>::iterator& theEndOfEdges,
- BOPCol_IndexedDataMapOfShapeListOfShape& theMapVE);
+#include <TopTools_ListIteratorOfListOfShape.hxx>
+#include <list>
+#include <cmath>
-
-void GeomAlgoAPI_SketchBuilder::createFaces(
- const boost::shared_ptr<GeomAPI_Pnt>& theOrigin,
- const boost::shared_ptr<GeomAPI_Dir>& theDirX,
- const boost::shared_ptr<GeomAPI_Dir>& theDirY,
- const boost::shared_ptr<GeomAPI_Dir>& theNorm,
- const std::list< boost::shared_ptr<GeomAPI_Shape> >& theFeatures,
- std::list< boost::shared_ptr<GeomAPI_Shape> >& theResultFaces,
- std::list< boost::shared_ptr<GeomAPI_Shape> >& theResultWires)
+static TopoDS_Vertex findStartVertex(const TopoDS_Shape& theShape)
{
- if (theFeatures.empty())
- return ;
-
- // Create the list of edges with shared vertexes
- BOPAlgo_Builder aBuilder;
- BOPAlgo_PaveFiller aPF;
- TopoDS_Shape aFeaturesCompound;
-
- if (theFeatures.size() == 1)
- { // If there is only one feature, BOPAlgo_Builder will decline to work. Need to process it anyway
- aFeaturesCompound = theFeatures.front()->impl<TopoDS_Shape>();
- }
- else
- {
- std::list< boost::shared_ptr<GeomAPI_Shape> >::const_iterator anIt = theFeatures.begin();
- for (; anIt != theFeatures.end(); anIt++)
- {
- boost::shared_ptr<GeomAPI_Shape> aPreview(*anIt);
- aBuilder.AddArgument(aPreview->impl<TopoDS_Edge>());
- }
- aPF.SetArguments(aBuilder.Arguments());
- aPF.Perform();
- int aErr = aPF.ErrorStatus();
- if (aErr) return ;
- aBuilder.PerformWithFiller(aPF);
- aErr = aBuilder.ErrorStatus();
- if (aErr) return ;
- aFeaturesCompound = aBuilder.Shape();
- }
-
- BOPCol_IndexedDataMapOfShapeListOfShape aMapVE; // map between vertexes and edges
- BOPTools::MapShapesAndAncestors(aFeaturesCompound, TopAbs_VERTEX, TopAbs_EDGE, aMapVE);
- if (aMapVE.IsEmpty()) // in case of not-initialized circle
- return;
-
- gp_Dir aDirX = theDirX->impl<gp_Dir>();
- gp_Dir aDirY = theDirY->impl<gp_Dir>();
- gp_Dir aNorm = theNorm->impl<gp_Dir>();
-
- gp_Pln aPlane(theOrigin->impl<gp_Pnt>(), aNorm);
-
- // Set of edges used in loops
- std::set<Handle(TopoDS_TShape)> anEdgesInLoops;
- // Lists for processed vertexes and edges
- std::list<TopoDS_Shape> aProcVertexes;
- std::list<TopoDS_Shape> aProcEdges;
-
- // Search the start vertex
- TopoDS_Shape aStartVertex = findStartVertex(aMapVE, aDirX, aDirY);
- aProcVertexes.push_back(aStartVertex);
-
- TopoDS_Shape aCurVertex = aStartVertex;
- gp_Dir aCurDir = aDirY.Reversed();
- gp_Dir aCurNorm = aNorm.Reversed();
-
- // Go through the edges and find loops
- TopoDS_Shape aNextVertex;
- TopoDS_Shape aBindingEdge;
- gp_Dir aNextDir;
- while (aMapVE.Extent() > 0)
- {
- findNextVertex(aCurVertex, aMapVE, aCurDir, aCurNorm, aNextVertex, aBindingEdge, aNextDir);
- aCurNorm = aNorm;
-
- // Try to find next vertex in the list of already processed
- std::list<TopoDS_Shape>::iterator aVertIter = aProcVertexes.begin();
- std::list<TopoDS_Shape>::iterator anEdgeIter = aProcEdges.begin();
- for ( ; aVertIter != aProcVertexes.end(); aVertIter++)
- {
- if (aVertIter->TShape() == aNextVertex.TShape())
- break;
- if (anEdgeIter != aProcEdges.end())
- anEdgeIter++;
- }
-
- aProcVertexes.push_back(aNextVertex);
- aProcEdges.push_back(aBindingEdge);
-
- // The loop was found
- if (aVertIter != aProcVertexes.end())
- {
- // If the binding edge is a full circle, then the list may be empty before addition. Need to update edge iterator
- if (aProcEdges.size() == 1)
- anEdgeIter = aProcEdges.begin();
-
- if (aVertIter != aProcVertexes.begin())
- {
- // Check the orientation of the loop
- gp_Dir aCN = getOuterEdgeDirection(*anEdgeIter, *aVertIter);
- gp_Dir aCP = getOuterEdgeDirection(aProcEdges.back(), *aVertIter);
- aCN.Reverse();
- aCP.Reverse();
- if (aCN.DotCross(aCP, aNorm) < -tolerance)
- {
- // The found loop has wrong orientation and may contain sub-loops.
- // Need to check it onle again with another initial direction.
- aCurVertex = *aVertIter;
- do {
- aProcVertexes.pop_back();
- aProcEdges.pop_back();
- } while (aCurVertex != aProcVertexes.back());
- aCurDir = getOuterEdgeDirection(aProcEdges.back(), aCurVertex);
- aCurNorm = aNorm.Reversed();
- continue;
- }
- }
-
- // When the orientation is correct or the edges looped through
- // the first element, create new face and remove unnecessary edges.
- TopoDS_Face aPatch;
- createFace(*aVertIter, anEdgeIter, aProcEdges.end(), aPlane, aPatch);
- if (!aPatch.IsNull())
- {
- boost::shared_ptr<GeomAPI_Shape> aFace(new GeomAPI_Shape);
- aFace->setImpl(new TopoDS_Shape(aPatch));
- theResultFaces.push_back(aFace);
- }
- // push the edges used in the loop to the map
- std::list<TopoDS_Shape>::iterator anIter;
- for (anIter = anEdgeIter; anIter != aProcEdges.end(); anIter++)
- anEdgesInLoops.insert(anIter->TShape());
- // remove unnecessary edges
- std::list<TopoDS_Shape>::iterator aCopyVLoop = aVertIter;
- std::list<TopoDS_Shape>::iterator aCopyELoop = anEdgeIter;
- removeWasteEdges(aVertIter, anEdgeIter, aProcVertexes.end(), aProcEdges.end(), aMapVE);
-
- // revert the list of remaining edges
- std::list<TopoDS_Shape> aRemainVertexes;
- for ( ; aVertIter != aProcVertexes.end(); aVertIter++)
- aRemainVertexes.push_front(*aVertIter);
- std::list<TopoDS_Shape> aRemainEdges;
- for ( ; anEdgeIter != aProcEdges.end(); anEdgeIter++)
- aRemainEdges.push_front(*anEdgeIter);
- // remove edges and vertexes used in the loop and add remaining ones
- aProcVertexes.erase(aCopyVLoop, aProcVertexes.end());
- aProcVertexes.insert(aProcVertexes.end(), aRemainVertexes.begin(), aRemainVertexes.end());
- aProcEdges.erase(aCopyELoop, aProcEdges.end());
- aProcEdges.insert(aProcEdges.end(), aRemainEdges.begin(), aRemainEdges.end());
-
- // Recalculate current vertex and current direction
- if (!aProcVertexes.empty())
- {
- aNextVertex = aProcVertexes.back();
- if (!aProcEdges.empty())
- aNextDir = getOuterEdgeDirection(aProcEdges.back(), aNextVertex);
- else aNextDir = aDirY;
- }
+ static const double aTol = Precision::PConfusion();
+
+ TopExp_Explorer anExp(theShape, TopAbs_VERTEX);
+ TopoDS_Vertex aStart = TopoDS::Vertex(anExp.Current());
+ gp_Pnt aStartPnt(BRep_Tool::Pnt(aStart));
+ TopoDS_Vertex aCurrent;
+ gp_Pnt aCurrentPnt;
+
+ for (anExp.Next(); anExp.More(); anExp.Next()) {
+ aCurrent = TopoDS::Vertex(anExp.Current());
+ aCurrentPnt = BRep_Tool::Pnt(aCurrent);
+ if ((aCurrentPnt.X() > aStartPnt.X() + aTol) ||
+ (aCurrentPnt.X() > aStartPnt.X() - aTol && aCurrentPnt.Y() > aStartPnt.Y() + aTol) ||
+ (aCurrentPnt.X() > aStartPnt.X() - aTol && aCurrentPnt.Y() > aStartPnt.Y() - aTol &&
+ aCurrentPnt.Z() > aStartPnt.Z() + aTol)) {
+ aStart = aCurrent;
+ aStartPnt = aCurrentPnt;
}
-
- // if next vertex connected only to alone edge, this is a part of wire (not a closed loop),
- // we need to go back through the list of already checked edges to find a branching vertex
- if (!aMapVE.IsEmpty() && aMapVE.Contains(aNextVertex) &&
- aMapVE.FindFromKey(aNextVertex).Size() == 1)
- {
- std::list<TopoDS_Shape>::reverse_iterator aVRIter = aProcVertexes.rbegin();
- std::list<TopoDS_Shape>::reverse_iterator aERIter = aProcEdges.rbegin();
- for (++aERIter, ++aVRIter; aERIter != aProcEdges.rend(); aERIter++, aVRIter++)
- if (aMapVE.FindFromKey(*aVRIter).Size() > 2)
- break;
- if (aERIter != aProcEdges.rend() || aMapVE.FindFromKey(*aVRIter).Size() == 1)
- { // the branching vertex was found or current list of edges is a wire without branches
- std::list<TopoDS_Shape>::iterator aEIter;
- TopoDS_Shape aCurEdge;
- if (aERIter != aProcEdges.rend())
- {
- aEIter = aERIter.base();
- aCurEdge = *aERIter;
- }
- else
- aEIter = aProcEdges.begin();
- std::list<TopoDS_Wire> aTail;
- createWireList(*aVRIter, aEIter, aProcEdges.end(), anEdgesInLoops, aTail);
- std::list<TopoDS_Wire>::const_iterator aTailIter = aTail.begin();
- for ( ; aTailIter != aTail.end(); aTailIter++)
- if (!aTailIter->IsNull())
- {
- boost::shared_ptr<GeomAPI_Shape> aWire(new GeomAPI_Shape);
- aWire->setImpl(new TopoDS_Shape(*aTailIter));
- theResultWires.push_back(aWire);
- }
- std::list<TopoDS_Shape>::iterator aVIter = aVRIter.base();
- std::list<TopoDS_Shape>::iterator aEItCopy = aEIter;
- removeWasteEdges(--aVIter, aEItCopy, aProcVertexes.end(), aProcEdges.end(), aMapVE);
-
- aProcEdges.erase(aEIter, aProcEdges.end());
- aVIter = aVRIter.base();
- aProcVertexes.erase(aVIter, aProcVertexes.end());
-
- if (!aProcVertexes.empty())
- {
- aNextVertex = aProcVertexes.back();
- if (!aCurEdge.IsNull())
- aNextDir = getOuterEdgeDirection(aCurEdge, aNextVertex);
- }
- }
- else
- { // there is no branching vertex in the list of proceeded,
- // so we should revert the list and go the opposite way
- aProcVertexes.reverse();
- aProcEdges.reverse();
- aNextVertex = aProcVertexes.back();
- aNextDir = getOuterEdgeDirection(aProcEdges.back(), aNextVertex);
- }
- }
-
- // When all edges of current component of connectivity are processed,
- // we should repeat procedure for finding initial vertex in the remaining
- if (!aMapVE.IsEmpty() && !aMapVE.Contains(aNextVertex))
- {
- aProcVertexes.clear();
- aProcEdges.clear();
-
- TopoDS_Shape aStartEdge;
- aStartVertex = findStartVertex(aMapVE, aDirX, aDirY);
- aProcVertexes.push_back(aStartVertex);
- aNextVertex = aStartVertex;
- aNextDir = aDirY.Reversed();
- aCurNorm = aNorm.Reversed();
- }
-
- aCurVertex = aNextVertex;
- aCurDir = aNextDir;
}
-
- if (theResultFaces.size() > 1)
- fixIntersections(theResultFaces);
+ return aStart;
}
-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>();
- TopExp_Explorer aVert2((*anIter2)->impl<TopoDS_Shape>(), TopAbs_VERTEX);
- for ( ; aVert2.More(); aVert2.Next())
- {
- Handle(BRep_TVertex) aV = Handle(BRep_TVertex)::DownCast(aVert2.Current().TShape());
- aClassifier.Perform(aF1, aV->Pnt(), tolerance);
- if (aClassifier.State() != TopAbs_IN)
- 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>();
- TopExp_Explorer aVert1((*anIter1)->impl<TopoDS_Shape>(), TopAbs_VERTEX);
- for ( ; aVert1.More(); aVert1.Next())
- {
- Handle(BRep_TVertex) aV = Handle(BRep_TVertex)::DownCast(aVert1.Current().TShape());
- aClassifier.Perform(aF2, aV->Pnt(), tolerance);
- if (aClassifier.State() != TopAbs_IN)
- break;
- }
- if (!aVert1.More())
- { // first shape should be cut from the second
- BRepAlgoAPI_Cut aCut((*anIter2)->impl<TopoDS_Shape>(),
- (*anIter1)->impl<TopoDS_Shape>());
- (*anIter2)->setImpl(new TopoDS_Shape(aCut.Shape()));
- }
- }
- else
- { // second shape should be cut from the first
- BRepAlgoAPI_Cut aCut((*anIter1)->impl<TopoDS_Shape>(),
- (*anIter2)->impl<TopoDS_Shape>());
- (*anIter1)->setImpl(new TopoDS_Shape(aCut.Shape()));
- }
- }
- }
-}
-
-
-// =================== Auxiliary functions ====================================
-const TopoDS_Shape& findStartVertex(
- const BOPCol_IndexedDataMapOfShapeListOfShape& theMapVE,
- const gp_Dir& theDirX, const gp_Dir& theDirY)
+void GeomAlgoAPI_SketchBuilder::createFaces(
+ const std::shared_ptr<GeomAPI_Pnt>& theOrigin,
+ const std::shared_ptr<GeomAPI_Dir>& theDirX,
+ const std::shared_ptr<GeomAPI_Dir>& theNorm,
+ const std::list<std::shared_ptr<GeomAPI_Shape> >& theFeatures,
+ std::list<std::shared_ptr<GeomAPI_Shape> >& theResultFaces)
{
- 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 Handle(BRep_TVertex)& aVert = (const Handle(BRep_TVertex)&)aV.TShape();
- const gp_Pnt& aVertPnt = aVert->Pnt();
+ if (theFeatures.empty())
+ return;
- 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;
- }
+ BRep_Builder aBuilder;
+ // Planar face, where the sketch was built
+ Handle(Geom_Surface) aPlane(new Geom_Plane(theOrigin->impl<gp_Pnt>(), theNorm->impl<gp_Dir>()));
+ TopoDS_Face aPlnFace;
+ aBuilder.MakeFace(aPlnFace, aPlane, Precision::Confusion());
+
+ // Use General Fuse algorithm to prepare all subfaces, bounded by given list of edges
+ BOPAlgo_Builder aBB;
+ aBB.AddArgument(aPlnFace);
+
+ BOPCol_ListOfShape anEdges;
+ BOPCol_ListIteratorOfListOfShape aShapeIt;
+ std::list<std::shared_ptr<GeomAPI_Shape> >::const_iterator aFeatIt = theFeatures.begin();
+ for (; aFeatIt != theFeatures.end(); aFeatIt++) {
+ std::shared_ptr<GeomAPI_Shape> aShape(*aFeatIt);
+ const TopoDS_Edge& anEdge = aShape->impl<TopoDS_Edge>();
+ if (anEdge.ShapeType() == TopAbs_EDGE)
+ aBB.AddArgument(anEdge);
}
- return theMapVE.FindKey(aStartVertexInd);
-}
-
-void findNextVertex(
- const TopoDS_Shape& theStartVertex,
- const BOPCol_IndexedDataMapOfShapeListOfShape& theVertexEdgeMap,
- const gp_Dir& theStartDir,
- const gp_Dir& theNormal,
- TopoDS_Shape& theNextVertex,
- TopoDS_Shape& theNextEdge,
- gp_Dir& theNextDir)
-{
- const BOPCol_ListOfShape& anEdgesList = theVertexEdgeMap.FindFromKey(theStartVertex);
- BOPCol_ListOfShape::Iterator aEdIter(anEdgesList);
- double aBestEdgeProj = DBL_MAX;
- for ( ; aEdIter.More(); aEdIter.Next())
- {
- gp_Dir aTang = getOuterEdgeDirection(aEdIter.Value(), theStartVertex);
- aTang.Reverse();
+ aBB.Perform();
+ if (aBB.ErrorStatus())
+ return;
- // 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 (fabs(fabs(aProj) - 1) < tolerance)
+ // Collect faces
+ const TopTools_ListOfShape& anAreas = aBB.Modified(aPlnFace);
+ TopTools_ListIteratorOfListOfShape anIt(anAreas);
+ for (; anIt.More(); anIt.Next()) {
+ TopoDS_Face aFace = TopoDS::Face(anIt.Value());
+ // avoid infinite faces
+ BRepTopAdaptor_FClass2d aFClass(aFace, Precision::Confusion());
+ if (aFClass.PerformInfinitePoint() == TopAbs_IN)
continue;
- if (theStartDir.DotCross(aTang, theNormal) < tolerance)
- aProj *= -1.0;
- if (aProj < aBestEdgeProj)
- {
- aBestEdgeProj = aProj;
- theNextEdge = aEdIter.Value();
- TopExp_Explorer aVertExp(theNextEdge, TopAbs_VERTEX);
- for ( ; aVertExp.More(); aVertExp.Next())
- if (aVertExp.Current().TShape() != theStartVertex.TShape())
- {
- theNextVertex = aVertExp.Current();
- theNextDir = getOuterEdgeDirection(aEdIter.Value(), theNextVertex);
- break;
- }
- if (!aVertExp.More())
- { // This edge is a full circle
- TopoDS_Vertex aV1, aV2;
- TopExp::Vertices(*(const TopoDS_Edge*)(&theNextEdge), aV1, aV2);
- if (aV1.Orientation() == theStartVertex.Orientation())
- theNextVertex = aV2;
- else
- theNextVertex = aV1;
- theNextDir = getOuterEdgeDirection(aEdIter.Value(), theNextVertex);
- }
- }
- }
-}
+ // rebuild face
+ TopoDS_Face aNewFace;
+ aBuilder.MakeFace(aNewFace, aPlane, Precision::Confusion());
-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;
+ // iterate on wires
+ TopExp_Explorer aWireExp(aFace, TopAbs_WIRE);
+ for (; aWireExp.More(); aWireExp.Next()) {
+ TopoDS_Wire aWire = TopoDS::Wire(aWireExp.Current());
- TopExp_Explorer aVertExp(theEdge, TopAbs_VERTEX);
- for ( ; aVertExp.More(); aVertExp.Next())
- {
- const TopoDS_Shape& aVertex = aVertExp.Current();
- if (aVertex.TShape() == theSpliceVertex.TShape() &&
- 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.TShape() != theSpliceVertex.TShape())
- {
- aCurVertChanged = aVertex;
- isCurVertChanged = true;
- }
- }
- theSpliceVertex = isCurVertChanged ? aCurVertChanged : aVertExp.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);
- theBuilder.Add(theWire, anEdge);
-}
-
-void createFace(const TopoDS_Shape& theStartVertex,
- const std::list<TopoDS_Shape>::iterator& theStartEdge,
- const std::list<TopoDS_Shape>::iterator& theEndOfEdges,
- const gp_Pln& thePlane,
- TopoDS_Face& theResFace)
-{
- TopoDS_Wire aResWire;
- BRep_Builder aBuilder;
- aBuilder.MakeWire(aResWire);
-
- TopoDS_Shape aCurVertex = theStartVertex;
- std::list<TopoDS_Shape>::const_iterator anEdgeIter = theStartEdge;
- for ( ; anEdgeIter != theEndOfEdges; anEdgeIter++)
- {
- TopoDS_Edge anEdge = *((TopoDS_Edge*)(&(*anEdgeIter)));
- addEdgeToWire(anEdge, aBuilder, aCurVertex, aResWire);
- }
-
- BRepBuilderAPI_MakeFace aFaceBuilder(thePlane, aResWire);
- if (aFaceBuilder.Error() == BRepBuilderAPI_FaceDone)
- theResFace = aFaceBuilder.Face();
-}
-
-void createWireList(const TopoDS_Shape& theStartVertex,
- const std::list<TopoDS_Shape>::iterator& theStartEdge,
- const std::list<TopoDS_Shape>::iterator& theEndOfEdges,
- const std::set<Handle(TopoDS_TShape)>& theEdgesInLoops,
- std::list<TopoDS_Wire>& theResWires)
-{
- BRep_Builder aBuilder;
- bool needNewWire = true;
- TopoDS_Shape aCurVertex = theStartVertex;
+ TopoDS_Wire aNewWire;
+ aBuilder.MakeWire(aNewWire);
+ std::list<TopoDS_Edge> aSkippedEdges;
+ bool aStartFound = false;
- std::list<TopoDS_Shape>::iterator anIter = theStartEdge;
- while (anIter != theEndOfEdges)
- {
- while (anIter != theEndOfEdges && needNewWire &&
- theEdgesInLoops.count(anIter->TShape()) != 0)
- {
- TopExp_Explorer aVertExp(*anIter, TopAbs_VERTEX);
- for ( ; aVertExp.More(); aVertExp.Next())
- if (aVertExp.Current().TShape() != aCurVertex.TShape())
- {
- aCurVertex = aVertExp.Current();
- break;
+ // 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);
}
- 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->TShape()) != 0)
- { // There was found the edge already used in loop.
- // Current wire should be released and new one should started
- needNewWire = true;
- continue;
+ 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);
}
- TopoDS_Edge anEdge = *((TopoDS_Edge*)(&(*anIter)));
- addEdgeToWire(anEdge, aBuilder, aCurVertex, theResWires.back());
- anIter++;
+ // store face
+ aFace = aNewFace;
+ std::shared_ptr<GeomAPI_Shape> aResFace(new GeomAPI_Shape);
+ aResFace->setImpl(new TopoDS_Face(aFace));
+ theResultFaces.push_back(aResFace);
}
}
-
-gp_Dir getOuterEdgeDirection(const TopoDS_Shape& theEdge,
- const TopoDS_Shape& theVertex)
-{
- const Handle(BRep_TVertex)& aVertex = (const Handle(BRep_TVertex)&)theVertex.TShape();
- gp_Pnt aVertexPnt = aVertex->Pnt();
-
- const Handle(BRep_TEdge)& anEdge = (const Handle(BRep_TEdge)&)theEdge.TShape();
-
- // Convert the edge to the curve to calculate the tangency.
- // There should be only one curve in the edge.
- Handle(BRep_Curve3D) aEdCurve =
- Handle(BRep_Curve3D)::DownCast(anEdge->Curves().First());
- double aFirst, aLast;
- aEdCurve->Range(aFirst, aLast);
- Handle(Geom_Curve) aCurve = aEdCurve->Curve3D();
-
- gp_Pnt aPnt;
- gp_Vec aTang;
- aCurve->D1(aFirst + shift, aPnt, aTang);
- aCurve->D0(aFirst, aPnt);
- if (aVertexPnt.IsEqual(aPnt, tolerance))
- return gp_Dir(aTang.Reversed());
-
- aCurve->D1(aLast - shift, aPnt, aTang);
- return gp_Dir(aTang);
-}
-
-void removeWasteEdges(
- std::list<TopoDS_Shape>::iterator& theStartVertex,
- std::list<TopoDS_Shape>::iterator& theStartEdge,
- const std::list<TopoDS_Shape>::iterator& theEndOfVertexes,
- const std::list<TopoDS_Shape>::iterator& theEndOfEdges,
- BOPCol_IndexedDataMapOfShapeListOfShape& theMapVE)
+void GeomAlgoAPI_SketchBuilder::createFaces(const std::shared_ptr<GeomAPI_Pnt>& theOrigin,
+ const std::shared_ptr<GeomAPI_Dir>& theDirX,
+ const std::shared_ptr<GeomAPI_Dir>& theNorm,
+ const std::shared_ptr<GeomAPI_Shape>& theWire,
+ std::list<std::shared_ptr<GeomAPI_Shape> >& theResultFaces)
{
- bool isVertStep = true;
- while (theStartVertex != theEndOfVertexes && theStartEdge != theEndOfEdges)
- {
- BOPCol_ListOfShape& aBunch = theMapVE.ChangeFromKey(*theStartVertex);
- BOPCol_ListOfShape::Iterator anApprEdge(aBunch);
- for ( ; anApprEdge.More(); anApprEdge.Next())
- if (anApprEdge.Value() == *theStartEdge)
- break;
- if (anApprEdge.More())
- aBunch.Remove(anApprEdge);
-
- if (isVertStep)
- theStartVertex++;
- else
- {
- theStartEdge++;
- // check current vertex to be a branching point
- // if so, it will be a new starting point to find a loop
- if (aBunch.Size() > 1)
- break;
+ std::shared_ptr<GeomAPI_PlanarEdges> aWire =
+ std::dynamic_pointer_cast<GeomAPI_PlanarEdges>(theWire);
+ if(aWire) {
+ // Filter wires, return only faces.
+ createFaces(theOrigin, theDirX, theNorm, aWire->getEdges(), theResultFaces);
+ } else { // it may be only one circle
+ std::shared_ptr<GeomAPI_Edge> anEdge = std::dynamic_pointer_cast<GeomAPI_Edge>(theWire);
+ if (anEdge) {
+ std::list<std::shared_ptr<GeomAPI_Shape> > aList;
+ aList.push_back(anEdge);
+ createFaces(theOrigin, theDirX, theNorm, aList, theResultFaces);
}
- isVertStep = !isVertStep;
}
-
- // The map of vertex-edges may be changed
- BOPCol_IndexedDataMapOfShapeListOfShape aMapVECopy;
- BOPCol_IndexedDataMapOfShapeListOfShape::Iterator aMapIter(theMapVE);
- for (int ind = 1; aMapIter.More(); aMapIter.Next(), ind++)
- if (!aMapIter.Value().IsEmpty())
- aMapVECopy.Add(theMapVE.FindKey(ind), aMapIter.Value());
- theMapVE.Clear();
- theMapVE.Exchange(aMapVECopy);
}
-
