--- /dev/null
+// Created on: 2012-08-06
+// Created by: jgv@ROLEX
+// Copyright (c) 2012-2014 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+
+#include <BRepOffsetAPI_PatchFaces.hxx>
+#include <BRep_Builder.hxx>
+#include <BRep_Tool.hxx>
+#include <BRepAdaptor_Curve.hxx>
+#include <BRepAdaptor_Surface.hxx>
+#include <BRepAdaptor_HSurface.hxx>
+#include <BRepTopAdaptor_TopolTool.hxx>
+#include <LocalAnalysis_SurfaceContinuity.hxx>
+#include <TopOpeBRepTool_TOOL.hxx>
+#include <BRepLib.hxx>
+#include <BRepLib_MakeVertex.hxx>
+#include <BRepTools_WireExplorer.hxx>
+#include <TopExp.hxx>
+#include <TopExp_Explorer.hxx>
+#include <TopoDS.hxx>
+#include <TopoDS_Iterator.hxx>
+#include <IntTools_Context.hxx>
+#include <BOPTools_AlgoTools.hxx>
+#include <BRepOffset_Tool.hxx>
+#include <ShapeAnalysis_Surface.hxx>
+#include <ShapeConstruct_ProjectCurveOnSurface.hxx>
+#include <BRepAlgoAPI_Section.hxx>
+#include <Extrema_ExtPC.hxx>
+#include <BRepExtrema_ExtCC.hxx>
+#include <ShapeFix_Shape.hxx>
+
+static void UpdateEdgeByProjectionOfPCurve(TopoDS_Edge& anEdge,
+ const TopoDS_Face& aNewFace,
+ const TopoDS_Face& aBoundedNewFace)
+{
+ BRep_Builder BB;
+ Standard_Real fpar, lpar;
+
+ Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge,fpar,lpar);
+
+ Handle(Geom_Surface) NewSurf = BRep_Tool::Surface(aNewFace);
+ Handle(ShapeAnalysis_Surface) SAS = new ShapeAnalysis_Surface(NewSurf);
+ ShapeConstruct_ProjectCurveOnSurface aToolProj;
+ aToolProj.Init(SAS, Precision::Confusion());
+ Handle(Geom2d_Curve) NewPCurve;
+ aToolProj.Perform(aCurve,fpar,lpar,NewPCurve);
+ Standard_Real TolReached = SAS->Gap();
+ //BB.UpdateEdge(anEdge, NullPCurve, aFace, 0.);
+ BB.UpdateEdge(anEdge, NewPCurve, aBoundedNewFace, TolReached);
+ TopoDS_Vertex V1, V2;
+ TopExp::Vertices(anEdge, V1, V2);
+ BB.UpdateVertex(V1, TolReached);
+ BB.UpdateVertex(V2, TolReached);
+}
+
+static void ProjectVertexOnNewEdge(const TopoDS_Vertex& theVertex,
+ const TopoDS_Edge& theEdge,
+ const TopoDS_Edge& theNewEdge,
+ Standard_Real& theParam,
+ gp_Pnt& thePnt)
+{
+ Standard_Real ParamOnEdge = BRep_Tool::Parameter(theVertex, theEdge);
+ BRepAdaptor_Curve BAcurve(theEdge);
+ BRepAdaptor_Curve BAnewcurve(theNewEdge);
+ gp_Pnt PointOnEdge = BAcurve.Value(ParamOnEdge);
+ Extrema_ExtPC Projector(PointOnEdge, BAnewcurve);
+ Standard_Real Param[4], dist[4];
+ gp_Pnt Pnt[4];
+ Param[1] = BAnewcurve.FirstParameter();
+ Param[2] = BAnewcurve.LastParameter();
+ Projector.TrimmedSquareDistances(dist[1], dist[2], Pnt[1], Pnt[2]);
+ dist[3] = RealLast();
+ if (Projector.IsDone() && Projector.NbExt() > 0)
+ {
+ Standard_Integer imin = 1;
+ for (Standard_Integer i = 2; i <= Projector.NbExt(); i++)
+ if (Projector.SquareDistance(i) < Projector.SquareDistance(imin))
+ imin = i;
+ Param[3] = Projector.Point(imin).Parameter();
+ dist[3] = Projector.SquareDistance(imin);
+ Pnt[3] = Projector.Point(imin).Value();
+ }
+
+ Standard_Integer imin = 1;
+ for (Standard_Integer i = 2; i <= 3; i++)
+ if (dist[i] < dist[imin])
+ imin = i;
+
+ theParam = Param[imin];
+ thePnt = Pnt[imin];
+}
+
+static TopoDS_Edge GetGeneratedEdge(const TopoDS_Edge& anEdge,
+ const TopoDS_Face& aFace,
+ const TopoDS_Face& aNewFace)
+{
+ TopoDS_Edge NewEdge;
+
+ TopExp_Explorer Explo(aFace, TopAbs_EDGE);
+ TopExp_Explorer ExploNew(aNewFace, TopAbs_EDGE);
+ for (; Explo.More(); Explo.Next(),ExploNew.Next())
+ {
+ const TopoDS_Shape& EdgeInFace = Explo.Current();
+ //const TopoDS_Shape& EdgeInNewFace = ExploNew.Current();
+ if (anEdge == EdgeInFace)
+ {
+ NewEdge = TopoDS::Edge(ExploNew.Current());
+ break;
+ }
+ }
+ return NewEdge;
+}
+
+static TopAbs_Orientation OrientationInEdge(const TopoDS_Vertex& theVertex,
+ const TopoDS_Edge& theEdge)
+{
+ TopoDS_Vertex V1, V2;
+ TopExp::Vertices(theEdge, V1, V2);
+ if (theVertex.IsSame(V1))
+ return TopAbs_FORWARD;
+
+ return TopAbs_REVERSED;
+}
+
+static Standard_Boolean EdgeContains(const TopoDS_Edge& theEdge,
+ const TopoDS_Vertex& theVertex)
+{
+ TopoDS_Iterator ite(theEdge);
+ for (; ite.More(); ite.Next())
+ if (theVertex.IsSame(ite.Value()))
+ return Standard_True;
+
+ return Standard_False;
+}
+
+
+static Standard_Boolean IsTangentFaces(const TopoDS_Edge& theEdge,
+ const TopoDS_Face& theFace1,
+ const TopoDS_Face& theFace2,
+ const GeomAbs_Shape Order)
+{
+ if (Order == GeomAbs_G1 &&
+ BRep_Tool::Continuity( theEdge, theFace1, theFace2 ) != GeomAbs_C0)
+ return Standard_True;
+
+ Standard_Real TolC0 = Max(0.001, 1.5*BRep_Tool::Tolerance(theEdge));
+
+ Standard_Real aFirst;
+ Standard_Real aLast;
+
+// Obtaining of pcurves of edge on two faces.
+ const Handle(Geom2d_Curve) aC2d1 = BRep_Tool::CurveOnSurface
+ (theEdge, theFace1, aFirst, aLast);
+ const Handle(Geom2d_Curve) aC2d2 = BRep_Tool::CurveOnSurface
+ (theEdge, theFace2, aFirst, aLast);
+ if (aC2d1.IsNull() || aC2d2.IsNull())
+ return Standard_False;
+
+// Obtaining of two surfaces from adjacent faces.
+ Handle(Geom_Surface) aSurf1 = BRep_Tool::Surface(theFace1);
+ Handle(Geom_Surface) aSurf2 = BRep_Tool::Surface(theFace2);
+
+ if (aSurf1.IsNull() || aSurf2.IsNull())
+ return Standard_False;
+
+// Computation of the number of samples on the edge.
+ BRepAdaptor_Surface aBAS1(theFace1);
+ BRepAdaptor_Surface aBAS2(theFace2);
+ Handle(BRepAdaptor_HSurface) aBAHS1 = new BRepAdaptor_HSurface(aBAS1);
+ Handle(BRepAdaptor_HSurface) aBAHS2 = new BRepAdaptor_HSurface(aBAS2);
+ Handle(BRepTopAdaptor_TopolTool) aTool1 = new BRepTopAdaptor_TopolTool(aBAHS1);
+ Handle(BRepTopAdaptor_TopolTool) aTool2 = new BRepTopAdaptor_TopolTool(aBAHS2);
+ Standard_Integer aNbSamples1 = aTool1->NbSamples();
+ Standard_Integer aNbSamples2 = aTool2->NbSamples();
+ Standard_Integer aNbSamples = Max(aNbSamples1, aNbSamples2);
+
+
+// Computation of the continuity.
+ Standard_Real aPar;
+ Standard_Real aDelta = (aLast - aFirst)/(aNbSamples - 1);
+ Standard_Integer i, nbNotDone = 0;
+
+ for (i = 1, aPar = aFirst; i <= aNbSamples; i++, aPar += aDelta) {
+ if (i == aNbSamples) aPar = aLast;
+
+ LocalAnalysis_SurfaceContinuity aCont(aC2d1, aC2d2, aPar,
+ aSurf1, aSurf2, Order,
+ 0.001, TolC0, 0.1, 0.1, 0.1);
+ if (!aCont.IsDone())
+ {
+ nbNotDone++;
+ continue;
+ }
+
+ if (Order == GeomAbs_G1)
+ {
+ if (!aCont.IsG1())
+ return Standard_False;
+ }
+ else if (!aCont.IsG2())
+ return Standard_False;
+ }
+
+ if (nbNotDone == aNbSamples)
+ return Standard_False;
+
+ return Standard_True;
+}
+
+//=======================================================================
+//function : BRepOffsetAPI_PatchFaces
+//purpose : Constructor
+//=======================================================================
+
+BRepOffsetAPI_PatchFaces::BRepOffsetAPI_PatchFaces(const TopoDS_Shape& theShape)
+{
+ myInitialShape = theShape;
+}
+
+//=======================================================================
+//function : SetOffsetFace
+//purpose :
+//=======================================================================
+void BRepOffsetAPI_PatchFaces::AddPatchFace(const TopoDS_Face& theFace,
+ const TopoDS_Face& thePatchFace)
+{
+ // Check the orientation of the patch face and make
+ // it oriented the same way as original
+ TopoDS_Face aFace = TopoDS::Face(theFace.Oriented(TopAbs_FORWARD));
+ TopoDS_Face aPatchFace = TopoDS::Face(thePatchFace.Oriented(TopAbs_FORWARD));
+
+ Handle(IntTools_Context) aCtx = new IntTools_Context;
+ Standard_Boolean bToReverse = BOPTools_AlgoTools::IsSplitToReverse(aFace, aPatchFace, aCtx);
+ TopoDS_Face anOrientedPatchFace = bToReverse ? TopoDS::Face(aPatchFace.Reversed()) : aPatchFace;
+ myFacePatchFace.Add(aFace, anOrientedPatchFace);
+}
+
+//=======================================================================
+//function : Build
+//purpose :
+//=======================================================================
+
+void BRepOffsetAPI_PatchFaces::Build()
+{
+ TopExp::MapShapesAndUniqueAncestors(myInitialShape, TopAbs_EDGE, TopAbs_FACE, myEFmap);
+
+ //Draft filling of <myFaceNewFace>
+ for (Standard_Integer i = 1; i <= myFacePatchFace.Extent(); i++)
+ {
+ const TopoDS_Face& aFace = TopoDS::Face(myFacePatchFace.FindKey(i));
+ const TopoDS_Shape& aPatchFace = myFacePatchFace(i);
+ myFaceNewFace.Add(aFace, aPatchFace);
+ TopExp_Explorer Explo(aFace, TopAbs_EDGE);
+ for (; Explo.More(); Explo.Next())
+ {
+ const TopoDS_Edge& anEdge = TopoDS::Edge(Explo.Current());
+ const TopTools_ListOfShape& Lfaces = myEFmap.FindFromKey(anEdge);
+ TopoDS_Face aNeighborFace = (aFace.IsSame(Lfaces.First()))?
+ TopoDS::Face(Lfaces.Last()) : TopoDS::Face(Lfaces.First());
+ if (myFacePatchFace.Contains(aNeighborFace))
+ continue;
+ if (myFaceNewFace.Contains(aNeighborFace))
+ continue;
+ Standard_Boolean IsTangentEdge = IsTangentFaces(anEdge, aFace, aNeighborFace, GeomAbs_G1);
+ if (IsTangentEdge)
+ {
+ myTangentEdges.Add(anEdge);
+ continue;
+ }
+
+ aNeighborFace.Orientation(TopAbs_FORWARD);
+ TopoDS_Face aNewFace;
+ BRepOffset_Tool::EnLargeFace(aNeighborFace, aNewFace,
+ Standard_True,Standard_True,Standard_True,Standard_True,Standard_True);
+ myFaceNewFace.Add(aNeighborFace, aNewFace);
+ }
+ }
+
+ //Make draft intersection edges: draft filling of <myEdgeNewEdge>
+ BRep_Builder BB;
+ TopTools_MapOfShape UpdatedConstEdges;
+ for (Standard_Integer i = 1; i <= myFaceNewFace.Extent(); i++)
+ {
+ TopoDS_Face aFace = TopoDS::Face(myFaceNewFace.FindKey(i));
+ TopoDS_Face aNewFace = TopoDS::Face(myFaceNewFace(i));
+ TopoDS_Face aBoundedNewFace;
+ if (myNewFaceBoundedFace.IsBound(aNewFace))
+ aBoundedNewFace = TopoDS::Face(myNewFaceBoundedFace(aNewFace));
+ else
+ {
+ aBoundedNewFace = TopoDS::Face(aNewFace.EmptyCopied());
+ myNewFaceBoundedFace.Bind(aNewFace, aBoundedNewFace);
+ }
+
+ TopoDS_Iterator itf(aFace);
+ for (; itf.More(); itf.Next())
+ {
+ const TopoDS_Wire& aWire = TopoDS::Wire(itf.Value());
+ TopoDS_Wire F_Wire = TopoDS::Wire(aWire.Oriented(TopAbs_FORWARD));
+ BRepTools_WireExplorer wexp(F_Wire, aFace);
+ for (; wexp.More(); wexp.Next())
+ {
+ TopoDS_Edge anEdge = wexp.Current();
+ Standard_Boolean ToReverse = Standard_False;
+ TopoDS_Edge aNewEdge;
+ if (myEdgeNewEdge.IsBound(anEdge))
+ //aNewEdge = TopoDS::Edge(myEdgeNewEdge(anEdge));
+ continue;
+
+ Handle(Geom2d_Curve) NullPCurve;
+ Standard_Real fpar, lpar;
+
+ const TopTools_ListOfShape& Lfaces = myEFmap.FindFromKey(anEdge);
+ if (Lfaces.Extent() == 1) //seam edge
+ {
+ cout<<endl<<"Seam edge or degenerated edge !!!"<<endl;
+ TopoDS_Edge GeneratedEdge = GetGeneratedEdge(anEdge, aFace, aNewFace);
+ myOrientedEdgeNewEdge.Bind(anEdge, GeneratedEdge);
+ continue;
+ }
+
+ TopoDS_Face aNeighborFace = (aFace.IsSame(Lfaces.First()))?
+ TopoDS::Face(Lfaces.Last()) : TopoDS::Face(Lfaces.First());
+
+ if (myTangentEdges.Contains(anEdge)&&
+ !UpdatedConstEdges.Contains(anEdge)) //project onto patch
+ {
+ UpdateEdgeByProjectionOfPCurve(anEdge, aNewFace, aBoundedNewFace);
+
+ //aNewEdge = anEdge;
+ UpdatedConstEdges.Add(anEdge);
+ continue;
+ }
+
+ if (mySmoothEdges.Contains(anEdge))
+ continue;
+
+ if (myFaceNewFace.Contains(aNeighborFace))//intersect
+ {
+ TopoDS_Face aNewNeighborFace = TopoDS::Face(myFaceNewFace.FindFromKey(aNeighborFace));
+ TopoDS_Face aBoundedNewNeighborFace;
+ if (myNewFaceBoundedFace.IsBound(aNewNeighborFace))
+ aBoundedNewNeighborFace = TopoDS::Face(myNewFaceBoundedFace(aNewNeighborFace));
+ else
+ {
+ aBoundedNewNeighborFace = TopoDS::Face(aNewNeighborFace.EmptyCopied());
+ myNewFaceBoundedFace.Bind(aNewNeighborFace, aBoundedNewNeighborFace);
+ }
+
+ if (!myFacePatchFace.Contains(aFace) &&
+ !myFacePatchFace.Contains(aNeighborFace) &&
+ IsTangentFaces(anEdge, aFace, aNeighborFace, GeomAbs_G1)) //smooth edge: change surfaces of pcurves
+ {
+ Handle(Geom2d_Curve) aPCurve1 = BRep_Tool::CurveOnSurface(anEdge, aFace, fpar, lpar);
+ //BB.UpdateEdge(anEdge, NullPCurve, aFace, 0.);
+ BB.UpdateEdge(anEdge, aPCurve1, aBoundedNewFace, 0.);
+ Handle(Geom2d_Curve) aPCurve2 = BRep_Tool::CurveOnSurface(anEdge, aNeighborFace, fpar, lpar);
+ //BB.UpdateEdge(anEdge, NullPCurve, aNeighborFace, 0.);
+ BB.UpdateEdge(anEdge, aPCurve2, aBoundedNewNeighborFace, 0.);
+
+ //aNewEdge = anEdge;
+ mySmoothEdges.Add(anEdge);
+ continue;
+ }
+
+ BRepLib::BuildCurves3d(aNewFace);
+ BRepLib::BuildCurves3d(aNewNeighborFace);
+
+ BRepAlgoAPI_Section SecBuilder(aNewFace, aNewNeighborFace, Standard_False);
+ SecBuilder.Approximation(Standard_True);
+ SecBuilder.ComputePCurveOn1(Standard_True);
+ SecBuilder.ComputePCurveOn2(Standard_True);
+ SecBuilder.Build();
+ TopoDS_Shape aSection = SecBuilder.Shape();
+ Standard_Boolean Success = Standard_True;
+ TopExp_Explorer ExpSec(aSection, TopAbs_EDGE);
+ if (ExpSec.More())
+ aNewEdge = TopoDS::Edge(ExpSec.Current());
+ else //no intersection
+ {
+ cout<<endl<<"No intersecion => smooth edge"<<endl;
+ Success = Standard_False;
+ }
+ ExpSec.Next();
+ if (ExpSec.More())
+ {
+ cout<<endl<<"More than one intersecion => smooth edge"<<endl;
+ Success = Standard_False;
+ }
+ if (!Success) //a smooth edge with bigger angle
+ {
+ if (myFacePatchFace.Contains(aFace)) //project onto patch
+ {
+ UpdateEdgeByProjectionOfPCurve(anEdge, aNewFace, aBoundedNewFace);
+
+ //??? Remove neighbor face from <myFaceNewFace> ?
+ //myFaceNewFace.RemoveKey(aNeighborFace);
+
+ myTangentEdges.Add(anEdge);
+ UpdatedConstEdges.Add(anEdge);
+ }
+ else
+ {
+ Handle(Geom2d_Curve) aPCurve1 = BRep_Tool::CurveOnSurface(anEdge, aFace, fpar, lpar);
+ //BB.UpdateEdge(anEdge, NullPCurve, aFace, 0.);
+ BB.UpdateEdge(anEdge, aPCurve1, aBoundedNewFace, 0.);
+ Handle(Geom2d_Curve) aPCurve2 = BRep_Tool::CurveOnSurface(anEdge, aNeighborFace, fpar, lpar);
+ //BB.UpdateEdge(anEdge, NullPCurve, aNeighborFace, 0.);
+ BB.UpdateEdge(anEdge, aPCurve2, aBoundedNewNeighborFace, 0.);
+
+ //aNewEdge = anEdge;
+ mySmoothEdges.Add(anEdge);
+ }
+ continue;
+ }
+ TopoDS_Vertex V1, V2;
+ TopExp::Vertices(aNewEdge, V1, V2);
+ aNewEdge.Free(Standard_True);
+ BB.Remove(aNewEdge, V1);
+ if (!V2.IsSame(V1))
+ BB.Remove(aNewEdge, V2);
+ aNewEdge.Orientation(TopAbs_FORWARD);
+
+ //Make pcurves on new surfaces
+ Handle(Geom2d_Curve) PCurve1 = BRep_Tool::CurveOnSurface(aNewEdge, aNewFace, fpar, lpar);
+ BB.UpdateEdge(aNewEdge, NullPCurve, aNewFace, 0.);
+ BB.UpdateEdge(aNewEdge, PCurve1, aBoundedNewFace, 0.);
+ Handle(Geom2d_Curve) PCurve2 = BRep_Tool::CurveOnSurface(aNewEdge, aNewNeighborFace, fpar, lpar);
+ BB.UpdateEdge(aNewEdge, NullPCurve, aNewNeighborFace, 0.);
+ BB.UpdateEdge(aNewEdge, PCurve2, aBoundedNewNeighborFace, 0.);
+
+ //Check orientation of new edge
+ BRepAdaptor_Curve BAcurve(anEdge);
+ BRepAdaptor_Curve BAnewcurve(aNewEdge);
+ gp_Pnt FirstPnt, FirstNewPnt;
+ gp_Vec DirOnCurve, DirOnNewCurve;
+ BAcurve.D1(BAcurve.FirstParameter(), FirstPnt, DirOnCurve);
+ Standard_Real ParamOnNewEdge = BAnewcurve.FirstParameter();
+ Extrema_ExtPC Projector(FirstPnt, BAnewcurve);
+ if (!Projector.IsDone() || Projector.NbExt() == 0)
+ {
+ cout<<endl<<"Define orientation of new edge: extrema point-curve is not done"<<endl;
+ }
+ if (Projector.IsDone() && Projector.NbExt() > 0)
+ {
+ Standard_Integer indmin = 1;
+ for (Standard_Integer ind = 2; ind <= Projector.NbExt(); ind++)
+ if (Projector.SquareDistance(ind) < Projector.SquareDistance(indmin))
+ indmin = ind;
+ ParamOnNewEdge = Projector.Point(indmin).Parameter();
+ }
+ BAnewcurve.D1(ParamOnNewEdge, FirstNewPnt, DirOnNewCurve);
+ Standard_Real ScalProd = DirOnCurve * DirOnNewCurve;
+ if (ScalProd < 0.)
+ ToReverse = Standard_True;
+
+ myEdgeNewEdge.Bind(anEdge.Oriented(TopAbs_FORWARD),
+ (ToReverse)? aNewEdge.Oriented(TopAbs_REVERSED) : aNewEdge);
+ } //intersect
+ else //borders on constant face: change surface of pcurve on existing edge
+ {
+ Handle(Geom2d_Curve) aPCurve = BRep_Tool::CurveOnSurface(anEdge, aFace, fpar, lpar);
+ //BB.UpdateEdge(anEdge, NullPCurve, aFace, 0.);
+ BB.UpdateEdge(anEdge, aPCurve, aBoundedNewFace, 0.);
+
+ aNewEdge = anEdge;
+ }
+ } //for (; wexp.More(); wexp.Next())
+ } //for (; itf.More(); itf.Next())
+ } //for (Standard_Integer i = 1; i <= myFaceNewFace.Extent(); i++)
+
+ //Intersect edges and make new wires
+ for (Standard_Integer i = 1; i <= myFaceNewFace.Extent(); i++)
+ {
+ TopoDS_Face aFace = TopoDS::Face(myFaceNewFace.FindKey(i));
+ TopoDS_Shape aNewFace = myFaceNewFace(i);
+ TopoDS_Face aBoundedNewFace = TopoDS::Face(myNewFaceBoundedFace(aNewFace));
+
+ TopoDS_Iterator itf(aFace);
+ for (; itf.More(); itf.Next())
+ {
+ const TopoDS_Wire& aWire = TopoDS::Wire(itf.Value());
+ TopAbs_Orientation aWireOr = aWire.Orientation();
+
+ TopoDS_Wire aNewWire;
+ BB.MakeWire(aNewWire);
+
+ TopoDS_Wire F_Wire = TopoDS::Wire(aWire.Oriented(TopAbs_FORWARD));
+ BRepTools_WireExplorer wexp(F_Wire, aFace);
+ TopoDS_Vertex CurVertex = wexp.CurrentVertex();
+ TopoDS_Edge FirstEdge = wexp.Current();
+ TopoDS_Edge FirstNewEdge = FirstEdge;
+ if (myOrientedEdgeNewEdge.IsBound(FirstEdge))
+ FirstNewEdge = TopoDS::Edge(myOrientedEdgeNewEdge(FirstEdge));
+ else if (myEdgeNewEdge.IsBound(FirstEdge))
+ FirstNewEdge = TopoDS::Edge(myEdgeNewEdge(FirstEdge));
+ TopoDS_Edge CurEdge, PrevEdge = FirstEdge;
+ TopoDS_Edge CurNewEdge, PrevNewEdge = FirstNewEdge;
+ wexp.Next();
+ if (!wexp.More() && //only one edge in wire
+ !myVertexNewVertex.IsBound(CurVertex))
+ {
+ TopoDS_Vertex CurNewVertex;
+ if (myVertexNewVertex.IsBound(CurVertex))
+ CurNewVertex = TopoDS::Vertex(myVertexNewVertex(CurVertex));
+
+ if (myEdgeNewEdge.IsBound(FirstEdge))//new edge: update
+ {
+ Standard_Real fpar, lpar;
+ BRep_Tool::Range(FirstEdge, fpar, lpar);
+ BB.Range(FirstNewEdge, fpar, lpar);
+ BRepAdaptor_Curve BAcurve(FirstNewEdge);
+ gp_Pnt FirstPnt = BAcurve.Value(BAcurve.FirstParameter());
+ if (CurNewVertex.IsNull())
+ CurNewVertex = BRepLib_MakeVertex(FirstPnt);
+ BB.Add(FirstNewEdge, CurNewVertex);
+ BB.Add(FirstNewEdge, CurNewVertex.Oriented(TopAbs_REVERSED));
+ myVertexNewVertex.Bind(CurVertex, CurNewVertex);
+ }
+ }
+ for (; wexp.More(); wexp.Next())
+ {
+ CurEdge = wexp.Current();
+ if (myOrientedEdgeNewEdge.IsBound(CurEdge))
+ CurNewEdge = TopoDS::Edge(myOrientedEdgeNewEdge(CurEdge));
+ else if (myEdgeNewEdge.IsBound(CurEdge))
+ CurNewEdge = TopoDS::Edge(myEdgeNewEdge(CurEdge));
+ else
+ CurNewEdge = CurEdge;
+ CurVertex = wexp.CurrentVertex();
+ UpdateEdgesAndVertex(PrevEdge, PrevNewEdge,
+ CurEdge, CurNewEdge,
+ CurVertex);
+ if (!PrevEdge.IsSame(PrevNewEdge) &&
+ PrevEdge.Orientation() == TopAbs_REVERSED)
+ PrevNewEdge.Reverse();
+ BB.Add(aNewWire, PrevNewEdge);
+
+ PrevEdge = CurEdge;
+ PrevNewEdge = CurNewEdge;
+ }
+ CurEdge = FirstEdge;
+ CurNewEdge = FirstNewEdge;
+ CurVertex = wexp.CurrentVertex();
+ UpdateEdgesAndVertex(PrevEdge, PrevNewEdge,
+ CurEdge, CurNewEdge,
+ CurVertex);
+ if (!PrevEdge.IsSame(PrevNewEdge) &&
+ PrevEdge.Orientation() == TopAbs_REVERSED)
+ PrevNewEdge.Reverse();
+ BB.Add(aNewWire, PrevNewEdge);
+
+ aNewWire.Orientation(aWireOr);
+ BB.Add(aBoundedNewFace, aNewWire);
+ } //for (; itf.More(); itf.Next()) (iterator on face)
+ }
+
+ //Assemble resulting shape
+ TopoDS_Solid aSolid;
+ BB.MakeSolid(aSolid);
+ TopoDS_Shell aShell;
+ BB.MakeShell(aShell);
+ TopExp_Explorer Explo(myInitialShape, TopAbs_FACE);
+ for (; Explo.More(); Explo.Next())
+ {
+ const TopoDS_Shape& aFace = Explo.Current();
+ TopoDS_Shape aBoundedNewFace;
+ if (myFaceNewFace.Contains(aFace))
+ {
+ const TopoDS_Shape& aNewFace = myFaceNewFace.FindFromKey(aFace);
+ aBoundedNewFace = myNewFaceBoundedFace(aNewFace);
+ if (aFace.Orientation() == TopAbs_REVERSED)
+ aBoundedNewFace.Reverse();
+ }
+ else
+ aBoundedNewFace = aFace;
+ BB.Add(aShell, aBoundedNewFace);
+ }
+ BB.Add(aSolid, aShell);
+
+ ShapeFix_Shape Fixer(aSolid);
+ Fixer.Perform();
+
+ myShape = Fixer.Shape();
+ //myShape = aSolid;
+
+ Done();
+}
+
+void BRepOffsetAPI_PatchFaces::UpdateEdgesAndVertex(const TopoDS_Edge& thePrevEdge,
+ TopoDS_Edge& thePrevNewEdge,
+ const TopoDS_Edge& theCurEdge,
+ TopoDS_Edge& theCurNewEdge,
+ TopoDS_Vertex& theCurVertex)
+{
+ BRep_Builder BB;
+
+ TopoDS_Vertex CurNewVertex;
+ if (myVertexNewVertex.IsBound(theCurVertex))
+ CurNewVertex = TopoDS::Vertex(myVertexNewVertex(theCurVertex));
+ else
+ {
+ Standard_Boolean IsConstVertex = (!(myEdgeNewEdge.IsBound(thePrevEdge) || myOrientedEdgeNewEdge.IsBound(thePrevEdge)) ||
+ !(myEdgeNewEdge.IsBound(theCurEdge) || myOrientedEdgeNewEdge.IsBound(theCurEdge)));
+ if (IsConstVertex)
+ CurNewVertex = theCurVertex;
+ }
+
+ if ((myEdgeNewEdge.IsBound(thePrevEdge) || myOrientedEdgeNewEdge.IsBound(thePrevEdge)) &&
+ (myEdgeNewEdge.IsBound(theCurEdge) || myOrientedEdgeNewEdge.IsBound(theCurEdge))) //two new edges: intersect
+ {
+ Standard_Real ParamOnPrev, ParamOnCur;
+ gp_Pnt PntOnPrev, PntOnCur;
+ ProjectVertexOnNewEdge(theCurVertex, thePrevEdge, thePrevNewEdge,
+ ParamOnPrev, PntOnPrev);
+ ProjectVertexOnNewEdge(theCurVertex, theCurEdge, theCurNewEdge,
+ ParamOnCur, PntOnCur);
+
+ Standard_Real TolReached;
+ gp_Pnt PntVtx = BRep_Tool::Pnt(theCurVertex);
+ TolReached = PntOnPrev.Distance(PntOnCur);
+ Standard_Real DistVtoPrev = PntVtx.Distance(PntOnPrev);
+ Standard_Real DistVtoCur = PntVtx.Distance(PntOnCur);
+ TolReached = Max(TolReached, DistVtoPrev);
+ TolReached = Max(TolReached, DistVtoCur);
+
+ BRepExtrema_ExtCC ExtrEE(thePrevNewEdge, theCurNewEdge);
+ if (!ExtrEE.IsDone() || ExtrEE.NbExt() == 0)
+ {
+ cout<<endl<<"Extrema EE is not done"<<endl;
+ }
+ else
+ {
+ Standard_Integer imin = 1;
+ for (Standard_Integer iext = 2; iext <= ExtrEE.NbExt(); iext++)
+ if (ExtrEE.SquareDistance(iext) < ExtrEE.SquareDistance(imin))
+ imin = iext;
+ Standard_Real TolEE = sqrt(ExtrEE.SquareDistance(imin));
+ gp_Pnt PntOnE1 = ExtrEE.PointOnE1(imin);
+ gp_Pnt PntOnE2 = ExtrEE.PointOnE2(imin);
+ Standard_Real DistVtoE1 = PntVtx.Distance(PntOnE1);
+ Standard_Real DistVtoE2 = PntVtx.Distance(PntOnE2);
+ TolEE = Max(TolEE, DistVtoE1);
+ TolEE = Max(TolEE, DistVtoE2);
+ if (TolEE < TolReached)
+ {
+ TolReached = TolEE;
+ PntOnPrev = PntOnE1;
+ PntOnCur = PntOnE2;
+ ParamOnPrev = ExtrEE.ParameterOnE1(imin);
+ ParamOnCur = ExtrEE.ParameterOnE2(imin);
+ }
+ }
+ if (CurNewVertex.IsNull())
+ {
+ gp_Pnt NewPnt((PntOnPrev.XYZ() + PntOnCur.XYZ())/2);
+ CurNewVertex = BRepLib_MakeVertex(NewPnt);
+ myVertexNewVertex.Bind(theCurVertex, CurNewVertex);
+ }
+ BB.UpdateVertex(CurNewVertex, TolReached);
+ if (!EdgeContains(thePrevNewEdge, CurNewVertex))
+ PutVertexToEdge(CurNewVertex, theCurVertex, thePrevNewEdge, thePrevEdge, ParamOnPrev);
+
+ if (!EdgeContains(theCurNewEdge, CurNewVertex))
+ PutVertexToEdge(CurNewVertex, theCurVertex, theCurNewEdge, theCurEdge, ParamOnCur);
+ } //two new edges: intersect
+ else if ((myEdgeNewEdge.IsBound(thePrevEdge) || myOrientedEdgeNewEdge.IsBound(thePrevEdge)) ||
+ (myEdgeNewEdge.IsBound(theCurEdge) || myOrientedEdgeNewEdge.IsBound(theCurEdge))) //one constant edge: project point onto curve
+ {
+ TopoDS_Edge ConstantEdge, ModifiedEdge, NewEdge;
+ if (myEdgeNewEdge.IsBound(thePrevEdge) || myOrientedEdgeNewEdge.IsBound(thePrevEdge))
+ {
+ ConstantEdge = theCurEdge;
+ ModifiedEdge = thePrevEdge;
+ NewEdge = thePrevNewEdge;
+ }
+ else
+ {
+ ConstantEdge = thePrevEdge;
+ ModifiedEdge = theCurEdge;
+ NewEdge = theCurNewEdge;
+ }
+ Standard_Real ParamOnConstEdge = BRep_Tool::Parameter(theCurVertex, ConstantEdge);
+ BRepAdaptor_Curve BAcurve(ConstantEdge);
+ BRepAdaptor_Curve BAnewcurve(NewEdge);
+ gp_Pnt ConstPnt = BAcurve.Value(ParamOnConstEdge);
+ Extrema_ExtPC Projector(ConstPnt, BAnewcurve);
+ if (!Projector.IsDone() || Projector.NbExt() == 0)
+ {
+ cout<<endl<<"Intersection of edges in face: extrema point-curve is not done"<<endl;
+ }
+ Standard_Real ParamOnNewEdge = BAnewcurve.FirstParameter();
+ if (Projector.IsDone() && Projector.NbExt() > 0)
+ {
+ Standard_Integer indmin = 1;
+ for (Standard_Integer ind = 2; ind <= Projector.NbExt(); ind++)
+ if (Projector.SquareDistance(ind) < Projector.SquareDistance(indmin))
+ indmin = ind;
+ ParamOnNewEdge = Projector.Point(indmin).Parameter();
+ Standard_Real TolReached = sqrt(Projector.SquareDistance(indmin));
+ BB.UpdateVertex(theCurVertex, TolReached);
+ }
+ if (!EdgeContains(NewEdge, CurNewVertex))
+ PutVertexToEdge(CurNewVertex, theCurVertex, NewEdge, ModifiedEdge, ParamOnNewEdge);
+ } //else (one constant edge: project point onto curve)
+ else //two constant edges
+ {
+ //nothing ?
+ }
+}
+
+
+void BRepOffsetAPI_PatchFaces::PutVertexToEdge(const TopoDS_Vertex& theVertex,
+ const TopoDS_Vertex& theProVertex,
+ TopoDS_Edge& theEdge,
+ const TopoDS_Edge& theProEdge,
+ const Standard_Real theParamOnEdge)
+{
+ BRep_Builder BB;
+
+ TopAbs_Orientation anOr = OrientationInEdge(theProVertex, theProEdge);
+ if (myEdgeNewEdge.IsBound(theProEdge) &&
+ myEdgeNewEdge(theProEdge).Orientation() == TopAbs_REVERSED)
+ anOr = TopAbs::Reverse(anOr);
+
+ TopoDS_Shape F_Edge = theEdge.Oriented(TopAbs_FORWARD);
+ F_Edge.Free(Standard_True);
+ BB.Add(F_Edge, theVertex.Oriented(anOr));
+ Standard_Real fpar, lpar;
+ BRep_Tool::Range(theEdge, fpar, lpar);
+ if (anOr == TopAbs_FORWARD)
+ BB.Range(theEdge, theParamOnEdge, lpar);
+ else
+ BB.Range(theEdge, fpar, theParamOnEdge);
+}
projects / occt-copy.git / commitdiff