#include <TopTools_MapOfShape.hxx>
#include <TopTools_SequenceOfShape.hxx>
+#include <NCollection_QuickSort.hxx>
+#include <BRepTopAdaptor_FClass2d.hxx>
+#include <Geom2dInt_GInter.hxx>
+#include <BRepTools_ReShape.hxx>
+#include <Poly_MakeLoops.hxx>
+#include <BRepBuilderAPI_MakeWire.hxx>
+#include <BRepFill.hxx>
+#include <ShapeFix_Wire.hxx>
+#include <ShapeAnalysis_WireOrder.hxx>
+#include <NCollection_UBTreeFiller.hxx>
+#include <BndLib_Add2dCurve.hxx>
+#include <Bnd_Box2d.hxx>
+#include <NCollection_UBTree.hxx>
+#include <NCollection_Array1.hxx>
+#include <BRepAdaptor_Curve2d.hxx>
+#include <BRepGProp.hxx>
+#include <GProp_GProps.hxx>
+
#include <stdio.h>
#ifdef OCCT_DEBUG
//#define DRAW
#endif
#endif
+//! deriatives of the edges on both ends
+struct BRepFill_TangentLinkInfo
+{
+ gp_Dir2d myD1L;
+ gp_Dir2d myD1F;
+};
+
+typedef NCollection_UBTree <Standard_Integer, Bnd_Box2d> BRepFill_BndBoxTree;
+
+//! used to select overlapping 2d boxes
+class BRepFill_BndBoxTreeSelector : public BRepFill_BndBoxTree::Selector
+{
+public:
+ BRepFill_BndBoxTreeSelector( TopTools_SequenceOfShape& theSeqOfEdges,
+ const TopoDS_Face& theWFace,
+ Standard_Real thePrec)
+ : BRepFill_BndBoxTreeSelector::Selector(), mySeqOfEdges (theSeqOfEdges),
+ myWFace (theWFace), myPrec(thePrec) {}
+
+ BRepFill_BndBoxTreeSelector(const BRepFill_BndBoxTreeSelector& );
+ BRepFill_BndBoxTreeSelector& operator=(const BRepFill_BndBoxTreeSelector& );
+
+ Standard_Boolean Reject (const Bnd_Box2d& theBox) const
+ {
+ return (myCBox.IsOut (theBox));
+ }
+
+ Standard_Boolean Accept (const Standard_Integer& theObj)
+ {
+ //intersection between bounding boxes is found, try to find intersection of edges
+ if (theObj < myCInd) //intersection operation on some diff edges is symmetrical
+ {
+ TopoDS_Edge E1 = TopoDS::Edge(mySeqOfEdges(theObj));
+ TopoDS_Edge E2 = TopoDS::Edge(mySeqOfEdges(myCInd));
+ {
+ BRepAdaptor_Curve2d BA1(E1, myWFace);
+ BRepAdaptor_Curve2d BA2(E2, myWFace);
+ Geom2dInt_GInter inter(BA1, BA2, myPrec, myPrec);
+ if (inter.IsDone())
+ {
+ //check result points relative to already existing vertices
+ TopTools_IndexedMapOfShape aVV;
+ TopExp::MapShapes(E1, TopAbs_VERTEX, aVV); //?? create for all vertexes at once?
+ TopExp::MapShapes(E2, TopAbs_VERTEX, aVV);
+ for (Standard_Integer i = 1; i <= inter.NbPoints(); i++)
+ {
+ const IntRes2d_IntersectionPoint& anIPnt = inter.Point(i);
+ Standard_Real Param1 = anIPnt.ParamOnFirst();
+ Standard_Real Param2 = anIPnt.ParamOnSecond();
+
+ Standard_Real f1, f2, l1, l2;
+ TopLoc_Location Loc1, Loc2;
+ gp_Pnt p3d1, p3d2;
+ Handle_Geom_Curve aCur1 = BRep_Tool::Curve(E1, Loc1, f1, l1 );
+ Handle_Geom_Curve aCur2 = BRep_Tool::Curve(E2, Loc2, f2, l2 );
+ aCur1->D0(Param1, p3d1);
+ aCur2->D0(Param2, p3d2);
+ if (!Loc1.IsIdentity())
+ p3d1.Transform(Loc1.Transformation());
+ if (!Loc2.IsIdentity())
+ p3d2.Transform(Loc2.Transformation());
+ gp_Pnt IntPnt((p3d1.XYZ() + p3d2.XYZ())/2.); //middle point of two intersection points of edge1 & edge2
+
+ Standard_Real TolE1 = BRep_Tool::Tolerance(E1);
+ Standard_Real TolE2 = BRep_Tool::Tolerance(E2);
+ Standard_Real aFutTol = 1.001* ((TolE1 > TolE2 ? TolE1 : TolE2) + (p3d1.Distance(p3d2)/2.));
+
+ Standard_Boolean CreateNewV = Standard_True;
+ for (Standard_Integer i = 1; i <= aVV.Extent(); i++)
+ {
+ const TopoDS_Vertex& V = TopoDS::Vertex(aVV.FindKey(i));
+ gp_Pnt PV = BRep_Tool::Pnt(V);
+ Standard_Real TolV = BRep_Tool::Tolerance(V);
+ if (PV.SquareDistance(IntPnt) < (TolV+aFutTol)*(TolV+aFutTol)) //??
+ {
+ CreateNewV = Standard_False;
+ break;
+ }
+ }
+
+ if (CreateNewV)
+ {
+ // Make vertex from intersection point
+ TopoDS_Vertex V;
+ myBuilder.MakeVertex(V, IntPnt, aFutTol);
+
+ // Save result of intersection to the map (edge -> seq. of parameters/vert on it)
+ if (!myOutMapOfResult.Contains(E1))
+ {
+ NCollection_DataMap<Standard_Real, TopoDS_Vertex> EP1;
+ EP1.Bind(Param1, V);
+ myOutMapOfResult.Add(E1, EP1);
+ }
+ else
+ myOutMapOfResult.ChangeFromKey(E1).Bind(Param1, V);
+
+ if (!myOutMapOfResult.Contains(E2))
+ {
+ NCollection_DataMap<Standard_Real, TopoDS_Vertex> EP2;
+ EP2.Bind(Param2, V);
+ myOutMapOfResult.Add(E2, EP2);
+ }
+ else
+ myOutMapOfResult.ChangeFromKey(E2).Bind(Param2, V);
+ }
+ }
+ }
+
+ }
+ }
+ else if (theObj == myCInd) //try to find self-intersection of edge
+ {
+ TopoDS_Edge E = TopoDS::Edge(mySeqOfEdges(theObj));
+
+ BRepAdaptor_Curve2d BA(E, myWFace);
+ Geom2dInt_GInter inter(BA, myPrec, myPrec);
+
+ if (inter.IsDone())
+ for (Standard_Integer i = 1; i <= inter.NbPoints(); i++)
+ {
+ //check if intersect point is close to some vertex?
+ Standard_Real Param1 = inter.Point(i).ParamOnFirst();
+ Standard_Real Param2 = inter.Point(i).ParamOnSecond();
+
+ // Make vertex from intersection point
+ TopoDS_Vertex V;
+
+ Standard_Real f1, l1;
+ TopLoc_Location Loc1;
+ gp_Pnt p3d1, p3d2;
+ Handle_Geom_Curve aCur = BRep_Tool::Curve(E, Loc1, f1, l1 );
+ aCur->D0(Param1, p3d1);
+ aCur->D0(Param2, p3d2);
+ if (!Loc1.IsIdentity())
+ p3d1.Transform(Loc1.Transformation());
+ gp_Pnt IntPnt((p3d1.XYZ() + p3d2.XYZ())/2.);
+ Standard_Real TolE1 = BRep_Tool::Tolerance(E);
+
+ myBuilder.MakeVertex(V, IntPnt, 1.01* (TolE1 + (p3d1.Distance(p3d2)/2.)));
+
+ // Save result of intersection to the map (edge -> seq. of parameters/vert on it)
+ if (!myOutMapOfResult.Contains(E))
+ {
+ NCollection_DataMap<Standard_Real, TopoDS_Vertex> EP;
+ EP.Bind(Param1, V);
+ EP.Bind(Param2, V);
+ myOutMapOfResult.Add(E, EP);
+ }
+ else
+ {
+ NCollection_DataMap<Standard_Real, TopoDS_Vertex>& Vals = myOutMapOfResult.ChangeFromKey(E);
+ Vals.Bind(Param1, V);
+ Vals.Bind(Param2, V);
+ }
+ }
+
+ }
+ return Standard_True;
+ }
+
+ void ClearResult()
+ {
+ myOutMapOfResult.Clear();
+ }
+
+ void SetCurrentBox (const Bnd_Box2d& theBox, Standard_Integer theInd)
+ {
+ myCBox = theBox;
+ myCInd = theInd;
+ }
+
+ void GetResult( NCollection_IndexedDataMap<TopoDS_Edge,
+ NCollection_DataMap<Standard_Real, TopoDS_Vertex>>& theOutMapOfResult)
+ {
+ theOutMapOfResult = myOutMapOfResult;
+ }
+
+private:
+ TopTools_SequenceOfShape& mySeqOfEdges; //edges to be intersected with each other
+ const TopoDS_Face& myWFace; //work spine
+ NCollection_IndexedDataMap<TopoDS_Edge, NCollection_DataMap<Standard_Real, TopoDS_Vertex>> myOutMapOfResult; // edge to it's intersection parameters (param + vertex)
+ //?? NCollection_DataMap<Standard_Real, TopoDS_Vertex> - typedef this??
+ Bnd_Box2d myCBox;
+ Standard_Integer myCInd;
+ BRep_Builder myBuilder;
+ Standard_Real myPrec;
+};
+
+
+class Poly_Helper : public Poly_MakeLoops2D::Helper
+{
+public:
+ Poly_Helper( const NCollection_DataMap<Poly_MakeLoops2D::Link, BRepFill_TangentLinkInfo>& mL2TI,
+ const NCollection_DataMap<Standard_Integer, Poly_MakeLoops2D::ListOfLink>& themNode2ListOfLinks) :
+ myL2TI (mL2TI),
+ mymNode2ListOfLinks (themNode2ListOfLinks)
+ {
+ //Poly_MakeLoops2D::Helper();
+ };
+ Poly_Helper(const Poly_Helper& theOther) : Poly_MakeLoops2D::Helper(theOther),
+ mymNode2ListOfLinks (theOther.mymNode2ListOfLinks), myL2TI (theOther.myL2TI)
+ {
+ };
+
+ Poly_Helper& operator= (const Poly_Helper &theOther);
+
+ virtual const Poly_MakeLoops2D::ListOfLink& GetAdjacentLinks (Standard_Integer theNode) const
+ {
+ return mymNode2ListOfLinks(theNode);
+ }
+ virtual Standard_Boolean GetFirstTangent(const Poly_MakeLoops2D::Link& theLink, gp_Dir2d& theDir) const
+ {
+ theDir = myL2TI(theLink).myD1F;
+ return Standard_True;
+ }
+
+ virtual Standard_Boolean GetLastTangent(const Poly_MakeLoops2D::Link& theLink, gp_Dir2d& theDir) const
+ {
+ theDir = myL2TI(theLink).myD1L;
+ return Standard_True;
+ }
+
+private:
+ const NCollection_DataMap<Poly_MakeLoops2D::Link, BRepFill_TangentLinkInfo>& myL2TI;
+ const NCollection_DataMap<Standard_Integer, Poly_MakeLoops2D::ListOfLink>& mymNode2ListOfLinks;
+
+};
+
// Modified by Sergey KHROMOV - Thu Nov 16 17:24:39 2000 Begin
static void QuasiFleche(const Adaptor3d_Curve& C,
Standard_Boolean CheckSmallParamOnEdge(const TopoDS_Edge& anEdge);
+static void FillNode2LLMap(Standard_Integer NewNode, const Poly_MakeLoops2D::Link& NewLink,
+ NCollection_DataMap<Standard_Integer, Poly_MakeLoops2D::ListOfLink>& mNode2ListOfLinks);
+
+static void CollectWires(TopoDS_Compound& outCmp, Standard_Integer ind,
+ const NCollection_Sequence<TopoDS_Wire>& FWS, const NCollection_Sequence<TopoDS_Wire>& SWS);
+
+void FindWireIntersections(const TopoDS_Wire& theW, const TopoDS_Face& theWorkSpine,
+ NCollection_IndexedDataMap<TopoDS_Edge, NCollection_DataMap<Standard_Real, TopoDS_Vertex>>& theME2IP);
+
+void InsertIntersectionPoints(const NCollection_IndexedDataMap<TopoDS_Edge, NCollection_DataMap<Standard_Real, TopoDS_Vertex>>& theME2IP,
+ TopoDS_Wire& theW);
+
+Standard_Boolean ReorderWires(TopoDS_Wire& theW);
+
+Standard_Boolean FindLoops(const TopoDS_Wire& theW, const TopoDS_Face& theWorkSpine, NCollection_List<TopoDS_Shape>& theLoops);
+
+Standard_Boolean ClassifyLoops(const NCollection_List<TopoDS_Shape>& theLoops, NCollection_Sequence<TopoDS_Wire>& theIWires,
+ NCollection_Sequence<TopoDS_Wire>& theHoleWires, const TopoDS_Face& theWorkSpine, Standard_Integer& MaxMassInd, Standard_Boolean& IsMaxIsHole );
+
+static Standard_Boolean RemoveLoops(TopoDS_Shape& theInputSh, const TopoDS_Face& theWorkSpine );
+
//=======================================================================
//function : KPartCircle
//purpose :
if (!myIsOpenResult)
FixHoles();
+ RemoveLoops(myShape, myWorkSpine);
+
myIsDone = Standard_True;
}
return Standard_True;
}
+static void FillNode2LLMap(Standard_Integer NewNode, const Poly_MakeLoops2D::Link& NewLink,
+ NCollection_DataMap<Standard_Integer, Poly_MakeLoops2D::ListOfLink>& mNode2ListOfLinks)
+{
+ if (!mNode2ListOfLinks.IsBound(NewNode))
+ mNode2ListOfLinks.Bound(NewNode, Poly_MakeLoops2D::ListOfLink())->Append(NewLink);
+ else
+ mNode2ListOfLinks(NewNode).Append(NewLink);
+}
+
+static void CollectWires(TopoDS_Compound& outCmp, Standard_Integer ind,
+ const NCollection_Sequence<TopoDS_Wire>& theFWS, const NCollection_Sequence<TopoDS_Wire>& theSWS)
+{
+ BRep_Builder BBC;
+ BBC.MakeCompound(outCmp);
+ TopoDS_Wire OuterWire = theFWS(ind);
+ BBC.Add(outCmp, OuterWire);
+ for (Standard_Integer i = 1; i <= theSWS.Length(); i++)
+ BBC.Add(outCmp, theSWS(i));
+}
+
+void FindWireIntersections(const TopoDS_Wire& theW, const TopoDS_Face& theWorkSpine,
+ NCollection_IndexedDataMap<TopoDS_Edge, NCollection_DataMap<Standard_Real, TopoDS_Vertex>>& theME2IP)
+{
+ TopExp_Explorer ExpE( theW, TopAbs_EDGE );
+ TopTools_SequenceOfShape Seq;
+ for (; ExpE.More(); ExpE.Next())
+ Seq.Append( ExpE.Current() );
+
+ //Prepare UBTree filler
+ BRepFill_BndBoxTree aTree;
+ NCollection_UBTreeFiller <Standard_Integer, Bnd_Box2d> aTreeFiller (aTree);
+
+ BRepFill_BndBoxTreeSelector aSelector(Seq, theWorkSpine, Precision::Confusion());
+
+ // Prepare bounding boxes
+ NCollection_Sequence<Bnd_Box2d> BndBoxesOfEdges;
+ for (Standard_Integer i = 1; i <= Seq.Length(); i++)
+ {
+ Standard_Real f, l;
+ //too many calls of CurveOnSurface in removeloops. try to use adaptors and cache them??
+ Handle_Geom2d_Curve aCur = BRep_Tool::CurveOnSurface(TopoDS::Edge(Seq(i)), theWorkSpine, f, l );
+ Bnd_Box2d aBox;
+ BndLib_Add2dCurve::Add( aCur, f, l, 0., aBox );
+ aTreeFiller.Add(i, aBox);
+ BndBoxesOfEdges.Append(aBox);
+ }
+
+ aTreeFiller.Fill();
+
+ //Perform searching and intersecting of edges
+ aSelector.ClearResult();
+ for (Standard_Integer i = 1; i <= BndBoxesOfEdges.Size(); i++)
+ {
+ aSelector.SetCurrentBox(BndBoxesOfEdges(i), i);
+ aTree.Select(aSelector);
+ }
+
+ aSelector.GetResult(theME2IP);
+}
+
+void InsertIntersectionPoints(const NCollection_IndexedDataMap<TopoDS_Edge, NCollection_DataMap<Standard_Real, TopoDS_Vertex>>& theME2IP,
+ TopoDS_Wire& theW)
+{
+ //Insert intersection points
+ BRep_Builder BB;
+ BRepTools_ReShape reshape; //?? use "internal" reshape here??
+ for (Standard_Integer i = 1; i <= theME2IP.Extent(); i++)
+ {
+ const TopoDS_Edge& E = theME2IP.FindKey(i);
+ const NCollection_DataMap<Standard_Real, TopoDS_Vertex>& Params = theME2IP.FindFromIndex(i);
+ Handle_Geom_Curve aCur;
+ Standard_Real f, l;
+ aCur = BRep_Tool::Curve(E, f, l );
+
+ //prepare params on the edge
+ Standard_Integer nbPext = Params.Extent();
+ NCollection_Array1<Standard_Real> ParamArr(1, nbPext + 2);
+ Standard_Integer k = 1;
+ for ( NCollection_DataMap<Standard_Real, TopoDS_Vertex>::Iterator itP(Params); itP.More(); itP.Next(), k++)
+ ParamArr(k) = itP.Key();
+ ParamArr(nbPext+1) = f;
+ ParamArr(nbPext+2) = l;
+
+ //sort parameters
+ NCollection_QuickSort<NCollection_Array1<Standard_Real>, Standard_Real>::Perform(ParamArr, NCollection_Comparator<Standard_Real>(), ParamArr.Lower(), ParamArr.Upper());
+ NCollection_Array1<TopoDS_Vertex> aVOnEdge (1, nbPext + 2); //Vertexes on the edge which divide it by the intersection points into sequence of edges
+
+ aVOnEdge(1) = TopExp::FirstVertex(E);
+ for (Standard_Integer i = 2; i < ParamArr.Length(); i++)
+ {
+ Standard_Real P = ParamArr(i);
+ aVOnEdge(i) = Params(P);
+ }
+ aVOnEdge(nbPext+2) = TopExp::LastVertex(E);
+
+ //Split old edge => Construct a sequence of new edges
+ TopoDS_Edge DE;
+ BRepBuilderAPI_MakeWire MW;
+ for (Standard_Integer j = 1; j < aVOnEdge.Length(); j++)
+ {
+ //make all sub-edges forward
+ DE = TopoDS::Edge(E.EmptyCopied().Oriented(TopAbs_FORWARD));
+ BB.Range(DE, ParamArr(j), ParamArr(j+1));
+ BB.Add(DE, aVOnEdge(j).Oriented(TopAbs_FORWARD));
+ BB.Add(DE, aVOnEdge(j+1).Oriented(TopAbs_REVERSED));
+ if (BRep_Tool::Degenerated(DE))
+ continue;
+ MW.Add(DE);
+ }
+
+ MW.Build();
+ TopoDS_Wire TW = MW.Wire();
+
+ //replace the old edge with the new wire
+ //take orientation from the old (non-intersected) edge
+ TW.Orientation(E.Orientation());
+ reshape.Replace(E, TW);
+ }
+
+ theW = TopoDS::Wire(reshape.Apply(theW));
+}
+
+Standard_Boolean ReorderWires(TopoDS_Wire& theW)
+{
+ //Perform reorder of wire
+ //?? this can change overall orientation of wire(for ex, hole should be remain hole after this fixing etc)
+ Handle(ShapeExtend_WireData) aWireData = new ShapeExtend_WireData;
+ Handle(ShapeFix_Wire) aShFixWire = new ShapeFix_Wire;
+
+ Handle(ShapeAnalysis_Wire) aWireAnalyzer;
+ ShapeAnalysis_WireOrder aWireOrder;
+
+ aShFixWire->Load(aWireData);
+ aShFixWire->SetPrecision(1e-7);
+
+ TopExp_Explorer Exp1( theW, TopAbs_EDGE );
+ for (; Exp1.More(); Exp1.Next())
+ aWireData->Add(TopoDS::Edge(Exp1.Current()));
+
+ aWireOrder.KeepLoopsMode() = 0;
+ aWireAnalyzer = aShFixWire->Analyzer();
+ aShFixWire->ModifyTopologyMode() = Standard_True;
+ aWireAnalyzer->CheckOrder(aWireOrder, Standard_True);
+ aWireOrder.Perform(1);
+ aShFixWire->ClosedWireMode() = 1;
+ aShFixWire->FixReorder(aWireOrder);
+ //aShFixWire->FixDegenerated();
+ Standard_Boolean IsDone = !aShFixWire->StatusReorder(ShapeExtend_FAIL);
+ if (!IsDone)
+ return Standard_False;
+
+ theW = aWireData->Wire();
+ return Standard_True;
+}
+
+Standard_Boolean FindLoops(const TopoDS_Wire& theW, const TopoDS_Face& theWorkSpine, NCollection_List<TopoDS_Shape>& theLoops)
+{
+ NCollection_List<TopoDS_Shape> SelfLoops;
+ TopTools_IndexedMapOfShape mN2V;
+ TopExp::MapShapes(theW, TopAbs_VERTEX, mN2V);
+
+ NCollection_DataMap<Standard_Integer, Poly_MakeLoops2D::ListOfLink> mNode2ListOfLinks;
+ NCollection_DataMap<Poly_MakeLoops2D::Link, BRepFill_TangentLinkInfo> mL2TI;
+ //Create links for Poly_MakeLoops algo and bind them to the existing edges
+ NCollection_DataMap<Poly_MakeLoops2D::Link, TopoDS_Edge> mL2E;
+ Standard_Integer LastIndV = mN2V.Extent();
+ TopExp_Explorer ExpE;
+ ExpE.Init(theW, TopAbs_EDGE);
+ for (; ExpE.More(); ExpE.Next())
+ {
+ TopoDS_Edge E = TopoDS::Edge(ExpE.Current());
+
+ // If edge contains only one vertex => self loop (should be non degenerated)
+ TopoDS_Vertex FV, LV;
+ FV = TopExp::FirstVertex(E, Standard_True);
+ LV = TopExp::LastVertex(E, Standard_True);
+ if (FV.IsSame(LV))
+ {
+ if (!BRep_Tool::Degenerated(E))
+ SelfLoops.Append(E);
+ continue;
+ }
+
+ Handle_Geom2d_Curve aCur;
+ Standard_Real f, l;
+ gp_Pnt2d Pnt;
+ gp_Vec2d Vec;
+ gp_Dir2d D1F, D1L;
+ aCur = BRep_Tool::CurveOnSurface(E, theWorkSpine, f, l );
+ if (aCur.IsNull())
+ continue;
+ TopAbs_Orientation EOri = E.Orientation();
+ if (EOri == TopAbs_FORWARD) //?? yet again, use adaptor here??
+ {
+ aCur->D1(f, Pnt, Vec);
+ D1F.SetCoord(Vec.X(), Vec.Y());
+ aCur->D1(l, Pnt, Vec);
+ D1L.SetCoord(Vec.X(), Vec.Y());
+ }
+ else if (EOri == TopAbs_REVERSED)
+ {
+ aCur->D1(l, Pnt, Vec);
+ D1F.SetCoord(-Vec.X(), -Vec.Y());
+ aCur->D1(f, Pnt, Vec);
+ D1L.SetCoord(-Vec.X(), -Vec.Y());
+ }
+ else
+ continue;
+
+ Standard_Integer Node1 = mN2V.FindIndex(FV);
+ Standard_Integer Node2 = mN2V.FindIndex(LV);
+
+ Poly_MakeLoops2D::Link aLink(Node1, Node2);
+ aLink.flags = Poly_MakeLoops2D::LF_Fwd;
+ if (!mL2E.IsBound(aLink))
+ {
+ mL2E.Bind(aLink, E);
+ FillNode2LLMap(Node1, aLink, mNode2ListOfLinks);
+ FillNode2LLMap(Node2, aLink, mNode2ListOfLinks);
+ BRepFill_TangentLinkInfo* Info = mL2TI.Bound(aLink, BRepFill_TangentLinkInfo());
+ Info->myD1F = D1F;
+ Info->myD1L = D1L;
+ }
+ else
+ {
+ //link have been met twise. This may indicate that it is has
+ //opposite direction now. Try to divide it (node1, node2) => (node1, ind) + (ind, node2)
+ //so it can be passed to loop maker
+ LastIndV++;
+ Poly_MakeLoops2D::Link aLink1(Node1, LastIndV);
+ Poly_MakeLoops2D::Link aLink2(LastIndV, Node2);
+ aLink1.flags = Poly_MakeLoops2D::LF_Fwd;
+ aLink2.flags = Poly_MakeLoops2D::LF_Fwd;
+ mL2E.Bind(aLink1, E);
+ mL2E.Bind(aLink2, TopoDS_Edge()); //indicates that one edge represented as two links
+
+ FillNode2LLMap(Node1, aLink1, mNode2ListOfLinks);
+ FillNode2LLMap(Node2, aLink2, mNode2ListOfLinks);
+ FillNode2LLMap(LastIndV, aLink1, mNode2ListOfLinks);
+ FillNode2LLMap(LastIndV, aLink2, mNode2ListOfLinks);
+
+ BRepFill_TangentLinkInfo* Info1 = mL2TI.Bound(aLink1, BRepFill_TangentLinkInfo());
+ Info1->myD1F = D1F;
+ Info1->myD1L = gp_Dir2d(1., 1.);
+ BRepFill_TangentLinkInfo* Info2 = mL2TI.Bound(aLink2, BRepFill_TangentLinkInfo());
+ Info2->myD1F = gp_Dir2d(1., 1.);
+ Info2->myD1L = D1L;
+ }
+ }
+
+ Poly_Helper helper(mL2TI, mNode2ListOfLinks);
+ Poly_MakeLoops2D aLoopMaker(1, &helper, NCollection_BaseAllocator::CommonBaseAllocator() );
+ for (NCollection_DataMap<Poly_MakeLoops2D::Link, TopoDS_Edge>::Iterator aMapIt (mL2E); aMapIt.More(); aMapIt.Next())
+ aLoopMaker.AddLink(aMapIt.Key());
+
+ aLoopMaker.Perform(); //try to find loops
+ Standard_Integer NbLoops = aLoopMaker.GetNbLoops();
+ Standard_Integer NbHangs = aLoopMaker.GetNbHanging();
+
+ if (NbLoops == 0 || NbHangs != 0 ) //or allow hang wires??
+ return Standard_False;
+
+ for (Standard_Integer i = 1; i <= NbLoops; i++) //loops to wires
+ {
+ Poly_MakeLoops2D::Loop aLoop = aLoopMaker.GetLoop(i);
+ Poly_MakeLoops2D::Loop::Iterator it(aLoop);
+ BRepBuilderAPI_MakeWire aWM;
+ TopoDS_Edge E;
+ for (;it.More(); it.Next())
+ {
+ E = mL2E(it.Value());
+ //if null => probably this edge was passed as two links (based on the same edge); so skip this edge
+ if (!E.IsNull())
+ aWM.Add(E);
+ }
+ if (aWM.IsDone())
+ {
+ TopoDS_Wire W = aWM.Wire();
+ if (W.Closed()) //?? just ignore non closed wires??
+ theLoops.Append(W);
+ }
+ }
+
+ theLoops.Append(SelfLoops);
+ return Standard_True;
+
+}
+
+Standard_Boolean ClassifyLoops(const NCollection_List<TopoDS_Shape>& theLoops, NCollection_Sequence<TopoDS_Wire>& theIWires,
+ NCollection_Sequence<TopoDS_Wire>& theHoleWires, const TopoDS_Face& theWorkSpine, Standard_Integer& MaxMassInd, Standard_Boolean& IsMaxIsHole )
+{
+ // try to classify wires
+ BRepTopAdaptor_FClass2d* CFPointer = NULL;
+ NCollection_List<TopoDS_Shape>::Iterator itL(theLoops);
+ Standard_Real MaxMass = 0;
+
+ for (; itL.More(); itL.Next())
+ {
+ TopoDS_Shape OSh = itL.Value();
+ if (OSh.IsNull())
+ continue;
+
+ TopoDS_Face af = TopoDS::Face(theWorkSpine.EmptyCopied());
+ af.Orientation ( TopAbs_FORWARD );
+ BRep_Builder BB;
+
+ if (OSh.ShapeType() == TopAbs_EDGE)
+ {
+ BRepBuilderAPI_MakeWire WM;
+ WM.Add(TopoDS::Edge(OSh));
+ OSh = WM.Wire();
+ }
+
+ BB.Add (af, OSh);
+
+ //try to use class2d only if mass is really low?? (after sprops checking)
+ BRepTopAdaptor_FClass2d* FClass = new BRepTopAdaptor_FClass2d(af, 0);
+ TopAbs_State st = FClass->PerformInfinitePoint();
+
+ if (st == TopAbs_IN)
+ theHoleWires.Append(TopoDS::Wire(OSh));
+ else if (st == TopAbs_OUT)
+ theIWires.Append(TopoDS::Wire(OSh));
+ else
+ {
+ delete FClass; //just exclude this loop if ori == unknown??
+ continue;
+ }
+
+ // IN or OUT states
+ GProp_GProps pr;
+ BRepGProp::SurfaceProperties(af, pr, 0.);
+ Standard_Real CurMass = Abs(pr.Mass());
+ if (CurMass > MaxMass)
+ {
+ MaxMass = CurMass;
+ delete CFPointer;
+ CFPointer = FClass;
+ if (st == TopAbs_IN)
+ {
+ MaxMassInd = theHoleWires.Upper();
+ IsMaxIsHole = Standard_True; //max loop defines a hole
+ }
+ else //OUT
+ {
+ MaxMassInd = theIWires.Upper();
+ IsMaxIsHole = Standard_False;
+ }
+ }
+ else
+ delete FClass;
+
+ }
+
+ if (!IsMaxIsHole && theIWires.Length() <= theHoleWires.Length() ||
+ IsMaxIsHole && theIWires.Length() >= theHoleWires.Length())
+ {
+ if (CFPointer)
+ delete CFPointer;
+ return Standard_False;
+ }
+
+ //ensure that extern/outer wire contains all other wires with the same orientation
+ Standard_Boolean bFoundOuterP = Standard_True;
+ Standard_Integer nbExt = IsMaxIsHole ? theIWires.Length() : theHoleWires.Length();
+ for (Standard_Integer i = 1; i <= nbExt; i++)
+ {
+ if (i == MaxMassInd)
+ continue;
+ TopExp_Explorer ExpE( IsMaxIsHole ? theIWires(i) : theHoleWires(i), TopAbs_EDGE );
+ Standard_Real f, l;
+ Handle_Geom2d_Curve aCur;
+ gp_Pnt2d MP;
+ TopAbs_State cs = TopAbs_UNKNOWN;
+ while ((cs == TopAbs_UNKNOWN || cs == TopAbs_ON) && ExpE.More())
+ {
+ aCur = BRep_Tool::CurveOnSurface(TopoDS::Edge(ExpE.Current()), theWorkSpine, f, l );
+ MP = aCur->Value((l + f) / 2.0);
+ cs = CFPointer->Perform(MP);
+ ExpE.Next(); //try next edge
+ }
+ if (!IsMaxIsHole && cs != TopAbs_IN ||
+ IsMaxIsHole && cs != TopAbs_OUT)
+ {
+ bFoundOuterP = Standard_False;
+ break;
+ }
+ }
+
+ delete CFPointer;
+
+ if (!bFoundOuterP)
+ return Standard_False; //cant find an outer wire
+ else
+ return Standard_True;
+}
+
+//! Used to remove loops from offset result
+static Standard_Boolean RemoveLoops(TopoDS_Shape& theInputSh, const TopoDS_Face& theWorkSpine )
+{
+ BRepTools_ReShape reshape;
+
+ TopExp_Explorer Exp( theInputSh, TopAbs_WIRE );
+
+ for (; Exp.More(); Exp.Next())
+ {
+ TopoDS_Wire InitialW = TopoDS::Wire( Exp.Current() );
+ if (!InitialW.Closed())
+ continue;
+
+ TopoDS_Wire aW = TopoDS::Wire( Exp.Current() );
+
+ //(output result) map edge to params on this edges (indexed for debuging)
+ NCollection_IndexedDataMap<TopoDS_Edge, NCollection_DataMap<Standard_Real, TopoDS_Vertex>> ME2IP;
+ FindWireIntersections(aW, theWorkSpine, ME2IP);
+
+ //no intersection points => go to the next wire
+ if (ME2IP.IsEmpty())
+ continue;
+
+ InsertIntersectionPoints(ME2IP, aW);
+
+ if (!ReorderWires(aW))
+ continue;
+
+ NCollection_List<TopoDS_Shape> aLoops;
+ if (!FindLoops(aW, theWorkSpine, aLoops))
+ continue;
+
+ if (aLoops.IsEmpty())
+ continue;
+
+ NCollection_Sequence<TopoDS_Wire> IWires;
+ NCollection_Sequence<TopoDS_Wire> HoleWires; //wires which defines a hole
+ Standard_Boolean IsMaxIsHole = Standard_False;
+ Standard_Integer MaxMassInd = -1;
+
+ if (!ClassifyLoops(aLoops, IWires, HoleWires, theWorkSpine, MaxMassInd, IsMaxIsHole))
+ continue;
+
+ //make compound: outer wire + holes
+ TopoDS_Compound Co;
+ if (!IsMaxIsHole)
+ CollectWires(Co, MaxMassInd, IWires, HoleWires);
+ else
+ CollectWires(Co, MaxMassInd, HoleWires, IWires);
+
+ reshape.Replace(InitialW, Co);
+
+ }
+
+ theInputSh = reshape.Apply(theInputSh);
+ return Standard_True;
+}
+
projects / occt-copy.git / commitdiff