src/GEOMImpl/GEOMImpl_ShapeDriver.cxx

   1 // Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   6 // This library is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU Lesser General Public
   8 // License as published by the Free Software Foundation; either
   9 // version 2.1 of the License.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // Lesser General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU Lesser General Public
  17 // License along with this library; if not, write to the Free Software
  18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 //
  20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 //
  22
  23 #include <GEOMImpl_ShapeDriver.hxx>
  24
  25 #include <GEOMImpl_IShapes.hxx>
  26 #include <GEOMImpl_IVector.hxx>
  27 #include <GEOMImpl_Types.hxx>
  28 #include <GEOMImpl_Block6Explorer.hxx>
  29
  30 #include <GEOM_Function.hxx>
  31
  32 // OCCT Includes
  33 #include <ShapeFix_Wire.hxx>
  34 #include <ShapeFix_Edge.hxx>
  35 #include <ShapeFix_Shape.hxx>
  36
  37 #include <BRep_Builder.hxx>
  38 #include <BRep_Tool.hxx>
  39 #include <BRepAdaptor_Curve.hxx>
  40 #include <BRepAlgo_FaceRestrictor.hxx>
  41 #include <BRepBuilderAPI_Copy.hxx>
  42 #include <BRepBuilderAPI_Sewing.hxx>
  43 #include <BRepBuilderAPI_MakeWire.hxx>
  44 #include <BRepBuilderAPI_MakeEdge.hxx>
  45 #include <BRepCheck.hxx>
  46 #include <BRepCheck_Analyzer.hxx>
  47 #include <BRepCheck_Shell.hxx>
  48 #include <BRepClass3d_SolidClassifier.hxx>
  49 #include <BRepLib.hxx>
  50 #include <BRepLib_MakeEdge.hxx>
  51 #include <BRepTools_WireExplorer.hxx>
  52
  53 #include <ShapeAnalysis_FreeBounds.hxx>
  54
  55 #include <TopAbs.hxx>
  56 #include <TopExp.hxx>
  57 #include <TopExp_Explorer.hxx>
  58 #include <TopoDS.hxx>
  59 #include <TopoDS_Shape.hxx>
  60 #include <TopoDS_Edge.hxx>
  61 #include <TopoDS_Wire.hxx>
  62 #include <TopoDS_Shell.hxx>
  63 #include <TopoDS_Solid.hxx>
  64 #include <TopoDS_Compound.hxx>
  65 #include <TopoDS_Iterator.hxx>
  66
  67 #include <TopTools_MapOfShape.hxx>
  68 #include <TopTools_HSequenceOfShape.hxx>
  69
  70 #include <ElCLib.hxx>
  71
  72 #include <GCPnts_AbscissaPoint.hxx>
  73
  74 #include <Geom_TrimmedCurve.hxx>
  75 #include <GeomAbs_CurveType.hxx>
  76 #include <GeomConvert_CompCurveToBSplineCurve.hxx>
  77 #include <GeomConvert.hxx>
  78 #include <GeomLProp.hxx>
  79
  80 #include <TColStd_SequenceOfReal.hxx>
  81 #include <TColStd_HSequenceOfTransient.hxx>
  82 #include <TColStd_Array1OfReal.hxx>
  83 #include <TColGeom_SequenceOfCurve.hxx>
  84 #include <TColGeom_Array1OfBSplineCurve.hxx>
  85 #include <TColGeom_HArray1OfBSplineCurve.hxx>
  86
  87 #include <Precision.hxx>
  88
  89 #include <Standard_NullObject.hxx>
  90 #include <Standard_TypeMismatch.hxx>
  91 #include <Standard_ConstructionError.hxx>
  92
  93 //modified by NIZNHY-PKV Wed Dec 28 13:48:20 2011f
  94 //static
  95 //  void KeepEdgesOrder(const Handle(TopTools_HSequenceOfShape)& aEdges,
  96 //                    const Handle(TopTools_HSequenceOfShape)& aWires);
  97 //modified by NIZNHY-PKV Wed Dec 28 13:48:23 2011t
  98
  99 //=======================================================================
 100 //function : GetID
 101 //purpose  :
 102 //=======================================================================
 103 const Standard_GUID& GEOMImpl_ShapeDriver::GetID()
 104 {
 105   static Standard_GUID aShapeDriver("FF1BBB54-5D14-4df2-980B-3A668264EA16");
 106   return aShapeDriver;
 107 }
 108
 109
 110 //=======================================================================
 111 //function : GEOMImpl_ShapeDriver
 112 //purpose  :
 113 //=======================================================================
 114 GEOMImpl_ShapeDriver::GEOMImpl_ShapeDriver()
 115 {
 116 }
 117
 118 //=======================================================================
 119 //function : Execute
 120 //purpose  :
 121 //=======================================================================
 122 Standard_Integer GEOMImpl_ShapeDriver::Execute(TFunction_Logbook& log) const
 123 {
 124   if (Label().IsNull()) return 0;
 125   Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
 126
 127   GEOMImpl_IShapes aCI (aFunction);
 128   Standard_Integer aType = aFunction->GetType();
 129
 130   TopoDS_Shape aShape;
 131   TCollection_AsciiString aWarning;
 132
 133   BRep_Builder B;
 134
 135   if (aType == WIRE_EDGES) {
 136     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 137
 138     Standard_Real aTolerance = aCI.GetTolerance();
 139     if (aTolerance < Precision::Confusion())
 140       aTolerance = Precision::Confusion();
 141
 142     aShape = MakeWireFromEdges(aShapes, aTolerance);
 143   }
 144   else if (aType == FACE_WIRE) {
 145     Handle(GEOM_Function) aRefBase = aCI.GetBase();
 146     TopoDS_Shape aShapeBase = aRefBase->GetValue();
 147     if (aShapeBase.IsNull()) Standard_NullObject::Raise("Argument Shape is null");
 148     TopoDS_Wire W;
 149     if (aShapeBase.ShapeType() == TopAbs_WIRE) {
 150       W = TopoDS::Wire(aShapeBase);
 151       // check the wire is closed
 152       TopoDS_Vertex aV1, aV2;
 153       TopExp::Vertices(W, aV1, aV2);
 154       if ( !aV1.IsNull() && !aV2.IsNull() && aV1.IsSame(aV2) )
 155         aShapeBase.Closed(true);
 156       else
 157         Standard_NullObject::Raise
 158           ("Shape for face construction is not closed");
 159     }
 160     else if (aShapeBase.ShapeType() == TopAbs_EDGE && aShapeBase.Closed()) {
 161       BRepBuilderAPI_MakeWire MW;
 162       MW.Add(TopoDS::Edge(aShapeBase));
 163       if (!MW.IsDone()) {
 164         Standard_ConstructionError::Raise("Wire construction failed");
 165       }
 166       W = MW;
 167     }
 168     else {
 169       Standard_NullObject::Raise
 170         ("Shape for face construction is neither a wire nor a closed edge");
 171     }
 172     aWarning = GEOMImpl_Block6Explorer::MakeFace(W, aCI.GetIsPlanar(), aShape);
 173     if (aShape.IsNull()) {
 174       Standard_ConstructionError::Raise("Face construction failed");
 175     }
 176   }
 177   else if (aType == FACE_WIRES) {
 178     // Try to build a face from a set of wires and edges
 179     int ind;
 180
 181     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 182     int nbshapes = aShapes->Length();
 183     if (nbshapes < 1) {
 184       Standard_ConstructionError::Raise("No wires or edges given");
 185     }
 186
 187     // 1. Extract all edges from the given arguments
 188     TopTools_MapOfShape aMapEdges;
 189     Handle(TopTools_HSequenceOfShape) aSeqEdgesIn = new TopTools_HSequenceOfShape;
 190
 191     for (ind = 1; ind <= nbshapes; ind++) {
 192       Handle(GEOM_Function) aRefSh_i = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 193       TopoDS_Shape aSh_i = aRefSh_i->GetValue();
 194
 195       TopExp_Explorer anExpE_i (aSh_i, TopAbs_EDGE);
 196       for (; anExpE_i.More(); anExpE_i.Next()) {
 197         if (aMapEdges.Add(anExpE_i.Current())) {
 198           aSeqEdgesIn->Append(anExpE_i.Current());
 199         }
 200       }
 201     }
 202
 203     // 2. Connect edges to wires of maximum length
 204     Handle(TopTools_HSequenceOfShape) aSeqWiresOut;
 205     ShapeAnalysis_FreeBounds::ConnectEdgesToWires(aSeqEdgesIn, Precision::Confusion(),
 206                                                   /*shared*/Standard_False, aSeqWiresOut);
 207     //modified by NIZNHY-PKV Wed Dec 28 13:46:55 2011f
 208     //KeepEdgesOrder(aSeqEdgesIn, aSeqWiresOut);
 209     //modified by NIZNHY-PKV Wed Dec 28 13:46:59 2011t
 210
 211     // 3. Separate closed wires
 212     Handle(TopTools_HSequenceOfShape) aSeqClosedWires = new TopTools_HSequenceOfShape;
 213     Handle(TopTools_HSequenceOfShape) aSeqOpenWires = new TopTools_HSequenceOfShape;
 214     for (ind = 1; ind <= aSeqWiresOut->Length(); ind++) {
 215       if (aSeqWiresOut->Value(ind).Closed())
 216         aSeqClosedWires->Append(aSeqWiresOut->Value(ind));
 217       else
 218         aSeqOpenWires->Append(aSeqWiresOut->Value(ind));
 219     }
 220
 221     if (aSeqClosedWires->Length() < 1) {
 222       Standard_ConstructionError::Raise
 223         ("There is no closed contour can be built from the given arguments");
 224     }
 225
 226     // 4. Build a face / list of faces from all the obtained closed wires
 227
 228     // 4.a. Basic face
 229     TopoDS_Shape aFFace;
 230     TopoDS_Wire aW1 = TopoDS::Wire(aSeqClosedWires->Value(1));
 231     aWarning = GEOMImpl_Block6Explorer::MakeFace(aW1, aCI.GetIsPlanar(), aFFace);
 232     if (aFFace.IsNull()) {
 233       Standard_ConstructionError::Raise("Face construction failed");
 234     }
 235
 236     // 4.b. Add other wires
 237     if (aSeqClosedWires->Length() == 1) {
 238       aShape = aFFace;
 239     }
 240     else {
 241       TopoDS_Compound C;
 242       BRep_Builder aBuilder;
 243       aBuilder.MakeCompound(C);
 244       BRepAlgo_FaceRestrictor FR;
 245
 246       TopAbs_Orientation OriF = aFFace.Orientation();
 247       TopoDS_Shape aLocalS = aFFace.Oriented(TopAbs_FORWARD);
 248       FR.Init(TopoDS::Face(aLocalS), Standard_False, Standard_True);
 249
 250       for (ind = 1; ind <= aSeqClosedWires->Length(); ind++) {
 251         TopoDS_Wire aW = TopoDS::Wire(aSeqClosedWires->Value(ind));
 252         FR.Add(aW);
 253       }
 254
 255       FR.Perform();
 256
 257       if (FR.IsDone()) {
 258         int k = 0;
 259         TopoDS_Shape aFace;
 260         for (; FR.More(); FR.Next()) {
 261           aFace = FR.Current().Oriented(OriF);
 262           aBuilder.Add(C, aFace);
 263           k++;
 264         }
 265         if (k == 1) {
 266           aShape = aFace;
 267         } else {
 268           aShape = C;
 269         }
 270       }
 271     }
 272
 273     // 5. Add all open wires to the result
 274     if (aSeqOpenWires->Length() > 0) {
 275       //Standard_ConstructionError::Raise("There are some open wires");
 276       TopoDS_Compound C;
 277       BRep_Builder aBuilder;
 278       if (aSeqClosedWires->Length() == 1) {
 279         aBuilder.MakeCompound(C);
 280         aBuilder.Add(C, aShape);
 281       }
 282       else {
 283         C = TopoDS::Compound(aShape);
 284       }
 285
 286       for (ind = 1; ind <= aSeqOpenWires->Length(); ind++) {
 287         aBuilder.Add(C, aSeqOpenWires->Value(ind));
 288       }
 289
 290       aShape = C;
 291     }
 292   }
 293   else if (aType == SHELL_FACES) {
 294     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 295     unsigned int ind, nbshapes = aShapes->Length();
 296
 297     // add faces
 298     BRepBuilderAPI_Sewing aSewing (Precision::Confusion()*10.0);
 299     for (ind = 1; ind <= nbshapes; ind++) {
 300       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 301       TopoDS_Shape aShape_i = aRefShape->GetValue();
 302       if (aShape_i.IsNull()) {
 303         Standard_NullObject::Raise("Face for shell construction is null");
 304       }
 305       aSewing.Add(aShape_i);
 306     }
 307
 308     aSewing.Perform();
 309
 310     TopoDS_Shape sh = aSewing.SewedShape();
 311
 312     if (sh.ShapeType()==TopAbs_FACE && nbshapes==1) {
 313       // case for creation of shell from one face - PAL12722 (skl 26.06.2006)
 314       TopoDS_Shell ss;
 315       B.MakeShell(ss);
 316       B.Add(ss,sh);
 317       aShape = ss;
 318     }
 319     else {
 320       //TopExp_Explorer exp (aSewing.SewedShape(), TopAbs_SHELL);
 321       TopExp_Explorer exp (sh, TopAbs_SHELL);
 322       Standard_Integer ish = 0;
 323       for (; exp.More(); exp.Next()) {
 324         aShape = exp.Current();
 325         ish++;
 326       }
 327
 328       if (ish != 1) {
 329         // try the case of one face (Mantis issue 0021809)
 330         TopExp_Explorer expF (sh, TopAbs_FACE);
 331         Standard_Integer ifa = 0;
 332         for (; expF.More(); expF.Next()) {
 333           aShape = expF.Current();
 334           ifa++;
 335         }
 336
 337         if (ifa == 1) {
 338           TopoDS_Shell ss;
 339           B.MakeShell(ss);
 340           B.Add(ss,aShape);
 341           aShape = ss;
 342         }
 343         else {
 344           aShape = aSewing.SewedShape();
 345         }
 346       }
 347     }
 348
 349   }
 350   else if (aType == SOLID_SHELL) {
 351     Handle(GEOM_Function) aRefShell = aCI.GetBase();
 352     TopoDS_Shape aShapeShell = aRefShell->GetValue();
 353     if (!aShapeShell.IsNull() && aShapeShell.ShapeType() == TopAbs_COMPOUND) {
 354       TopoDS_Iterator It (aShapeShell, Standard_True, Standard_True);
 355       if (It.More()) aShapeShell = It.Value();
 356     }
 357     if (aShapeShell.IsNull() || aShapeShell.ShapeType() != TopAbs_SHELL) {
 358       Standard_NullObject::Raise("Shape for solid construction is null or not a shell");
 359     }
 360
 361     BRepCheck_Shell chkShell(TopoDS::Shell(aShapeShell));
 362     if (chkShell.Closed() == BRepCheck_NotClosed) return 0;
 363
 364     TopoDS_Solid Sol;
 365     B.MakeSolid(Sol);
 366     B.Add(Sol, aShapeShell);
 367     BRepClass3d_SolidClassifier SC (Sol);
 368     SC.PerformInfinitePoint(Precision::Confusion());
 369     if (SC.State() == TopAbs_IN) {
 370       B.MakeSolid(Sol);
 371       B.Add(Sol, aShapeShell.Reversed());
 372     }
 373
 374     aShape = Sol;
 375
 376   }
 377   else if (aType == SOLID_SHELLS) {
 378     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 379     unsigned int ind, nbshapes = aShapes->Length();
 380     Standard_Integer ish = 0;
 381     TopoDS_Solid Sol;
 382     B.MakeSolid(Sol);
 383
 384     // add shapes
 385     for (ind = 1; ind <= nbshapes; ind++) {
 386       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 387       TopoDS_Shape aShapeShell = aRefShape->GetValue();
 388       if (aShapeShell.IsNull()) {
 389         Standard_NullObject::Raise("Shell for solid construction is null");
 390       }
 391       if (aShapeShell.ShapeType() == TopAbs_COMPOUND) {
 392         TopoDS_Iterator It (aShapeShell, Standard_True, Standard_True);
 393         if (It.More()) aShapeShell = It.Value();
 394       }
 395       if (aShapeShell.ShapeType() == TopAbs_SHELL) {
 396         B.Add(Sol, aShapeShell);
 397         ish++;
 398       }
 399     }
 400     if (ish == 0) return 0;
 401     BRepClass3d_SolidClassifier SC (Sol);
 402     SC.PerformInfinitePoint(Precision::Confusion());
 403     if (SC.State() == TopAbs_IN)
 404       aShape = Sol.Reversed();
 405     else
 406       aShape = Sol;
 407   }
 408   else if (aType == COMPOUND_SHAPES) {
 409     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 410     unsigned int ind, nbshapes = aShapes->Length();
 411
 412     // add shapes
 413     TopoDS_Compound C;
 414     B.MakeCompound(C);
 415     for (ind = 1; ind <= nbshapes; ind++) {
 416       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 417       TopoDS_Shape aShape_i = aRefShape->GetValue();
 418       if (aShape_i.IsNull()) {
 419         Standard_NullObject::Raise("Shape for compound construction is null");
 420       }
 421       B.Add(C, aShape_i);
 422     }
 423
 424     aShape = C;
 425
 426   }
 427   /*
 428   else if (aType == REVERSE_ORIENTATION) {
 429     Handle(GEOM_Function) aRefShape = aCI.GetBase();
 430     TopoDS_Shape aShape_i = aRefShape->GetValue();
 431     if (aShape_i.IsNull()) {
 432        Standard_NullObject::Raise("Shape for reverse is null");
 433     }
 434
 435     BRepBuilderAPI_Copy Copy(aShape_i);
 436     if( Copy.IsDone() ) {
 437       TopoDS_Shape tds = Copy.Shape();
 438       if( tds.IsNull() ) {
 439         Standard_ConstructionError::Raise("Orientation aborted : Can not reverse the shape");
 440       }
 441
 442       if( tds.Orientation() == TopAbs_FORWARD)
 443         tds.Orientation(TopAbs_REVERSED);
 444       else
 445         tds.Orientation(TopAbs_FORWARD);
 446
 447       aShape = tds;
 448     }
 449   }
 450   */
 451   else if (aType == EDGE_WIRE) {
 452     Handle(GEOM_Function) aRefBase = aCI.GetBase();
 453     TopoDS_Shape aWire = aRefBase->GetValue();
 454     Standard_Real LinTol = aCI.GetTolerance();
 455     Standard_Real AngTol = aCI.GetAngularTolerance();
 456     if (aWire.IsNull()) Standard_NullObject::Raise("Argument Wire is null");
 457
 458     aShape = MakeEdgeFromWire(aWire, LinTol, AngTol);
 459   }
 460   else if (aType == EDGE_CURVE_LENGTH) {
 461     GEOMImpl_IVector aVI (aFunction);
 462
 463     // RefCurve
 464     Handle(GEOM_Function) aRefCurve = aVI.GetPoint1();
 465     if (aRefCurve.IsNull()) Standard_NullObject::Raise("Argument Curve is null");
 466     TopoDS_Shape aRefShape1 = aRefCurve->GetValue();
 467     if (aRefShape1.ShapeType() != TopAbs_EDGE) {
 468       Standard_TypeMismatch::Raise
 469         ("Edge On Curve creation aborted : curve shape is not an edge");
 470     }
 471     TopoDS_Edge aRefEdge = TopoDS::Edge(aRefShape1);
 472     TopoDS_Vertex V1, V2;
 473     TopExp::Vertices(aRefEdge, V1, V2, Standard_True);
 474
 475     // RefPoint
 476     TopoDS_Vertex aRefVertex;
 477     Handle(GEOM_Function) aRefPoint = aVI.GetPoint2();
 478     if (aRefPoint.IsNull()) {
 479       aRefVertex = V1;
 480     }
 481     else {
 482       TopoDS_Shape aRefShape2 = aRefPoint->GetValue();
 483       if (aRefShape2.ShapeType() != TopAbs_VERTEX) {
 484         Standard_TypeMismatch::Raise
 485           ("Edge On Curve creation aborted : start point shape is not a vertex");
 486       }
 487       aRefVertex = TopoDS::Vertex(aRefShape2);
 488     }
 489     gp_Pnt aRefPnt = BRep_Tool::Pnt(aRefVertex);
 490
 491     // Length
 492     Standard_Real aLength = aVI.GetParameter();
 493     //Standard_Real aCurveLength = IntTools::Length(aRefEdge);
 494     //if (aLength > aCurveLength) {
 495     //  Standard_ConstructionError::Raise
 496     //    ("Edge On Curve creation aborted : given length is greater than edges length");
 497     //}
 498     if (fabs(aLength) < Precision::Confusion()) {
 499       Standard_ConstructionError::Raise
 500         ("Edge On Curve creation aborted : given length is smaller than Precision::Confusion()");
 501     }
 502
 503     // Check orientation
 504     Standard_Real UFirst, ULast;
 505     Handle(Geom_Curve) EdgeCurve = BRep_Tool::Curve(aRefEdge, UFirst, ULast);
 506     Handle(Geom_Curve) ReOrientedCurve = EdgeCurve;
 507
 508     Standard_Real dU = ULast - UFirst;
 509     Standard_Real par1 = UFirst + 0.1 * dU;
 510     Standard_Real par2 = ULast  - 0.1 * dU;
 511
 512     gp_Pnt P1 = EdgeCurve->Value(par1);
 513     gp_Pnt P2 = EdgeCurve->Value(par2);
 514
 515     if (aRefPnt.SquareDistance(P2) < aRefPnt.SquareDistance(P1)) {
 516       ReOrientedCurve = EdgeCurve->Reversed();
 517       UFirst = EdgeCurve->ReversedParameter(ULast);
 518     }
 519
 520     // Get the point by length
 521     GeomAdaptor_Curve AdapCurve = GeomAdaptor_Curve(ReOrientedCurve);
 522     GCPnts_AbscissaPoint anAbsPnt (AdapCurve, aLength, UFirst);
 523     Standard_Real aParam = anAbsPnt.Parameter();
 524
 525     if (AdapCurve.IsClosed() && aLength < 0.0) {
 526       Standard_Real aTmp = aParam;
 527       aParam = UFirst;
 528       UFirst = aTmp;
 529     }
 530
 531     BRepBuilderAPI_MakeEdge aME (ReOrientedCurve, UFirst, aParam);
 532     if (aME.IsDone())
 533       aShape = aME.Shape();
 534   }
 535   else {
 536   }
 537
 538   if (aShape.IsNull()) return 0;
 539
 540   // Check shape validity
 541   BRepCheck_Analyzer ana (aShape, false);
 542   if (!ana.IsValid()) {
 543     //Standard_ConstructionError::Raise("Algorithm have produced an invalid shape result");
 544     // For Mantis issue 0021772: EDF 2336 GEOM: Non valid face created from two circles
 545     Handle(ShapeFix_Shape) aSfs = new ShapeFix_Shape (aShape);
 546     aSfs->Perform();
 547     aShape = aSfs->Shape();
 548   }
 549
 550   aFunction->SetValue(aShape);
 551
 552   log.SetTouched(Label());
 553
 554   if (!aWarning.IsEmpty())
 555     Standard_Failure::Raise(aWarning.ToCString());
 556
 557   return 1;
 558 }
 559
 560 TopoDS_Wire GEOMImpl_ShapeDriver::MakeWireFromEdges(const Handle(TColStd_HSequenceOfTransient)& theEdgesFuncs,
 561                                                     const Standard_Real theTolerance)
 562 {
 563   BRep_Builder B;
 564
 565   TopoDS_Wire aWire;
 566   B.MakeWire(aWire);
 567
 568   // add edges
 569   for (unsigned int ind = 1; ind <= theEdgesFuncs->Length(); ind++) {
 570     Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(theEdgesFuncs->Value(ind));
 571     TopoDS_Shape aShape_i = aRefShape->GetValue();
 572     if (aShape_i.IsNull()) {
 573       Standard_NullObject::Raise("Shape for wire construction is null");
 574     }
 575     if (aShape_i.ShapeType() == TopAbs_EDGE || aShape_i.ShapeType() == TopAbs_WIRE) {
 576       TopExp_Explorer exp (aShape_i, TopAbs_EDGE);
 577       for (; exp.More(); exp.Next())
 578         B.Add(aWire, TopoDS::Edge(exp.Current()));
 579     } else {
 580       Standard_TypeMismatch::Raise
 581         ("Shape for wire construction is neither an edge nor a wire");
 582     }
 583   }
 584
 585   // fix edges order
 586   Handle(ShapeFix_Wire) aFW = new ShapeFix_Wire;
 587   aFW->Load(aWire);
 588   aFW->FixReorder();
 589
 590   if (aFW->StatusReorder(ShapeExtend_FAIL1)) {
 591     Standard_ConstructionError::Raise("Wire construction failed: several loops detected");
 592   }
 593   else if (aFW->StatusReorder(ShapeExtend_FAIL)) {
 594     Standard_ConstructionError::Raise("Wire construction failed");
 595   }
 596   else {
 597   }
 598
 599   // IMP 0019766: Building a Wire from unconnected edges by introducing a tolerance
 600   aFW->ClosedWireMode() = Standard_False;
 601   aFW->FixConnected(theTolerance);
 602   if (aFW->StatusConnected(ShapeExtend_FAIL)) {
 603     Standard_ConstructionError::Raise("Wire construction failed: cannot build connected wire");
 604   }
 605   // IMP 0019766
 606   if (aFW->StatusConnected(ShapeExtend_DONE3)) {
 607     // Confused with <prec> but not Analyzer.Precision(), set the same
 608     aFW->FixGapsByRangesMode() = Standard_True;
 609     if (aFW->FixGaps3d()) {
 610       Handle(ShapeExtend_WireData) sbwd = aFW->WireData();
 611       Handle(ShapeFix_Edge) aFe = new ShapeFix_Edge;
 612       for (Standard_Integer iedge = 1; iedge <= sbwd->NbEdges(); iedge++) {
 613         TopoDS_Edge aEdge = TopoDS::Edge(sbwd->Edge(iedge));
 614         aFe->FixVertexTolerance(aEdge);
 615         aFe->FixSameParameter(aEdge);
 616       }
 617     }
 618     else if (aFW->StatusGaps3d(ShapeExtend_FAIL)) {
 619       Standard_ConstructionError::Raise("Wire construction failed: cannot fix 3d gaps");
 620     }
 621   }
 622   aWire = aFW->WireAPIMake();
 623
 624   return aWire;
 625 }
 626
 627 TopoDS_Edge GEOMImpl_ShapeDriver::MakeEdgeFromWire(const TopoDS_Shape& aWire,
 628                                                    const Standard_Real LinTol,
 629                                                    const Standard_Real AngTol)
 630 {
 631     TopoDS_Edge ResEdge;
 632
 633     BRepLib::BuildCurves3d(aWire);
 634     Handle(ShapeFix_Shape) Fixer = new ShapeFix_Shape(aWire);
 635     Fixer->SetPrecision(LinTol);
 636     Fixer->SetMaxTolerance(LinTol);
 637     Fixer->Perform();
 638     TopoDS_Wire theWire = TopoDS::Wire(Fixer->Shape());
 639
 640     TColGeom_SequenceOfCurve CurveSeq;
 641     TopTools_SequenceOfShape LocSeq;
 642     TColStd_SequenceOfReal FparSeq;
 643     TColStd_SequenceOfReal LparSeq;
 644     TColStd_SequenceOfReal TolSeq;
 645     GeomAbs_CurveType CurType;
 646     TopoDS_Vertex FirstVertex, LastVertex;
 647     Standard_Boolean FinalReverse = Standard_False;
 648
 649     BRepTools_WireExplorer wexp(theWire) ;
 650     for (; wexp.More(); wexp.Next())
 651     {
 652       TopoDS_Edge anEdge = wexp.Current();
 653       Standard_Real fpar, lpar;
 654       TopLoc_Location aLoc;
 655       Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, aLoc, fpar, lpar);
 656       if (aCurve.IsNull())
 657         continue;
 658
 659       BRepAdaptor_Curve BAcurve(anEdge);
 660       GeomAbs_CurveType aType = BAcurve.GetType();
 661
 662       Handle(Geom_Curve) aBasisCurve = BAcurve.Curve().Curve();
 663
 664       if (aBasisCurve->IsPeriodic())
 665         ElCLib::AdjustPeriodic(aBasisCurve->FirstParameter(), aBasisCurve->LastParameter(),
 666                                Precision::PConfusion(), fpar, lpar);
 667
 668       if (CurveSeq.IsEmpty())
 669       {
 670         CurveSeq.Append(aCurve);
 671         TopoDS_Shape aLocShape;
 672         aLocShape.Location(aLoc);
 673         aLocShape.Orientation(wexp.Orientation());
 674         LocSeq.Append(aLocShape);
 675         FparSeq.Append(fpar);
 676         LparSeq.Append(lpar);
 677         CurType = aType;
 678         FirstVertex = wexp.CurrentVertex();
 679         if (anEdge.Orientation() == TopAbs_REVERSED)
 680           FinalReverse = Standard_True;
 681       }
 682       else
 683       {
 684         Standard_Boolean Done = Standard_False;
 685         Standard_Real NewFpar, NewLpar;
 686         GeomAdaptor_Curve GAprevcurve(CurveSeq.Last());
 687         TopoDS_Vertex CurVertex = wexp.CurrentVertex();
 688         TopoDS_Vertex CurFirstVer = TopExp::FirstVertex(anEdge);
 689         TopAbs_Orientation ConnectByOrigin = (CurVertex.IsSame(CurFirstVer))? TopAbs_FORWARD : TopAbs_REVERSED;
 690         if (aCurve == CurveSeq.Last())
 691         {
 692           NewFpar = fpar;
 693           NewLpar = lpar;
 694           if (aBasisCurve->IsPeriodic())
 695           {
 696             if (NewLpar < NewFpar)
 697               NewLpar += aBasisCurve->Period();
 698             if (ConnectByOrigin == TopAbs_FORWARD)
 699               ElCLib::AdjustPeriodic(FparSeq.Last(),
 700                                      FparSeq.Last() + aBasisCurve->Period(),
 701                                      Precision::PConfusion(), NewFpar, NewLpar);
 702             else
 703               ElCLib::AdjustPeriodic(FparSeq.Last() - aBasisCurve->Period(),
 704                                      FparSeq.Last(),
 705                                      Precision::PConfusion(), NewFpar, NewLpar);
 706           }
 707           Done = Standard_True;
 708         }
 709         else if (aType == CurType &&
 710                  aType != GeomAbs_BezierCurve &&
 711                  aType != GeomAbs_BSplineCurve &&
 712                  aType != GeomAbs_OtherCurve)
 713         {
 714           switch (aType)
 715           {
 716           case GeomAbs_Line:
 717             {
 718               gp_Lin aLine    = BAcurve.Line();
 719               gp_Lin PrevLine = GAprevcurve.Line();
 720               if (aLine.Contains(PrevLine.Location(), LinTol) &&
 721                   aLine.Direction().IsParallel(PrevLine.Direction(), AngTol))
 722               {
 723                 gp_Pnt P1 = ElCLib::Value(fpar, aLine);
 724                 gp_Pnt P2 = ElCLib::Value(lpar, aLine);
 725                 NewFpar = ElCLib::Parameter(PrevLine, P1);
 726                 NewLpar = ElCLib::Parameter(PrevLine, P2);
 727                 if (NewLpar < NewFpar)
 728                 {
 729                   Standard_Real MemNewFpar = NewFpar;
 730                   NewFpar = NewLpar;
 731                   NewLpar = MemNewFpar;
 732                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 733                 }
 734                 Done = Standard_True;
 735               }
 736               break;
 737             }
 738           case GeomAbs_Circle:
 739             {
 740               gp_Circ aCircle    = BAcurve.Circle();
 741               gp_Circ PrevCircle = GAprevcurve.Circle();
 742               if (aCircle.Location().Distance(PrevCircle.Location()) <= LinTol &&
 743                   Abs(aCircle.Radius() - PrevCircle.Radius()) <= LinTol &&
 744                   aCircle.Axis().IsParallel(PrevCircle.Axis(), AngTol))
 745               {
 746                 if (aCircle.Axis().Direction() * PrevCircle.Axis().Direction() < 0.)
 747                 {
 748                   Standard_Real memfpar = fpar;
 749                   fpar = lpar;
 750                   lpar = memfpar;
 751                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 752                 }
 753                 gp_Pnt P1 = ElCLib::Value(fpar, aCircle);
 754                 gp_Pnt P2 = ElCLib::Value(lpar, aCircle);
 755                 NewFpar = ElCLib::Parameter(PrevCircle, P1);
 756                 NewLpar = ElCLib::Parameter(PrevCircle, P2);
 757                 if (NewLpar < NewFpar)
 758                   NewLpar += 2.*M_PI;
 759                 //Standard_Real MemNewFpar = NewFpar, MemNewLpar =  NewLpar;
 760                 if (ConnectByOrigin == TopAbs_FORWARD)
 761                   ElCLib::AdjustPeriodic(FparSeq.Last(),
 762                                          FparSeq.Last() + 2.*M_PI,
 763                                          Precision::PConfusion(), NewFpar, NewLpar);
 764                 else
 765                   ElCLib::AdjustPeriodic(FparSeq.Last() - 2.*M_PI,
 766                                          FparSeq.Last(),
 767                                          Precision::PConfusion(), NewFpar, NewLpar);
 768                 Done = Standard_True;
 769               }
 770               break;
 771             }
 772           case GeomAbs_Ellipse:
 773             {
 774               gp_Elips anEllipse   = BAcurve.Ellipse();
 775               gp_Elips PrevEllipse = GAprevcurve.Ellipse();
 776               if (anEllipse.Focus1().Distance(PrevEllipse.Focus1()) <= LinTol &&
 777                   anEllipse.Focus2().Distance(PrevEllipse.Focus2()) <= LinTol &&
 778                   Abs(anEllipse.MajorRadius() - PrevEllipse.MajorRadius()) <= LinTol &&
 779                   Abs(anEllipse.MinorRadius() - PrevEllipse.MinorRadius()) <= LinTol &&
 780                   anEllipse.Axis().IsParallel(PrevEllipse.Axis(), AngTol))
 781               {
 782                 if (anEllipse.Axis().Direction() * PrevEllipse.Axis().Direction() < 0.)
 783                 {
 784                   Standard_Real memfpar = fpar;
 785                   fpar = lpar;
 786                   lpar = memfpar;
 787                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 788                 }
 789                 gp_Pnt P1 = ElCLib::Value(fpar, anEllipse);
 790                 gp_Pnt P2 = ElCLib::Value(lpar, anEllipse);
 791                 NewFpar = ElCLib::Parameter(PrevEllipse, P1);
 792                 NewLpar = ElCLib::Parameter(PrevEllipse, P2);
 793                 if (NewLpar < NewFpar)
 794                   NewLpar += 2.*M_PI;
 795                 if (ConnectByOrigin == TopAbs_FORWARD)
 796                   ElCLib::AdjustPeriodic(FparSeq.Last(),
 797                                          FparSeq.Last() + 2.*M_PI,
 798                                          Precision::PConfusion(), NewFpar, NewLpar);
 799                 else
 800                   ElCLib::AdjustPeriodic(FparSeq.Last() - 2.*M_PI,
 801                                          FparSeq.Last(),
 802                                          Precision::PConfusion(), NewFpar, NewLpar);
 803                 Done = Standard_True;
 804               }
 805               break;
 806             }
 807           case GeomAbs_Hyperbola:
 808             {
 809               gp_Hypr aHypr    = BAcurve.Hyperbola();
 810               gp_Hypr PrevHypr = GAprevcurve.Hyperbola();
 811               if (aHypr.Focus1().Distance(PrevHypr.Focus1()) <= LinTol &&
 812                   aHypr.Focus2().Distance(PrevHypr.Focus2()) <= LinTol &&
 813                   Abs(aHypr.MajorRadius() - PrevHypr.MajorRadius()) <= LinTol &&
 814                   Abs(aHypr.MinorRadius() - PrevHypr.MinorRadius()) <= LinTol &&
 815                   aHypr.Axis().IsParallel(PrevHypr.Axis(), AngTol))
 816               {
 817                 gp_Pnt P1 = ElCLib::Value(fpar, aHypr);
 818                 gp_Pnt P2 = ElCLib::Value(lpar, aHypr);
 819                 NewFpar = ElCLib::Parameter(PrevHypr, P1);
 820                 NewLpar = ElCLib::Parameter(PrevHypr, P2);
 821                 if (NewLpar < NewFpar)
 822                 {
 823                   Standard_Real MemNewFpar = NewFpar;
 824                   NewFpar = NewLpar;
 825                   NewLpar = MemNewFpar;
 826                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 827                 }
 828                 Done = Standard_True;
 829               }
 830               break;
 831             }
 832           case GeomAbs_Parabola:
 833             {
 834               gp_Parab aParab    = BAcurve.Parabola();
 835               gp_Parab PrevParab = GAprevcurve.Parabola();
 836               if (aParab.Location().Distance(PrevParab.Location()) <= LinTol &&
 837                   aParab.Focus().Distance(PrevParab.Focus()) <= LinTol &&
 838                   Abs(aParab.Focal() - PrevParab.Focal()) <= LinTol &&
 839                   aParab.Axis().IsParallel(PrevParab.Axis(), AngTol))
 840               {
 841                 gp_Pnt P1 = ElCLib::Value(fpar, aParab);
 842                 gp_Pnt P2 = ElCLib::Value(lpar, aParab);
 843                 NewFpar = ElCLib::Parameter(PrevParab, P1);
 844                 NewLpar = ElCLib::Parameter(PrevParab, P2);
 845                 if (NewLpar < NewFpar)
 846                 {
 847                   Standard_Real MemNewFpar = NewFpar;
 848                   NewFpar = NewLpar;
 849                   NewLpar = MemNewFpar;
 850                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 851                 }
 852                 Done = Standard_True;
 853               }
 854               break;
 855             }
 856           } //end of switch (aType)
 857         } // end of else if (aType == CurType && ...
 858         if (Done)
 859         {
 860           if (NewFpar < FparSeq.Last())
 861             FparSeq(FparSeq.Length()) = NewFpar;
 862           else
 863             LparSeq(LparSeq.Length()) = NewLpar;
 864         }
 865         else
 866         {
 867           CurveSeq.Append(aCurve);
 868           TopoDS_Shape aLocShape;
 869           aLocShape.Location(aLoc);
 870           aLocShape.Orientation(wexp.Orientation());
 871           LocSeq.Append(aLocShape);
 872           FparSeq.Append(fpar);
 873           LparSeq.Append(lpar);
 874           TolSeq.Append(BRep_Tool::Tolerance(CurVertex));
 875           CurType = aType;
 876         }
 877       } // end of else (CurveSeq.IsEmpty()) -> not first time
 878     } // end for (; wexp.More(); wexp.Next())
 879
 880     LastVertex = wexp.CurrentVertex();
 881     TolSeq.Append(BRep_Tool::Tolerance(LastVertex));
 882
 883     TopoDS_Vertex FirstVtx_final = (FinalReverse)? LastVertex : FirstVertex;
 884     FirstVtx_final.Orientation(TopAbs_FORWARD);
 885     TopoDS_Vertex LastVtx_final = (FinalReverse)? FirstVertex : LastVertex;
 886     LastVtx_final.Orientation(TopAbs_REVERSED);
 887
 888     if (!CurveSeq.IsEmpty())
 889     {
 890       Standard_Integer nb_curve = CurveSeq.Length();   //number of curves
 891       TColGeom_Array1OfBSplineCurve tab(0,nb_curve-1);                    //array of the curves
 892       TColStd_Array1OfReal tabtolvertex(0,nb_curve-1); //(0,nb_curve-2);  //array of the tolerances
 893
 894       Standard_Integer i;
 895
 896       if (nb_curve > 1)
 897       {
 898         for (i = 1; i <= nb_curve; i++)
 899         {
 900           if (CurveSeq(i)->IsInstance(STANDARD_TYPE(Geom_TrimmedCurve)))
 901             CurveSeq(i) = (*((Handle(Geom_TrimmedCurve)*)&(CurveSeq(i))))->BasisCurve();
 902
 903           Handle(Geom_TrimmedCurve) aTrCurve = new Geom_TrimmedCurve(CurveSeq(i), FparSeq(i), LparSeq(i));
 904           tab(i-1) = GeomConvert::CurveToBSplineCurve(aTrCurve);
 905           tab(i-1)->Transform(LocSeq(i).Location().Transformation());
 906           GeomConvert::C0BSplineToC1BSplineCurve(tab(i-1), Precision::Confusion());
 907           if (LocSeq(i).Orientation() == TopAbs_REVERSED)
 908             tab(i-1)->Reverse();
 909
 910           //Temporary
 911           //char* name = new char[100];
 912           //sprintf(name, "c%d", i);
 913           //DrawTrSurf::Set(name, tab(i-1));
 914
 915           if (i > 1)
 916             tabtolvertex(i-2) = TolSeq(i-1);
 917         } // end for (i = 1; i <= nb_curve; i++)
 918         tabtolvertex(nb_curve-1) = TolSeq(TolSeq.Length());
 919
 920         Standard_Boolean closed_flag = Standard_False;
 921         Standard_Real closed_tolerance = 0.;
 922         if (FirstVertex.IsSame(LastVertex) &&
 923             GeomLProp::Continuity(tab(0), tab(nb_curve-1),
 924                                   tab(0)->FirstParameter(),
 925                                   tab(nb_curve-1)->LastParameter(),
 926                                   Standard_False, Standard_False, LinTol, AngTol) >= GeomAbs_G1)
 927         {
 928           closed_flag = Standard_True ;
 929           closed_tolerance = BRep_Tool::Tolerance(FirstVertex);
 930         }
 931
 932         Handle(TColGeom_HArray1OfBSplineCurve)  concatcurve;     //array of the concatenated curves
 933         Handle(TColStd_HArray1OfInteger)        ArrayOfIndices;  //array of the remining Vertex
 934         GeomConvert::ConcatC1(tab,
 935                               tabtolvertex,
 936                               ArrayOfIndices,
 937                               concatcurve,
 938                               closed_flag,
 939                               closed_tolerance);   //C1 concatenation
 940
 941         if (concatcurve->Length() > 1)
 942         {
 943           GeomConvert_CompCurveToBSplineCurve Concat(concatcurve->Value(concatcurve->Lower()));
 944
 945           for (i = concatcurve->Lower()+1; i <= concatcurve->Upper(); i++)
 946             Concat.Add( concatcurve->Value(i), LinTol, Standard_True );
 947
 948           concatcurve->SetValue(concatcurve->Lower(), Concat.BSplineCurve());
 949         }
 950         // rnc : prevents the driver from building an edge without C1 continuity
 951         if (concatcurve->Value(concatcurve->Lower())->Continuity()==GeomAbs_C0){
 952           Standard_ConstructionError::Raise("Construction aborted : The given Wire has sharp bends between some Edges, no valid Edge can be built");
 953         }
 954         ResEdge = BRepLib_MakeEdge(concatcurve->Value(concatcurve->Lower()),
 955                                    FirstVtx_final, LastVtx_final,
 956                                    concatcurve->Value(concatcurve->Lower())->FirstParameter(),
 957                                    concatcurve->Value(concatcurve->Lower())->LastParameter());
 958       }
 959       else
 960       {
 961         if (CurveSeq(1)->IsInstance(STANDARD_TYPE(Geom_TrimmedCurve)))
 962           CurveSeq(1) = (*((Handle(Geom_TrimmedCurve)*)&(CurveSeq(1))))->BasisCurve();
 963
 964         CurveSeq(1)->Transform(LocSeq(1).Location().Transformation());
 965         ResEdge = BRepLib_MakeEdge(CurveSeq(1),
 966                                    FirstVtx_final, LastVtx_final,
 967                                    FparSeq(1), LparSeq(1));
 968       }
 969     }
 970
 971     if (FinalReverse)
 972       ResEdge.Reverse();
 973
 974     return ResEdge;
 975 }
 976
 977 //=======================================================================
 978 //function :  GEOMImpl_ShapeDriver_Type_
 979 //purpose  :
 980 //=======================================================================
 981 Standard_EXPORT Handle_Standard_Type& GEOMImpl_ShapeDriver_Type_()
 982 {
 983
 984   static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
 985   if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
 986   static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
 987   if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
 988   static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
 989   if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);
 990
 991
 992   static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
 993   static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_ShapeDriver",
 994                                                          sizeof(GEOMImpl_ShapeDriver),
 995                                                          1,
 996                                                          (Standard_Address)_Ancestors,
 997                                                          (Standard_Address)NULL);
 998
 999   return _aType;
1000 }
1001
1002 //=======================================================================
1003 //function : DownCast
1004 //purpose  :
1005 //=======================================================================
1006 const Handle(GEOMImpl_ShapeDriver) Handle(GEOMImpl_ShapeDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
1007 {
1008   Handle(GEOMImpl_ShapeDriver) _anOtherObject;
1009
1010   if (!AnObject.IsNull()) {
1011      if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_ShapeDriver))) {
1012        _anOtherObject = Handle(GEOMImpl_ShapeDriver)((Handle(GEOMImpl_ShapeDriver)&)AnObject);
1013      }
1014   }
1015
1016   return _anOtherObject;
1017 }
1018
1019 //modified by NIZNHY-PKV Wed Dec 28 13:48:31 2011f
1020 #include <TopoDS_Iterator.hxx>
1021 #include <TopTools_HSequenceOfShape.hxx>
1022 #include <ShapeAnalysis_FreeBounds.hxx>
1023 #include <TopTools_MapOfShape.hxx>
1024 #include <TopTools_MapOfOrientedShape.hxx>
1025 #include <BRep_Builder.hxx>
1026 #include <TopoDS_Wire.hxx>
1027
1028 //=======================================================================
1029 //function : KeepEdgesOrder
1030 //purpose  :
1031 //=======================================================================
1032 /*
1033 void KeepEdgesOrder(const Handle(TopTools_HSequenceOfShape)& aEdges,
1034                     const Handle(TopTools_HSequenceOfShape)& aWires)
1035 {
1036   Standard_Integer aNbWires, aNbEdges;
1037   //
1038   if (aEdges.IsNull()) {
1039     return;
1040   }
1041   //
1042   if (aWires.IsNull()) {
1043     return;
1044   }
1045   //
1046   aNbEdges=aEdges->Length();
1047   aNbWires=aWires->Length();
1048   if (!aNbEdges || !aNbWires) {
1049     return;
1050   }
1051   //-----
1052   Standard_Boolean bClosed;
1053   Standard_Integer i, j;
1054   TopoDS_Wire aWy;
1055   TopoDS_Iterator aIt;
1056   BRep_Builder aBB;
1057   TopTools_MapOfOrientedShape aMEx;
1058   //
1059   for (i=1; i<=aNbWires; ++i) {
1060     const TopoDS_Shape& aWx=aWires->Value(i);
1061     //
1062     aMEx.Clear();
1063     aIt.Initialize (aWx);
1064     for (; aIt.More(); aIt.Next()) {
1065       const TopoDS_Shape& aEx=aIt.Value();
1066       aMEx.Add(aEx);
1067     }
1068     // aWy
1069     aBB.MakeWire (aWy);
1070     for (j=1; j<=aNbEdges; ++j) {
1071       const TopoDS_Shape& aE=aEdges->Value(j);
1072       if (aMEx.Contains(aE)) {
1073         aBB.Add(aWy, aE);
1074       }
1075     }
1076     //
1077     bClosed=aWx.Closed();
1078     aWy.Closed(bClosed);
1079     //
1080     aWires->Append(aWy);
1081   }// for (i=1; i<=aNbWires; ++i) {
1082   //
1083   aWires->Remove(1, aNbWires);
1084 }
1085 */
1086 //modified by NIZNHY-PKV Wed Dec 28 13:48:34 2011t