src/GEOMImpl/GEOMImpl_ShapeDriver.cxx

   1 // Copyright (C) 2007-2012  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 #include <GEOMImpl_ShapeDriver.hxx>
  23
  24 #include <GEOMImpl_IShapes.hxx>
  25 #include <GEOMImpl_IVector.hxx>
  26 #include <GEOMImpl_Types.hxx>
  27 #include <GEOMImpl_Block6Explorer.hxx>
  28
  29 #include <GEOM_Function.hxx>
  30
  31 // OCCT Includes
  32 #include <ShapeFix_Wire.hxx>
  33 #include <ShapeFix_Edge.hxx>
  34 #include <ShapeFix_Shape.hxx>
  35
  36 #include <BRep_Builder.hxx>
  37 #include <BRep_Tool.hxx>
  38 #include <BRepAdaptor_Curve.hxx>
  39 #include <BRepAlgo_FaceRestrictor.hxx>
  40 #include <BRepBuilderAPI_Copy.hxx>
  41 #include <BRepBuilderAPI_Sewing.hxx>
  42 #include <BRepBuilderAPI_MakeWire.hxx>
  43 #include <BRepBuilderAPI_MakeEdge.hxx>
  44 #include <BRepCheck.hxx>
  45 #include <BRepCheck_Analyzer.hxx>
  46 #include <BRepCheck_Shell.hxx>
  47 #include <BRepClass3d_SolidClassifier.hxx>
  48 #include <BRepLib.hxx>
  49 #include <BRepLib_MakeEdge.hxx>
  50 #include <BRepTools_WireExplorer.hxx>
  51
  52 #include <ShapeAnalysis_FreeBounds.hxx>
  53
  54 #include <TopAbs.hxx>
  55 #include <TopExp.hxx>
  56 #include <TopExp_Explorer.hxx>
  57 #include <TopoDS.hxx>
  58 #include <TopoDS_Shape.hxx>
  59 #include <TopoDS_Edge.hxx>
  60 #include <TopoDS_Wire.hxx>
  61 #include <TopoDS_Shell.hxx>
  62 #include <TopoDS_Solid.hxx>
  63 #include <TopoDS_Compound.hxx>
  64 #include <TopoDS_Iterator.hxx>
  65
  66 #include <TopTools_MapOfShape.hxx>
  67 #include <TopTools_HSequenceOfShape.hxx>
  68
  69 #include <ElCLib.hxx>
  70
  71 #include <GCPnts_AbscissaPoint.hxx>
  72
  73 #include <Geom_TrimmedCurve.hxx>
  74 #include <GeomAbs_CurveType.hxx>
  75 #include <GeomConvert_CompCurveToBSplineCurve.hxx>
  76 #include <GeomConvert.hxx>
  77 #include <GeomLProp.hxx>
  78
  79 #include <TColStd_SequenceOfReal.hxx>
  80 #include <TColStd_HSequenceOfTransient.hxx>
  81 #include <TColStd_Array1OfReal.hxx>
  82 #include <TColGeom_SequenceOfCurve.hxx>
  83 #include <TColGeom_Array1OfBSplineCurve.hxx>
  84 #include <TColGeom_HArray1OfBSplineCurve.hxx>
  85
  86 #include <Precision.hxx>
  87
  88 #include <Standard_NullObject.hxx>
  89 #include <Standard_TypeMismatch.hxx>
  90 #include <Standard_ConstructionError.hxx>
  91
  92 //modified by NIZNHY-PKV Wed Dec 28 13:48:20 2011f
  93 //static
  94 //  void KeepEdgesOrder(const Handle(TopTools_HSequenceOfShape)& aEdges,
  95 //                    const Handle(TopTools_HSequenceOfShape)& aWires);
  96 //modified by NIZNHY-PKV Wed Dec 28 13:48:23 2011t
  97
  98 //=======================================================================
  99 //function : GetID
 100 //purpose  :
 101 //=======================================================================
 102 const Standard_GUID& GEOMImpl_ShapeDriver::GetID()
 103 {
 104   static Standard_GUID aShapeDriver("FF1BBB54-5D14-4df2-980B-3A668264EA16");
 105   return aShapeDriver;
 106 }
 107
 108
 109 //=======================================================================
 110 //function : GEOMImpl_ShapeDriver
 111 //purpose  :
 112 //=======================================================================
 113 GEOMImpl_ShapeDriver::GEOMImpl_ShapeDriver()
 114 {
 115 }
 116
 117 //=======================================================================
 118 //function : Execute
 119 //purpose  :
 120 //=======================================================================
 121 Standard_Integer GEOMImpl_ShapeDriver::Execute(TFunction_Logbook& log) const
 122 {
 123   if (Label().IsNull()) return 0;
 124   Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
 125
 126   GEOMImpl_IShapes aCI (aFunction);
 127   Standard_Integer aType = aFunction->GetType();
 128
 129   TopoDS_Shape aShape;
 130   TCollection_AsciiString aWarning;
 131
 132   BRep_Builder B;
 133
 134   if (aType == WIRE_EDGES) {
 135     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 136
 137     Standard_Real aTolerance = aCI.GetTolerance();
 138     if (aTolerance < Precision::Confusion())
 139       aTolerance = Precision::Confusion();
 140
 141     aShape = MakeWireFromEdges(aShapes, aTolerance);
 142   }
 143   else if (aType == FACE_WIRE) {
 144     Handle(GEOM_Function) aRefBase = aCI.GetBase();
 145     TopoDS_Shape aShapeBase = aRefBase->GetValue();
 146     if (aShapeBase.IsNull()) Standard_NullObject::Raise("Argument Shape is null");
 147     TopoDS_Wire W;
 148     if (aShapeBase.ShapeType() == TopAbs_WIRE) {
 149       W = TopoDS::Wire(aShapeBase);
 150       // check the wire is closed
 151       TopoDS_Vertex aV1, aV2;
 152       TopExp::Vertices(W, aV1, aV2);
 153       if ( !aV1.IsNull() && !aV2.IsNull() && aV1.IsSame(aV2) )
 154         aShapeBase.Closed(true);
 155       else
 156         Standard_NullObject::Raise
 157           ("Shape for face construction is not closed");
 158     }
 159     else if (aShapeBase.ShapeType() == TopAbs_EDGE && aShapeBase.Closed()) {
 160       BRepBuilderAPI_MakeWire MW;
 161       MW.Add(TopoDS::Edge(aShapeBase));
 162       if (!MW.IsDone()) {
 163         Standard_ConstructionError::Raise("Wire construction failed");
 164       }
 165       W = MW;
 166     }
 167     else {
 168       Standard_NullObject::Raise
 169         ("Shape for face construction is neither a wire nor a closed edge");
 170     }
 171     aWarning = GEOMImpl_Block6Explorer::MakeFace(W, aCI.GetIsPlanar(), aShape);
 172     if (aShape.IsNull()) {
 173       Standard_ConstructionError::Raise("Face construction failed");
 174     }
 175   }
 176   else if (aType == FACE_WIRES) {
 177     // Try to build a face from a set of wires and edges
 178     int ind;
 179
 180     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 181     int nbshapes = aShapes->Length();
 182     if (nbshapes < 1) {
 183       Standard_ConstructionError::Raise("No wires or edges given");
 184     }
 185
 186     // 1. Extract all edges from the given arguments
 187     TopTools_MapOfShape aMapEdges;
 188     Handle(TopTools_HSequenceOfShape) aSeqEdgesIn = new TopTools_HSequenceOfShape;
 189
 190     for (ind = 1; ind <= nbshapes; ind++) {
 191       Handle(GEOM_Function) aRefSh_i = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 192       TopoDS_Shape aSh_i = aRefSh_i->GetValue();
 193
 194       TopExp_Explorer anExpE_i (aSh_i, TopAbs_EDGE);
 195       for (; anExpE_i.More(); anExpE_i.Next()) {
 196         if (aMapEdges.Add(anExpE_i.Current())) {
 197           aSeqEdgesIn->Append(anExpE_i.Current());
 198         }
 199       }
 200     }
 201
 202     // 2. Connect edges to wires of maximum length
 203     Handle(TopTools_HSequenceOfShape) aSeqWiresOut;
 204     ShapeAnalysis_FreeBounds::ConnectEdgesToWires(aSeqEdgesIn, Precision::Confusion(),
 205                                                   /*shared*/Standard_False, aSeqWiresOut);
 206     //modified by NIZNHY-PKV Wed Dec 28 13:46:55 2011f
 207     //KeepEdgesOrder(aSeqEdgesIn, aSeqWiresOut);
 208     //modified by NIZNHY-PKV Wed Dec 28 13:46:59 2011t
 209
 210     // 3. Separate closed wires
 211     Handle(TopTools_HSequenceOfShape) aSeqClosedWires = new TopTools_HSequenceOfShape;
 212     Handle(TopTools_HSequenceOfShape) aSeqOpenWires = new TopTools_HSequenceOfShape;
 213     for (ind = 1; ind <= aSeqWiresOut->Length(); ind++) {
 214       if (aSeqWiresOut->Value(ind).Closed())
 215         aSeqClosedWires->Append(aSeqWiresOut->Value(ind));
 216       else
 217         aSeqOpenWires->Append(aSeqWiresOut->Value(ind));
 218     }
 219
 220     if (aSeqClosedWires->Length() < 1) {
 221       Standard_ConstructionError::Raise
 222         ("There is no closed contour can be built from the given arguments");
 223     }
 224
 225     // 4. Build a face / list of faces from all the obtained closed wires
 226
 227     // 4.a. Basic face
 228     TopoDS_Shape aFFace;
 229     TopoDS_Wire aW1 = TopoDS::Wire(aSeqClosedWires->Value(1));
 230     aWarning = GEOMImpl_Block6Explorer::MakeFace(aW1, aCI.GetIsPlanar(), aFFace);
 231     if (aFFace.IsNull()) {
 232       Standard_ConstructionError::Raise("Face construction failed");
 233     }
 234
 235     // 4.b. Add other wires
 236     if (aSeqClosedWires->Length() == 1) {
 237       aShape = aFFace;
 238     }
 239     else {
 240       TopoDS_Compound C;
 241       BRep_Builder aBuilder;
 242       aBuilder.MakeCompound(C);
 243       BRepAlgo_FaceRestrictor FR;
 244
 245       TopAbs_Orientation OriF = aFFace.Orientation();
 246       TopoDS_Shape aLocalS = aFFace.Oriented(TopAbs_FORWARD);
 247       FR.Init(TopoDS::Face(aLocalS), Standard_False, Standard_True);
 248
 249       for (ind = 1; ind <= aSeqClosedWires->Length(); ind++) {
 250         TopoDS_Wire aW = TopoDS::Wire(aSeqClosedWires->Value(ind));
 251         FR.Add(aW);
 252       }
 253
 254       FR.Perform();
 255
 256       if (FR.IsDone()) {
 257         int k = 0;
 258         TopoDS_Shape aFace;
 259         for (; FR.More(); FR.Next()) {
 260           aFace = FR.Current().Oriented(OriF);
 261           aBuilder.Add(C, aFace);
 262           k++;
 263         }
 264         if (k == 1) {
 265           aShape = aFace;
 266         } else {
 267           aShape = C;
 268         }
 269       }
 270     }
 271
 272     // 5. Add all open wires to the result
 273     if (aSeqOpenWires->Length() > 0) {
 274       //Standard_ConstructionError::Raise("There are some open wires");
 275       TopoDS_Compound C;
 276       BRep_Builder aBuilder;
 277       if (aSeqClosedWires->Length() == 1) {
 278         aBuilder.MakeCompound(C);
 279         aBuilder.Add(C, aShape);
 280       }
 281       else {
 282         C = TopoDS::Compound(aShape);
 283       }
 284
 285       for (ind = 1; ind <= aSeqOpenWires->Length(); ind++) {
 286         aBuilder.Add(C, aSeqOpenWires->Value(ind));
 287       }
 288
 289       aShape = C;
 290     }
 291   }
 292   else if (aType == SHELL_FACES) {
 293     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 294     unsigned int ind, nbshapes = aShapes->Length();
 295
 296     // add faces
 297     BRepBuilderAPI_Sewing aSewing (Precision::Confusion()*10.0);
 298     for (ind = 1; ind <= nbshapes; ind++) {
 299       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 300       TopoDS_Shape aShape_i = aRefShape->GetValue();
 301       if (aShape_i.IsNull()) {
 302         Standard_NullObject::Raise("Face for shell construction is null");
 303       }
 304       aSewing.Add(aShape_i);
 305     }
 306
 307     aSewing.Perform();
 308
 309     TopoDS_Shape sh = aSewing.SewedShape();
 310
 311     if (sh.ShapeType()==TopAbs_FACE && nbshapes==1) {
 312       // case for creation of shell from one face - PAL12722 (skl 26.06.2006)
 313       TopoDS_Shell ss;
 314       B.MakeShell(ss);
 315       B.Add(ss,sh);
 316       aShape = ss;
 317     }
 318     else {
 319       //TopExp_Explorer exp (aSewing.SewedShape(), TopAbs_SHELL);
 320       TopExp_Explorer exp (sh, TopAbs_SHELL);
 321       Standard_Integer ish = 0;
 322       for (; exp.More(); exp.Next()) {
 323         aShape = exp.Current();
 324         ish++;
 325       }
 326
 327       if (ish != 1) {
 328         // try the case of one face (Mantis issue 0021809)
 329         TopExp_Explorer expF (sh, TopAbs_FACE);
 330         Standard_Integer ifa = 0;
 331         for (; expF.More(); expF.Next()) {
 332           aShape = expF.Current();
 333           ifa++;
 334         }
 335
 336         if (ifa == 1) {
 337           TopoDS_Shell ss;
 338           B.MakeShell(ss);
 339           B.Add(ss,aShape);
 340           aShape = ss;
 341         }
 342         else {
 343           aShape = aSewing.SewedShape();
 344         }
 345       }
 346     }
 347
 348   }
 349   else if (aType == SOLID_SHELL) {
 350     Handle(GEOM_Function) aRefShell = aCI.GetBase();
 351     TopoDS_Shape aShapeShell = aRefShell->GetValue();
 352     if (!aShapeShell.IsNull() && aShapeShell.ShapeType() == TopAbs_COMPOUND) {
 353       TopoDS_Iterator It (aShapeShell, Standard_True, Standard_True);
 354       if (It.More()) aShapeShell = It.Value();
 355     }
 356     if (aShapeShell.IsNull() || aShapeShell.ShapeType() != TopAbs_SHELL) {
 357       Standard_NullObject::Raise("Shape for solid construction is null or not a shell");
 358     }
 359
 360     BRepCheck_Shell chkShell(TopoDS::Shell(aShapeShell));
 361     if (chkShell.Closed() == BRepCheck_NotClosed) return 0;
 362
 363     TopoDS_Solid Sol;
 364     B.MakeSolid(Sol);
 365     B.Add(Sol, aShapeShell);
 366     BRepClass3d_SolidClassifier SC (Sol);
 367     SC.PerformInfinitePoint(Precision::Confusion());
 368     if (SC.State() == TopAbs_IN) {
 369       B.MakeSolid(Sol);
 370       B.Add(Sol, aShapeShell.Reversed());
 371     }
 372
 373     aShape = Sol;
 374
 375   }
 376   else if (aType == SOLID_SHELLS) {
 377     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 378     unsigned int ind, nbshapes = aShapes->Length();
 379     Standard_Integer ish = 0;
 380     TopoDS_Solid Sol;
 381     B.MakeSolid(Sol);
 382
 383     // add shapes
 384     for (ind = 1; ind <= nbshapes; ind++) {
 385       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 386       TopoDS_Shape aShapeShell = aRefShape->GetValue();
 387       if (aShapeShell.IsNull()) {
 388         Standard_NullObject::Raise("Shell for solid construction is null");
 389       }
 390       if (aShapeShell.ShapeType() == TopAbs_COMPOUND) {
 391         TopoDS_Iterator It (aShapeShell, Standard_True, Standard_True);
 392         if (It.More()) aShapeShell = It.Value();
 393       }
 394       if (aShapeShell.ShapeType() == TopAbs_SHELL) {
 395         B.Add(Sol, aShapeShell);
 396         ish++;
 397       }
 398     }
 399     if (ish == 0) return 0;
 400     BRepClass3d_SolidClassifier SC (Sol);
 401     SC.PerformInfinitePoint(Precision::Confusion());
 402     if (SC.State() == TopAbs_IN)
 403       aShape = Sol.Reversed();
 404     else
 405       aShape = Sol;
 406   }
 407   else if (aType == COMPOUND_SHAPES) {
 408     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 409     unsigned int ind, nbshapes = aShapes->Length();
 410
 411     // add shapes
 412     TopoDS_Compound C;
 413     B.MakeCompound(C);
 414     for (ind = 1; ind <= nbshapes; ind++) {
 415       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 416       TopoDS_Shape aShape_i = aRefShape->GetValue();
 417       if (aShape_i.IsNull()) {
 418         Standard_NullObject::Raise("Shape for compound construction is null");
 419       }
 420       B.Add(C, aShape_i);
 421     }
 422
 423     aShape = C;
 424
 425   }
 426   /*
 427   else if (aType == REVERSE_ORIENTATION) {
 428     Handle(GEOM_Function) aRefShape = aCI.GetBase();
 429     TopoDS_Shape aShape_i = aRefShape->GetValue();
 430     if (aShape_i.IsNull()) {
 431        Standard_NullObject::Raise("Shape for reverse is null");
 432     }
 433
 434     BRepBuilderAPI_Copy Copy(aShape_i);
 435     if( Copy.IsDone() ) {
 436       TopoDS_Shape tds = Copy.Shape();
 437       if( tds.IsNull() ) {
 438         Standard_ConstructionError::Raise("Orientation aborted : Can not reverse the shape");
 439       }
 440
 441       if( tds.Orientation() == TopAbs_FORWARD)
 442         tds.Orientation(TopAbs_REVERSED);
 443       else
 444         tds.Orientation(TopAbs_FORWARD);
 445
 446       aShape = tds;
 447     }
 448   }
 449   */
 450   else if (aType == EDGE_WIRE) {
 451     Handle(GEOM_Function) aRefBase = aCI.GetBase();
 452     TopoDS_Shape aWire = aRefBase->GetValue();
 453     Standard_Real LinTol = aCI.GetTolerance();
 454     Standard_Real AngTol = aCI.GetAngularTolerance();
 455     if (aWire.IsNull()) Standard_NullObject::Raise("Argument Wire is null");
 456
 457     aShape = MakeEdgeFromWire(aWire, LinTol, AngTol);
 458   }
 459   else if (aType == EDGE_CURVE_LENGTH) {
 460     GEOMImpl_IVector aVI (aFunction);
 461
 462     // RefCurve
 463     Handle(GEOM_Function) aRefCurve = aVI.GetPoint1();
 464     if (aRefCurve.IsNull()) Standard_NullObject::Raise("Argument Curve is null");
 465     TopoDS_Shape aRefShape1 = aRefCurve->GetValue();
 466     if (aRefShape1.ShapeType() != TopAbs_EDGE) {
 467       Standard_TypeMismatch::Raise
 468         ("Edge On Curve creation aborted : curve shape is not an edge");
 469     }
 470     TopoDS_Edge aRefEdge = TopoDS::Edge(aRefShape1);
 471     TopoDS_Vertex V1, V2;
 472     TopExp::Vertices(aRefEdge, V1, V2, Standard_True);
 473
 474     // RefPoint
 475     TopoDS_Vertex aRefVertex;
 476     Handle(GEOM_Function) aRefPoint = aVI.GetPoint2();
 477     if (aRefPoint.IsNull()) {
 478       aRefVertex = V1;
 479     }
 480     else {
 481       TopoDS_Shape aRefShape2 = aRefPoint->GetValue();
 482       if (aRefShape2.ShapeType() != TopAbs_VERTEX) {
 483         Standard_TypeMismatch::Raise
 484           ("Edge On Curve creation aborted : start point shape is not a vertex");
 485       }
 486       aRefVertex = TopoDS::Vertex(aRefShape2);
 487     }
 488     gp_Pnt aRefPnt = BRep_Tool::Pnt(aRefVertex);
 489
 490     // Length
 491     Standard_Real aLength = aVI.GetParameter();
 492     //Standard_Real aCurveLength = IntTools::Length(aRefEdge);
 493     //if (aLength > aCurveLength) {
 494     //  Standard_ConstructionError::Raise
 495     //    ("Edge On Curve creation aborted : given length is greater than edges length");
 496     //}
 497     if (fabs(aLength) < Precision::Confusion()) {
 498       Standard_ConstructionError::Raise
 499         ("Edge On Curve creation aborted : given length is smaller than Precision::Confusion()");
 500     }
 501
 502     // Check orientation
 503     Standard_Real UFirst, ULast;
 504     Handle(Geom_Curve) EdgeCurve = BRep_Tool::Curve(aRefEdge, UFirst, ULast);
 505     Handle(Geom_Curve) ReOrientedCurve = EdgeCurve;
 506
 507     Standard_Real dU = ULast - UFirst;
 508     Standard_Real par1 = UFirst + 0.1 * dU;
 509     Standard_Real par2 = ULast  - 0.1 * dU;
 510
 511     gp_Pnt P1 = EdgeCurve->Value(par1);
 512     gp_Pnt P2 = EdgeCurve->Value(par2);
 513
 514     if (aRefPnt.SquareDistance(P2) < aRefPnt.SquareDistance(P1)) {
 515       ReOrientedCurve = EdgeCurve->Reversed();
 516       UFirst = EdgeCurve->ReversedParameter(ULast);
 517     }
 518
 519     // Get the point by length
 520     GeomAdaptor_Curve AdapCurve = GeomAdaptor_Curve(ReOrientedCurve);
 521     GCPnts_AbscissaPoint anAbsPnt (AdapCurve, aLength, UFirst);
 522     Standard_Real aParam = anAbsPnt.Parameter();
 523
 524     if (AdapCurve.IsClosed() && aLength < 0.0) {
 525       Standard_Real aTmp = aParam;
 526       aParam = UFirst;
 527       UFirst = aTmp;
 528     }
 529
 530     BRepBuilderAPI_MakeEdge aME (ReOrientedCurve, UFirst, aParam);
 531     if (aME.IsDone())
 532       aShape = aME.Shape();
 533   }
 534   else {
 535   }
 536
 537   if (aShape.IsNull()) return 0;
 538
 539   // Check shape validity
 540   BRepCheck_Analyzer ana (aShape, false);
 541   if (!ana.IsValid()) {
 542     //Standard_ConstructionError::Raise("Algorithm have produced an invalid shape result");
 543     // For Mantis issue 0021772: EDF 2336 GEOM: Non valid face created from two circles
 544     Handle(ShapeFix_Shape) aSfs = new ShapeFix_Shape (aShape);
 545     aSfs->Perform();
 546     aShape = aSfs->Shape();
 547   }
 548
 549   aFunction->SetValue(aShape);
 550
 551   log.SetTouched(Label());
 552
 553   if (!aWarning.IsEmpty())
 554     Standard_Failure::Raise(aWarning.ToCString());
 555
 556   return 1;
 557 }
 558
 559 TopoDS_Wire GEOMImpl_ShapeDriver::MakeWireFromEdges(const Handle(TColStd_HSequenceOfTransient)& theEdgesFuncs,
 560                                                     const Standard_Real theTolerance)
 561 {
 562   BRep_Builder B;
 563
 564   TopoDS_Wire aWire;
 565   B.MakeWire(aWire);
 566
 567   // add edges
 568   for (unsigned int ind = 1; ind <= theEdgesFuncs->Length(); ind++) {
 569     Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(theEdgesFuncs->Value(ind));
 570     TopoDS_Shape aShape_i = aRefShape->GetValue();
 571     if (aShape_i.IsNull()) {
 572       Standard_NullObject::Raise("Shape for wire construction is null");
 573     }
 574     if (aShape_i.ShapeType() == TopAbs_EDGE || aShape_i.ShapeType() == TopAbs_WIRE) {
 575       TopExp_Explorer exp (aShape_i, TopAbs_EDGE);
 576       for (; exp.More(); exp.Next())
 577         B.Add(aWire, TopoDS::Edge(exp.Current()));
 578     } else {
 579       Standard_TypeMismatch::Raise
 580         ("Shape for wire construction is neither an edge nor a wire");
 581     }
 582   }
 583
 584   // fix edges order
 585   Handle(ShapeFix_Wire) aFW = new ShapeFix_Wire;
 586   aFW->Load(aWire);
 587   aFW->FixReorder();
 588
 589   if (aFW->StatusReorder(ShapeExtend_FAIL1)) {
 590     Standard_ConstructionError::Raise("Wire construction failed: several loops detected");
 591   }
 592   else if (aFW->StatusReorder(ShapeExtend_FAIL)) {
 593     Standard_ConstructionError::Raise("Wire construction failed");
 594   }
 595   else {
 596   }
 597
 598   // IMP 0019766: Building a Wire from unconnected edges by introducing a tolerance
 599   aFW->ClosedWireMode() = Standard_False;
 600   aFW->FixConnected(theTolerance);
 601   if (aFW->StatusConnected(ShapeExtend_FAIL)) {
 602     Standard_ConstructionError::Raise("Wire construction failed: cannot build connected wire");
 603   }
 604   // IMP 0019766
 605   if (aFW->StatusConnected(ShapeExtend_DONE3)) {
 606     // Confused with <prec> but not Analyzer.Precision(), set the same
 607     aFW->FixGapsByRangesMode() = Standard_True;
 608     if (aFW->FixGaps3d()) {
 609       Handle(ShapeExtend_WireData) sbwd = aFW->WireData();
 610       Handle(ShapeFix_Edge) aFe = new ShapeFix_Edge;
 611       for (Standard_Integer iedge = 1; iedge <= sbwd->NbEdges(); iedge++) {
 612         TopoDS_Edge aEdge = TopoDS::Edge(sbwd->Edge(iedge));
 613         aFe->FixVertexTolerance(aEdge);
 614         aFe->FixSameParameter(aEdge);
 615       }
 616     }
 617     else if (aFW->StatusGaps3d(ShapeExtend_FAIL)) {
 618       Standard_ConstructionError::Raise("Wire construction failed: cannot fix 3d gaps");
 619     }
 620   }
 621   aWire = aFW->WireAPIMake();
 622
 623   return aWire;
 624 }
 625
 626 TopoDS_Edge GEOMImpl_ShapeDriver::MakeEdgeFromWire(const TopoDS_Shape& aWire,
 627                                                    const Standard_Real LinTol,
 628                                                    const Standard_Real AngTol)
 629 {
 630     TopoDS_Edge ResEdge;
 631
 632     BRepLib::BuildCurves3d(aWire);
 633     Handle(ShapeFix_Shape) Fixer = new ShapeFix_Shape(aWire);
 634     Fixer->SetPrecision(LinTol);
 635     Fixer->SetMaxTolerance(LinTol);
 636     Fixer->Perform();
 637     TopoDS_Wire theWire = TopoDS::Wire(Fixer->Shape());
 638
 639     TColGeom_SequenceOfCurve CurveSeq;
 640     TopTools_SequenceOfShape LocSeq;
 641     TColStd_SequenceOfReal FparSeq;
 642     TColStd_SequenceOfReal LparSeq;
 643     TColStd_SequenceOfReal TolSeq;
 644     GeomAbs_CurveType CurType;
 645     TopoDS_Vertex FirstVertex, LastVertex;
 646     Standard_Boolean FinalReverse = Standard_False;
 647
 648     BRepTools_WireExplorer wexp(theWire) ;
 649     for (; wexp.More(); wexp.Next())
 650     {
 651       TopoDS_Edge anEdge = wexp.Current();
 652       Standard_Real fpar, lpar;
 653       TopLoc_Location aLoc;
 654       Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, aLoc, fpar, lpar);
 655       if (aCurve.IsNull())
 656         continue;
 657
 658       BRepAdaptor_Curve BAcurve(anEdge);
 659       GeomAbs_CurveType aType = BAcurve.GetType();
 660
 661       Handle(Geom_Curve) aBasisCurve = BAcurve.Curve().Curve();
 662
 663       if (aBasisCurve->IsPeriodic())
 664         ElCLib::AdjustPeriodic(aBasisCurve->FirstParameter(), aBasisCurve->LastParameter(),
 665                                Precision::PConfusion(), fpar, lpar);
 666
 667       if (CurveSeq.IsEmpty())
 668       {
 669         CurveSeq.Append(aCurve);
 670         TopoDS_Shape aLocShape;
 671         aLocShape.Location(aLoc);
 672         aLocShape.Orientation(wexp.Orientation());
 673         LocSeq.Append(aLocShape);
 674         FparSeq.Append(fpar);
 675         LparSeq.Append(lpar);
 676         CurType = aType;
 677         FirstVertex = wexp.CurrentVertex();
 678         if (anEdge.Orientation() == TopAbs_REVERSED)
 679           FinalReverse = Standard_True;
 680       }
 681       else
 682       {
 683         Standard_Boolean Done = Standard_False;
 684         Standard_Real NewFpar, NewLpar;
 685         GeomAdaptor_Curve GAprevcurve(CurveSeq.Last());
 686         TopoDS_Vertex CurVertex = wexp.CurrentVertex();
 687         TopoDS_Vertex CurFirstVer = TopExp::FirstVertex(anEdge);
 688         TopAbs_Orientation ConnectByOrigin = (CurVertex.IsSame(CurFirstVer))? TopAbs_FORWARD : TopAbs_REVERSED;
 689         if (aCurve == CurveSeq.Last())
 690         {
 691           NewFpar = fpar;
 692           NewLpar = lpar;
 693           if (aBasisCurve->IsPeriodic())
 694           {
 695             if (NewLpar < NewFpar)
 696               NewLpar += aBasisCurve->Period();
 697             if (ConnectByOrigin == TopAbs_FORWARD)
 698               ElCLib::AdjustPeriodic(FparSeq.Last(),
 699                                      FparSeq.Last() + aBasisCurve->Period(),
 700                                      Precision::PConfusion(), NewFpar, NewLpar);
 701             else
 702               ElCLib::AdjustPeriodic(FparSeq.Last() - aBasisCurve->Period(),
 703                                      FparSeq.Last(),
 704                                      Precision::PConfusion(), NewFpar, NewLpar);
 705           }
 706           Done = Standard_True;
 707         }
 708         else if (aType == CurType &&
 709                  aType != GeomAbs_BezierCurve &&
 710                  aType != GeomAbs_BSplineCurve &&
 711                  aType != GeomAbs_OtherCurve)
 712         {
 713           switch (aType)
 714           {
 715           case GeomAbs_Line:
 716             {
 717               gp_Lin aLine    = BAcurve.Line();
 718               gp_Lin PrevLine = GAprevcurve.Line();
 719               if (aLine.Contains(PrevLine.Location(), LinTol) &&
 720                   aLine.Direction().IsParallel(PrevLine.Direction(), AngTol))
 721               {
 722                 gp_Pnt P1 = ElCLib::Value(fpar, aLine);
 723                 gp_Pnt P2 = ElCLib::Value(lpar, aLine);
 724                 NewFpar = ElCLib::Parameter(PrevLine, P1);
 725                 NewLpar = ElCLib::Parameter(PrevLine, P2);
 726                 if (NewLpar < NewFpar)
 727                 {
 728                   Standard_Real MemNewFpar = NewFpar;
 729                   NewFpar = NewLpar;
 730                   NewLpar = MemNewFpar;
 731                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 732                 }
 733                 Done = Standard_True;
 734               }
 735               break;
 736             }
 737           case GeomAbs_Circle:
 738             {
 739               gp_Circ aCircle    = BAcurve.Circle();
 740               gp_Circ PrevCircle = GAprevcurve.Circle();
 741               if (aCircle.Location().Distance(PrevCircle.Location()) <= LinTol &&
 742                   Abs(aCircle.Radius() - PrevCircle.Radius()) <= LinTol &&
 743                   aCircle.Axis().IsParallel(PrevCircle.Axis(), AngTol))
 744               {
 745                 if (aCircle.Axis().Direction() * PrevCircle.Axis().Direction() < 0.)
 746                 {
 747                   Standard_Real memfpar = fpar;
 748                   fpar = lpar;
 749                   lpar = memfpar;
 750                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 751                 }
 752                 gp_Pnt P1 = ElCLib::Value(fpar, aCircle);
 753                 gp_Pnt P2 = ElCLib::Value(lpar, aCircle);
 754                 NewFpar = ElCLib::Parameter(PrevCircle, P1);
 755                 NewLpar = ElCLib::Parameter(PrevCircle, P2);
 756                 if (NewLpar < NewFpar)
 757                   NewLpar += 2.*M_PI;
 758                 //Standard_Real MemNewFpar = NewFpar, MemNewLpar =  NewLpar;
 759                 if (ConnectByOrigin == TopAbs_FORWARD)
 760                   ElCLib::AdjustPeriodic(FparSeq.Last(),
 761                                          FparSeq.Last() + 2.*M_PI,
 762                                          Precision::PConfusion(), NewFpar, NewLpar);
 763                 else
 764                   ElCLib::AdjustPeriodic(FparSeq.Last() - 2.*M_PI,
 765                                          FparSeq.Last(),
 766                                          Precision::PConfusion(), NewFpar, NewLpar);
 767                 Done = Standard_True;
 768               }
 769               break;
 770             }
 771           case GeomAbs_Ellipse:
 772             {
 773               gp_Elips anEllipse   = BAcurve.Ellipse();
 774               gp_Elips PrevEllipse = GAprevcurve.Ellipse();
 775               if (anEllipse.Focus1().Distance(PrevEllipse.Focus1()) <= LinTol &&
 776                   anEllipse.Focus2().Distance(PrevEllipse.Focus2()) <= LinTol &&
 777                   Abs(anEllipse.MajorRadius() - PrevEllipse.MajorRadius()) <= LinTol &&
 778                   Abs(anEllipse.MinorRadius() - PrevEllipse.MinorRadius()) <= LinTol &&
 779                   anEllipse.Axis().IsParallel(PrevEllipse.Axis(), AngTol))
 780               {
 781                 if (anEllipse.Axis().Direction() * PrevEllipse.Axis().Direction() < 0.)
 782                 {
 783                   Standard_Real memfpar = fpar;
 784                   fpar = lpar;
 785                   lpar = memfpar;
 786                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 787                 }
 788                 gp_Pnt P1 = ElCLib::Value(fpar, anEllipse);
 789                 gp_Pnt P2 = ElCLib::Value(lpar, anEllipse);
 790                 NewFpar = ElCLib::Parameter(PrevEllipse, P1);
 791                 NewLpar = ElCLib::Parameter(PrevEllipse, P2);
 792                 if (NewLpar < NewFpar)
 793                   NewLpar += 2.*M_PI;
 794                 if (ConnectByOrigin == TopAbs_FORWARD)
 795                   ElCLib::AdjustPeriodic(FparSeq.Last(),
 796                                          FparSeq.Last() + 2.*M_PI,
 797                                          Precision::PConfusion(), NewFpar, NewLpar);
 798                 else
 799                   ElCLib::AdjustPeriodic(FparSeq.Last() - 2.*M_PI,
 800                                          FparSeq.Last(),
 801                                          Precision::PConfusion(), NewFpar, NewLpar);
 802                 Done = Standard_True;
 803               }
 804               break;
 805             }
 806           case GeomAbs_Hyperbola:
 807             {
 808               gp_Hypr aHypr    = BAcurve.Hyperbola();
 809               gp_Hypr PrevHypr = GAprevcurve.Hyperbola();
 810               if (aHypr.Focus1().Distance(PrevHypr.Focus1()) <= LinTol &&
 811                   aHypr.Focus2().Distance(PrevHypr.Focus2()) <= LinTol &&
 812                   Abs(aHypr.MajorRadius() - PrevHypr.MajorRadius()) <= LinTol &&
 813                   Abs(aHypr.MinorRadius() - PrevHypr.MinorRadius()) <= LinTol &&
 814                   aHypr.Axis().IsParallel(PrevHypr.Axis(), AngTol))
 815               {
 816                 gp_Pnt P1 = ElCLib::Value(fpar, aHypr);
 817                 gp_Pnt P2 = ElCLib::Value(lpar, aHypr);
 818                 NewFpar = ElCLib::Parameter(PrevHypr, P1);
 819                 NewLpar = ElCLib::Parameter(PrevHypr, P2);
 820                 if (NewLpar < NewFpar)
 821                 {
 822                   Standard_Real MemNewFpar = NewFpar;
 823                   NewFpar = NewLpar;
 824                   NewLpar = MemNewFpar;
 825                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 826                 }
 827                 Done = Standard_True;
 828               }
 829               break;
 830             }
 831           case GeomAbs_Parabola:
 832             {
 833               gp_Parab aParab    = BAcurve.Parabola();
 834               gp_Parab PrevParab = GAprevcurve.Parabola();
 835               if (aParab.Location().Distance(PrevParab.Location()) <= LinTol &&
 836                   aParab.Focus().Distance(PrevParab.Focus()) <= LinTol &&
 837                   Abs(aParab.Focal() - PrevParab.Focal()) <= LinTol &&
 838                   aParab.Axis().IsParallel(PrevParab.Axis(), AngTol))
 839               {
 840                 gp_Pnt P1 = ElCLib::Value(fpar, aParab);
 841                 gp_Pnt P2 = ElCLib::Value(lpar, aParab);
 842                 NewFpar = ElCLib::Parameter(PrevParab, P1);
 843                 NewLpar = ElCLib::Parameter(PrevParab, P2);
 844                 if (NewLpar < NewFpar)
 845                 {
 846                   Standard_Real MemNewFpar = NewFpar;
 847                   NewFpar = NewLpar;
 848                   NewLpar = MemNewFpar;
 849                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 850                 }
 851                 Done = Standard_True;
 852               }
 853               break;
 854             }
 855           } //end of switch (aType)
 856         } // end of else if (aType == CurType && ...
 857         if (Done)
 858         {
 859           if (NewFpar < FparSeq.Last())
 860             FparSeq(FparSeq.Length()) = NewFpar;
 861           else
 862             LparSeq(LparSeq.Length()) = NewLpar;
 863         }
 864         else
 865         {
 866           CurveSeq.Append(aCurve);
 867           TopoDS_Shape aLocShape;
 868           aLocShape.Location(aLoc);
 869           aLocShape.Orientation(wexp.Orientation());
 870           LocSeq.Append(aLocShape);
 871           FparSeq.Append(fpar);
 872           LparSeq.Append(lpar);
 873           TolSeq.Append(BRep_Tool::Tolerance(CurVertex));
 874           CurType = aType;
 875         }
 876       } // end of else (CurveSeq.IsEmpty()) -> not first time
 877     } // end for (; wexp.More(); wexp.Next())
 878
 879     LastVertex = wexp.CurrentVertex();
 880     TolSeq.Append(BRep_Tool::Tolerance(LastVertex));
 881
 882     TopoDS_Vertex FirstVtx_final = (FinalReverse)? LastVertex : FirstVertex;
 883     FirstVtx_final.Orientation(TopAbs_FORWARD);
 884     TopoDS_Vertex LastVtx_final = (FinalReverse)? FirstVertex : LastVertex;
 885     LastVtx_final.Orientation(TopAbs_REVERSED);
 886
 887     if (!CurveSeq.IsEmpty())
 888     {
 889       Standard_Integer nb_curve = CurveSeq.Length();   //number of curves
 890       TColGeom_Array1OfBSplineCurve tab(0,nb_curve-1);                    //array of the curves
 891       TColStd_Array1OfReal tabtolvertex(0,nb_curve-1); //(0,nb_curve-2);  //array of the tolerances
 892
 893       Standard_Integer i;
 894
 895       if (nb_curve > 1)
 896       {
 897         for (i = 1; i <= nb_curve; i++)
 898         {
 899           if (CurveSeq(i)->IsInstance(STANDARD_TYPE(Geom_TrimmedCurve)))
 900             CurveSeq(i) = (*((Handle(Geom_TrimmedCurve)*)&(CurveSeq(i))))->BasisCurve();
 901
 902           Handle(Geom_TrimmedCurve) aTrCurve = new Geom_TrimmedCurve(CurveSeq(i), FparSeq(i), LparSeq(i));
 903           tab(i-1) = GeomConvert::CurveToBSplineCurve(aTrCurve);
 904           tab(i-1)->Transform(LocSeq(i).Location().Transformation());
 905           GeomConvert::C0BSplineToC1BSplineCurve(tab(i-1), Precision::Confusion());
 906           if (LocSeq(i).Orientation() == TopAbs_REVERSED)
 907             tab(i-1)->Reverse();
 908
 909           //Temporary
 910           //char* name = new char[100];
 911           //sprintf(name, "c%d", i);
 912           //DrawTrSurf::Set(name, tab(i-1));
 913
 914           if (i > 1)
 915             tabtolvertex(i-2) = TolSeq(i-1);
 916         } // end for (i = 1; i <= nb_curve; i++)
 917         tabtolvertex(nb_curve-1) = TolSeq(TolSeq.Length());
 918
 919         Standard_Boolean closed_flag = Standard_False;
 920         Standard_Real closed_tolerance = 0.;
 921         if (FirstVertex.IsSame(LastVertex) &&
 922             GeomLProp::Continuity(tab(0), tab(nb_curve-1),
 923                                   tab(0)->FirstParameter(),
 924                                   tab(nb_curve-1)->LastParameter(),
 925                                   Standard_False, Standard_False, LinTol, AngTol) >= GeomAbs_G1)
 926         {
 927           closed_flag = Standard_True ;
 928           closed_tolerance = BRep_Tool::Tolerance(FirstVertex);
 929         }
 930
 931         Handle(TColGeom_HArray1OfBSplineCurve)  concatcurve;     //array of the concatenated curves
 932         Handle(TColStd_HArray1OfInteger)        ArrayOfIndices;  //array of the remining Vertex
 933         GeomConvert::ConcatC1(tab,
 934                               tabtolvertex,
 935                               ArrayOfIndices,
 936                               concatcurve,
 937                               closed_flag,
 938                               closed_tolerance);   //C1 concatenation
 939
 940         if (concatcurve->Length() > 1)
 941         {
 942           GeomConvert_CompCurveToBSplineCurve Concat(concatcurve->Value(concatcurve->Lower()));
 943
 944           for (i = concatcurve->Lower()+1; i <= concatcurve->Upper(); i++)
 945             Concat.Add( concatcurve->Value(i), LinTol, Standard_True );
 946
 947           concatcurve->SetValue(concatcurve->Lower(), Concat.BSplineCurve());
 948         }
 949         // rnc : prevents the driver from building an edge without C1 continuity
 950         if (concatcurve->Value(concatcurve->Lower())->Continuity()==GeomAbs_C0){
 951           Standard_ConstructionError::Raise("Construction aborted : The given Wire has sharp bends between some Edges, no valid Edge can be built");
 952         }
 953         ResEdge = BRepLib_MakeEdge(concatcurve->Value(concatcurve->Lower()),
 954                                    FirstVtx_final, LastVtx_final,
 955                                    concatcurve->Value(concatcurve->Lower())->FirstParameter(),
 956                                    concatcurve->Value(concatcurve->Lower())->LastParameter());
 957       }
 958       else
 959       {
 960         if (CurveSeq(1)->IsInstance(STANDARD_TYPE(Geom_TrimmedCurve)))
 961           CurveSeq(1) = (*((Handle(Geom_TrimmedCurve)*)&(CurveSeq(1))))->BasisCurve();
 962
 963         CurveSeq(1)->Transform(LocSeq(1).Location().Transformation());
 964         ResEdge = BRepLib_MakeEdge(CurveSeq(1),
 965                                    FirstVtx_final, LastVtx_final,
 966                                    FparSeq(1), LparSeq(1));
 967       }
 968     }
 969
 970     if (FinalReverse)
 971       ResEdge.Reverse();
 972
 973     return ResEdge;
 974 }
 975
 976 //=======================================================================
 977 //function :  GEOMImpl_ShapeDriver_Type_
 978 //purpose  :
 979 //=======================================================================
 980 Standard_EXPORT Handle_Standard_Type& GEOMImpl_ShapeDriver_Type_()
 981 {
 982
 983   static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
 984   if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
 985   static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
 986   if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
 987   static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
 988   if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);
 989
 990
 991   static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
 992   static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_ShapeDriver",
 993                                                          sizeof(GEOMImpl_ShapeDriver),
 994                                                          1,
 995                                                          (Standard_Address)_Ancestors,
 996                                                          (Standard_Address)NULL);
 997
 998   return _aType;
 999 }
1000
1001 //=======================================================================
1002 //function : DownCast
1003 //purpose  :
1004 //=======================================================================
1005 const Handle(GEOMImpl_ShapeDriver) Handle(GEOMImpl_ShapeDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
1006 {
1007   Handle(GEOMImpl_ShapeDriver) _anOtherObject;
1008
1009   if (!AnObject.IsNull()) {
1010      if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_ShapeDriver))) {
1011        _anOtherObject = Handle(GEOMImpl_ShapeDriver)((Handle(GEOMImpl_ShapeDriver)&)AnObject);
1012      }
1013   }
1014
1015   return _anOtherObject;
1016 }
1017
1018 //modified by NIZNHY-PKV Wed Dec 28 13:48:31 2011f
1019 #include <TopoDS_Iterator.hxx>
1020 #include <TopTools_HSequenceOfShape.hxx>
1021 #include <ShapeAnalysis_FreeBounds.hxx>
1022 #include <TopTools_MapOfShape.hxx>
1023 #include <TopTools_MapOfOrientedShape.hxx>
1024 #include <BRep_Builder.hxx>
1025 #include <TopoDS_Wire.hxx>
1026
1027 //=======================================================================
1028 //function : KeepEdgesOrder
1029 //purpose  :
1030 //=======================================================================
1031 /*
1032 void KeepEdgesOrder(const Handle(TopTools_HSequenceOfShape)& aEdges,
1033                     const Handle(TopTools_HSequenceOfShape)& aWires)
1034 {
1035   Standard_Integer aNbWires, aNbEdges;
1036   //
1037   if (aEdges.IsNull()) {
1038     return;
1039   }
1040   //
1041   if (aWires.IsNull()) {
1042     return;
1043   }
1044   //
1045   aNbEdges=aEdges->Length();
1046   aNbWires=aWires->Length();
1047   if (!aNbEdges || !aNbWires) {
1048     return;
1049   }
1050   //-----
1051   Standard_Boolean bClosed;
1052   Standard_Integer i, j;
1053   TopoDS_Wire aWy;
1054   TopoDS_Iterator aIt;
1055   BRep_Builder aBB;
1056   TopTools_MapOfOrientedShape aMEx;
1057   //
1058   for (i=1; i<=aNbWires; ++i) {
1059     const TopoDS_Shape& aWx=aWires->Value(i);
1060     //
1061     aMEx.Clear();
1062     aIt.Initialize (aWx);
1063     for (; aIt.More(); aIt.Next()) {
1064       const TopoDS_Shape& aEx=aIt.Value();
1065       aMEx.Add(aEx);
1066     }
1067     // aWy
1068     aBB.MakeWire (aWy);
1069     for (j=1; j<=aNbEdges; ++j) {
1070       const TopoDS_Shape& aE=aEdges->Value(j);
1071       if (aMEx.Contains(aE)) {
1072         aBB.Add(aWy, aE);
1073       }
1074     }
1075     //
1076     bClosed=aWx.Closed();
1077     aWy.Closed(bClosed);
1078     //
1079     aWires->Append(aWy);
1080   }// for (i=1; i<=aNbWires; ++i) {
1081   //
1082   aWires->Remove(1, aNbWires);
1083 }
1084 */
1085 //modified by NIZNHY-PKV Wed Dec 28 13:48:34 2011t