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