src/GEOMImpl/GEOMImpl_ShapeDriver.cxx

   1 //  Copyright (C) 2007-2010  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_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_Tool.hxx>
  37 #include <BRep_Builder.hxx>
  38 #include <BRepAlgo_FaceRestrictor.hxx>
  39 #include <BRepBuilderAPI_Sewing.hxx>
  40 #include <BRepBuilderAPI_Copy.hxx>
  41 #include <BRepCheck.hxx>
  42 #include <BRepCheck_Analyzer.hxx>
  43 #include <BRepCheck_Shell.hxx>
  44 #include <BRepClass3d_SolidClassifier.hxx>
  45 #include <BRepBuilderAPI_MakeWire.hxx>
  46 #include <BRepBuilderAPI_Sewing.hxx>
  47 #include <BRepLib.hxx>
  48 #include <BRepLib_MakeEdge.hxx>
  49 #include <BRepTools_WireExplorer.hxx>
  50 #include <BRepAdaptor_Curve.hxx>
  51
  52 #include <ShapeAnalysis_FreeBounds.hxx>
  53 #include <ElCLib.hxx>
  54
  55 #include <TopAbs.hxx>
  56 #include <TopoDS.hxx>
  57 #include <TopoDS_Shape.hxx>
  58 #include <TopoDS_Edge.hxx>
  59 #include <TopoDS_Wire.hxx>
  60 #include <TopoDS_Shell.hxx>
  61 #include <TopoDS_Solid.hxx>
  62 #include <TopoDS_Compound.hxx>
  63 #include <TopoDS_Iterator.hxx>
  64 #include <TopExp.hxx>
  65 #include <TopExp_Explorer.hxx>
  66
  67 #include <TopTools_MapOfShape.hxx>
  68 #include <TopTools_HSequenceOfShape.hxx>
  69
  70 #include <TColStd_SequenceOfReal.hxx>
  71 #include <TColStd_HSequenceOfTransient.hxx>
  72 #include <TColStd_Array1OfReal.hxx>
  73 #include <TColGeom_SequenceOfCurve.hxx>
  74 #include <TColGeom_Array1OfBSplineCurve.hxx>
  75 #include <TColGeom_HArray1OfBSplineCurve.hxx>
  76
  77 #include <GeomAbs_CurveType.hxx>
  78 #include <Geom_TrimmedCurve.hxx>
  79 #include <GeomConvert_CompCurveToBSplineCurve.hxx>
  80 #include <GeomConvert.hxx>
  81 #include <GeomLProp.hxx>
  82
  83 #include <Precision.hxx>
  84 #include <Standard_NullObject.hxx>
  85 #include <Standard_TypeMismatch.hxx>
  86 #include <Standard_ConstructionError.hxx>
  87
  88 //=======================================================================
  89 //function : GetID
  90 //purpose  :
  91 //=======================================================================
  92 const Standard_GUID& GEOMImpl_ShapeDriver::GetID()
  93 {
  94   static Standard_GUID aShapeDriver("FF1BBB54-5D14-4df2-980B-3A668264EA16");
  95   return aShapeDriver;
  96 }
  97
  98
  99 //=======================================================================
 100 //function : GEOMImpl_ShapeDriver
 101 //purpose  :
 102 //=======================================================================
 103 GEOMImpl_ShapeDriver::GEOMImpl_ShapeDriver()
 104 {
 105 }
 106
 107 //=======================================================================
 108 //function : Execute
 109 //purpose  :
 110 //=======================================================================
 111 Standard_Integer GEOMImpl_ShapeDriver::Execute(TFunction_Logbook& log) const
 112 {
 113   if (Label().IsNull()) return 0;
 114   Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
 115
 116   GEOMImpl_IShapes aCI (aFunction);
 117   Standard_Integer aType = aFunction->GetType();
 118
 119   TopoDS_Shape aShape;
 120   BRep_Builder B;
 121
 122   if (aType == WIRE_EDGES) {
 123     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 124     TopoDS_Wire aWire;
 125     B.MakeWire(aWire);
 126
 127     // add edges
 128     for (unsigned int ind = 1; ind <= aShapes->Length(); ind++) {
 129       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 130       TopoDS_Shape aShape_i = aRefShape->GetValue();
 131       if (aShape_i.IsNull()) {
 132         Standard_NullObject::Raise("Shape for wire construction is null");
 133       }
 134      if (aShape_i.ShapeType() == TopAbs_EDGE || aShape_i.ShapeType() == TopAbs_WIRE) {
 135        TopExp_Explorer exp (aShape_i, TopAbs_EDGE);
 136        for (; exp.More(); exp.Next())
 137          B.Add(aWire, TopoDS::Edge(exp.Current()));
 138      } else {
 139        Standard_TypeMismatch::Raise
 140          ("Shape for wire construction is neither an edge nor a wire");
 141      }
 142     }
 143
 144     // fix edges order
 145     Handle(ShapeFix_Wire) aFW = new ShapeFix_Wire;
 146     aFW->Load(aWire);
 147     aFW->FixReorder();
 148
 149     if (aFW->StatusReorder(ShapeExtend_FAIL1)) {
 150       Standard_ConstructionError::Raise("Wire construction failed: several loops detected");
 151     } else if (aFW->StatusReorder(ShapeExtend_FAIL)) {
 152       Standard_ConstructionError::Raise("Wire construction failed");
 153     } else {
 154     }
 155
 156     // IMP 0019766: Building a Wire from unconnected edges by introducing a tolerance
 157     Standard_Real aTolerance = aCI.GetTolerance();
 158     if (aTolerance < Precision::Confusion())
 159       aTolerance = Precision::Confusion();
 160
 161     aFW->ClosedWireMode() = Standard_False;
 162     aFW->FixConnected(aTolerance);
 163     if (aFW->StatusConnected(ShapeExtend_FAIL)) {
 164       Standard_ConstructionError::Raise("Wire construction failed: cannot build connected wire");
 165     }
 166     // IMP 0019766
 167     if (aFW->StatusConnected(ShapeExtend_DONE3)) {
 168       // Confused with <prec> but not Analyzer.Precision(), set the same
 169       aFW->FixGapsByRangesMode() = Standard_True;
 170       if (aFW->FixGaps3d()) {
 171         Handle(ShapeExtend_WireData) sbwd = aFW->WireData();
 172         Handle(ShapeFix_Edge) aFe = new ShapeFix_Edge;
 173         for (Standard_Integer iedge = 1; iedge <= sbwd->NbEdges(); iedge++) {
 174           TopoDS_Edge aEdge = TopoDS::Edge(sbwd->Edge(iedge));
 175           aFe->FixVertexTolerance(aEdge);
 176           aFe->FixSameParameter(aEdge);
 177         }
 178       }
 179       else if (aFW->StatusGaps3d(ShapeExtend_FAIL)) {
 180         Standard_ConstructionError::Raise("Wire construction failed: cannot fix 3d gaps");
 181       }
 182     }
 183       aShape = aFW->WireAPIMake();
 184   }
 185   else if (aType == FACE_WIRE) {
 186     Handle(GEOM_Function) aRefBase = aCI.GetBase();
 187     TopoDS_Shape aShapeBase = aRefBase->GetValue();
 188     if (aShapeBase.IsNull()) Standard_NullObject::Raise("Argument Shape is null");
 189     TopoDS_Wire W;
 190     if (aShapeBase.ShapeType() == TopAbs_WIRE) {
 191       W = TopoDS::Wire(aShapeBase);
 192       // check the wire is closed
 193       TopoDS_Vertex aV1, aV2;
 194       TopExp::Vertices(W, aV1, aV2);
 195       if ( !aV1.IsNull() && !aV2.IsNull() && aV1.IsSame(aV2) )
 196         aShapeBase.Closed(true);
 197       else
 198         Standard_NullObject::Raise
 199           ("Shape for face construction is not closed");
 200     }
 201     else if (aShapeBase.ShapeType() == TopAbs_EDGE && aShapeBase.Closed()) {
 202       BRepBuilderAPI_MakeWire MW;
 203       MW.Add(TopoDS::Edge(aShapeBase));
 204       if (!MW.IsDone()) {
 205         Standard_ConstructionError::Raise("Wire construction failed");
 206       }
 207           W = MW;
 208     }
 209     else {
 210       Standard_NullObject::Raise
 211         ("Shape for face construction is neither a wire nor a closed edge");
 212     }
 213     GEOMImpl_Block6Explorer::MakeFace(W, aCI.GetIsPlanar(), aShape);
 214     if (aShape.IsNull()) {
 215       Standard_ConstructionError::Raise("Face construction failed");
 216     }
 217   }
 218   else if (aType == FACE_WIRES) {
 219     // Try to build a face from a set of wires and edges
 220     int ind;
 221
 222     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 223     int nbshapes = aShapes->Length();
 224     if (nbshapes < 1) {
 225       Standard_ConstructionError::Raise("No wires or edges given");
 226     }
 227
 228     // 1. Extract all edges from the given arguments
 229     TopTools_MapOfShape aMapEdges;
 230     Handle(TopTools_HSequenceOfShape) aSeqEdgesIn = new TopTools_HSequenceOfShape;
 231
 232     for (ind = 1; ind <= nbshapes; ind++) {
 233       Handle(GEOM_Function) aRefSh_i = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 234       TopoDS_Shape aSh_i = aRefSh_i->GetValue();
 235
 236       TopExp_Explorer anExpE_i (aSh_i, TopAbs_EDGE);
 237       for (; anExpE_i.More(); anExpE_i.Next()) {
 238         if (aMapEdges.Add(anExpE_i.Current())) {
 239           aSeqEdgesIn->Append(anExpE_i.Current());
 240         }
 241       }
 242     }
 243
 244     // 2. Connect edges to wires of maximum length
 245     Handle(TopTools_HSequenceOfShape) aSeqWiresOut;
 246     ShapeAnalysis_FreeBounds::ConnectEdgesToWires(aSeqEdgesIn, Precision::Confusion(),
 247                                                   /*shared*/Standard_False, aSeqWiresOut);
 248
 249     // 3. Separate closed wires
 250     Handle(TopTools_HSequenceOfShape) aSeqClosedWires = new TopTools_HSequenceOfShape;
 251     Handle(TopTools_HSequenceOfShape) aSeqOpenWires = new TopTools_HSequenceOfShape;
 252     for (ind = 1; ind <= aSeqWiresOut->Length(); ind++) {
 253       if (aSeqWiresOut->Value(ind).Closed())
 254         aSeqClosedWires->Append(aSeqWiresOut->Value(ind));
 255       else
 256         aSeqOpenWires->Append(aSeqWiresOut->Value(ind));
 257     }
 258
 259     if (aSeqClosedWires->Length() < 1) {
 260       Standard_ConstructionError::Raise
 261         ("There is no closed contour can be built from the given arguments");
 262     }
 263
 264     // 4. Build a face / list of faces from all the obtained closed wires
 265
 266     // 4.a. Basic face
 267     TopoDS_Shape aFFace;
 268     TopoDS_Wire aW1 = TopoDS::Wire(aSeqClosedWires->Value(1));
 269     GEOMImpl_Block6Explorer::MakeFace(aW1, aCI.GetIsPlanar(), aFFace);
 270     if (aFFace.IsNull()) {
 271       Standard_ConstructionError::Raise("Face construction failed");
 272     }
 273
 274     // 4.b. Add other wires
 275     if (aSeqClosedWires->Length() == 1) {
 276       aShape = aFFace;
 277     }
 278     else {
 279       TopoDS_Compound C;
 280       BRep_Builder aBuilder;
 281       aBuilder.MakeCompound(C);
 282       BRepAlgo_FaceRestrictor FR;
 283
 284       TopAbs_Orientation OriF = aFFace.Orientation();
 285       TopoDS_Shape aLocalS = aFFace.Oriented(TopAbs_FORWARD);
 286       FR.Init(TopoDS::Face(aLocalS), Standard_False, Standard_True);
 287
 288       for (ind = 1; ind <= aSeqClosedWires->Length(); ind++) {
 289         TopoDS_Wire aW = TopoDS::Wire(aSeqClosedWires->Value(ind));
 290         FR.Add(aW);
 291       }
 292
 293       FR.Perform();
 294
 295       if (FR.IsDone()) {
 296         int k = 0;
 297         TopoDS_Shape aFace;
 298         for (; FR.More(); FR.Next()) {
 299           aFace = FR.Current().Oriented(OriF);
 300           aBuilder.Add(C, aFace);
 301           k++;
 302         }
 303         if (k == 1) {
 304           aShape = aFace;
 305         } else {
 306           aShape = C;
 307         }
 308       }
 309     }
 310
 311     // 5. Add all open wires to the result
 312     if (aSeqOpenWires->Length() > 0) {
 313       //Standard_ConstructionError::Raise("There are some open wires");
 314       TopoDS_Compound C;
 315       BRep_Builder aBuilder;
 316       if (aSeqClosedWires->Length() == 1) {
 317         aBuilder.MakeCompound(C);
 318         aBuilder.Add(C, aShape);
 319       }
 320       else {
 321         C = TopoDS::Compound(aShape);
 322       }
 323
 324       for (ind = 1; ind <= aSeqOpenWires->Length(); ind++) {
 325         aBuilder.Add(C, aSeqOpenWires->Value(ind));
 326       }
 327
 328       aShape = C;
 329     }
 330   }
 331   else if (aType == SHELL_FACES) {
 332     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 333     unsigned int ind, nbshapes = aShapes->Length();
 334
 335     // add faces
 336     BRepBuilderAPI_Sewing aSewing(Precision::Confusion()*10.0);
 337     for (ind = 1; ind <= nbshapes; ind++) {
 338       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 339       TopoDS_Shape aShape_i = aRefShape->GetValue();
 340       if (aShape_i.IsNull()) {
 341         Standard_NullObject::Raise("Face for shell construction is null");
 342       }
 343       aSewing.Add(aShape_i);
 344     }
 345
 346     aSewing.Perform();
 347
 348     TopoDS_Shape sh = aSewing.SewedShape();
 349     if( sh.ShapeType()==TopAbs_FACE && nbshapes==1 ) {
 350       // case for creation of shell from one face - PAL12722 (skl 26.06.2006)
 351       TopoDS_Shell ss;
 352       B.MakeShell(ss);
 353       B.Add(ss,sh);
 354       aShape = ss;
 355     }
 356     else {
 357       //TopExp_Explorer exp (aSewing.SewedShape(), TopAbs_SHELL);
 358       TopExp_Explorer exp (sh, TopAbs_SHELL);
 359       Standard_Integer ish = 0;
 360       for (; exp.More(); exp.Next()) {
 361         aShape = exp.Current();
 362         ish++;
 363       }
 364
 365       if (ish != 1)
 366         aShape = aSewing.SewedShape();
 367     }
 368
 369   }
 370   else if (aType == SOLID_SHELL) {
 371     Handle(GEOM_Function) aRefShell = aCI.GetBase();
 372     TopoDS_Shape aShapeShell = aRefShell->GetValue();
 373     if (aShapeShell.IsNull() || aShapeShell.ShapeType() != TopAbs_SHELL) {
 374       Standard_NullObject::Raise("Shape for solid construction is null or not a shell");
 375     }
 376
 377     BRepCheck_Shell chkShell(TopoDS::Shell(aShapeShell));
 378     if(chkShell.Closed() == BRepCheck_NotClosed) return 0;
 379
 380     TopoDS_Solid Sol;
 381     B.MakeSolid(Sol);
 382     B.Add(Sol, aShapeShell);
 383     BRepClass3d_SolidClassifier SC (Sol);
 384     SC.PerformInfinitePoint(Precision::Confusion());
 385     if (SC.State() == TopAbs_IN) {
 386       B.MakeSolid(Sol);
 387       B.Add(Sol, aShapeShell.Reversed());
 388     }
 389
 390     aShape = Sol;
 391
 392   }
 393   else if (aType == SOLID_SHELLS) {
 394     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 395     unsigned int ind, nbshapes = aShapes->Length();
 396     Standard_Integer ish = 0;
 397     TopoDS_Solid Sol;
 398     B.MakeSolid(Sol);
 399
 400     // add shapes
 401     for (ind = 1; ind <= nbshapes; ind++) {
 402       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 403       TopoDS_Shape aShapeShell = aRefShape->GetValue();
 404       if (aShapeShell.IsNull()) {
 405         Standard_NullObject::Raise("Shell for solid construction is null");
 406       }
 407       if (aShapeShell.ShapeType() == TopAbs_SHELL) {
 408         B.Add(Sol, aShapeShell);
 409         ish++;
 410       }
 411     }
 412     if ( ish == 0 ) return 0;
 413     BRepClass3d_SolidClassifier SC (Sol);
 414     SC.PerformInfinitePoint(Precision::Confusion());
 415     if (SC.State() == TopAbs_IN)
 416       aShape = Sol.Reversed();
 417     else
 418       aShape = Sol;
 419   }
 420   else if (aType == COMPOUND_SHAPES) {
 421     Handle(TColStd_HSequenceOfTransient) aShapes = aCI.GetShapes();
 422     unsigned int ind, nbshapes = aShapes->Length();
 423
 424     // add shapes
 425     TopoDS_Compound C;
 426     B.MakeCompound(C);
 427     for (ind = 1; ind <= nbshapes; ind++) {
 428       Handle(GEOM_Function) aRefShape = Handle(GEOM_Function)::DownCast(aShapes->Value(ind));
 429       TopoDS_Shape aShape_i = aRefShape->GetValue();
 430       if (aShape_i.IsNull()) {
 431         Standard_NullObject::Raise("Shape for compound construction is null");
 432       }
 433       B.Add(C, aShape_i);
 434     }
 435
 436     aShape = C;
 437
 438   }
 439   else if (aType == REVERSE_ORIENTATION) {
 440     Handle(GEOM_Function) aRefShape = aCI.GetBase();
 441     TopoDS_Shape aShape_i = aRefShape->GetValue();
 442     if (aShape_i.IsNull()) {
 443        Standard_NullObject::Raise("Shape for reverse is null");
 444     }
 445
 446     BRepBuilderAPI_Copy Copy(aShape_i);
 447     if( Copy.IsDone() ) {
 448       TopoDS_Shape tds = Copy.Shape();
 449       if( tds.IsNull() ) {
 450         Standard_ConstructionError::Raise("Orientation aborted : Can not reverse the shape");
 451       }
 452
 453       if( tds.Orientation() == TopAbs_FORWARD)
 454         tds.Orientation(TopAbs_REVERSED);
 455       else
 456         tds.Orientation(TopAbs_FORWARD);
 457
 458       aShape = tds;
 459     }
 460   }
 461   else if (aType == EDGE_WIRE) {
 462     Handle(GEOM_Function) aRefBase = aCI.GetBase();
 463     TopoDS_Shape aWire = aRefBase->GetValue();
 464     Standard_Real LinTol = aCI.GetTolerance();
 465     Standard_Real AngTol = aCI.GetAngularTolerance();
 466     if (aWire.IsNull()) Standard_NullObject::Raise("Argument Wire is null");
 467
 468     TopoDS_Edge ResEdge;
 469
 470     BRepLib::BuildCurves3d(aWire);
 471     Handle(ShapeFix_Shape) Fixer = new ShapeFix_Shape(aWire);
 472     Fixer->SetPrecision(LinTol);
 473     Fixer->SetMaxTolerance(LinTol);
 474     Fixer->Perform();
 475     TopoDS_Wire theWire = TopoDS::Wire(Fixer->Shape());
 476
 477     TColGeom_SequenceOfCurve CurveSeq;
 478     TopTools_SequenceOfShape LocSeq;
 479     TColStd_SequenceOfReal FparSeq;
 480     TColStd_SequenceOfReal LparSeq;
 481     TColStd_SequenceOfReal TolSeq;
 482     GeomAbs_CurveType CurType;
 483     TopoDS_Vertex FirstVertex, LastVertex;
 484
 485     BRepTools_WireExplorer wexp(theWire) ;
 486     for (; wexp.More(); wexp.Next())
 487     {
 488       TopoDS_Edge anEdge = wexp.Current();
 489       Standard_Real fpar, lpar;
 490       TopLoc_Location aLoc;
 491       Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, aLoc, fpar, lpar);
 492       if (aCurve.IsNull())
 493         continue;
 494
 495       BRepAdaptor_Curve BAcurve(anEdge);
 496       GeomAbs_CurveType aType = BAcurve.GetType();
 497
 498       Handle(Geom_Curve) aBasisCurve = BAcurve.Curve().Curve();
 499
 500       if (aBasisCurve->IsPeriodic())
 501         ElCLib::AdjustPeriodic(aBasisCurve->FirstParameter(), aBasisCurve->LastParameter(),
 502                                Precision::PConfusion(), fpar, lpar);
 503
 504       if (CurveSeq.IsEmpty())
 505       {
 506         CurveSeq.Append(aCurve);
 507         TopoDS_Shape aLocShape;
 508         aLocShape.Location(aLoc);
 509         aLocShape.Orientation(wexp.Orientation());
 510         LocSeq.Append(aLocShape);
 511         FparSeq.Append(fpar);
 512         LparSeq.Append(lpar);
 513         CurType = aType;
 514         FirstVertex = wexp.CurrentVertex();
 515       }
 516       else
 517       {
 518         Standard_Boolean Done = Standard_False;
 519         Standard_Real NewFpar, NewLpar;
 520         GeomAdaptor_Curve GAprevcurve(CurveSeq.Last());
 521         TopoDS_Vertex CurVertex = wexp.CurrentVertex();
 522         TopoDS_Vertex CurFirstVer = TopExp::FirstVertex(anEdge);
 523         TopAbs_Orientation ConnectByOrigin = (CurVertex.IsSame(CurFirstVer))? TopAbs_FORWARD : TopAbs_REVERSED;
 524         if (aCurve == CurveSeq.Last())
 525         {
 526           NewFpar = fpar;
 527           NewLpar = lpar;
 528           if (aBasisCurve->IsPeriodic())
 529           {
 530             if (NewLpar < NewFpar)
 531               NewLpar += aBasisCurve->Period();
 532             if (ConnectByOrigin == TopAbs_FORWARD)
 533               ElCLib::AdjustPeriodic(FparSeq.Last(),
 534                                      FparSeq.Last() + aBasisCurve->Period(),
 535                                      Precision::PConfusion(), NewFpar, NewLpar);
 536             else
 537               ElCLib::AdjustPeriodic(FparSeq.Last() - aBasisCurve->Period(),
 538                                      FparSeq.Last(),
 539                                      Precision::PConfusion(), NewFpar, NewLpar);
 540           }
 541           Done = Standard_True;
 542         }
 543         else if (aType == CurType &&
 544                  aType != GeomAbs_BezierCurve &&
 545                  aType != GeomAbs_BSplineCurve &&
 546                  aType != GeomAbs_OtherCurve)
 547         {
 548           switch (aType)
 549           {
 550           case GeomAbs_Line:
 551             {
 552               gp_Lin aLine    = BAcurve.Line();
 553               gp_Lin PrevLine = GAprevcurve.Line();
 554               if (aLine.Contains(PrevLine.Location(), LinTol) &&
 555                   aLine.Direction().IsParallel(PrevLine.Direction(), AngTol))
 556               {
 557                 gp_Pnt P1 = ElCLib::Value(fpar, aLine);
 558                 gp_Pnt P2 = ElCLib::Value(lpar, aLine);
 559                 NewFpar = ElCLib::Parameter(PrevLine, P1);
 560                 NewLpar = ElCLib::Parameter(PrevLine, P2);
 561                 if (NewLpar < NewFpar)
 562                 {
 563                   Standard_Real MemNewFpar = NewFpar;
 564                   NewFpar = NewLpar;
 565                   NewLpar = MemNewFpar;
 566                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 567                 }
 568                 Done = Standard_True;
 569               }
 570               break;
 571             }
 572           case GeomAbs_Circle:
 573             {
 574               gp_Circ aCircle    = BAcurve.Circle();
 575               gp_Circ PrevCircle = GAprevcurve.Circle();
 576               if (aCircle.Location().Distance(PrevCircle.Location()) <= LinTol &&
 577                   Abs(aCircle.Radius() - PrevCircle.Radius()) <= LinTol &&
 578                   aCircle.Axis().IsParallel(PrevCircle.Axis(), AngTol))
 579               {
 580                 if (aCircle.Axis().Direction() * PrevCircle.Axis().Direction() < 0.)
 581                 {
 582                   Standard_Real memfpar = fpar;
 583                   fpar = lpar;
 584                   lpar = memfpar;
 585                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 586                 }
 587                 gp_Pnt P1 = ElCLib::Value(fpar, aCircle);
 588                 gp_Pnt P2 = ElCLib::Value(lpar, aCircle);
 589                 NewFpar = ElCLib::Parameter(PrevCircle, P1);
 590                 NewLpar = ElCLib::Parameter(PrevCircle, P2);
 591                 if (NewLpar < NewFpar)
 592                   NewLpar += 2.*PI;
 593                 //Standard_Real MemNewFpar = NewFpar, MemNewLpar =  NewLpar;
 594                 if (ConnectByOrigin == TopAbs_FORWARD)
 595                   ElCLib::AdjustPeriodic(FparSeq.Last(),
 596                                          FparSeq.Last() + 2.*PI,
 597                                          Precision::PConfusion(), NewFpar, NewLpar);
 598                 else
 599                   ElCLib::AdjustPeriodic(FparSeq.Last() - 2.*PI,
 600                                          FparSeq.Last(),
 601                                          Precision::PConfusion(), NewFpar, NewLpar);
 602                 Done = Standard_True;
 603               }
 604               break;
 605             }
 606           case GeomAbs_Ellipse:
 607             {
 608               gp_Elips anEllipse   = BAcurve.Ellipse();
 609               gp_Elips PrevEllipse = GAprevcurve.Ellipse();
 610               if (anEllipse.Focus1().Distance(PrevEllipse.Focus1()) <= LinTol &&
 611                   anEllipse.Focus2().Distance(PrevEllipse.Focus2()) <= LinTol &&
 612                   Abs(anEllipse.MajorRadius() - PrevEllipse.MajorRadius()) <= LinTol &&
 613                   Abs(anEllipse.MinorRadius() - PrevEllipse.MinorRadius()) <= LinTol &&
 614                   anEllipse.Axis().IsParallel(PrevEllipse.Axis(), AngTol))
 615               {
 616                 if (anEllipse.Axis().Direction() * PrevEllipse.Axis().Direction() < 0.)
 617                 {
 618                   Standard_Real memfpar = fpar;
 619                   fpar = lpar;
 620                   lpar = memfpar;
 621                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 622                 }
 623                 gp_Pnt P1 = ElCLib::Value(fpar, anEllipse);
 624                 gp_Pnt P2 = ElCLib::Value(lpar, anEllipse);
 625                 NewFpar = ElCLib::Parameter(PrevEllipse, P1);
 626                 NewLpar = ElCLib::Parameter(PrevEllipse, P2);
 627                 if (NewLpar < NewFpar)
 628                   NewLpar += 2.*PI;
 629                 if (ConnectByOrigin == TopAbs_FORWARD)
 630                   ElCLib::AdjustPeriodic(FparSeq.Last(),
 631                                          FparSeq.Last() + 2.*PI,
 632                                          Precision::PConfusion(), NewFpar, NewLpar);
 633                 else
 634                   ElCLib::AdjustPeriodic(FparSeq.Last() - 2.*PI,
 635                                          FparSeq.Last(),
 636                                          Precision::PConfusion(), NewFpar, NewLpar);
 637                 Done = Standard_True;
 638               }
 639               break;
 640             }
 641           case GeomAbs_Hyperbola:
 642             {
 643               gp_Hypr aHypr    = BAcurve.Hyperbola();
 644               gp_Hypr PrevHypr = GAprevcurve.Hyperbola();
 645               if (aHypr.Focus1().Distance(PrevHypr.Focus1()) <= LinTol &&
 646                   aHypr.Focus2().Distance(PrevHypr.Focus2()) <= LinTol &&
 647                   Abs(aHypr.MajorRadius() - PrevHypr.MajorRadius()) <= LinTol &&
 648                   Abs(aHypr.MinorRadius() - PrevHypr.MinorRadius()) <= LinTol &&
 649                   aHypr.Axis().IsParallel(PrevHypr.Axis(), AngTol))
 650               {
 651                 gp_Pnt P1 = ElCLib::Value(fpar, aHypr);
 652                 gp_Pnt P2 = ElCLib::Value(lpar, aHypr);
 653                 NewFpar = ElCLib::Parameter(PrevHypr, P1);
 654                 NewLpar = ElCLib::Parameter(PrevHypr, P2);
 655                 if (NewLpar < NewFpar)
 656                 {
 657                   Standard_Real MemNewFpar = NewFpar;
 658                   NewFpar = NewLpar;
 659                   NewLpar = MemNewFpar;
 660                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 661                 }
 662                 Done = Standard_True;
 663               }
 664               break;
 665             }
 666           case GeomAbs_Parabola:
 667             {
 668               gp_Parab aParab    = BAcurve.Parabola();
 669               gp_Parab PrevParab = GAprevcurve.Parabola();
 670               if (aParab.Location().Distance(PrevParab.Location()) <= LinTol &&
 671                   aParab.Focus().Distance(PrevParab.Focus()) <= LinTol &&
 672                   Abs(aParab.Focal() - PrevParab.Focal()) <= LinTol &&
 673                   aParab.Axis().IsParallel(PrevParab.Axis(), AngTol))
 674               {
 675                 gp_Pnt P1 = ElCLib::Value(fpar, aParab);
 676                 gp_Pnt P2 = ElCLib::Value(lpar, aParab);
 677                 NewFpar = ElCLib::Parameter(PrevParab, P1);
 678                 NewLpar = ElCLib::Parameter(PrevParab, P2);
 679                 if (NewLpar < NewFpar)
 680                 {
 681                   Standard_Real MemNewFpar = NewFpar;
 682                   NewFpar = NewLpar;
 683                   NewLpar = MemNewFpar;
 684                   ConnectByOrigin = TopAbs::Reverse(ConnectByOrigin);
 685                 }
 686                 Done = Standard_True;
 687               }
 688               break;
 689             }
 690           } //end of switch (aType)
 691         } // end of else if (aType == CurType && ...
 692         if (Done)
 693         {
 694           if (NewFpar < FparSeq.Last())
 695             FparSeq(FparSeq.Length()) = NewFpar;
 696           else
 697             LparSeq(LparSeq.Length()) = NewLpar;
 698         }
 699         else
 700         {
 701           CurveSeq.Append(aCurve);
 702           TopoDS_Shape aLocShape;
 703           aLocShape.Location(aLoc);
 704           aLocShape.Orientation(wexp.Orientation());
 705           LocSeq.Append(aLocShape);
 706           FparSeq.Append(fpar);
 707           LparSeq.Append(lpar);
 708           TolSeq.Append(BRep_Tool::Tolerance(CurVertex));
 709           CurType = aType;
 710         }
 711       } // end of else (CurveSeq.IsEmpty()) -> not first time
 712     } // end for (; wexp.More(); wexp.Next())
 713
 714     LastVertex = wexp.CurrentVertex();
 715     TolSeq.Append(BRep_Tool::Tolerance(LastVertex));
 716
 717     if (!CurveSeq.IsEmpty())
 718     {
 719       Standard_Integer nb_curve = CurveSeq.Length();   //number of curves
 720       TColGeom_Array1OfBSplineCurve tab(0,nb_curve-1);                    //array of the curves
 721       TColStd_Array1OfReal tabtolvertex(0,nb_curve-1); //(0,nb_curve-2);  //array of the tolerances
 722
 723       Standard_Integer i;
 724
 725       if (nb_curve > 1)
 726       {
 727         for (i = 1; i <= nb_curve; i++)
 728         {
 729           if (CurveSeq(i)->IsInstance(STANDARD_TYPE(Geom_TrimmedCurve)))
 730             CurveSeq(i) = (*((Handle(Geom_TrimmedCurve)*)&(CurveSeq(i))))->BasisCurve();
 731
 732           Handle(Geom_TrimmedCurve) aTrCurve = new Geom_TrimmedCurve(CurveSeq(i), FparSeq(i), LparSeq(i));
 733           tab(i-1) = GeomConvert::CurveToBSplineCurve(aTrCurve);
 734           tab(i-1)->Transform(LocSeq(i).Location().Transformation());
 735           GeomConvert::C0BSplineToC1BSplineCurve(tab(i-1), Precision::Confusion());
 736           if (LocSeq(i).Orientation() == TopAbs_REVERSED)
 737             tab(i-1)->Reverse();
 738
 739           //Temporary
 740           //char* name = new char[100];
 741           //sprintf(name, "c%d", i);
 742           //DrawTrSurf::Set(name, tab(i-1));
 743
 744           if (i > 1)
 745             tabtolvertex(i-2) = TolSeq(i-1);
 746         } // end for (i = 1; i <= nb_curve; i++)
 747         tabtolvertex(nb_curve-1) = TolSeq(TolSeq.Length());
 748
 749         Standard_Boolean closed_flag = Standard_False;
 750         Standard_Real closed_tolerance = 0.;
 751         if (FirstVertex.IsSame(LastVertex) &&
 752             GeomLProp::Continuity(tab(0), tab(nb_curve-1),
 753                                   tab(0)->FirstParameter(),
 754                                   tab(nb_curve-1)->LastParameter(),
 755                                   Standard_False, Standard_False, LinTol, AngTol) >= GeomAbs_G1)
 756         {
 757           closed_flag = Standard_True ;
 758           closed_tolerance = BRep_Tool::Tolerance(FirstVertex);
 759         }
 760
 761         Handle(TColGeom_HArray1OfBSplineCurve)  concatcurve;     //array of the concatenated curves
 762         Handle(TColStd_HArray1OfInteger)        ArrayOfIndices;  //array of the remining Vertex
 763         GeomConvert::ConcatC1(tab,
 764                               tabtolvertex,
 765                               ArrayOfIndices,
 766                               concatcurve,
 767                               closed_flag,
 768                               closed_tolerance);   //C1 concatenation
 769
 770         if (concatcurve->Length() > 1)
 771         {
 772           GeomConvert_CompCurveToBSplineCurve Concat(concatcurve->Value(concatcurve->Lower()));
 773
 774           for (i = concatcurve->Lower()+1; i <= concatcurve->Upper(); i++)
 775             Concat.Add( concatcurve->Value(i), LinTol, Standard_True );
 776
 777           concatcurve->SetValue(concatcurve->Lower(), Concat.BSplineCurve());
 778         }
 779
 780         ResEdge = BRepLib_MakeEdge(concatcurve->Value(concatcurve->Lower()),
 781                                    FirstVertex, LastVertex);
 782       }
 783       else
 784       {
 785         if (CurveSeq(1)->IsInstance(STANDARD_TYPE(Geom_TrimmedCurve)))
 786           CurveSeq(1) = (*((Handle(Geom_TrimmedCurve)*)&(CurveSeq(i))))->BasisCurve();
 787
 788         CurveSeq(1)->Transform(LocSeq(1).Location().Transformation());
 789         ResEdge = BRepLib_MakeEdge(CurveSeq(1),
 790                                    FirstVertex, LastVertex,
 791                                    FparSeq(1), LparSeq(1));
 792       }
 793     }
 794
 795     aShape = ResEdge;
 796   }
 797
 798   if (aShape.IsNull()) return 0;
 799
 800   // Check shape validity
 801   BRepCheck_Analyzer ana (aShape, false);
 802   if (!ana.IsValid()) {
 803     //Standard_ConstructionError::Raise("Algorithm have produced an invalid shape result");
 804   }
 805
 806   aFunction->SetValue(aShape);
 807
 808   log.SetTouched(Label());
 809
 810   return 1;
 811 }
 812
 813
 814 //=======================================================================
 815 //function :  GEOMImpl_ShapeDriver_Type_
 816 //purpose  :
 817 //=======================================================================
 818 Standard_EXPORT Handle_Standard_Type& GEOMImpl_ShapeDriver_Type_()
 819 {
 820
 821   static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
 822   if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
 823   static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
 824   if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
 825   static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
 826   if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);
 827
 828
 829   static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
 830   static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_ShapeDriver",
 831                                                          sizeof(GEOMImpl_ShapeDriver),
 832                                                          1,
 833                                                          (Standard_Address)_Ancestors,
 834                                                          (Standard_Address)NULL);
 835
 836   return _aType;
 837 }
 838
 839 //=======================================================================
 840 //function : DownCast
 841 //purpose  :
 842 //=======================================================================
 843 const Handle(GEOMImpl_ShapeDriver) Handle(GEOMImpl_ShapeDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
 844 {
 845   Handle(GEOMImpl_ShapeDriver) _anOtherObject;
 846
 847   if (!AnObject.IsNull()) {
 848      if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_ShapeDriver))) {
 849        _anOtherObject = Handle(GEOMImpl_ShapeDriver)((Handle(GEOMImpl_ShapeDriver)&)AnObject);
 850      }
 851   }
 852
 853   return _anOtherObject;
 854 }