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0026498: BRepOffsetAPI_MakeOffset causes segmentation fault
[occt.git] / src / BRepFill / BRepFill_OffsetWire.cxx
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b311480e 1// Created on: 1995-04-20
2// Created by: Bruno DUMORTIER
3// Copyright (c) 1995-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
17// Modified by skv - Fri Jul 8 11:21:38 2005 OCC9145
18
42cf5bc1 19#include <Adaptor3d_Curve.hxx>
20#include <Adaptor3d_OffsetCurve.hxx>
21#include <Bisector_Bisec.hxx>
22#include <BRep_Builder.hxx>
23#include <BRep_CurveRepresentation.hxx>
24#include <BRep_GCurve.hxx>
25#include <BRep_TEdge.hxx>
26#include <BRep_Tool.hxx>
27#include <BRep_TVertex.hxx>
7fd59977 28#include <BRepAdaptor_Curve.hxx>
29#include <BRepAdaptor_Surface.hxx>
7fd59977 30#include <BRepFill_DataMapOfNodeShape.hxx>
42cf5bc1 31#include <BRepFill_DataMapOfOrientedShapeListOfShape.hxx>
7fd59977 32#include <BRepFill_DataMapOfShapeSequenceOfPnt.hxx>
42cf5bc1 33#include <BRepFill_DataMapOfShapeSequenceOfReal.hxx>
34#include <BRepFill_OffsetWire.hxx>
7fd59977 35#include <BRepFill_TrimEdgeTool.hxx>
36#include <BRepLib.hxx>
42cf5bc1 37#include <BRepLib_MakeEdge.hxx>
7fd59977 38#include <BRepLib_MakeFace.hxx>
42cf5bc1 39#include <BRepLib_MakeVertex.hxx>
7fd59977 40#include <BRepLib_MakeWire.hxx>
42cf5bc1 41#include <BRepMAT2d_BisectingLocus.hxx>
42#include <BRepMAT2d_Explorer.hxx>
43#include <BRepMAT2d_LinkTopoBilo.hxx>
7fd59977 44#include <BRepTools.hxx>
42cf5bc1 45#include <BRepTools_Substitution.hxx>
7fd59977 46#include <BRepTools_WireExplorer.hxx>
42cf5bc1 47#include <Geom2d_BSplineCurve.hxx>
7fd59977 48#include <Geom2d_Circle.hxx>
42cf5bc1 49#include <Geom2d_Curve.hxx>
7fd59977 50#include <Geom2d_Line.hxx>
7fd59977 51#include <Geom2d_OffsetCurve.hxx>
42cf5bc1 52#include <Geom2d_TrimmedCurve.hxx>
53#include <Geom2dAdaptor_Curve.hxx>
54#include <Geom2dAdaptor_HCurve.hxx>
55#include <Geom2dConvert_CompCurveToBSplineCurve.hxx>
56#include <Geom2dLProp_CLProps2d.hxx>
7fd59977 57#include <Geom_Circle.hxx>
6a442250 58#include <Geom_Line.hxx>
7fd59977 59#include <Geom_OffsetCurve.hxx>
42cf5bc1 60#include <Geom_Plane.hxx>
61#include <Geom_Surface.hxx>
62#include <Geom_TrimmedCurve.hxx>
63#include <GeomAPI.hxx>
64#include <gp.hxx>
65#include <gp_Ax2.hxx>
66#include <gp_Dir2d.hxx>
67#include <gp_Pln.hxx>
68#include <gp_Vec.hxx>
69#include <MAT2d_CutCurve.hxx>
7fd59977 70#include <MAT_Arc.hxx>
7fd59977 71#include <MAT_Graph.hxx>
42cf5bc1 72#include <MAT_Node.hxx>
7fd59977 73#include <Precision.hxx>
42cf5bc1 74#include <Standard_ConstructionError.hxx>
75#include <Standard_ErrorHandler.hxx>
76#include <Standard_NoSuchObject.hxx>
7fd59977 77#include <Standard_NotImplemented.hxx>
42cf5bc1 78#include <TColgp_Array1OfPnt2d.hxx>
7fd59977 79#include <TColgp_SequenceOfPnt.hxx>
42cf5bc1 80#include <TColStd_Array1OfInteger.hxx>
81#include <TColStd_Array1OfReal.hxx>
82#include <TColStd_SequenceOfReal.hxx>
83#include <TopAbs.hxx>
7fd59977 84#include <TopExp.hxx>
85#include <TopExp_Explorer.hxx>
86#include <TopoDS.hxx>
7fd59977 87#include <TopoDS_Compound.hxx>
42cf5bc1 88#include <TopoDS_Face.hxx>
7fd59977 89#include <TopoDS_Iterator.hxx>
42cf5bc1 90#include <TopoDS_Shape.hxx>
91#include <TopoDS_Wire.hxx>
7fd59977 92#include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
93#include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
42cf5bc1 94#include <TopTools_DataMapOfShapeListOfShape.hxx>
7fd59977 95#include <TopTools_DataMapOfShapeSequenceOfShape.hxx>
42cf5bc1 96#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
7fd59977 97#include <TopTools_IndexedMapOfShape.hxx>
42cf5bc1 98#include <TopTools_ListIteratorOfListOfShape.hxx>
99#include <TopTools_ListOfShape.hxx>
100#include <TopTools_MapIteratorOfMapOfShape.hxx>
101#include <TopTools_MapOfShape.hxx>
102#include <TopTools_SequenceOfShape.hxx>
103
104#include <stdio.h>
873c119f 105#ifdef OCCT_DEBUG
106//#define DRAW
7fd59977 107#ifdef DRAW
108#include <Draw.hxx>
109#include <DrawTrSurf.hxx>
110#include <DrawTrSurf_Curve2d.hxx>
111#include <DBRep.hxx>
ec357c5c 112#include <Geom_Curve.hxx>
7fd59977 113static Standard_Boolean AffichGeom = Standard_False;
114static Standard_Boolean Affich2d = Standard_False;
115static Standard_Boolean AffichEdge = Standard_False;
116static Standard_Integer NbTRIMEDGES = 0;
117static Standard_Integer NbOFFSET = 0;
118static Standard_Integer NbEDGES = 0;
119static Standard_Integer NbBISSEC = 0;
7fd59977 120#endif
873c119f 121#endif
7fd59977 122
123// Modified by Sergey KHROMOV - Thu Nov 16 17:24:39 2000 Begin
124
125static void QuasiFleche(const Adaptor3d_Curve& C,
873c119f 126 const Standard_Real Deflection2,
127 const Standard_Real Udeb,
128 const gp_Pnt& Pdeb,
129 const gp_Vec& Vdeb,
130 const Standard_Real Ufin,
131 const gp_Pnt& Pfin,
132 const gp_Vec& Vfin,
133 const Standard_Integer Nbmin,
134 const Standard_Real Eps,
135 TColStd_SequenceOfReal& Parameters,
136 TColgp_SequenceOfPnt& Points);
7fd59977 137
138static Standard_Boolean PerformCurve (TColStd_SequenceOfReal& Parameters,
873c119f 139 TColgp_SequenceOfPnt& Points,
140 const Adaptor3d_Curve& C,
141 const Standard_Real Deflection,
142 const Standard_Real U1,
143 const Standard_Real U2,
144 const Standard_Real EPSILON,
145 const Standard_Integer Nbmin);
7fd59977 146
147static void CheckBadEdges(const TopoDS_Face& Spine, const Standard_Real Offset,
873c119f 148 const BRepMAT2d_BisectingLocus& Locus,
149 const BRepMAT2d_LinkTopoBilo& Link,
150 TopTools_ListOfShape& BadEdges);
7fd59977 151
152static Standard_Integer CutEdge (const TopoDS_Edge& E,
873c119f 153 const TopoDS_Face& F,
154 Standard_Integer ForceCut,
155 TopTools_ListOfShape& Cuts);
7fd59977 156
157
158static void CutCurve (const Handle(Geom2d_TrimmedCurve)& C,
873c119f 159 const Standard_Integer nbParts,
160 TColGeom2d_SequenceOfCurve& theCurves);
7fd59977 161// Modified by Sergey KHROMOV - Thu Nov 16 17:24:47 2000 End
162
163
164static void EdgeVertices (const TopoDS_Edge& E,
873c119f 165 TopoDS_Vertex& V1,
166 TopoDS_Vertex& V2)
7fd59977 167{
168 if (E.Orientation() == TopAbs_REVERSED) {
169 TopExp::Vertices(E,V2,V1);
170 }
171 else {
172 TopExp::Vertices(E,V1,V2);
173 }
174}
7fd59977 175static Standard_Boolean VertexFromNode
873c119f 176 (const Handle(MAT_Node)& aNode,
177 const Standard_Real Offset,
178 gp_Pnt2d& PN,
179 BRepFill_DataMapOfNodeShape& MapNodeVertex,
180 TopoDS_Vertex& VN);
7fd59977 181
182static void StoreInMap (const TopoDS_Shape& V1,
873c119f 183 const TopoDS_Shape& V2,
184 TopTools_IndexedDataMapOfShapeShape& MapVV);
7fd59977 185
186static void TrimEdge (const TopoDS_Edge& CurrentEdge,
e11c1bc4 187 const TopoDS_Shape& CurrentSpine,
188 const TopoDS_Face& AllSpine,
873c119f 189 const TopTools_ListOfShape& D,
6a442250 190 TopTools_SequenceOfShape& Sv,
191 TColStd_SequenceOfReal& MapverPar,
192 TopTools_SequenceOfShape& S,
193 TopTools_IndexedDataMapOfShapeShape& MapVV,
194 const Standard_Integer IndOfE);
7fd59977 195
e11c1bc4 196static Standard_Boolean IsInnerEdge(const TopoDS_Shape& ProE,
197 const TopoDS_Face& AllSpine,
198 Standard_Real& TrPar1,
199 Standard_Real& TrPar2);
200
7fd59977 201static Standard_Boolean DoubleOrNotInside (const TopTools_ListOfShape& EC,
873c119f 202 const TopoDS_Vertex& V);
7fd59977 203
204static Standard_Boolean IsSmallClosedEdge(const TopoDS_Edge& anEdge,
873c119f 205 const TopoDS_Vertex& aVertex);
7fd59977 206
207static void MakeCircle
873c119f 208 (const TopoDS_Edge& E,
209 const TopoDS_Vertex& V,
210 const TopoDS_Face& F,
211 const Standard_Real Offset,
212 BRepFill_IndexedDataMapOfOrientedShapeListOfShape& Map,
213 const Handle(Geom_Plane)& RefPlane);
7fd59977 214
215static void MakeOffset
873c119f 216 (const TopoDS_Edge& E,
217 const TopoDS_Face& F,
218 const Standard_Real Offset,
219 BRepFill_IndexedDataMapOfOrientedShapeListOfShape& Map,
220 const Handle(Geom_Plane)& RefPlane,
221 const Standard_Boolean IsOpenResult,
c7806cb6 222 const GeomAbs_JoinType theJoinType,
873c119f 223 const TopoDS_Vertex * Ends);
7fd59977 224
7642e2d0 225Standard_Boolean CheckSmallParamOnEdge(const TopoDS_Edge& anEdge);
226
7fd59977 227//=======================================================================
228//function : KPartCircle
229//purpose :
230//=======================================================================
231
232static Standard_Boolean KPartCircle
873c119f 233 (const TopoDS_Face& mySpine,
234 const Standard_Real myOffset,
235 const Standard_Boolean IsOpenResult,
236 const Standard_Real Alt,
237 TopoDS_Shape& myShape,
238 BRepFill_IndexedDataMapOfOrientedShapeListOfShape& myMap,
239 Standard_Boolean& myIsDone)
7fd59977 240{
7fd59977 241 TopExp_Explorer exp(mySpine,TopAbs_EDGE);
242 Standard_Integer NbEdges = 0;
243 TopoDS_Edge E;
244
245 for (; exp.More(); exp.Next()) {
246 NbEdges++;
247 E = TopoDS::Edge(exp.Current());
248 if (NbEdges > 1) return Standard_False;
249 }
7fd59977 250
251 Standard_Real f,l;
252 TopLoc_Location L;
253 Handle(Geom_Curve) C = BRep_Tool::Curve(E,L,f,l);
254
255 if (C->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
256 Handle(Geom_TrimmedCurve) Ct = Handle(Geom_TrimmedCurve)::DownCast(C);
257 C = Ct->BasisCurve();
258 }
259
da72a17c 260 if ((C->IsKind(STANDARD_TYPE(Geom_Circle)) && BRep_Tool::IsClosed(E)) || //closed circle
e11c1bc4 261 IsOpenResult)
6a442250 262 {
6a442250 263 Standard_Real anOffset = myOffset;
6a442250 264
0e0f7a7c 265 Handle(Geom2d_Curve) aPCurve = BRep_Tool::CurveOnSurface(E, mySpine, f, l);
6a442250 266 Handle(Geom2dAdaptor_HCurve) AHC = new Geom2dAdaptor_HCurve(aPCurve, f, l);
0e0f7a7c 267 Handle(Geom2d_Curve) OC;
268 if (AHC->GetType() == GeomAbs_Line)
269 {
ef237d73 270 if (E.Orientation() == TopAbs_REVERSED)
271 anOffset *= -1;
0e0f7a7c 272 Adaptor3d_OffsetCurve Off(AHC,anOffset);
273 OC = new Geom2d_Line(Off.Line());
274 }
275 else if (AHC->GetType() == GeomAbs_Circle)
276 {
ef237d73 277 if (E.Orientation() == TopAbs_FORWARD)
278 anOffset *= -1;
0e0f7a7c 279 gp_Circ2d theCirc = AHC->Circle();
c7806cb6 280 if (anOffset > 0. || Abs(anOffset) < theCirc.Radius())
281 OC = new Geom2d_Circle (theCirc.Position(), theCirc.Radius() + anOffset);
282 else
283 {
284 myIsDone = Standard_False;
285 return Standard_False;
873c119f 286 }
0e0f7a7c 287 }
288 else
289 {
ef237d73 290 if (E.Orientation() == TopAbs_FORWARD)
291 anOffset *= -1;
0e0f7a7c 292 Handle(Geom2d_TrimmedCurve) G2dT = new Geom2d_TrimmedCurve(aPCurve, f, l);
293 OC = new Geom2d_OffsetCurve( G2dT, anOffset);
294 }
295 Handle(Geom_Surface) aSurf = BRep_Tool::Surface(mySpine);
6a442250 296 Handle(Geom_Plane) aPlane = Handle(Geom_Plane)::DownCast(aSurf);
0e0f7a7c 297 myShape = BRepLib_MakeEdge(OC, aPlane, f, l);
6a442250 298 BRepLib::BuildCurve3d(TopoDS::Edge(myShape));
299
300 myShape.Orientation(E.Orientation());
301 myShape.Location(L);
302 if (Alt != 0.) {
303 BRepAdaptor_Surface S(mySpine,0);
304 gp_Ax1 Nor = S.Plane().Axis();
305 gp_Trsf T;
306 gp_Vec Trans(Nor.Direction());
307 Trans = Alt*Trans;
308 T.SetTranslation(Trans);
309 myShape.Move(TopLoc_Location(T));
310 }
311
312 TopTools_ListOfShape LL;
313 LL.Append(myShape);
314 myMap.Add(E,LL);
315
316 TopoDS_Edge myEdge = TopoDS::Edge(myShape);
317 myShape = BRepLib_MakeWire(myEdge);
318
319 myIsDone = Standard_True;
320 return Standard_True;
321 }
7fd59977 322
0e0f7a7c 323 return Standard_False;
7fd59977 324}
325
326//=======================================================================
327//function : BRepFill_OffsetWire
328//purpose :
329//=======================================================================
330
331BRepFill_OffsetWire::BRepFill_OffsetWire()
6a442250 332 : myIsOpenResult(Standard_False),
333 myIsDone(Standard_False)
7fd59977 334{
335}
336
337
338//=======================================================================
339//function : BRepFill_OffsetWire
340//purpose :
341//=======================================================================
342
343BRepFill_OffsetWire::BRepFill_OffsetWire(const TopoDS_Face& Spine,
873c119f 344 const GeomAbs_JoinType Join,
345 const Standard_Boolean IsOpenResult)
7fd59977 346{
6a442250 347 Init(Spine,Join,IsOpenResult);
7fd59977 348}
349
7fd59977 350//=======================================================================
351//function : Init
352//purpose :
353//=======================================================================
354
355void BRepFill_OffsetWire::Init(const TopoDS_Face& Spine,
873c119f 356 const GeomAbs_JoinType Join,
357 const Standard_Boolean IsOpenResult)
7fd59977 358{
7fd59977 359 myIsDone = Standard_False;
360 TopoDS_Shape aLocalShape = Spine.Oriented(TopAbs_FORWARD);
361 mySpine = TopoDS::Face(aLocalShape);
873c119f 362 // mySpine = TopoDS::Face(Spine.Oriented(TopAbs_FORWARD));
7fd59977 363 myJoinType = Join;
6a442250 364 myIsOpenResult = IsOpenResult;
873c119f 365
7fd59977 366 myMap.Clear();
367 myMapSpine.Clear();
368 //------------------------------------------------------------------
0d969553 369 // cut the spine for bissectors.
7fd59977 370 //------------------------------------------------------------------
873c119f 371 // Modified by Sergey KHROMOV - Tue Nov 26 17:39:03 2002 Begin
7fd59977 372 static BRepMAT2d_Explorer Exp;
373
374 Exp.Perform(mySpine);
375
873c119f 376 // TopoDS_Face anOldSpine = mySpine;
7fd59977 377
378 mySpine = TopoDS::Face(Exp.ModifiedShape(mySpine));
379 PrepareSpine ();
380
873c119f 381 // Modified by Sergey KHROMOV - Tue Nov 26 17:39:03 2002 End
7fd59977 382 TopoDS_Shape aShape;
86b3805f 383 BRepFill_IndexedDataMapOfOrientedShapeListOfShape aMap;
7fd59977 384 Standard_Boolean Done;
e11c1bc4 385 if (KPartCircle(myWorkSpine,1.,myIsOpenResult,0.,aShape,aMap,Done)) return;
873c119f 386
7fd59977 387
388 //-----------------------------------------------------
0d969553
Y		 389 // Calculate the map of bissectors to the left.
390 // and Links Topology -> base elements of the map.
7fd59977 391 //-----------------------------------------------------
392
873c119f 393 // Modified by Sergey KHROMOV - Tue Nov 26 17:39:03 2002 Begin
394 // static BRepMAT2d_Explorer Exp;
395 // Modified by Sergey KHROMOV - Tue Nov 26 17:39:03 2002 End
7fd59977 396 Exp.Perform(myWorkSpine);
c19dd45e 397 myBilo.Compute(Exp, 1 ,MAT_Left, myJoinType, myIsOpenResult);
873c119f 398 myLink.Perform(Exp,myBilo);
7fd59977 399}
400
401
402//=======================================================================
403//function : IsDone
404//purpose :
405//=======================================================================
406
407Standard_Boolean BRepFill_OffsetWire::IsDone() const
408{
409 return myIsDone;
410}
411
412
413//=======================================================================
414//function : Spine
415//purpose :
416//=======================================================================
417
418const TopoDS_Face& BRepFill_OffsetWire::Spine() const
419{
420 return mySpine;
421}
422
423
424//=======================================================================
425//function : Shape
426//purpose :
427//=======================================================================
428
429const TopoDS_Shape& BRepFill_OffsetWire::Shape() const
430{
431 return myShape;
432}
433
434
435//=======================================================================
436//function : GeneratedShapes
437//purpose :
438//=======================================================================
439
440const TopTools_ListOfShape& BRepFill_OffsetWire::GeneratedShapes
873c119f 441 (const TopoDS_Shape& SpineShape)
7fd59977 442{
443 if (!myCallGen) {
444 if (!myMapSpine.IsEmpty()) {
0d969553 445 // myMapSpine can be empty if passed by PerformWithBilo.
7fd59977 446 TopTools_DataMapIteratorOfDataMapOfShapeShape it(myMapSpine);
447 for (; it.More(); it.Next()) {
86b3805f
J		 448 if (myMap.Contains(it.Key())) {
449 if (!myMap.Contains(it.Value())) {
7fd59977 450 TopTools_ListOfShape L;
86b3805f 451 myMap.Add(it.Value(),L);
7fd59977 452 }
453 if ( !it.Value().IsSame(it.Key())) {
86b3805f
J		 454 myMap.ChangeFromKey(it.Value()).Append(myMap.ChangeFromKey(it.Key()));
455 //myMap.UnBind(it.Key());
456 TopoDS_Shape LastShape = myMap.FindKey(myMap.Extent());
457 TopTools_ListOfShape LastList;
458 LastList.Append(myMap(myMap.Extent()));
459 myMap.RemoveLast();
460 if (myMap.FindIndex(it.Key()) != 0)
461 myMap.Substitute(myMap.FindIndex(it.Key()), LastShape, LastList);
7fd59977 462 }
463 }
86b3805f
J		 464 if (myMap.Contains(it.Key().Reversed())) {
465 if (!myMap.Contains(it.Value().Reversed())) {
7fd59977 466 TopTools_ListOfShape L;
86b3805f 467 myMap.Add(it.Value().Reversed(),L);
7fd59977 468 }
469 if ( !it.Value().IsSame(it.Key())) {
86b3805f
J		 470 myMap.ChangeFromKey(it.Value().Reversed()).Append(myMap.ChangeFromKey(it.Key().Reversed()));
471 //myMap.UnBind(it.Key().Reversed());
472 TopoDS_Shape LastShape = myMap.FindKey(myMap.Extent());
473 TopTools_ListOfShape LastList;
474 LastList.Append(myMap(myMap.Extent()));
475 myMap.RemoveLast();
476 if (myMap.FindIndex(it.Key().Reversed()) != 0)
477 myMap.Substitute(myMap.FindIndex(it.Key().Reversed()), LastShape, LastList);
7fd59977 478 }
479 }
480 }
481 }
482 myCallGen = Standard_True;
483 }
873c119f 484
86b3805f
J		 485 if (myMap.Contains(SpineShape)) {
486 return myMap.FindFromKey(SpineShape);
7fd59977 487 }
488 else {
489 static TopTools_ListOfShape Empty;
490 return Empty;
491 }
492}
493
494
495//=======================================================================
496//function : JoinType
497//purpose :
498//=======================================================================
499
500GeomAbs_JoinType BRepFill_OffsetWire::JoinType() const
501{
502 return myJoinType;
503}
504
505//=======================================================================
506//function : Perform
507//purpose :
508//=======================================================================
509
510void BRepFill_OffsetWire::Perform (const Standard_Real Offset,
873c119f 511 const Standard_Real Alt)
7fd59977 512{
91bb31f3 513 // Modified by skv - Fri Jul 8 11:21:38 2005 OCC9145 Begin
514 try
515 {
7fd59977 516 OCC_CATCH_SIGNALS
91bb31f3 517 myCallGen = Standard_False;
e11c1bc4 518 if (KPartCircle(myWorkSpine,Offset,myIsOpenResult,Alt,myShape,myMap,myIsDone)) return;
7fd59977 519
520 TopoDS_Face oldWorkSpain = myWorkSpine;
521
522 TopTools_ListOfShape BadEdges;
523 CheckBadEdges(myWorkSpine,Offset,myBilo,myLink,BadEdges);
524
91bb31f3 525 if(!BadEdges.IsEmpty())
526 {
7fd59977 527 // Modification of myWorkSpine;
528 //cout << "Modification of myWorkSpine : " << BadEdges.Extent() << endl;
529 BRepTools_Substitution aSubst;
530 TopTools_ListIteratorOfListOfShape it(BadEdges);
531 TopTools_ListOfShape aL;
532 Standard_Real aDefl = .01 * Abs(Offset);
533 TColStd_SequenceOfReal Parameters;
534 TColgp_SequenceOfPnt Points;
535
536 for(; it.More(); it.Next()) {
91bb31f3 537 aL.Clear();
538 Parameters.Clear();
539 Points.Clear();
540 const TopoDS_Shape& anE = it.Value();
541
542 TopoDS_Vertex Vf, Vl;
543 TopExp::Vertices(TopoDS::Edge(anE), Vf, Vl);
544
545 Standard_Real f, l;
546 Handle(Geom_Curve) G3d = BRep_Tool::Curve(TopoDS::Edge(anE),f,l);
547 GeomAdaptor_Curve AC(G3d,f,l);
548
549 PerformCurve(Parameters, Points, AC, aDefl, f,
873c119f 550 l, Precision::Confusion(), 2);
91bb31f3 551
552 Standard_Integer NPnts = Points.Length();
553 if(NPnts > 2)
554 {
555 //cout << NPnts << " points " << endl;
556 TopoDS_Vertex FV = Vf;
557 TopoDS_Vertex LV;
558 TopoDS_Edge newE;
559 Standard_Integer np;
560 for(np = 2; np < NPnts; np++) {
561 gp_Pnt LP = Points(np);
562 LV = BRepLib_MakeVertex(LP);
563 newE = BRepLib_MakeEdge(FV, LV);
564 aL.Append(newE);
565 FV = LV;
566 }
567 LV = Vl;
568 newE = BRepLib_MakeEdge(FV, LV);
569 aL.Append(newE);
570 }
571 else
572 {
573 //cout << " 2 points " << endl;
574 TopoDS_Edge newE = BRepLib_MakeEdge(Vf, Vl);
575 aL.Append(newE);
576 }
577 //Update myMapSpine
578 if (myMapSpine.IsBound( anE ))
579 {
580 TopTools_ListIteratorOfListOfShape newit( aL );
581 for (; newit.More(); newit.Next())
582 {
583 TopoDS_Edge NewEdge = TopoDS::Edge( newit.Value() );
584 myMapSpine.Bind( NewEdge, myMapSpine(anE) );
585 TopoDS_Vertex NewV1, NewV2;
586 EdgeVertices( NewEdge, NewV1, NewV2 );
587 if (!myMapSpine.IsBound(NewV1)) myMapSpine.Bind( NewV1, myMapSpine(anE) );
588 if (!myMapSpine.IsBound(NewV2)) myMapSpine.Bind( NewV2, myMapSpine(anE) );
589 }
590 myMapSpine.UnBind( anE );
591 }
592 ///////////////////
593 aSubst.Substitute(anE, aL);
7fd59977 594 }
595
596 TopTools_DataMapOfShapeListOfShape wwmap;
597 TopoDS_Iterator itws( myWorkSpine );
598 for (; itws.More(); itws.Next())
91bb31f3 599 {
600 TopoDS_Shape aWire = itws.Value();
601 aSubst.Build( aWire );
602 if (aSubst.IsCopied(aWire))
603 {
604 TopoDS_Wire NewWire = TopoDS::Wire( aSubst.Copy(aWire).First() );
605 NewWire.Closed( aWire.Closed() );
606 TopTools_ListOfShape Lw;
607 Lw.Append( NewWire );
608 wwmap.Bind( aWire, Lw );
609 }
610 }
7fd59977 611 aSubst.Clear();
612 TopTools_DataMapIteratorOfDataMapOfShapeListOfShape itmap( wwmap );
613 for (; itmap.More(); itmap.Next())
91bb31f3 614 aSubst.Substitute( itmap.Key(), itmap.Value() );
873c119f 615
7fd59977 616 aSubst.Build(myWorkSpine);
873c119f 617
7fd59977 618 if(aSubst.IsCopied(myWorkSpine)) {
91bb31f3 619 myWorkSpine = TopoDS::Face(aSubst.Copy(myWorkSpine).First());
ab87e6fc 620
91bb31f3 621 BRepMAT2d_Explorer newExp;
622 newExp.Perform(myWorkSpine);
623 BRepMAT2d_BisectingLocus newBilo;
624 BRepMAT2d_LinkTopoBilo newLink;
c19dd45e 625 newBilo.Compute(newExp, 1, MAT_Left, myJoinType, myIsOpenResult);
ab87e6fc 626
91bb31f3 627 if(!newBilo.IsDone())
628 {
629 myShape.Nullify();
630 myIsDone = Standard_False;
631 return;
632 }
7fd59977 633
91bb31f3 634 newLink.Perform(newExp,newBilo);
635 PerformWithBiLo(myWorkSpine,Offset,newBilo,newLink,myJoinType,Alt);
636 myWorkSpine = oldWorkSpain;
7fd59977 637 }
638 else {
91bb31f3 639 PerformWithBiLo(myWorkSpine,Offset,myBilo,myLink,myJoinType,Alt);
7fd59977 640 }
7fd59977 641 }
91bb31f3 642 else
643 {
7fd59977 644 PerformWithBiLo(myWorkSpine,Offset,myBilo,myLink,myJoinType,Alt);
645 }
ab87e6fc 646 }
b350f6ee 647 catch (Standard_Failure)//Every exception was caught.
91bb31f3 648 {
7fd59977 649 myShape.Nullify();
650 myIsDone = Standard_False;
0797d9d3 651#ifdef OCCT_DEBUG
ab87e6fc 652 cout<<"An exception was caught in BRepFill_OffsetWire::Perform : ";
653 Standard_Failure::Caught()->Print(cout);
654 cout<<endl;
63c629aa 655#endif
91bb31f3 656
7fd59977 657 return;
658 }
ab87e6fc 659
91bb31f3 660 // Modified by skv - Fri Jul 8 11:21:38 2005 OCC9145 End
661 // Modified by Sergey KHROMOV - Thu Mar 14 10:48:15 2002 Begin
6a442250 662 if (!myIsOpenResult)
663 {
664 TopExp_Explorer anExp(myShape, TopAbs_WIRE);
873c119f 665
6a442250 666 for (; anExp.More(); anExp.Next()) {
667 const TopoDS_Shape &aWire = anExp.Current();
873c119f 668
6a442250 669 if (!aWire.Closed()) {
670 myShape.Nullify();
671 myIsDone = Standard_False;
672 Standard_ConstructionError::Raise("Offset wire is not closed.");
673 }
7fd59977 674 }
675 }
91bb31f3 676 // Modified by Sergey KHROMOV - Thu Mar 14 10:48:16 2002 End
7fd59977 677}
678
679//=======================================================================
680//function : Compute
681//purpose :
682//=======================================================================
683
684void Compute (const TopoDS_Face& Spine,
873c119f 685 TopoDS_Shape& aShape,
686 BRepFill_IndexedDataMapOfOrientedShapeListOfShape& Map,
687 const Standard_Real Alt)
7fd59977 688{
689 BRep_Builder B;
690 B.MakeCompound(TopoDS::Compound(aShape));
691 Standard_Real ALT = Alt;
692 if ( Spine.Orientation() == TopAbs_REVERSED) ALT = -Alt;
693 gp_Trsf T;
694 T.SetTranslation(gp_Vec(0.,0.,ALT));
695 TopLoc_Location L(T);
696
697 for ( TopExp_Explorer exp(Spine,TopAbs_WIRE); exp.More(); exp.Next()) {
698 const TopoDS_Wire& CurW = TopoDS::Wire(exp.Current());
699 TopoDS_Shape aLocalShape = CurW.Moved(L);
700 TopoDS_Wire NewW = TopoDS::Wire(aLocalShape);
873c119f 701 // TopoDS_Wire NewW = TopoDS::Wire(CurW.Moved(L));
7fd59977 702 B.Add(aShape,NewW);
0d969553 703 // update Map.
7fd59977 704 TopoDS_Iterator it1( CurW);
705 TopoDS_Iterator it2( NewW);
706 for ( ; it1.More(); it1.Next(), it2.Next()) {
707 TopTools_ListOfShape List;
708 List.Append(it2.Value());
86b3805f 709 Map.Add(it1.Value(), List);
7fd59977 710 }
711 }
712}
713
714//=======================================================================
715//function : PerformWithBiLo
716//purpose :
717//=======================================================================
718
719void BRepFill_OffsetWire::PerformWithBiLo
873c119f 720 (const TopoDS_Face& Spine,
721 const Standard_Real Offset,
722 const BRepMAT2d_BisectingLocus& Locus,
723 BRepMAT2d_LinkTopoBilo& Link,
724 const GeomAbs_JoinType Join,
725 const Standard_Real Alt)
7fd59977 726{
7fd59977 727 myIsDone = Standard_False;
728 TopoDS_Shape aLocalShape = Spine.Oriented(TopAbs_FORWARD);
729 myWorkSpine = TopoDS::Face(aLocalShape);
873c119f 730 // myWorkSpine = TopoDS::Face(Spine.Oriented(TopAbs_FORWARD));
7fd59977 731 myJoinType = Join;
732 myOffset = Offset ;
733 myShape.Nullify();
734
735
736 if (mySpine.IsNull()) {
737 TopoDS_Shape aLocalShape = Spine.Oriented(TopAbs_FORWARD);
738 mySpine = TopoDS::Face(aLocalShape);
873c119f 739 // mySpine = TopoDS::Face(Spine.Oriented(TopAbs_FORWARD));
740 }
7fd59977 741 myMap.Clear();
742
7fd59977 743 if ( Abs(myOffset) < Precision::Confusion()) {
744 Compute(mySpine,myShape,myMap,Alt);
745 myIsDone = Standard_True;
746 return;
747 }
748
0d969553
Y		 749 //********************************
750 // Calculate for a non null offset
751 //********************************
e11c1bc4 752 if (KPartCircle(myWorkSpine,Offset,myIsOpenResult,Alt,myShape,myMap,myIsDone))
91bb31f3 753 return;
7fd59977 754
755 BRep_Builder myBuilder;
756 myBuilder.MakeCompound(TopoDS::Compound(myShape));
873c119f 757
7fd59977 758 //---------------------------------------------------------------------
0d969553
Y		 759 // MapNodeVertex : associate to each node of the map (key1) and to
760 // each element of the profile (key2) a vertex (item).
761 // MapBis : all edges or vertices (item) generated by
762 // a bisectrice on a face or an edge (key) of revolution tubes.
763 // MapVerPar : Map of parameters of vertices on parallel edges
764 // the list contained in MapVerPar (E) corresponds to
765 // parameters on E of vertices contained in MapBis(E);
7fd59977 766 //---------------------------------------------------------------------
767
768
769 BRepFill_DataMapOfNodeShape MapNodeVertex;
770 TopTools_DataMapOfShapeSequenceOfShape MapBis;
771 BRepFill_DataMapOfShapeSequenceOfReal MapVerPar;
772
773 TopTools_DataMapOfShapeShape EmptyMap;
774 TopTools_SequenceOfShape EmptySeq;
775 TopTools_ListOfShape EmptyList;
776 TColStd_SequenceOfReal EmptySeqOfReal;
777
778 Standard_Real ALT = Alt;
779 Handle(Geom_Plane) RefPlane =
780 Handle(Geom_Plane)::DownCast(BRep_Tool::Surface(myWorkSpine));
781 if ( myWorkSpine.Orientation() == TopAbs_REVERSED) ALT = -Alt;
782 RefPlane = Handle(Geom_Plane)::DownCast
783 (RefPlane->Translated( ALT * gp_Vec(RefPlane->Axis().Direction() )));
784
785 //---------------------------------------------------------------
0d969553 786 // Construction of Circles and OffsetCurves
7fd59977 787 //---------------------------------------------------------------
6a442250 788
789 TopoDS_Vertex Ends [2];
790 if (myIsOpenResult)
791 {
792 TopoDS_Wire theWire;
793 TopoDS_Iterator iter(mySpine);
794 theWire = TopoDS::Wire(iter.Value());
795 TopExp::Vertices(theWire, Ends[0], Ends[1]);
796 }
873c119f 797
7fd59977 798 for (Standard_Integer ic = 1; ic <= Locus.NumberOfContours(); ic++) {
799 TopoDS_Shape PEE = Link.GeneratingShape(Locus.BasicElt(ic,Locus.NumberOfElts(ic)));
800 TopoDS_Shape& PE = PEE ;
801 for (Standard_Integer ie = 1; ie <= Locus.NumberOfElts(ic); ie++) {
802 const TopoDS_Shape& SE = Link.GeneratingShape(Locus.BasicElt(ic,ie));
803 if (SE.ShapeType() == TopAbs_VERTEX) {
0e0f7a7c 804 if (!SE.IsSame(Ends[0]) && !SE.IsSame(Ends[1]))
805 MakeCircle (TopoDS::Edge(PE),TopoDS::Vertex(SE),
806 myWorkSpine,myOffset,myMap,RefPlane);
7fd59977 807 }
808 else {
873c119f 809 MakeOffset (TopoDS::Edge(SE),myWorkSpine,myOffset,myMap,RefPlane,
c7806cb6 810 myIsOpenResult, myJoinType, Ends);
873c119f 811 PE = SE;
7fd59977 812 }
813 }
814 }
815
016dfb16 816 //Remove possible hanging arcs on vertices
817 if (myIsOpenResult && myJoinType == GeomAbs_Arc)
818 {
819 if (!myMap.IsEmpty() &&
820 myMap.FindKey(1).ShapeType() == TopAbs_VERTEX)
821 {
822 //myMap.RemoveFirst();
823 TopoDS_Shape LastShape = myMap.FindKey(myMap.Extent());
824 TopTools_ListOfShape LastList;
825 LastList.Append(myMap(myMap.Extent()));
826 myMap.RemoveLast();
827 if (!myMap.IsEmpty())
828 myMap.Substitute(1, LastShape, LastList);
829 }
830 if (!myMap.IsEmpty() &&
831 myMap.FindKey(myMap.Extent()).ShapeType() == TopAbs_VERTEX)
832 myMap.RemoveLast();
833 }
7fd59977 834
873c119f 835#ifdef OCCT_DEBUG
1896126e 836#ifdef DRAW
7fd59977 837 if (AffichEdge) {
0d969553 838 cout << " End Construction of geometric primitives "<<endl;
7fd59977 839 }
840#endif
873c119f 841#endif
7fd59977 842
843
844 //---------------------------------------------------
0d969553 845 // Construction of offset vertices.
7fd59977 846 //---------------------------------------------------
847 BRepFill_DataMapOfOrientedShapeListOfShape Detromp;
848 Handle(MAT_Arc) CurrentArc;
849 Handle(Geom2d_Curve) Bis, PCurve1, PCurve2 ;
850 Handle(Geom_Curve) CBis;
851 Standard_Boolean Reverse;
852 TopoDS_Edge CurrentEdge;
853 TopoDS_Shape S [2];
854 TopoDS_Edge E [2];
855 TopLoc_Location L;
86b3805f 856 Standard_Integer j, k;
7fd59977 857
858 for (Standard_Integer i = 1; i <= Locus.Graph()->NumberOfArcs(); i++) {
859
860 CurrentArc = Locus.Graph()->Arc(i);
861 Bisector_Bisec Bisec = Locus.GeomBis(CurrentArc,Reverse);
873c119f 862#ifdef OCCT_DEBUG
7fd59977 863#ifdef DRAW
873c119f 864
865 if ( AffichGeom) {
866 char name[256];
867 sprintf(name,"BISSEC_%d",NbBISSEC++);
868 DrawTrSurf::Set(name,Bisec.Value());
869 }
870#endif
7fd59977 871#endif
872
0d969553
Y		 873 //-------------------------------------------------------------------
874 // Return elements of the spine corresponding to separate basicElts.
875 //-------------------------------------------------------------------
7fd59977 876 S [0] = Link.GeneratingShape(CurrentArc->FirstElement());
877 S [1] = Link.GeneratingShape(CurrentArc->SecondElement());
878
879 TopTools_SequenceOfShape Vertices;
880 TColgp_SequenceOfPnt Params;
873c119f 881
7fd59977 882 TopTools_DataMapOfShapeSequenceOfShape MapSeqVer;
883 BRepFill_DataMapOfShapeSequenceOfPnt MapSeqPar;
884
885 //-----------------------------------------------------------
0d969553
Y		 886 // Return parallel edges on each face.
887 // If no offset generated => move to the next bissectrice.
7fd59977 888 //--------------------------------------------------------------
86b3805f
J		 889 if (myMap.Contains(S[0]) && myMap.Contains(S[1])) {
890 E [0] = TopoDS::Edge(myMap.FindFromKey(S[0]).First());
891 E [1] = TopoDS::Edge(myMap.FindFromKey(S[1]).First());
7fd59977 892 }
893 else continue;
894
895 //-----------------------------------------------------------
0d969553
Y		 896 // Construction of vertices corresponding to the node of the map.
897 // if they are on the offset.
7fd59977 898 //-----------------------------------------------------------
899 TopoDS_Vertex VS,VE;
900 Handle(MAT_Node) Node1, Node2;
901
902 if (Reverse) {
903 Node1 = CurrentArc->SecondNode();
904 Node2 = CurrentArc->FirstNode();
905 }
906 else {
907 Node1 = CurrentArc->FirstNode();
908 Node2 = CurrentArc->SecondNode();
909 }
873c119f 910
7fd59977 911 Standard_Boolean StartOnEdge = 0, EndOnEdge = 0;
873c119f 912
7fd59977 913 if (!Node1->Infinite()) {
914 gp_Pnt2d aLocalPnt2d = Locus.GeomElt(Node1);
915 StartOnEdge = VertexFromNode(Node1, myOffset, aLocalPnt2d ,MapNodeVertex,VS);
873c119f 916 // StartOnEdge = VertexFromNode(Node1, myOffset, Locus.GeomElt(Node1),
917 // MapNodeVertex,VS);
7fd59977 918 }
919 if (!Node2->Infinite()) {
920 gp_Pnt2d aLocalPnt2d = Locus.GeomElt(Node2) ;
921 EndOnEdge = VertexFromNode(Node2, myOffset, aLocalPnt2d ,MapNodeVertex,VE);
873c119f 922 // EndOnEdge = VertexFromNode(Node2, myOffset, Locus.GeomElt(Node2),
923 // MapNodeVertex,VE);
7fd59977 924 }
925
9eb68d38 926 if (myJoinType == GeomAbs_Intersection)
927 StartOnEdge = EndOnEdge = 0;
928
7fd59977 929 //---------------------------------------------
0d969553 930 // Construction of geometries.
7fd59977 931 //---------------------------------------------
932 BRepFill_TrimEdgeTool Trim (Bisec,
873c119f 933 Locus.GeomElt(CurrentArc->FirstElement()),
934 Locus.GeomElt(CurrentArc->SecondElement()),
935 myOffset);
7fd59977 936
937 //-----------------------------------------------------------
0d969553 938 // Construction of vertices on edges parallel to the spine.
7fd59977 939 //-----------------------------------------------------------
940
9eb68d38 941 Trim.IntersectWith(E [0], E [1], myJoinType, Params);
7fd59977 942
943 for (Standard_Integer s = 1; s <= Params.Length(); s++) {
944 TopoDS_Vertex VC;
945 myBuilder.MakeVertex (VC);
946 gp_Pnt2d P2 = Bisec.Value()->Value(Params.Value(s).X());
947 gp_Pnt PVC(P2.X(),P2.Y(),0.);
948
949 myBuilder.UpdateVertex(VC,PVC,Precision::Confusion());
950 Vertices.Append(VC);
951 }
952 if (StartOnEdge) {
953 Standard_Boolean Start = 1;
954 Trim.AddOrConfuse(Start, E[0], E[1], Params);
955 if (Params.Length() == Vertices.Length())
873c119f 956 Vertices.SetValue(1,VS);
7fd59977 957
958 else
873c119f 959 // the point was not found by IntersectWith
960 Vertices.Prepend(VS);
7fd59977 961 }
962 if (EndOnEdge) {
963 Standard_Boolean Start = 0;
964 Trim.AddOrConfuse(Start, E[0], E[1], Params);
965 if (Params.Length() == Vertices.Length())
873c119f 966 Vertices.SetValue(Params.Length(),VE);
7fd59977 967
968 else
873c119f 969 // the point was not found by IntersectWith
970 Vertices.Append(VE);
7fd59977 971 }
972
973 //------------------------------------------------------------
0d969553
Y		 974 // Update Detromp.
975 // Detromp allows to remove vertices on the offset
976 // corresponding to tangency zones
977 // Detromp ranks the vertices that limit
978 // the parts of the bissectrices located between the spine and the
979 // offset.
7fd59977 980 //------------------------------------------------------------
981 if (!Detromp.IsBound(S[0])) Detromp.Bind(S[0],EmptyList);
982 if (!Detromp.IsBound(S[1])) Detromp.Bind(S[1],EmptyList);
983
984
c19dd45e 985 UpdateDetromp (Detromp, S[0], S[1], Vertices, Params,
873c119f 986 Bisec, StartOnEdge, EndOnEdge, Trim);
7fd59977 987 //----------------------------------------------
0d969553
Y		 988 // Storage of vertices on parallel edges.
989 // fill MapBis and MapVerPar.
7fd59977 990 //----------------------------------------------
991 if (!Vertices.IsEmpty()) {
992 for (k = 0; k <= 1; k++) {
873c119f 993 if (!MapBis.IsBound(E[k])) {
994 MapBis .Bind(E[k],EmptySeq);
995 MapVerPar.Bind(E[k],EmptySeqOfReal);
996 }
997 for (Standard_Integer ii = 1; ii <= Vertices.Length(); ii++) {
998 MapBis (E[k]).Append(Vertices.Value(ii));
999 if (k == 0) MapVerPar (E[k]).Append(Params.Value(ii).Y());
1000 else MapVerPar (E[k]).Append(Params.Value(ii).Z());
1001 }
7fd59977 1002 }
1003 }
1004 else {
1005 //------------------------------------------------------------
0d969553
Y		 1006 // FOR COMPLETE CIRCLES. the parallel line can be contained
1007 // in the zone without intersection with the border
1008 // no intersection
1009 // if myoffset is < distance of nodes the parallel can be valid.
7fd59977 1010 //-------------------------------------------------------------
1011 for (k = 0; k <= 1; k++) {
873c119f 1012 if (!MapBis.IsBound(E[k])) {
1013 if (Node1->Distance() > myOffset && Node2->Distance() > myOffset) {
1014 MapBis .Bind(E[k],EmptySeq);
1015 MapVerPar.Bind(E[k],EmptySeqOfReal);
1016 }
1017 }
7fd59977 1018 }
1019 }
1020 }
873c119f 1021
1022#ifdef OCCT_DEBUG
1896126e 1023#ifdef DRAW
7fd59977 1024 if (AffichEdge) {
0d969553 1025 cout << " End Construction of vertices on offsets"<<endl;
7fd59977 1026 }
873c119f 1027#endif
7fd59977 1028#endif
1029
1030 //----------------------------------
0d969553 1031 // Construction of parallel edges.
7fd59977 1032 //----------------------------------
1033 TopTools_IndexedDataMapOfShapeShape MapVV;
1034
1035 TopoDS_Shape CurrentSpine;
1036
86b3805f 1037 //BRepFill_DataMapIteratorOfDataMapOfOrientedShapeListOfShape ite1;
7fd59977 1038
86b3805f
J		 1039 for (j = 1; j <= myMap.Extent(); j++) {
1040 CurrentSpine = myMap.FindKey(j);
1041 CurrentEdge = TopoDS::Edge(myMap(j).First());
7fd59977 1042
86b3805f 1043 myMap(j).Clear();
7fd59977 1044 if (MapBis.IsBound(CurrentEdge)) {
1045 TopTools_SequenceOfShape S;
1046 if (!MapBis(CurrentEdge).IsEmpty()) {
6a442250 1047 Standard_Integer IndOfE = 0;
1048 if (myIsOpenResult)
1049 {
1050 if (j == 1)
1051 IndOfE = 1;
1052 else if (j == myMap.Extent())
1053 IndOfE = -1;
1054 }
873c119f 1055 TrimEdge (CurrentEdge,
1056 CurrentSpine,
1057 mySpine,
1058 Detromp (CurrentSpine),
1059 MapBis (CurrentEdge) ,
1060 MapVerPar(CurrentEdge) ,
1061 S, MapVV, IndOfE);
1062 for ( k = 1; k <= S.Length(); k++) {
1063 myMap(j).Append(S.Value(k));
1064 }
7fd59977 1065 }
1066 else {
873c119f 1067 //-----------------
1068 // Complete circles
1069 //-----------------
1070 myMap(j).Append(CurrentEdge);
7fd59977 1071 }
1072 }
1073 }
873c119f 1074
7fd59977 1075 Standard_Integer ind;
1076 for (ind = 1; ind <= MapVV.Extent(); ind++)
873c119f 1077 {
1078 TopoDS_Vertex OldV = TopoDS::Vertex(MapVV.FindKey(ind));
1079 TopoDS_Vertex NewV = TopoDS::Vertex(MapVV(ind));
1080 gp_Pnt P1 = BRep_Tool::Pnt(OldV);
1081 gp_Pnt P2 = BRep_Tool::Pnt(NewV);
1082 myBuilder.UpdateVertex(NewV, P1.Distance(P2));
1083 TopTools_ListOfShape LV;
1084 LV.Append( NewV.Oriented(TopAbs_FORWARD) );
1085 BRepTools_Substitution aSubst;
1086 aSubst.Substitute( OldV, LV );
1087 for (j = 1; j <= myMap.Extent(); j++)
7fd59977 1088 {
873c119f 1089 TopTools_ListIteratorOfListOfShape itl(myMap(j));
1090 for (; itl.More(); itl.Next())
1091 {
1092 aSubst.Build(itl.Value());
1093 if (aSubst.IsCopied(itl.Value()))
1094 {
1095 const TopTools_ListOfShape& listSh = aSubst.Copy(itl.Value());
1096 TopAbs_Orientation SaveOr = itl.Value().Orientation();
1097 itl.Value() = listSh.First();
1098 itl.Value().Orientation(SaveOr);
1099 }
1100 }
7fd59977 1101 }
873c119f 1102 }
7fd59977 1103
1104 //----------------------------------
0d969553 1105 // Construction of offset wires.
7fd59977 1106 //----------------------------------
1107 MakeWires ();
1108
0d969553 1109 // Update vertices ( Constructed in the plane Z = 0) !!!
7fd59977 1110 TopTools_MapOfShape MapVertex;
1111 for ( TopExp_Explorer exp(myShape,TopAbs_VERTEX); exp.More(); exp.Next()) {
1112 TopoDS_Vertex V = TopoDS::Vertex(exp.Current());
1113 if ( MapVertex.Add(V)) {
1114 gp_Pnt P = BRep_Tool::Pnt(V);
1115 P = RefPlane->Value(P.X(),P.Y());
1116 myBuilder.UpdateVertex(V,P, Precision::Confusion());
1117 }
1118 }
1119
0d969553 1120 // Construction of curves 3d.
7fd59977 1121 BRepLib::BuildCurves3d(myShape);
1122 MapVertex.Clear();
1123 TopExp_Explorer Explo( myShape, TopAbs_EDGE );
1124 for (; Explo.More(); Explo.Next())
873c119f 1125 {
1126 TopoDS_Edge E = TopoDS::Edge( Explo.Current() );
1127 TopoDS_Vertex V1, V2;
1128 TopExp::Vertices( E, V1, V2 );
1129 Handle(BRep_TVertex)& TV1 = *((Handle(BRep_TVertex)*) &(V1).TShape());
1130 Handle(BRep_TVertex)& TV2 = *((Handle(BRep_TVertex)*) &(V2).TShape());
1131
1132 TopLoc_Location loc;
1133 Standard_Real f, l;
1134 Handle( Geom_Curve ) theCurve = BRep_Tool::Curve( E, loc, f, l );
1135 theCurve = Handle( Geom_Curve )::DownCast( theCurve->Copy() );
1136 theCurve->Transform( loc.Transformation() );
1137 gp_Pnt f3d = theCurve->Value( f );
1138 gp_Pnt l3d = theCurve->Value( l );
1139
1140 Standard_Real dist1, dist2;
1141 dist1 = f3d.Distance( TV1->Pnt() );
1142 dist2 = l3d.Distance( TV2->Pnt() );
1143 if (! MapVertex.Contains( V1 ))
7fd59977 1144 {
7fd59977 1145
873c119f 1146 TV1->Pnt( f3d );
1147 MapVertex.Add( V1 );
7fd59977 1148 }
873c119f 1149 else
1150 TV1->UpdateTolerance( 1.5*dist1 );
1151 if (! MapVertex.Contains( V2 ))
1152 {
1153 TV2->Pnt( l3d );
1154 MapVertex.Add( V2 );
1155 }
1156 else
1157 TV2->UpdateTolerance( 1.5*dist2 );
1158 }
7fd59977 1159
1867dc32 1160 if (!myIsOpenResult)
1161 FixHoles();
7fd59977 1162
1163 myIsDone = Standard_True;
1164}
1165
1166
1167//=======================================================================
1168//function : Generated
1169//purpose :
1170//=======================================================================
1171
86b3805f 1172BRepFill_IndexedDataMapOfOrientedShapeListOfShape&
873c119f 1173 BRepFill_OffsetWire::Generated()
7fd59977 1174{
1175 return myMap;
1176}
1177
1178
1179//=======================================================================
1180//function : PrepareSpine
1181//purpose :
1182//=======================================================================
1183
1184void BRepFill_OffsetWire::PrepareSpine()
1185{
1186 BRep_Builder B;
1187 TopTools_ListOfShape Cuts;
1188 TopTools_ListIteratorOfListOfShape IteCuts;
1189 TopoDS_Vertex V1,V2;
1190
1191 myWorkSpine.Nullify();
1192 myMapSpine.Clear();
1193
1194 TopLoc_Location L;
1195 const Handle(Geom_Surface)& S = BRep_Tool::Surface (mySpine,L);
1196 Standard_Real TolF = BRep_Tool::Tolerance(mySpine);
1197 B.MakeFace(myWorkSpine,S,L,TolF);
1198
1199 for (TopoDS_Iterator IteF(mySpine) ; IteF.More(); IteF.Next()) {
1200
1201 TopoDS_Wire NW;
1202 B.MakeWire (NW);
1203
873c119f 1204 // Modified by Sergey KHROMOV - Thu Nov 16 17:29:55 2000 Begin
7fd59977 1205 Standard_Integer ForcedCut = 0;
1206 Standard_Integer nbResEdges = -1;
1207 TopTools_IndexedMapOfShape EdgeMap;
1208
1209 TopExp::MapShapes(IteF.Value(), TopAbs_EDGE, EdgeMap);
1210 Standard_Integer nbEdges = EdgeMap.Extent();
1211
6a442250 1212 if (nbEdges == 1 && !myIsOpenResult) //in case of open wire there's no need to do it
7fd59977 1213 ForcedCut = 2;
873c119f 1214 // Modified by Sergey KHROMOV - Thu Nov 16 17:29:48 2000 End
7fd59977 1215
1216 for (TopoDS_Iterator IteW(IteF.Value()); IteW.More(); IteW.Next()) {
1217
1218 const TopoDS_Edge& E = TopoDS::Edge(IteW.Value());
1219 EdgeVertices(E,V1,V2);
1220 myMapSpine.Bind(V1,V1);
1221 myMapSpine.Bind(V2,V2);
1222 Cuts.Clear();
1223
0d969553 1224 // Cut
7fd59977 1225 TopoDS_Shape aLocalShape = E.Oriented(TopAbs_FORWARD);
873c119f 1226 // Modified by Sergey KHROMOV - Thu Nov 16 17:29:29 2000 Begin
7fd59977 1227 if (nbEdges == 2 && nbResEdges == 0)
873c119f 1228 ForcedCut = 1;
1229 // Modified by Sergey KHROMOV - Thu Nov 16 17:29:33 2000 End
7fd59977 1230 nbResEdges = CutEdge (TopoDS::Edge(aLocalShape), mySpine, ForcedCut, Cuts);
1231
1232 if (Cuts.IsEmpty()) {
873c119f 1233 B.Add(NW,E);
1234 myMapSpine.Bind(E,E);
7fd59977 1235 }
1236 else {
873c119f 1237 for (IteCuts.Initialize(Cuts); IteCuts.More(); IteCuts.Next()) {
1238 TopoDS_Edge NE = TopoDS::Edge(IteCuts.Value());
1239 NE.Orientation(E.Orientation());
1240 B.Add(NW,NE);
1241 myMapSpine.Bind(NE,E);
1242 EdgeVertices(NE,V1,V2);
1243 if (!myMapSpine.IsBound(V1)) myMapSpine.Bind(V1,E);
1244 if (!myMapSpine.IsBound(V2)) myMapSpine.Bind(V2,E);
1245 }
7fd59977 1246 }
1247 }
873c119f 1248 // Modified by Sergey KHROMOV - Thu Mar 7 09:17:41 2002 Begin
7fd59977 1249 TopoDS_Vertex aV1;
1250 TopoDS_Vertex aV2;
1251
1252 TopExp::Vertices(NW, aV1, aV2);
1253
1254 NW.Closed(aV1.IsSame(aV2));
873c119f 1255
1256 // Modified by Sergey KHROMOV - Thu Mar 7 09:17:43 2002 End
7fd59977 1257 B.Add(myWorkSpine, NW);
1258 }
1259
873c119f 1260#ifdef OCCT_DEBUG
7fd59977 1261#ifdef DRAW
1262 if ( AffichEdge) {
1896126e 1263 DBRep::Set("WS",myWorkSpine);
873c119f 1264 DBRep::Set("MS",mySpine);
1265 BRepTools::Write(myWorkSpine, "WS");
1266 BRepTools::Write(mySpine, "MS");
7fd59977 1267 }
1268#endif
873c119f 1269#endif
7fd59977 1270
1271}
1272
c19dd45e 1273//=======================================================================
1274//function : UpdateDetromp
1275//purpose : For each interval on bissectrice defined by parameters
1276// test if the medium point is at a distance > offset
1277// in this case vertices corresponding to the extremities of the interval
1278// are ranked in the proofing.
1279// => If the same vertex appears in the proofing, the
1280// border of the zone of proximity is tangent to the offset .
1281//=======================================================================
1282
1283void BRepFill_OffsetWire::UpdateDetromp (BRepFill_DataMapOfOrientedShapeListOfShape& Detromp,
1284 const TopoDS_Shape& Shape1,
1285 const TopoDS_Shape& Shape2,
1286 const TopTools_SequenceOfShape& Vertices,
1287 const TColgp_SequenceOfPnt& Params,
1288 const Bisector_Bisec& Bisec,
1289 const Standard_Boolean SOnE,
1290 const Standard_Boolean EOnE,
1291 const BRepFill_TrimEdgeTool& Trim) const
1292{
c19dd45e 1293 Standard_Integer ii = 1;
1294 Standard_Real U1,U2;
1295 TopoDS_Vertex V1,V2;
1296
5b111128 1297 Handle(Geom2d_Curve) Bis (Bisec.Value());
c19dd45e 1298
1299 U1 = Bis->FirstParameter();
1300
1301 if (SOnE) {
1302 // the first point of the bissectrice is on the offset
1303 V1 = TopoDS::Vertex(Vertices.Value(ii));
1304 ii++;
1305 }
1306
1307 while (ii <= Vertices.Length()) {
1308 U2 = Params.Value(ii).X();
1309 V2 = TopoDS::Vertex(Vertices.Value(ii));
1310
a791eb69 1311 gp_Pnt2d P = Bis->Value((U2 + U1)*0.5);
1312 Standard_Boolean IsP_inside = Standard_True;
873c119f 1313 if ((myJoinType != GeomAbs_Intersection) || EOnE)
a791eb69 1314 IsP_inside = Trim.IsInside(P);
1315 if (!IsP_inside) {
c19dd45e 1316 if (!V1.IsNull()) {
1317 Detromp(Shape1).Append(V1);
1318 Detromp(Shape2).Append(V1);
1319 }
1320 Detromp(Shape1).Append(V2);
1321 Detromp(Shape2).Append(V2);
1322 }
1323 U1 = U2;
1324 V1 = V2;
1325 ii ++;
1326 }
1327
1328 // test medium point between the last parameter and the end of the bissectrice.
1329 U2 = Bis->LastParameter();
1330 if (!EOnE) {
1331 if (!Precision::IsInfinite(U2)) {
1332 gp_Pnt2d P = Bis->Value((U2 + U1)*0.5);
a791eb69 1333 Standard_Boolean IsP_inside = Standard_False;
1334 if (myJoinType == GeomAbs_Arc)
1335 IsP_inside = Trim.IsInside(P);
1336 if (!IsP_inside) {
873c119f 1337 if (!V1.IsNull()) {
1338 Detromp(Shape1).Append(V1);
1339 Detromp(Shape2).Append(V1);
1340 }
c19dd45e 1341 }
1342 }
1343 else {
1344 if (!V1.IsNull()) {
873c119f 1345 Detromp(Shape1).Append(V1);
1346 Detromp(Shape2).Append(V1);
c19dd45e 1347 }
1348 }
1349 }
873c119f 1350 //else if(myJoinType != GeomAbs_Arc)
1351 //{
1352 // if (!V1.IsNull()) {
1353 // Detromp(Shape1).Append(V1);
1354 // Detromp(Shape2).Append(V1);
1355 // }
1356 //}
c19dd45e 1357}
1358
7fd59977 1359//=======================================================================
1360//function : MakeWires
1361//purpose :
1362//=======================================================================
1363
1364void BRepFill_OffsetWire::MakeWires()
1365{
1366 //--------------------------------------------------------
0d969553 1367 // creation of a single list of created parallel edges.
7fd59977 1368 //--------------------------------------------------------
1369 TopTools_SequenceOfShape TheEdges;
1370 TopTools_ListOfShape TheWires;
1371 TopTools_ListIteratorOfListOfShape itl;
86b3805f
J		 1372 //BRepFill_DataMapIteratorOfDataMapOfOrientedShapeListOfShape ite;
1373 TopTools_IndexedDataMapOfShapeListOfShape MVE;
1374 //TopTools_DataMapIteratorOfDataMapOfShapeListOfShape MVEit;
7fd59977 1375 TopoDS_Vertex V1,V2,VF,CV;
86b3805f 1376 Standard_Integer i;
7fd59977 1377
86b3805f
J		 1378 for (i = 1; i <= myMap.Extent(); i++) {
1379 for (itl.Initialize(myMap(i)); itl.More(); itl.Next()) {
7fd59977 1380 const TopoDS_Edge& E = TopoDS::Edge(itl.Value());
1381 TopExp::Vertices (E,V1,V2);
1382 if (V1.IsSame(V2) && IsSmallClosedEdge(E, V1))
873c119f 1383 continue; //remove small closed edges
7642e2d0 1384 if (!CheckSmallParamOnEdge(E))
1385 continue;
86b3805f 1386 if (!MVE.Contains(V1)) {
873c119f 1387 TopTools_ListOfShape empty;
1388 MVE.Add(V1,empty);
7fd59977 1389 }
86b3805f
J		 1390 MVE.ChangeFromKey(V1).Append(E);
1391 if (!MVE.Contains(V2)) {
873c119f 1392 TopTools_ListOfShape empty;
1393 MVE.Add(V2,empty);
7fd59977 1394 }
86b3805f 1395 MVE.ChangeFromKey(V2).Append(E);
7fd59977 1396 }
1397 }
1398
1399 //--------------------------------------
0d969553 1400 // Creation of parallel wires.
7fd59977 1401 //--------------------------------------
1402 BRep_Builder B;
1403
873c119f 1404
1405 // Standard_Integer NbEdges;
1406 // Standard_Boolean NewWire = Standard_True;
1407 // Standard_Boolean AddEdge = Standard_False;
7fd59977 1408
1409 TopoDS_Wire NW;
1410 Standard_Boolean End;
1411 TopoDS_Edge CE;
1412
1413 while (!MVE.IsEmpty()) {
1414 B.MakeWire(NW);
1415
86b3805f
J		 1416 //MVEit.Initialize(MVE);
1417 for (i = 1; i <= MVE.Extent(); i++)
1418 if(MVE(i).Extent() == 1)
1419 break;
7fd59977 1420
86b3805f
J		 1421 //if(!MVEit.More()) MVEit.Initialize(MVE);
1422 if (i > MVE.Extent())
1423 i = 1;
7fd59977 1424
86b3805f
J		 1425 CV = VF = TopoDS::Vertex(MVE.FindKey(i));
1426 CE = TopoDS::Edge(MVE(i).First());
7fd59977 1427 End = Standard_False;
1867dc32 1428 MVE.ChangeFromKey(CV).RemoveFirst();
1429
1430 if (myIsOpenResult && MVE.FindFromKey(CV).IsEmpty())
1431 {
1432 //MVE.UnBind(CV);
1433 TopoDS_Shape LastShape = MVE.FindKey(MVE.Extent());
1434 TopTools_ListOfShape LastList;
1435 LastList.Append(MVE(MVE.Extent()));
1436 MVE.RemoveLast();
1437 if (MVE.FindIndex(CV) != 0)
1438 MVE.Substitute(MVE.FindIndex(CV), LastShape, LastList);
1439 }
1440
7fd59977 1441
873c119f 1442 // Modified by Sergey KHROMOV - Thu Mar 14 11:29:59 2002 Begin
7fd59977 1443 Standard_Boolean isClosed = Standard_False;
873c119f 1444
1445 // Modified by Sergey KHROMOV - Thu Mar 14 11:30:00 2002 End
7fd59977 1446
1447 while(!End) {
1448 //-------------------------------
0d969553 1449 // Construction of a wire.
7fd59977 1450 //-------------------------------
1451 TopExp::Vertices(CE,V1,V2);
1452 if (!CV.IsSame(V1)) CV = V1; else CV = V2;
1453
1454 B.Add (NW,CE);
1455
86b3805f 1456 if (VF.IsSame(CV) || !MVE.Contains(CV)) {
873c119f 1457 // Modified by Sergey KHROMOV - Thu Mar 14 11:30:14 2002 Begin
1458 isClosed = VF.IsSame(CV);
1459 // Modified by Sergey KHROMOV - Thu Mar 14 11:30:15 2002 End
1460 End = Standard_True;
1461 //MVE.UnBind(VF);
86b3805f
J		 1462 TopoDS_Shape LastShape = MVE.FindKey(MVE.Extent());
1463 TopTools_ListOfShape LastList;
1464 LastList.Append(MVE(MVE.Extent()));
1465 MVE.RemoveLast();
1466 if (MVE.FindIndex(VF) != 0)
1467 MVE.Substitute(MVE.FindIndex(VF), LastShape, LastList);
7fd59977 1468 }
1469
1470 if (!End) {
873c119f 1471 if (MVE.FindFromKey(CV).Extent() > 2) {
1472 //cout <<"vertex on more that 2 edges in a face."<<endl;
1473 }
1474 for ( itl.Initialize(MVE.FindFromKey(CV)); itl.More(); itl.Next()) {
1475 if (itl.Value().IsSame(CE)) {
1476 MVE.ChangeFromKey(CV).Remove(itl);
1477 break;
1478 }
1479 }
1480 if (!MVE.FindFromKey(CV).IsEmpty()) {
1481 CE = TopoDS::Edge(MVE.FindFromKey(CV).First());
1482 MVE.ChangeFromKey(CV).RemoveFirst();
1483 }
1867dc32 1484 else if (myIsOpenResult)//CV was a vertex with one edge
1485 End = Standard_True;
1486
873c119f 1487 if (MVE.FindFromKey(CV).IsEmpty())
86b3805f
J		 1488 {
1489 //MVE.UnBind(CV);
1490 TopoDS_Shape LastShape = MVE.FindKey(MVE.Extent());
1491 TopTools_ListOfShape LastList;
1492 LastList.Append(MVE(MVE.Extent()));
1493 MVE.RemoveLast();
1494 if (MVE.FindIndex(CV) != 0)
1495 MVE.Substitute(MVE.FindIndex(CV), LastShape, LastList);
1496 }
7fd59977 1497 }
1498 }
873c119f 1499 // Modified by Sergey KHROMOV - Thu Mar 14 11:29:31 2002 Begin
1500 // NW.Closed(Standard_True);
7fd59977 1501 NW.Closed(isClosed);
873c119f 1502 // Modified by Sergey KHROMOV - Thu Mar 14 11:29:37 2002 End
7fd59977 1503 TheWires.Append(NW);
1504 }
1505
0d969553
Y		 1506 // update myShape :
1507 // -- if only one wire : myShape is a Wire
1508 // -- if several wires : myShape is a Compound.
7fd59977 1509 if ( TheWires.Extent() == 1) {
1510 myShape = TheWires.First();
1511 }
1512 else {
1513 TopoDS_Compound R;
1514 B.MakeCompound(R);
1515 TopTools_ListIteratorOfListOfShape it(TheWires);
1516 for ( ; it.More(); it.Next()) {
1517 B.Add(R, it.Value());
1518 }
1519 myShape = R;
1520 }
1521
1522}
1523
1524//=======================================================================
1525//function : FixHoles
1526//purpose :
1527//=======================================================================
1528
1529void BRepFill_OffsetWire::FixHoles()
1530{
1531 TopTools_SequenceOfShape ClosedWires, UnclosedWires, IsolatedWires;
1532
1533 Standard_Real MaxTol = 0.;
1534 Standard_Integer i;
1535 BRep_Builder BB;
1536
1537 TopExp_Explorer Explo( mySpine, TopAbs_VERTEX );
1538 for (; Explo.More(); Explo.Next())
91bb31f3 1539 {
1540 const TopoDS_Vertex& aVertex = TopoDS::Vertex( Explo.Current() );
1541 Standard_Real Tol = BRep_Tool::Tolerance(aVertex);
1542 if (Tol > MaxTol)
1543 MaxTol = Tol;
1544 }
7fd59977 1545 MaxTol *= 100.;
1546
1547 Explo.Init( myShape, TopAbs_WIRE );
1548 for (; Explo.More(); Explo.Next())
91bb31f3 1549 {
1550 TopoDS_Shape aWire = Explo.Current();
1551 // Remove duplicated edges
1552 TopTools_DataMapOfShapeListOfShape EEmap;
1553 TopoDS_Iterator it( aWire );
1554 for (; it.More(); it.Next())
7fd59977 1555 {
91bb31f3 1556 const TopoDS_Shape& anEdge = it.Value();
1557 if (! EEmap.IsBound( anEdge ))
1558 {
1559 TopTools_ListOfShape LE;
1560 EEmap.Bind( anEdge, LE );
1561 }
7fd59977 1562 else
91bb31f3 1563 EEmap(anEdge).Append( anEdge );
7fd59977 1564 }
91bb31f3 1565 aWire.Free( Standard_True );
1566 TopTools_DataMapIteratorOfDataMapOfShapeListOfShape mapit( EEmap );
1567 for (; mapit.More(); mapit.Next())
1568 {
1569 const TopTools_ListOfShape& LE = mapit.Value();
1570 TopTools_ListIteratorOfListOfShape itl( LE );
1571 for (; itl.More(); itl.Next())
1572 BB.Remove( aWire, itl.Value() );
1573 }
1574 // Sorting
1575 if (aWire.Closed())
1576 ClosedWires.Append( aWire );
1577 else
1578 UnclosedWires.Append( aWire );
1579 }
1580
7fd59977 1581 while (!UnclosedWires.IsEmpty())
91bb31f3 1582 {
1583 TopoDS_Wire& Base = TopoDS::Wire( UnclosedWires(1) );
1584 TopoDS_Vertex Vf, Vl;
1585 TopExp::Vertices( Base, Vf, Vl );
1586 if(Vf.IsNull() || Vl.IsNull())
873c119f 1587 {
91bb31f3 1588 Standard_Failure::Raise("BRepFill_OffsetWire::FixHoles(): Wrong wire.");
873c119f 1589#ifdef OCCT_DEBUG
1590 BRepTools::Write(Base, "Base");
1591#endif
1592 }
91bb31f3 1593 gp_Pnt Pf, Pl;
1594 Pf = BRep_Tool::Pnt(Vf);
1595 Pl = BRep_Tool::Pnt(Vl);
1596 Standard_Real DistF = RealLast(), DistL = RealLast();
1232a766 1597 Standard_Integer IndexF = 0, IndexL = 0;
91bb31f3 1598 Standard_Boolean IsFirstF = Standard_False, IsFirstL = Standard_False;
1599 for (Standard_Integer i = 2; i <= UnclosedWires.Length(); i++)
7fd59977 1600 {
91bb31f3 1601 TopoDS_Wire aWire = TopoDS::Wire( UnclosedWires(i) );
1602 TopoDS_Vertex V1, V2;
1603 TopExp::Vertices( aWire, V1, V2 );
1604
1605 if(V1.IsNull() || V2.IsNull())
873c119f 1606 {
ab87e6fc 1607 Standard_Failure::Raise("BRepFill_OffsetWire::FixHoles(): Wrong wire.");
873c119f 1608#ifdef OCCT_DEBUG
1609 BRepTools::Write(Base, "Base");
1610 char name[128];
1611 sprintf(name,"Wire_%d",i);
1612 BRepTools::Write(aWire, name);
1613#endif
1614 }
91bb31f3 1615
1616 gp_Pnt P1, P2;
1617 P1 = BRep_Tool::Pnt(V1);
1618 P2 = BRep_Tool::Pnt(V2);
1619 Standard_Real dist = Pf.Distance( P1 );
1620 if (dist < DistF)
1621 {
1622 DistF = dist;
1623 IndexF = i;
1624 IsFirstF = Standard_True;
1625 }
1626 dist = Pf.Distance( P2 );
1627 if (dist < DistF)
1628 {
1629 DistF = dist;
1630 IndexF = i;
1631 IsFirstF = Standard_False;
1632 }
1633 dist = Pl.Distance( P1 );
1634 if (dist < DistL)
1635 {
1636 DistL = dist;
1637 IndexL = i;
1638 IsFirstL = Standard_True;
1639 }
1640 dist = Pl.Distance( P2 );
1641 if (dist < DistL)
1642 {
1643 DistL = dist;
1644 IndexL = i;
1645 IsFirstL = Standard_False;
1646 }
1647 }
1232a766 1648 if (DistF > MaxTol)
1649 IndexF = 0;
1650 if (DistL > MaxTol)
1651 IndexL = 0;
91bb31f3 1652 TopoDS_Wire theWire;
1653 TopoDS_Edge theEdge;
1654 TopoDS_Vertex theVertex;
1655 Standard_Real CommonTol;
1656 Standard_Boolean TryToClose = Standard_True;
1657 if (DistF <= MaxTol && DistL <= MaxTol && IndexF == IndexL && IsFirstF == IsFirstL)
1658 {
1659 if (DistF < DistL)
1660 {
1661 DistL = RealLast();
1662 IndexL++;
1663 }
1664 else
1665 {
1666 DistF = RealLast();
1667 IndexF++;
1668 }
1669 TryToClose = Standard_False;
1670 }
1671 if (DistF <= MaxTol)
1672 {
1673 theWire = TopoDS::Wire( UnclosedWires(IndexF) );
1674 TopoDS_Vertex V1, V2;
1675 TopExp::Vertices( theWire, V1, V2 );
1676 TopTools_IndexedDataMapOfShapeListOfShape VEmap;
1677 TopExp::MapShapesAndAncestors( theWire, TopAbs_VERTEX, TopAbs_EDGE, VEmap );
1678 theEdge = (IsFirstF)? TopoDS::Edge(VEmap.FindFromKey( V1 ).First()) :
1679 TopoDS::Edge(VEmap.FindFromKey( V2 ).First());
1680 TopoDS_Iterator it( theWire );
1681 for (; it.More(); it.Next())
1682 {
1683 TopoDS_Edge anEdge = TopoDS::Edge( it.Value() );
1684 if (IsFirstF) anEdge.Reverse();
1685 if (!anEdge.IsSame( theEdge ))
1686 BB.Add( Base, anEdge );
1687 }
1688 theVertex = (IsFirstF)? V1 : V2;
1689 CommonTol = Max( BRep_Tool::Tolerance(Vf), BRep_Tool::Tolerance(theVertex) );
1690 if (DistF <= CommonTol)
1691 {
1692 theEdge.Free( Standard_True );
1693 Vf.Orientation( theVertex.Orientation() );
1694 BB.Remove( theEdge, theVertex );
1695 BB.Add( theEdge, Vf );
1696 BB.UpdateVertex( Vf, CommonTol );
1697 if (IsFirstF) theEdge.Reverse();
1698 BB.Add( Base, theEdge );
1699 }
1700 else
1701 {
1702 if (IsFirstF) theEdge.Reverse();
1703 BB.Add( Base, theEdge );
1704 // Creating new edge from theVertex to Vf
1705 TopoDS_Edge NewEdge = BRepLib_MakeEdge( theVertex, Vf );
1706 BB.Add( Base, NewEdge );
1707 }
1708 }
1709 if (DistL <= MaxTol && IndexL != IndexF)
1710 {
1711 theWire = TopoDS::Wire( UnclosedWires(IndexL) );
1712 TopoDS_Vertex V1, V2;
1713 TopExp::Vertices( theWire, V1, V2 );
1714 TopTools_IndexedDataMapOfShapeListOfShape VEmap;
1715 TopExp::MapShapesAndAncestors( theWire, TopAbs_VERTEX, TopAbs_EDGE, VEmap );
1716 theEdge = (IsFirstL)? TopoDS::Edge(VEmap.FindFromKey( V1 ).First()) :
1717 TopoDS::Edge(VEmap.FindFromKey( V2 ).First());
1718 TopoDS_Iterator it( theWire );
1719 for (; it.More(); it.Next())
1720 {
1721 TopoDS_Edge anEdge = TopoDS::Edge( it.Value() );
1722 if (!IsFirstL) anEdge.Reverse();
1723 if (!anEdge.IsSame( theEdge ))
1724 BB.Add( Base, anEdge );
1725 }
1726 theVertex = (IsFirstL)? V1 : V2;
1727 CommonTol = Max( BRep_Tool::Tolerance(Vl), BRep_Tool::Tolerance(theVertex) );
1728 if (DistL <= CommonTol)
1729 {
1730 theEdge.Free( Standard_True );
1731 Vl.Orientation( theVertex.Orientation() );
1732 BB.Remove( theEdge, theVertex );
1733 BB.Add( theEdge, Vl );
1734 BB.UpdateVertex( Vl, CommonTol );
1735 if (!IsFirstL) theEdge.Reverse();
1736 BB.Add( Base, theEdge );
1737 }
1738 else
1739 {
1740 if (!IsFirstL) theEdge.Reverse();
1741 BB.Add( Base, theEdge );
1742 // Creating new edge from Vl to theVertex
1743 TopoDS_Edge NewEdge = BRepLib_MakeEdge( Vl, theVertex );
1744 BB.Add( Base, NewEdge );
1745 }
1746 }
1747 // Check if it is possible to close resulting wire
1748 if (TryToClose)
1749 {
1750 TopExp::Vertices( Base, Vf, Vl );
1751 CommonTol = Max( BRep_Tool::Tolerance(Vf), BRep_Tool::Tolerance(Vl) );
1752 TopTools_IndexedDataMapOfShapeListOfShape VEmap;
1753 TopExp::MapShapesAndAncestors( Base, TopAbs_VERTEX, TopAbs_EDGE, VEmap );
1754 TopoDS_Edge Efirst, Elast;
1755 Efirst = TopoDS::Edge(VEmap.FindFromKey( Vf ).First());
1756 Elast = TopoDS::Edge(VEmap.FindFromKey( Vl ).First());
7fd59977 1757 Pf = BRep_Tool::Pnt(Vf);
1758 Pl = BRep_Tool::Pnt(Vl);
91bb31f3 1759 Standard_Real Dist = Pf.Distance(Pl);
1760 if (Dist <= CommonTol)
1761 {
1762 Elast.Free( Standard_True );
1763 Vf.Orientation( Vl.Orientation() );
1764 BB.Remove( Elast, Vl );
1765 BB.Add( Elast, Vf );
1766 BB.UpdateVertex( Vf, CommonTol );
1767 Base.Closed( Standard_True );
1768 }
1769 else if (Dist <= MaxTol)
1770 {
1771 // Creating new edge from Vl to Vf
1772 TopoDS_Edge NewEdge = BRepLib_MakeEdge( Vf, Vl );
1773 BB.Add( Base, NewEdge );
1774 Base.Closed( Standard_True );
1775 }
7fd59977 1776 }
91bb31f3 1777 // Updating sequences ClosedWires and UnclosedWires
1778 if (DistF <= MaxTol)
1779 UnclosedWires.Remove( IndexF );
1780 if (DistL <= MaxTol && IndexL != IndexF)
7fd59977 1781 {
91bb31f3 1782 if (DistF <= MaxTol && IndexL > IndexF)
1783 IndexL--;
1784 UnclosedWires.Remove( IndexL );
7fd59977 1785 }
91bb31f3 1786 if (Base.Closed())
7fd59977 1787 {
91bb31f3 1788 ClosedWires.Append( Base );
1789 UnclosedWires.Remove( 1 );
7fd59977 1790 }
91bb31f3 1791 else if (DistF > MaxTol && DistL > MaxTol)
1792 {
1793 IsolatedWires.Append( Base );
1794 UnclosedWires.Remove( 1 );
1795 }
1796 }
1797
1798 // Updating myShape
1799 if (ClosedWires.Length() + IsolatedWires.Length() == 1)
1800 {
1801 if (!ClosedWires.IsEmpty())
1802 myShape = ClosedWires.First();
1803 else
1804 myShape = IsolatedWires.First();
1805 }
1806 else
1807 {
1808 TopoDS_Compound R;
1809 BB.MakeCompound( R );
1810 for (i = 1; i <= ClosedWires.Length(); i++)
1811 BB.Add( R, ClosedWires(i) );
1812 for (i = 1; i <= IsolatedWires.Length(); i++)
1813 BB.Add( R, IsolatedWires(i) );
1814 myShape = R;
1815 }
7fd59977 1816}
1817
1818//=======================================================================
1819//function : CutEdge
0d969553
Y		 1820//purpose : Cut edge at the extrema of curvatures and points of inflexion.
1821// So, closed circles are cut in two.
1822// If <Cuts> is empty, the edge is not modified.
1823// The first and the last vertex of the initial edge
1824// belong to the first and the last parts respectively.
7fd59977 1825//=======================================================================
1826Standard_Integer CutEdge (const TopoDS_Edge& E,
873c119f 1827 const TopoDS_Face& F,
1828 Standard_Integer ForceCut,
1829 TopTools_ListOfShape& Cuts)
7fd59977 1830{
1831 Cuts.Clear();
1832 MAT2d_CutCurve Cuter;
1833 TColGeom2d_SequenceOfCurve theCurves;
1834 Standard_Real f,l;
1835 Handle(Geom2d_Curve) C2d;
1836 Handle(Geom2d_TrimmedCurve) CT2d;
873c119f 1837 // Modified by Sergey KHROMOV - Wed Mar 6 17:36:25 2002 Begin
7fd59977 1838 Standard_Real aTol = BRep_Tool::Tolerance(E);
1839 Handle(Geom_Curve) aC;
873c119f 1840 // Modified by Sergey KHROMOV - Wed Mar 6 17:36:25 2002 End
7fd59977 1841
1842 TopoDS_Vertex V1,V2,VF,VL;
1843 TopExp::Vertices (E,V1,V2);
1844 BRep_Builder B;
1845
1846 C2d = BRep_Tool::CurveOnSurface (E,F,f,l);
873c119f 1847 // Modified by Sergey KHROMOV - Wed Mar 6 17:36:54 2002 Begin
7fd59977 1848 aC = BRep_Tool::Curve(E,f,l);
873c119f 1849 // Modified by Sergey KHROMOV - Wed Mar 6 17:36:54 2002 End
7fd59977 1850 CT2d = new Geom2d_TrimmedCurve(C2d,f,l);
1851 //if (E.Orientation() == TopAbs_REVERSED) CT2d->Reverse();
1852
1853 if (CT2d->BasisCurve()->IsKind(STANDARD_TYPE(Geom2d_Circle)) &&
873c119f 1854 ( Abs(f-l) >= M_PI) ) {
1855 return 0;
7fd59977 1856 }
1857
1858 //-------------------------
0d969553 1859 // Cut curve.
7fd59977 1860 //-------------------------
1861 Cuter.Perform(CT2d);
1862
873c119f 1863 // Modified by Sergey KHROMOV - Thu Nov 16 17:28:29 2000 Begin
7fd59977 1864 if (ForceCut == 0) {
1865 if (Cuter.UnModified()) {
873c119f 1866 //-----------------------------
1867 // edge not modified => return.
1868 //-----------------------------
7fd59977 1869 return 0;
1870 } else {
1871 for (Standard_Integer k = 1; k <= Cuter.NbCurves(); k++)
873c119f 1872 theCurves.Append(Cuter.Value(k));
7fd59977 1873 }
1874 } else if (ForceCut == 1) {
1875 if (Cuter.UnModified()) {
1876 CutCurve (CT2d, 2, theCurves);
1877 } else {
1878 for (Standard_Integer k = 1; k <= Cuter.NbCurves(); k++)
873c119f 1879
1880 theCurves.Append(Cuter.Value(k));
7fd59977 1881 }
1882 } else if (ForceCut == 2) {
1883 if (Cuter.UnModified()) {
1884 CutCurve (CT2d, 3, theCurves);
1885 } else {
1886 if (Cuter.NbCurves() == 2) {
873c119f 1887
1888 Handle(Geom2d_TrimmedCurve)CC = Cuter.Value(1);
1889
1890 if (CC->LastParameter() > (l+f)/2.) {
1891 CutCurve (CC, 2, theCurves);
1892 theCurves.Append(Cuter.Value(2));
1893 } else {
1894 theCurves.Append(CC);
1895 CutCurve (Cuter.Value(2), 2, theCurves);
1896 }
7fd59977 1897 } else {
873c119f 1898 for (Standard_Integer k = 1; k <= Cuter.NbCurves(); k++)
1899 theCurves.Append(Cuter.Value(k));
7fd59977 1900 }
1901 }
1902 }
873c119f 1903
1904 // Modified by Sergey KHROMOV - Thu Nov 16 17:28:37 2000 End
7fd59977 1905
1906 //--------------------------------------
0d969553 1907 // Creation of cut edges.
7fd59977 1908 //--------------------------------------
1909 VF = V1;
1910
1911 for (Standard_Integer k = 1; k <= theCurves.Length(); k++) {
1912
1913 Handle(Geom2d_TrimmedCurve)CC = Handle(Geom2d_TrimmedCurve)::DownCast(theCurves.Value(k));
1914
1915 if (k == theCurves.Length()) {VL = V2;}
1916 else {
873c119f 1917 // Modified by Sergey KHROMOV - Wed Mar 6 17:38:02 2002 Begin
7fd59977 1918 gp_Pnt P = aC->Value(CC->LastParameter());
1919
1920 VL = BRepLib_MakeVertex(P);
1921 B.UpdateVertex(VL, aTol);
873c119f 1922 // Modified by Sergey KHROMOV - Wed Mar 6 17:38:05 2002 End
7fd59977 1923 }
1924 TopoDS_Shape aLocalShape = E.EmptyCopied();
1925 TopoDS_Edge NE = TopoDS::Edge(aLocalShape);
873c119f 1926 // TopoDS_Edge NE = TopoDS::Edge(E.EmptyCopied());
7fd59977 1927 NE.Orientation(TopAbs_FORWARD);
1928 B.Add (NE,VF.Oriented(TopAbs_FORWARD));
1929 B.Add (NE,VL.Oriented(TopAbs_REVERSED));
1930 B.Range(NE,CC->FirstParameter(),CC->LastParameter());
1931 Cuts.Append(NE.Oriented(E.Orientation()));
1932 VF = VL;
1933 }
1934
1935 return theCurves.Length();
1936}
1937
1938// Modified by Sergey KHROMOV - Thu Nov 16 17:27:56 2000 Begin
1939//=======================================================================
1940//function : CutCurve
1941//purpose :
1942//=======================================================================
1943
1944void CutCurve (const Handle(Geom2d_TrimmedCurve)& C,
873c119f 1945 const Standard_Integer nbParts,
1946 TColGeom2d_SequenceOfCurve& theCurves)
7fd59977 1947{
1948 Handle(Geom2d_TrimmedCurve) TrimC;
1949 Standard_Real UF,UL,UC;
1950 Standard_Real Step;
1951 gp_Pnt2d PF,PL,PC;
1952 Standard_Real PTol = Precision::PConfusion()*10;
1953 Standard_Real Tol = Precision::Confusion()*10;
1954 Standard_Boolean YaCut = Standard_False;
1955
1956 UF = C->FirstParameter();
1957 UL = C->LastParameter ();
1958 PF = C->Value(UF);
1959 PL = C->Value(UL);
1960
1961 Step = (UL - UF)/nbParts;
1962
1963 for (Standard_Integer i = 1; i < nbParts; i++) {
1964
1965 UC = UF + i*Step;
1966 PC = C->Value(UC);
1967
1968 if (UC - UF > PTol && PC.Distance(PF) > Tol) {
1969 if ( UL - UC < PTol || PL.Distance(PC) < Tol)
873c119f 1970 continue;
7fd59977 1971
1972 TrimC = new Geom2d_TrimmedCurve(C,UF,UC);
1973 theCurves.Append(TrimC);
1974 UF = UC;
1975 PF = PC;
1976 YaCut = Standard_True;
1977 }
1978 }
1979 if (YaCut) {
1980 TrimC = new Geom2d_TrimmedCurve(C,UF,UL);
1981 theCurves.Append(TrimC);
1982 } else
1983 theCurves.Append(C);
1984}
1985// Modified by Sergey KHROMOV - Thu Nov 16 17:28:13 2000 End
1986
1987//=======================================================================
1988//function : MakeCircle
1989//purpose :
1990//=======================================================================
1991
1992void MakeCircle (const TopoDS_Edge& E,
873c119f 1993 const TopoDS_Vertex& V,
1994 const TopoDS_Face& F,
1995 const Standard_Real Offset,
1996 BRepFill_IndexedDataMapOfOrientedShapeListOfShape& Map,
1997 const Handle(Geom_Plane)& RefPlane)
7fd59977 1998{
0d969553 1999 // evaluate the Axis of the Circle.
7fd59977 2000 Standard_Real f,l;
2001 Handle(Geom2d_Curve) GC = BRep_Tool::CurveOnSurface(E,F,f,l);
2002 gp_Vec2d DX;
2003 gp_Pnt2d P;
2004
2005 if (E.Orientation() == TopAbs_FORWARD) {
2006 GC->D1(l,P,DX);
2007 DX.Reverse();
2008 }
2009 else GC->D1(f,P,DX);
2010
2011 gp_Ax2d Axis(P,gp_Dir2d(DX));
2012 Handle(Geom2d_Circle) Circ
2013 = new Geom2d_Circle(Axis, Abs(Offset), Offset < 0.);
2014
2015 // Bind the edges in my Map.
2016 TopoDS_Edge OE = BRepLib_MakeEdge(Circ, RefPlane);
2017 TopTools_ListOfShape LL;
2018
2019 LL.Append(OE);
86b3805f 2020 Map.Add(V,LL);
7fd59977 2021
873c119f 2022#ifdef OCCT_DEBUG
7fd59977 2023#ifdef DRAW
2024 if ( AffichGeom && !OE.IsNull()) {
1896126e 2025 char name[256];
7fd59977 2026 sprintf(name,"OFFSET_%d",++NbOFFSET);
2027 DBRep::Set(name,OE);
2028 }
2029#endif
873c119f 2030#endif
7fd59977 2031}
2032
2033//=======================================================================
2034//function : MakeOffset
2035//purpose :
2036//=======================================================================
2037
2038void MakeOffset (const TopoDS_Edge& E,
873c119f 2039 const TopoDS_Face& F,
2040 const Standard_Real Offset,
2041 BRepFill_IndexedDataMapOfOrientedShapeListOfShape& Map,
2042 const Handle(Geom_Plane)& RefPlane,
2043 const Standard_Boolean IsOpenResult,
c7806cb6 2044 const GeomAbs_JoinType theJoinType,
873c119f 2045 const TopoDS_Vertex * Ends)
7fd59977 2046{
2047 Standard_Real f,l;
2048 Standard_Real anOffset = Offset;
2049
2050 if (E.Orientation() == TopAbs_REVERSED) anOffset *= -1;
2051
2052 Handle(Geom2d_Curve) G2d = BRep_Tool::CurveOnSurface(E,F,f,l);
2053 Handle(Geom2d_Curve) G2dOC;
2054
6a442250 2055 Standard_Boolean ToExtendFirstPar = Standard_True;
2056 Standard_Boolean ToExtendLastPar = Standard_True;
2057 if (IsOpenResult)
2058 {
2059 TopoDS_Vertex V1, V2;
2060 TopExp::Vertices(E, V1, V2);
2061 if (V1.IsSame(Ends[0]) ||
873c119f 2062 V1.IsSame(Ends[1]))
6a442250 2063 ToExtendFirstPar = Standard_False;
2064 if (V2.IsSame(Ends[0]) ||
873c119f 2065 V2.IsSame(Ends[1]))
6a442250 2066 ToExtendLastPar = Standard_False;
2067 }
2068
7fd59977 2069 Geom2dAdaptor_Curve AC(G2d,f,l);
2070 if ( AC.GetType() == GeomAbs_Circle) {
0d969553
Y		 2071 // if the offset is greater otr equal to the radius and the side of the
2072 // concavity of the circle => edge null.
7fd59977 2073 gp_Circ2d C1(AC.Circle());
7fd59977 2074 gp_Ax22d axes( C1.Axis());
2075 gp_Dir2d Xd = axes.XDirection();
2076 gp_Dir2d Yd = axes.YDirection();
2077 Standard_Real Crossed = Xd.X()*Yd.Y()-Xd.Y()*Yd.X();
2078 Standard_Real Signe = ( Crossed > 0.) ? 1. : -1.;
2079
9ffd84ad 2080 if (anOffset*Signe < AC.Circle().Radius() - Precision::Confusion()) {
0d969553 2081
7fd59977 2082 Handle(Geom2dAdaptor_HCurve) AHC =
873c119f 2083 new Geom2dAdaptor_HCurve(G2d);
7fd59977 2084 Adaptor3d_OffsetCurve Off(AHC,-anOffset);
2085 Handle(Geom2d_Circle) CC = new Geom2d_Circle(Off.Circle());
2086
c6541a0c 2087 Standard_Real Delta = 2*M_PI - l + f;
c7806cb6 2088 if (theJoinType == GeomAbs_Arc)
2089 {
873c119f 2090 if (ToExtendFirstPar)
2091 f -= 0.2*Delta;
2092 if (ToExtendLastPar)
2093 l += 0.2*Delta;
c7806cb6 2094 }
2095 else //GeomAbs_Intersection
2096 {
2097 if (ToExtendFirstPar && ToExtendLastPar)
2098 {
2099 Standard_Real old_l = l;
2100 f = old_l + Delta/2.;
2101 l = f + 2*M_PI;
2102 }
2103 else if (ToExtendFirstPar)
2104 {
2105 f = l;
2106 l = f + 2*M_PI;
2107 }
2108 else if (ToExtendLastPar)
2109 {
2110 l = f + 2*M_PI;
2111 }
2112 }
7fd59977 2113 G2dOC = new Geom2d_TrimmedCurve(CC,f,l);
2114 }
2115 }
2116 else if (AC.GetType() == GeomAbs_Line) {
2117 Handle(Geom2dAdaptor_HCurve) AHC =
2118 new Geom2dAdaptor_HCurve(G2d);
2119 Adaptor3d_OffsetCurve Off(AHC,anOffset);
2120 Handle(Geom2d_Line) CC = new Geom2d_Line(Off.Line());
2121 Standard_Real Delta = (l - f);
6a442250 2122 if (ToExtendFirstPar)
c7806cb6 2123 {
2124 if (theJoinType == GeomAbs_Arc)
873c119f 2125 f -= Delta;
c7806cb6 2126 else //GeomAbs_Intersection
2127 f = -Precision::Infinite();
2128 }
6a442250 2129 if (ToExtendLastPar)
c7806cb6 2130 {
2131 if (theJoinType == GeomAbs_Arc)
873c119f 2132 l += Delta;
c7806cb6 2133 else //GeomAbs_Intersection
2134 l = Precision::Infinite();
2135 }
7fd59977 2136 G2dOC = new Geom2d_TrimmedCurve(CC,f,l);
2137 }
2138 else {
2139
2140 anOffset = -anOffset;
2141 Handle(Geom2d_TrimmedCurve) G2dT = new Geom2d_TrimmedCurve(G2d,f,l);
2142 G2dOC = new Geom2d_OffsetCurve( G2dT, anOffset);
2143
2144 }
2145
2146 // Bind the edges in my Map.
2147 if (!G2dOC.IsNull()) {
2148 TopoDS_Edge OE = BRepLib_MakeEdge(G2dOC, RefPlane);
2149 OE.Orientation(E.Orientation());
2150 TopTools_ListOfShape LL;
2151 LL.Append(OE);
86b3805f 2152 Map.Add(E,LL);
7fd59977 2153
873c119f 2154#ifdef OCCT_DEBUG
7fd59977 2155#ifdef DRAW
2156 if (AffichGeom && !OE.IsNull()) {
1896126e 2157 char name[256];
7fd59977 2158 sprintf(name,"OFFSET_%d",++NbOFFSET);
2159 DBRep::Set(name,OE);
873c119f 2160 //Standard_Real ii = 0;
7fd59977 2161 }
2162#endif
873c119f 2163#endif
2164
7fd59977 2165 }
2166}
2167
7fd59977 2168
2169//=======================================================================
2170//function : VertexFromNode
2171//purpose :
2172//=======================================================================
2173
2174Standard_Boolean VertexFromNode (const Handle(MAT_Node)& aNode,
873c119f 2175 const Standard_Real Offset,
2176 gp_Pnt2d& PN,
2177 BRepFill_DataMapOfNodeShape& MapNodeVertex,
2178 TopoDS_Vertex& VN)
7fd59977 2179{
2180 Standard_Boolean Status;
2181 Standard_Real Tol = Precision::Confusion();
2182 BRep_Builder B;
2183
2184 if (!aNode->Infinite() && Abs(aNode->Distance()-Offset) < Tol) {
2185 //------------------------------------------------
0d969553 2186 // the Node gives a vertex on the offset
7fd59977 2187 //------------------------------------------------
2188 if (MapNodeVertex.IsBound(aNode)) {
2189 VN = TopoDS::Vertex(MapNodeVertex(aNode));
2190 }
2191 else {
2192 gp_Pnt P(PN.X(),PN.Y(),0.);
2193 B.MakeVertex (VN);
2194 B.UpdateVertex(VN,P, Precision::Confusion());
2195 MapNodeVertex.Bind(aNode,VN);
2196 }
2197 Status = Standard_True;
2198 }
2199 else Status = Standard_False;
2200
2201 return Status;
2202}
2203
2204
2205//=======================================================================
2206//function : StoreInMap
2207//purpose :
2208//=======================================================================
2209
2210void StoreInMap (const TopoDS_Shape& V1,
873c119f 2211 const TopoDS_Shape& V2,
2212 TopTools_IndexedDataMapOfShapeShape& MapVV)
7fd59977 2213{
2214 TopoDS_Shape OldV = V1, NewV = V2;
2215 Standard_Integer i;
2216
2217 if (MapVV.Contains(V2))
2218 NewV = MapVV.FindFromKey(V2);
2219
2220 if (MapVV.Contains(V1))
2221 MapVV.ChangeFromKey(V1) = NewV;
2222
2223 for (i = 1; i <= MapVV.Extent(); i++)
2224 if (MapVV(i).IsSame(V1))
2225 MapVV(i) = NewV;
2226
2227 MapVV.Add(V1, NewV);
2228}
2229
2230//=======================================================================
2231//function : TrimEdge
2232//purpose :
2233//=======================================================================
2234
2235void TrimEdge (const TopoDS_Edge& E,
e11c1bc4 2236 const TopoDS_Shape& ProE,
2237 const TopoDS_Face& AllSpine,
7fd59977 2238 const TopTools_ListOfShape& Detromp,
6a442250 2239 TopTools_SequenceOfShape& TheVer,
2240 TColStd_SequenceOfReal& ThePar,
2241 TopTools_SequenceOfShape& S,
2242 TopTools_IndexedDataMapOfShapeShape& MapVV,
2243 const Standard_Integer IndOfE)
7fd59977 2244{
2245 Standard_Boolean Change = Standard_True;
2246 BRep_Builder TheBuilder;
2247 S.Clear();
2248
2249 //-----------------------------------------------------------
0d969553 2250 // Parse two sequences depending on the parameter on the edge.
7fd59977 2251 //-----------------------------------------------------------
2252 while (Change) {
2253 Change = Standard_False;
2254 for (Standard_Integer i = 1; i < ThePar.Length(); i++) {
2255 if (ThePar.Value(i) > ThePar.Value(i+1)) {
873c119f 2256 ThePar.Exchange(i,i+1);
2257 TheVer.Exchange(i,i+1);
2258 Change = Standard_True;
7fd59977 2259 }
2260 }
2261 }
2262
2263 //----------------------------------------------------------
0d969553 2264 // If a vertex is not in the proofing, it is eliminated.
7fd59977 2265 //----------------------------------------------------------
2266 if (!BRep_Tool::Degenerated(E)) {
2267 for (Standard_Integer k = 1; k <= TheVer.Length(); k ++) {
2268 if ( DoubleOrNotInside (Detromp,
873c119f 2269 TopoDS::Vertex(TheVer.Value(k)))) {
2270 TheVer.Remove(k);
2271 ThePar.Remove(k);
2272 k--;
7fd59977 2273 }
2274 }
2275 }
2276
2277 //----------------------------------------------------------
0d969553
Y		 2278 // If a vertex_double appears twice in the proofing
2279 // the vertex is removed.
2280 // otherwise preserve only one of its representations.
7fd59977 2281 //----------------------------------------------------------
2282 if (!BRep_Tool::Degenerated(E)) {
94f71cad 2283 Standard_Real aParTol = 2.0 * Precision::PConfusion();
7fd59977 2284 for (Standard_Integer k = 1; k < TheVer.Length(); k ++) {
2285 if (TheVer.Value(k).IsSame(TheVer.Value(k+1)) ||
94f71cad 2286 Abs(ThePar.Value(k)-ThePar.Value(k+1)) <= aParTol) {
873c119f 2287
2288 if(k+1 == TheVer.Length()) {
2289 StoreInMap(TheVer(k), TheVer(k+1), MapVV);
2290 TheVer.Remove(k);
2291 ThePar.Remove(k);
2292 }
2293 else {
2294 StoreInMap(TheVer(k+1), TheVer(k), MapVV);
2295 TheVer.Remove(k+1);
2296 ThePar.Remove(k+1);
2297 }
2298 /*
2299 if ( DoubleOrNotInside (Detromp,
2300 TopoDS::Vertex(TheVer.Value(k)))) {
2301 TheVer.Remove(k);
2302 ThePar.Remove(k);
2303 k--;
2304 }
2305 */
2306 k--;
7fd59977 2307 }
2308 }
2309 }
2310 //-----------------------------------------------------------
0d969553
Y		 2311 // Creation of edges.
2312 // the number of vertices should be even. The created edges
2313 // go from a vertex with uneven index i to vertex i+1;
7fd59977 2314 //-----------------------------------------------------------
6a442250 2315 if (IndOfE == 1 || IndOfE == -1) //open result and extreme edges of result
2316 {
7fd59977 2317 TopoDS_Shape aLocalShape = E.EmptyCopied();
2318 TopoDS_Edge NewEdge = TopoDS::Edge(aLocalShape);
6a442250 2319 TopoDS_Vertex V1, V2;
2320 TopExp::Vertices(E, V1, V2);
2321 Standard_Real fpar, lpar;
e11c1bc4 2322 Handle(Geom_Surface) aPlane;
2323 TopLoc_Location aLoc;
2324 Handle(Geom2d_Curve) PCurve;
2325 BRep_Tool::CurveOnSurface(E, PCurve, aPlane, aLoc, fpar, lpar);
2326 //BRep_Tool::Range(E, fpar, lpar);
2327
2328 Standard_Real TrPar1, TrPar2;
2329 Standard_Boolean ToTrimAsOrigin = IsInnerEdge(ProE, AllSpine, TrPar1, TrPar2);
2330
6a442250 2331 if (IndOfE == 1) //first edge of open wire
2332 {
2333 if (NewEdge.Orientation() == TopAbs_FORWARD)
2334 {
e11c1bc4 2335 if (ToTrimAsOrigin)
2336 {
2337 fpar = TrPar1;
2338 gp_Pnt2d TrPnt2d = PCurve->Value(fpar);
2339 gp_Pnt TrPnt(TrPnt2d.X(), TrPnt2d.Y(), 0.);
2340 V1 = BRepLib_MakeVertex(TrPnt);
2341 }
6a442250 2342 TheBuilder.Add(NewEdge, V1.Oriented(TopAbs_FORWARD));
2343 TheBuilder.Add(NewEdge, TheVer.First().Oriented(TopAbs_REVERSED));
2344 TheBuilder.Range(NewEdge, fpar, ThePar.First());
2345 }
2346 else
2347 {
e11c1bc4 2348 if (ToTrimAsOrigin)
2349 {
2350 lpar = TrPar2;
2351 gp_Pnt2d TrPnt2d = PCurve->Value(lpar);
2352 gp_Pnt TrPnt(TrPnt2d.X(), TrPnt2d.Y(), 0.);
2353 V2 = BRepLib_MakeVertex(TrPnt);
2354 }
6a442250 2355 TheBuilder.Add(NewEdge, TheVer.First().Oriented(TopAbs_REVERSED));
2356 TheBuilder.Add(NewEdge, V2.Oriented(TopAbs_FORWARD));
2357 TheBuilder.Range(NewEdge, ThePar.First(), lpar);
2358 }
7fd59977 2359 }
6a442250 2360 else //last edge of open wire
2361 {
2362 if (NewEdge.Orientation() == TopAbs_FORWARD)
2363 {
e11c1bc4 2364 if (ToTrimAsOrigin)
2365 {
2366 lpar = TrPar2;
2367 gp_Pnt2d TrPnt2d = PCurve->Value(lpar);
2368 gp_Pnt TrPnt(TrPnt2d.X(), TrPnt2d.Y(), 0.);
2369 V2 = BRepLib_MakeVertex(TrPnt);
2370 }
6a442250 2371 TheBuilder.Add(NewEdge, TheVer.First().Oriented(TopAbs_FORWARD));
2372 TheBuilder.Add(NewEdge, V2.Oriented(TopAbs_REVERSED));
2373 TheBuilder.Range(NewEdge, ThePar.First(), lpar);
2374 }
2375 else
2376 {
e11c1bc4 2377 if (ToTrimAsOrigin)
2378 {
2379 fpar = TrPar1;
2380 gp_Pnt2d TrPnt2d = PCurve->Value(fpar);
2381 gp_Pnt TrPnt(TrPnt2d.X(), TrPnt2d.Y(), 0.);
2382 V1 = BRepLib_MakeVertex(TrPnt);
2383 }
6a442250 2384 TheBuilder.Add(NewEdge, V1.Oriented(TopAbs_REVERSED));
2385 TheBuilder.Add(NewEdge, TheVer.First().Oriented(TopAbs_FORWARD));
2386 TheBuilder.Range(NewEdge, fpar, ThePar.First());
2387 }
7fd59977 2388 }
6a442250 2389 S.Append(NewEdge);
2390 }
2391 else
2392 {
2393 for (Standard_Integer k = 1; k < TheVer.Length(); k = k+2) {
2394 TopoDS_Shape aLocalShape = E.EmptyCopied();
2395 TopoDS_Edge NewEdge = TopoDS::Edge(aLocalShape);
2396 // TopoDS_Edge NewEdge = TopoDS::Edge(E.EmptyCopied());
2397
2398 if (NewEdge.Orientation() == TopAbs_REVERSED) {
2399 TheBuilder.Add (NewEdge,TheVer.Value(k) .Oriented(TopAbs_REVERSED));
2400 TheBuilder.Add (NewEdge,TheVer.Value(k+1).Oriented(TopAbs_FORWARD));
2401 }
2402 else {
2403 TheBuilder.Add (NewEdge,TheVer.Value(k) .Oriented(TopAbs_FORWARD));
2404 TheBuilder.Add (NewEdge,TheVer.Value(k+1).Oriented(TopAbs_REVERSED));
2405 }
2406
2407
2408 TheBuilder.Range(NewEdge,ThePar.Value(k),ThePar.Value(k+1));
2409
873c119f 2410#ifdef OCCT_DEBUG
7fd59977 2411#ifdef DRAW
6a442250 2412 if ( AffichEdge) {
2413 char name[256];
2414 sprintf(name,"TRIMEDGE_%d",NbTRIMEDGES);
2415 DBRep::Set(name,NewEdge);
2416 }
2417 if (Affich2d) {
2418 TopLoc_Location L;
2419 Standard_Real f,l;
2420 Handle(Geom_Surface) Surf;
2421 Handle(Geom2d_Curve) C;
2422 BRep_Tool::CurveOnSurface(NewEdge,C,Surf,L,f,l);
2423 char name[256];
2424 sprintf(name,"OFFSET2d_%d",NbTRIMEDGES++);
2425 Handle(Geom2d_TrimmedCurve) C2d = new Geom2d_TrimmedCurve(C,f,l);
2426 Handle(DrawTrSurf_Curve2d) dr =
2427 new DrawTrSurf_Curve2d(C2d,Standard_False);
2428 dr->SetColor(Draw_bleu);
2429 Draw::Set(name,dr);
2430 }
7fd59977 2431#endif
873c119f 2432#endif
6a442250 2433 S.Append(NewEdge);
2434 }
7fd59977 2435 }
2436}
2437
e11c1bc4 2438//=======================================================================
2439//function : IsInnerEdge
2440//purpose :
2441//=======================================================================
2442
2443static Standard_Boolean IsInnerEdge(const TopoDS_Shape& ProE,
2444 const TopoDS_Face& AllSpine,
2445 Standard_Real& TrPar1,
2446 Standard_Real& TrPar2)
2447{
2448 if (ProE.ShapeType() != TopAbs_EDGE)
2449 return Standard_False;
2450
2451 TopoDS_Edge anEdge = TopoDS::Edge(ProE);
2452
2453 TopTools_IndexedDataMapOfShapeListOfShape VEmap;
2454 TopExp::MapShapesAndAncestors(AllSpine, TopAbs_VERTEX, TopAbs_EDGE, VEmap);
2455 for (Standard_Integer i = 1; i <= VEmap.Extent(); i++)
2456 {
2457 const TopTools_ListOfShape& LE = VEmap(i);
2458 if (LE.Extent() == 1 && anEdge.IsSame(LE.First()))
2459 return Standard_False;
2460 }
2461
2462 BRep_Tool::Range(anEdge, TrPar1, TrPar2);
2463 return Standard_True;
2464}
2465
2466
2467
7fd59977 2468//=======================================================================
2469//function : DoubleOrNotInside
0d969553 2470//purpose : return True if V appears twice in LV or is not inside.
7fd59977 2471//=======================================================================
2472
2473Standard_Boolean DoubleOrNotInside (const TopTools_ListOfShape& LV,
873c119f 2474 const TopoDS_Vertex& V)
7fd59977 2475{
2476 Standard_Boolean Vu = Standard_False;
2477 TopTools_ListIteratorOfListOfShape it(LV);
2478
2479 for ( ; it.More(); it.Next()) {
2480 if (V.IsSame(it.Value())) {
2481 if (Vu) return Standard_True;
2482 else Vu = Standard_True;
2483 }
2484 }
2485 if (Vu) return Standard_False;
2486 else return Standard_True;
2487}
2488
2489Standard_Boolean IsSmallClosedEdge(const TopoDS_Edge& anEdge,
873c119f 2490 const TopoDS_Vertex& aVertex)
7fd59977 2491{
2492 gp_Pnt PV = BRep_Tool::Pnt(aVertex);
2493 gp_Pnt2d PV2d, Pfirst, Plast, Pmid;
2494 PV2d.SetCoord( PV.X(), PV.Y() );
2495
2496 Handle(Geom2d_Curve) PCurve;
2497 Handle( BRep_CurveRepresentation ) CurveRep =
2498 ((Handle(BRep_TEdge)::DownCast(anEdge.TShape()))->Curves()).First();
2499 PCurve = CurveRep->PCurve();
2500
2501 Standard_Real fpar = (Handle(BRep_GCurve)::DownCast(CurveRep))->First();
2502 Standard_Real lpar = (Handle(BRep_GCurve)::DownCast(CurveRep))->Last();
2503 Pfirst = PCurve->Value(fpar);
2504 Plast = PCurve->Value(lpar);
2505 Pmid = PCurve->Value((fpar + lpar)*0.5);
2506
2507 Standard_Real theTol = BRep_Tool::Tolerance(aVertex);
2508 theTol *= 1.5;
2509
2510 Standard_Real dist1 = Pfirst.Distance(PV2d);
2511 Standard_Real dist2 = Plast.Distance(PV2d);
2512 Standard_Real dist3 = Pmid.Distance(PV2d);
2513
2514 if (dist1 <= theTol && dist2 <= theTol && dist3 <= theTol)
2515 return Standard_True;
2516
2517 return Standard_False;
2518}
2519
2520static void CheckBadEdges(const TopoDS_Face& Spine, const Standard_Real Offset,
873c119f 2521 const BRepMAT2d_BisectingLocus& Locus,
2522 const BRepMAT2d_LinkTopoBilo& Link,
2523 TopTools_ListOfShape& BadEdges)
7fd59977 2524{
2525
2526 TopoDS_Face F = TopoDS::Face(Spine.Oriented(TopAbs_FORWARD));
2527 Standard_Real eps = Precision::Confusion();
2528 Standard_Real LimCurv = 1./Offset;
2529
2530 TopTools_MapOfShape aMap;
2531
2532 for (Standard_Integer ic = 1; ic <= Locus.NumberOfContours(); ic++) {
2533 for (Standard_Integer ie = 1; ie <= Locus.NumberOfElts(ic); ie++) {
2534 const TopoDS_Shape& SE = Link.GeneratingShape(Locus.BasicElt(ic,ie));
2535 if (SE.ShapeType() == TopAbs_EDGE) {
2536
873c119f 2537
2538 if (aMap.Contains(SE)) {
2539 //cout << "Edge is treated second time" << endl;
2540 continue;
2541 }
2542
2543
2544 TopoDS_Edge E = TopoDS::Edge(SE);
2545
2546
2547 Standard_Real f,l;
2548
2549
2550 Handle(Geom2d_Curve) G2d = BRep_Tool::CurveOnSurface(E,F,f,l);
2551
2552
2553 Geom2dAdaptor_Curve AC(G2d,f,l);
2554 GeomAbs_CurveType aCType = AC.GetType();
2555
2556
2557 if(aCType != GeomAbs_Line && aCType != GeomAbs_Circle) {
2558
2559
2560 Standard_Boolean reverse = Standard_False;
2561 if (E.Orientation() == TopAbs_FORWARD) reverse = Standard_True;
2562
2563
2564 gp_Pnt2d P, Pc;
2565 gp_Dir2d N;
2566
2567
2568 Geom2dLProp_CLProps2d aCLProps(G2d, 2, eps);
2569
2570
2571 aCLProps.SetParameter(f);
2572 if(!aCLProps.IsTangentDefined()) {
2573 BadEdges.Append(SE);
2574 aMap.Add(SE);
2575 continue;
2576 }
2577
2578
2579 P = aCLProps.Value();
2580 Standard_Real Crv = aCLProps.Curvature();
2581
2582
2583 if(Crv >= eps) {
2584 aCLProps.Tangent(N);
2585 Standard_Real x = N.Y(), y = -N.X();
2586 N.SetCoord(x, y);
2587 if (reverse) N.Reverse();
2588 aCLProps.CentreOfCurvature(Pc);
2589 gp_Vec2d Dir( P, Pc );
2590 if (N.Dot(Dir) > 0.) {
2591 if (LimCurv <= Crv + eps) {
2592 BadEdges.Append(SE);
2593 aMap.Add(SE);
2594 continue;
2595 }
2596 }
2597 }
2598
2599
2600 aCLProps.SetParameter(l);
2601 if(!aCLProps.IsTangentDefined()) {
2602 BadEdges.Append(SE);
2603 aMap.Add(SE);
2604 continue;
2605 }
2606
2607
2608 P = aCLProps.Value();
2609 Crv = aCLProps.Curvature();
2610
2611
2612 if(Crv >= eps) {
2613 aCLProps.Tangent(N);
2614 Standard_Real x = N.Y(), y = -N.X();
2615 N.SetCoord(x, y);
2616 if (reverse) N.Reverse();
2617 aCLProps.CentreOfCurvature(Pc);
2618 gp_Vec2d Dir( P, Pc );
2619 if (N.Dot(Dir) > 0.) {
2620 if (LimCurv <= Crv + eps) {
2621 BadEdges.Append(SE);
2622 aMap.Add(SE);
2623 continue;
2624 }
2625 }
2626 }
2627 }
7fd59977 2628 }
2629 }
2630 }
2631}
2632
2633
2634//=======================================================================
2635//function : PerformCurve
2636//purpose :
2637//=======================================================================
2638
2639static Standard_Boolean PerformCurve (TColStd_SequenceOfReal& Parameters,
873c119f 2640
2641 TColgp_SequenceOfPnt& Points,
2642 const Adaptor3d_Curve& C,
2643 const Standard_Real Deflection,
2644 const Standard_Real U1,
2645 const Standard_Real U2,
2646 const Standard_Real EPSILON,
2647 const Standard_Integer Nbmin)
7fd59977 2648{
2649 Standard_Real UU1 = Min(U1, U2);
2650 Standard_Real UU2 = Max(U1, U2);
2651
2652 gp_Pnt Pdeb, Pfin;
2653 gp_Vec Ddeb,Dfin;
2654 C.D1(UU1,Pdeb,Ddeb);
2655 Parameters.Append(UU1);
2656 Points.Append(Pdeb);
2657
2658 C.D1(UU2,Pfin,Dfin);
91bb31f3 2659
2660 const Standard_Real aDelta = UU2 - UU1;
2661 const Standard_Real aDist = Pdeb.Distance(Pfin);
2662
2663 if((aDelta/aDist) > 5.0e-14)
2664 {
2665 QuasiFleche(C,Deflection*Deflection,
873c119f 2666
2667 UU1,Pdeb,
2668 Ddeb,
2669 UU2,Pfin,
2670 Dfin,
2671 Nbmin,
2672 EPSILON*EPSILON,
2673 Parameters,Points);
91bb31f3 2674 }
2675
7fd59977 2676 return Standard_True;
2677}
2678//=======================================================================
2679//function : QuasiFleche
2680//purpose :
2681//=======================================================================
2682
2683static void QuasiFleche(const Adaptor3d_Curve& C,
873c119f 2684
2685 const Standard_Real Deflection2,
2686 const Standard_Real Udeb,
2687 const gp_Pnt& Pdeb,
2688 const gp_Vec& Vdeb,
2689 const Standard_Real Ufin,
2690 const gp_Pnt& Pfin,
2691 const gp_Vec& Vfin,
2692 const Standard_Integer Nbmin,
2693 const Standard_Real Eps,
2694 TColStd_SequenceOfReal& Parameters,
2695 TColgp_SequenceOfPnt& Points)
7fd59977 2696{
2697 Standard_Integer Ptslength = Points.Length();
2698 Standard_Real Udelta = Ufin-Udeb;
2699 gp_Pnt Pdelta;
2700 gp_Vec Vdelta;
2701 if (Nbmin > 2) {
2702 Udelta /=(Nbmin-1);
2703 C.D1(Udeb+Udelta,Pdelta,Vdelta);
2704 }
2705 else {
2706 Pdelta = Pfin;
2707 Vdelta = Vfin;
2708 }
2709
2710
2711 Standard_Real Norme = gp_Vec(Pdeb,Pdelta).SquareMagnitude();
2712 Standard_Real theFleche=0;
2713 Standard_Boolean flecheok = Standard_False;
2714 if (Norme > Eps) {
0d969553 2715 // Evaluation of the arrow by interpolation. See IntWalk_IWalking_5.gxx
7fd59977 2716 Standard_Real N1 = Vdeb.SquareMagnitude();
2717 Standard_Real N2 = Vdelta.SquareMagnitude();
2718 if (N1 > Eps && N2 > Eps) {
2719 Standard_Real Normediff =
873c119f 2720
2721 (Vdeb.Normalized().XYZ()-Vdelta.Normalized().XYZ()).SquareModulus();
7fd59977 2722 if (Normediff > Eps) {
873c119f 2723
2724 theFleche = Normediff*Norme/64.;
2725 flecheok = Standard_True;
7fd59977 2726 }
2727 }
2728 }
2729 if (!flecheok) {
2730 gp_Pnt Pmid((Pdeb.XYZ()+Pdelta.XYZ())/2.);
2731 gp_Pnt Pverif(C.Value(Udeb+Udelta/2.));
2732 theFleche = Pmid.SquareDistance(Pverif);
2733 }
2734
2735 if (theFleche < Deflection2) {
2736 Parameters.Append(Udeb+Udelta);
2737 Points.Append(Pdelta);
2738 }
2739 else {
2740 QuasiFleche(C,Deflection2,Udeb,Pdeb,
873c119f 2741
2742 Vdeb,
2743 Udeb+Udelta,Pdelta,
2744 Vdelta,
2745 3,
2746 Eps,
2747 Parameters,Points);
7fd59977 2748
2749 }
2750
2751 if (Nbmin > 2) {
2752 QuasiFleche(C,Deflection2,Udeb+Udelta,Pdelta,
873c119f 2753
2754 Vdelta,
2755 Ufin,Pfin,
2756 Vfin,
2757 Nbmin-(Points.Length()-Ptslength),
2758 Eps,
2759 Parameters,Points);
7fd59977 2760 }
2761}
ab87e6fc 2762
7642e2d0 2763Standard_Boolean CheckSmallParamOnEdge(const TopoDS_Edge& anEdge)
2764{
2765 const BRep_ListOfCurveRepresentation& aList = ((Handle(BRep_TEdge)::DownCast(anEdge.TShape()))->Curves());
2766 if (!aList.IsEmpty())
2767 {
2768 Handle( BRep_CurveRepresentation ) CRep = ((Handle(BRep_TEdge)::DownCast(anEdge.TShape()))->Curves()).First();
2769 Standard_Real f = (Handle(BRep_GCurve)::DownCast(CRep))->First();
2770 Standard_Real l = (Handle(BRep_GCurve)::DownCast(CRep))->Last();
2771 if (Abs (l - f) < Precision::PConfusion())
2772 return Standard_False;
2773 }
2774 return Standard_True;
2775}
2776
2777
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