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0024240: Separation of header files for QANCollection into hxx and cxx
[occt.git] / src / BRepOffsetAPI / BRepOffsetAPI_ThruSections.cxx
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b311480e 1// Created on: 1995-07-18
2// Created by: Joelle CHAUVET
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.
b311480e 16
7fd59977 17// Modified: Mon Jan 12 10:50:10 1998
7fd59977 18// gestion automatique de l'origine et de l'orientation
19// avec la methode ArrangeWires
20// Modified: Mon Jan 19 10:11:56 1998
7fd59977 21// traitement des cas particuliers cylindre, cone, plan
22// (methodes DetectKPart et CreateKPart)
23// Modified: Mon Feb 23 09:28:46 1998
7fd59977 24// traitement des sections avec nombre d'elements different
25// + quelques ameliorations pour les cas particuliers
26// + cas de la derniere section ponctuelle
27// Modified: Mon Apr 6 15:47:44 1998
7fd59977 28// traitement des cas particuliers deplace dans BRepFill
29// Modified: Thu Apr 30 15:24:17 1998
7fd59977 30// separation sections fermees / sections ouvertes + debug
31// Modified: Fri Jul 10 11:23:35 1998
7fd59977 32// surface de CreateSmoothed par concatenation,approximation
33// et segmentation (PRO13924, CTS21295)
34// Modified: Tue Jul 21 16:48:35 1998
7fd59977 35// pb de ratio (BUC60281)
36// Modified: Thu Jul 23 11:38:36 1998
7fd59977 37// sections bouclantes
38// Modified: Fri Aug 28 10:13:44 1998
7fd59977 39// traitement des sections ponctuelles
40// dans l'historique (cf. loft06 et loft09)
41// et dans le cas des solides
42// Modified: Tue Nov 3 10:06:15 1998
7fd59977 43// utilisation de BRepFill_CompatibleWires
b311480e 44
7fd59977 45
46#include <BRepOffsetAPI_ThruSections.ixx>
47
48#include <Precision.hxx>
49#include <Standard_DomainError.hxx>
50
51#include <gp_Pnt.hxx>
52#include <gp_Pnt2d.hxx>
53#include <gp_Dir2d.hxx>
54#include <TColgp_Array1OfPnt.hxx>
55
56#include <GeomAbs_Shape.hxx>
57#include <Geom_Curve.hxx>
58#include <Geom_BSplineSurface.hxx>
59#include <Geom_TrimmedCurve.hxx>
60#include <Geom_BezierCurve.hxx>
61#include <Geom_Conic.hxx>
62#include <Geom2d_Line.hxx>
63#include <GeomFill_Line.hxx>
64#include <GeomFill_AppSurf.hxx>
65#include <GeomFill_SectionGenerator.hxx>
66#include <GeomConvert_CompCurveToBSplineCurve.hxx>
67#include <GeomConvert.hxx>
68#include <GeomConvert_ApproxCurve.hxx>
69#include <Geom_BSplineCurve.hxx>
70#include <BSplCLib.hxx>
71
72#include <TopAbs.hxx>
73#include <TopoDS.hxx>
74#include <TopoDS_Solid.hxx>
75#include <TopoDS_Face.hxx>
76#include <TopoDS_Edge.hxx>
77#include <TopoDS_Vertex.hxx>
78#include <TopoDS_Wire.hxx>
79#include <TopLoc_Location.hxx>
80#include <TopTools_Array1OfShape.hxx>
81#include <TopTools_ListIteratorOfListOfShape.hxx>
82#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
83#include <TopExp.hxx>
84#include <TopoDS_Iterator.hxx>
85
86
87#include <BRep_Builder.hxx>
88#include <BRep_Tool.hxx>
89#include <BRepTools_WireExplorer.hxx>
90
91#include <BRepLib.hxx>
92#include <BRepClass3d_SolidClassifier.hxx>
93
94#include <BRepFill_Generator.hxx>
95#include <BRepFill_CompatibleWires.hxx>
96
97#include <BRepBuilderAPI_MakeFace.hxx>
98#include <BRepBuilderAPI_FindPlane.hxx>
99
100
aadab519 101//=======================================================================
102//function : PreciseUpar
103//purpose : pins the u-parameter of surface close to U-knot
104// to this U-knot
105//=======================================================================
106
107static Standard_Real PreciseUpar(const Standard_Real anUpar,
108 const Handle(Geom_BSplineSurface)& aSurface)
109{
110 Standard_Real Tol = Precision::PConfusion();
111 Standard_Integer i1, i2;
7fd59977 112
aadab519 113 aSurface->LocateU(anUpar, Tol, i1, i2);
114 Standard_Real U1 = aSurface->UKnot(i1);
115 Standard_Real U2 = aSurface->UKnot(i2);
116
117 Standard_Real NewU = anUpar;
118
119 NewU = (anUpar - U1 < U2 - anUpar)? U1 : U2;
120 return NewU;
121}
7fd59977 122
123//=======================================================================
124//function : PerformPlan
0d969553 125//purpose : Construct a plane of filling if exists
7fd59977 126//=======================================================================
127
128static Standard_Boolean PerformPlan(const TopoDS_Wire& W,
129 const Standard_Real presPln,
130 TopoDS_Face& theFace)
131{
132 Standard_Boolean isDegen = Standard_True;
133 TopoDS_Iterator iter(W);
134 for (; iter.More(); iter.Next())
135 {
136 const TopoDS_Edge& anEdge = TopoDS::Edge(iter.Value());
137 if (!BRep_Tool::Degenerated(anEdge))
138 isDegen = Standard_False;
139 }
140 if (isDegen)
141 return Standard_True;
142
143 Standard_Boolean Ok = Standard_False;
144 if (!W.IsNull()) {
145 BRepBuilderAPI_FindPlane Searcher( W, presPln );
146 if (Searcher.Found())
147 {
148 theFace = BRepBuilderAPI_MakeFace(Searcher.Plane(), W);
149 Ok = Standard_True;
150 }
151 else // try to find another surface
152 {
153 BRepBuilderAPI_MakeFace MF( W );
154 if (MF.IsDone())
155 {
156 theFace = MF.Face();
157 Ok = Standard_True;
158 }
159 }
160 }
161
162 return Ok;
163}
164
165//=============================================================================
166//function : IsSameOriented
167//purpose : Checks whether aFace is oriented to the same side as aShell or not
168//=============================================================================
169
170static Standard_Boolean IsSameOriented(const TopoDS_Shape& aFace,
171 const TopoDS_Shape& aShell)
172{
173 TopExp_Explorer Explo(aFace, TopAbs_EDGE);
174 TopoDS_Shape anEdge = Explo.Current();
175 TopAbs_Orientation Or1 = anEdge.Orientation();
176
177 TopTools_IndexedDataMapOfShapeListOfShape EFmap;
178 TopExp::MapShapesAndAncestors( aShell, TopAbs_EDGE, TopAbs_FACE, EFmap );
179
180 const TopoDS_Shape& AdjacentFace = EFmap.FindFromKey(anEdge).First();
181 TopoDS_Shape theEdge;
182 for (Explo.Init(AdjacentFace, TopAbs_EDGE); Explo.More(); Explo.Next())
183 {
184 theEdge = Explo.Current();
185 if (theEdge.IsSame(anEdge))
186 break;
187 }
188
189 TopAbs_Orientation Or2 = theEdge.Orientation();
190 if (Or1 == Or2)
191 return Standard_False;
192 return Standard_True;
193}
194
195//=======================================================================
196//function : MakeSolid
197//purpose :
198//=======================================================================
199
200static TopoDS_Solid MakeSolid(TopoDS_Shell& shell, const TopoDS_Wire& wire1,
201 const TopoDS_Wire& wire2, const Standard_Real presPln,
202 TopoDS_Face& face1, TopoDS_Face& face2)
203{
204 if (shell.IsNull())
205 StdFail_NotDone::Raise("Thrusections is not build");
206 Standard_Boolean B = shell.Closed();
207 BRep_Builder BB;
208
209 if (!B)
210 {
0d969553 211 // It is necessary to close the extremities
7fd59977 212 B = PerformPlan(wire1, presPln, face1);
213 if (B) {
214 B = PerformPlan(wire2, presPln, face2);
215 if (B) {
216 if (!face1.IsNull() && !IsSameOriented( face1, shell ))
217 face1.Reverse();
218 if (!face2.IsNull() && !IsSameOriented( face2, shell ))
219 face2.Reverse();
220
221 if (!face1.IsNull())
222 BB.Add(shell, face1);
223 if (!face2.IsNull())
224 BB.Add(shell, face2);
225
226 shell.Closed(Standard_True);
227 }
228 }
229 }
230
231 TopoDS_Solid solid;
232 BB.MakeSolid(solid);
233 BB.Add(solid, shell);
234
235 // verify the orientation the solid
236 BRepClass3d_SolidClassifier clas3d(solid);
237 clas3d.PerformInfinitePoint(Precision::Confusion());
238 if (clas3d.State() == TopAbs_IN) {
239 BB.MakeSolid(solid);
240 TopoDS_Shape aLocalShape = shell.Reversed();
241 BB.Add(solid, TopoDS::Shell(aLocalShape));
242// B.Add(solid, TopoDS::Shell(newShell.Reversed()));
243 }
244
245 solid.Closed(Standard_True);
246 return solid;
247}
248
249
250//=======================================================================
251//function : BRepOffsetAPI_ThruSections
252//purpose :
253//=======================================================================
254
255BRepOffsetAPI_ThruSections::BRepOffsetAPI_ThruSections(const Standard_Boolean isSolid, const Standard_Boolean ruled,
256 const Standard_Real pres3d):
257 myIsSolid(isSolid), myIsRuled(ruled), myPres3d(pres3d)
258{
259 myWCheck = Standard_True;
260//----------------------------
261 myParamType = Approx_ChordLength;
262 myDegMax = 8;
263 myContinuity = GeomAbs_C2;
264 myCritWeights[0] = .4;
265 myCritWeights[1] = .2;
266 myCritWeights[2] = .4;
267 myUseSmoothing = Standard_False;
268}
269
270
271//=======================================================================
272//function : Init
273//purpose :
274//=======================================================================
275
276void BRepOffsetAPI_ThruSections::Init(const Standard_Boolean isSolid, const Standard_Boolean ruled,
277 const Standard_Real pres3d)
278{
279 myIsSolid = isSolid;
280 myIsRuled = ruled;
281 myPres3d = pres3d;
282 myWCheck = Standard_True;
283//----------------------------
284 myParamType = Approx_ChordLength;
285 myDegMax = 6;
286 myContinuity = GeomAbs_C2;
287 myCritWeights[0] = .4;
288 myCritWeights[1] = .2;
289 myCritWeights[2] = .4;
290 myUseSmoothing = Standard_False;
291
292}
293
294
295//=======================================================================
296//function : AddWire
297//purpose :
298//=======================================================================
299
300void BRepOffsetAPI_ThruSections::AddWire(const TopoDS_Wire& wire)
301{
302 myWires.Append(wire);
303}
304
305//=======================================================================
306//function : AddVertex
307//purpose :
308//=======================================================================
309
310void BRepOffsetAPI_ThruSections::AddVertex(const TopoDS_Vertex& aVertex)
311{
312 BRep_Builder BB;
313
314 TopoDS_Edge DegEdge;
315 BB.MakeEdge( DegEdge );
316 BB.Add( DegEdge, aVertex.Oriented(TopAbs_FORWARD) );
317 BB.Add( DegEdge, aVertex.Oriented(TopAbs_REVERSED) );
318 BB.Degenerated( DegEdge, Standard_True );
319 DegEdge.Closed( Standard_True );
320
321 TopoDS_Wire DegWire;
322 BB.MakeWire( DegWire );
323 BB.Add( DegWire, DegEdge );
324 DegWire.Closed( Standard_True );
325
326 myWires.Append( DegWire );
327}
328
329//=======================================================================
330//function : CheckCompatibility
331//purpose :
332//=======================================================================
333
334void BRepOffsetAPI_ThruSections::CheckCompatibility(const Standard_Boolean check)
335{
336 myWCheck = check;
337}
338
339
340//=======================================================================
341//function : Build
342//purpose :
343//=======================================================================
344
345void BRepOffsetAPI_ThruSections::Build()
346{
347 //Check set of section for right configuration of punctual sections
348 Standard_Integer i;
349 TopExp_Explorer explo;
350 for (i = 2; i <= myWires.Length()-1; i++)
351 {
352 Standard_Boolean wdeg = Standard_True;
353 for (explo.Init(myWires(i), TopAbs_EDGE); explo.More(); explo.Next())
354 {
355 const TopoDS_Edge& anEdge = TopoDS::Edge(explo.Current());
356 wdeg = wdeg && (BRep_Tool::Degenerated(anEdge));
357 }
358 if (wdeg)
359 Standard_Failure::Raise("Wrong usage of punctual sections");
360 }
361 if (myWires.Length() <= 2)
362 {
363 Standard_Boolean wdeg = Standard_True;
364 for (i = 1; i <= myWires.Length(); i++)
365 for (explo.Init(myWires(i), TopAbs_EDGE); explo.More(); explo.Next())
366 {
367 const TopoDS_Edge& anEdge = TopoDS::Edge(explo.Current());
368 wdeg = wdeg && (BRep_Tool::Degenerated(anEdge));
369 }
370 if (wdeg)
371 Standard_Failure::Raise("Wrong usage of punctual sections");
372 }
373
374 if (myWCheck) {
375 // compute origin and orientation on wires to avoid twisted results
376 // and update wires to have same number of edges
377
0d969553 378 // use BRepFill_CompatibleWires
7fd59977 379 TopTools_SequenceOfShape WorkingSections;
380 WorkingSections.Clear();
381 TopTools_DataMapOfShapeListOfShape WorkingMap;
382 WorkingMap.Clear();
383
0d969553 384 // Calculate the working sections
7fd59977 385 BRepFill_CompatibleWires Georges(myWires);
386 Georges.Perform();
387 if (Georges.IsDone()) {
388 WorkingSections = Georges.Shape();
389 WorkingMap = Georges.Generated();
390 }
391 myWires = WorkingSections;
392 }
393
0d969553 394 // Calculate the resulting shape
7fd59977 395 if (myWires.Length() == 2 || myIsRuled) {
396 // create a ruled shell
397 CreateRuled();
398 }
399 else {
400 // create a smoothed shell
401 CreateSmoothed();
402 }
403 // Encode the Regularities
404 BRepLib::EncodeRegularity(myShape);
405
406}
407
408
409//=======================================================================
410//function : CreateRuled
411//purpose :
412//=======================================================================
413
414void BRepOffsetAPI_ThruSections::CreateRuled()
415{
416 Standard_Integer nbSects = myWires.Length();
417 BRepFill_Generator aGene;
418// for (Standard_Integer i=1; i<=nbSects; i++) {
419 Standard_Integer i;
420 for (i=1; i<=nbSects; i++) {
421 aGene.AddWire(TopoDS::Wire(myWires(i)));
422 }
423 aGene.Perform();
424 TopoDS_Shell shell = aGene.Shell();
425
426 if (myIsSolid) {
427
0d969553 428 // check if the first wire is the same as the last
7fd59977 429 Standard_Boolean vClosed = (myWires(1).IsSame(myWires(nbSects))) ;
430
431 if (vClosed) {
432
433 TopoDS_Solid solid;
434 BRep_Builder B;
435 B.MakeSolid(solid);
436 B.Add(solid, shell);
437
0d969553 438 // verify the orientation of the solid
7fd59977 439 BRepClass3d_SolidClassifier clas3d(solid);
440 clas3d.PerformInfinitePoint(Precision::Confusion());
441 if (clas3d.State() == TopAbs_IN) {
442 B.MakeSolid(solid);
443 TopoDS_Shape aLocalShape = shell.Reversed();
444 B.Add(solid, TopoDS::Shell(aLocalShape));
445// B.Add(solid, TopoDS::Shell(shell.Reversed()));
446 }
447 myShape = solid;
448
449 }
450
451 else {
452
453 TopoDS_Wire wire1 = TopoDS::Wire(myWires.First());
454 TopoDS_Wire wire2 = TopoDS::Wire(myWires.Last());
455 myShape = MakeSolid(shell, wire1, wire2, myPres3d, myFirst, myLast);
456
457 }
458
459 Done();
460 }
461
462 else {
463 myShape = shell;
464 Done();
465 }
466
467 // history
468 BRepTools_WireExplorer anExp1, anExp2;
469 TopTools_IndexedDataMapOfShapeListOfShape M;
470 TopExp::MapShapesAndAncestors(shell, TopAbs_EDGE, TopAbs_FACE, M);
471 TopTools_ListIteratorOfListOfShape it;
472
473 TopTools_IndexedDataMapOfShapeListOfShape MV;
474 TopExp::MapShapesAndAncestors(shell, TopAbs_VERTEX, TopAbs_FACE, MV);
475
476 for (i=1; i<=nbSects-1; i++) {
477
478 const TopoDS_Wire& wire1 = TopoDS::Wire(myWires(i));
479 const TopoDS_Wire& wire2 = TopoDS::Wire(myWires(i+1));
480
481 anExp1.Init(wire1);
482 anExp2.Init(wire2);
483
484 Standard_Boolean tantque = anExp1.More() && anExp2.More();
485
486 while (tantque) {
487
488 const TopoDS_Shape& edge1 = anExp1.Current();
489 const TopoDS_Shape& edge2 = anExp2.Current();
490 Standard_Boolean degen1 = BRep_Tool::Degenerated(anExp1.Current());
491 Standard_Boolean degen2 = BRep_Tool::Degenerated(anExp2.Current());
492
493 TopTools_MapOfShape MapFaces;
494 if (degen2){
495 TopoDS_Vertex Vdegen = TopExp::FirstVertex(TopoDS::Edge(edge2));
496 for (it.Initialize(MV.FindFromKey(Vdegen)); it.More(); it.Next()) {
497 MapFaces.Add(it.Value());
498 }
499 }
500 else {
501 for (it.Initialize(M.FindFromKey(edge2)); it.More(); it.Next()) {
502 MapFaces.Add(it.Value());
503 }
504 }
505
506 if (degen1) {
507 TopoDS_Vertex Vdegen = TopExp::FirstVertex(TopoDS::Edge(edge1));
508 for (it.Initialize(MV.FindFromKey(Vdegen)); it.More(); it.Next()) {
509 const TopoDS_Shape& Face = it.Value();
510 if (MapFaces.Contains(Face)) {
511 myGenerated.Bind(edge1, Face);
512 break;
513 }
514 }
515 }
516 else {
517 for (it.Initialize(M.FindFromKey(edge1)); it.More(); it.Next()) {
518 const TopoDS_Shape& Face = it.Value();
519 if (MapFaces.Contains(Face)) {
520 myGenerated.Bind(edge1, Face);
521 break;
522 }
523 }
524 }
525
526 if (!degen1) anExp1.Next();
527 if (!degen2) anExp2.Next();
528
529 tantque = anExp1.More() && anExp2.More();
530 if (degen1) tantque = anExp2.More();
531 if (degen2) tantque = anExp1.More();
532
533 }
534
535 }
536
537}
538
539//=======================================================================
540//function : CreateSmoothed
541//purpose :
542//=======================================================================
543
544void BRepOffsetAPI_ThruSections::CreateSmoothed()
545{
546 // initialisation
547 Standard_Integer nbSects = myWires.Length();
548 BRepTools_WireExplorer anExp;
549
550 Standard_Boolean w1Point = Standard_True;
0d969553 551 // check if the first wire is punctual
7fd59977 552 for(anExp.Init(TopoDS::Wire(myWires(1))); anExp.More(); anExp.Next()) {
553 w1Point = w1Point && (BRep_Tool::Degenerated(anExp.Current()));
554 }
555
556 Standard_Boolean w2Point = Standard_True;
0d969553 557 // check if the last wire is punctual
7fd59977 558 for(anExp.Init(TopoDS::Wire(myWires(nbSects))); anExp.More(); anExp.Next()) {
559 w2Point = w2Point && (BRep_Tool::Degenerated(anExp.Current()));
560 }
561
562 Standard_Boolean vClosed = Standard_False;
0d969553 563 // check if the first wire is the same as last
7fd59977 564 if (myWires(1).IsSame(myWires(myWires.Length()))) vClosed = Standard_True;
565
566 // find the dimension
567 Standard_Integer nbEdges=0;
568 if (!w1Point) {
569 for(anExp.Init(TopoDS::Wire(myWires(1))); anExp.More(); anExp.Next()) {
570 nbEdges++;
571 }
572 }
573 else {
574 for(anExp.Init(TopoDS::Wire(myWires(2))); anExp.More(); anExp.Next()) {
575 nbEdges++;
576 }
577 }
578
579 // recover the shapes
580 Standard_Boolean uClosed = Standard_True;
581 TopTools_Array1OfShape shapes(1, nbSects*nbEdges);
582 Standard_Integer nb=0, i, j;
583
584 for (i=1; i<=nbSects; i++) {
585 const TopoDS_Wire& wire = TopoDS::Wire(myWires(i));
586 if (!wire.Closed()) {
0d969553 587 // check if the vertices are the same
7fd59977 588 TopoDS_Vertex V1, V2;
589 TopExp::Vertices(wire,V1,V2);
590 if ( !V1.IsSame(V2)) uClosed = Standard_False;
591 }
592 if ( (i==1 && w1Point) || (i==nbSects && w2Point) ) {
0d969553 593 // if the wire is punctual
7fd59977 594 anExp.Init(TopoDS::Wire(wire));
595 for(j=1; j<=nbEdges; j++) {
596 nb++;
597 shapes(nb) = anExp.Current();
598 }
599 }
600 else {
0d969553 601 // otherwise
7fd59977 602 for(anExp.Init(TopoDS::Wire(wire)); anExp.More(); anExp.Next()) {
603 nb++;
604 shapes(nb) = anExp.Current();
605 }
606 }
607 }
608
609 // create the new surface
610 TopoDS_Shell shell;
611 TopoDS_Face face;
612 TopoDS_Wire W;
613 TopoDS_Edge edge, edge1, edge2, edge3, edge4, couture;
614 TopTools_Array1OfShape vcouture(1, nbEdges);
615
616 BRep_Builder B;
617 B.MakeShell(shell);
618
619 TopoDS_Wire newW1, newW2;
620 BRep_Builder BW1, BW2;
621 BW1.MakeWire(newW1);
622 BW2.MakeWire(newW2);
623
624 TopLoc_Location loc;
625 TopoDS_Vertex v1f,v1l,v2f,v2l;
626
7fd59977 627 Standard_Integer nbPnts = 21;
628 TColgp_Array2OfPnt points(1, nbPnts, 1, nbSects);
629
0d969553 630 // concatenate each section to get a total surface that will be segmented
7fd59977 631 Handle(Geom_BSplineSurface) TS;
632 TS = TotalSurf(shapes,nbSects,nbEdges,w1Point,w2Point,vClosed);
633
634 if(TS.IsNull()) {
635 return;
636 }
637
638 TopoDS_Shape firstEdge;
639 for (i=1; i<=nbEdges; i++) {
640
0d969553 641 // segmentation of TS
7fd59977 642 Handle(Geom_BSplineSurface) surface;
643 surface = Handle(Geom_BSplineSurface)::DownCast(TS->Copy());
644 Standard_Real Ui1,Ui2,V0,V1;
645 Ui1 = i-1;
646 Ui2 = i;
aadab519 647 Ui1 = PreciseUpar(Ui1, surface);
648 Ui2 = PreciseUpar(Ui2, surface);
7fd59977 649 V0 = surface->VKnot(surface->FirstVKnotIndex());
650 V1 = surface->VKnot(surface->LastVKnotIndex());
651 surface->Segment(Ui1,Ui2,V0,V1);
652
0d969553 653 // return vertices
7fd59977 654 edge = TopoDS::Edge(shapes(i));
655 TopExp::Vertices(edge,v1f,v1l);
656 if (edge.Orientation() == TopAbs_REVERSED)
657 TopExp::Vertices(edge,v1l,v1f);
658 firstEdge = edge;
659
660 edge = TopoDS::Edge(shapes((nbSects-1)*nbEdges+i));
661 TopExp::Vertices(edge,v2f,v2l);
662 if (edge.Orientation() == TopAbs_REVERSED)
663 TopExp::Vertices(edge,v2l,v2f);
664
665 // make the face
666 B.MakeFace(face, surface, Precision::Confusion());
667
668 // make the wire
669 B.MakeWire(W);
670
671 // make the missing edges
672 Standard_Real f1, f2, l1, l2;
673 surface->Bounds(f1,l1,f2,l2);
674
675 // --- edge 1
676 if ( w1Point ) {
0d969553 677 // copy the degenerated edge
7fd59977 678 TopoDS_Shape aLocalShape = shapes(1).EmptyCopied();
679 edge1 = TopoDS::Edge(aLocalShape);
680// edge1 = TopoDS::Edge(shapes(1).EmptyCopied());
681 edge1.Orientation(TopAbs_FORWARD);
682 }
683 else {
684 B.MakeEdge(edge1, surface->VIso(f2), Precision::Confusion());
685 }
686 v1f.Orientation(TopAbs_FORWARD);
687 B.Add(edge1, v1f);
688 v1l.Orientation(TopAbs_REVERSED);
689 B.Add(edge1, v1l);
690 B.Range(edge1, f1, l1);
0d969553
Y		 691 // processing of looping sections
692 // store edges of the 1st section
7fd59977 693 if (vClosed)
694 vcouture(i) = edge1;
695
696
697 // --- edge 2
698 if (vClosed)
699 edge2 = TopoDS::Edge(vcouture(i));
700 else {
701 if ( w2Point ) {
0d969553 702 // copy of the degenerated edge
7fd59977 703 TopoDS_Shape aLocalShape = shapes(nbSects*nbEdges).EmptyCopied();
704 edge2 = TopoDS::Edge(aLocalShape);
705// edge2 = TopoDS::Edge(shapes(nbSects*nbEdges).EmptyCopied());
706 edge2.Orientation(TopAbs_FORWARD);
707 }
708 else {
709 B.MakeEdge(edge2, surface->VIso(l2), Precision::Confusion());
710 }
711 v2f.Orientation(TopAbs_FORWARD);
712 B.Add(edge2, v2f);
713 v2l.Orientation(TopAbs_REVERSED);
714 B.Add(edge2, v2l);
715 B.Range(edge2, f1, l1);
716 }
717 edge2.Reverse();
718
719
720 // --- edge 3
721 if (i==1) {
722 B.MakeEdge(edge3, surface->UIso(f1), Precision::Confusion());
723 v1f.Orientation(TopAbs_FORWARD);
724 B.Add(edge3, v1f);
725 v2f.Orientation(TopAbs_REVERSED);
726 B.Add(edge3, v2f);
727 B.Range(edge3, f2, l2);
728 if (uClosed) {
729 couture = edge3;
730 }
731 }
732 else {
733 edge3 = edge4;
734 }
735 edge3.Reverse();
736
737 // --- edge 4
738 if ( uClosed && i==nbEdges) {
739 edge4 = couture;
740 }
741 else {
742 B.MakeEdge(edge4, surface->UIso(l1), Precision::Confusion());
743 v1l.Orientation(TopAbs_FORWARD);
744 B.Add(edge4, v1l);
745 v2l.Orientation(TopAbs_REVERSED);
746 B.Add(edge4, v2l);
747 B.Range(edge4, f2, l2);
748 }
749
750 B.Add(W,edge1);
751 B.Add(W,edge4);
752 B.Add(W,edge2);
753 B.Add(W,edge3);
754
755 // set PCurve
756 if (vClosed) {
757 B.UpdateEdge(edge1,
758 new Geom2d_Line(gp_Pnt2d(0,f2),gp_Dir2d(1,0)),
759 new Geom2d_Line(gp_Pnt2d(0,l2),gp_Dir2d(1,0)),face,
760 Precision::Confusion());
761 B.Range(edge1,face,f1,l1);
762 }
763 else {
764 B.UpdateEdge(edge1,new Geom2d_Line(gp_Pnt2d(0,f2),gp_Dir2d(1,0)),face,
765 Precision::Confusion());
766 B.Range(edge1,face,f1,l1);
767 B.UpdateEdge(edge2,new Geom2d_Line(gp_Pnt2d(0,l2),gp_Dir2d(1,0)),face,
768 Precision::Confusion());
769 B.Range(edge2,face,f1,l1);
770 }
771
772 if ( uClosed && nbEdges ==1 ) {
773 B.UpdateEdge(edge3,
774 new Geom2d_Line(gp_Pnt2d(l1,0),gp_Dir2d(0,1)),
775 new Geom2d_Line(gp_Pnt2d(f1,0),gp_Dir2d(0,1)),face,
776 Precision::Confusion());
777 B.Range(edge3,face,f2,l2);
778
779 }
780 else {
781 B.UpdateEdge(edge3,new Geom2d_Line(gp_Pnt2d(f1,0),gp_Dir2d(0,1)),face,
782 Precision::Confusion());
783 B.Range(edge3,face,f2,l2);
784 B.UpdateEdge(edge4,new Geom2d_Line(gp_Pnt2d(l1,0),gp_Dir2d(0,1)),face,
785 Precision::Confusion());
786 B.Range(edge4,face,f2,l2);
787 }
788 B.Add(face,W);
789 B.Add(shell, face);
790
791 // complete newW1 newW2
792 TopoDS_Edge edge12 = edge1;
793 TopoDS_Edge edge22 = edge2;
794 edge12.Reverse();
795 edge22.Reverse();
796 BW1.Add(newW1, edge12);
797 BW2.Add(newW2, edge22);
798
799 // history
800 myGenerated.Bind(firstEdge, face);
801 }
802
803 if (uClosed && w1Point && w2Point)
804 shell.Closed(Standard_True);
805
806 if (myIsSolid) {
807
808 if (vClosed) {
809
810 TopoDS_Solid solid;
811 BRep_Builder B;
812 B.MakeSolid(solid);
813 B.Add(solid, shell);
814
815 // verify the orientation the solid
816 BRepClass3d_SolidClassifier clas3d(solid);
817 clas3d.PerformInfinitePoint(Precision::Confusion());
818 if (clas3d.State() == TopAbs_IN) {
819 B.MakeSolid(solid);
820 TopoDS_Shape aLocalShape = shell.Reversed();
821 B.Add(solid, TopoDS::Shell(aLocalShape));
822// B.Add(solid, TopoDS::Shell(shell.Reversed()));
823 }
824 myShape = solid;
825
826 }
827
828 else {
829 myShape = MakeSolid(shell, newW1, newW2, myPres3d, myFirst, myLast);
830 }
831
832 Done();
833 }
834
835 else {
836 myShape = shell;
837 Done();
838 }
839
840 TopExp_Explorer ex(myShape,TopAbs_EDGE);
841 while (ex.More()) {
842 const TopoDS_Edge& CurE = TopoDS::Edge(ex.Current());
843 B.SameRange(CurE, Standard_False);
844 B.SameParameter(CurE, Standard_False);
845 Standard_Real tol = BRep_Tool::Tolerance(CurE);
846 BRepLib::SameParameter(CurE,tol);
847 ex.Next();
848 }
849}
850
851//=======================================================================
852//function : TotalSurf
853//purpose :
854//=======================================================================
855
856Handle(Geom_BSplineSurface) BRepOffsetAPI_ThruSections::
857 TotalSurf(const TopTools_Array1OfShape& shapes,
858 const Standard_Integer NbSects,
859 const Standard_Integer NbEdges,
860 const Standard_Boolean w1Point,
861 const Standard_Boolean w2Point,
862 const Standard_Boolean vClosed) const
863{
864 Standard_Integer i,j,jdeb=1,jfin=NbSects;
865 TopoDS_Edge edge;
866 TopLoc_Location loc;
867 Standard_Real first, last;
868 TopoDS_Vertex vf,vl;
869
870 GeomFill_SectionGenerator section;
871 Handle(Geom_BSplineSurface) surface;
872 Handle(Geom_BSplineCurve) BS, BS1;
873 Handle(Geom_TrimmedCurve) curvTrim;
874 Handle(Geom_BSplineCurve) curvBS;
875
876 if (w1Point) {
877 jdeb++;
878 edge = TopoDS::Edge(shapes(1));
879 TopExp::Vertices(edge,vl,vf);
880 TColgp_Array1OfPnt Extremities(1,2);
881 Extremities(1) = BRep_Tool::Pnt(vf);
882 Extremities(2) = BRep_Tool::Pnt(vl);
883 TColStd_Array1OfReal Bounds(1,2);
884 Bounds(1) = 0.;
885 Bounds(2) = 1.;
886 Standard_Integer Deg = 1;
887 TColStd_Array1OfInteger Mult(1,2);
888 Mult(1) = Deg+1;
889 Mult(2) = Deg+1;
890 Handle(Geom_BSplineCurve) BSPoint
891 = new Geom_BSplineCurve(Extremities,Bounds,Mult,Deg);
892 section.AddCurve(BSPoint);
893 }
894
895 if (w2Point) {
896 jfin--;
897 }
898
899 for (j=jdeb; j<=jfin; j++) {
900
0d969553 901 // case of looping sections
7fd59977 902 if (j==jfin && vClosed) {
903 section.AddCurve(BS1);
904 }
905
906 else {
907 // read the first edge to initialise CompBS;
908 edge = TopoDS::Edge(shapes((j-1)*NbEdges+1));
909 if (BRep_Tool::Degenerated(edge)) {
0d969553 910 // degenerated edge : construction of a punctual curve
7fd59977 911 TopExp::Vertices(edge,vl,vf);
912 TColgp_Array1OfPnt Extremities(1,2);
913 Extremities(1) = BRep_Tool::Pnt(vf);
914 Extremities(2) = BRep_Tool::Pnt(vl);
915 Handle(Geom_Curve) curv = new Geom_BezierCurve(Extremities);
916 curvTrim = new Geom_TrimmedCurve(curv,
917 curv->FirstParameter(),
918 curv->LastParameter());
919 }
920 else {
0d969553 921 // recover the curve on the edge
7fd59977 922 Handle(Geom_Curve) curv = BRep_Tool::Curve(edge, loc, first, last);
923 curvTrim = new Geom_TrimmedCurve(curv, first, last);
924 curvTrim->Transform(loc.Transformation());
925 }
926 if (edge.Orientation() == TopAbs_REVERSED) {
927 curvTrim->Reverse();
928 }
929
0d969553 930 // transformation into BSpline reparameterized on [i-1,i]
7fd59977 931 curvBS = Handle(Geom_BSplineCurve)::DownCast(curvTrim);
932 if (curvBS.IsNull()) {
933 Handle(Geom_Curve) theCurve = curvTrim->BasisCurve();
934 if (theCurve->IsKind(STANDARD_TYPE(Geom_Conic)))
935 {
936 GeomConvert_ApproxCurve appr(curvTrim, Precision::Confusion(), GeomAbs_C1, 16, 14);
937 if (appr.HasResult())
938 curvBS = appr.Curve();
939 }
940 if (curvBS.IsNull())
941 curvBS = GeomConvert::CurveToBSplineCurve(curvTrim);
942 }
943 TColStd_Array1OfReal BSK(1,curvBS->NbKnots());
944 curvBS->Knots(BSK);
945 BSplCLib::Reparametrize(0.,1.,BSK);
946 curvBS->SetKnots(BSK);
947
0d969553 948 // initialization
7fd59977 949 GeomConvert_CompCurveToBSplineCurve CompBS(curvBS);
950
951 for (i=2; i<=NbEdges; i++) {
952 // read the edge
953 edge = TopoDS::Edge(shapes((j-1)*NbEdges+i));
954 if (BRep_Tool::Degenerated(edge)) {
0d969553 955 // degenerated edge : construction of a punctual curve
7fd59977 956 TopExp::Vertices(edge,vl,vf);
957 TColgp_Array1OfPnt Extremities(1,2);
958 Extremities(1) = BRep_Tool::Pnt(vf);
959 Extremities(2) = BRep_Tool::Pnt(vl);
960 Handle(Geom_Curve) curv = new Geom_BezierCurve(Extremities);
961 curvTrim = new Geom_TrimmedCurve(curv,
962 curv->FirstParameter(),
963 curv->LastParameter());
964 }
965 else {
0d969553 966 // return the curve on the edge
7fd59977 967 Handle(Geom_Curve) curv = BRep_Tool::Curve(edge, loc, first, last);
968 curvTrim = new Geom_TrimmedCurve(curv, first, last);
969 curvTrim->Transform(loc.Transformation());
970 }
971 if (edge.Orientation() == TopAbs_REVERSED) {
972 curvTrim->Reverse();
973 }
974
0d969553 975 // transformation into BSpline reparameterized on [i-1,i]
7fd59977 976 curvBS = Handle(Geom_BSplineCurve)::DownCast(curvTrim);
977 if (curvBS.IsNull()) {
978 Handle(Geom_Curve) theCurve = curvTrim->BasisCurve();
979 if (theCurve->IsKind(STANDARD_TYPE(Geom_Conic)))
980 {
981 GeomConvert_ApproxCurve appr(curvTrim, Precision::Confusion(), GeomAbs_C1, 16, 14);
982 if (appr.HasResult())
983 curvBS = appr.Curve();
984 }
985 if (curvBS.IsNull())
986 curvBS = GeomConvert::CurveToBSplineCurve(curvTrim);
987 }
988 TColStd_Array1OfReal BSK(1,curvBS->NbKnots());
989 curvBS->Knots(BSK);
990 BSplCLib::Reparametrize(i-1,i,BSK);
991 curvBS->SetKnots(BSK);
992
993 // concatenation
994 CompBS.Add(curvBS,
995 Precision::Confusion(),
996 Standard_True,
997 Standard_False,
998 1);
999 }
1000
0d969553 1001 // return the final section
7fd59977 1002 BS = CompBS.BSplineCurve();
1003 section.AddCurve(BS);
1004
0d969553 1005 // case of looping sections
7fd59977 1006 if (j==jdeb && vClosed) {
1007 BS1 = BS;
1008 }
1009
1010 }
1011 }
1012
1013 if (w2Point) {
1014 edge = TopoDS::Edge(shapes(NbSects*NbEdges));
1015 TopExp::Vertices(edge,vl,vf);
1016 TColgp_Array1OfPnt Extremities(1,2);
1017 Extremities(1) = BRep_Tool::Pnt(vf);
1018 Extremities(2) = BRep_Tool::Pnt(vl);
1019 TColStd_Array1OfReal Bounds(1,2);
1020 Bounds(1) = 0.;
1021 Bounds(2) = 1.;
1022 Standard_Integer Deg = 1;
1023 TColStd_Array1OfInteger Mult(1,2);
1024 Mult(1) = Deg+1;
1025 Mult(2) = Deg+1;
1026 Handle(Geom_BSplineCurve) BSPoint
1027 = new Geom_BSplineCurve(Extremities,Bounds,Mult,Deg);
1028 section.AddCurve(BSPoint);
1029 }
1030
1031 section.Perform(Precision::PConfusion());
1032 Handle(GeomFill_Line) line = new GeomFill_Line(NbSects);
1033
1034 Standard_Integer nbIt = 3;
1035 if(myPres3d <= 1.e-3) nbIt = 0;
1036
1037 Standard_Integer degmin = 2, degmax = Max(myDegMax, degmin);
1038 Standard_Boolean SpApprox = Standard_True;
1039
1040 GeomFill_AppSurf anApprox(degmin, degmax, myPres3d, myPres3d, nbIt);
1041 anApprox.SetContinuity(myContinuity);
1042
1043 if(myUseSmoothing) {
1044 anApprox.SetCriteriumWeight(myCritWeights[0], myCritWeights[1], myCritWeights[2]);
1045 anApprox.PerformSmoothing(line, section);
1046 }
1047 else {
1048 anApprox.SetParType(myParamType);
1049 anApprox.Perform(line, section, SpApprox);
1050 }
1051
1052 if(anApprox.IsDone()) {
1053 surface =
1054 new Geom_BSplineSurface(anApprox.SurfPoles(), anApprox.SurfWeights(),
1055 anApprox.SurfUKnots(), anApprox.SurfVKnots(),
1056 anApprox.SurfUMults(), anApprox.SurfVMults(),
1057 anApprox.UDegree(), anApprox.VDegree());
1058 }
1059
1060 return surface;
1061
1062}
1063
1064//=======================================================================
1065//function : FirstShape
1066//purpose :
1067//=======================================================================
1068
1069const TopoDS_Shape& BRepOffsetAPI_ThruSections::FirstShape() const
1070{
1071 return myFirst;
1072}
1073
1074//=======================================================================
1075//function : LastShape
1076//purpose :
1077//=======================================================================
1078
1079const TopoDS_Shape& BRepOffsetAPI_ThruSections::LastShape() const
1080{
1081 return myLast;
1082}
1083
1084//=======================================================================
1085//function : GeneratedFace
1086//purpose :
1087//=======================================================================
1088
1089TopoDS_Shape BRepOffsetAPI_ThruSections::GeneratedFace(const TopoDS_Shape& edge) const
1090{
1091 TopoDS_Shape bid;
1092 if (myGenerated.IsBound(edge)) {
1093 return myGenerated(edge);
1094 }
1095 else {
1096 return bid;
1097 }
1098}
1099
1100
1101//=======================================================================
1102//function : CriteriumWeight
0d969553 1103//purpose : returns the Weights associated to the criterium used in
7fd59977 1104// the optimization.
1105//=======================================================================
1106//
1107void BRepOffsetAPI_ThruSections::CriteriumWeight(Standard_Real& W1, Standard_Real& W2, Standard_Real& W3) const
1108{
1109 W1 = myCritWeights[0];
1110 W2 = myCritWeights[1];
1111 W3 = myCritWeights[2];
1112}
1113//=======================================================================
1114//function : SetCriteriumWeight
1115//purpose :
1116//=======================================================================
1117
1118void BRepOffsetAPI_ThruSections::SetCriteriumWeight(const Standard_Real W1, const Standard_Real W2, const Standard_Real W3)
1119{
1120 if (W1 < 0 || W2 < 0 || W3 < 0 ) Standard_DomainError::Raise();
1121 myCritWeights[0] = W1;
1122 myCritWeights[1] = W2;
1123 myCritWeights[2] = W3;
1124}
1125//=======================================================================
1126//function : SetContinuity
1127//purpose :
1128//=======================================================================
1129
1130void BRepOffsetAPI_ThruSections::SetContinuity (const GeomAbs_Shape TheCont)
1131{
1132 myContinuity = TheCont;
1133}
1134
1135//=======================================================================
1136//function : Continuity
1137//purpose :
1138//=======================================================================
1139
1140GeomAbs_Shape BRepOffsetAPI_ThruSections::Continuity () const
1141{
1142 return myContinuity;
1143}
1144
1145//=======================================================================
1146//function : SetParType
1147//purpose :
1148//=======================================================================
1149
1150void BRepOffsetAPI_ThruSections::SetParType (const Approx_ParametrizationType ParType)
1151{
1152 myParamType = ParType;
1153}
1154
1155//=======================================================================
1156//function : ParType
1157//purpose :
1158//=======================================================================
1159
1160Approx_ParametrizationType BRepOffsetAPI_ThruSections::ParType () const
1161{
1162 return myParamType;
1163}
1164
1165//=======================================================================
1166//function : SetMaxDegree
1167//purpose :
1168//=======================================================================
1169
1170void BRepOffsetAPI_ThruSections:: SetMaxDegree(const Standard_Integer MaxDeg)
1171{
1172 myDegMax = MaxDeg;
1173}
1174
1175//=======================================================================
1176//function : MaxDegree
1177//purpose :
1178//=======================================================================
1179
1180Standard_Integer BRepOffsetAPI_ThruSections::MaxDegree () const
1181{
1182 return myDegMax;
1183}
1184
1185//=======================================================================
1186//function : SetSmoothing
1187//purpose :
1188//=======================================================================
1189
1190void BRepOffsetAPI_ThruSections::SetSmoothing(const Standard_Boolean UseVar)
1191{
1192 myUseSmoothing = UseVar;
1193}
1194
1195//=======================================================================
1196//function : UseSmoothing
1197//purpose :
1198//=======================================================================
1199
1200Standard_Boolean BRepOffsetAPI_ThruSections::UseSmoothing () const
1201{
1202 return myUseSmoothing;
1203}
1204
1205
1206
1207
1208
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