1 // Created on: 1993-02-02
2 // Created by: Laurent BUCHARD
3 // Copyright (c) 1993-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 // modified by Edward AGAPOV (eap) Tue Jan 22 12:29:55 2002
18 // modified by Oleg FEDYAED (ofv) Fri Nov 29 16:08:02 2002
20 #include <Adaptor3d_HSurface.hxx>
21 #include <Adaptor3d_TopolTool.hxx>
24 #include <Intf_PIType.hxx>
25 #include <Intf_SectionLine.hxx>
26 #include <Intf_SectionPoint.hxx>
27 #include <Intf_TangentZone.hxx>
28 #include <IntPatch_InterferencePolyhedron.hxx>
29 #include <IntPatch_Line.hxx>
30 #include <IntPatch_Polyhedron.hxx>
31 #include <IntPatch_PrmPrmIntersection.hxx>
32 #include <IntPatch_PrmPrmIntersection_T3Bits.hxx>
33 #include <IntPatch_RstInt.hxx>
34 #include <IntPatch_WLine.hxx>
35 #include <IntPolyh_Intersection.hxx>
36 #include <IntSurf_LineOn2S.hxx>
37 #include <IntSurf_ListIteratorOfListOfPntOn2S.hxx>
38 #include <IntSurf_PntOn2S.hxx>
39 #include <IntWalk_PWalking.hxx>
40 #include <Standard_OutOfRange.hxx>
41 #include <StdFail_NotDone.hxx>
42 #include <TColStd_Array1OfReal.hxx>
43 #include <TColStd_HArray1OfReal.hxx>
44 #include <TColStd_SequenceOfInteger.hxx>
46 static void SectionPointToParameters(const Intf_SectionPoint& Sp,
47 const IntPatch_Polyhedron& Surf1,
48 const IntPatch_Polyhedron& Surf2,
56 void AdjustOnPeriodic(const Handle(Adaptor3d_HSurface)& Surf1,
57 const Handle(Adaptor3d_HSurface)& Surf2,
58 IntPatch_SequenceOfLine& aSLin);
61 IntSurf_PntOn2S MakeNewPoint(const IntSurf_PntOn2S& replacePnt,
62 const IntSurf_PntOn2S& oldPnt,
63 const Standard_Real* Periods);
65 static Standard_Boolean IsPointOnLine(const IntSurf_PntOn2S &thePOn2S,
66 const Handle(IntPatch_WLine) &theWLine,
67 const Standard_Real Deflection);
69 static void AddWLine(IntPatch_SequenceOfLine &theLines,
70 const Handle(IntPatch_WLine) &theWLine,
71 const Standard_Real Deflection);
73 static void SeveralWlinesProcessing(const Handle(Adaptor3d_HSurface)& theSurf1,
74 const Handle(Adaptor3d_HSurface)& theSurf2,
75 const IntPatch_SequenceOfLine& theSLin,
76 const Standard_Real* const thePeriodsArr,
77 const IntSurf_TypeTrans theTrans1,
78 const IntSurf_TypeTrans theTrans2,
79 const Standard_Real theTol,
80 const Standard_Real theMaxStepS1,
81 const Standard_Real theMaxStepS2,
82 Handle(IntPatch_WLine)& theWLline)
84 if(theSLin.Length() == 0)
87 Standard_Real aU1 = 0.0, aV1 = 0.0, aU2 = 0.0, aV2 = 0.0;
89 Standard_Integer cnbV = theWLline->NbVertex();
91 for( ciV = 1; ciV <= cnbV; ciV++ )
93 Standard_Real pntDMin = 1.e+100;
94 Standard_Integer VDMin = 0;
95 Standard_Integer WLDMin = 0;
96 gp_Pnt cPV = theWLline->Vertex(ciV).Value();
97 theWLline->Vertex(ciV).Parameters(aU1, aV1, aU2, aV2);
98 const gp_Pnt2d aPCS1(aU1, aV1), aPCS2(aU2, aV2);
100 for( iL = 1; iL <= theSLin.Length(); iL++)
102 const Handle(IntPatch_Line)& aSLine = theSLin.Value(iL);
103 IntPatch_IType aType = aSLine->ArcType();
104 if( aType != IntPatch_Walking)
106 const Handle(IntPatch_WLine) aWLine = Handle(IntPatch_WLine)::DownCast(aSLine);
107 Standard_Integer tnbV = aWLine->NbVertex();
108 Standard_Integer tiV;
109 for( tiV = 1; tiV <= tnbV; tiV++ )
111 gp_Pnt tPV = aWLine->Vertex(tiV).Value();
113 aWLine->Vertex(tiV).Parameters(aU1, aV1, aU2, aV2);
114 const gp_Pnt2d aPTS1(aU1, aV1), aPTS2(aU2, aV2);
116 Standard_Real tDistance = cPV.Distance(tPV);
117 Standard_Real uRs1 = theSurf1->Surface().UResolution(tDistance);
118 Standard_Real vRs1 = theSurf1->Surface().VResolution(tDistance);
119 Standard_Real uRs2 = theSurf2->Surface().UResolution(tDistance);
120 Standard_Real vRs2 = theSurf2->Surface().VResolution(tDistance);
121 Standard_Real RmaxS1 = Max(uRs1,vRs1);
122 Standard_Real RmaxS2 = Max(uRs2,vRs2);
124 if(RmaxS1 < theMaxStepS1 && RmaxS2 < theMaxStepS2)
126 if( pntDMin > tDistance && tDistance > Precision::PConfusion())
128 const Standard_Real aSqDist1 = aPCS1.SquareDistance(aPTS1),
129 aSqDist2 = aPCS2.SquareDistance(aPTS2);
130 if((aSqDist1 < RmaxS1*RmaxS1) && (aSqDist2 < RmaxS2*RmaxS2))
143 const Handle(IntPatch_Line)& aSLine = theSLin.Value(WLDMin);
144 const Handle(IntPatch_WLine) aWLine = Handle(IntPatch_WLine)::DownCast(aSLine);
145 Standard_Integer tiVpar = (Standard_Integer)aWLine->Vertex(VDMin).ParameterOnLine();
146 Standard_Integer ciVpar = (Standard_Integer)theWLline->Vertex(ciV).ParameterOnLine();
147 Standard_Real u11 = 0., u12 = 0., v11 = 0., v12 = 0.;
148 Standard_Real u21 = 0., u22 = 0., v21 = 0., v22 = 0.;
149 theWLline->Point(ciVpar).Parameters(u11,v11,u12,v12);
150 aWLine->Point(tiVpar).Parameters(u21,v21,u22,v22);
152 Handle(IntSurf_LineOn2S) newL2s = new IntSurf_LineOn2S();
153 IntSurf_PntOn2S replacePnt = aWLine->Point(tiVpar);
154 Standard_Integer cNbP = theWLline->NbPnts();
156 TColStd_SequenceOfInteger VPold;
157 Standard_Integer iPo;
158 for( iPo = 1; iPo <= cnbV; iPo++ )
160 Standard_Real Po = theWLline->Vertex(iPo).ParameterOnLine();
161 Standard_Integer IPo = (Standard_Integer) Po;
165 Standard_Boolean removeNext = Standard_False;
166 Standard_Boolean removePrev = Standard_False;
169 Standard_Integer dPar = Abs( VPold.Value(ciV) - VPold.Value(ciV+1));
172 removeNext = Standard_True;
173 for( iPo = (ciV+1); iPo <= cnbV; iPo++ )
174 VPold.SetValue(iPo, VPold.Value(iPo) - 1 );
177 else if( ciV == cnbV)
179 Standard_Integer dPar = Abs( VPold.Value(ciV) - VPold.Value(ciV-1));
182 removePrev = Standard_True;
183 VPold.SetValue(ciV, VPold.Value(ciV) - 1 );
188 Standard_Integer dParMi = Abs( VPold.Value(ciV) - VPold.Value(ciV-1));
189 Standard_Integer dParMa = Abs( VPold.Value(ciV) - VPold.Value(ciV+1));
192 removePrev = Standard_True;
193 VPold.SetValue(ciV, VPold.Value(ciV) - 1 );
198 removeNext = Standard_True;
199 for( iPo = (ciV+1); iPo <= cnbV; iPo++ )
202 VPold.SetValue(iPo, VPold.Value(iPo) - 2 );
204 VPold.SetValue(iPo, VPold.Value(iPo) - 1 );
210 for( iPo = (ciV+1); iPo <= cnbV; iPo++ )
211 VPold.SetValue(iPo, VPold.Value(iPo) - 1 );
215 Standard_Integer pI = ciVpar;
218 for( iP = 1; iP <= cNbP; iP++)
222 IntSurf_PntOn2S newPnt = MakeNewPoint(replacePnt, theWLline->Point(iP), thePeriodsArr);
225 else if(removeNext && iP == (pI + 1))
227 else if(removePrev && iP == (pI - 1))
230 newL2s->Add(theWLline->Point(iP));
233 IntPatch_Point newVtx;
234 gp_Pnt Pnt3dV = aWLine->Vertex(VDMin).Value();
235 newVtx.SetValue(Pnt3dV,theTol,Standard_False);
236 newVtx.SetParameters(u21,v21,u22,v22);
237 newVtx.SetParameter(VPold.Value(ciV));
239 Handle(IntPatch_WLine) NWLine = new IntPatch_WLine(newL2s,Standard_False,theTrans1,theTrans2);
242 for( iV = 1; iV <= cnbV; iV++ )
245 NWLine->AddVertex(newVtx);
248 IntPatch_Point theVtx = theWLline->Vertex(iV);
249 theVtx.SetParameter(VPold.Value(iV));
250 NWLine->AddVertex(theVtx);
256 }//for( ciV = 1; ciV <= cnbV; ciV++ )
259 //=======================================================================
260 //function : DublicateOfLinesProcessing
261 //purpose : Decides, if rejecting current line is necessary
262 //=======================================================================
263 static void DublicateOfLinesProcessing( const IntWalk_PWalking& thePW,
264 const Standard_Integer theWLID,
265 IntPatch_SequenceOfLine& theLines,
266 Standard_Boolean& theIsRejectReq)
268 const Handle(IntPatch_WLine)& anExistWL =
269 *((Handle(IntPatch_WLine)*)&theLines.Value(theWLID));
270 const Standard_Integer aNbPrevPoints = anExistWL->NbPnts();
271 const Standard_Integer aNbCurrPoints = thePW.NbPoints();
273 if(aNbPrevPoints < aNbCurrPoints)
274 {//Remove preview line
275 theLines.Remove(theWLID);
276 theIsRejectReq = Standard_False;
278 else if(aNbPrevPoints == aNbCurrPoints)
280 Standard_Real aLPrev = 0.0, aLCurr = 0.0;
281 for(Standard_Integer aNbPP = 1; aNbPP < aNbPrevPoints; aNbPP++)
283 const gp_Pnt aP1prev(anExistWL->Point(aNbPP).Value()),
284 aP2prev(anExistWL->Point(aNbPP+1).Value());
285 const gp_Pnt aP1curr(thePW.Value(aNbPP).Value()),
286 aP2curr(thePW.Value(aNbPP+1).Value());
288 aLPrev += aP1prev.Distance(aP2prev);
289 aLCurr += aP1curr.Distance(aP2curr);
293 {//Remove preview line
294 theLines.Remove(theWLID);
295 theIsRejectReq = Standard_False;
300 //==================================================================================
303 //==================================================================================
304 IntPatch_PrmPrmIntersection::IntPatch_PrmPrmIntersection(): done(Standard_False)
308 //==================================================================================
309 // function : Perform
311 //==================================================================================
312 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
313 const Handle(Adaptor3d_TopolTool)& D1,
314 const Standard_Real TolTangency,
315 const Standard_Real Epsilon,
316 const Standard_Real Deflection,
317 const Standard_Real Increment)
319 IntPatch_Polyhedron Poly1( Surf1, D1->NbSamplesU(), D1->NbSamplesV() );
320 Perform( Surf1, Poly1, D1, TolTangency, Epsilon, Deflection, Increment );
323 //==================================================================================
324 // function : Perform
326 //==================================================================================
327 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
328 const IntPatch_Polyhedron& Poly1,
329 const Handle(Adaptor3d_TopolTool)& D1,
330 const Handle(Adaptor3d_HSurface)& Surf2,
331 const Handle(Adaptor3d_TopolTool)& D2,
332 const Standard_Real TolTangency,
333 const Standard_Real Epsilon,
334 const Standard_Real Deflection,
335 const Standard_Real Increment)
337 IntPatch_Polyhedron Poly2( Surf2 );
338 Perform( Surf1, Poly1, D1, Surf2, Poly2, D2, TolTangency, Epsilon, Deflection, Increment);
341 //==================================================================================
342 // function : Perform
344 //==================================================================================
345 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
346 const Handle(Adaptor3d_TopolTool)& D1,
347 const Handle(Adaptor3d_HSurface)& Surf2,
348 const IntPatch_Polyhedron& Poly2,
349 const Handle(Adaptor3d_TopolTool)& D2,
350 const Standard_Real TolTangency,
351 const Standard_Real Epsilon,
352 const Standard_Real Deflection,
353 const Standard_Real Increment)
355 IntPatch_Polyhedron Poly1( Surf1 );
356 Perform( Surf1, Poly1, D1, Surf2, Poly2, D2, TolTangency, Epsilon, Deflection, Increment );
359 //==================================================================================
360 // function : Perform
362 //==================================================================================
363 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
364 const IntPatch_Polyhedron& Poly1,
365 const Handle(Adaptor3d_TopolTool)& D1,
366 const Handle(Adaptor3d_HSurface)& Surf2,
367 const IntPatch_Polyhedron& Poly2,
368 const Handle(Adaptor3d_TopolTool)& D2,
369 const Standard_Real TolTangency,
370 const Standard_Real Epsilon,
371 const Standard_Real Deflection,
372 const Standard_Real Increment)
374 IntPatch_InterferencePolyhedron Interference(Poly1,Poly2);
375 empt = Standard_True;
376 done = Standard_True;
379 Standard_Integer nbLigSec = Interference.NbSectionLines();
380 Standard_Integer nbTanZon = Interference.NbTangentZones();
382 Standard_Integer NbLigCalculee = 0;
384 Standard_Real U1,U2,V1,V2;
385 Standard_Real pu1,pu2,pv1,pv2;
387 TColStd_Array1OfReal StartParams(1,4);
389 IntWalk_PWalking PW( Surf1, Surf2, TolTangency, Epsilon, Deflection, Increment );
391 Standard_Real SeuildPointLigne = 15.0 * Increment * Increment; //-- 10 est insuffisant
392 Standard_Real incidence;
393 Standard_Real dminiPointLigne;
395 Standard_Boolean HasStartPoint,RejetLigne;
397 IntSurf_PntOn2S StartPOn2S;
399 Standard_Integer ver;
401 gp_Pnt Point3dDebut,Point3dFin;
403 if( nbLigSec >= 1 ) {
404 Standard_Integer *TabL = new Standard_Integer [nbLigSec+1];
406 for( ls = 1; ls <= nbLigSec; ls++ )
409 Standard_Boolean triok;
412 for(Standard_Integer b=2; b<=nbLigSec; b++) {
413 Standard_Integer nb_B = Interference.LineValue(TabL[b]).NumberOfPoints();
414 Standard_Integer nb_A = Interference.LineValue(TabL[b-1]).NumberOfPoints();
416 Standard_Integer tyu=TabL[b];
419 triok=Standard_False;
422 } while( triok==Standard_False );
424 for( ls = 1; ls <= nbLigSec; ls++) {
425 const Intf_SectionLine& LineSec=Interference.LineValue(TabL[ls]);
426 Standard_Integer nbp = LineSec.NumberOfPoints();
428 Standard_Integer *TabPtDep = new Standard_Integer [nbp+1];
429 Standard_Integer ilig;
430 for( ilig = 1; ilig <= nbp; ilig++)
433 Standard_Real UminLig1,VminLig1,UmaxLig1,VmaxLig1;
434 Standard_Real UminLig2,VminLig2,UmaxLig2,VmaxLig2;
436 SectionPointToParameters(LineSec.GetPoint(1),Poly1,Poly2,UminLig1,VminLig1,UminLig2,VminLig2);
443 for( ilig = 2; ilig <= nbp; ilig++ ) {
444 SectionPointToParameters(LineSec.GetPoint(ilig),Poly1,Poly2,U1,V1,U2,V2);
446 if(U1>UmaxLig1) UmaxLig1=U1;
447 if(V1>VmaxLig1) VmaxLig1=V1;
448 if(U2>UmaxLig2) UmaxLig2=U2;
449 if(V2>VmaxLig2) VmaxLig2=V2;
451 if(U1<UminLig1) UminLig1=U1;
452 if(V1<VminLig1) VminLig1=V1;
453 if(U2<UminLig2) UminLig2=U2;
454 if(V2<VminLig2) VminLig2=V2;
457 Standard_Integer nbps2 = (nbp>3)? (nbp/2) : 1;
458 Standard_Integer NombreDePointsDeDepartDuCheminement = 0;
459 Standard_Integer IndicePointdeDepart1 = 0,IndicePointdeDepart2 = 0;
460 Standard_Boolean lignetrouvee=Standard_False;
463 NombreDePointsDeDepartDuCheminement++;
464 if(NombreDePointsDeDepartDuCheminement == 1) {
466 Standard_Integer nbp1_4=nbp/4;
467 Standard_Integer nbp3_4=nbp-nbp1_4;
469 Standard_Integer nsp;
470 for(nsp=nbp/2; nsp<nbp3_4; nsp++) {
471 Standard_Real CurrentIncidence = LineSec.GetPoint(nsp).Incidence();
472 if(CurrentIncidence < incidence) {
474 incidence = 0.9*CurrentIncidence;
478 for(nsp=nbp/2; nsp>nbp1_4; nsp--) {
479 Standard_Real CurrentIncidence = LineSec.GetPoint(nsp).Incidence();
480 if(CurrentIncidence < incidence) {
482 incidence = 0.9*CurrentIncidence;
487 NombreDePointsDeDepartDuCheminement=3;
489 IndicePointdeDepart1 = nbps2;
491 else if(NombreDePointsDeDepartDuCheminement == 2) {
492 if(IndicePointdeDepart1 == 1) {
494 IndicePointdeDepart2 = nbps2;
498 IndicePointdeDepart2 = 1;
501 else if(NombreDePointsDeDepartDuCheminement == 3) {
502 if(IndicePointdeDepart1 == nbp)
503 nbps2 = (IndicePointdeDepart1+IndicePointdeDepart2)/2;
508 nbps2 = NombreDePointsDeDepartDuCheminement-3;
509 NombreDePointsDeDepartDuCheminement++;
512 if(TabPtDep[nbps2]==0) {
514 SectionPointToParameters(LineSec.GetPoint(nbps2),Poly1,Poly2,U1,V1,U2,V2);
521 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
522 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
525 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
526 NbLigCalculee = SLin.Length();
528 for( l=1; (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne); l++) {
529 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
531 if (IsPointOnLine(StartPOn2S, testwline, Deflection)) {
532 dminiPointLigne = 0.0;
536 if(dminiPointLigne > SeuildPointLigne) {
537 PW.Perform(StartParams,UminLig1,VminLig1,UminLig2,VminLig2,UmaxLig1,VmaxLig1,UmaxLig2,VmaxLig2);
539 if(PW.NbPoints()>2) {
540 RejetLigne = Standard_False;
541 Point3dDebut = PW.Value(1).Value();
542 const IntSurf_PntOn2S& PointFin = PW.Value(PW.NbPoints());
543 Point3dFin = PointFin.Value();
544 for( ver = 1 ; ver<= NbLigCalculee ; ver++) {
545 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
547 // Check end point if it is on existing line.
548 // Start point is checked before.
549 if (IsPointOnLine(PointFin, verwline, Deflection)) {
550 RejetLigne = Standard_True;
554 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
555 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
556 if( (Point3dDebut.Distance(verPointDebut.Value()) <= TolTangency) &&
557 (Point3dFin.Distance(verPointFin.Value()) <= TolTangency))
559 RejetLigne = Standard_True;
566 DublicateOfLinesProcessing(PW, ver, SLin, RejetLigne);
570 // Calculation transition
571 IntSurf_TypeTrans trans1,trans2;
572 Standard_Real locu,locv;
573 gp_Vec norm1,norm2,d1u,d1v;
575 Standard_Integer indextg;
576 gp_Vec tgline(PW.TangentAtLine(indextg));
577 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
578 Surf1->D1(locu,locv,ptbid,d1u,d1v);
579 norm1 = d1u.Crossed(d1v);
580 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
581 Surf2->D1(locu,locv,ptbid,d1u,d1v);
582 norm2 = d1u.Crossed(d1v);
583 if(tgline.DotCross(norm2,norm1)>0.) {
584 trans1 = IntSurf_Out;
589 trans2 = IntSurf_Out;
592 Standard_Real TolTang = TolTangency;
593 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
594 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang);
595 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang);
597 if(wline->NbVertex() == 0) {
599 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
600 POn2S.Parameters(pu1,pv1,pu2,pv2);
601 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
602 vtx.SetParameters(pu1,pv1,pu2,pv2);
604 wline->AddVertex(vtx);
606 POn2S = PW.Line()->Value(wline->NbPnts());
607 POn2S.Parameters(pu1,pv1,pu2,pv2);
608 vtx.SetValue(Point3dFin,TolTang,Standard_False);
609 vtx.SetParameters(pu1,pv1,pu2,pv2);
610 vtx.SetParameter(wline->NbPnts());
611 wline->AddVertex(vtx);
614 lignetrouvee = Standard_True;
615 AddWLine(SLin, wline, Deflection);
616 empt = Standard_False;
620 }// dminiPointLigne > SeuildPointLigne
622 }// TabPtDep[nbps2]==0
623 } while( nbp>5 && ( !( ( (NombreDePointsDeDepartDuCheminement >= 3) && lignetrouvee ) ||
624 ( (NombreDePointsDeDepartDuCheminement-3>=nbp) && !lignetrouvee ) ) ) );
632 Standard_Real UminLig1,VminLig1,UmaxLig1,VmaxLig1;
633 Standard_Real UminLig2,VminLig2,UmaxLig2,VmaxLig2;
635 UminLig1=VminLig1=UminLig2=VminLig2=RealLast();
636 UmaxLig1=VmaxLig1=UmaxLig2=VmaxLig2=-UminLig1;
639 for(z=1; z <= nbTanZon; z++) {
640 const Intf_TangentZone& TangentZone=Interference.ZoneValue(z);
641 for(Standard_Integer pz=1; pz<=TangentZone.NumberOfPoints(); pz++) {
642 SectionPointToParameters(TangentZone.GetPoint(pz),Poly1,Poly2,U1,V1,U2,V2);
644 if(U1>UmaxLig1) UmaxLig1=U1;
645 if(V1>VmaxLig1) VmaxLig1=V1;
646 if(U2>UmaxLig2) UmaxLig2=U2;
647 if(V2>VmaxLig2) VmaxLig2=V2;
649 if(U1<UminLig1) UminLig1=U1;
650 if(V1<VminLig1) VminLig1=V1;
651 if(U2<UminLig2) UminLig2=U2;
652 if(V2<VminLig2) VminLig2=V2;
656 for(z=1; z <= nbTanZon; z++) {
657 const Intf_TangentZone& TangentZone=Interference.ZoneValue(z);
659 for( pz=1; pz<=TangentZone.NumberOfPoints(); pz++) {
660 SectionPointToParameters(TangentZone.GetPoint(pz),Poly1,Poly2,U1,V1,U2,V2);
667 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
669 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
670 NbLigCalculee = SLin.Length();
671 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
673 for( l = 1; (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne); l++) {
674 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
676 if (IsPointOnLine(StartPOn2S, testwline, Deflection)) {
677 dminiPointLigne = 0.0;
681 if(dminiPointLigne > SeuildPointLigne) {
682 PW.Perform(StartParams,UminLig1,VminLig1,UminLig2,VminLig2,UmaxLig1,VmaxLig1,UmaxLig2,VmaxLig2);
684 if(PW.NbPoints()>2) {
685 RejetLigne = Standard_False;
686 Point3dDebut = PW.Value(1).Value();
687 const IntSurf_PntOn2S& PointFin = PW.Value(PW.NbPoints());
688 Point3dFin = PointFin.Value();
689 for(ver=1 ; ver<= NbLigCalculee ; ver++) {
690 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
692 // Check end point if it is on existing line.
693 // Start point is checked before.
694 if (IsPointOnLine(PointFin, verwline, Deflection)) {
695 RejetLigne = Standard_True;
699 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
700 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
701 if( (Point3dDebut.Distance(verPointDebut.Value()) < TolTangency) ||
702 (Point3dFin.Distance(verPointFin.Value()) < TolTangency))
704 RejetLigne = Standard_True;
711 DublicateOfLinesProcessing(PW, ver, SLin, RejetLigne);
715 IntSurf_TypeTrans trans1,trans2;
716 Standard_Real locu,locv;
717 gp_Vec norm1,norm2,d1u,d1v;
719 Standard_Integer indextg;
720 gp_Vec tgline(PW.TangentAtLine(indextg));
721 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
722 Surf1->D1(locu,locv,ptbid,d1u,d1v);
723 norm1 = d1u.Crossed(d1v);
724 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
725 Surf2->D1(locu,locv,ptbid,d1u,d1v);
726 norm2 = d1u.Crossed(d1v);
727 if(tgline.DotCross(norm2,norm1)>0.) {
728 trans1 = IntSurf_Out;
733 trans2 = IntSurf_Out;
736 Standard_Real TolTang = TolTangency;
737 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
738 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang);
739 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang);
741 if(wline->NbVertex() == 0) {
743 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
744 POn2S.Parameters(pu1,pv1,pu2,pv2);
745 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
746 vtx.SetParameters(pu1,pv1,pu2,pv2);
748 wline->AddVertex(vtx);
750 POn2S = PW.Line()->Value(wline->NbPnts());
751 POn2S.Parameters(pu1,pv1,pu2,pv2);
752 vtx.SetValue(Point3dFin,TolTang,Standard_False);
753 vtx.SetParameters(pu1,pv1,pu2,pv2);
754 vtx.SetParameter(wline->NbPnts());
755 wline->AddVertex(vtx);
758 AddWLine(SLin, wline, Deflection);
759 empt = Standard_False;
763 }// dminiPointLigne > SeuildPointLigne
769 //==================================================================================
770 // function : Perform
772 //==================================================================================
773 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
774 const IntPatch_Polyhedron& Poly1,
775 const Handle(Adaptor3d_TopolTool)& D1,
776 const Standard_Real TolTangency,
777 const Standard_Real Epsilon,
778 const Standard_Real Deflection,
779 const Standard_Real Increment)
781 IntPatch_InterferencePolyhedron Interference(Poly1);
782 empt = Standard_True;
783 done = Standard_True;
786 Standard_Integer nbLigSec = Interference.NbSectionLines();
787 Standard_Integer nbTanZon = Interference.NbTangentZones();
789 Standard_Integer NbPntOn2SOnLine;
790 Standard_Integer NbLigCalculee = 0;
792 Standard_Real U1,U2,V1,V2;
793 Standard_Real pu1,pu2,pv1,pv2;
795 TColStd_Array1OfReal StartParams(1,4);
796 IntWalk_PWalking PW(Surf1,Surf1,TolTangency,Epsilon,Deflection,Increment);
798 Standard_Real SeuildPointLigne = 15.0 * Increment * Increment; //-- 10 est insuffisant
799 Standard_Real incidence;
800 Standard_Real dminiPointLigne;
802 Standard_Boolean HasStartPoint,RejetLigne;
804 IntSurf_PntOn2S StartPOn2S;
806 Standard_Integer ver;
808 gp_Pnt Point3dDebut,Point3dFin;
812 for( ls = 1; ls <= nbLigSec; ls++) {
813 const Intf_SectionLine& LineSec=Interference.LineValue(ls);
814 Standard_Integer nbp = LineSec.NumberOfPoints();
815 Standard_Integer nbps2 = (nbp>3)? (nbp/2) : 1;
816 Standard_Integer NombreDePointsDeDepartDuCheminement = 0;
817 Standard_Integer IndicePointdeDepart1 = 0, IndicePointdeDepart2 = 0;
819 NombreDePointsDeDepartDuCheminement++;
820 if(NombreDePointsDeDepartDuCheminement == 1) {
822 Standard_Integer nsp1;
823 for( nsp1= nbp/2; nsp1 >= 1; nsp1--) {
824 SectionPointToParameters(LineSec.GetPoint(nsp1),Poly1,Poly1,U1,V1,U2,V2);
825 Standard_Real CurrentIncidence = Abs(U1-U2)+Abs(V1-V2);
826 if(CurrentIncidence > incidence) {
828 incidence = CurrentIncidence;
831 for( nsp1 = nbp/2; nsp1 <= nbp; nsp1++) {
832 SectionPointToParameters(LineSec.GetPoint(nsp1),Poly1,Poly1,U1,V1,U2,V2);
833 Standard_Real CurrentIncidence = Abs(U1-U2)+Abs(V1-V2);
834 if(CurrentIncidence > incidence) {
836 incidence = CurrentIncidence;
841 NombreDePointsDeDepartDuCheminement=3;
843 IndicePointdeDepart1 = nbps2;
845 else if(NombreDePointsDeDepartDuCheminement == 2) {
846 if(IndicePointdeDepart1 == 1) {
848 IndicePointdeDepart2 = nbps2;
852 IndicePointdeDepart2 = 1;
856 if(IndicePointdeDepart1 == nbp)
857 nbps2 = (IndicePointdeDepart1+IndicePointdeDepart2)/2;
862 SectionPointToParameters(LineSec.GetPoint(nbps2),Poly1,Poly1,U1,V1,U2,V2);
869 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
870 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
872 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
873 if(Abs(pu1-pu2)>1e-7 || Abs(pv1-pv2)>1e-7) {
874 NbLigCalculee = SLin.Length();
876 for( l = 1; (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne); l++) {
877 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
878 if( (testwline->IsOutSurf1Box(gp_Pnt2d(pu1,pv1))==Standard_False) &&
879 (testwline->IsOutSurf2Box(gp_Pnt2d(pu2,pv2))==Standard_False) &&
880 (testwline->IsOutBox(StartPOn2S.Value())==Standard_False) ) {
881 NbPntOn2SOnLine = testwline->NbPnts();
883 for( ll=1; (ll < NbPntOn2SOnLine) && (dminiPointLigne >= SeuildPointLigne); ll++) {
884 Standard_Real t,Au1,Av1,Au2,Av2,Bu1,Bv1,Bu2,Bv2;
885 testwline->Point(ll).Parameters(Au1,Av1,Au2,Av2);
886 testwline->Point(ll+1).Parameters(Bu1,Bv1,Bu2,Bv2);
902 if((pu1>=Au1) && (pu1<=Bu1) && (pv1>=Av1) && (pv1<=Bv1))
903 dminiPointLigne = 0.0;
905 if((pu2>=Au1) && (pu2<=Bu1) && (pv2>=Av1) && (pv2<=Bv1))
906 dminiPointLigne = 0.0;
912 if(dminiPointLigne > SeuildPointLigne) {
913 PW.Perform(StartParams);
915 if(PW.NbPoints()>2) {
916 RejetLigne = Standard_False;
917 Point3dDebut = PW.Value(1).Value();
918 Point3dFin = PW.Value(PW.NbPoints()).Value();
919 for(ver=1 ; ver<= NbLigCalculee ; ver++) {
920 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
921 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
922 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
923 if( (Point3dDebut.Distance(verPointDebut.Value()) < TolTangency) ||
924 (Point3dFin.Distance(verPointFin.Value()) < TolTangency))
926 RejetLigne = Standard_True;
933 DublicateOfLinesProcessing(PW, ver, SLin, RejetLigne);
937 IntSurf_TypeTrans trans1,trans2;
938 Standard_Real locu,locv;
939 gp_Vec norm1,norm2,d1u,d1v;
941 Standard_Integer indextg;
942 gp_Vec tgline(PW.TangentAtLine(indextg));
943 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
944 Surf1->D1(locu,locv,ptbid,d1u,d1v);
945 norm1 = d1u.Crossed(d1v);
946 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
947 Surf1->D1(locu,locv,ptbid,d1u,d1v);
948 norm2 = d1u.Crossed(d1v);
949 if (tgline.DotCross(norm2,norm1)>0.) {
950 trans1 = IntSurf_Out;
955 trans2 = IntSurf_Out;
958 IntSurf_LineOn2S LineOn2S;
959 Standard_Integer nbpw,imin,imax,i;
960 nbpw = PW.Line()->NbPoints();
961 Standard_Real u1,v1,u2,v2;
966 const IntSurf_PntOn2S& Pi = PW.Line()->Value(i);
967 Pi.Parameters(u1,v1,u2,v2);
968 } while((i<nbpw)&&(Abs(u1-u2)<=1e-6 && Abs(v1-v2)<=1e-6));
977 const IntSurf_PntOn2S& Pi = PW.Line()->Value(i);
978 Pi.Parameters(u1,v1,u2,v2);
979 } while((i>2)&&(Abs(u1-u2)<=1e-6 && Abs(v1-v2)<=1e-6));
985 Handle(IntSurf_LineOn2S) PWLine = new IntSurf_LineOn2S();
986 for(i=imin;i<=imax;i++)
987 PWLine->Add(PW.Line()->Value(i));
989 Standard_Real TolTang = TolTangency;
990 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PWLine,Standard_False,trans1,trans2);
991 const IntSurf_PntOn2S& POn2SDeb = wline->Point(1);
992 const IntSurf_PntOn2S& POn2SFin = wline->Point(wline->NbPnts());
993 if((POn2SDeb.Value()).Distance(POn2SFin.Value()) <= TolTangency) {
994 Standard_Real u1t,v1t,u2t,v2t;
995 POn2SDeb.Parameters(u1t,v1t,u2t,v2t);
997 vtx.SetValue(POn2SDeb.Value(),TolTang,Standard_False);
998 vtx.SetParameters(u2t,v2t,u1t,v1t);
999 vtx.SetParameter(wline->NbPnts());
1000 wline->SetPoint(wline->NbPnts(),vtx);
1002 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf1,Standard_True,TolTang);
1003 if(wline->NbVertex() == 0) {
1005 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
1006 POn2S.Parameters(pu1,pv1,pu2,pv2);
1007 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
1008 vtx.SetParameters(pu1,pv1,pu2,pv2);
1009 vtx.SetParameter(1);
1010 wline->AddVertex(vtx);
1012 POn2S = PW.Line()->Value(wline->NbPnts());
1013 POn2S.Parameters(pu1,pv1,pu2,pv2);
1014 vtx.SetValue(Point3dFin,TolTang,Standard_False);
1015 vtx.SetParameters(pu1,pv1,pu2,pv2);
1016 vtx.SetParameter(wline->NbPnts());
1017 wline->AddVertex(vtx);
1020 empt = Standard_False;
1025 }// dminiPointLigne > SeuildPointLigne
1028 } while(nbp>5 && NombreDePointsDeDepartDuCheminement<3);
1033 for( z = 1; z <= nbTanZon; z++) {
1034 const Intf_TangentZone& TangentZone=Interference.ZoneValue(z);
1035 for(Standard_Integer pz=1; pz<=TangentZone.NumberOfPoints(); pz++) {
1036 SectionPointToParameters(TangentZone.GetPoint(pz),Poly1,Poly1,U1,V1,U2,V2);
1038 StartParams(1) = U1;
1039 StartParams(2) = V1;
1040 StartParams(3) = U2;
1041 StartParams(4) = V2;
1043 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
1045 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
1046 if(Abs(pu1-pu2)>1e-7 || Abs(pv1-pv2)>1e-7) {
1047 NbLigCalculee = SLin.Length();
1048 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
1050 for( l = 1; (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne); l++) {
1051 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
1052 if( (testwline->IsOutSurf1Box(gp_Pnt2d(pu1,pv1))==Standard_False) &&
1053 (testwline->IsOutSurf2Box(gp_Pnt2d(pu2,pv2))==Standard_False) &&
1054 (testwline->IsOutBox(StartPOn2S.Value())==Standard_False) ) {
1055 NbPntOn2SOnLine = testwline->NbPnts();
1056 Standard_Integer ll;
1057 for( ll = 1; (ll < NbPntOn2SOnLine) && (dminiPointLigne >= SeuildPointLigne); ll++) {
1058 Standard_Real t,Au1,Av1,Au2,Av2,Bu1,Bv1,Bu2,Bv2;
1059 testwline->Point(ll).Parameters(Au1,Av1,Au2,Av2);
1060 testwline->Point(ll+1).Parameters(Bu1,Bv1,Bu2,Bv2);
1075 if((pu1>=Au1) && (pu1<=Bu1) && (pv1>=Av1) && (pv1<=Bv1))
1076 dminiPointLigne = 0.0;
1078 if((pu2>=Au1) && (pu2<=Bu1) && (pv2>=Av1) && (pv2<=Bv1))
1079 dminiPointLigne = 0.0;
1085 if(dminiPointLigne > SeuildPointLigne) {
1086 PW.Perform(StartParams);
1088 if(PW.NbPoints()>2) {
1089 RejetLigne = Standard_False;
1090 Point3dDebut = PW.Value(1).Value();
1091 Point3dFin = PW.Value(PW.NbPoints()).Value();
1092 for( ver = 1 ; ver<= NbLigCalculee ; ver++) {
1093 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
1094 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
1095 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
1096 if( (Point3dDebut.Distance(verPointDebut.Value()) < TolTangency) ||
1097 (Point3dFin.Distance(verPointFin.Value()) < TolTangency))
1099 RejetLigne = Standard_True;
1106 DublicateOfLinesProcessing(PW, ver, SLin, RejetLigne);
1110 IntSurf_TypeTrans trans1,trans2;
1111 Standard_Real locu,locv;
1112 gp_Vec norm1,norm2,d1u,d1v;
1114 Standard_Integer indextg;
1115 gp_Vec tgline(PW.TangentAtLine(indextg));
1116 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
1117 Surf1->D1(locu,locv,ptbid,d1u,d1v);
1118 norm1 = d1u.Crossed(d1v);
1119 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
1120 Surf1->D1(locu,locv,ptbid,d1u,d1v);
1121 norm2 = d1u.Crossed(d1v);
1122 if(tgline.DotCross(norm2,norm1)>0.) {
1123 trans1 = IntSurf_Out;
1124 trans2 = IntSurf_In;
1127 trans1 = IntSurf_In;
1128 trans2 = IntSurf_Out;
1131 IntSurf_LineOn2S LineOn2S;
1132 Standard_Integer nbp,imin,imax,i;
1133 nbp = PW.Line()->NbPoints();
1134 Standard_Real u1,v1,u2,v2;
1139 const IntSurf_PntOn2S& Pi = PW.Line()->Value(i);
1140 Pi.Parameters(u1,v1,u2,v2);
1141 } while((i<nbp)&&(Abs(u1-u2)<=1e-6 && Abs(v1-v2)<=1e-6));
1150 const IntSurf_PntOn2S& Pi = PW.Line()->Value(i);
1151 Pi.Parameters(u1,v1,u2,v2);
1152 } while((i>2)&&(Abs(u1-u2)<=1e-6 && Abs(v1-v2)<=1e-6));
1158 Handle(IntSurf_LineOn2S) PWLine = new IntSurf_LineOn2S();
1159 for(i=imin;i<=imax;i++)
1160 PWLine->Add(PW.Line()->Value(i));
1162 Standard_Real TolTang = TolTangency;
1163 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PWLine,Standard_False,trans1,trans2);
1164 const IntSurf_PntOn2S& POn2SDeb = wline->Point(1);
1165 const IntSurf_PntOn2S& POn2SFin = wline->Point(wline->NbPnts());
1166 if((POn2SDeb.Value()).Distance(POn2SFin.Value()) <= TolTangency) {
1167 Standard_Real u1t,v1t,u2t,v2t;
1168 POn2SDeb.Parameters(u1t,v1t,u2t,v2t);
1170 vtx.SetValue(POn2SDeb.Value(),TolTang,Standard_False);
1171 vtx.SetParameters(u2t,v2t,u1t,v1t);
1172 vtx.SetParameter(wline->NbPnts());
1173 wline->SetPoint(wline->NbPnts(),vtx);
1176 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf1,Standard_True,TolTang);
1178 if(wline->NbVertex() == 0) {
1180 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
1181 POn2S.Parameters(pu1,pv1,pu2,pv2);
1182 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
1183 vtx.SetParameters(pu1,pv1,pu2,pv2);
1184 vtx.SetParameter(1);
1185 wline->AddVertex(vtx);
1187 POn2S = PW.Line()->Value(wline->NbPnts());
1188 POn2S.Parameters(pu1,pv1,pu2,pv2);
1189 vtx.SetValue(Point3dFin,TolTang,Standard_False);
1190 vtx.SetParameters(pu1,pv1,pu2,pv2);
1191 vtx.SetParameter(wline->NbPnts());
1192 wline->AddVertex(vtx);
1196 empt = Standard_False;
1201 }// dminiPointLigne > SeuildPointLigne
1208 //==================================================================================
1209 // function : NewLine
1211 //==================================================================================
1212 Handle(IntPatch_Line) IntPatch_PrmPrmIntersection::NewLine (const Handle(Adaptor3d_HSurface)& Surf1,
1213 const Handle(Adaptor3d_HSurface)& Surf2,
1214 const Standard_Integer NumLine,
1215 const Standard_Integer Low,
1216 const Standard_Integer High,
1217 const Standard_Integer NbPntsToInsert) const
1219 Standard_Integer NbPnts = NbPntsToInsert + High - Low;
1220 if(NumLine>NbLines() || NumLine<1 || Low>=High )
1221 Standard_OutOfRange::Raise(" IntPatch_PrmPrmIntersection NewLine ");
1222 //------------------------------------------------------------------
1223 //-- Indice : Low Low+1 I I+1 High --
1225 //-- Abs.Curv. : S(Low) S(I) S(I+1) S(High) --
1227 //-- On echantillonne a abcisse curviligne --
1229 //-- L abcisse est calculee sur les params U1,V1 --
1230 //------------------------------------------------------------------
1231 TColStd_Array1OfReal U1(Low,High);
1232 TColStd_Array1OfReal V1(Low,High);
1233 TColStd_Array1OfReal U2(Low,High);
1234 TColStd_Array1OfReal V2(Low,High);
1235 TColStd_Array1OfReal AC(Low,High);
1238 Handle(IntPatch_WLine) TheLine = Handle(IntPatch_WLine)::DownCast(Line(NumLine));
1239 const IntSurf_PntOn2S& Point=TheLine->Point(Low);
1240 Standard_Real u1,v1,u2,v2;
1241 Point.Parameters(u1,v1,u2,v2);
1248 IntWalk_PWalking PW(Surf1,Surf2,0.000001,0.000001,0.001,0.001);
1251 for(i=Low+1; i<=High; i++)
1253 const IntSurf_PntOn2S& Pointi=TheLine->Point(i);
1254 Pointi.Parameters(u1,v1,u2,v2);
1260 Standard_Real du1=u1-U1(i-1);
1261 Standard_Real dv1=v1-V1(i-1);
1263 AC(i) = AC(i-1) + Sqrt((du1*du1)+(dv1*dv1));
1266 Handle(IntSurf_LineOn2S) ResultPntOn2SLine = new IntSurf_LineOn2S();
1268 IntSurf_PntOn2S StartPOn2S;
1269 TColStd_Array1OfReal StartParams(1,4);
1271 ResultPntOn2SLine->Add(TheLine->Point(Low));
1273 ds = AC(High) / (NbPnts-1);
1274 Standard_Integer Indice = Low;
1276 Standard_Real dsmin = ds*0.3;
1277 Standard_Real smax = AC(High);
1279 for(i=2,s=ds; (i<NbPnts)&&(s<smax); i++,s+=ds)
1281 while(AC(Indice+1) <= s)
1283 ResultPntOn2SLine->Add(TheLine->Point(Indice));
1286 Standard_Real a = s - AC(Indice);
1287 Standard_Real b = AC(Indice+1) - s;
1288 Standard_Real nab = 1.0/(a+b);
1289 //----------------------------------------------------------
1290 //-- Verification : Si Dist au prochain point < dsmin --
1291 //-- Si Dist au precedent point < dsmin --
1293 //----------------------------------------------------------
1294 if((nab > ds)&&(a>dsmin)&&(b>dsmin))
1296 StartParams(1) = (U1(Indice) * b + U1(Indice+1) * a) * nab;
1297 StartParams(2) = (V1(Indice) * b + V1(Indice+1) * a) * nab;
1298 StartParams(3) = (U2(Indice) * b + U2(Indice+1) * a) * nab;
1299 StartParams(4) = (V2(Indice) * b + V2(Indice+1) * a) * nab;
1301 Standard_Boolean HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
1303 ResultPntOn2SLine->Add(StartPOn2S);
1309 ResultPntOn2SLine->Add(TheLine->Point(High));
1311 return(new IntPatch_WLine(ResultPntOn2SLine,Standard_False));
1314 //==================================================================================
1315 // function : SectionPointToParameters
1317 //==================================================================================
1318 void SectionPointToParameters(const Intf_SectionPoint& Sp,
1319 const IntPatch_Polyhedron& Poly1,
1320 const IntPatch_Polyhedron& Poly2,
1327 Standard_Integer Adr1,Adr2;
1328 Standard_Real Param,u,v;
1331 Standard_Integer Pt1,Pt2,Pt3;
1333 Sp.InfoFirst(typ,Adr1,Adr2,Param);
1335 case Intf_VERTEX: //-- Adr1 est le numero du vertex
1337 Poly1.Parameters(Adr1,u1,v1);
1342 Poly1.Parameters(Adr1,u1,v1);
1343 Poly1.Parameters(Adr2,u,v);
1344 u1+= Param * (u-u1);
1345 v1+= Param * (v-v1);
1350 Standard_Real ua,va,ub,vb,uc,vc,ca,cb,cc,cabc;
1351 Poly1.Triangle(Adr1,Pt1,Pt2,Pt3);
1352 gp_Pnt PA(Poly1.Point(Pt1));
1353 gp_Pnt PB(Poly1.Point(Pt2));
1354 gp_Pnt PC(Poly1.Point(Pt3));
1355 Poly1.Parameters(Pt1,ua,va);
1356 Poly1.Parameters(Pt2,ub,vb);
1357 Poly1.Parameters(Pt3,uc,vc);
1358 gp_Vec Normale(gp_Vec(PA,PB).Crossed(gp_Vec(PA,PC)));
1359 cc = (gp_Vec(PA,PB).Crossed(gp_Vec(PA,P))).Dot(Normale);
1360 ca = (gp_Vec(PB,PC).Crossed(gp_Vec(PB,P))).Dot(Normale);
1361 cb = (gp_Vec(PC,PA).Crossed(gp_Vec(PC,P))).Dot(Normale);
1362 cabc = ca + cb + cc;
1364 ca/=cabc; cb/=cabc; cc/=cabc;
1366 u1 = ca * ua + cb * ub + cc * uc;
1367 v1 = ca * va + cb * vb + cc * vc;
1372 //-- cout<<" Default dans SectionPointToParameters "<<endl;
1378 Sp.InfoSecond(typ,Adr1,Adr2,Param);
1380 case Intf_VERTEX: //-- Adr1 est le numero du vertex
1382 Poly2.Parameters(Adr1,u2,v2);
1387 Poly2.Parameters(Adr1,u2,v2);
1388 Poly2.Parameters(Adr2,u,v);
1389 u2+= Param * (u-u2);
1390 v2+= Param * (v-v2);
1395 Standard_Real ua,va,ub,vb,uc,vc,ca,cb,cc,cabc;
1396 Poly2.Triangle(Adr1,Pt1,Pt2,Pt3);
1397 gp_Pnt PA(Poly2.Point(Pt1));
1398 gp_Pnt PB(Poly2.Point(Pt2));
1399 gp_Pnt PC(Poly2.Point(Pt3));
1400 Poly2.Parameters(Pt1,ua,va);
1401 Poly2.Parameters(Pt2,ub,vb);
1402 Poly2.Parameters(Pt3,uc,vc);
1403 gp_Vec Normale(gp_Vec(PA,PB).Crossed(gp_Vec(PA,PC)));
1404 cc = (gp_Vec(PA,PB).Crossed(gp_Vec(PA,P))).Dot(Normale);
1405 ca = (gp_Vec(PB,PC).Crossed(gp_Vec(PB,P))).Dot(Normale);
1406 cb = (gp_Vec(PC,PA).Crossed(gp_Vec(PC,P))).Dot(Normale);
1407 cabc = ca + cb + cc;
1409 ca/=cabc; cb/=cabc; cc/=cabc;
1411 u2 = ca * ua + cb * ub + cc * uc;
1412 v2 = ca * va + cb * vb + cc * vc;
1417 //-- cout<<" Default dans SectionPointToParameters "<<endl;
1423 //==================================================================================
1424 // function : RemplitLin
1426 //==================================================================================
1427 void IntPatch_PrmPrmIntersection::RemplitLin(const Standard_Integer x1,
1428 const Standard_Integer y1,
1429 const Standard_Integer z1,
1430 const Standard_Integer x2,
1431 const Standard_Integer y2,
1432 const Standard_Integer z2,
1433 IntPatch_PrmPrmIntersection_T3Bits& Map) const
1436 xg=x1-x2; if(xg<0) xg=-xg;
1437 yg=y1-y2; if(yg<0) yg=-yg;
1438 zg=z1-z2; if(zg<0) zg=-zg;
1439 if(DansGrille(x1) && DansGrille(y1) && DansGrille(z1)) {
1440 Standard_Integer t = GrilleInteger(x1,y1,z1);
1443 if(xg<=1 && yg<=1 && zg<=1) return;
1447 RemplitLin(x1,y1,z1,xg,yg,zg,Map);
1448 RemplitLin(x2,y2,z2,xg,yg,zg,Map);
1451 //==================================================================================
1452 // function : RemplitTri
1454 //==================================================================================
1455 void IntPatch_PrmPrmIntersection::RemplitTri(const Standard_Integer x1,
1456 const Standard_Integer y1,
1457 const Standard_Integer z1,
1458 const Standard_Integer x2,
1459 const Standard_Integer y2,
1460 const Standard_Integer z2,
1461 const Standard_Integer x3,
1462 const Standard_Integer y3,
1463 const Standard_Integer z3,
1464 IntPatch_PrmPrmIntersection_T3Bits& Map) const
1466 if(x1==x2 && x1==x3 && y1==y2 && y1==y3 && z1==z2 && z1==z3) {
1467 if(DansGrille(x1) && DansGrille(y1) && DansGrille(z1)) {
1468 Standard_Integer t = GrilleInteger(x1,y1,z1);
1474 Standard_Integer xg=(x1+x2+x3)/3;
1475 Standard_Integer yg=(y1+y2+y3)/3;
1476 Standard_Integer zg=(z1+z2+z3)/3;
1477 if(xg==x1 && yg==y1 && zg==z1) {
1478 RemplitLin(x1,y1,z1,x2,y2,z2,Map);
1479 RemplitLin(x1,y1,z1,x3,y3,z3,Map);
1482 if(xg==x2 && yg==y2 && zg==z2) {
1483 RemplitLin(x2,y2,z2,x1,y1,z1,Map);
1484 RemplitLin(x2,y2,z2,x3,y3,z3,Map);
1487 if(xg==x3 && yg==y3 && zg==z3) {
1488 RemplitLin(x3,y3,z3,x2,y2,z2,Map);
1489 RemplitLin(x3,y3,z3,x1,y1,z1,Map);
1492 if(DansGrille(xg) && DansGrille(yg) && DansGrille(zg)) {
1493 Standard_Integer t = GrilleInteger(xg,yg,zg);
1496 if(xg!=x3 || yg!=y3 || zg!=z3) RemplitTri(x1,y1,z1, x2,y2,z2, xg,yg,zg, Map);
1497 if(xg!=x1 || yg!=y1 || zg!=z1) RemplitTri(xg,yg,zg, x2,y2,z2, x3,y3,z3, Map);
1498 if(xg!=x2 || yg!=y2 || zg!=z2) RemplitTri(x1,y1,z1, xg,yg,zg, x3,y3,z3, Map);
1502 //==================================================================================
1503 // function : Remplit
1505 //==================================================================================
1506 void IntPatch_PrmPrmIntersection::Remplit(const Standard_Integer a,
1507 const Standard_Integer b,
1508 const Standard_Integer c,
1509 IntPatch_PrmPrmIntersection_T3Bits& Map) const
1511 int iax,iay,iaz,ibx,iby,ibz,icx,icy,icz;
1512 if(a!=-1) Map.Add(a);
1513 if(b!=-1) Map.Add(b);
1514 if(c!=-1) Map.Add(c);
1516 if(a!=-1 && b!=-1 && c!=-1 ) {
1517 IntegerGrille(a,iax,iay,iaz);
1518 IntegerGrille(b,ibx,iby,ibz);
1519 IntegerGrille(c,icx,icy,icz);
1520 RemplitTri(iax,iay,iaz,ibx,iby,ibz,icx,icy,icz,Map);
1526 //=======================================================================
1527 //function : Perform
1529 //=======================================================================
1530 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
1531 const Handle(Adaptor3d_TopolTool)& D1,
1532 const Handle(Adaptor3d_HSurface)& Surf2,
1533 const Handle(Adaptor3d_TopolTool)& D2,
1534 const Standard_Real TolTangency,
1535 const Standard_Real Epsilon,
1536 const Standard_Real Deflection,
1537 const Standard_Real Increment,
1538 IntSurf_ListOfPntOn2S& LOfPnts,
1539 const Standard_Boolean RestrictLine)
1541 if (LOfPnts.IsEmpty()){
1542 done = Standard_True;
1546 empt = Standard_True;
1549 Standard_Real UminLig1,VminLig1,UmaxLig1,VmaxLig1;
1550 Standard_Real UminLig2,VminLig2,UmaxLig2,VmaxLig2;
1551 Standard_Real U1,U2,V1,V2;
1553 UminLig1 = Surf1->FirstUParameter();
1554 VminLig1 = Surf1->FirstVParameter();
1555 UmaxLig1 = Surf1->LastUParameter();
1556 VmaxLig1 = Surf1->LastVParameter();
1557 UminLig2 = Surf2->FirstUParameter();
1558 VminLig2 = Surf2->FirstVParameter();
1559 UmaxLig2 = Surf2->LastUParameter();
1560 VmaxLig2 = Surf2->LastVParameter();
1562 Standard_Real Periods [4];
1563 Periods[0] = (Surf1->IsUPeriodic())? Surf1->UPeriod() : 0.;
1564 Periods[1] = (Surf1->IsVPeriodic())? Surf1->VPeriod() : 0.;
1565 Periods[2] = (Surf2->IsUPeriodic())? Surf2->UPeriod() : 0.;
1566 Periods[3] = (Surf2->IsVPeriodic())? Surf2->VPeriod() : 0.;
1568 IntSurf_ListIteratorOfListOfPntOn2S IterLOP1(LOfPnts);
1569 if (Surf1->IsUClosed() || Surf1->IsVClosed() ||
1570 Surf2->IsUClosed() || Surf2->IsVClosed())
1572 Standard_Real TolPar = Precision::PConfusion();
1573 IntSurf_ListOfPntOn2S AdditionalPnts;
1574 Standard_Real NewU1, NewV1, NewU2, NewV2;
1575 for(; IterLOP1.More(); IterLOP1.Next())
1577 IntSurf_PntOn2S Pnt = IterLOP1.Value();
1578 Pnt.Parameters(U1, V1, U2, V2);
1579 IntSurf_PntOn2S NewPnt;
1580 if (Surf1->IsUClosed())
1582 if (Abs(U1 - Surf1->FirstUParameter()) <= TolPar)
1584 NewU1 = Surf1->LastUParameter();
1585 NewPnt.SetValue( NewU1, V1, U2, V2 );
1586 AdditionalPnts.Append(NewPnt);
1588 else if (Abs(U1 - Surf1->LastUParameter()) <= TolPar)
1590 NewU1 = Surf1->FirstUParameter();
1591 NewPnt.SetValue( NewU1, V1, U2, V2 );
1592 AdditionalPnts.Append(NewPnt);
1595 if (Surf1->IsVClosed())
1597 if (Abs(V1 - Surf1->FirstVParameter()) <= TolPar)
1599 NewV1 = Surf1->LastVParameter();
1600 NewPnt.SetValue( U1, NewV1, U2, V2 );
1601 AdditionalPnts.Append(NewPnt);
1603 else if (Abs(V1 - Surf1->LastVParameter()) <= TolPar)
1605 NewV1 = Surf1->FirstVParameter();
1606 NewPnt.SetValue( U1, NewV1, U2, V2 );
1607 AdditionalPnts.Append(NewPnt);
1610 if (Surf2->IsUClosed())
1612 if (Abs(U2 - Surf2->FirstUParameter()) <= TolPar)
1614 NewU2 = Surf2->LastUParameter();
1615 NewPnt.SetValue( U1, V1, NewU2, V2);
1616 AdditionalPnts.Append(NewPnt);
1618 else if (Abs(U2 - Surf2->LastUParameter()) <= TolPar)
1620 NewU2 = Surf2->FirstUParameter();
1621 NewPnt.SetValue( U1, V1, NewU2, V2);
1622 AdditionalPnts.Append(NewPnt);
1625 if (Surf2->IsVClosed())
1627 if (Abs(V2 - Surf2->FirstVParameter()) <= TolPar)
1629 NewV2 = Surf2->LastVParameter();
1630 NewPnt.SetValue( U1, V1, U2, NewV2 );
1631 AdditionalPnts.Append(NewPnt);
1633 else if (Abs(V2 - Surf2->LastVParameter()) <= TolPar)
1635 NewV2 = Surf2->FirstVParameter();
1636 NewPnt.SetValue( U1, V1, U2, NewV2 );
1637 AdditionalPnts.Append(NewPnt);
1641 //Cut repeated points
1642 for (IterLOP1.Initialize(LOfPnts); IterLOP1.More(); IterLOP1.Next())
1644 IntSurf_PntOn2S aPnt = IterLOP1.Value();
1645 aPnt.Parameters(U1, V1, U2, V2);
1646 IntSurf_ListIteratorOfListOfPntOn2S iter2(AdditionalPnts);
1647 while (iter2.More())
1649 IntSurf_PntOn2S aNewPnt = iter2.Value();
1650 aNewPnt.Parameters(NewU1, NewV1, NewU2, NewV2);
1651 if (Abs(U1 - NewU1) <= TolPar &&
1652 Abs(V1 - NewV1) <= TolPar &&
1653 Abs(U2 - NewU2) <= TolPar &&
1654 Abs(V2 - NewV2) <= TolPar)
1655 AdditionalPnts.Remove(iter2);
1661 LOfPnts.Append(AdditionalPnts);
1664 for(IterLOP1.Initialize(LOfPnts); IterLOP1.More(); IterLOP1.Next()){
1665 IntSurf_PntOn2S Pnt = IterLOP1.Value();
1666 Pnt.Parameters(U1, V1, U2, V2);
1667 if(U1>UmaxLig1) UmaxLig1=U1;
1668 if(V1>VmaxLig1) VmaxLig1=V1;
1669 if(U2>UmaxLig2) UmaxLig2=U2;
1670 if(V2>VmaxLig2) VmaxLig2=V2;
1672 if(U1<UminLig1) UminLig1=U1;
1673 if(V1<VminLig1) VminLig1=V1;
1674 if(U2<UminLig2) UminLig2=U2;
1675 if(V2<VminLig2) VminLig2=V2;
1678 Standard_Real SeuildPointLigne = 15.0 * Increment * Increment;
1680 Standard_Integer NbLigCalculee = 0, ver;
1681 Standard_Real pu1,pu2,pv1,pv2, dminiPointLigne;
1682 Standard_Boolean HasStartPoint,RejetLigne;
1683 IntSurf_PntOn2S StartPOn2S;
1684 gp_Pnt Point3dDebut,Point3dFin;
1686 TColStd_Array1OfReal StartParams(1,4);
1687 IntWalk_PWalking PW(Surf1,Surf2,TolTangency,Epsilon,Deflection,Increment);
1689 IntSurf_ListIteratorOfListOfPntOn2S IterLOP2(LOfPnts);
1690 for(; IterLOP2.More(); IterLOP2.Next() ){
1692 IntSurf_PntOn2S cPnt = IterLOP2.Value();
1693 cPnt.Parameters(U1, V1, U2, V2);
1695 StartParams(1) = U1;
1696 StartParams(2) = V1;
1697 StartParams(3) = U2;
1698 StartParams(4) = V2;
1700 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
1701 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
1703 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
1704 NbLigCalculee = SLin.Length();
1706 for( l = 1; (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne); l++) {
1707 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
1709 if (IsPointOnLine(StartPOn2S, testwline, Deflection)) {
1710 dminiPointLigne = 0.0;
1714 if(dminiPointLigne > SeuildPointLigne) {
1715 PW.Perform(StartParams,UminLig1,VminLig1,UminLig2,VminLig2,UmaxLig1,VmaxLig1,UmaxLig2,VmaxLig2);
1719 //Try to extend the intersection line to boundary, if it is possibly
1720 Standard_Boolean hasBeenAdded = PW.PutToBoundary(Surf1, Surf2);
1722 RejetLigne = Standard_False;
1723 Point3dDebut = PW.Value(1).Value();
1724 const IntSurf_PntOn2S& PointFin = PW.Value(PW.NbPoints());
1725 Point3dFin = PointFin.Value();
1726 for( ver = 1 ; ver<= NbLigCalculee ; ver++) {
1727 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
1729 // Check end point if it is on existing line.
1730 // Start point is checked before.
1731 if (IsPointOnLine(PointFin, verwline, Deflection)) {
1732 RejetLigne = Standard_True;
1736 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
1737 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
1738 if( (Point3dDebut.Distance(verPointDebut.Value()) <= TolTangency) &&
1739 (Point3dFin.Distance(verPointFin.Value()) <= TolTangency))
1741 RejetLigne = Standard_True;
1748 DublicateOfLinesProcessing(PW, ver, SLin, RejetLigne);
1752 IntSurf_TypeTrans trans1,trans2;
1753 Standard_Real locu,locv;
1754 gp_Vec norm1,norm2,d1u,d1v;
1756 Standard_Integer indextg;
1757 gp_Vec tgline(PW.TangentAtLine(indextg));
1758 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
1759 Surf1->D1(locu,locv,ptbid,d1u,d1v);
1760 norm1 = d1u.Crossed(d1v);
1761 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
1762 Surf2->D1(locu,locv,ptbid,d1u,d1v);
1763 norm2 = d1u.Crossed(d1v);
1764 if( tgline.DotCross(norm2,norm1) >= 0. ) {
1765 trans1 = IntSurf_Out;
1766 trans2 = IntSurf_In;
1769 trans1 = IntSurf_In;
1770 trans2 = IntSurf_Out;
1773 Standard_Real TolTang = TolTangency;
1774 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
1776 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang,hasBeenAdded);
1777 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang,hasBeenAdded);
1780 if(wline->NbVertex() == 0) {
1782 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
1783 POn2S.Parameters(pu1,pv1,pu2,pv2);
1784 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
1785 vtx.SetParameters(pu1,pv1,pu2,pv2);
1786 vtx.SetParameter(1);
1787 wline->AddVertex(vtx);
1789 POn2S = PW.Line()->Value(wline->NbPnts());
1790 POn2S.Parameters(pu1,pv1,pu2,pv2);
1791 vtx.SetValue(Point3dFin,TolTang,Standard_False);
1792 vtx.SetParameters(pu1,pv1,pu2,pv2);
1793 vtx.SetParameter(wline->NbPnts());
1794 wline->AddVertex(vtx);
1797 SeveralWlinesProcessing(Surf1, Surf2, SLin, Periods, trans1, trans2,
1798 TolTang, Max(PW.MaxStep(0), PW.MaxStep(1)),
1799 Max(PW.MaxStep(2), PW.MaxStep(3)), wline);
1801 AddWLine(SLin, wline, Deflection);
1802 empt = Standard_False;
1806 }// dminiPointLigne > SeuildPointLigne
1808 }// for( IterLOP ...
1809 done = Standard_True;
1812 //=======================================================================
1813 //function : Perform
1815 //=======================================================================
1816 void IntPatch_PrmPrmIntersection::Perform(const Handle(Adaptor3d_HSurface)& Surf1,
1817 const Handle(Adaptor3d_TopolTool)& D1,
1818 const Handle(Adaptor3d_HSurface)& Surf2,
1819 const Handle(Adaptor3d_TopolTool)& D2,
1820 const Standard_Real U1Depart,
1821 const Standard_Real V1Depart,
1822 const Standard_Real U2Depart,
1823 const Standard_Real V2Depart,
1824 const Standard_Real TolTangency,
1825 const Standard_Real Epsilon,
1826 const Standard_Real Deflection,
1827 const Standard_Real Increment)
1829 // Standard_Integer NbU1 = D1->NbSamplesU();
1830 // Standard_Integer NbV1 = D1->NbSamplesV();
1831 // Standard_Integer NbU2 = D2->NbSamplesU();
1832 // Standard_Integer NbV2 = D2->NbSamplesV();
1834 //-- Traitement des Lignes de sections
1835 empt = Standard_True;
1836 done = Standard_True;
1839 //------------------------------------------------------------
1841 Standard_Real pu1,pu2,pv1,pv2;
1843 TColStd_Array1OfReal StartParams(1,4);
1845 // Standard_Integer MaxOscill = NbU1;
1846 // if(MaxOscill < NbU2) MaxOscill=NbU2;
1847 // if(MaxOscill < NbV1) MaxOscill=NbV1;
1848 // if(MaxOscill < NbV2) MaxOscill=NbV2;
1850 // Standard_Real nIncrement=Increment;
1851 // if(MaxOscill>10) {
1852 // #ifdef OCCT_DEBUG
1853 // cout<<"\n IntPatch_PrmPrmIntersection.gxx : Increment:"<<Increment<<" -> "<<Increment/(0.5*MaxOscill)<<endl;
1855 // nIncrement/=0.5*MaxOscill;
1858 IntWalk_PWalking PW(Surf1,Surf2,
1862 Increment); //nIncrement);
1865 //Standard_Real SeuildPointLigne = 15.0 * Increment * Increment; //-- 10 est insuffisant
1866 //Standard_Real incidence;
1867 //Standard_Real dminiPointLigne;
1869 Standard_Boolean HasStartPoint;//,RejetLigne;
1871 IntSurf_PntOn2S StartPOn2S;
1873 //Standard_Integer ver;
1875 gp_Pnt Point3dDebut,Point3dFin;
1877 //------------------------------------------------------------
1879 StartParams(1) = U1Depart;
1880 StartParams(2) = V1Depart;
1881 StartParams(3) = U2Depart;
1882 StartParams(4) = V2Depart;
1884 //-----------------------------------------------------------------------
1885 //-- Calcul du premier point de cheminement a partir du point approche --
1886 //-----------------------------------------------------------------------
1887 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
1889 //-------------------------------------------------
1890 //-- Un point a ete trouve --
1891 //-- On verifie qu il n appartient pas --
1892 //-- a une ligne de cheminement deja calculee. --
1893 //-------------------------------------------------
1895 PW.Perform(StartParams);
1898 Point3dDebut = PW.Value(1).Value();
1899 Point3dFin = PW.Value(PW.NbPoints()).Value();
1901 IntSurf_TypeTrans trans1,trans2;
1902 Standard_Real locu,locv;
1903 gp_Vec norm1,norm2,d1u,d1v;
1905 Standard_Integer indextg;
1906 gp_Vec tgline(PW.TangentAtLine(indextg));
1907 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
1908 Surf1->D1(locu,locv,ptbid,d1u,d1v);
1909 norm1 = d1u.Crossed(d1v);
1910 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
1911 Surf2->D1(locu,locv,ptbid,d1u,d1v);
1912 norm2 = d1u.Crossed(d1v);
1913 if (tgline.DotCross(norm2,norm1)>0.) {
1914 trans1 = IntSurf_Out;
1915 trans2 = IntSurf_In;
1918 trans1 = IntSurf_In;
1919 trans2 = IntSurf_Out;
1924 Standard_Real TolTang = TolTangency;
1925 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
1926 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang);
1927 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang);
1930 if(wline->NbVertex() == 0) {
1932 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
1933 POn2S.Parameters(pu1,pv1,pu2,pv2);
1934 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
1935 vtx.SetParameters(pu1,pv1,pu2,pv2);
1936 vtx.SetParameter(1);
1937 wline->AddVertex(vtx);
1939 POn2S = PW.Line()->Value(wline->NbPnts());
1940 POn2S.Parameters(pu1,pv1,pu2,pv2);
1941 vtx.SetValue(Point3dFin,TolTang,Standard_False);
1942 vtx.SetParameters(pu1,pv1,pu2,pv2);
1943 vtx.SetParameter(wline->NbPnts());
1944 wline->AddVertex(vtx);
1949 empt = Standard_False;
1954 //==================================================================================
1955 // function : AdjustOnPeriodic
1957 //==================================================================================
1958 void AdjustOnPeriodic(const Handle(Adaptor3d_HSurface)& Surf1,
1959 const Handle(Adaptor3d_HSurface)& Surf2,
1960 IntPatch_SequenceOfLine& aSLin)
1962 Standard_Boolean bIsPeriodic[4], bModified, bIsNull, bIsPeriod;
1963 Standard_Integer i, j, k, aNbLines, aNbPx, aIndx, aIndq;
1964 Standard_Real aPeriod[4], dPeriod[4], ux[4], uq[4], aEps, du;
1966 aEps=Precision::Confusion();
1968 for (k=0; k<4; ++k) {
1972 bIsPeriodic[0]=Surf1->IsUPeriodic();
1973 bIsPeriodic[1]=Surf1->IsVPeriodic();
1974 bIsPeriodic[2]=Surf2->IsUPeriodic();
1975 bIsPeriodic[3]=Surf2->IsVPeriodic();
1977 if (bIsPeriodic[0]){
1978 aPeriod[0]=Surf1->UPeriod();
1980 if (bIsPeriodic[1]){
1981 aPeriod[1]=Surf1->VPeriod();
1983 if (bIsPeriodic[2]){
1984 aPeriod[2]=Surf2->UPeriod();
1986 if (bIsPeriodic[3]){
1987 aPeriod[3]=Surf2->VPeriod();
1990 for (k=0; k<4; ++k) {
1991 dPeriod[k]=0.25*aPeriod[k];
1994 aNbLines=aSLin.Length();
1995 for (i=1; i<=aNbLines; ++i) {
1996 Handle(IntPatch_WLine) aIL=Handle(IntPatch_WLine)::DownCast(aSLin.Value(i));
1997 Handle(IntSurf_LineOn2S) aL=aIL->Curve();
1999 aNbPx=aL->NbPoints();
2004 for (j=0; j<2; ++j) {
2005 bModified=Standard_False;
2013 const IntSurf_PntOn2S& aPSx=aL->Value(aIndx);
2014 const IntSurf_PntOn2S& aPSq=aL->Value(aIndq);
2016 aPSx.Parameters(ux[0], ux[1], ux[2], ux[3]);
2017 aPSq.Parameters(uq[0], uq[1], uq[2], uq[3]);
2019 for (k=0; k<4; ++k) {
2020 bIsNull=Standard_False;
2021 bIsPeriod=Standard_False;
2023 if (!bIsPeriodic[k]) {
2027 if (fabs(ux[k])<aEps) {
2028 bModified=Standard_True;
2029 bIsNull=Standard_True;
2032 else if (fabs(ux[k]-aPeriod[k])<aEps) {
2033 bModified=Standard_True;
2034 bIsPeriod=Standard_True;
2038 du=fabs(ux[k]-uq[k]);
2039 if (du > dPeriod[k]) {
2048 }//for (k=0; k<4; ++k)
2050 IntSurf_PntOn2S aPntOn2S;
2053 aPntOn2S.SetValue(ux[0], ux[1], ux[2], ux[3]);
2054 aL->Value(aIndx, aPntOn2S);
2056 }//for (j=0; j<1; ++j) {
2057 }//for (i=1; i<=aNbLines; ++i)
2060 //==================================================================================
2061 // function : MakeNewPoint
2063 //==================================================================================
2064 IntSurf_PntOn2S MakeNewPoint(const IntSurf_PntOn2S& replacePnt,
2065 const IntSurf_PntOn2S& oldPnt,
2066 const Standard_Real* Periods)
2068 IntSurf_PntOn2S NewPoint;
2069 NewPoint.SetValue(replacePnt.Value());
2071 Standard_Real OldParams[4], NewParams[4];
2072 oldPnt.Parameters(OldParams[0], OldParams[1], OldParams[2], OldParams[3]);
2073 replacePnt.Parameters(NewParams[0], NewParams[1], NewParams[2], NewParams[3]);
2076 for (i = 0; i < 4; i++)
2077 if (Periods[i] != 0.)
2079 if (Abs(NewParams[i] - OldParams[i]) >= 0.5*Periods[i])
2081 if (NewParams[i] < OldParams[i])
2082 NewParams[i] += Periods[i];
2084 NewParams[i] -= Periods[i];
2088 NewPoint.SetValue(NewParams[0], NewParams[1], NewParams[2], NewParams[3]);
2092 //==================================================================================
2093 // function : Perform
2094 // purpose : base SS Int. function
2095 //==================================================================================
2096 void IntPatch_PrmPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Surf1,
2097 const Handle(Adaptor3d_TopolTool)& D1,
2098 const Handle(Adaptor3d_HSurface)& Surf2,
2099 const Handle(Adaptor3d_TopolTool)& D2,
2100 const Standard_Real TolTangency,
2101 const Standard_Real Epsilon,
2102 const Standard_Real Deflection,
2103 const Standard_Real Increment,
2104 const Standard_Boolean ClearFlag)
2106 Standard_Integer Limit = 2500;
2107 Standard_Integer NbU1 = 10, NbV1 = 10, NbU2 = 10, NbV2 = 10;
2109 D1->SamplePnts(Deflection, NbU1, NbV1);
2110 D2->SamplePnts(Deflection, NbU2, NbV2);
2112 NbU1 = D1->NbSamplesU();
2113 NbV1 = D1->NbSamplesV();
2114 NbU2 = D2->NbSamplesU();
2115 NbV2 = D2->NbSamplesV();
2117 TColStd_Array1OfReal anUpars1(1, NbU1), aVpars1(1, NbV1);
2118 TColStd_Array1OfReal anUpars2(1, NbU2), aVpars2(1, NbV2);
2120 D1->UParameters(anUpars1);
2121 D1->VParameters(aVpars1);
2122 D2->UParameters(anUpars2);
2123 D2->VParameters(aVpars2);
2125 Standard_Real Periods [4];
2126 Periods[0] = (Surf1->IsUPeriodic())? Surf1->UPeriod() : 0.;
2127 Periods[1] = (Surf1->IsVPeriodic())? Surf1->VPeriod() : 0.;
2128 Periods[2] = (Surf2->IsUPeriodic())? Surf2->UPeriod() : 0.;
2129 Periods[3] = (Surf2->IsVPeriodic())? Surf2->VPeriod() : 0.;
2131 //---------------------------------------------
2132 if((NbU1*NbV1<=Limit && NbV2*NbU2<=Limit))
2134 empt = Standard_True;
2140 IntPolyh_Intersection* pInterference = NULL;
2142 if ( D1->IsUniformSampling() || D2->IsUniformSampling() )
2144 pInterference = new IntPolyh_Intersection(Surf1,NbU1,NbV1,Surf2,NbU2,NbV2);
2148 pInterference = new IntPolyh_Intersection(Surf1, anUpars1, aVpars1,
2149 Surf2, anUpars2, aVpars2 );
2152 if ( !pInterference )
2154 done = Standard_False;
2158 IntPolyh_Intersection& Interference = *pInterference;
2160 done = Interference.IsDone();
2165 delete pInterference;
2166 pInterference = NULL;
2172 Standard_Integer nbLigSec = Interference.NbSectionLines();
2173 Standard_Integer nbTanZon = Interference.NbTangentZones();
2174 Standard_Real SeuildPointLigne = 15.0 * Increment * Increment;
2176 Standard_Integer NbLigCalculee = 0, ver;
2177 Standard_Real pu1,pu2,pv1,pv2, incidence, dminiPointLigne;
2178 Standard_Boolean HasStartPoint = Standard_False, RejectLine = Standard_False;
2179 IntSurf_PntOn2S StartPOn2S;
2180 gp_Pnt Point3dDebut,Point3dFin;
2182 TColStd_Array1OfReal StartParams(1,4);
2183 IntWalk_PWalking PW(Surf1,Surf2,TolTangency,Epsilon,Deflection,Increment);
2187 Standard_Integer *TabL = new Standard_Integer [nbLigSec+1];
2188 for(Standard_Integer ls=1; ls<=nbLigSec; ++ls)
2192 //----------------------------------------1.1
2194 Standard_Boolean triok;
2195 Standard_Integer nb_A, nb_B, tyu;
2198 triok=Standard_True;
2199 for(Standard_Integer b = 2; b <= nbLigSec; ++b )
2201 nb_B = Interference.NbPointsInLine(TabL[b]);
2202 nb_A = Interference.NbPointsInLine(TabL[b-1]);
2209 triok=Standard_False;
2213 while(triok==Standard_False);
2216 //----------------------------------------
2217 // 1.2 For the line "ls" get 2D-bounds U,V for surfaces 1,2
2219 for(Standard_Integer ls = 1; ls <= nbLigSec; ++ls)
2221 Standard_Integer nbp = Interference.NbPointsInLine(TabL[ls]);
2227 Standard_Integer *TabPtDep = new Standard_Integer [nbp+1];
2228 for(Standard_Integer ilig = 1; ilig <= nbp; ++ilig )
2233 Standard_Real UminLig1,VminLig1,UmaxLig1,VmaxLig1;
2234 Standard_Real UminLig2,VminLig2,UmaxLig2,VmaxLig2;
2235 Standard_Real _x,_y,_z;
2237 Interference.GetLinePoint(TabL[ls], 1, _x, _y, _z,
2238 UminLig1, VminLig1, UminLig2, VminLig2,
2246 for(Standard_Integer ilig = 2; ilig <= nbp; ilig++ )
2248 Standard_Real U1, U2, V1, V2;
2249 Interference.GetLinePoint(TabL[ls],ilig,_x,_y,_z,U1,V1,U2,V2,incidence);
2251 if(U1>UmaxLig1) UmaxLig1=U1;
2252 if(V1>VmaxLig1) VmaxLig1=V1;
2253 if(U2>UmaxLig2) UmaxLig2=U2;
2254 if(V2>VmaxLig2) VmaxLig2=V2;
2256 if(U1<UminLig1) UminLig1=U1;
2257 if(V1<VminLig1) VminLig1=V1;
2258 if(U2<UminLig2) UminLig2=U2;
2259 if(V2<VminLig2) VminLig2=V2;
2260 }//for( ilig = 2; ilig <= nbp; ilig++ ) {
2262 //----------------------------------------
2264 Standard_Integer nbps2 = (nbp>3)? (nbp/2) : 1;
2265 Standard_Integer NombreDePointsDeDepartDuCheminement = 0;
2266 Standard_Boolean lignetrouvee=Standard_False;
2267 const Standard_Integer NbDePointsDeDepartDuChmLimit = 5;
2271 NombreDePointsDeDepartDuCheminement++;
2272 switch (NombreDePointsDeDepartDuCheminement)
2275 nbps2 = (nbp > 1) ? nbp/2 : 1;
2277 NombreDePointsDeDepartDuCheminement = NbDePointsDeDepartDuChmLimit;
2288 nbps2 = 3 * nbp / 4;
2295 nbps2 = NombreDePointsDeDepartDuCheminement-3;
2296 NombreDePointsDeDepartDuCheminement++;
2300 if(TabPtDep[nbps2] == 0)
2302 Standard_Real U1, U2, V1, V2;
2304 TabPtDep[nbps2] = 1;
2305 Interference.GetLinePoint(TabL[ls],nbps2,_x,_y,_z,U1,V1,U2,V2,incidence);
2307 StartParams(1) = U1;
2308 StartParams(2) = V1;
2309 StartParams(3) = U2;
2310 StartParams(4) = V2;
2312 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
2313 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
2316 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
2317 NbLigCalculee = SLin.Length();
2319 for( l = 1; (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne); l++)
2321 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
2323 if (IsPointOnLine(StartPOn2S, testwline, Deflection))
2325 dminiPointLigne = 0.0;
2329 if(dminiPointLigne > SeuildPointLigne)
2331 PW.Perform(StartParams, UminLig1, VminLig1, UminLig2, VminLig2,
2332 UmaxLig1, VmaxLig1, UmaxLig2, VmaxLig2);
2335 Standard_Boolean bPWIsDone;
2336 Standard_Integer iPWNbPoints, aNbPointsVer;
2337 Standard_Real aD11, aD12, aD21, aD22, aDx;
2339 bPWIsDone=PW.IsDone();
2343 iPWNbPoints=PW.NbPoints();
2345 if( iPWNbPoints > 2 )
2347 //Try to extend the intersection line to boundary, if it is possibly
2348 Standard_Boolean hasBeenAdded = PW.PutToBoundary(Surf1, Surf2);
2350 const Standard_Integer aMinNbPoints = 40;
2351 if(iPWNbPoints < aMinNbPoints)
2354 PW.SeekAdditionalPoints(Surf1, Surf2, aMinNbPoints) || hasBeenAdded;
2355 iPWNbPoints = PW.NbPoints();
2358 RejectLine = Standard_False;
2359 Point3dDebut = PW.Value(1).Value();
2360 Point3dFin = PW.Value(iPWNbPoints).Value();
2361 for( ver = 1; (!RejectLine) && (ver<= NbLigCalculee); ++ver)
2363 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
2365 aNbPointsVer=verwline->NbPnts();
2371 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
2372 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
2374 const gp_Pnt& aP21=verPointDebut.Value();
2375 const gp_Pnt& aP22=verPointFin.Value();
2377 aD11=Point3dDebut.Distance(aP21);
2378 aD12=Point3dDebut.Distance(aP22);
2379 aD21=Point3dFin.Distance(aP21);
2380 aD22=Point3dFin.Distance(aP22);
2382 if((aD11<=TolTangency && aD22<=TolTangency) ||
2383 (aD12<=TolTangency && aD21<=TolTangency))
2385 Standard_Integer m, mx;
2393 const gp_Pnt& aPx=verwline->Point(mx).Value();
2394 for(m=1; m<iPWNbPoints; ++m)
2396 const gp_Pnt& aP1=PW.Value(m).Value();
2397 const gp_Pnt& aP2=PW.Value(m+1).Value();
2398 gp_Vec aVec12(aP1, aP2);
2399 if (aVec12.SquareMagnitude()<1.e-20)
2405 gp_Dir aDir12(aVec12);
2406 gp_Lin aLin12(aP1, aDir12);
2407 aDx=aLin12.Distance(aPx);
2409 //modified by NIZNHY-PKV Tue May 10 11:08:07 2011f
2410 if (aDx<=2.*Epsilon)
2412 //if (aDx<=TolTangency) {
2413 //modified by NIZNHY-PKV Tue May 10 11:08:13 2011t
2415 RejectLine = Standard_True;
2419 }//for(m=1; m<iPWNbPoints; ++m){
2420 }//if((aD11<=TolTangency && aD22<=TolTangency) ||...
2421 }// for( ver = 1 ; (!RejetLigne) && (ver<= NbLigCalculee) ; ver++) {
2426 DublicateOfLinesProcessing(PW, ver, SLin, RejectLine);
2431 IntSurf_TypeTrans trans1,trans2;
2432 Standard_Real locu,locv;
2433 gp_Vec norm1,norm2,d1u,d1v;
2435 Standard_Integer indextg;
2436 gp_Vec tgline(PW.TangentAtLine(indextg));
2437 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
2438 Surf1->D1(locu,locv,ptbid,d1u,d1v);
2439 norm1 = d1u.Crossed(d1v);
2440 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
2441 Surf2->D1(locu,locv,ptbid,d1u,d1v);
2442 norm2 = d1u.Crossed(d1v);
2443 if( tgline.DotCross(norm2,norm1) >= 0. )
2445 trans1 = IntSurf_Out;
2446 trans2 = IntSurf_In;
2450 trans1 = IntSurf_In;
2451 trans2 = IntSurf_Out;
2454 Standard_Real TolTang = TolTangency;
2455 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
2456 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang,hasBeenAdded);
2457 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang,hasBeenAdded);
2459 if(wline->NbVertex() == 0)
2462 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
2463 POn2S.Parameters(pu1,pv1,pu2,pv2);
2464 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
2465 vtx.SetParameters(pu1,pv1,pu2,pv2);
2466 vtx.SetParameter(1);
2467 wline->AddVertex(vtx);
2469 POn2S = PW.Line()->Value(wline->NbPnts());
2470 POn2S.Parameters(pu1,pv1,pu2,pv2);
2471 vtx.SetValue(Point3dFin,TolTang,Standard_False);
2472 vtx.SetParameters(pu1,pv1,pu2,pv2);
2473 vtx.SetParameter(wline->NbPnts());
2474 wline->AddVertex(vtx);
2477 lignetrouvee = Standard_True;
2479 SeveralWlinesProcessing(Surf1, Surf2, SLin, Periods, trans1, trans2,
2480 TolTang, Max(PW.MaxStep(0), PW.MaxStep(1)),
2481 Max(PW.MaxStep(2), PW.MaxStep(3)), wline);
2483 AddWLine(SLin, wline, Deflection);
2484 empt = Standard_False;
2488 }// dminiPointLigne > SeuildPointLigne
2490 }// if TabPtDep[nbps2] == 0
2491 } while(nbp>5 && !( (NombreDePointsDeDepartDuCheminement >= NbDePointsDeDepartDuChmLimit && lignetrouvee) ||
2492 (NombreDePointsDeDepartDuCheminement-3 >= nbp && (!lignetrouvee))));
2498 }// if nbLigSec >= 1
2500 AdjustOnPeriodic(Surf1, Surf2, SLin);
2503 //--------------------------------------------------------------------
2504 //-- Calcul des parametres approches a partir des Zones De Tangence --
2505 //--------------------------------------------------------------------
2506 Standard_Real UminLig1,VminLig1,UmaxLig1,VmaxLig1;
2507 Standard_Real UminLig2,VminLig2,UmaxLig2,VmaxLig2;
2509 UminLig1=VminLig1=UminLig2=VminLig2=RealLast();
2510 UmaxLig1=VmaxLig1=UmaxLig2=VmaxLig2=-UminLig1;
2512 // NbPointsInTangentZone always == 1 (eap)
2515 for( z=1; z <= nbTanZon; z++)
2517 //Standard_Integer NbPointsInTangentZone=Interference.NbPointsInTangentZone(z);
2518 //for(Standard_Integer pz=1; pz<=NbPointsInTangentZone; pz++) {
2519 Standard_Integer pz=1;
2520 Standard_Real _x,_y,_z;
2521 Standard_Real U1, U2, V1, V2;
2522 Interference.GetTangentZonePoint(z,pz,_x,_y,_z,U1,V1,U2,V2);
2524 if(U1>UmaxLig1) UmaxLig1=U1;
2525 if(V1>VmaxLig1) VmaxLig1=V1;
2526 if(U2>UmaxLig2) UmaxLig2=U2;
2527 if(V2>VmaxLig2) VmaxLig2=V2;
2529 if(U1<UminLig1) UminLig1=U1;
2530 if(V1<VminLig1) VminLig1=V1;
2531 if(U2<UminLig2) UminLig2=U2;
2532 if(V2<VminLig2) VminLig2=V2;
2536 for(z=1; z <= nbTanZon; z++)
2538 //Standard_Integer NbPointsInTangentZone=Interference.NbPointsInTangentZone(z);
2539 //for(Standard_Integer pz=1; pz<=NbPointsInTangentZone; pz++) {
2540 Standard_Integer pz=1;
2541 Standard_Real _x,_y,_z;
2542 Standard_Real U1, U2, V1, V2;
2543 Interference.GetTangentZonePoint(z,pz,_x,_y,_z,U1,V1,U2,V2);
2545 StartParams(1) = U1;
2546 StartParams(2) = V1;
2547 StartParams(3) = U2;
2548 StartParams(4) = V2;
2550 //-----------------------------------------------------------------------
2551 //-- Calcul du premier point de cheminement a partir du point approche --
2552 //-----------------------------------------------------------------------
2553 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
2556 //-------------------------------------------------
2557 //-- Un point a ete trouve --
2558 //-- On verifie qu il n appartient pas --
2559 //-- a une ligne de cheminement deja calculee. --
2560 //-------------------------------------------------
2561 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
2563 NbLigCalculee = SLin.Length();
2564 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
2566 for(Standard_Integer l=1;
2567 (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne);
2570 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
2572 if (IsPointOnLine(StartPOn2S, testwline, Deflection))
2574 dminiPointLigne = 0.0;
2578 //-- Fin d exploration des lignes
2579 if(dminiPointLigne > SeuildPointLigne)
2581 //---------------------------------------------------
2582 //-- Le point de depart du nouveau cheminement --
2583 //-- n est present dans aucune ligne deja calculee.--
2584 //---------------------------------------------------
2585 PW.Perform(StartParams,UminLig1,VminLig1,UminLig2,VminLig2,
2586 UmaxLig1,VmaxLig1,UmaxLig2,VmaxLig2);
2592 const Standard_Integer aMinNbPoints = 40;
2593 if(PW.NbPoints() < aMinNbPoints)
2595 PW.SeekAdditionalPoints(Surf1, Surf2, aMinNbPoints);
2598 //-----------------------------------------------
2599 //-- Verification a posteriori :
2600 //-- On teste si le point de depart et de fin de
2601 //-- la ligne de cheminement est present dans une
2603 //-----------------------------------------------
2604 RejectLine = Standard_False;
2605 Point3dDebut = PW.Value(1).Value();
2606 const IntSurf_PntOn2S& PointFin = PW.Value(PW.NbPoints());
2607 Point3dFin = PointFin.Value();
2609 for(ver=1 ; (!RejectLine) && (ver<= NbLigCalculee) ; ver++)
2611 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
2612 //-- Handle(IntPatch_WLine) verwline=Handle(IntPatch_WLine)::DownCast(SLin.Value(ver));
2614 // Check end point if it is on existing line.
2615 // Start point is checked before.
2616 if (IsPointOnLine(PointFin, verwline, Deflection))
2618 RejectLine = Standard_True;
2622 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
2623 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
2624 if(Point3dDebut.Distance(verPointDebut.Value()) < TolTangency)
2626 RejectLine = Standard_True;
2630 if(Point3dFin.Distance(verPointFin.Value()) < TolTangency)
2632 RejectLine = Standard_True;
2639 IntSurf_TypeTrans trans1,trans2;
2640 Standard_Real locu,locv;
2641 gp_Vec norm1,norm2,d1u,d1v;
2643 Standard_Integer indextg;
2644 gp_Vec tgline(PW.TangentAtLine(indextg));
2645 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
2646 Surf1->D1(locu,locv,ptbid,d1u,d1v);
2647 norm1 = d1u.Crossed(d1v);
2648 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
2649 Surf2->D1(locu,locv,ptbid,d1u,d1v);
2650 norm2 = d1u.Crossed(d1v);
2651 if (tgline.DotCross(norm2,norm1)>0.)
2653 trans1 = IntSurf_Out;
2654 trans2 = IntSurf_In;
2658 trans1 = IntSurf_In;
2659 trans2 = IntSurf_Out;
2662 Standard_Real TolTang = TolTangency;
2663 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
2664 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang);
2665 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang);
2668 if(wline->NbVertex() == 0)
2671 IntSurf_PntOn2S POn2S = PW.Line()->Value(1);
2672 POn2S.Parameters(pu1,pv1,pu2,pv2);
2673 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
2674 vtx.SetParameters(pu1,pv1,pu2,pv2);
2675 vtx.SetParameter(1);
2676 wline->AddVertex(vtx);
2678 POn2S = PW.Line()->Value(wline->NbPnts());
2679 POn2S.Parameters(pu1,pv1,pu2,pv2);
2680 vtx.SetValue(Point3dFin,TolTang,Standard_False);
2681 vtx.SetParameters(pu1,pv1,pu2,pv2);
2682 vtx.SetParameter(wline->NbPnts());
2683 wline->AddVertex(vtx);
2687 AddWLine(SLin, wline, Deflection);
2688 empt = Standard_False;
2692 //-- cout<<" ----- REJET DE LIGNE (POINT DE DEPART) ----- "<<endl;
2694 //------------------------------------------------------------
2696 } //-- le cheminement a reussi (done a True)
2697 } //-- le point approche ne renvoie pas sur une ligne existante
2698 } //-- Si HasStartPoint
2699 //} //-- Boucle Sur les Points de la Tangent Zone
2700 } //-- Boucle sur Les Tangent Zones
2702 if ( pInterference )
2704 delete pInterference;
2705 pInterference = NULL;
2709 }// if((NbU1*NbV1<=Limit && NbV2*NbU2<=Limit)) {
2711 Handle(IntSurf_LineOn2S) LOn2S = new IntSurf_LineOn2S();
2712 PointDepart( LOn2S, Surf1, NbU1, NbV1, Surf2, NbU2, NbV2 );
2713 empt = Standard_True;
2714 done = Standard_True;
2716 Standard_Integer NbLigCalculee = 0;
2717 Standard_Real U1,U2,V1,V2;
2718 Standard_Real pu1,pu2,pv1,pv2;
2720 TColStd_Array1OfReal StartParams(1,4);
2721 Standard_Integer MaxOscill = NbU1;
2722 if(MaxOscill < NbU2) MaxOscill=NbU2;
2723 if(MaxOscill < NbV1) MaxOscill=NbV1;
2724 if(MaxOscill < NbV2) MaxOscill=NbV2;
2726 Standard_Real nIncrement=Increment;
2728 //nIncrement/=0.5*MaxOscill;
2730 IntWalk_PWalking PW(Surf1,Surf2,TolTangency,Epsilon,Deflection,nIncrement);
2731 Standard_Real SeuildPointLigne = 15.0 * Increment * Increment; //-- 10 est insuffisant
2732 Standard_Real dminiPointLigne;
2733 Standard_Boolean HasStartPoint,RejetLigne;
2734 IntSurf_PntOn2S StartPOn2S;
2735 Standard_Integer ver;
2736 gp_Pnt Point3dDebut,Point3dFin;
2738 //------------------------------------------------------------
2739 //-- Calcul des parametres approches a partir des Zones De Tangence --
2740 //--------------------------------------------------------------------
2741 Standard_Integer nbTanZon = LOn2S->NbPoints();
2742 for(Standard_Integer z=1; z <= nbTanZon; z++) {
2743 const IntSurf_PntOn2S& POn2S = LOn2S->Value(z);
2744 POn2S.Parameters(U1,V1,U2,V2);
2745 StartParams(1) = U1;
2746 StartParams(2) = V1;
2747 StartParams(3) = U2;
2748 StartParams(4) = V2;
2750 //-----------------------------------------------------------------------
2751 //-- Calcul du premier point de cheminement a partir du point approche --
2752 //-----------------------------------------------------------------------
2753 HasStartPoint = PW.PerformFirstPoint(StartParams,StartPOn2S);
2756 //-------------------------------------------------
2757 //-- Un point a ete trouve --
2758 //-- On verifie qu il n appartient pas --
2759 //-- a une ligne de cheminement deja calculee. --
2760 //-------------------------------------------------
2761 StartPOn2S.Parameters(pu1,pv1,pu2,pv2);
2763 NbLigCalculee = SLin.Length();
2764 dminiPointLigne = SeuildPointLigne + SeuildPointLigne;
2766 for(Standard_Integer l=1;
2767 (l <= NbLigCalculee) && (dminiPointLigne >= SeuildPointLigne);
2770 const Handle(IntPatch_WLine)& testwline = *((Handle(IntPatch_WLine)*)&SLin.Value(l));
2772 if (IsPointOnLine(StartPOn2S, testwline, Deflection))
2774 dminiPointLigne = 0.0;
2778 //-- Fin d exploration des lignes
2779 if(dminiPointLigne > SeuildPointLigne)
2781 //---------------------------------------------------
2782 //-- Le point de depart du nouveau cheminement --
2783 //-- n est present dans aucune ligne deja calculee.--
2784 //---------------------------------------------------
2785 PW.Perform(StartParams);
2790 //-----------------------------------------------
2791 //-- Verification a posteriori :
2792 //-- On teste si le point de depart et de fin de
2793 //-- la ligne de cheminement est present dans une
2795 //-----------------------------------------------
2796 RejetLigne = Standard_False;
2797 Point3dDebut = PW.Value(1).Value();
2798 const IntSurf_PntOn2S& PointFin = PW.Value(PW.NbPoints());
2799 Point3dFin = PointFin.Value();
2801 for(ver=1 ; ver<= NbLigCalculee ; ver++)
2803 const Handle(IntPatch_WLine)& verwline = *((Handle(IntPatch_WLine)*)&SLin.Value(ver));
2804 //-- Handle(IntPatch_WLine) verwline=Handle(IntPatch_WLine)::DownCast(SLin.Value(ver));
2806 // Check end point if it is on existing line.
2807 // Start point is checked before.
2808 if (IsPointOnLine(PointFin, verwline, Deflection))
2810 RejetLigne = Standard_True;
2814 const IntSurf_PntOn2S& verPointDebut = verwline->Point(1);
2815 const IntSurf_PntOn2S& verPointFin = verwline->Point(verwline->NbPnts());
2816 if( (Point3dDebut.Distance(verPointDebut.Value()) < TolTangency) ||
2817 (Point3dFin.Distance(verPointFin.Value()) < TolTangency))
2819 RejetLigne = Standard_True;
2826 DublicateOfLinesProcessing(PW, ver, SLin, RejetLigne);
2831 IntSurf_TypeTrans trans1,trans2;
2832 Standard_Real locu,locv;
2833 gp_Vec norm1,norm2,d1u,d1v;
2835 Standard_Integer indextg;
2836 gp_Vec tgline(PW.TangentAtLine(indextg));
2837 PW.Line()->Value(indextg).ParametersOnS1(locu,locv);
2838 Surf1->D1(locu,locv,ptbid,d1u,d1v);
2839 norm1 = d1u.Crossed(d1v);
2840 PW.Line()->Value(indextg).ParametersOnS2(locu,locv);
2841 Surf2->D1(locu,locv,ptbid,d1u,d1v);
2842 norm2 = d1u.Crossed(d1v);
2843 if (tgline.DotCross(norm2,norm1)>0.)
2845 trans1 = IntSurf_Out;
2846 trans2 = IntSurf_In;
2849 trans1 = IntSurf_In;
2850 trans2 = IntSurf_Out;
2853 Standard_Real TolTang = TolTangency;
2854 Handle(IntPatch_WLine) wline = new IntPatch_WLine(PW.Line(),Standard_False,trans1,trans2);
2855 IntPatch_RstInt::PutVertexOnLine(wline,Surf1,D1,Surf2,Standard_True,TolTang);
2856 IntPatch_RstInt::PutVertexOnLine(wline,Surf2,D2,Surf1,Standard_False,TolTang);
2859 if(wline->NbVertex() == 0)
2862 const IntSurf_PntOn2S& POn2Sf = PW.Line()->Value(1);
2863 POn2Sf.Parameters(pu1,pv1,pu2,pv2);
2864 vtx.SetValue(Point3dDebut,TolTang,Standard_False);
2865 vtx.SetParameters(pu1,pv1,pu2,pv2);
2866 vtx.SetParameter(1);
2867 wline->AddVertex(vtx);
2869 const IntSurf_PntOn2S& POn2Sl = PW.Line()->Value(wline->NbPnts());
2870 POn2Sl.Parameters(pu1,pv1,pu2,pv2);
2871 vtx.SetValue(Point3dFin,TolTang,Standard_False);
2872 vtx.SetParameters(pu1,pv1,pu2,pv2);
2873 vtx.SetParameter(wline->NbPnts());
2874 wline->AddVertex(vtx);
2878 AddWLine(SLin, wline, Deflection);
2879 empt = Standard_False;
2883 //-- cout<<" ----- REJET DE LIGNE (POINT DE DEPART) ----- "<<endl;
2885 //------------------------------------------------------------
2887 } //-- le cheminement a reussi (done a True)
2888 } //-- le point approche ne renvoie pas sur une ligne existante
2889 } //-- Si HasStartPoint
2890 } //-- Boucle sur Les Tangent Zones
2892 //modified by NIZNHY-PKV Wed May 25 09:39:07 2011f
2893 //=======================================================================
2894 //class : IntPatch_InfoPD
2896 //=======================================================================
2897 class IntPatch_InfoPD {
2899 //----------------------------------------C-tor
2900 IntPatch_InfoPD(const Standard_Integer aNBI) {
2901 Standard_Integer aNBI2, i, j;
2905 myP1DS2=new char[aNBI2];
2906 myP2DS1=new char[aNBI2];
2907 myIP1=new Standard_Integer[aNBI2];
2908 myIP2=new Standard_Integer[aNBI2];
2909 myP1=new gp_Pnt[aNBI2];
2910 myP2=new gp_Pnt[aNBI2];
2912 for (i=0; i<myNBI; ++i) {
2913 for (j=0; j<myNBI; ++j) {
2918 xP1(i, j).SetCoord(0., 0., 0.);
2919 xP2(i, j).SetCoord(0., 0., 0.);
2923 //---------------------------------------- D-tor
2924 ~IntPatch_InfoPD() {
2925 delete [] (char*) myP1DS2;
2926 delete [] (char*) myP2DS1;
2927 delete [] (Standard_Integer*) myIP1;
2928 delete [] (Standard_Integer*) myIP2;
2929 delete [] (gp_Pnt*)myP1;
2930 delete [] (gp_Pnt*)myP2;
2932 //---------------------------------------- Index
2933 Standard_Integer Index(const Standard_Integer i,
2934 const Standard_Integer j) const {
2937 //---------------------------------------- NBI
2938 Standard_Integer NBI() const {
2941 //----------------------------------------xP1DS2
2942 char& xP1DS2(const Standard_Integer i,
2943 const Standard_Integer j) {
2944 return myP1DS2[Index(i,j)];
2946 //----------------------------------------xP2DS1
2947 char& xP2DS1(const Standard_Integer i,
2948 const Standard_Integer j) {
2949 return myP2DS1[Index(i,j)];
2951 //----------------------------------------xIP1
2952 Standard_Integer& xIP1(const Standard_Integer i,
2953 const Standard_Integer j) {
2954 return myIP1[Index(i,j)];
2956 //----------------------------------------xIP2
2957 Standard_Integer& xIP2(const Standard_Integer i,
2958 const Standard_Integer j) {
2959 return myIP2[Index(i,j)];
2961 //----------------------------------------xP1
2962 gp_Pnt& xP1(const Standard_Integer i,
2963 const Standard_Integer j) {
2964 return myP1[Index(i,j)];
2966 //----------------------------------------xP1
2967 gp_Pnt& xP2(const Standard_Integer i,
2968 const Standard_Integer j) {
2969 return myP2[Index(i,j)];
2974 IntPatch_InfoPD (const IntPatch_InfoPD&);
2975 IntPatch_InfoPD& operator=(const IntPatch_InfoPD&);
2979 Standard_Integer myNBI;
2982 Standard_Integer *myIP1;
2983 Standard_Integer *myIP2;
2987 //modified by NIZNHY-PKV Tue May 24 11:38:55 2011t
2988 //==================================================================================
2989 // function : PointDepart
2991 //==================================================================================
2992 void IntPatch_PrmPrmIntersection::PointDepart(Handle(IntSurf_LineOn2S)& LineOn2S,
2993 const Handle(Adaptor3d_HSurface)& S1,
2994 const Standard_Integer SU_1,
2995 const Standard_Integer SV_1,
2996 const Handle(Adaptor3d_HSurface)& S2,
2997 const Standard_Integer SU_2,
2998 const Standard_Integer SV_2) const
3000 Standard_Integer i, j, xNBI;
3001 //modified by NIZNHY-PKV Tue May 24 11:37:38 2011f
3003 IntPatch_InfoPD aIPD(xNBI);
3004 //modified by NIZNHY-PKV Wed May 25 06:47:12 2011t
3005 Standard_Integer iC15, SU1, SV1, SU2, SV2;
3006 Standard_Real U0, U1, V0, V1, U, V;
3007 Standard_Real resu0,resv0;
3008 Standard_Real du1,du2,dv1,dv2, dmaxOn1, dmaxOn2;
3009 Standard_Real x0,y0,z0, x1,y1,z1,d;
3031 U0 = S1->FirstUParameter();
3032 U1 = S1->LastUParameter();
3033 V0 = S1->FirstVParameter();
3034 V1 = S1->LastVParameter();
3042 du1 = (U1-U0)/(SU1-1);
3043 dv1 = (V1-V0)/(SV1-1);
3044 for(U=U0,i=0; i<SU1; i++,U+=du1) {
3045 for(V=V0,j=0; j<SV1; V+=dv1,j++) {
3046 aIPD.xP1(i, j)= S1->Value(U,V);
3047 Box1.Add(aIPD.xP1(i, j));
3049 aIPD.xP1(i, j) .Coord(x0,y0,z0);
3050 aIPD.xP1(i-1, j-1).Coord(x1,y1,z1);
3052 d=Abs(x1-x0)+Abs(y1-y0)+Abs(z1-z0);
3059 Box1.Enlarge(1.e-8);
3061 U0 = S2->FirstUParameter();
3062 U1 = S2->LastUParameter();
3063 V0 = S2->FirstVParameter();
3064 V1 = S2->LastVParameter();
3066 du2 = (U1-U0)/(SU2-1);
3067 dv2 = (V1-V0)/(SV2-1);
3068 for(U=U0,i=0; i<SU2; i++,U+=du2) {
3069 for(V=V0,j=0; j<SV2; V+=dv2,j++) {
3070 aIPD.xP2(i, j) = S2->Value(U,V);
3071 Box2.Add(aIPD.xP2(i, j));
3073 aIPD.xP2(i, j) .Coord(x0,y0,z0);
3074 aIPD.xP2(i-1, j-1).Coord(x1,y1,z1);
3075 d = Abs(x1-x0)+Abs(y1-y0)+Abs(z1-z0);
3082 Box2.Enlarge(1.e-8);
3085 if(Box1.IsOut(Box2)) {
3090 Standard_Integer aNbPG;
3091 Standard_Real x10,y10,z10,x11,y11,z11;
3092 Standard_Real x20,y20,z20,x21,y21,z21;
3093 Standard_Real dx, dy, dz, dmax;
3094 Standard_Real dx2, dy2, dz2;
3096 Box1.Get(x10,y10,z10,x11,y11,z11);
3097 Box2.Get(x20,y20,z20,x21,y21,z21);
3099 x0 = (x10>x20)? x10 : x20;
3100 y0 = (y10>y20)? y10 : y20;
3101 z0 = (z10>z20)? z10 : z20;
3103 x1 = (x11<x21)? x11 : x21;
3104 y1 = (y11<y21)? y11 : y21;
3105 z1 = (z11<z21)? z11 : z21;
3107 if(dmaxOn2 > dmaxOn1) {
3119 x10-=dmaxOn1; y10-=dmaxOn1; z10-=dmaxOn1;
3120 x11+=dmaxOn1; y11+=dmaxOn1; z11+=dmaxOn1;
3122 x20-=dmaxOn1; y20-=dmaxOn1; z20-=dmaxOn1;
3123 x21+=dmaxOn1; y21+=dmaxOn1; z21+=dmaxOn1;
3125 aNbPG=NbPointsGrille();
3152 IntPatch_PrmPrmIntersection_T3Bits M1(_BASE);
3153 IntPatch_PrmPrmIntersection_T3Bits M2(_BASE);
3155 for(i=0;i<SU1;i++) {
3156 for(j=0;j<SV1;j++) {
3158 const gp_Pnt& P=aIPD.xP1(i, j);
3159 aIPD.xP1DS2(i, j) = (char)CodeReject(x20,y20,z20,x21,y21,z21,P.X(),P.Y(),P.Z());
3160 int ix = (int)((P.X()-x0 + dx2 )/dx);
3161 if(DansGrille(ix)) {
3162 int iy = (int)((P.Y()-y0 + dy2)/dy);
3163 if(DansGrille(iy)) {
3164 int iz = (int)((P.Z()-z0 + dz2)/dz);
3165 if(DansGrille(iz)) {
3166 aIPD.xIP1(i, j) = GrilleInteger(ix,iy,iz);
3172 //-- cout<<" Grille du 1 fini "<<endl;
3173 for(i=0;i<SU2;i++) {
3174 for(j=0;j<SV2;j++) {
3176 const gp_Pnt& P=aIPD.xP2(i, j);
3177 aIPD.xP2DS1(i, j) = (char)CodeReject(x10,y10,z10,x11,y11,z11,P.X(),P.Y(),P.Z());
3178 int ix = (int)((P.X()-x0 + dx2)/dx);
3179 if(DansGrille(ix)) {
3180 int iy = (int)((P.Y()-y0 + dy2)/dy);
3181 if(DansGrille(iy)) {
3182 int iz = (int)((P.Z()-z0 + dz2)/dz);
3183 if(DansGrille(iz)) {
3184 aIPD.xIP2(i, j) = GrilleInteger(ix,iy,iz);
3191 for(i=0;i<SU1-1;i+=1) {
3192 for(j=0;j<SV1-1;j+=1) {
3193 if(!((aIPD.xP1DS2(i, j) & aIPD.xP1DS2(i+1, j)) ||
3194 (aIPD.xP1DS2(i, j) & aIPD.xP1DS2(i+1, j+1)))){
3195 Remplit(aIPD.xIP1(i, j),
3197 aIPD.xIP1(i+1, j+1),
3200 if(!((aIPD.xP1DS2(i, j) & aIPD.xP1DS2(i, j+1)) ||
3201 (aIPD.xP1DS2(i, j) & aIPD.xP1DS2(i+1, j+1)))) {
3202 Remplit(aIPD.xIP1(i, j),
3204 aIPD.xIP1(i+1, j+1),
3210 for(i=0;i<SU2-1;i+=1) {
3211 for(j=0;j<SV2-1;j+=1) {
3212 if(!((aIPD.xP2DS1(i, j) & aIPD.xP2DS1(i+1, j)) ||
3213 (aIPD.xP2DS1(i, j) & aIPD.xP2DS1(i+1, j+1)))){
3214 Remplit(aIPD.xIP2(i, j),
3216 aIPD.xIP2(i+1, j+1),
3219 if(!((aIPD.xP2DS1(i, j) & aIPD.xP2DS1(i, j+1)) ||
3220 (aIPD.xP2DS1(i, j) & aIPD.xP2DS1(i+1, j+1)))){
3221 Remplit(aIPD.xIP2(i, j),
3223 aIPD.xIP2(i+1, j+1),
3233 long unsigned Compt=0;
3235 int indicepointtraite = 0;
3236 Standard_Integer k,nu,nv;
3239 indicepointtraite--;
3240 ok = M1.And(M2,newind);
3242 IntegerGrille(newind,i,j,k);
3245 if( DansGrille(i-1) && DansGrille(j-1) && DansGrille(k-1)
3246 && DansGrille(i+1) && DansGrille(j+1) && DansGrille(k+1)) {
3248 for(si=-1; si<= 1 && nb<LIM; si++) {
3249 for(sj=-1; sj<= 1 && nb<LIM; sj++) {
3250 for(sk=-1; sk<= 1 && nb<LIM; sk++) {
3251 long unsigned lu=GrilleInteger(i+si,j+sj,k+sk);
3252 if(M1.Val(lu) && M2.Val(lu)) {
3259 for(si=-1; si<= 1; si++) {
3260 for(sj=-1; sj<= 1; sj++) {
3261 for(sk=-1; sk<= 1; sk++) {
3262 if(si || sj || sk) {
3263 long unsigned lu=GrilleInteger(i+si,j+sj,k+sk);
3272 gp_Pnt P(dx*i + x0, dy*j + y0, dz*k+z0);
3274 Standard_Integer nu1=-1,nu2=-1;
3275 Standard_Integer nv1=0, nv2=0;
3277 for(nu=0;nu1<0 && nu<SU1;nu++) {
3278 for(nv=0;nu1<0 && nv<SV1;nv++) {
3279 if( aIPD.xIP1(nu, nv) ==(Standard_Integer) newind ) {
3281 aIPD.xIP1(nu, nv)=indicepointtraite;
3288 for(nu=0;nu2<0 && nu<SU2;nu++) {
3289 for(nv=0;nu2<0 && nv<SV2;nv++) {
3290 if( aIPD.xIP2(nu, nv)==(Standard_Integer) newind ) {
3292 aIPD.xIP2(nu, nv)=indicepointtraite;
3298 if(nu1>=0 && nu2>=0) {
3299 IntSurf_PntOn2S POn2S;
3301 S1->FirstUParameter()+nu1*du1,
3302 S1->FirstVParameter()+nv1*dv1,
3303 S2->FirstUParameter()+nu2*du2,
3304 S2->FirstVParameter()+nv2*dv2);
3305 LineOn2S->Add(POn2S);
3309 //-- aucun point du triangle n a ete trouve assez proche
3310 //-- on recherche les 3 points les plus proches de P
3311 //-- dans chacun des tableaux
3312 Standard_Real Dist3[3],u3[3] = { 0.0, 0.0, 0.0 },v3[3] = { 0.0, 0.0, 0.0 };
3313 Dist3[0]=Dist3[1]=Dist3[2]=RealLast();
3314 for(U=resu0,i=0; i<SU1; i++,U+=du1) {
3315 for(V=resv0,j=0; j<SV1; V+=dv1,j++) {
3316 //-- On place les 3 meilleures valeurs dans Dist1,Dist2,Dist3
3317 Standard_Real t = aIPD.xP1(i, j).SquareDistance(P);
3318 //-- On remplace la plus grande valeur ds Dist[.] par la val courante
3319 if(Dist3[0]<Dist3[1]) {
3321 z=Dist3[0]; Dist3[0]=Dist3[1]; Dist3[1]=z;
3322 z=u3[0]; u3[0]=u3[1]; u3[1]=z;
3323 z=v3[0]; v3[0]=v3[1]; v3[1]=z;
3325 if(Dist3[1]<Dist3[2]) {
3327 z=Dist3[1]; Dist3[1]=Dist3[2]; Dist3[2]=z;
3328 z=u3[1]; u3[1]=u3[2]; u3[2]=z;
3329 z=v3[1]; v3[1]=v3[2]; v3[2]=z;
3331 if(Dist3[0]<Dist3[1]) {
3333 z=Dist3[0]; Dist3[0]=Dist3[1]; Dist3[1]=z;
3334 z=u3[0]; u3[0]=u3[1]; u3[1]=z;
3335 z=v3[0]; v3[0]=v3[1]; v3[1]=z;
3337 //-- la plus grande valeur est dans Dist3[0]
3339 Dist3[0]=t; u3[0]=U; v3[0]=V;
3344 Standard_Real U1_3 = (u3[0]+u3[1]+u3[2])/3.0;
3345 Standard_Real V1_3 = (v3[0]+v3[1]+v3[2])/3.0;
3347 Dist3[0]=Dist3[1]=Dist3[2]=RealLast();
3348 for(U=U0,i=0; i<SU2; i++,U+=du2) {
3349 for(V=V0,j=0; j<SV2; V+=dv2,j++) {
3350 //-- On place les 3 meilleures valeurs dans Dist1,Dist2,Dist3
3351 Standard_Real t = aIPD.xP2(i, j).SquareDistance(P);
3352 //-- On remplace la plus grande valeur ds Dist3[.] par la val courante
3353 if(Dist3[0]<Dist3[1]) {
3355 z=Dist3[0]; Dist3[0]=Dist3[1]; Dist3[1]=z;
3356 z=u3[0]; u3[0]=u3[1]; u3[1]=z;
3357 z=v3[0]; v3[0]=v3[1]; v3[1]=z;
3359 if(Dist3[1]<Dist3[2]) {
3361 z=Dist3[1]; Dist3[1]=Dist3[2]; Dist3[2]=z;
3362 z=u3[1]; u3[1]=u3[2]; u3[2]=z;
3363 z=v3[1]; v3[1]=v3[2]; v3[2]=z;
3365 if(Dist3[0]<Dist3[1]) {
3367 z=Dist3[0]; Dist3[0]=Dist3[1]; Dist3[1]=z;
3368 z=u3[0]; u3[0]=u3[1]; u3[1]=z;
3369 z=v3[0]; v3[0]=v3[1]; v3[1]=z;
3371 //-- la plus grande valeur est dans Dist3[0]
3373 Dist3[0]=t; u3[0]=U; v3[0]=V;
3378 Standard_Real U2_3 = (u3[0]+u3[1]+u3[2])/3.0;
3379 Standard_Real V2_3 = (v3[0]+v3[1]+v3[2])/3.0;
3381 IntSurf_PntOn2S POn2S;
3382 POn2S.SetValue(P,U1_3,V1_3,U2_3,V2_3);
3383 LineOn2S->Add(POn2S);
3391 //==================================================================================
3392 // function : IsPointOnLine
3394 //==================================================================================
3396 Standard_Boolean IsPointOnLine(const IntSurf_PntOn2S &thePOn2S,
3397 const Handle(IntPatch_WLine) &theWLine,
3398 const Standard_Real Deflection)
3400 Standard_Boolean isOnLine = Standard_False;
3401 Standard_Real Deflection2 = Deflection*Deflection;
3402 Standard_Real pu1, pu2, pv1, pv2;
3404 thePOn2S.Parameters(pu1, pv1, pu2, pv2);
3406 if ((theWLine->IsOutSurf1Box(gp_Pnt2d(pu1, pv1)) == Standard_False) &&
3407 (theWLine->IsOutSurf2Box(gp_Pnt2d(pu2, pv2)) == Standard_False) &&
3408 (theWLine->IsOutBox(thePOn2S.Value()) == Standard_False)) {
3409 const Standard_Integer NbPntOn2SOnLine = theWLine->NbPnts();
3410 Standard_Integer ll;
3412 for (ll=1; ll < NbPntOn2SOnLine && !isOnLine; ll++) {
3413 const gp_Pnt &Pa = theWLine->Point(ll).Value();
3414 const gp_Pnt &Pb = theWLine->Point(ll+1).Value();
3415 const gp_Pnt &PStart = thePOn2S.Value();
3416 const gp_Vec AM(Pa, PStart);
3417 const gp_Vec MB(PStart,Pb);
3418 const Standard_Real AMMB = AM.Dot(MB);
3421 gp_Dir ABN(Pb.X() - Pa.X(), Pb.Y() - Pa.Y(), Pb.Z() - Pa.Z());
3422 Standard_Real lan = ABN.X()*AM.X() + ABN.Y()*AM.Y() + ABN.Z()*AM.Z();
3423 gp_Vec AH(lan*ABN.X(), lan*ABN.Y(), lan*ABN.Z());
3424 gp_Vec HM(AM.X() - AH.X(), AM.Y() - AH.Y(), AM.Z() - AH.Z());
3425 Standard_Real d = 0.0;
3427 if(HM.X() < Deflection) {
3430 if(HM.Y() < Deflection) {
3433 if(HM.Z() < Deflection) {
3445 if(d < Deflection2) {
3446 isOnLine = Standard_True;
3449 Standard_Real dab = Pa.SquareDistance(Pb);
3450 Standard_Real dap = Pa.SquareDistance(PStart);
3453 isOnLine = Standard_True;
3455 Standard_Real dbp = Pb.SquareDistance(PStart);
3458 isOnLine = Standard_True;
3468 //==================================================================================
3469 // function : AddWLine
3471 //==================================================================================
3473 void AddWLine(IntPatch_SequenceOfLine &theLines,
3474 const Handle(IntPatch_WLine) &theWLine,
3475 const Standard_Real Deflection)
3477 Standard_Integer i = 1;
3478 Standard_Integer aNbLines = theLines.Length();
3479 Standard_Boolean isToRemove;
3481 // Check each line of theLines if it is on theWLine.
3482 while (i <= aNbLines) {
3483 Handle(IntPatch_WLine) aWLine =
3484 Handle(IntPatch_WLine)::DownCast(theLines.Value(i));
3486 isToRemove = Standard_False;
3488 if (aWLine.IsNull() == Standard_False) {
3489 // Check the middle point.
3490 Standard_Integer aMidIndex = (aWLine->NbPnts() + 1)/2;
3492 if (aMidIndex > 0) {
3493 const IntSurf_PntOn2S &aPnt = aWLine->Point(aMidIndex);
3495 if (IsPointOnLine(aPnt, theWLine, Deflection)) {
3496 // Middle point is on theWLine. Check vertices.
3497 isToRemove = Standard_True;
3500 const Standard_Integer aNbVtx = aWLine->NbVertex();
3502 for (j = 1; j <= aNbVtx; j++) {
3503 const IntPatch_Point &aPoint = aWLine->Vertex(j);
3505 if (!IsPointOnLine(aPoint.PntOn2S(), theWLine, Deflection)) {
3506 isToRemove = Standard_False;
3522 // Add theWLine to the sequence of lines.
3523 theLines.Append(theWLine);