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0026930: ShapeConstruct_ProjectCurveOnSurface returns a B-Spline instead of line...
[occt.git] / src / ShapeConstruct / ShapeConstruct_ProjectCurveOnSurface.cxx
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973c2be1 1// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 2//
973c2be1 3// This file is part of Open CASCADE Technology software library.
b311480e 4//
d5f74e42 5// This library is free software; you can redistribute it and/or modify it under
6// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 7// by the Free Software Foundation, with special exception defined in the file
8// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
9// distribution for complete text of the license and disclaimer of any warranty.
b311480e 10//
973c2be1 11// Alternatively, this file may be used under the terms of Open CASCADE
12// commercial license or contractual agreement.
b311480e 13
7fd59977 14//:k1 abv 16.12.98 K4L PRO10107, PRO10108, PRO10109
15//:j8 abv 10.12.98 TR10 r0501_db.stp #9423
16//:S4030 abv, pdn: new methods - interface to standard ProjLib_CompProjectedCurve
17//%12 pdn 15.02.99 PRO9234 optimizing
18//%12 pdn 15.02.99 PRO9234 using improved ProjectDegenerated method
19// rln 03.03.99 S4135: bm2_sd_t4-A.stp treatment of Geom_SphericalSurface together with V-closed surfaces
20//:p9 abv 11.03.99 PRO7226 #489490: make IsAnIsoparametric to find nearest case
21//:q1 abv 15.03.99 (pdn) PRO7226 #525030: limit NextValueOfUV() by tolerance
22//:q5 abv 19.03.99 code improvement
23//:q9 abv 23.03.99 PRO7226.stp #489490: cashe for projecting end points
24//#78 rln 12.03.99 S4135: checking spatial closure with myPreci
25// pdn 12.03.99 S4135: creating pcurve with minimal length in the case of densed points
26// abv 29.03.99 IsAnIsoparametric with Precision::Confusion
27// pdn 09.04.99 IsAnisoparametric uses already computed parameters (S4030, fix PRO14323)
28//szv#4 S4163
29//:s5 abv 22.04.99 Adding debug printouts in catch {} blocks
30//#1 svv 11.01.00 Porting on DEC
7fd59977 31
42cf5bc1 32#include <Approx_CurveOnSurface.hxx>
33#include <Geom2d_BSplineCurve.hxx>
9a6ea9c4 34#include <Geom2d_Circle.hxx>
42cf5bc1 35#include <Geom2d_Curve.hxx>
9a6ea9c4 36#include <Geom2d_Ellipse.hxx>
37#include <Geom2d_Hyperbola.hxx>
42cf5bc1 38#include <Geom2d_Line.hxx>
9a6ea9c4 39#include <Geom2d_Parabola.hxx>
7fd59977 40#include <Geom2d_TrimmedCurve.hxx>
42cf5bc1 41#include <Geom2dAdaptor.hxx>
42#include <Geom2dAPI_Interpolate.hxx>
43#include <Geom_BezierSurface.hxx>
44#include <Geom_BoundedCurve.hxx>
7fd59977 45#include <Geom_BSplineCurve.hxx>
42cf5bc1 46#include <Geom_BSplineSurface.hxx>
47#include <Geom_Curve.hxx>
7fd59977 48#include <Geom_OffsetSurface.hxx>
49#include <Geom_Plane.hxx>
42cf5bc1 50#include <Geom_RectangularTrimmedSurface.hxx>
51#include <Geom_SphericalSurface.hxx>
52#include <Geom_Surface.hxx>
53#include <Geom_SurfaceOfLinearExtrusion.hxx>
54#include <Geom_TrimmedCurve.hxx>
7fd59977 55#include <GeomAdaptor_HCurve.hxx>
42cf5bc1 56#include <GeomAdaptor_HSurface.hxx>
57#include <GeomAPI_Interpolate.hxx>
58#include <GeomAPI_PointsToBSpline.hxx>
59#include <GeomProjLib.hxx>
60#include <gp_Pnt2d.hxx>
61#include <NCollection_Sequence.hxx>
62#include <Precision.hxx>
63#include <ProjLib_CompProjectedCurve.hxx>
64#include <ProjLib_HCompProjectedCurve.hxx>
65#include <ProjLib_ProjectedCurve.hxx>
02fd709b 66#include <ShapeAnalysis.hxx>
7fd59977 67#include <ShapeAnalysis_Curve.hxx>
68#include <ShapeAnalysis_Surface.hxx>
42cf5bc1 69#include <ShapeConstruct_ProjectCurveOnSurface.hxx>
7fd59977 70#include <ShapeExtend.hxx>
42cf5bc1 71#include <Standard_ErrorHandler.hxx>
72#include <Standard_Failure.hxx>
73#include <Standard_Type.hxx>
74#include <TColgp_Array1OfPnt.hxx>
75#include <TColStd_Array1OfInteger.hxx>
7fd59977 76
42cf5bc1 77#include <algorithm>
92efcf78 78IMPLEMENT_STANDARD_RTTIEXT(ShapeConstruct_ProjectCurveOnSurface,MMgt_TShared)
79
7fd59977 80#define NCONTROL 23
b311480e 81
7fd59977 82//=======================================================================
83//function : ShapeConstruct_ProjectCurveOnSurface
84//purpose :
85//=======================================================================
86
87ShapeConstruct_ProjectCurveOnSurface::ShapeConstruct_ProjectCurveOnSurface()
88{
89 myPreci = Precision::Confusion();
90 myBuild = Standard_False;
91 myAdjustOverDegen = 1; //:c0 //szv#4:S4163:12Mar99 was boolean
92 myNbCashe = 0; //:q9
93}
94
95//=======================================================================
96//function : Init
97//purpose :
98//=======================================================================
99
100 void ShapeConstruct_ProjectCurveOnSurface::Init(const Handle(Geom_Surface)& surf,const Standard_Real preci)
101{
102 Init (new ShapeAnalysis_Surface (surf), preci);
103}
104
105//=======================================================================
106//function : Init
107//purpose :
108//=======================================================================
109
110 void ShapeConstruct_ProjectCurveOnSurface::Init(const Handle(ShapeAnalysis_Surface)& surf,const Standard_Real preci)
111{
112 SetSurface (surf);
113 SetPrecision (preci);
114}
115
116//=======================================================================
117//function : SetSurface
118//purpose :
119//=======================================================================
120
121 void ShapeConstruct_ProjectCurveOnSurface::SetSurface(const Handle(Geom_Surface)& surf)
122{
123 SetSurface (new ShapeAnalysis_Surface (surf));
124}
125
126//=======================================================================
127//function : SetSurface
128//purpose :
129//=======================================================================
130
131 void ShapeConstruct_ProjectCurveOnSurface::SetSurface(const Handle(ShapeAnalysis_Surface)& surf)
132{
133 if ( mySurf == surf ) return;
134 mySurf = surf;
135 myNbCashe = 0; //:q9
136}
137
138//=======================================================================
139//function : SetPrecision
140//purpose :
141//=======================================================================
142
143 void ShapeConstruct_ProjectCurveOnSurface::SetPrecision(const Standard_Real preci)
144{
145 myPreci = preci;
146}
147
148//=======================================================================
149//function : BuildCurveMode
150//purpose :
151//=======================================================================
152
153 Standard_Boolean& ShapeConstruct_ProjectCurveOnSurface::BuildCurveMode()
154{
155 return myBuild;
156}
157
158//=======================================================================
159//function : AdjustOverDegenMode
160//purpose :
161//=======================================================================
162//:c0
163
164//szv#4:S4163:12Mar99 was Boolean
165 Standard_Integer& ShapeConstruct_ProjectCurveOnSurface::AdjustOverDegenMode()
166 {
167 return myAdjustOverDegen;
168 }
169
170
171//=======================================================================
172//function : NbSurfIntervals
173//purpose : work-around of bug in standard method
174// GeomAdaptor_Surface->NbIntervals() (PRO16346)
175//=======================================================================
176
177static Standard_Integer NbSurfIntervals(const Handle(GeomAdaptor_HSurface)& GAS, const GeomAbs_Shape cont)
178{
179 Standard_Integer NbU = 0;
180 if (GAS->GetType() == GeomAbs_SurfaceOfExtrusion) {
181 // extract the surface
182 Handle(Geom_SurfaceOfLinearExtrusion) surf = Handle(Geom_SurfaceOfLinearExtrusion)::DownCast(GAS->ChangeSurface().Surface());
183 // build a 3d adaptor curve
184 GeomAdaptor_Curve Adaptor3dCurve(surf->BasisCurve(), GAS->FirstUParameter(), GAS->LastUParameter());
185 if (Adaptor3dCurve.GetType() == GeomAbs_BSplineCurve)
186 NbU = Adaptor3dCurve.NbIntervals(cont);
187 }
188 if (NbU == 0)
189 NbU = GAS->NbUIntervals(cont);
190 return NbU * (GAS->NbVIntervals(cont));
191}
192
193//=======================================================================
194//function : Status
195//purpose :
196//=======================================================================
197
198 Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::Status (const ShapeExtend_Status Status) const
199{
200 return ShapeExtend::DecodeStatus (myStatus, Status);
201}
202
203//=======================================================================
204//function : Perform
205//purpose :
206//=======================================================================
7fd59977 207Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::Perform (Handle(Geom_Curve)& c3d,
208 const Standard_Real First,
209 const Standard_Real Last,
210 Handle(Geom2d_Curve)& c2d,
211 const GeomAbs_Shape,
212 const Standard_Integer,
213 const Standard_Integer)
214{
215 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK);
216 //Standard_Boolean OK = Standard_True; //szv#4:S4163:12Mar99 not needed
217
218 if (mySurf.IsNull()) {
219 c2d.Nullify();
220 myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_FAIL1);
221 return Standard_False;
222 }
7fd59977 223// Projection Analytique
224 Handle(Geom_Curve) crv3dtrim = c3d;
225 if ( ! c3d->IsKind(STANDARD_TYPE(Geom_BoundedCurve)) )
226 crv3dtrim = new Geom_TrimmedCurve ( c3d, First, Last );
227 c2d = ProjectAnalytic ( crv3dtrim );
228 if (!c2d.IsNull()) {
229 myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
230 return Standard_True;
231 }
232
233// Projection par approximation
234
235 // discretize the 3d curve
236
237 Standard_Integer nbrPnt;
238
239// $$$$ :92 abv 28 Jan 98 see PRO10107, big BSplineCurve C0
240 Standard_Integer nbPini = NCONTROL; // as in BRepCheck_Edge (RLN/Nijni)
241 // 20; // number of points for interpolation, should be "parametric dependent"
242
243 //:92 abv 28 Jan 98: if curve is BSpline with many intervals,
244 // increase number of points to provide at least Degree()+1 points per interval
245 Handle(Geom_BSplineCurve) bspl;
246 if ( c3d->IsKind(STANDARD_TYPE(Geom_TrimmedCurve)) ) {
247 Handle(Geom_TrimmedCurve) ctrim = Handle(Geom_TrimmedCurve)::DownCast(c3d);
248 bspl = Handle(Geom_BSplineCurve)::DownCast ( ctrim->BasisCurve() );
249 }
250 else bspl = Handle(Geom_BSplineCurve)::DownCast ( c3d );
251 if ( ! bspl.IsNull() ) {
252 Standard_Integer nint = 0;
253 for ( Standard_Integer i=1; i < bspl->NbKnots(); i++ )
254 if ( bspl->Knot(i+1) > First && bspl->Knot(i) < Last ) nint++;
255 Standard_Integer minPnt = nint * ( bspl->Degree() + 1 );
256 while ( nbPini < minPnt ) nbPini += NCONTROL - 1;
0797d9d3 257#ifdef OCCT_DEBUG
7fd59977 258 if ( nbPini > NCONTROL )
259 cout << "Warning: number of points for projecting is " << nbPini << endl;
260#endif
261 }
262
263// $$$$ end :92 (big BSplineCurve C0)
264
265 // this number should be "parametric dependent"
9a6ea9c4 266 TColgp_Array1OfPnt points(1, nbPini);
7fd59977 267 TColStd_Array1OfReal params(1, nbPini);
9a6ea9c4 268 NCollection_Sequence<Standard_Real> aKnotCoeffs;
7fd59977 269 gp_Pnt p3d;
9a6ea9c4 270 Standard_Integer iPnt;
271
272 // In case of bspline compute parametrization speed on each
273 // knot interval inside [aFirstParam, aLastParam].
274 // If quotient = (MaxSpeed / MinSpeed) >= aMaxQuotientCoeff then
275 // use PerformByProjLib algorithm.
276 if(!bspl.IsNull())
277 {
9a6ea9c4 278 Standard_Real aFirstParam = First; // First parameter of current interval.
279 Standard_Real aLastParam = Last; // Last parameter of current interval.
280
281 // First index computation.
282 Standard_Integer anIdx = 1;
283 for(; anIdx <= bspl->NbKnots() && aFirstParam < Last; anIdx++)
284 {
285 if(bspl->Knot(anIdx) > First)
286 {
287 break;
288 }
289 }
290
6a2ee094 291 GeomAdaptor_Curve aC3DAdaptor(c3d);
292
9a6ea9c4 293 for(; anIdx <= bspl->NbKnots() && aFirstParam < Last; anIdx++)
294 {
295 // Fill current knot interval.
296 aLastParam = Min(Last, bspl->Knot(anIdx));
6a2ee094 297 Standard_Integer aNbIntPnts = NCONTROL;
298 // Number of inner points is adapted according to the length of the interval
299 // to avoid a lot of calculations on small range of parameters.
300 if (anIdx > 1)
301 {
302 const Standard_Real aLenThres = 1.e-2;
303 const Standard_Real aLenRatio =
304 (aLastParam - aFirstParam) / (bspl->Knot(anIdx) - bspl->Knot(anIdx - 1));
305 if (aLenRatio < aLenThres)
306 {
307 aNbIntPnts = Standard_Integer(aLenRatio / aLenThres * aNbIntPnts);
308 if (aNbIntPnts < 2)
309 aNbIntPnts = 2;
310 }
311 }
9a6ea9c4 312 Standard_Real aStep = (aLastParam - aFirstParam) / (aNbIntPnts - 1);
313 Standard_Integer anIntIdx;
314 gp_Pnt p3d1, p3d2;
6a2ee094 315 // Start filling from first point.
316 aC3DAdaptor.D0(aFirstParam, p3d1);
317
9a6ea9c4 318 Standard_Real aLength3d = 0.0;
6a2ee094 319 for(anIntIdx = 1; anIntIdx < aNbIntPnts; anIntIdx++)
9a6ea9c4 320 {
6a2ee094 321 Standard_Real aParam = aFirstParam + aStep * anIntIdx;
322 aC3DAdaptor.D0 (aParam, p3d2);
9a6ea9c4 323 aLength3d += p3d2.Distance(p3d1);
6a2ee094 324 p3d1 = p3d2;
9a6ea9c4 325 }
6a2ee094 326 const Standard_Real aCoeff = aLength3d / (aLastParam - aFirstParam);
327 if (Abs(aCoeff) > gp::Resolution())
328 aKnotCoeffs.Append(aCoeff);
9a6ea9c4 329 aFirstParam = aLastParam;
330 }
331
332 Standard_Real anEvenlyCoeff = 0;
333 if (aKnotCoeffs.Size() > 0)
334 {
335 anEvenlyCoeff = *std::max_element(aKnotCoeffs.begin(), aKnotCoeffs.end()) /
336 *std::min_element(aKnotCoeffs.begin(), aKnotCoeffs.end());
337 }
338
339 const Standard_Real aMaxQuotientCoeff = 1500.0;
340 if (anEvenlyCoeff > aMaxQuotientCoeff)
341 {
342 PerformByProjLib(c3d, First, Last, c2d);
343 // PerformByProjLib fail detection:
344 if (!c2d.IsNull())
345 {
346 return Status (ShapeExtend_DONE);
347 }
348 }
349 }
350
7fd59977 351 Standard_Real deltaT, t;
352 deltaT = (Last - First) / (nbPini-1);
353 nbrPnt = nbPini;
9a6ea9c4 354 for (iPnt = 1; iPnt <= nbPini; iPnt ++)
355 {
7fd59977 356 if (iPnt == 1) t = First;
357 else if (iPnt == nbPini) t = Last;
358 else t = First + (iPnt - 1) * deltaT;
359
360 c3d->D0 (t, p3d);
361 points(iPnt) = p3d;
362 params(iPnt) = t;
363 }
364
9a6ea9c4 365 // CALCUL par approximation
7fd59977 366 TColgp_Array1OfPnt2d pnt2d(1, nbrPnt);
367 ApproxPCurve (nbrPnt,points,params,pnt2d,c2d); //szv#4:S4163:12Mar99 OK not needed
368 if (!c2d.IsNull()) {
369 myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_DONE2);
370 return Standard_True;
371 }// cas particulier d iso
372
373// INTERPOLATION du resultat
374
375 if ( myBuild ) {
376 Handle(TColgp_HArray1OfPnt) thePnts = new TColgp_HArray1OfPnt (1, nbPini);
377 Handle(TColStd_HArray1OfReal) theParams = new TColStd_HArray1OfReal(1, nbPini);
378 for (iPnt = 1; iPnt <= nbPini ; iPnt ++) {
379 thePnts->SetValue(iPnt, points(iPnt));
380 theParams->SetValue(iPnt, params(iPnt));
381 }
382
383 Handle(Geom_Curve) newc3d = InterpolateCurve3d (nbPini,thePnts,theParams, c3d);
384 if ( newc3d.IsNull() ) myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_FAIL2);
385 else {
386 myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_DONE3);
387 c3d = newc3d;
388 }
389 }
390
391 Handle(TColgp_HArray1OfPnt2d) thePnts2d = new TColgp_HArray1OfPnt2d(1, nbPini);
392 Handle(TColStd_HArray1OfReal) theParams2d = new TColStd_HArray1OfReal(1, nbPini);
393 for (iPnt = 1; iPnt <= nbPini ; iPnt ++) {
394 theParams2d->SetValue(iPnt, params(iPnt));
395 thePnts2d->SetValue(iPnt, pnt2d(iPnt));
396 }
397
398 c2d = InterpolatePCurve (nbPini, thePnts2d, theParams2d, c3d);
399// c2d = ApproximatePCurve (nbPini, thePnts2d, theParams2d, c3d);
400// Faut-il aussi reprendre la C3D ?
7fd59977 401 myStatus |= ShapeExtend::EncodeStatus (c2d.IsNull() ? ShapeExtend_FAIL1 : ShapeExtend_DONE2);
402 return Status (ShapeExtend_DONE);
403}
404
405//=======================================================================
406//function : PerformByProjLib
407//purpose :
408//=======================================================================
409
410Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::PerformByProjLib(Handle(Geom_Curve)& c3d,
411 const Standard_Real First,
412 const Standard_Real Last,
413 Handle(Geom2d_Curve)& c2d,
9a6ea9c4 414 const GeomAbs_Shape /*continuity*/,
415 const Standard_Integer /*maxdeg */,
416 const Standard_Integer /*nbinterval */)
7fd59977 417{
418 //Standard_Boolean OK = Standard_True; //szv#4:S4163:12Mar99 unused
419 c2d.Nullify();
420 if (mySurf.IsNull()) {
421 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_FAIL1);
422 return Standard_False;
423 }
424
9a6ea9c4 425 try
426 {
7fd59977 427 OCC_CATCH_SIGNALS
428 Handle(GeomAdaptor_HSurface) GAS = mySurf->Adaptor3d();
7fd59977 429 Handle(GeomAdaptor_HCurve) GAC = new GeomAdaptor_HCurve (c3d,First,Last);
9a6ea9c4 430 ProjLib_ProjectedCurve Projector(GAS, GAC);
431
432 switch (Projector.GetType())
433 {
434 case GeomAbs_Line :
435 c2d = new Geom2d_Line(Projector.Line());
436 break;
437 case GeomAbs_Circle :
438 c2d = new Geom2d_Circle(Projector.Circle());
439 break;
440 case GeomAbs_Ellipse :
441 c2d = new Geom2d_Ellipse(Projector.Ellipse());
442 break;
443 case GeomAbs_Parabola :
444 c2d = new Geom2d_Parabola(Projector.Parabola());
445 break;
446 case GeomAbs_Hyperbola :
447 c2d = new Geom2d_Hyperbola(Projector.Hyperbola());
448 break;
449 case GeomAbs_BSplineCurve :
450 c2d = Projector.BSpline();
451 break;
1aec3320 452 default:
9a6ea9c4 453 // Not possible, handling added to avoid gcc warning.
454 break;
7fd59977 455 }
9a6ea9c4 456
457 if(c2d.IsNull())
458 {
7fd59977 459 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_FAIL2);
460 return Standard_False;
461 }
9a6ea9c4 462 else
463 {
7fd59977 464 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
465 return Standard_True;
466 }
467
468 }
9a6ea9c4 469 catch(Standard_Failure)
470 {
0797d9d3 471#ifdef OCCT_DEBUG
7fd59977 472 cout << "Warning: ShapeConstruct_ProjectCurveOnSurface::PerformByProjLib(): Exception: ";
473 Standard_Failure::Caught()->Print(cout); cout << endl;
474#endif
475 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_FAIL3);
476 c2d.Nullify();
477 }
478 return Standard_False;
479}
480
481//=======================================================================
482//function : PerformAdvanced
483//purpose :
484//=======================================================================
485
486Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::PerformAdvanced (Handle(Geom_Curve)& c3d,
487 const Standard_Real First,
488 const Standard_Real Last,
489 Handle(Geom2d_Curve)& c2d)
490{
491 Standard_Boolean hasResult = Standard_False;
492 Standard_Integer nbintervals;
493
494 Standard_Boolean isStandard = (mySurf->Adaptor3d()->GetType() != GeomAbs_Cylinder);
495// && (mySurf->Adaptor3d()->GetType() != GeomAbs_SurfaceOfRevolution);
496
497 if (isStandard) isStandard = !mySurf->HasSingularities(myPreci);
498 if (isStandard) {
499 Handle(GeomAdaptor_HSurface) GAS = mySurf->Adaptor3d();
500 Handle(GeomAdaptor_HCurve) GAC = new GeomAdaptor_HCurve (c3d,First,Last);
501 nbintervals = NbSurfIntervals(GAS, GeomAbs_C1);//+GAC->NbIntervals(GeomAbs_C3);
502 isStandard = (nbintervals < 2);
503 }
504 if (isStandard) {
505 hasResult = PerformByProjLib(c3d, First, Last, c2d);
506 }
507 if (!hasResult) hasResult = Perform (c3d, First, Last, c2d);
508 return hasResult;
509}
510
511//=======================================================================
512//function : ProjectAnalytic
513//purpose :
514//=======================================================================
515
516 Handle(Geom2d_Curve) ShapeConstruct_ProjectCurveOnSurface::ProjectAnalytic(const Handle(Geom_Curve)& c3d) const
517{
518 Handle(Geom2d_Curve) result;
519
520 //:k1 abv 16 Dec 98: limit analytic cases by Plane surfaces only
521 // This is necessary for K4L since it fails on other surfaces
522 // when general method GeomProjLib::Curve2d() is used
523 // Projection is done as in BRep_Tool and BRepCheck_Edge
524 Handle(Geom_Surface) surf = mySurf->Surface();
525 Handle(Geom_Plane) Plane = Handle(Geom_Plane)::DownCast ( surf );
526 if ( Plane.IsNull() ) {
527 Handle(Geom_RectangularTrimmedSurface) RTS =
528 Handle(Geom_RectangularTrimmedSurface)::DownCast ( surf );
529 if ( ! RTS.IsNull() ) Plane = Handle(Geom_Plane)::DownCast ( RTS->BasisSurface() );
530 else {
531 Handle(Geom_OffsetSurface) OS =
532 Handle(Geom_OffsetSurface)::DownCast ( surf );
533 if ( ! OS.IsNull() )
534 Plane = Handle(Geom_Plane)::DownCast ( OS->BasisSurface() );
535 }
536 }
537 if ( ! Plane.IsNull() ) {
538 Handle(Geom_Curve) ProjOnPlane =
539 GeomProjLib::ProjectOnPlane (c3d, Plane,
540 Plane->Position().Direction(), Standard_True);
541 Handle(GeomAdaptor_HCurve) HC = new GeomAdaptor_HCurve ( ProjOnPlane );
542 ProjLib_ProjectedCurve Proj ( mySurf->Adaptor3d(), HC );
543
544 result = Geom2dAdaptor::MakeCurve(Proj);
545 if ( result.IsNull() ) return result;
546 if ( result->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve)) ) {
547 Handle(Geom2d_TrimmedCurve) TC = Handle(Geom2d_TrimmedCurve)::DownCast ( result );
548 result = TC->BasisCurve();
549 }
63c629aa 550
7fd59977 551 return result;
552 }
553
554 return result;
555}
556
15b54261 557 //! Fix possible period jump and handle walking period parameter.
558 static Standard_Boolean fixPeriodictyTroubles(gp_Pnt2d *thePnt, // pointer to gp_Pnt2d[4] beginning
559 Standard_Integer theIdx, // Index of objective coord: 1 ~ X, 2 ~ Y
02fd709b 560 Standard_Real thePeriod, // Period on objective coord
561 Standard_Integer theSavedPoint, // Point number to choose period
562 Standard_Real theSavedParam) // Param from cashe to choose period
563{
564 Standard_Real aSavedParam;
565 Standard_Integer aSavedPoint;
566 Standard_Real aMinParam = 0.0, aMaxParam = thePeriod;
567 if (theSavedPoint < 0) {
568 // normalize to first period by default
569 aSavedParam = 0.5 * thePeriod;
570 aSavedPoint = 0;
571 }
572 else {
573 aSavedParam = theSavedParam;
574 aSavedPoint = theSavedPoint;
575 while (aMinParam > aSavedParam) {
576 aMinParam -= thePeriod;
577 aMaxParam -= thePeriod;
578 }
579 while (aMaxParam < aSavedParam) {
580 aMinParam += thePeriod;
581 aMaxParam += thePeriod;
582 }
583 }
15b54261 584
02fd709b 585 Standard_Real aFixIsoParam = aMinParam;
586 Standard_Boolean isIsoLine = Standard_False;
587 if (aMaxParam - aSavedParam < Precision::PConfusion() ||
588 aSavedParam - aMinParam < Precision::PConfusion()) {
589 aFixIsoParam = aSavedParam;
590 isIsoLine = Standard_True;
591 }
592 // normalize all coordinates to [aMinParam, aMaxParam)
593 for (Standard_Integer i = 0; i < 4; i++) {
594 Standard_Real aParam = thePnt[i].Coord(theIdx);
595 Standard_Real aShift = ShapeAnalysis::AdjustToPeriod(aParam, aMinParam, aMaxParam);
596 aParam += aShift;
597 // Walk over period coord -> not walking on another isoline in parameter space.
598 if (isIsoLine) {
599 if (aMaxParam - aParam < Precision::PConfusion() || aParam - aMinParam < Precision::PConfusion())
600 aParam = aFixIsoParam;
601 }
602 else {
603 if (aMaxParam - aParam < Precision::PConfusion())
604 aParam = aMaxParam;
605 if (aParam - aMinParam < Precision::PConfusion())
606 aParam = aMinParam;
607 }
15b54261 608
02fd709b 609 thePnt[i].SetCoord(theIdx, aParam);
610 }
15b54261 611
02fd709b 612 // find possible period jump and increasing or decreasing coordinates vector
613 Standard_Boolean isJump = Standard_False;
614 Standard_Real aPrevDiff = 0.0;
615 Standard_Real aSumDiff = 1.0;
616 for (Standard_Integer i = 0; i < 3; i++) {
617 Standard_Real aDiff = thePnt[i + 1].Coord(theIdx) - thePnt[i].Coord(theIdx);
618 if (aDiff < -Precision::PConfusion()) {
619 aSumDiff *= -1.0;
620 }
621 //if first derivative changes its sign then period jump may exists in this place
622 if (aDiff * aPrevDiff < -Precision::PConfusion()) {
623 isJump = Standard_True;
624 }
625 aPrevDiff = aDiff;
626 }
15b54261 627
02fd709b 628 if (!isJump)
629 return Standard_False;
630
631 if (aSumDiff > 0) { // decreasing sequence (parameters decrease twice(--) and one period jump(+))
632 for (Standard_Integer i = aSavedPoint; i > 0; i--)
633 if (thePnt[i].Coord(theIdx) > thePnt[i - 1].Coord(theIdx)) {
634 thePnt[i - 1].SetCoord(theIdx, thePnt[i - 1].Coord(theIdx) + thePeriod);
635 }
636 for (Standard_Integer i = aSavedPoint; i < 3; i++)
637 if (thePnt[i].Coord(theIdx) < thePnt[i + 1].Coord(theIdx)) {
638 thePnt[i + 1].SetCoord(theIdx, thePnt[i + 1].Coord(theIdx) - thePeriod);
639 }
640 }
641 else {// increasing sequence (parameters increase twice(++) and one period jump(-))
642 for (Standard_Integer i = aSavedPoint; i > 0; i--)
643 if (thePnt[i].Coord(theIdx) < thePnt[i - 1].Coord(theIdx)) {
644 thePnt[i - 1].SetCoord(theIdx, thePnt[i - 1].Coord(theIdx) - thePeriod);
645 }
646 for (Standard_Integer i = aSavedPoint; i < 3; i++)
647 if (thePnt[i].Coord(theIdx) > thePnt[i + 1].Coord(theIdx)) {
648 thePnt[i + 1].SetCoord(theIdx, thePnt[i + 1].Coord(theIdx) + thePeriod);
649 }
650 }
15b54261 651
02fd709b 652 // Do not return false, because for nonlinear 2d curves vector of parameters
653 // may change its first derivative and shifted parameters will be broken for this case.
654 return Standard_True;
15b54261 655 }
656
657//=======================================================================
658//function : getLine
659//purpose :
660//=======================================================================
661
662 Handle(Geom2d_Curve) ShapeConstruct_ProjectCurveOnSurface::getLine(
663 const TColgp_Array1OfPnt& thepoints,
664 const TColStd_Array1OfReal& theparams,
665 TColgp_Array1OfPnt2d& thePnt2ds,
666 Standard_Real theTol,
02fd709b 667 Standard_Boolean &isRecompute,
668 Standard_Boolean &isFromCashe) const
15b54261 669 {
670 Standard_Integer nb = thepoints.Length();
671 gp_Pnt aP[4];
672 aP[0] = thepoints(1);
673 aP[1] = thepoints(2);
674 aP[2] = thepoints(nb - 1);
675 aP[3] = thepoints(nb);
676 gp_Pnt2d aP2d[4];
677 Standard_Integer i = 0;
678
679 Standard_Real aTol2 = theTol * theTol;
680 Standard_Boolean isPeriodicU = mySurf->Surface()->IsUPeriodic();
681 Standard_Boolean isPeriodicV = mySurf->Surface()->IsVPeriodic();
682
683 // Workaround:
684 // Protection against bad "tolerance" shapes.
685 if (aTol2 > 1.0)
686 {
687 theTol = Precision::Confusion();
688 aTol2 = theTol * theTol;
689 }
02fd709b 690 if (aTol2 < Precision::SquareConfusion())
691 aTol2 = Precision::SquareConfusion();
15b54261 692 Standard_Real anOldTol2 = aTol2;
02fd709b 693 // auxiliary variables to choose period for connection with previous 2dcurve (if exist)
694 Standard_Integer aSavedPointNum = -1;
695 gp_Pnt2d aSavedPoint;
15b54261 696
697 // project first and last points
698 for( ; i < 4; i +=3)
699 {
700 Standard_Integer j;
701 for ( j=0; j < myNbCashe; j++ )
702 if ( myCashe3d[j].SquareDistance (aP[i] ) < aTol2)
703 {
704 aP2d[i] = mySurf->NextValueOfUV (myCashe2d[j], aP[i], theTol,
705 theTol);
02fd709b 706 aSavedPointNum = i;
707 aSavedPoint = myCashe2d[j];
708 if (i == 0)
709 isFromCashe = Standard_True;
15b54261 710 break;
711 }
712 if ( j >= myNbCashe )
713 aP2d[i] = mySurf->ValueOfUV(aP[i], theTol);
714
715 Standard_Real aDist = mySurf->Gap();
716 Standard_Real aCurDist = aDist * aDist;
717 if( aTol2 < aDist * aDist)
718 aTol2 = aCurDist;
719 }
720
721 if ( isPeriodicU || isPeriodicV )
722 {
723 // Compute second and last but one c2d points.
724 for(i = 1; i < 3; i++)
725 {
726 Standard_Integer j;
727 for ( j=0; j < myNbCashe; j++ )
728 if ( myCashe3d[j].SquareDistance (aP[i] ) < aTol2)
729 {
730 aP2d[i] = mySurf->NextValueOfUV (myCashe2d[j], aP[i], theTol, theTol);
02fd709b 731 aSavedPointNum = i;
732 aSavedPoint = myCashe2d[j];
15b54261 733 break;
734 }
735 if ( j >= myNbCashe )
736 aP2d[i] = mySurf->ValueOfUV(aP[i], theTol);
737
738 Standard_Real aDist = mySurf->Gap();
739 Standard_Real aCurDist = aDist * aDist;
740 if( aTol2 < aDist * aDist)
741 aTol2 = aCurDist;
742 }
743
744 if (isPeriodicU)
745 {
02fd709b 746 isRecompute = fixPeriodictyTroubles(&aP2d[0], 1 /* X Coord */, mySurf->Surface()->UPeriod(), aSavedPointNum, aSavedPoint.X());
15b54261 747 }
748
749 if (isPeriodicV)
750 {
02fd709b 751 isRecompute = fixPeriodictyTroubles(&aP2d[0], 2 /* Y Coord */, mySurf->Surface()->VPeriod(), aSavedPointNum, aSavedPoint.Y());
15b54261 752 }
753 }
754
02fd709b 755 if (isRecompute && mySurf->Surface()->IsKind(STANDARD_TYPE(Geom_SphericalSurface))) {
756 // Do not try to make line, because in this case may be very special case when 3d curve
757 // go over the pole of, e.g., sphere, and partly lies along seam
758 // (see ApproxPCurve() for more information).
759 return 0;
760 }
761
15b54261 762 thePnt2ds.SetValue(1, aP2d[0]);
763 thePnt2ds.SetValue(nb, aP2d[3]);
764
765 // Restore old tolerance in 2d space to avoid big gap cases.
766 aTol2 = anOldTol2;
767 // Check that straight line in 2d with parameterisation as in 3d will fit
768 // fit 3d curve at all points.
769 Standard_Real dPar = theparams(nb) - theparams(1);
770 if ( Abs(dPar) < Precision::PConfusion() )
771 return 0;
772 gp_Vec2d aVec0 (aP2d[0], aP2d[3]);
773 gp_Vec2d aVec = aVec0 / dPar;
02fd709b 774 Handle(Geom_Surface) aSurf = mySurf->Surface();
775 Standard_Boolean isNormalCheck = aSurf->IsCNu(1) && aSurf->IsCNv(1);
776 if (isNormalCheck) {
777 for(i = 1; i <= nb; i++)
778 {
779 gp_XY aCurPoint = aP2d[0].XY() + aVec.XY() * (theparams(i) - theparams(1));
780 gp_Pnt aCurP;
781 gp_Vec aNormalVec, aDu, aDv;
782 aSurf->D1(aCurPoint.X(), aCurPoint.Y(), aCurP, aDu, aDv);
783 aNormalVec = aDu ^ aDv;
784 if (aNormalVec.SquareMagnitude() < Precision::SquareConfusion()) {
785 isNormalCheck = Standard_False;
786 break;
787 }
788 gp_Lin aNormalLine(aCurP, gp_Dir(aNormalVec));
789 Standard_Real aDist = aNormalLine.Distance(thepoints(i));
790 if (aDist > theTol)
791 return 0;
792 }
793 }
794 if (!isNormalCheck) {
795 Standard_Real aFirstPointDist = mySurf->Surface()->Value(aP2d[0].X(), aP2d[0].Y()).
796 SquareDistance(thepoints(1));
797 aTol2 = Max(aTol2, aTol2 * 2 * aFirstPointDist);
798 for(i = 2; i < nb; i++)
799 {
800 gp_XY aCurPoint = aP2d[0].XY() + aVec.XY() * (theparams(i) - theparams(1));
801 gp_Pnt aCurP;
802 aSurf->D0(aCurPoint.X(), aCurPoint.Y(), aCurP);
803 Standard_Real aDist1 = aCurP.SquareDistance(thepoints(i));
804
805 if(Abs (aFirstPointDist - aDist1) > aTol2)
806 return 0;
807 }
15b54261 808 }
809
810 // check if pcurve can be represented by Geom2d_Line (parameterised by length)
811 Standard_Real aLLength = aVec0.Magnitude();
812 if ( Abs (aLLength - dPar) <= Precision::PConfusion() )
813 {
814 gp_XY aDirL = aVec0.XY() / aLLength;
815 gp_Pnt2d aPL (aP2d[0].XY() - theparams(1) * aDirL);
816 return new Geom2d_Line (aPL, gp_Dir2d(aDirL));
817 }
818
819 // create straight bspline
820 TColgp_Array1OfPnt2d aPoles(1, 2);
821 aPoles(1) = aP2d[0];
822 aPoles(2) = aP2d[3];
823
824 TColStd_Array1OfReal aKnots(1,2);
825 aKnots(1) = theparams(1);
826 aKnots(2) = theparams(theparams.Length());
827
828 TColStd_Array1OfInteger aMults(1,2);
829 aMults(1) = 2;
830 aMults(2) = 2;
831 Standard_Integer aDegree = 1;
832 Handle(Geom2d_BSplineCurve) abspl2d =
833 new Geom2d_BSplineCurve (aPoles, aKnots, aMults, aDegree);
834 return abspl2d;
835 }
836
7fd59977 837//=======================================================================
838//function : ApproxPCurve
839//purpose :
840//=======================================================================
841
15b54261 842 Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::ApproxPCurve(const Standard_Integer nbrPnt,
7fd59977 843 const TColgp_Array1OfPnt& points,
844 const TColStd_Array1OfReal& params,
845 TColgp_Array1OfPnt2d& pnt2d,
846 Handle(Geom2d_Curve)& c2d)
847{
15b54261 848 // for performance, first try to handle typical case when pcurve is straight
849 Standard_Boolean isRecompute = Standard_False;
02fd709b 850 Standard_Boolean isFromCasheLine = Standard_False;
851 c2d = getLine(points, params, pnt2d, myPreci, isRecompute, isFromCasheLine);
15b54261 852 if(!c2d.IsNull())
853 {
02fd709b 854 // fill cashe
855 Standard_Boolean ChangeCycle = Standard_False;
856 if(myNbCashe>0 && myCashe3d[0].Distance(points(1)) > myCashe3d[0].Distance(points(nbrPnt)) &&
857 myCashe3d[0].Distance(points(nbrPnt))<Precision::Confusion())
858 ChangeCycle = Standard_True;
859 myNbCashe = 2;
860 if(ChangeCycle) {
861 myCashe3d[0] = points(1);
862 myCashe3d[1] = points(nbrPnt);
863 myCashe2d[0] = pnt2d(1);
864 myCashe2d[1] = pnt2d(nbrPnt);
865 }
866 else {
867 myCashe3d[1] = points(1);
868 myCashe3d[0] = points(nbrPnt);
869 myCashe2d[1] = pnt2d(1);
870 myCashe2d[0] = pnt2d(nbrPnt);
871 }
15b54261 872 return Standard_True;
873 }
874 Standard_Boolean isDone = Standard_True;
7fd59977 875 // test if the curve 3d is a boundary of the surface
876 // (only for Bezier or BSpline surface)
877
878 Standard_Boolean isoParam, isoPar2d3d, isoTypeU, p1OnIso, p2OnIso, isoclosed;
879 gp_Pnt2d valueP1, valueP2;
880 Handle(Geom_Curve) cIso;
881 Standard_Real t1, t2;
882
883 Handle(Standard_Type) sType = mySurf->Surface()->DynamicType();
884 Standard_Boolean isAnalytic = Standard_True;
885 if (sType == STANDARD_TYPE(Geom_BezierSurface) || sType == STANDARD_TYPE(Geom_BSplineSurface)) isAnalytic = Standard_False;
886 Standard_Real uf, ul, vf, vl;
887 mySurf->Surface()->Bounds(uf, ul, vf, vl);
888 isoclosed = Standard_False;
889 TColStd_Array1OfReal pout(1, nbrPnt);
890
891 isoParam = IsAnIsoparametric(nbrPnt, points, params,
892 isoTypeU, p1OnIso, valueP1, p2OnIso, valueP2,
893 isoPar2d3d, cIso, t1, t2, pout);
894
895 // projection of the points on surfaces
896
897 gp_Pnt p3d;
898 gp_Pnt2d p2d;
899 Standard_Integer i;
900 Standard_Real isoValue=0., isoPar1=0., isoPar2=0., tPar=0., tdeb,tfin;
901 Standard_Real Cf, Cl, parf, parl; //szv#4:S4163:12Mar99 dist not needed
902
903 // Le calcul part-il dans le bon sens, c-a-d deb et fin dans le bon ordre ?
904 // Si uclosed et iso en V, attention isoPar1 ET/OU 2 peut toucher la fermeture
905 if(isoParam){
906 if(isoTypeU){
907 isoValue = valueP1.X();
908 isoPar1 = valueP1.Y();
909 isoPar2 = valueP2.Y();
910 isoclosed = mySurf->IsVClosed(myPreci);//#78 rln 12.03.99 S4135
911 parf = vf; parl = vl;
912 }
913 else {
914 isoValue = valueP1.Y();
915 isoPar1 = valueP1.X();
916 isoPar2 = valueP2.X();
917 isoclosed = mySurf->IsUClosed(myPreci);//#78 rln 12.03.99 S4135
918 parf = uf; parl = ul;
919 }
920 if (!isoPar2d3d && !isAnalytic) {
921 Cf = cIso->FirstParameter();
922 Cl = cIso->LastParameter();
923 if (Precision::IsInfinite(Cf)) Cf = -1000;
924 if (Precision::IsInfinite(Cl)) Cl = +1000;
925 //pdn S4030 optimizing and fix isopar case on PRO41323
926 tdeb = pout(2);
927 // dist = ShapeAnalysis_Curve().Project (cIso,points(2),myPreci,pt,tdeb,Cf,Cl);
928 // Chacun des par1 ou par2 est-il sur un bord. Attention first/last : recaler
929 if (isoclosed && (isoPar1 == parf || isoPar1 == parl)) {
930 if (Abs(tdeb-parf) < Abs(tdeb-parl)) isoPar1 = parf;
931 else isoPar1 = parl;
932 if (isoTypeU) valueP1.SetY (isoPar1);
933 else valueP1.SetX (isoPar1);
934 }
935 if (isoclosed && (isoPar2 == parf || isoPar2 == parl)) {
936 //pdn S4030 optimizing and fix isopar case on PRO41323
937 tfin = pout(nbrPnt-1);
938 //dist = ShapeAnalysis_Curve().Project (cIso,points(nbrPnt-1),myPreci,pt,tfin,Cf,Cl);
939 if (Abs(tfin-parf) < Abs(tfin-parl)) isoPar2 = parf;
940 else isoPar2 = parl;
941 if (isoTypeU) valueP2.SetY (isoPar2);
942 else valueP2.SetX (isoPar2);
943 }
944
945 // Interversion Par1/Par2 (ne veut que si les 2 sont sur les bords ...)
946 // Est-ce encore necessaire apres ce qui vient d etre fait ?
947
948 // PTV 05.02.02 fix for translation face from 12_hp_mouse (PARASOLID) face 24008
949 // if curve is periodic do not change the points
950 // skl change "if" for pout(nbrPnt-1) 19.11.2003
951 if (!isoclosed) {
952 if( (Abs(tdeb-isoPar1)>Abs(tdeb-isoPar2)) &&
953 (Abs(pout(nbrPnt-1)-isoPar2)>Abs(pout(nbrPnt-1)-isoPar1)) ) {
954 gp_Pnt2d valueTmp = valueP1;
955 valueP1 = valueP2; valueP2 = valueTmp;
956 if (isoTypeU) {
957 isoValue = valueP1.X();
958 isoPar1 = valueP1.Y();
959 isoPar2 = valueP2.Y();
960 }
961 else {
962 isoValue = valueP1.Y();
963 isoPar1 = valueP1.X();
964 isoPar2 = valueP2.X();
965 }
966 // Fin calcul sens de courbe iso
967 }
968 } // end of fix check 05.02.02
969 }
970 }
971
972 // Si pas isoParam, on a quand meme du p1OnIso/p2OnIso possible ... !!!
973 // (utile pour detromper bug de projection). Mais detromper aussi circularite
974 //else {
975 //if (p1OnIso) valueP1 =
976 //BestExtremum (valueP1,points(1),points(2));
977 //if (p2OnIso) valueP2 =
978 //BestExtremum (valueP2,points(nbrPnt),points(nbrPnt-1));
979 //}
980
981 Standard_Real gap = myPreci; //:q1
982 Standard_Boolean ChangeCycle = Standard_False; //skl for OCC3430
02fd709b 983 // auxiliaruy variables to shift 2dcurve, according to previous
984 Standard_Boolean isFromCashe = Standard_False;
985 gp_Pnt2d aSavedPoint;
7fd59977 986 if( myNbCashe>0 && myCashe3d[0].Distance(points(1))>myCashe3d[0].Distance(points(nbrPnt)) )
987 //if(myCashe3d[0].Distance(points(nbrPnt))<myPreci)
988 if(myCashe3d[0].Distance(points(nbrPnt))<Precision::Confusion())
989 ChangeCycle = Standard_True;
990 //for( i = 1; i <= nbrPnt; i ++) {
991 for(Standard_Integer ii=1; ii<=nbrPnt; ii++) {
992 if(ChangeCycle) //skl for OCC3430
993 i=nbrPnt-ii+1;
994 else
995 i=ii;
996 p3d = points(i);
997 if (isoParam) {
998
999 if (isoPar2d3d) {
1000 if (isoPar2 > isoPar1) tPar = params(i);
1001 else tPar = t1 + t2 - params(i);
1002 } else if (!isAnalytic) {
1003 // projection to iso
1004 if (i==1) tPar = isoPar1;
1005 else if (i==nbrPnt) tPar = isoPar2;
1006 else {
1007 tPar = pout(i);
1008 //:S4030 ShapeAnalysis_Curve().Project (cIso,p3d,myPreci,pt,tPar,Cf,Cl); //szv#4:S4163:12Mar99 `dist=` not needed
1009 }
1010 }
1011
1012 if (!isoPar2d3d && isAnalytic) {
1013 if (i == 1) p2d = valueP1;
1014 else if (i == nbrPnt) p2d = valueP2;
1015 else {
1016 p2d = mySurf->NextValueOfUV(p2d,p3d, myPreci, //%12 pdn 15.02.99 optimizing
1017 Precision::Confusion()+1000*gap); //:q1
1018 gap = mySurf->Gap();
1019 }
1020 } else {
1021 if(isoTypeU) { p2d.SetX(isoValue); p2d.SetY(tPar); }
1022 else { p2d.SetX(tPar); p2d.SetY(isoValue); }
1023 }
1024 }
1025
1026 else {
1027 if ( (i == 1) && p1OnIso) p2d = valueP1;
1028 else if( (i == nbrPnt) && p2OnIso) p2d = valueP2;
1029 else {// general case (not an iso) mais attention aux singularites !
15b54261 1030 // first and last points are already computed by getLine()
1031 if ( (i == 1 || i == nbrPnt))
1032 {
1033 if (!isRecompute)
1034 {
1035 p2d = pnt2d(i);
1036 gap = mySurf->Gap();
02fd709b 1037 if (i == 1) {
1038 isFromCashe = isFromCasheLine;
1039 aSavedPoint = p2d;
1040 }
15b54261 1041 continue;
1042 }
1043 else
1044 {
1045 //:q9 abv 23 Mar 99: use cashe as 1st approach
1046 Standard_Integer j; // svv #1
1047 for ( j=0; j < myNbCashe; j++ )
1048 if ( myCashe3d[j].SquareDistance ( p3d ) < myPreci*myPreci )
1049 {
1050 p2d = mySurf->NextValueOfUV (myCashe2d[j], p3d, myPreci,
1051 Precision::Confusion()+gap);
02fd709b 1052 if (i == 1) {
1053 isFromCashe = Standard_True;
1054 aSavedPoint = myCashe2d[j];
1055 }
15b54261 1056 break;
1057 }
1058 if ( j >= myNbCashe ) p2d = mySurf->ValueOfUV(p3d, myPreci);
1059 }
1060 }
7fd59977 1061 else {
1062 p2d = mySurf->NextValueOfUV (p2d, p3d, myPreci, //:S4030: optimizing
1063 Precision::Confusion()+1000*gap); //:q1
1064 }
1065 gap = mySurf->Gap();
1066 }
1067 }
1068 pnt2d (i) = p2d;
1069 if ( ii > 1 ) {
1070 if(ChangeCycle)
1071 p2d.SetXY ( 2. * p2d.XY() - pnt2d(i+1).XY() );
1072 else
1073 p2d.SetXY ( 2. * p2d.XY() - pnt2d(i-1).XY() );
1074 }
1075 }
1076
1077 //pdn %12 11.02.99 PRO9234 entity 15402
1078 if (!isoPar2d3d) {
1079 mySurf->ProjectDegenerated(nbrPnt,points,pnt2d,myPreci,Standard_True);
1080 mySurf->ProjectDegenerated(nbrPnt,points,pnt2d,myPreci,Standard_False);
1081 }
1082
1083 // attention aux singularites ... (hors cas iso qui les traite deja)
1084 // if (!isoParam) {
1085 // p2d = pnt2d (1);
1086 // if (mySurf->ProjectDegenerated (points(1),myPreci,pnt2d (2),p2d))
1087 // pnt2d (1) = p2d;
1088 // p2d = pnt2d (nbrPnt);
1089 // if (mySurf->ProjectDegenerated (points(nbrPnt),myPreci,pnt2d (nbrPnt-1),p2d))
1090 // pnt2d (nbrPnt) = p2d;
1091 // }
1092
1093 // Si la surface est UCLosed et VClosed, on recadre les points
1094 // algo un peu complique, on retarde l implementation
1095 Standard_Real Up = ul - uf;
1096 Standard_Real Vp = vl - vf;
1097 Standard_Real dist2d;
0797d9d3 1098#ifdef OCCT_DEBUG
7fd59977 1099 if (mySurf->IsUClosed(myPreci) && mySurf->IsVClosed(myPreci)) {//#78 rln 12.03.99 S4135
1100 cout << "WARNING : Recadrage incertain sur U & VClosed" << endl;
1101 }
1102#endif
1103 // Si la surface est UCLosed, on recadre les points
1104 if (mySurf->IsUClosed(myPreci)) {//#78 rln 12.03.99 S4135
1105 // Premier point dans le domain [uf, ul]
1106 Standard_Real prevX, firstX = pnt2d (1).X();
02fd709b 1107 if (!isFromCashe) {
1108 // do not shift 2dcurve, if it connects to previous
1109 while (firstX < uf) { firstX += Up; pnt2d (1).SetX(firstX); }
1110 while (firstX > ul) { firstX -= Up; pnt2d (1).SetX(firstX); }
1111 }
1112 // shift first point, according to cashe
1113 if (mySurf->Surface()->IsUPeriodic() && isFromCashe) {
1114 Standard_Real aMinParam = uf, aMaxParam = ul;
1115 while (aMinParam > aSavedPoint.X()) {
1116 aMinParam -= Up;
1117 aMaxParam -= Up;
1118 }
1119 while (aMaxParam < aSavedPoint.X()) {
1120 aMinParam += Up;
1121 aMaxParam += Up;
1122 }
1123 Standard_Real aShift = ShapeAnalysis::AdjustToPeriod(firstX, aMinParam, aMaxParam);
1124 firstX += aShift;
1125 pnt2d(1).SetX(firstX);
1126 }
7fd59977 1127 prevX = firstX;
1128
1129 //:97 abv 1 Feb 98: treat case when curve is whole out of surface bounds
1130 Standard_Real minX = firstX, maxX = firstX;
1131
1132 // On decalle toujours le suivant
1133 for (i = 2; i <= nbrPnt; i++) {
1134 // dist2d = pnt2d (i-1).Distance(pnt2d (i));
1135 Standard_Real CurX = pnt2d (i).X();
1136 dist2d = Abs (CurX - prevX);
1137 if (dist2d > ( Up / 2) ) {
1138 if (CurX > prevX + Up/2) {
1139 while (CurX > prevX + Up/2) { CurX -= Up; pnt2d (i).SetX (CurX); }
1140 } else if (CurX < prevX - Up/2) {
1141 while (CurX < prevX - Up/2) { CurX += Up; pnt2d (i).SetX (CurX); }
1142 }
1143
1144 }
1145 prevX = CurX;
1146 if ( minX > CurX ) minX = CurX; //:97
1147 else if ( maxX < CurX ) maxX = CurX; //:97
1148 }
1149
1150 //:97
02fd709b 1151 if (!isFromCashe) {
1152 // do not shift 2dcurve, if it connects to previous
1153 Standard_Real midX = 0.5 * ( minX + maxX );
1154 Standard_Real shiftX=0.;
1155 if ( midX > ul ) shiftX = -Up;
1156 else if ( midX < uf ) shiftX = Up;
1157 if ( shiftX != 0. )
1158 for ( i=1; i <= nbrPnt; i++ ) pnt2d(i).SetX ( pnt2d(i).X() + shiftX );
1159 }
7fd59977 1160 }
1161 // Si la surface est VCLosed, on recadre les points
1162 // Same code as UClosed : optimisation souhaitable !!
1163 // CKY : d abord un code IDENTIQUE A UClosed; PUIS le special Seam ...
1164 // Si la surface est UCLosed, on recadre les points
1165 //
1166 //#69 rln 01.03.99 S4135 bm2_sd_t4-A.stp entity 30
1167 //#78 rln 12.03.99 S4135
1168 if (mySurf->IsVClosed(myPreci) || mySurf->Surface()->IsKind (STANDARD_TYPE (Geom_SphericalSurface))) {
1169 // Premier point dans le domain [vf, vl]
1170 Standard_Real prevY, firstY = pnt2d (1).Y();
02fd709b 1171 if (!isFromCashe) {
1172 // do not shift 2dcurve, if it connects to previous
1173 while (firstY < vf) { firstY += Vp; pnt2d (1).SetY(firstY); }
1174 while (firstY > vl) { firstY -= Vp; pnt2d (1).SetY(firstY); }
1175 }
1176 // shift first point, according to cashe
1177 if (mySurf->Surface()->IsVPeriodic() && isFromCashe) {
1178 Standard_Real aMinParam = vf, aMaxParam = vl;
1179 while (aMinParam > aSavedPoint.Y()) {
1180 aMinParam -= Vp;
1181 aMaxParam -= Vp;
1182 }
1183 while (aMaxParam < aSavedPoint.Y()) {
1184 aMinParam += Vp;
1185 aMaxParam += Vp;
1186 }
1187 Standard_Real aShift = ShapeAnalysis::AdjustToPeriod(firstY, aMinParam, aMaxParam);
1188 firstY += aShift;
1189 pnt2d(1).SetY(firstY);
1190 }
7fd59977 1191 prevY = firstY;
1192
1193 //:97 abv 1 Feb 98: treat case when curve is whole out of surface bounds
1194 Standard_Real minY = firstY, maxY = firstY;
1195
1196 // On decalle toujours le suivant
1197 for (i = 2; i <= nbrPnt; i ++) {
1198 // dist2d = pnt2d (i-1).Distance(pnt2d (i));
1199 Standard_Real CurY = pnt2d (i).Y();
1200 dist2d = Abs (CurY - prevY);
1201 if (dist2d > ( Vp / 2) ) {
1202 if (CurY > prevY + Vp/2) {
1203 while (CurY > prevY + Vp/2) { CurY -= Vp; pnt2d (i).SetY (CurY); }
1204 } else if (CurY < prevY - Vp/2) {
1205 while (CurY < prevY - Vp/2) { CurY += Vp; pnt2d (i).SetY (CurY); }
1206 }
1207 }
1208 prevY = CurY;
1209 if ( minY > CurY ) minY = CurY; //:97
1210 else if ( maxY < CurY ) maxY = CurY; //:97
1211 }
1212
1213 //:97
02fd709b 1214 if (!isFromCashe) {
1215 // do not shift 2dcurve, if it connects to previous
1216 Standard_Real midY = 0.5 * ( minY + maxY );
1217 Standard_Real shiftY=0.;
1218 if ( midY > vl ) shiftY = -Vp;
1219 else if ( midY < vf ) shiftY = Vp;
1220 if ( shiftY != 0. )
1221 for ( i=1; i <= nbrPnt; i++ ) pnt2d(i).SetY ( pnt2d(i).Y() + shiftY );
1222 }
7fd59977 1223 }
1224
1225 //#69 rln 01.03.99 S4135 bm2_sd_t4-A.stp entity 30
1226 //#78 rln 12.03.99 S4135
1227 if (mySurf->IsVClosed(myPreci) || mySurf->Surface()->IsKind (STANDARD_TYPE (Geom_SphericalSurface))) {
1228 for (i = 2; i <= nbrPnt; i++) {
1229 //#1 rln 11/02/98 ca_exhaust.stp entity #9869 dist2d = pnt2d (i-1).Distance(pnt2d (i));
1230 dist2d = Abs (pnt2d(i).Y() - pnt2d(i - 1).Y());
1231 if (dist2d > ( Vp / 2) ) {
1232 // ATTENTION : il faut regarder ou le decalage se fait.
1233 // si plusieurs points sont decalles, il faut plusieurs passes
1234 // pour obtenir un resultat correct.
1235 // NOT YET IMPLEMENTED
1236
1237 // one of those point is incorrectly placed
1238 // i.e on the wrong side of the "seam"
1239 // on prend le point le plus pres des bords vf ou vl
1240 Standard_Boolean prevOnFirst = Standard_False;
1241 Standard_Boolean prevOnLast = Standard_False;
1242 Standard_Boolean currOnFirst = Standard_False;
1243 Standard_Boolean currOnLast = Standard_False;
1244
1245 // .X ? plutot .Y , non ?
1246 Standard_Real distPrevVF = Abs(pnt2d (i-1).Y() - vf);
1247 Standard_Real distPrevVL = Abs(pnt2d (i-1).Y() - vl);
1248 Standard_Real distCurrVF = Abs(pnt2d (i).Y() - vf);
1249 Standard_Real distCurrVL = Abs(pnt2d (i).Y() - vl);
1250
1251 Standard_Real theMin = distPrevVF;
1252 prevOnFirst = Standard_True;
1253 if (distPrevVL < theMin) {
1254 theMin = distPrevVL;
1255 prevOnFirst = Standard_False;
1256 prevOnLast = Standard_True;
1257 }
1258 if (distCurrVF < theMin) {
1259 theMin = distCurrVF;
1260 prevOnFirst = Standard_False;
1261 prevOnLast = Standard_False;
1262 currOnFirst = Standard_True;
1263 }
1264 if (distCurrVL < theMin) {
1265 theMin = distCurrVL;
1266 prevOnFirst = Standard_False;
1267 prevOnLast = Standard_False;
1268 currOnFirst = Standard_False;
1269 currOnLast = Standard_True;
1270 }
1271 // Modifs RLN/Nijni 3-DEC-1997
1272 if (prevOnFirst) {
1273 // on decalle le point (i-1) en V Last
1274 gp_Pnt2d newPrev(pnt2d (i-1).X(), vf); // instead of vl RLN/Nijni
1275 pnt2d (i-1) = newPrev;
1276 }
1277 else if (prevOnLast) {
1278 // on decalle le point (i-1) en V first
1279 gp_Pnt2d newPrev(pnt2d (i-1).X(), vl); // instead of vf RLN/Nijni
1280 pnt2d (i-1) = newPrev;
1281 }
1282 else if (currOnFirst) {
1283 // on decalle le point (i) en V Last
1284 gp_Pnt2d newCurr(pnt2d (i).X(),vf); // instead of vl RLN/Nijni
1285 pnt2d (i) = newCurr;
1286 }
1287 else if (currOnLast) {
1288 // on decalle le point (i) en V First
1289 gp_Pnt2d newCurr(pnt2d (i).X(), vl); // instead of vf RLN/Nijni
1290 pnt2d (i) = newCurr;
1291 }
1292 // on verifie
0797d9d3 1293#ifdef OCCT_DEBUG
7fd59977 1294 dist2d = pnt2d (i-1).Distance(pnt2d (i));
1295 if (dist2d > ( Vp / 2) ) {
1296 cout << "Echec dans le recadrage" << endl;
1297 }
1298#endif
1299 }
1300 }
1301 }
1302
1303 //:c0 abv 20 Feb 98: treat very special case when 3d curve
1304 // go over the pole of, e.g., sphere, and partly lies along seam.
1305 // 2d representation of such a curve should consist of 3 parts - one on
1306 // regular part of surface (interior), one part along degenerated boundary
1307 // and one along seam.
1308 // Since it cannot be adjusted later by arranging pcurves (curve is single),
1309 // to fix it it is nesessary to have a possibility of adjusting seam
1310 // part of such curve either to left or right boundary of surface.
1311 // Test is performed only if flag AdjustOverDegen is not -1.
1312 // If AdjustOverDegen is True, seam part of curve is adjusted to
1313 // the left, and if False - to the right parametric boundary
1314 // If treated case is detected, flag DONE4 is set to status
1315 // NOTE: currently, precision is Precision::PConfusion() since it
1316 // is enough on encountered example
1317 // (ug_turbine-A.stp from ProSTEP Benchmark #3, entities ##2470 & 5680)
1318 // (r1001_ac.stp from Test Rally #10, face #35027 and others)
1319 if ( myAdjustOverDegen != -1 ) {
1320 if ( mySurf->IsUClosed(myPreci) ) {//#78 rln 12.03.99 S4135
1321 mySurf->IsDegenerated ( gp_Pnt(0,0,0), myPreci ); // pour calculer les dgnr
1322 if ( mySurf->NbSingularities(myPreci) > 0 ) { //rln S4135
1323 // 1st, find gap point (degenerated pole)
1324 Standard_Real PrevX=0.;
1325 Standard_Integer OnBound=0, PrevOnBound=0;
1326 Standard_Integer ind; // svv #1
1327 Standard_Boolean start = Standard_True;
1328 for ( ind=1; ind <= nbrPnt; ind++ ) {
1329 Standard_Real CurX = pnt2d(ind).X();
1330 // abv 16 Mar 00: trj3_s1-ug.stp #697: ignore points in singularity
1331 if ( mySurf->IsDegenerated ( points(ind), Precision::Confusion() ) )
1332 continue;
1333 OnBound = ( Abs ( Abs ( CurX - 0.5 * ( ul + uf ) ) - Up/2 ) <=
1334 Precision::PConfusion() );
1335 if ( ! start && Abs ( Abs ( CurX - PrevX ) - Up/2 ) <= 0.01*Up )
1336 break;
1337 start = Standard_False;
1338 PrevX = CurX;
1339 PrevOnBound = OnBound;
1340 }
1341 // if found, adjust seam part
1342 if ( ind <= nbrPnt ) {
1343 PrevX = ( myAdjustOverDegen ? uf : ul );
1344 Standard_Real dU = Up/2 + Precision::PConfusion();
1345 if ( PrevOnBound ) {
1346 pnt2d(ind-1).SetX ( PrevX );
1347 for ( Standard_Integer j=ind-2; j >0; j-- ) {
1348 Standard_Real CurX = pnt2d(j).X();
1349 while ( CurX < PrevX - dU ) pnt2d(j).SetX ( CurX += Up );
1350 while ( CurX > PrevX + dU ) pnt2d(j).SetX ( CurX -= Up );
1351 }
1352 }
1353 else if ( OnBound ) {
1354 pnt2d(ind).SetX ( PrevX );
1355 for ( Standard_Integer j=ind+1; j <= nbrPnt; j++ ) {
1356 Standard_Real CurX = pnt2d(j).X();
1357 while ( CurX < PrevX - dU ) pnt2d(j).SetX ( CurX += Up );
1358 while ( CurX > PrevX + dU ) pnt2d(j).SetX ( CurX -= Up );
1359 }
1360 }
1361 myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_DONE4);
1362 }
1363 }
1364 }
1365 else if ( mySurf->IsVClosed(myPreci) ) {//#78 rln 12.03.99 S4135
1366 mySurf->IsDegenerated ( gp_Pnt(0,0,0), myPreci ); // pour calculer les dgnr
1367 if ( mySurf->NbSingularities(myPreci) > 0 ) { //rln S4135
1368 // 1st, find gap point (degenerated pole)
1369 Standard_Real PrevY=0.;
1370 Standard_Integer OnBound=0, PrevOnBound=0;
1371 Standard_Integer ind; // svv #1
1372 Standard_Boolean start = Standard_True;
1373 for ( ind=1; ind <= nbrPnt; ind++ ) {
1374 Standard_Real CurY = pnt2d(ind).Y();
1375 // abv 16 Mar 00: trj3_s1-ug.stp #697: ignore points in singularity
1376 if ( mySurf->IsDegenerated ( points(ind), Precision::Confusion() ) )
1377 continue;
1378 OnBound = ( Abs ( Abs ( CurY - 0.5 * ( vl + vf ) ) - Vp/2 ) <=
1379 Precision::PConfusion() );
1380 if ( ! start && Abs ( Abs ( CurY - PrevY ) - Vp/2 ) <= 0.01*Vp )
1381 break;
1382 start = Standard_False;
1383 PrevY = CurY;
1384 PrevOnBound = OnBound;
1385 }
1386 // if found, adjust seam part
1387 if ( ind <= nbrPnt ) {
1388 PrevY = ( myAdjustOverDegen ? vf : vl );
1389 Standard_Real dV = Vp/2 + Precision::PConfusion();
1390 if ( PrevOnBound ) {
1391 pnt2d(ind-1).SetY ( PrevY );
1392 for ( Standard_Integer j=ind-2; j >0; j-- ) {
1393 Standard_Real CurY = pnt2d(j).Y();
1394 while ( CurY < PrevY - dV ) pnt2d(j).SetY ( CurY += Vp );
1395 while ( CurY > PrevY + dV ) pnt2d(j).SetY ( CurY -= Vp );
1396 }
1397 }
1398 else if ( OnBound ) {
1399 pnt2d(ind).SetY ( PrevY );
1400 for ( Standard_Integer j=ind+1; j <= nbrPnt; j++ ) {
1401 Standard_Real CurY = pnt2d(j).Y();
1402 while ( CurY < PrevY - dV ) pnt2d(j).SetY ( CurY += Vp );
1403 while ( CurY > PrevY + dV ) pnt2d(j).SetY ( CurY -= Vp );
1404 }
1405 }
1406 myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_DONE4);
1407 }
1408 }
1409 }
1410 }
1411
1412 //:q9: fill cashe
1413 myNbCashe = 2;
1414 if(ChangeCycle) { // msv 10.08.04: avoid using of uninitialised field
1415 //if(myCashe3d[0].Distance(points(1))>Precision::Confusion() &&
1416 // myCashe3d[1].Distance(points(1))>Precision::Confusion()) {
1417 myCashe3d[0] = points(1);
1418 myCashe3d[1] = points(nbrPnt);
1419 myCashe2d[0] = pnt2d(1);
1420 myCashe2d[1] = pnt2d(nbrPnt);
1421 }
1422 else {
1423 myCashe3d[1] = points(1);
1424 myCashe3d[0] = points(nbrPnt);
1425 myCashe2d[1] = pnt2d(1);
1426 myCashe2d[0] = pnt2d(nbrPnt);
1427 }
7fd59977 1428 return isDone;
1429}
1430
1431//=======================================================================
1432//function : ApproximatePCurve
1433//purpose :
1434//=======================================================================
1435
1436Handle(Geom2d_Curve) ShapeConstruct_ProjectCurveOnSurface::ApproximatePCurve(const Standard_Integer /*nbrPnt*/,
1437 Handle(TColgp_HArray1OfPnt2d)& points2d,
1438 Handle(TColStd_HArray1OfReal)& params,
1439 const Handle(Geom_Curve)& /*orig*/) const
1440{
1441// Standard_Real resol = Min(mySurf->Adaptor3d()->VResolution(myPreci), mySurf->Adaptor3d()->UResolution(myPreci));
1442 Standard_Real theTolerance2d = myPreci; // (100*nbrPnt);//resol;
1443 Handle(Geom2d_Curve) C2d;
1444 try {
1445 OCC_CATCH_SIGNALS
1446 CheckPoints2d (points2d, params, theTolerance2d);
1447 Standard_Integer numberPnt = points2d->Length();
1448
1449 TColgp_Array1OfPnt points3d(1,numberPnt);
1450 gp_Pnt2d pnt2d;
1451 gp_Pnt pnt;
1452 Standard_Integer i; // svv #1
1453 for( i = 1; i <= numberPnt; i++) {
1454 pnt2d = points2d->Value(i);
1455 pnt.SetCoord(pnt2d.X(),pnt2d.Y(),0);
1456 points3d(i) = pnt;
1457 }
1458
1459 GeomAPI_PointsToBSpline appr(points3d, params->Array1(), 1, 10, GeomAbs_C1, theTolerance2d);
1460 Handle(Geom_BSplineCurve) crv3d = appr.Curve();
1461 Standard_Integer NbPoles = crv3d->NbPoles();
1462 TColgp_Array1OfPnt poles3d (1, NbPoles);
1463 TColgp_Array1OfPnt2d poles2d (1, NbPoles);
1464 crv3d->Poles(poles3d);
1465 for( i = 1; i <= NbPoles; i++) {
1466 pnt2d.SetCoord(poles3d(i).X(),poles3d(i).Y());
1467 poles2d(i) = pnt2d;
1468 }
1469 TColStd_Array1OfReal weights (1,NbPoles);
1470 TColStd_Array1OfInteger multiplicities (1,crv3d->NbKnots());
1471 TColStd_Array1OfReal knots(1,crv3d->NbKnots());
1472 crv3d->Knots(knots);
1473 crv3d->Weights(weights);
1474 crv3d->Multiplicities(multiplicities);
1475 C2d = new Geom2d_BSplineCurve ( poles2d, weights, knots, multiplicities, crv3d->Degree(), crv3d->IsPeriodic());
1476 return C2d;
1477 }
1478 catch(Standard_Failure) {
0797d9d3 1479#ifdef OCCT_DEBUG //:s5
7fd59977 1480 // debug ...
1481 Standard_Integer nbp = params->Length();
1482 Standard_Integer nb2 = points2d->Length();
1483 cout << "Warning: ShapeConstruct_ProjectCurveOnSurface::ApproximatePCurve(): Exception: ";
1484 Standard_Failure::Caught()->Print(cout);
1485 cout<<"Pb Geom2dAPI_Approximate, tol2d="<<theTolerance2d<<" NbParams="<<nbp<<" NbPnts="<<nb2<<endl;
1486// if (nb2 > nbp) nb2 = nbp;
1487// Standard_Real rbp,rb2; rbp = nbp; rb2 = nb2;
1488// // dbl.AddString ("NbP2d/NbParams puis X Y Param -> mini");
1489// dbl.AddReals (rb2,rbp);
1490// for (Standard_Integer i = 1; i <= nb2; i ++) {
1491// gp_XYZ quoi (points2d->Value(i).X(),points2d->Value(i).Y(),params->Value(i) );
1492// dbl.AddXYZ (quoi);
1493// }
1494#endif
1495 C2d.Nullify();
1496 }
1497 return C2d;
1498}
1499
1500//=======================================================================
1501//function : InterpolatePCurve
1502//purpose :
1503//=======================================================================
1504
1505 Handle(Geom2d_Curve) ShapeConstruct_ProjectCurveOnSurface::InterpolatePCurve(const Standard_Integer nbrPnt,
1506 Handle(TColgp_HArray1OfPnt2d)& points2d,
1507 Handle(TColStd_HArray1OfReal)& params,
1508 const Handle(Geom_Curve)& /*orig*/) const
1509{
1510 Handle(Geom2d_Curve) C2d; // NULL si echec
1511 Standard_Real theTolerance2d = myPreci / (100 * nbrPnt);
1512 try {
1513 OCC_CATCH_SIGNALS
1514 // on verifie d abord s il n y a pas de points confondus
1515 // si besoin on retouche les valeurs ...
1516 CheckPoints2d (points2d, params, theTolerance2d);
1517 Geom2dAPI_Interpolate myInterPol2d (points2d, params,
1518 Standard_False, theTolerance2d);
1519 myInterPol2d.Perform();
1520 if (myInterPol2d.IsDone()) C2d = myInterPol2d.Curve();
1521 }
1522 catch(Standard_Failure) {
0797d9d3 1523#ifdef OCCT_DEBUG //:s5
7fd59977 1524// // debug ...
1525 Standard_Integer nbp = params->Length();
1526 Standard_Integer nb2 = points2d->Length();
1527 cout << "Warning: ShapeConstruct_ProjectCurveOnSurface::InterpolatePCurve(): Exception: ";
1528 Standard_Failure::Caught()->Print(cout);
1529 cout<<"Pb Geom2dAPI_Interpolate, tol2d="<<theTolerance2d<<" NbParams="<<nbp<<" NbPnts="<<nb2<<endl;
1530// if (nb2 > nbp) nb2 = nbp;
1531// Standard_Real rbp,rb2; rbp = nbp; rb2 = nb2;
1532// // dbl.AddString ("NbP2d/NbParams puis X Y Param -> mini");
1533// dbl.AddReals (rb2,rbp);
1534// for (Standard_Integer i = 1; i <= nb2; i ++) {
1535// gp_XYZ quoi (points2d->Value(i).X(),points2d->Value(i).Y(),params->Value(i) );
1536// dbl.AddXYZ (quoi);
1537// }
1538#endif
1539 C2d.Nullify();
1540 }
1541 return C2d;
1542}
1543
1544//=======================================================================
1545//function : InterpolateCurve3d
1546//purpose :
1547//=======================================================================
1548
1549Handle(Geom_Curve) ShapeConstruct_ProjectCurveOnSurface::InterpolateCurve3d(const Standard_Integer,
1550 Handle(TColgp_HArray1OfPnt)& points,
1551 Handle(TColStd_HArray1OfReal)& params,
1552 const Handle(Geom_Curve)& /*orig*/) const
1553{
1554 Handle(Geom_Curve) C3d; // NULL si echec
1555 try {
1556 OCC_CATCH_SIGNALS
1557 Standard_Real Tol = myPreci;
1558 CheckPoints(points, params, Tol);
1559 GeomAPI_Interpolate myInterPol(points, params, Standard_False, Tol);
1560 myInterPol.Perform();
1561 if (myInterPol.IsDone()) C3d = myInterPol.Curve();
1562 }
1563 catch(Standard_Failure) {
1564 C3d.Nullify();
0797d9d3 1565#ifdef OCCT_DEBUG //:s5
7fd59977 1566 cout << "Warning: ShapeConstruct_ProjectCurveOnSurface::InterpolateCurve3d(): Exception: ";
1567 Standard_Failure::Caught()->Print(cout); cout << endl;
1568#endif
1569 }
1570 return C3d;
1571}
1572
1573//=======================================================================
1574//function : CheckPoints
1575//purpose :
1576//=======================================================================
1577
1578 void ShapeConstruct_ProjectCurveOnSurface::CheckPoints(Handle(TColgp_HArray1OfPnt)& points,Handle(TColStd_HArray1OfReal)& params,Standard_Real& preci) const
1579{
1580 Standard_Integer firstElem = points->Lower();
1581 Standard_Integer lastElem = points->Upper();
1582 Standard_Integer i;
1583 Standard_Integer nbPntDropped = 0;
1584 Standard_Integer lastValid = firstElem; // indice of last undropped point
1585
1586 // will store 0 when the point is to be removed, 1 otherwise
1587 TColStd_Array1OfInteger tmpParam(firstElem, lastElem);
1588 for (i = firstElem; i<=lastElem ; i++) tmpParam.SetValue(i,1);
7ae65f0d 1589 Standard_Real DistMin2 = RealLast();
7fd59977 1590 gp_Pnt Prev = points->Value (lastValid);
1591 gp_Pnt Curr;
1592 for (i = firstElem + 1; i <= lastElem ; i ++) {
1593 Curr = points->Value(i);
7ae65f0d 1594 Standard_Real CurDist2 = Prev.SquareDistance(Curr);
1595 if (CurDist2 < gp::Resolution()) { // test 0
7fd59977 1596 nbPntDropped ++;
1597 if ( i == lastElem ) tmpParam.SetValue(lastValid, 0); // last point kept
1598 else tmpParam.SetValue(i, 0); // current dropped, lastValid unchanged
1599 } else {
7ae65f0d 1600 if (CurDist2 < DistMin2)
1601 DistMin2 = CurDist2;
7fd59977 1602 // lastValid becomes the current (i.e. i)
1603 lastValid = i;
1604 Prev = Curr;
1605 }
1606 }
7ae65f0d 1607 if (DistMin2 < RealLast())
1608 preci = 0.9 * Sqrt (DistMin2); // preci est la distance min entre les points on la reduit un peu
1609 if (nbPntDropped == 0)
7fd59977 1610 return;
7ae65f0d 1611
0797d9d3 1612#ifdef OCCT_DEBUG
7fd59977 1613 cout << "Warning : removing 3d points for interpolation" << endl;
1614#endif
1615 // Build new HArrays
1616 Standard_Integer newLast = lastElem - nbPntDropped;
1617 if ((newLast - firstElem + 1) < 2) {
0797d9d3 1618#ifdef OCCT_DEBUG
7fd59977 1619 cout << "Too many degenerated points for 3D interpolation" << endl;
1620#endif
1621 return;
1622 }
1623 Handle(TColgp_HArray1OfPnt) newPnts =
1624 new TColgp_HArray1OfPnt(firstElem, newLast);
1625 Handle(TColStd_HArray1OfReal) newParams =
1626 new TColStd_HArray1OfReal(firstElem, newLast);
1627 Standard_Integer newCurr = 1;
1628 for (i = firstElem; i<= lastElem ; i++) {
1629 if (tmpParam.Value(i) == 1) {
1630 newPnts->SetValue(newCurr, points->Value(i));
1631 newParams->SetValue(newCurr, params->Value(i));
1632 newCurr ++;
1633 }
1634 }
1635 points = newPnts;
1636 params = newParams;
7fd59977 1637 // on la reduit un peu
1638}
1639
1640//=======================================================================
1641//function : CheckPoints2d
1642//purpose :
1643//=======================================================================
1644
1645 void ShapeConstruct_ProjectCurveOnSurface::CheckPoints2d(Handle(TColgp_HArray1OfPnt2d)& points,
1646 Handle(TColStd_HArray1OfReal)& params,
1647 Standard_Real& preci) const
1648{
1649 Standard_Integer firstElem = points->Lower();
1650 Standard_Integer lastElem = points->Upper();
1651 Standard_Integer i;
1652 Standard_Integer nbPntDropped = 0;
1653 Standard_Integer lastValid = firstElem; // indice of last undropped point
1654
1655 // will store 0 when the point is to be removed, 1 otherwise
1656 TColStd_Array1OfInteger tmpParam(firstElem, lastElem);
1657 for (i = firstElem; i<=lastElem ; i++) {
1658 tmpParam.SetValue(i,1);
1659 }
7ae65f0d 1660 Standard_Real DistMin2 = RealLast();
7fd59977 1661 gp_Pnt2d Prev = points->Value(lastValid);
1662 gp_Pnt2d Curr;
1663 for (i = firstElem + 1; i<=lastElem ; i++) {
1664 Curr = points->Value(i);
7ae65f0d 1665 Standard_Real CurDist2 = Prev.SquareDistance(Curr);
1666 if (CurDist2 < gp::Resolution()) { // test 0
7fd59977 1667 nbPntDropped ++;
1668 if ( i == lastElem ) tmpParam.SetValue(lastValid, 0); // last point kept
1669 else tmpParam.SetValue(i, 0); // current dropped, lastValid unchanged
1670 } else {
7ae65f0d 1671 if (CurDist2 < DistMin2)
1672 DistMin2 = CurDist2;
7fd59977 1673 // lastValid becomes the current (i.e. i)
1674 lastValid = i;
1675 Prev = Curr;
1676 }
1677 }
7ae65f0d 1678 if (DistMin2 < RealLast())
1679 preci = 0.9 * Sqrt (DistMin2);
1680 if (nbPntDropped == 0)
7fd59977 1681 return;
7ae65f0d 1682
0797d9d3 1683#ifdef OCCT_DEBUG
7fd59977 1684 cout << "Warning : removing 2d points for interpolation" << endl;
1685#endif
1686 // Build new HArrays
1687 Standard_Integer newLast = lastElem - nbPntDropped;
1688 if ((newLast - firstElem + 1) < 2) {
0797d9d3 1689#ifdef OCCT_DEBUG
7fd59977 1690 cout << "Too many degenerated points for 2D interpolation" << endl;
1691#endif
1692 //pdn 12.02.99 S4135 Creating pcurve with minimal length.
1693 tmpParam.SetValue(firstElem,1);
1694 tmpParam.SetValue(lastElem,1);
1695 gp_XY lastPnt = points->Value(lastElem).XY();
1696 lastPnt.Add(gp_XY(preci,preci));
1697 points->SetValue(lastElem,lastPnt);
1698 newLast = firstElem+1;
1699 //return;
1700 }
1701 Handle(TColgp_HArray1OfPnt2d) newPnts =
1702 new TColgp_HArray1OfPnt2d(firstElem, newLast);
1703 Handle(TColStd_HArray1OfReal) newParams =
1704 new TColStd_HArray1OfReal(firstElem, newLast);
1705 Standard_Integer newCurr = 1;
1706 for (i = firstElem; i <= lastElem ; i++) {
1707 if (tmpParam.Value(i) == 1) {
0797d9d3 1708#ifdef OCCT_DEBUG
7fd59977 1709 cout << "Point " << i << " : " << points->Value(i).X() << " " << points->Value(i).Y() << " at param " << params->Value(i) << endl;
1710#endif
1711 newPnts->SetValue(newCurr, points->Value(i));
1712 newParams->SetValue(newCurr, params->Value(i));
1713 newCurr ++;
1714 }
1715 else {
0797d9d3 1716#ifdef OCCT_DEBUG
7fd59977 1717 cout << "Removed " << i << " : " << points->Value(i).X() << " " << points->Value(i).Y() << " at param " << params->Value(i) << endl;
1718#endif
1719 }
1720 }
1721 points = newPnts;
1722 params = newParams;
7fd59977 1723}
1724
1725//=======================================================================
1726//function : IsAnIsoparametric
1727//purpose :
1728//=======================================================================
1729//:S4030: modified for optimization
1730//:p9 abv 11 Mar 99: PRO7226 #489490: find nearest boundary instead of first one
1731
1732 Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::IsAnIsoparametric(const Standard_Integer nbrPnt,
1733 const TColgp_Array1OfPnt& points,
1734 const TColStd_Array1OfReal& params,
1735 Standard_Boolean& isoTypeU,
1736 Standard_Boolean& p1OnIso,
1737 gp_Pnt2d& valueP1,
1738 Standard_Boolean& p2OnIso,
1739 gp_Pnt2d& valueP2,
1740 Standard_Boolean& isoPar2d3d,
1741 Handle(Geom_Curve)& cIso,
1742 Standard_Real& t1,
1743 Standard_Real& t2,
1744 TColStd_Array1OfReal& pout) const
1745{
1746 try { // RAJOUT
1747 OCC_CATCH_SIGNALS
1748
1749 Standard_Real prec = Precision::Confusion();//myPreci;
1750
1751 Standard_Boolean isoParam = Standard_False;
1752 isoPar2d3d = Standard_False;
1753
1754 Standard_Real U1, U2, V1, V2;
1755 mySurf->Bounds(U1, U2, V1, V2);
1756
1757 if ( mySurf->Surface()->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
1758 Handle(Geom_RectangularTrimmedSurface) sTrim =
1759 Handle(Geom_RectangularTrimmedSurface)::DownCast(mySurf->Surface());
1760 sTrim->Bounds(U1, U2, V1, V2);
1761 }
1762
1763 gp_Pnt pt;
1764 Standard_Integer mpt[2]; mpt[0] = mpt[1] = 0;
d20d815b 1765 Standard_Real t, tpar[2] = { 0.0, 0.0 }, isoValue=0.;
7fd59977 1766 Standard_Real mindist2;
1767 Standard_Real mind2[2];
1768 mindist2 = mind2[0] = mind2[1] = 4*prec*prec;
1769
1770 p1OnIso = Standard_False;
1771 p2OnIso = Standard_False;
1772 const Bnd_Box* aBox = 0;
1773
1774 for (Standard_Integer j=1; (j<=4) /*&& !isoParam*/; j++) {
1775 Standard_Real isoVal=0.;
1776 Standard_Boolean isoU=Standard_False; //szv#4:S4163:12Mar99 `isoU` must be Standard_Boolean
1777 Handle(Geom_Curve) cI;
1778 Standard_Real tt1, tt2;
1779
1780 if (j == 1 ) {
1781 if (Precision::IsInfinite(U1)) continue;
1782 cI = mySurf->UIso(U1);
1783 isoU = Standard_True;
1784 isoVal = U1;
1785 aBox = & mySurf->GetBoxUF();
1786 }
1787 else if (j == 2) {
1788 if (Precision::IsInfinite(U2)) continue;
1789 cI = mySurf->UIso(U2);
1790 isoU = Standard_True;
1791 isoVal = U2;
1792 aBox = & mySurf->GetBoxUL();
1793 }
1794 else if (j == 3) {
1795 if (Precision::IsInfinite(V1)) continue;
1796 cI = mySurf->VIso(V1);
1797 isoU = Standard_False;
1798 isoVal = V1;
1799 aBox = & mySurf->GetBoxVF();
1800 }
1801 else if (j == 4) {
1802 if (Precision::IsInfinite(V2)) continue;
1803 cI = mySurf->VIso(V2);
1804 isoU = Standard_False;
1805 isoVal = V2;
1806 aBox = & mySurf->GetBoxVL();
1807 }
1808 if(cI.IsNull())
1809 continue;
1810
1811 if (isoU) { tt1 = V1; tt2 = V2; }
1812 else { tt1 = U1; tt2 = U2; }
1813
1814 gp_Pnt ext1, ext2;
1815 cI->D0(tt1, ext1);
1816 cI->D0(tt2, ext2);
1817
1818// PATCH CKY 9-JUL-1998 : protection contre singularite
1819 gp_Pnt extmi;
1820 cI->D0( (tt1+tt2)/2,extmi);
1821 if (ext1.IsEqual(ext2,prec) && ext1.IsEqual(extmi,prec)) continue;
1822
1823 Standard_Boolean PtEQext1 = Standard_False;
1824 Standard_Boolean PtEQext2 = Standard_False;
1825
eb1ebea4 1826 Standard_Real currd2[2], tp[2] = {0, 0};
7fd59977 1827 Standard_Integer mp[2];
1828
1829 for (Standard_Integer i=0; i<2; i++) {
1830 mp[i] = 0;
1831 Standard_Integer k = (i == 0 ? 1 : nbrPnt);
1832
1833 // si ext1 == ext2 => valueP1 == valueP2 => vect null plus tard
1834 currd2[i] = points(k).SquareDistance ( ext1 );
1835 if ( currd2[i] <= prec*prec && !PtEQext1) {
1836 mp[i] = 1;
1837 tp[i] = tt1;
1838 PtEQext1 = Standard_True;
1839 continue;
1840 }
1841
1842 currd2[i] = points(k).SquareDistance ( ext2 );
1843 if ( currd2[i] <= prec*prec && !PtEQext2) {
1844 mp[i] = 2;
1845 tp[i] = tt2;
1846 PtEQext2 = Standard_True;
1847 continue;
1848 }
1849
1850 // On evite de projecter sur un iso degenere
1851 // on doit egalement le faire pour l apex du cone
1852 if (mySurf->Surface()->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) && !isoU) {
1853 continue;
1854 }
1855
1856 if(aBox->IsOut(points(k))) continue;
1857
1858 Standard_Real Cf = cI->FirstParameter();
1859 Standard_Real Cl = cI->LastParameter();
1860 if (Precision::IsInfinite(Cf)) Cf = -1000;
1861 if (Precision::IsInfinite(Cl)) Cl = +1000;
1862
1863 ShapeAnalysis_Curve sac;
1864 Standard_Real dist = sac.Project (cI,points(k),prec,pt,t,Cf,Cl);
1865 currd2[i] = dist * dist;
1866 if ((dist <= prec) && (t>= Cf) && (t<=Cl)) {
1867 mp[i] = 3;
1868 tp[i] = t;
1869 }
1870 }
1871
1872 //:e7 abv 21 Apr 98: ProSTEP TR8, r0501_pe #56679:
1873 // avoid possible null-length curves
1874 if ( mp[0] >0 && mp[1] >0 &&
1875 Abs ( tp[0] - tp[1] ) < Precision::PConfusion() ) continue;
1876
1877
1878 if (mp[0] > 0 &&
1879 ( ! p1OnIso || currd2[0] < mind2[0] ) ) {
1880 p1OnIso = Standard_True;
15b54261 1881 mind2[0] = currd2[0]; // LP2.stp #105899: FLT_INVALID_OPERATION on Windows 7 VC 9 Release mode on the whole file
7fd59977 1882 if (isoU) valueP1.SetCoord(isoVal, tp[0]);
1883 else valueP1.SetCoord(tp[0], isoVal);
1884 }
1885
1886 if (mp[1] > 0 &&
1887 ( ! p2OnIso || currd2[1] < mind2[1] ) ) {
1888 p2OnIso = Standard_True;
1889 mind2[1] = currd2[1];
1890 if (isoU) valueP2.SetCoord(isoVal, tp[1]);
1891 else valueP2.SetCoord(tp[1], isoVal);
1892 }
1893
1894 if ( mp[0] <=0 || mp[1] <=0 ) continue;
1895
1896 Standard_Real md2 = currd2[0] + currd2[1];
1897 if ( mindist2 <= md2 ) continue;
1898
1899 mindist2 = md2;
1900 mpt[0] = mp[0];
1901 mpt[1] = mp[1];
1902 tpar[0] = tp[0];
1903 tpar[1] = tp[1];
1904 isoTypeU = isoU;
1905 isoValue = isoVal;
1906 cIso = cI;
1907 t1 = tt1;
1908 t2 = tt2;
1909 }
1910
1911 // probablely it concerns an isoparametrics
1912 if ( mpt[0] >0 && mpt[1] >0 ) {
1913
1914 p1OnIso = p2OnIso = Standard_True;
1915 if (isoTypeU) {
1916 valueP1.SetCoord(isoValue, tpar[0]);
1917 valueP2.SetCoord(isoValue, tpar[1]);
1918 }
1919 else {
1920 valueP1.SetCoord(tpar[0], isoValue);
1921 valueP2.SetCoord(tpar[1], isoValue);
1922 }
1923
1924 if ( mpt[0] != 3 && mpt[1] != 3 ) {
1925 isoPar2d3d = Standard_True;
1926 for (Standard_Integer i=2; i < nbrPnt && isoPar2d3d; i++){
1927 if (tpar[1] > tpar[0]) t = params(i);
1928 else t = t1+t2-params(i);
1929 cIso->D0(t, pt);
1930 if (!points(i).IsEqual(pt, prec)) isoPar2d3d = Standard_False;
1931 }
1932 }
1933
1934 if (isoPar2d3d) isoParam = Standard_True;
1935 else {
1936 Standard_Real prevParam = tpar[0];
1937 Standard_Real Cf, Cl;
1938 Standard_Boolean isoByDistance = Standard_True;
1939 Cf = cIso->FirstParameter();
1940 Cl = cIso->LastParameter();
1941 if (Precision::IsInfinite(Cf)) Cf = -1000;
1942 if (Precision::IsInfinite(Cl)) Cl = +1000;
1943
1944 ShapeAnalysis_Curve sac;
1945 for (Standard_Integer i=2; i < nbrPnt && isoByDistance; i++) {
1946 Standard_Real dist = sac.NextProject (prevParam,cIso,points(i),
1947 prec,pt,t,Cf,Cl,
1948 Standard_False); //:j8 abv 10.12.98: TR10 r0501_db.stp #9423: avoid adjusting to ends
1949 prevParam = t;
1950 pout(i)=t;
1951 if( (dist > prec) || (t < Cf) || (t > Cl) )
1952 isoByDistance = Standard_False;
1953 }
1954 if (isoByDistance) isoParam = Standard_True;
1955 }
1956 }
1957/* if (!isoParam) { CKY 29-mai-1997 : garder tout ce qu on peut ?
1958 p1OnIso = Standard_False;
1959 p2OnIso = Standard_False;
1960 } */
1961 return isoParam;
1962 } // RAJOUT
1963 catch(Standard_Failure) {
1964// pb : on affiche ce qu on peut
0797d9d3 1965#ifdef OCCT_DEBUG
7fd59977 1966 for (Standard_Integer numpnt = 1; numpnt <= nbrPnt; numpnt ++) {
1967 cout<<"["<<numpnt<<"]param="<<params(numpnt)<<" point=("<<
1968 points(numpnt).X()<<" "<<points(numpnt).Y()<<" "<<points(numpnt).Z()<<")"<<endl;
1969 }
1970#endif
0797d9d3 1971#ifdef OCCT_DEBUG //:s5
7fd59977 1972 cout << "Warning: ShapeConstruct_ProjectCurveOnSurface::IsAnIsoparametric(): Exception: ";
1973 Standard_Failure::Caught()->Print(cout); cout << endl;
1974#endif
1975 return Standard_False;
1976 }
7fd59977 1977}
1978
1979/* S4135 : BestExtremum is commented after IsAnIsoparametric works with Precision::Confusion()
1980//=======================================================================
1981//function : BestExtremum
1982//purpose : auxiliaire prenant le meilleur extremum si ISO car doute possible
1983//=======================================================================
1984
1985 gp_Pnt2d ShapeConstruct_ProjectCurveOnSurface::BestExtremum(const gp_Pnt2d& P2iso,const gp_Pnt& P3ext,const gp_Pnt& P3next) const
1986{
1987// P2iso a ete calcule depuis P3ext sur une iso externe de la surface
1988// En principe bon mais circularite possible ... et IsU/VClosed faillible
1989// (si baillement 1e-4 ou 1e-5, on est dedans !). DONC
1990// 1/ on privilegie l iso mais a tout hasard on verifie si Surf meilleur
1991// 2/ si iso, attention a la circularite (cas limite)
1992
1993// NB : si isoParam, on suppose que P2iso est bon (car il y en a 2). A voir...
1994
1995// D abord, calcul p2ext depuis la surface. choix surface/iso
1996 return P2iso;
1997 Standard_Real prec = Precision::Confusion();//myPreci;
1998 gp_Pnt2d P2cal = mySurf->ValueOfUV(P3ext, prec);
1999 gp_Pnt P3cal = mySurf->Value (P2cal);
2000 Standard_Real dcal = P3ext.Distance (P3cal);
2001 Standard_Real dnxt = P3ext.Distance (P3next);
2002 if (dcal > dnxt) return P2iso; // en fait protection sur BUG (PRO8468)
2003
2004// On choisit entre P2iso et P2cal, le plus proche de P2next ... !!!
2005 gp_Pnt2d P2next = mySurf->ValueOfUV(P3next, prec);
2006 if (P2next.Distance(P2cal) < P2next.Distance(P2iso)) return P2cal;
2007 return P2iso;
2008}
2009*/
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