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0025706: SIGSEGV after making existing BSplineCurve rational
[occt.git] / src / Geom / Geom_BSplineSurface.cxx
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b311480e 1// Created on: 1993-03-09
2// Created by: JCV
3// Copyright (c) 1993-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
7fd59977 17// 14-Mar-96 : xab portage hp
18// pmn : 28-Jun-96 Distinction entre la continuite en U et V (bug PRO4625)
19// pmn : 07-Jan-97 Centralisation des verif rational (PRO6834)
20// et ajout des InvalideCache() dans les SetWeight*(PRO6833)
21// RBD : 15-10-98 ; Le cache est maintenant calcule sur [-1,1] (pro15537).
22// jct : 19-01-99 ; permutation de urational et vrational dans Rational.
7fd59977 23#define No_Standard_OutOfRange
24
25#include <Geom_BSplineSurface.ixx>
26
27#include <gp.hxx>
28#include <BSplCLib.hxx>
29#include <BSplSLib.hxx>
30
31#include <Standard_ConstructionError.hxx>
32#include <Standard_NotImplemented.hxx>
33#include <Standard_OutOfRange.hxx>
34#include <Precision.hxx>
35
36//=======================================================================
37//function : CheckSurfaceData
38//purpose : Internal use only.
39//=======================================================================
40
41static void CheckSurfaceData
42(const TColgp_Array2OfPnt& SPoles,
43 const TColStd_Array1OfReal& SUKnots,
44 const TColStd_Array1OfReal& SVKnots,
45 const TColStd_Array1OfInteger& SUMults,
46 const TColStd_Array1OfInteger& SVMults,
47 const Standard_Integer UDegree,
48 const Standard_Integer VDegree,
49 const Standard_Boolean UPeriodic,
50 const Standard_Boolean VPeriodic)
51{
52 if (UDegree < 1 || UDegree > Geom_BSplineSurface::MaxDegree () ||
53 VDegree < 1 || VDegree > Geom_BSplineSurface::MaxDegree ()) {
54 Standard_ConstructionError::Raise("Geom_BSplineSurface");
55 }
56 if (SPoles.ColLength () < 2 || SPoles.RowLength () < 2) {
57 Standard_ConstructionError::Raise("Geom_BSplineSurface");
58 }
59
60 if (SUKnots.Length() != SUMults.Length() ||
61 SVKnots.Length() != SVMults.Length()) {
62 Standard_ConstructionError::Raise("Geom_BSplineSurface");
63 }
64
65 Standard_Integer i;
66 for (i = SUKnots.Lower(); i < SUKnots.Upper(); i++) {
67 if (SUKnots(i+1) - SUKnots(i) <= Epsilon(Abs(SUKnots(i)))) {
68 Standard_ConstructionError::Raise("Geom_BSplineSurface");
69 }
70 }
71
72 for (i = SVKnots.Lower(); i < SVKnots.Upper(); i++) {
73 if (SVKnots(i+1) - SVKnots(i) <= Epsilon(Abs(SVKnots(i)))) {
74 Standard_ConstructionError::Raise("Geom_BSplineSurface");
75 }
76 }
77
78 if (SPoles.ColLength() != BSplCLib::NbPoles(UDegree,UPeriodic,SUMults))
79 Standard_ConstructionError::Raise("Geom_BSplineSurface");
80
81 if (SPoles.RowLength() != BSplCLib::NbPoles(VDegree,VPeriodic,SVMults))
82 Standard_ConstructionError::Raise("Geom_BSplineSurface");
83}
84
7fd59977 85//=======================================================================
86//function : Rational
87//purpose : Internal use only.
88//=======================================================================
89
90static void Rational(const TColStd_Array2OfReal& Weights,
91 Standard_Boolean& Urational,
92 Standard_Boolean& Vrational)
93{
94 Standard_Integer I,J;
95 J = Weights.LowerCol ();
96 Vrational = Standard_False;
97 while (!Vrational && J <= Weights.UpperCol()) {
98 I = Weights.LowerRow();
99 while (!Vrational && I <= Weights.UpperRow() - 1) {
100 Vrational = (Abs(Weights (I, J) - Weights (I+1, J))
101 > Epsilon (Abs(Weights (I, J))));
102 I++;
103 }
104 J++;
105 }
106
107 I = Weights.LowerRow ();
108 Urational = Standard_False;
109 while (!Urational && I <= Weights.UpperRow()) {
110 J = Weights.LowerCol();
111 while (!Urational && J <= Weights.UpperCol() - 1) {
112 Urational = (Abs(Weights (I, J) - Weights (I, J+1))
113 > Epsilon (Abs(Weights (I, J))));
114 J++;
115 }
116 I++;
117 }
118}
119
120//=======================================================================
121//function : Copy
122//purpose :
123//=======================================================================
124
125Handle(Geom_Geometry) Geom_BSplineSurface::Copy () const
126{
127 Handle(Geom_BSplineSurface) S;
128 if (urational || vrational)
129 S = new Geom_BSplineSurface (poles->Array2() , weights->Array2(),
130 uknots->Array1(), vknots->Array1(),
131 umults->Array1(), vmults->Array1(),
132 udeg , vdeg,
133 uperiodic, vperiodic);
134 else
135 S = new Geom_BSplineSurface (poles->Array2(),
136 uknots->Array1(), vknots->Array1(),
137 umults->Array1(), vmults->Array1(),
138 udeg , vdeg,
139 uperiodic, vperiodic);
140 return S;
141}
142
143//=======================================================================
144//function : Geom_BSplineSurface
145//purpose :
146//=======================================================================
147
148Geom_BSplineSurface::Geom_BSplineSurface
149(const TColgp_Array2OfPnt& Poles,
150 const TColStd_Array1OfReal& UKnots,
151 const TColStd_Array1OfReal& VKnots,
152 const TColStd_Array1OfInteger& UMults,
153 const TColStd_Array1OfInteger& VMults,
154 const Standard_Integer UDegree,
155 const Standard_Integer VDegree,
156 const Standard_Boolean UPeriodic,
157 const Standard_Boolean VPeriodic
158 ) :
159 urational(Standard_False),
160 vrational(Standard_False),
161 uperiodic(UPeriodic),
162 vperiodic(VPeriodic),
163 udeg(UDegree),
164 vdeg(VDegree),
165 maxderivinvok(0)
166
167{
168 Standard_Integer MinDegree,
169 MaxDegree ;
170
171 // check
172
173 CheckSurfaceData(Poles,
174 UKnots , VKnots,
175 UMults , VMults,
176 UDegree , VDegree,
177 UPeriodic, VPeriodic);
178
179 // copy arrays
180
181 poles = new TColgp_HArray2OfPnt(1,Poles.ColLength(),
182 1,Poles.RowLength());
183 poles->ChangeArray2() = Poles;
184
185 weights = new TColStd_HArray2OfReal (1,Poles.ColLength(),
186 1,Poles.RowLength(), 1.0);
187
188 uknots = new TColStd_HArray1OfReal (1,UKnots.Length());
189 uknots->ChangeArray1() = UKnots;
190
191 umults = new TColStd_HArray1OfInteger (1,UMults.Length());
192 umults->ChangeArray1() = UMults;
193
194 vknots = new TColStd_HArray1OfReal (1,VKnots.Length());
195 vknots->ChangeArray1() = VKnots;
196
197 vmults = new TColStd_HArray1OfInteger (1,VMults.Length());
198 vmults->ChangeArray1() = VMults;
199 MinDegree = Min(udeg,vdeg) ;
200 MaxDegree = Max(udeg,vdeg) ;
201 cachepoles = new TColgp_HArray2OfPnt(1,MaxDegree + 1,
202 1,MinDegree + 1) ;
203
204 cacheweights.Nullify() ;
205 ucacheparameter = 0.0e0 ;
206 vcacheparameter = 0.0e0 ;
207 ucachespanlenght = 1.0e0 ;
208 vcachespanlenght = 1.0e0 ;
209 ucachespanindex = 0 ;
210 vcachespanindex = 0 ;
211 validcache = 0 ;
212
213 UpdateUKnots();
214 UpdateVKnots();
215}
216
217//=======================================================================
218//function : Geom_BSplineSurface
219//purpose :
220//=======================================================================
221
222Geom_BSplineSurface::Geom_BSplineSurface
223(const TColgp_Array2OfPnt& Poles,
224 const TColStd_Array2OfReal& Weights,
225 const TColStd_Array1OfReal& UKnots,
226 const TColStd_Array1OfReal& VKnots,
227 const TColStd_Array1OfInteger& UMults,
228 const TColStd_Array1OfInteger& VMults,
229 const Standard_Integer UDegree,
230 const Standard_Integer VDegree,
231 const Standard_Boolean UPeriodic,
232 const Standard_Boolean VPeriodic) :
233 urational(Standard_False),
234 vrational(Standard_False),
235 uperiodic(UPeriodic),
236 vperiodic(VPeriodic),
237 udeg(UDegree),
238 vdeg(VDegree),
239 maxderivinvok(0)
240{
241 Standard_Integer MinDegree,
242 MaxDegree ;
243 // check weights
244
245 if (Weights.ColLength() != Poles.ColLength())
246 Standard_ConstructionError::Raise("Geom_BSplineSurface");
247
248 if (Weights.RowLength() != Poles.RowLength())
249 Standard_ConstructionError::Raise("Geom_BSplineSurface");
250
251 Standard_Integer i,j;
252 for (i = Weights.LowerRow(); i <= Weights.UpperRow(); i++) {
253 for (j = Weights.LowerCol(); j <= Weights.UpperCol(); j++) {
254 if (Weights(i,j) <= gp::Resolution())
255 Standard_ConstructionError::Raise("Geom_BSplineSurface");
256 }
257 }
258
259 // check really rational
260
261 Rational(Weights, urational, vrational);
262
263 // check
264
265 CheckSurfaceData(Poles,
266 UKnots , VKnots,
267 UMults , VMults,
268 UDegree , VDegree,
269 UPeriodic, VPeriodic);
270
271 // copy arrays
272
273 poles = new TColgp_HArray2OfPnt(1,Poles.ColLength(),
274 1,Poles.RowLength());
275 poles->ChangeArray2() = Poles;
276
277 weights = new TColStd_HArray2OfReal (1,Poles.ColLength(),
278 1,Poles.RowLength());
279 weights->ChangeArray2() = Weights;
280
281 uknots = new TColStd_HArray1OfReal (1,UKnots.Length());
282 uknots->ChangeArray1() = UKnots;
283
284 umults = new TColStd_HArray1OfInteger (1,UMults.Length());
285 umults->ChangeArray1() = UMults;
286
287 vknots = new TColStd_HArray1OfReal (1,VKnots.Length());
288 vknots->ChangeArray1() = VKnots;
289
290 vmults = new TColStd_HArray1OfInteger (1,VMults.Length());
291 vmults->ChangeArray1() = VMults;
292 MinDegree = Min(udeg,vdeg) ;
293 MaxDegree = Max(udeg,vdeg) ;
294 cachepoles = new TColgp_HArray2OfPnt(1,MaxDegree + 1,
295 1,MinDegree + 1) ;
296 if (urational || vrational) {
297 cacheweights = new TColStd_HArray2OfReal (1,MaxDegree + 1,
298 1,MinDegree + 1);
299 }
300 ucacheparameter = 0.0e0 ;
301 vcacheparameter = 0.0e0 ;
302 ucachespanlenght = 1.0e0 ;
303 vcachespanlenght = 1.0e0 ;
304 ucachespanindex = 0 ;
305 vcachespanindex = 0 ;
306 validcache = 0 ;
307
308 UpdateUKnots();
309 UpdateVKnots();
310}
311
312//=======================================================================
313//function : ExchangeUV
314//purpose :
315//=======================================================================
316
317void Geom_BSplineSurface::ExchangeUV ()
318{
319 Standard_Integer LC = poles->LowerCol();
320 Standard_Integer UC = poles->UpperCol();
321 Standard_Integer LR = poles->LowerRow();
322 Standard_Integer UR = poles->UpperRow();
323
324 Handle(TColgp_HArray2OfPnt) npoles =
325 new TColgp_HArray2OfPnt (LC, UC, LR, UR);
326 Handle(TColStd_HArray2OfReal) nweights =
327 new TColStd_HArray2OfReal (LC, UC, LR, UR);
328
329 const TColgp_Array2OfPnt & spoles = poles->Array2();
330 const TColStd_Array2OfReal & sweights = weights->Array2();
331
332 TColgp_Array2OfPnt& snpoles = npoles->ChangeArray2();
333 TColStd_Array2OfReal& snweights = nweights->ChangeArray2();
334
335 Standard_Integer i, j;
336 for (i = LC; i <= UC; i++) {
337 for (j = LR; j <= UR; j++) {
338 snpoles (i,j) = spoles (j,i);
339 snweights (i,j) = sweights (j,i);
340 }
341 }
342
343 poles = npoles;
344 weights = nweights;
345
346 Standard_Boolean temp = urational;
347 urational = vrational;
348 vrational = temp;
349
350 temp = uperiodic;
351 uperiodic = vperiodic;
352 vperiodic = temp;
353
354 Standard_Integer tempdeg = udeg;
355 udeg = vdeg;
356 vdeg = tempdeg;
357
358
359 Handle(TColStd_HArray1OfReal) tempknots = uknots;
360 uknots = vknots;
361 vknots = tempknots;
362
363 Handle(TColStd_HArray1OfInteger) tempmults = umults;
364 umults = vmults;
365 vmults = tempmults;
366
367 UpdateUKnots();
368 UpdateVKnots();
369}
370
371//=======================================================================
372//function : IncreaseDegree
373//purpose :
374//=======================================================================
375
376void Geom_BSplineSurface::IncreaseDegree (const Standard_Integer UDegree,
377 const Standard_Integer VDegree)
378{
379 if (UDegree != udeg) {
380 if ( UDegree < udeg || UDegree > Geom_BSplineSurface::MaxDegree())
381 Standard_ConstructionError::Raise();
382
383 Standard_Integer FromK1 = FirstUKnotIndex();
384 Standard_Integer ToK2 = LastUKnotIndex();
385
386 Standard_Integer Step = UDegree - udeg;
387
388 Handle(TColgp_HArray2OfPnt) npoles = new
389 TColgp_HArray2OfPnt( 1, poles->ColLength() + Step * (ToK2 - FromK1),
390 1, poles->RowLength());
391
392 Standard_Integer nbknots = BSplCLib::IncreaseDegreeCountKnots
393 (udeg,UDegree,uperiodic,umults->Array1());
394
395 Handle(TColStd_HArray1OfReal) nknots =
396 new TColStd_HArray1OfReal(1,nbknots);
397
398 Handle(TColStd_HArray1OfInteger) nmults =
399 new TColStd_HArray1OfInteger(1,nbknots);
400
401 Handle(TColStd_HArray2OfReal) nweights
402 = new TColStd_HArray2OfReal(1,npoles->ColLength(),
403 1,npoles->RowLength(), 1.);
404
405 if (urational || vrational) {
406
407 BSplSLib::IncreaseDegree
408 (Standard_True, udeg, UDegree, uperiodic,
409 poles->Array2(),weights->Array2(),
410 uknots->Array1(),umults->Array1(),
411 npoles->ChangeArray2(),nweights->ChangeArray2(),
412 nknots->ChangeArray1(),nmults->ChangeArray1());
413 }
414 else {
415
416 BSplSLib::IncreaseDegree
417 (Standard_True, udeg, UDegree, uperiodic,
418 poles->Array2(),BSplSLib::NoWeights(),
419 uknots->Array1(),umults->Array1(),
420 npoles->ChangeArray2(),*((TColStd_Array2OfReal*) NULL),
421 nknots->ChangeArray1(),nmults->ChangeArray1());
422 }
423 udeg = UDegree;
424 poles = npoles;
425 weights = nweights;
426 uknots = nknots;
427 umults = nmults;
428 UpdateUKnots();
429 }
430
431 if (VDegree != vdeg) {
432 if ( VDegree < vdeg || VDegree > Geom_BSplineSurface::MaxDegree())
433 Standard_ConstructionError::Raise();
434
435 Standard_Integer FromK1 = FirstVKnotIndex();
436 Standard_Integer ToK2 = LastVKnotIndex();
437
438 Standard_Integer Step = VDegree - vdeg;
439
440 Handle(TColgp_HArray2OfPnt) npoles = new
441 TColgp_HArray2OfPnt( 1, poles->ColLength(),
442 1, poles->RowLength() + Step * (ToK2 - FromK1));
443
444 Standard_Integer nbknots = BSplCLib::IncreaseDegreeCountKnots
445 (vdeg,VDegree,vperiodic,vmults->Array1());
446
447 Handle(TColStd_HArray1OfReal) nknots =
448 new TColStd_HArray1OfReal(1,nbknots);
449
450 Handle(TColStd_HArray1OfInteger) nmults =
451 new TColStd_HArray1OfInteger(1,nbknots);
452
453 Handle(TColStd_HArray2OfReal) nweights
454 = new TColStd_HArray2OfReal(1,npoles->ColLength(),
455 1,npoles->RowLength(), 1.);
456
457 if (urational || vrational) {
458
459 BSplSLib::IncreaseDegree
460 (Standard_False, vdeg, VDegree, vperiodic,
461 poles->Array2(),weights->Array2(),
462 vknots->Array1(),vmults->Array1(),
463 npoles->ChangeArray2(),nweights->ChangeArray2(),
464 nknots->ChangeArray1(),nmults->ChangeArray1());
465 }
466 else {
467
468 BSplSLib::IncreaseDegree
469 (Standard_False, vdeg, VDegree, vperiodic,
470 poles->Array2(),BSplSLib::NoWeights(),
471 vknots->Array1(),vmults->Array1(),
472 npoles->ChangeArray2(),*((TColStd_Array2OfReal*) NULL),
473 nknots->ChangeArray1(),nmults->ChangeArray1());
474 }
475 vdeg = VDegree;
476 poles = npoles;
477 weights = nweights;
478 vknots = nknots;
479 vmults = nmults;
480 UpdateVKnots();
481 }
482}
483
484//=======================================================================
485//function : IncreaseUMultiplicity
486//purpose :
487//=======================================================================
488
489void Geom_BSplineSurface::IncreaseUMultiplicity
490(const Standard_Integer UIndex,
491 const Standard_Integer M)
492{
493 TColStd_Array1OfReal k(1,1);
494 k(1) = uknots->Value(UIndex);
495 TColStd_Array1OfInteger m(1,1);
496 m(1) = M - umults->Value(UIndex);
497 InsertUKnots(k,m,Epsilon(1.),Standard_True);
498}
499
500//=======================================================================
501//function : IncreaseUMultiplicity
502//purpose :
503//=======================================================================
504
505void Geom_BSplineSurface::IncreaseUMultiplicity
506(const Standard_Integer FromI1,
507 const Standard_Integer ToI2,
508 const Standard_Integer M)
509{
510 Handle(TColStd_HArray1OfReal) tk = uknots;
511 TColStd_Array1OfReal k((uknots->Array1())(FromI1),FromI1,ToI2);
512 TColStd_Array1OfInteger m(FromI1, ToI2);
513 for (Standard_Integer i = FromI1; i <= ToI2; i++)
514 m(i) = M - umults->Value(i);
515 InsertUKnots(k,m,Epsilon(1.),Standard_True);
516}
517
518//=======================================================================
519//function : IncreaseVMultiplicity
520//purpose :
521//=======================================================================
522
523void Geom_BSplineSurface::IncreaseVMultiplicity
524(const Standard_Integer VIndex,
525 const Standard_Integer M)
526{
527 TColStd_Array1OfReal k(1,1);
528 k(1) = vknots->Value(VIndex);
529 TColStd_Array1OfInteger m(1,1);
530 m(1) = M - vmults->Value(VIndex);
531 InsertVKnots(k,m,Epsilon(1.),Standard_True);
532}
533
534//=======================================================================
535//function : IncreaseVMultiplicity
536//purpose :
537//=======================================================================
538
539void Geom_BSplineSurface::IncreaseVMultiplicity
540(const Standard_Integer FromI1,
541 const Standard_Integer ToI2,
542 const Standard_Integer M)
543{
544 Handle(TColStd_HArray1OfReal) tk = vknots;
545 TColStd_Array1OfReal k((vknots->Array1())(FromI1),FromI1,ToI2);
546 TColStd_Array1OfInteger m(FromI1,ToI2);
547 for (Standard_Integer i = FromI1; i <= ToI2; i++)
548 m(i) = M - vmults->Value(i);
549 InsertVKnots(k,m,Epsilon(1.),Standard_True);
550}
551
552//=======================================================================
553//function : Segment
554//purpose :
555//=======================================================================
556
557void Geom_BSplineSurface::Segment(const Standard_Real U1,
558 const Standard_Real U2,
559 const Standard_Real V1,
560 const Standard_Real V2)
561{
562
563 Standard_DomainError_Raise_if ( (U2 < U1) || (V2 < V1),
564 "Geom_BSplineCurve::Segment");
565 Standard_Real deltaU = Max(Abs(U2),Abs(U1));
566 Standard_Real EpsU = Epsilon(deltaU);
567 deltaU = U2 - U1;
568
569 Standard_Real deltaV = Max(Abs(V2),Abs(V1));
570 Standard_Real EpsV = Epsilon(deltaV);
571 deltaV = V2 - V1;
572
573 Standard_Real NewU1, NewU2, NewV1, NewV2;
574 Standard_Real U,V;
575 Standard_Integer indexU, indexV;
576
577 // inserting the UKnots
578 TColStd_Array1OfReal UKnots(1,2);
579 TColStd_Array1OfInteger UMults(1,2);
580
581 indexU = 0;
582 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
583 U1,uperiodic,uknots->Lower(),uknots->Upper(),
584 indexU,NewU1);
585 indexU = 0;
586 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
587 U2,uperiodic,uknots->Lower(),uknots->Upper(),
588 indexU,NewU2);
589 UKnots( 1) = Min( NewU1, NewU2);
590 UKnots( 2) = Max( NewU1, NewU2);
591 UMults( 1) = UMults( 2) = udeg;
592 InsertUKnots( UKnots, UMults, EpsU);
593
594 // Inserting the VKnots
595 TColStd_Array1OfReal VKnots(1,2);
596 TColStd_Array1OfInteger VMults(1,2);
597
598 indexV = 0;
599 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
600 V1,vperiodic,vknots->Lower(),vknots->Upper(),
601 indexV,NewV1);
602 indexV = 0;
603 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
604 V2,vperiodic,vknots->Lower(),vknots->Upper(),
605 indexV,NewV2);
606 VKnots( 1) = Min( NewV1, NewV2);
607 VKnots( 2) = Max( NewV1, NewV2);
608 VMults( 1) = VMults( 2) = vdeg;
609 InsertVKnots( VKnots, VMults, EpsV);
610
611
612 if (uperiodic) { // set the origine at NewU1
613 Standard_Integer index = 0;
614 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
615 U1,uperiodic,uknots->Lower(),uknots->Upper(),
616 index,U);
617 if ( Abs(uknots->Value(index+1)-U) <= EpsU)
618 index++;
619 SetUOrigin(index);
620 SetUNotPeriodic();
621 }
622
623 // compute index1 and index2 to set the new knots and mults
624 Standard_Integer index1U = 0, index2U = 0;
625 Standard_Integer FromU1 = uknots->Lower();
626 Standard_Integer ToU2 = uknots->Upper();
627 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
628 NewU1,uperiodic,FromU1,ToU2,index1U,U);
629 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
630 NewU1 + deltaU,uperiodic,FromU1,ToU2,index2U,U);
631 if ( Abs(uknots->Value(index2U+1)-U) <= EpsU)
632 index2U++;
633
634 Standard_Integer nbuknots = index2U - index1U + 1;
635
636 Handle(TColStd_HArray1OfReal)
637 nuknots = new TColStd_HArray1OfReal(1,nbuknots);
638 Handle(TColStd_HArray1OfInteger)
639 numults = new TColStd_HArray1OfInteger(1,nbuknots);
640
641 Standard_Integer i , k = 1;
642 for ( i = index1U; i<= index2U; i++) {
643 nuknots->SetValue(k, uknots->Value(i));
644 numults->SetValue(k, umults->Value(i));
645 k++;
646 }
647 numults->SetValue( 1, udeg + 1);
648 numults->SetValue(nbuknots, udeg + 1);
649
650
651 if (vperiodic) { // set the origine at NewV1
652 Standard_Integer index = 0;
653 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
654 V1,vperiodic,vknots->Lower(),vknots->Upper(),
655 index,V);
656 if ( Abs(vknots->Value(index+1)-V) <= EpsV)
657 index++;
658 SetVOrigin(index);
659 SetVNotPeriodic();
660 }
661
662 // compute index1 and index2 to set the new knots and mults
663 Standard_Integer index1V = 0, index2V = 0;
664 Standard_Integer FromV1 = vknots->Lower();
665 Standard_Integer ToV2 = vknots->Upper();
666 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
667 NewV1,vperiodic,FromV1,ToV2,index1V,V);
668 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
669 NewV1 + deltaV,vperiodic,FromV1,ToV2,index2V,V);
670 if ( Abs(vknots->Value(index2V+1)-V) <= EpsV)
671 index2V++;
672
673 Standard_Integer nbvknots = index2V - index1V + 1;
674
675 Handle(TColStd_HArray1OfReal)
676 nvknots = new TColStd_HArray1OfReal(1,nbvknots);
677 Handle(TColStd_HArray1OfInteger)
678 nvmults = new TColStd_HArray1OfInteger(1,nbvknots);
679
680 k = 1;
681 for ( i = index1V; i<= index2V; i++) {
682 nvknots->SetValue(k, vknots->Value(i));
683 nvmults->SetValue(k, vmults->Value(i));
684 k++;
685 }
686 nvmults->SetValue( 1, vdeg + 1);
687 nvmults->SetValue(nbvknots, vdeg + 1);
688
689
690 // compute index1 and index2 to set the new poles and weights
691 Standard_Integer pindex1U
692 = BSplCLib::PoleIndex(udeg,index1U,uperiodic,umults->Array1());
693 Standard_Integer pindex2U
694 = BSplCLib::PoleIndex(udeg,index2U,uperiodic,umults->Array1());
695
696 pindex1U++;
697 pindex2U = Min( pindex2U+1, poles->ColLength());
698
699 Standard_Integer nbupoles = pindex2U - pindex1U + 1;
700
701 // compute index1 and index2 to set the new poles and weights
702 Standard_Integer pindex1V
703 = BSplCLib::PoleIndex(vdeg,index1V,vperiodic,vmults->Array1());
704 Standard_Integer pindex2V
705 = BSplCLib::PoleIndex(vdeg,index2V,vperiodic,vmults->Array1());
706
707 pindex1V++;
708 pindex2V = Min( pindex2V+1, poles->RowLength());
709
710 Standard_Integer nbvpoles = pindex2V - pindex1V + 1;
711
712
713 Handle(TColStd_HArray2OfReal) nweights;
714
715 Handle(TColgp_HArray2OfPnt)
716 npoles = new TColgp_HArray2OfPnt(1,nbupoles,1,nbvpoles);
717
718 k = 1;
719 Standard_Integer j, l;
720 if ( urational || vrational) {
721 nweights = new TColStd_HArray2OfReal( 1,nbupoles,1,nbvpoles);
722 for ( i = pindex1U; i <= pindex2U; i++) {
723 l = 1;
724 for ( j = pindex1V; j <= pindex2V; j++) {
725 npoles->SetValue(k,l, poles->Value(i,j));
726 nweights->SetValue(k,l, weights->Value(i,j));
727 l++;
728 }
729 k++;
730 }
731 }
732 else {
733 for ( i = pindex1U; i <= pindex2U; i++) {
734 l = 1;
735 for ( j = pindex1V; j <= pindex2V; j++) {
736 npoles->SetValue(k,l, poles->Value(i,j));
737 l++;
738 }
739 k++;
740 }
741 }
742
743 uknots = nuknots;
744 umults = numults;
745 vknots = nvknots;
746 vmults = nvmults;
747 poles = npoles;
748 if ( urational || vrational)
749 weights = nweights;
750 else
751 weights = new TColStd_HArray2OfReal (1,poles->ColLength(),
752 1,poles->RowLength(), 1.0);
753
754 maxderivinvok = 0;
755 UpdateUKnots();
756 UpdateVKnots();
757
758}
759
760//=======================================================================
761//function : CheckAndSegment
762//purpose :
763//=======================================================================
764
765void Geom_BSplineSurface::CheckAndSegment(const Standard_Real U1,
766 const Standard_Real U2,
767 const Standard_Real V1,
768 const Standard_Real V2)
769{
770
771 Standard_DomainError_Raise_if ( (U2 < U1) || (V2 < V1),
772 "Geom_BSplineCurve::Segment");
773 Standard_Real deltaU = Max(Abs(U2),Abs(U1));
774 Standard_Real EpsU = Epsilon(deltaU);
775 deltaU = U2 - U1;
776
777 Standard_Real deltaV = Max(Abs(V2),Abs(V1));
778 Standard_Real EpsV = Epsilon(deltaV);
779 deltaV = V2 - V1;
780
781 Standard_Real NewU1, NewU2, NewV1, NewV2;
782 Standard_Real U,V;
783 Standard_Integer indexU, indexV;
784
785 Standard_Boolean segment_in_U = Standard_True;
786 Standard_Boolean segment_in_V = Standard_True;
787 segment_in_U = ( Abs(U1 - uknots->Value(uknots->Lower())) > EpsU )
788 || ( Abs(U2 - uknots->Value(uknots->Upper())) > EpsU );
789 segment_in_V = ( Abs(V1 - vknots->Value(vknots->Lower())) > EpsV )
790 || ( Abs(V2 - vknots->Value(vknots->Upper())) > EpsV );
791
792 indexU = 0;
793 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
794 U1,uperiodic,uknots->Lower(),uknots->Upper(),
795 indexU,NewU1);
796 indexU = 0;
797 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
798 U2,uperiodic,uknots->Lower(),uknots->Upper(),
799 indexU,NewU2);
800 if (segment_in_U) {
801 // inserting the UKnots
802 TColStd_Array1OfReal UKnots(1,2);
803 TColStd_Array1OfInteger UMults(1,2);
804 UKnots( 1) = Min( NewU1, NewU2);
805 UKnots( 2) = Max( NewU1, NewU2);
806 UMults( 1) = UMults( 2) = udeg;
807
808 InsertUKnots( UKnots, UMults, EpsU);
809 }
810
811 indexV = 0;
812 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
813 V1,vperiodic,vknots->Lower(),vknots->Upper(),
814 indexV,NewV1);
815 indexV = 0;
816 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
817 V2,vperiodic,vknots->Lower(),vknots->Upper(),
818 indexV,NewV2);
819 if (segment_in_V) {
820 // Inserting the VKnots
821 TColStd_Array1OfReal VKnots(1,2);
822 TColStd_Array1OfInteger VMults(1,2);
823
824 VKnots( 1) = Min( NewV1, NewV2);
825 VKnots( 2) = Max( NewV1, NewV2);
826 VMults( 1) = VMults( 2) = vdeg;
827 InsertVKnots( VKnots, VMults, EpsV);
828 }
829
830 if (uperiodic && segment_in_U) { // set the origine at NewU1
831 Standard_Integer index = 0;
832 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
833 U1,uperiodic,uknots->Lower(),uknots->Upper(),
834 index,U);
835 if ( Abs(uknots->Value(index+1)-U) <= EpsU)
836 index++;
837 SetUOrigin(index);
838 SetUNotPeriodic();
839 }
840
841 // compute index1 and index2 to set the new knots and mults
842 Standard_Integer index1U = 0, index2U = 0;
843 Standard_Integer FromU1 = uknots->Lower();
844 Standard_Integer ToU2 = uknots->Upper();
845 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
846 NewU1,uperiodic,FromU1,ToU2,index1U,U);
847 BSplCLib::LocateParameter(udeg,uknots->Array1(),umults->Array1(),
848 NewU1 + deltaU,uperiodic,FromU1,ToU2,index2U,U);
849 if ( Abs(uknots->Value(index2U+1)-U) <= EpsU)
850 index2U++;
851
852 Standard_Integer nbuknots = index2U - index1U + 1;
853
854 Handle(TColStd_HArray1OfReal)
855 nuknots = new TColStd_HArray1OfReal(1,nbuknots);
856 Handle(TColStd_HArray1OfInteger)
857 numults = new TColStd_HArray1OfInteger(1,nbuknots);
858
859 Standard_Integer i , k = 1;
860 for ( i = index1U; i<= index2U; i++) {
861 nuknots->SetValue(k, uknots->Value(i));
862 numults->SetValue(k, umults->Value(i));
863 k++;
864 }
865 if (segment_in_U) {
866 numults->SetValue( 1, udeg + 1);
867 numults->SetValue(nbuknots, udeg + 1);
868 }
869
870 if (vperiodic&& segment_in_V) { // set the origine at NewV1
871 Standard_Integer index = 0;
872 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
873 V1,vperiodic,vknots->Lower(),vknots->Upper(),
874 index,V);
875 if ( Abs(vknots->Value(index+1)-V) <= EpsV)
876 index++;
877 SetVOrigin(index);
878 SetVNotPeriodic();
879 }
880
881 // compute index1 and index2 to set the new knots and mults
882 Standard_Integer index1V = 0, index2V = 0;
883 Standard_Integer FromV1 = vknots->Lower();
884 Standard_Integer ToV2 = vknots->Upper();
885 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
886 NewV1,vperiodic,FromV1,ToV2,index1V,V);
887 BSplCLib::LocateParameter(vdeg,vknots->Array1(),vmults->Array1(),
888 NewV1 + deltaV,vperiodic,FromV1,ToV2,index2V,V);
889 if ( Abs(vknots->Value(index2V+1)-V) <= EpsV)
890 index2V++;
891
892 Standard_Integer nbvknots = index2V - index1V + 1;
893
894 Handle(TColStd_HArray1OfReal)
895 nvknots = new TColStd_HArray1OfReal(1,nbvknots);
896 Handle(TColStd_HArray1OfInteger)
897 nvmults = new TColStd_HArray1OfInteger(1,nbvknots);
898
899 k = 1;
900 for ( i = index1V; i<= index2V; i++) {
901 nvknots->SetValue(k, vknots->Value(i));
902 nvmults->SetValue(k, vmults->Value(i));
903 k++;
904 }
905 if (segment_in_V) {
906 nvmults->SetValue( 1, vdeg + 1);
907 nvmults->SetValue(nbvknots, vdeg + 1);
908 }
909
910 // compute index1 and index2 to set the new poles and weights
911 Standard_Integer pindex1U
912 = BSplCLib::PoleIndex(udeg,index1U,uperiodic,umults->Array1());
913 Standard_Integer pindex2U
914 = BSplCLib::PoleIndex(udeg,index2U,uperiodic,umults->Array1());
915
916 pindex1U++;
917 pindex2U = Min( pindex2U+1, poles->ColLength());
918
919 Standard_Integer nbupoles = pindex2U - pindex1U + 1;
920
921 // compute index1 and index2 to set the new poles and weights
922 Standard_Integer pindex1V
923 = BSplCLib::PoleIndex(vdeg,index1V,vperiodic,vmults->Array1());
924 Standard_Integer pindex2V
925 = BSplCLib::PoleIndex(vdeg,index2V,vperiodic,vmults->Array1());
926
927 pindex1V++;
928 pindex2V = Min( pindex2V+1, poles->RowLength());
929
930 Standard_Integer nbvpoles = pindex2V - pindex1V + 1;
931
932
933 Handle(TColStd_HArray2OfReal) nweights;
934
935 Handle(TColgp_HArray2OfPnt)
936 npoles = new TColgp_HArray2OfPnt(1,nbupoles,1,nbvpoles);
937
938 k = 1;
939 Standard_Integer j, l;
940 if ( urational || vrational) {
941 nweights = new TColStd_HArray2OfReal( 1,nbupoles,1,nbvpoles);
942 for ( i = pindex1U; i <= pindex2U; i++) {
943 l = 1;
944 for ( j = pindex1V; j <= pindex2V; j++) {
945 npoles->SetValue(k,l, poles->Value(i,j));
946 nweights->SetValue(k,l, weights->Value(i,j));
947 l++;
948 }
949 k++;
950 }
951 }
952 else {
953 for ( i = pindex1U; i <= pindex2U; i++) {
954 l = 1;
955 for ( j = pindex1V; j <= pindex2V; j++) {
956 npoles->SetValue(k,l, poles->Value(i,j));
957 l++;
958 }
959 k++;
960 }
961 }
962
963 uknots = nuknots;
964 umults = numults;
965 vknots = nvknots;
966 vmults = nvmults;
967 poles = npoles;
968 if ( urational || vrational)
969 weights = nweights;
970 else
971 weights = new TColStd_HArray2OfReal (1,poles->ColLength(),
972 1,poles->RowLength(), 1.0);
973
974 maxderivinvok = 0;
975 UpdateUKnots();
976 UpdateVKnots();
977
978}
979
980//=======================================================================
981//function : SetUKnot
982//purpose :
983//=======================================================================
984
985void Geom_BSplineSurface::SetUKnot
986(const Standard_Integer UIndex,
987 const Standard_Real K )
988{
989 if (UIndex < 1 || UIndex > uknots->Length()) Standard_OutOfRange::Raise();
990
991 Standard_Integer NewIndex = UIndex;
992 Standard_Real DU = Abs(Epsilon (K));
993 if (UIndex == 1) {
994 if (K >= uknots->Value (2) - DU) Standard_ConstructionError::Raise();
995 }
996 else if (UIndex == uknots->Length()) {
997 if (K <= uknots->Value (uknots->Length()-1) + DU) {
998 Standard_ConstructionError::Raise();
999 }
1000 }
1001 else {
1002 if (K <= uknots->Value (NewIndex-1) + DU ||
1003 K >= uknots->Value (NewIndex+1) - DU ) {
1004 Standard_ConstructionError::Raise();
1005 }
1006 }
1007
1008 if (K != uknots->Value (NewIndex)) {
1009 uknots->SetValue (NewIndex, K);
1010 maxderivinvok = 0;
1011 UpdateUKnots();
1012 }
1013}
1014
1015//=======================================================================
1016//function : SetUKnots
1017//purpose :
1018//=======================================================================
1019
1020void Geom_BSplineSurface::SetUKnots (const TColStd_Array1OfReal& UK) {
1021
1022 Standard_Integer Lower = UK.Lower();
1023 Standard_Integer Upper = UK.Upper();
1024 if (Lower < 1 || Lower > uknots->Length() ||
1025 Upper < 1 || Upper > uknots->Length() ) {
1026 Standard_OutOfRange::Raise();
1027 }
7fd59977 1028 if (Lower > 1) {
7fd59977 1029 if (Abs (UK (Lower) - uknots->Value (Lower-1)) <= gp::Resolution()) {
1030 Standard_ConstructionError::Raise();
1031 }
1032 }
1033 if (Upper < uknots->Length ()) {
7fd59977 1034 if (Abs (UK (Upper) - uknots->Value (Upper+1)) <= gp::Resolution()) {
1035 Standard_ConstructionError::Raise();
1036 }
1037 }
1038 Standard_Real K1 = UK (Lower);
1039 for (Standard_Integer i = Lower; i <= Upper; i++) {
1040 uknots->SetValue (i, UK(i));
1041 if (i != Lower) {
7fd59977 1042 if (Abs (UK(i) - K1) <= gp::Resolution()) {
1043 Standard_ConstructionError::Raise();
1044 }
1045 K1 = UK (i);
1046 }
1047 }
1048
1049 maxderivinvok = 0;
1050 UpdateUKnots();
1051}
1052
1053//=======================================================================
1054//function : SetUKnot
1055//purpose :
1056//=======================================================================
1057
1058void Geom_BSplineSurface::SetUKnot
1059(const Standard_Integer UIndex,
1060 const Standard_Real K,
1061 const Standard_Integer M)
1062{
1063 IncreaseUMultiplicity (UIndex, M);
1064 SetUKnot (UIndex, K);
1065}
1066
1067//=======================================================================
1068//function : SetVKnot
1069//purpose :
1070//=======================================================================
1071
1072void Geom_BSplineSurface::SetVKnot
1073(const Standard_Integer VIndex,
1074 const Standard_Real K)
1075{
1076 if (VIndex < 1 || VIndex > vknots->Length()) Standard_OutOfRange::Raise();
1077 Standard_Integer NewIndex = VIndex + vknots->Lower() - 1;
1078 Standard_Real DV = Abs(Epsilon (K));
1079 if (VIndex == 1) {
1080 if (K >= vknots->Value (2) - DV) {
1081 Standard_ConstructionError::Raise();
1082 }
1083 }
1084 else if (VIndex == vknots->Length()) {
1085 if (K <= vknots->Value (vknots->Length()-1) + DV) {
1086 Standard_ConstructionError::Raise();
1087 }
1088 }
1089 else {
1090 if (K <= vknots->Value (NewIndex-1) + DV ||
1091 K >= vknots->Value (NewIndex+1) - DV ) {
1092 Standard_ConstructionError::Raise();
1093 }
1094 }
1095
1096 maxderivinvok = 0;
1097 UpdateVKnots();
1098}
1099
1100//=======================================================================
1101//function : SetVKnots
1102//purpose :
1103//=======================================================================
1104
1105void Geom_BSplineSurface::SetVKnots (const TColStd_Array1OfReal& VK) {
1106
1107 Standard_Integer Lower = VK.Lower();
1108 Standard_Integer Upper = VK.Upper();
1109 if (Lower < 1 || Lower > vknots->Length() ||
1110 Upper < 1 || Upper > vknots->Length() ) {
1111 Standard_OutOfRange::Raise();
1112 }
7fd59977 1113 if (Lower > 1) {
7fd59977 1114 if (Abs (VK (Lower) - vknots->Value (Lower-1)) <= gp::Resolution()) {
1115 Standard_ConstructionError::Raise();
1116 }
1117 }
1118 if (Upper < vknots->Length ()) {
7fd59977 1119 if (Abs (VK (Upper) - vknots->Value (Upper+1)) <= gp::Resolution()) {
1120 Standard_ConstructionError::Raise();
1121 }
1122 }
1123 Standard_Real K1 = VK (Lower);
1124 for (Standard_Integer i = Lower; i <= Upper; i++) {
1125 vknots->SetValue (i, VK(i));
1126 if (i != Lower) {
7fd59977 1127 if (Abs (VK(i) - K1) <= gp::Resolution()) {
1128 Standard_ConstructionError::Raise();
1129 }
1130 K1 = VK (i);
1131 }
1132 }
1133
1134 maxderivinvok = 0;
1135 UpdateVKnots();
1136}
1137
1138//=======================================================================
1139//function : SetVKnot
1140//purpose :
1141//=======================================================================
1142
1143void Geom_BSplineSurface::SetVKnot
1144(const Standard_Integer VIndex,
1145 const Standard_Real K,
1146 const Standard_Integer M)
1147{
1148 IncreaseVMultiplicity (VIndex, M);
1149 SetVKnot (VIndex, K);
1150}
1151
1152//=======================================================================
1153//function : InsertUKnot
1154//purpose :
1155//=======================================================================
1156
1157void Geom_BSplineSurface::InsertUKnot
1158(const Standard_Real U,
1159 const Standard_Integer M,
1160 const Standard_Real ParametricTolerance,
1161 const Standard_Boolean Add)
1162{
1163 TColStd_Array1OfReal k(1,1);
1164 k(1) = U;
1165 TColStd_Array1OfInteger m(1,1);
1166 m(1) = M;
1167 InsertUKnots(k,m,ParametricTolerance,Add);
1168}
1169
1170//=======================================================================
1171//function : InsertVKnot
1172//purpose :
1173//=======================================================================
1174
1175void Geom_BSplineSurface::InsertVKnot
1176(const Standard_Real V,
1177 const Standard_Integer M,
1178 const Standard_Real ParametricTolerance,
1179 const Standard_Boolean Add)
1180{
1181 TColStd_Array1OfReal k(1,1);
1182 k(1) = V;
1183 TColStd_Array1OfInteger m(1,1);
1184 m(1) = M;
1185 InsertVKnots(k,m,ParametricTolerance,Add);
1186}
1187
1188//=======================================================================
1189//function : IncrementUMultiplicity
1190//purpose :
1191//=======================================================================
1192
1193void Geom_BSplineSurface::IncrementUMultiplicity
1194(const Standard_Integer FromI1,
1195 const Standard_Integer ToI2,
1196 const Standard_Integer Step)
1197{
1198 Handle(TColStd_HArray1OfReal) tk = uknots;
1199 TColStd_Array1OfReal k( (uknots->Array1())(FromI1), FromI1, ToI2);
1200 TColStd_Array1OfInteger m( FromI1, ToI2) ;
1201 m.Init(Step);
1202 InsertUKnots( k, m, Epsilon(1.));
1203}
1204
1205//=======================================================================
1206//function : IncrementVMultiplicity
1207//purpose :
1208//=======================================================================
1209
1210void Geom_BSplineSurface::IncrementVMultiplicity
1211(const Standard_Integer FromI1,
1212 const Standard_Integer ToI2,
1213 const Standard_Integer Step)
1214{
1215 Handle(TColStd_HArray1OfReal) tk = vknots;
1216 TColStd_Array1OfReal k( (vknots->Array1())(FromI1), FromI1, ToI2);
1217
1218 TColStd_Array1OfInteger m( FromI1, ToI2) ;
1219 m.Init(Step);
1220
1221 InsertVKnots( k, m, Epsilon(1.));
1222}
1223
1224//=======================================================================
1225//function : UpdateUKnots
1226//purpose :
1227//=======================================================================
1228
1229void Geom_BSplineSurface::UpdateUKnots()
1230{
1231
1232 Standard_Integer MaxKnotMult = 0;
06be28a4 1233 BSplCLib::KnotAnalysis (udeg, uperiodic,
7fd59977 1234 uknots->Array1(),
1235 umults->Array1(),
1236 uknotSet, MaxKnotMult);
1237
1238 if (uknotSet == GeomAbs_Uniform && !uperiodic) {
1239 ufknots = uknots;
1240 }
1241 else {
1242 ufknots = new TColStd_HArray1OfReal
1243 (1, BSplCLib::KnotSequenceLength(umults->Array1(),udeg,uperiodic));
1244
1245 BSplCLib::KnotSequence (uknots->Array1(),
1246 umults->Array1(),
1247 udeg,uperiodic,
1248 ufknots->ChangeArray1());
1249 }
1250
1251 if (MaxKnotMult == 0) Usmooth = GeomAbs_CN;
1252 else {
1253 switch (udeg - MaxKnotMult) {
1254 case 0 : Usmooth = GeomAbs_C0; break;
1255 case 1 : Usmooth = GeomAbs_C1; break;
1256 case 2 : Usmooth = GeomAbs_C2; break;
1257 case 3 : Usmooth = GeomAbs_C3; break;
1258 default : Usmooth = GeomAbs_C3; break;
1259 }
1260 }
1261
1262 InvalidateCache() ;
1263}
1264
1265//=======================================================================
1266//function : UpdateVKnots
1267//purpose :
1268//=======================================================================
1269
1270void Geom_BSplineSurface::UpdateVKnots()
1271{
1272 Standard_Integer MaxKnotMult = 0;
06be28a4 1273 BSplCLib::KnotAnalysis (vdeg, vperiodic,
7fd59977 1274 vknots->Array1(),
1275 vmults->Array1(),
1276 vknotSet, MaxKnotMult);
1277
1278 if (vknotSet == GeomAbs_Uniform && !vperiodic) {
1279 vfknots = vknots;
1280 }
1281 else {
1282 vfknots = new TColStd_HArray1OfReal
1283 (1, BSplCLib::KnotSequenceLength(vmults->Array1(),vdeg,vperiodic));
1284
1285 BSplCLib::KnotSequence (vknots->Array1(),
1286 vmults->Array1(),
1287 vdeg,vperiodic,
1288 vfknots->ChangeArray1());
1289 }
1290
1291 if (MaxKnotMult == 0) Vsmooth = GeomAbs_CN;
1292 else {
1293 switch (vdeg - MaxKnotMult) {
1294 case 0 : Vsmooth = GeomAbs_C0; break;
1295 case 1 : Vsmooth = GeomAbs_C1; break;
1296 case 2 : Vsmooth = GeomAbs_C2; break;
1297 case 3 : Vsmooth = GeomAbs_C3; break;
1298 default : Vsmooth = GeomAbs_C3; break;
1299 }
1300 }
1301 InvalidateCache() ;
1302}
1303
1304//=======================================================================
1305//function : InvalidateCache
1306//purpose : Invalidates the Cache of the surface
1307//=======================================================================
1308
1309void Geom_BSplineSurface::InvalidateCache()
1310{
1311 validcache = 0 ;
1312}
1313
1314//=======================================================================
1315//function : Normalizes the parameters if the curve is periodic
1316//purpose : that is compute the cache so that it is valid
1317//=======================================================================
1318
1319void Geom_BSplineSurface::PeriodicNormalization
1320(Standard_Real& Uparameter,
1321 Standard_Real& Vparameter) const
1322{
1323 Standard_Real Period, aMaxVal, aMinVal;
1324
1325 if (uperiodic) {
1326 aMaxVal = ufknots->Value(ufknots->Upper() - udeg);
1327 aMinVal = ufknots->Value (udeg + 1);
1328 Standard_Real eps = Abs(Epsilon(Uparameter));
1329 Period = aMaxVal - aMinVal;
1330
1331 if(Period <= eps)
1332 Standard_OutOfRange::Raise("Geom_BSplineSurface::PeriodicNormalization: Uparameter is too great number");
1333
9cbe6290 1334 Standard_Boolean isLess, isGreater;
1335 isLess = aMinVal - Uparameter > 0;
1336 isGreater = Uparameter - aMaxVal > 0;
1337 if (isLess || isGreater) {
1338 Standard_Real aDPar, aNbPer;
1339 aDPar = (isLess) ? (aMaxVal - Uparameter) : (aMinVal - Uparameter);
1340 modf(aDPar / Period, &aNbPer);
1341 Uparameter += aNbPer * Period;
7fd59977 1342 }
1343 }
1344 if (vperiodic) {
1345 aMaxVal = vfknots->Value(vfknots->Upper() - vdeg);
1346 aMinVal = vfknots->Value (vdeg + 1);
1347 Standard_Real eps = Abs(Epsilon(Vparameter));
1348 Period = aMaxVal - aMinVal;
1349
1350 if(Period <= eps)
1351 Standard_OutOfRange::Raise("Geom_BSplineSurface::PeriodicNormalization: Vparameter is too great number");
1352
9cbe6290 1353 Standard_Boolean isLess, isGreater;
1354 isLess = aMinVal - Vparameter > 0;
1355 isGreater = Vparameter - aMaxVal > 0;
1356 if (isLess || isGreater) {
1357 Standard_Real aDPar, aNbPer;
1358 aDPar = (isLess) ? (aMaxVal - Vparameter) : (aMinVal - Vparameter);
1359 modf(aDPar / Period, &aNbPer);
1360 Vparameter += aNbPer * Period;
7fd59977 1361 }
1362 }
1363}
1364
1365//=======================================================================
1366//function : ValidateCache
1367//purpose : function that validates the cache of the surface
1368//=======================================================================
1369
1370void Geom_BSplineSurface::ValidateCache(const Standard_Real Uparameter,
1371 const Standard_Real Vparameter)
1372{
1373 Standard_Real NewParameter ;
1374 Standard_Integer LocalIndex = 0 ;
1375 Standard_Integer MinDegree,
1376 MaxDegree ;
1377 //
1378 // check if the degree did not change
1379 //
1380
1381 MinDegree = Min(udeg,vdeg) ;
1382 MaxDegree = Max(udeg,vdeg) ;
1383 if (cachepoles->ColLength() < MaxDegree + 1 ||
1384 cachepoles->RowLength() < MinDegree + 1) {
1385 cachepoles = new TColgp_HArray2OfPnt(1,MaxDegree + 1,
1386 1,MinDegree + 1);
1387 }
1388 //
1389 // Verif + poussee pour les poids
1390 //
1391 if (urational || vrational) {
1392 if (cacheweights.IsNull()) {
1393 cacheweights = new TColStd_HArray2OfReal(1,MaxDegree + 1,
1394 1,MinDegree + 1);
1395 }
1396 else {
1397 if (cacheweights->ColLength() < MaxDegree + 1 ||
1398 cacheweights->RowLength() < MinDegree + 1) {
1399 cacheweights = new TColStd_HArray2OfReal(1,MaxDegree + 1,
1400 1,MinDegree + 1);
1401 }
1402 }
1403 }
52ba6031 1404 else if (!cacheweights.IsNull())
1405 cacheweights.Nullify();
7fd59977 1406
1407 BSplCLib::LocateParameter(udeg,
1408 (ufknots->Array1()),
1409 (BSplCLib::NoMults()),
1410 Uparameter,
1411 uperiodic,
1412 LocalIndex,
1413 NewParameter);
1414 ucachespanindex = LocalIndex ;
1415 if (Uparameter == ufknots->Value(LocalIndex + 1)) {
1416
1417 LocalIndex += 1 ;
1418 ucacheparameter = ufknots->Value(LocalIndex) ;
1419 if (LocalIndex == ufknots->Upper() - udeg) {
1420 //
1421 // for the last span if the parameter is outside of
1422 // the domain of the curve than use the last knot
1423 // and normalize with the last span Still set the
1424 // cachespanindex to flatknots->Upper() - deg so that
1425 // the IsCacheValid will know for sure we are extending
1426 // the Bspline
1427 //
1428
1429 ucachespanlenght = ufknots->Value(LocalIndex - 1) - ucacheparameter ;
1430 }
1431 else {
1432 ucachespanlenght = ufknots->Value(LocalIndex + 1) - ucacheparameter ;
1433 }
1434 }
1435 else {
1436 ucacheparameter = ufknots->Value(LocalIndex) ;
1437 ucachespanlenght = ufknots->Value(LocalIndex + 1) - ucacheparameter ;
1438 }
1439
1440 LocalIndex = 0 ;
1441 BSplCLib::LocateParameter(vdeg,
1442 (vfknots->Array1()),
1443 (BSplCLib::NoMults()),
1444 Vparameter,
1445 vperiodic,
1446 LocalIndex,
1447 NewParameter);
1448 vcachespanindex = LocalIndex ;
1449 if (Vparameter == vfknots->Value(LocalIndex + 1)) {
1450 LocalIndex += 1 ;
1451 vcacheparameter = vfknots->Value(LocalIndex) ;
1452 if (LocalIndex == vfknots->Upper() - vdeg) {
1453 //
1454 // for the last span if the parameter is outside of
1455 // the domain of the curve than use the last knot
1456 // and normalize with the last span Still set the
1457 // cachespanindex to flatknots->Upper() - deg so that
1458 // the IsCacheValid will know for sure we are extending
1459 // the Bspline
1460 //
1461
1462 vcachespanlenght = vfknots->Value(LocalIndex - 1) - vcacheparameter ;
1463 }
1464 else {
1465 vcachespanlenght = vfknots->Value(LocalIndex + 1) - vcacheparameter ;
1466 }
1467 }
1468 else {
1469 vcacheparameter = vfknots->Value(LocalIndex) ;
1470 vcachespanlenght = vfknots->Value(LocalIndex + 1) - vcacheparameter ;
1471 }
1472
1473 Standard_Real uparameter_11 = (2*ucacheparameter + ucachespanlenght)/2,
1474 uspanlenght_11 = ucachespanlenght/2,
1475 vparameter_11 = (2*vcacheparameter + vcachespanlenght)/2,
1476 vspanlenght_11 = vcachespanlenght/2 ;
1477 if (urational || vrational) {
1478 BSplSLib::BuildCache(uparameter_11,
1479 vparameter_11,
1480 uspanlenght_11,
1481 vspanlenght_11,
1482 uperiodic,
1483 vperiodic,
1484 udeg,
1485 vdeg,
1486 ucachespanindex,
1487 vcachespanindex,
1488 (ufknots->Array1()),
1489 (vfknots->Array1()),
1490 poles->Array2(),
1491 weights->Array2(),
1492 cachepoles->ChangeArray2(),
1493 cacheweights->ChangeArray2()) ;
1494 }
1495 else {
1496 BSplSLib::BuildCache(uparameter_11,
1497 vparameter_11,
1498 uspanlenght_11,
1499 vspanlenght_11,
1500 uperiodic,
1501 vperiodic,
1502 udeg,
1503 vdeg,
1504 ucachespanindex,
1505 vcachespanindex,
1506 (ufknots->Array1()),
1507 (vfknots->Array1()),
1508 poles->Array2(),
1509 *((TColStd_Array2OfReal*) NULL),
1510 cachepoles->ChangeArray2(),
1511 *((TColStd_Array2OfReal*) NULL)) ;
1512 }
1513 validcache = 1 ;
1514}
1515
1516//=======================================================================
1517//function : IsCacheValid
1518//purpose : function that checks for the validity of the cache of the
1519// surface
1520//=======================================================================
1521Standard_Boolean Geom_BSplineSurface::IsCacheValid
1522(const Standard_Real U,
1523 const Standard_Real V) const
1524{
1525 //Roman Lygin 26.12.08, see comments in Geom_BSplineCurve::IsCacheValid()
1526 Standard_Real aDeltaU = U - ucacheparameter;
1527 Standard_Real aDeltaV = V - vcacheparameter;
1528
1529 return ( validcache &&
1530 (aDeltaU >= 0.0e0) &&
1531 ((aDeltaU < ucachespanlenght) || (ucachespanindex == ufknots->Upper() - udeg)) &&
1532 (aDeltaV >= 0.0e0) &&
1533 ((aDeltaV < vcachespanlenght) || (vcachespanindex == vfknots->Upper() - vdeg)) );
1534}
1535
1536//=======================================================================
1537//function : SetWeight
1538//purpose :
1539//=======================================================================
1540
1541void Geom_BSplineSurface::SetWeight (const Standard_Integer UIndex,
1542 const Standard_Integer VIndex,
1543 const Standard_Real Weight)
1544{
1545 if (Weight <= gp::Resolution()) Standard_ConstructionError::Raise();
1546 TColStd_Array2OfReal & Weights = weights->ChangeArray2();
1547 if (UIndex < 1 || UIndex > Weights.ColLength() ||
1548 VIndex < 1 || VIndex > Weights.RowLength() ) {
1549 Standard_OutOfRange::Raise();
1550 }
1551 Weights (UIndex+Weights.LowerRow()-1, VIndex+Weights.LowerCol()-1) = Weight;
1552 Rational(Weights, urational, vrational);
1553 InvalidateCache();
1554}
1555
1556//=======================================================================
1557//function : SetWeightCol
1558//purpose :
1559//=======================================================================
1560
1561void Geom_BSplineSurface::SetWeightCol
1562(const Standard_Integer VIndex,
1563 const TColStd_Array1OfReal& CPoleWeights)
1564{
1565 TColStd_Array2OfReal & Weights = weights->ChangeArray2();
1566 if (VIndex < 1 || VIndex > Weights.RowLength()) {
1567 Standard_OutOfRange::Raise();
1568 }
1569 if (CPoleWeights.Lower() < 1 ||
1570 CPoleWeights.Lower() > Weights.ColLength() ||
1571 CPoleWeights.Upper() < 1 ||
1572 CPoleWeights.Upper() > Weights.ColLength() ) {
1573 Standard_ConstructionError::Raise();
1574 }
1575 Standard_Integer I = CPoleWeights.Lower();
1576 while (I <= CPoleWeights.Upper()) {
1577 if (CPoleWeights(I) <= gp::Resolution()) {
1578 Standard_ConstructionError::Raise();
1579 }
1580 Weights (I+Weights.LowerRow()-1, VIndex+Weights.LowerCol()-1) =
1581 CPoleWeights (I);
1582 I++;
1583 }
1584 // Verifie si c'est rationnel
1585 Rational(Weights, urational, vrational);
1586
1587 InvalidateCache();
1588}
1589
1590//=======================================================================
1591//function : SetWeightRow
1592//purpose :
1593//=======================================================================
1594
1595void Geom_BSplineSurface::SetWeightRow
1596(const Standard_Integer UIndex,
1597 const TColStd_Array1OfReal& CPoleWeights)
1598{
1599 TColStd_Array2OfReal & Weights = weights->ChangeArray2();
1600 if (UIndex < 1 || UIndex > Weights.ColLength()) {
1601 Standard_OutOfRange::Raise();
1602 }
1603 if (CPoleWeights.Lower() < 1 ||
1604 CPoleWeights.Lower() > Weights.RowLength() ||
1605 CPoleWeights.Upper() < 1 ||
1606 CPoleWeights.Upper() > Weights.RowLength() ) {
1607
1608 Standard_ConstructionError::Raise();
1609 }
1610 Standard_Integer I = CPoleWeights.Lower();
1611
1612 while (I <= CPoleWeights.Upper()) {
1613 if (CPoleWeights(I)<=gp::Resolution()) {
1614 Standard_ConstructionError::Raise();
1615 }
1616 Weights (UIndex+Weights.LowerRow()-1, I+Weights.LowerCol()-1) =
1617 CPoleWeights (I);
1618 I++;
1619 }
1620 // Verifie si c'est rationnel
1621 Rational(Weights, urational, vrational);
1622 InvalidateCache();
1623}
1624
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