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Integration of OCCT 6.5.0 from SVN
[occt.git] / src / IGESConvGeom / IGESConvGeom.cxx
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7fd59977 1// Copyright: Matra-Datavision 1994
2// File: IGESConvGeom.cxx
3// Created: Thu Sep 1 16:00:17 1994
4// Author: Christian CAILLET
5// <cky>
6// modif du 31/01/97 : mjm
7// on commence par les SplineCurves.
8// modif du 17/03/97 : mjm
9// SplineSurfaces.
10//%13 pdn 12.02.99: USA60293 avoid applying transformation twice
11
12#include <IGESConvGeom.ixx>
13
14#include <IGESData_ToolLocation.hxx>
15
16#include <BSplCLib.hxx>
17
18#include <BSplSLib.hxx>
19
20#include <gp_GTrsf.hxx>
21#include <gp_Trsf.hxx>
22#include <GeomConvert_CompCurveToBSplineCurve.hxx>
23#include <PLib.hxx>
24
25#include <TColgp_HArray1OfPnt.hxx>
26#include <TColgp_HArray2OfPnt.hxx>
27
28#include <TColStd_Array1OfInteger.hxx>
29#include <TColStd_Array1OfReal.hxx>
30#include <TColStd_HArray1OfReal.hxx>
31
32
33
34//=======================================================================
35//function : IGESConvGeom::SplineCurveFromIGES
36//purpose :
37//=======================================================================
38Standard_Integer IGESConvGeom::SplineCurveFromIGES
39 (const Handle(IGESGeom_SplineCurve)& st,
40 const Standard_Real /*epscoef*/, const Standard_Real epsgeom,
41 Handle(Geom_BSplineCurve)& res)
42{
43 Standard_Integer returned = 0;
44
45 // on recupere le degre
46 Standard_Integer degree = st->SplineType();
47 if (degree > 3) degree = 3;
48
49 // on recupere le nombre de segments.
50 Standard_Integer nbSegs = st->NbSegments();
51 if (nbSegs < 1) return 5; // FAIL : no segment
52
53 Standard_Integer nbKnots = nbSegs+1;
54
55 // Array of multiplicities.
56 TColStd_Array1OfInteger multi(1, nbKnots);
57 multi.Init(degree);
58 multi.SetValue(multi.Lower(), degree+1);
59 multi.SetValue(multi.Upper(), degree+1);
60
61 // Array of knots.
62 TColStd_Array1OfReal knots(1, nbKnots);
63 TColStd_Array1OfReal delta(1, nbSegs);
64 Standard_Integer i; // svv Jan 10 2000 : porting on DEC
65 for (i = 1; i<= nbKnots; i++)
66 knots.SetValue(i, st->BreakPoint(i));
67
68 for (i = 1; i <= nbSegs; i++)
69 delta.SetValue(i, st->BreakPoint(i+1) - st->BreakPoint(i));
70
71 TColgp_Array1OfPnt bspoles(1, nbSegs*degree+1);
72 Standard_Integer ibspole = bspoles.Lower()-1; // Bspole Index.
73 // il faut reparametrer avant de passer dans PLib.
74 // on est entre[0, T(i+1)-T(i)] et on veut [0,1]
75
76 for (i = 1; i <= nbSegs; i++) {
77 Standard_Real AX,BX,CX,DX,AY,BY,CY,DY,AZ,BZ,CZ,DZ;
78 st->XCoordPolynomial(i, AX, BX, CX, DX);
79 st->YCoordPolynomial(i, AY, BY, CY, DY);
80 st->ZCoordPolynomial(i, AZ, BZ, CZ, DZ);
81 if (st->NbDimensions() == 2 ) BZ=0.,CZ=0.,DZ=0.;
82 Standard_Real Di = delta(i);
83 Standard_Real Di2 = delta(i)*delta(i);
84 Standard_Real Di3 = delta(i)*delta(i)*delta(i);
85
86 TColgp_Array1OfPnt coeff(0, degree);
87 switch (degree) {
88 case 3 :
89 coeff.SetValue(coeff.Lower()+3, gp_Pnt(DX*Di3, DY*Di3, DZ*Di3));
90 case 2 :
91 coeff.SetValue(coeff.Lower()+2, gp_Pnt(CX*Di2, CY*Di2, CZ*Di2));
92 case 1 :
93 coeff.SetValue(coeff.Lower()+1, gp_Pnt(BX*Di, BY*Di, BZ*Di));
94 coeff.SetValue(coeff.Lower()+0, gp_Pnt(AX, AY, AZ));
95 break;
96 default:
97 break;
98 }
99
100
101 TColgp_Array1OfPnt bzpoles(0, degree);
102 PLib::CoefficientsPoles(coeff,PLib::NoWeights(),bzpoles,PLib::NoWeights());
103
104 // C0 test.
105 // Not to check the first pole of the first segment.
106 if (ibspole > bspoles.Lower()) {
107 Standard_Integer bzlow = bzpoles.Lower();
108 if (!(bspoles.Value(ibspole).IsEqual(bzpoles.Value(bzlow), epsgeom))) {
109 returned = 1;
110 // Medium point computing.
111 bspoles.SetValue (ibspole,
112 gp_Pnt((bspoles.Value(ibspole).X() + bzpoles.Value(bzlow).X())/2.,
113 (bspoles.Value(ibspole).Y() + bzpoles.Value(bzlow).Y())/2.,
114 (bspoles.Value(ibspole).Z() + bzpoles.Value(bzlow).Z())/2.));
115 }
116 }
117 if (i == 1) bspoles.SetValue(++ibspole, bzpoles.Value(bzpoles.Lower()));
118
119 for (Standard_Integer j = bzpoles.Lower()+1; j <= bzpoles.Upper(); j++)
120 bspoles.SetValue(++ibspole, bzpoles.Value(j));
121 }
122 if (ibspole != bspoles.Upper()) {
123 // Just to be sure.
124 return 3; // FAIL : Error during creation of control points
125 }
126
127 // Building result taking into account transformation if any :
128 // ===========================================================
129
130 //%13 pdn 12.02.99 USA60293
131// if (st->HasTransf()) {
132// gp_Trsf trsf;
133// Standard_Real epsilon = 1.E-04;
134// if (IGESData_ToolLocation::ConvertLocation
135// (epsilon,st->CompoundLocation(),trsf)) {
136// for (Standard_Integer i = bspoles.Lower(); i <= bspoles.Upper(); i++)
137// bspoles.SetValue(i, bspoles.Value(i).Transformed(trsf));
138// }
139// else
140// AddFail(st, "Transformation : not a similarity");
141// }
142 res = new Geom_BSplineCurve (bspoles, knots, multi, degree);
143// GeomConvert_CompCurveToBSplineCurve CompCurve =
144// GeomConvert_CompCurveToBSplineCurve(res);
145// res = CompCurve.BSplineCurve();
146 return returned;
147}
148
149
150
151//=======================================================================
152//function : IGESConvGeom::IncreaseCurveContinuity
153//purpose :
154//=======================================================================
155Standard_Integer IGESConvGeom::IncreaseCurveContinuity (const Handle(Geom_BSplineCurve)& res,
156 const Standard_Real epsgeom,
157 const Standard_Integer continuity)
158{
159 if (continuity < 1) return continuity;
160 Standard_Boolean isC1 = Standard_True, isC2 = Standard_True;
161 Standard_Integer degree = res->Degree();
162
163
164 Standard_Boolean isModified;
165 do {
166 isModified = Standard_False;
167 for (Standard_Integer i = res->FirstUKnotIndex()+1; i < res->LastUKnotIndex(); i++)
168 if(degree - res->Multiplicity(i) < continuity) {
169 if (continuity >= 2) {
170 if (!res->RemoveKnot(i, degree-2, epsgeom)) {
171 isC2 = Standard_False;
172 Standard_Boolean locOK = res->RemoveKnot(i, degree-1, epsgeom); // is C1 ?
173 isC1 &= locOK;
174 isModified |= locOK;
175 }
176 else
177 isModified = Standard_True;
178 }
179 else {
180 Standard_Boolean locOK = res->RemoveKnot(i, degree-1, epsgeom); // is C1 ?
181 isC1 &= locOK;
182 isModified |= locOK;
183 }
184 }
185 }
186 while (isModified);
187
188 if (!isC1) return 0;
189 if (continuity >= 2 && !isC2) return 1;
190 return continuity;
191}
192
193//=======================================================================
194//function : IncreaseCurveContinuity
195//purpose :
196//=======================================================================
197
198Standard_Integer IGESConvGeom::IncreaseCurveContinuity (const Handle(Geom2d_BSplineCurve)& res,
199 const Standard_Real epsgeom,
200 const Standard_Integer continuity)
201{
202 if (continuity < 1) return continuity;
203 Standard_Boolean isC1 = Standard_True, isC2 = Standard_True;
204 Standard_Integer degree = res->Degree();
205
206 Standard_Boolean isModified;
207 do {
208 isModified = Standard_False;
209 for (Standard_Integer i = res->FirstUKnotIndex()+1; i < res->LastUKnotIndex(); i++)
210 if(degree - res->Multiplicity(i) < continuity) {
211 if (continuity >= 2) {
212 if (!res->RemoveKnot(i, degree-2, epsgeom)) {
213 isC2 = Standard_False;
214 Standard_Boolean locOK = res->RemoveKnot(i, degree-1, epsgeom); // is C1 ?
215 isC1 &= locOK;
216 isModified |= locOK;
217 }
218 else
219 isModified = Standard_True;
220 }
221 else {
222 Standard_Boolean locOK = res->RemoveKnot(i, degree-1, epsgeom); // is C1 ?
223 isC1 &= locOK;
224 isModified |= locOK;
225 }
226 }
227 }
228 while (isModified);
229
230 if (!isC1) return 0;
231 if (continuity >= 2 && !isC2) return 1;
232 return continuity;
233}
234
235
236//=======================================================================
237//function : IGESConvGeom::SplineSurfaceFromIGES
238//purpose :
239//=======================================================================
240Standard_Integer IGESConvGeom::SplineSurfaceFromIGES
241 (const Handle(IGESGeom_SplineSurface)& st,
242 const Standard_Real /*epscoef*/, const Standard_Real epsgeom,
243 Handle(Geom_BSplineSurface)& res)
244{
245 Standard_Integer returned = 0;
246 Standard_Integer degree = st->BoundaryType();
247 if (degree > 3) degree = 3;
248 Standard_Integer DegreeU = degree;
249 Standard_Integer DegreeV = degree;
250
251 Standard_Integer NbUSeg = st->NbUSegments();
252 Standard_Integer NbVSeg = st->NbVSegments();
253
254 if ((NbUSeg < 1) || (NbVSeg < 1)) return 5;
255
256 // Output BSpline knots & multiplicities arraies for U & V :
257 // =========================================================
258
259 TColStd_Array1OfReal UKnot(1,NbUSeg+1);
260 TColStd_Array1OfReal VKnot(1,NbVSeg+1);
261 TColStd_Array1OfReal deltaU(1,NbUSeg);
262 TColStd_Array1OfReal deltaV(1,NbVSeg);
263
264 Standard_Integer i; // svv Jan 10 2000 : porting on DEC
265 for (i=1; i <= NbUSeg+1; i++)
266 UKnot.SetValue(i, st->UBreakPoint(i));
267
268 for (i=1; i <= NbUSeg; i++)
269 deltaU.SetValue(i, st->UBreakPoint(i+1)- st->UBreakPoint(i));
270
271 for (i=1; i <= NbVSeg+1; i++)
272 VKnot.SetValue(i, st->VBreakPoint(i));
273
274 for (i=1; i <= NbVSeg; i++)
275 deltaV.SetValue(i, st->VBreakPoint(i+1)- st->VBreakPoint(i));
276
277 TColStd_Array1OfInteger UMult(1,NbUSeg+1); UMult.Init(DegreeU);
278 UMult.SetValue(UMult.Lower(),DegreeU+1);
279 UMult.SetValue(UMult.Upper(),DegreeU+1);
280
281 TColStd_Array1OfInteger VMult(1,NbVSeg+1); VMult.Init(DegreeV);
282 VMult.SetValue(VMult.Lower(),DegreeV+1);
283 VMult.SetValue(VMult.Upper(),DegreeV+1);
284
285
286 // Poles computing
287 // ===============
288
289 Standard_Integer NbUPoles = NbUSeg * DegreeU + 1;
290 Standard_Integer NbVPoles = NbVSeg * DegreeV + 1;
291
292 TColgp_Array2OfPnt BsPole(1, NbUPoles, 1, NbVPoles);
293
294 Standard_Integer iBs, jBs, iBz, jBz;
295 Standard_Boolean wasC0 = Standard_True;
296
297 // Patch (1,1)
298 // ===========
299 Standard_Integer USeg, VSeg, j;
300 USeg = 1;
301 VSeg = 1;
302
303 Handle(TColStd_HArray1OfReal) XPoly = st->XPolynomial(USeg, VSeg);
304 Handle(TColStd_HArray1OfReal) YPoly = st->YPolynomial(USeg, VSeg);
305 Handle(TColStd_HArray1OfReal) ZPoly = st->ZPolynomial(USeg, VSeg);
306
307 TColgp_Array2OfPnt Coef(1, DegreeU+1, 1, DegreeV+1);
308 Standard_Real ParamU, ParamV;
309 ParamU = 1.;
310 for (i=1; i<=DegreeU+1; i++) {
311 ParamV = 1.;
312 for (j=1; j<=DegreeV+1; j++) {
313 Standard_Integer PolyIndex = i + 4*(j-1);
314 gp_Pnt aPoint(XPoly->Value(PolyIndex)*ParamU*ParamV,
315 YPoly->Value(PolyIndex)*ParamU*ParamV,
316 ZPoly->Value(PolyIndex)*ParamU*ParamV);
317 Coef.SetValue(i, j, aPoint);
318 ParamV = ParamV *deltaV(VSeg);
319 }
320 ParamU = ParamU * deltaU(USeg);
321 }
322 TColgp_Array2OfPnt BzPole(1, DegreeU+1, 1, DegreeV+1);
323 PLib::CoefficientsPoles(Coef,PLib::NoWeights2(),BzPole,PLib::NoWeights2());
324
325 iBs = BsPole.LowerRow();
326 jBs = BsPole.LowerCol();
327
328 // Making output BSpline poles array :
329 for (iBz=BzPole.LowerRow(); iBz<=BzPole.UpperRow(); iBz++) {
330 for (jBz=BzPole.LowerCol(); jBz<=BzPole.UpperCol(); jBz++)
331 BsPole.SetValue(iBs, jBs++, BzPole.Value(iBz,jBz));
332 jBs = BsPole.LowerCol();
333 iBs++;
334 }
335
336
337 // Patches (1<USeg<NbUSeg, 1)
338 // ==========================
339
340 VSeg = 1;
341 for (USeg=2; USeg<=NbUSeg; USeg++) {
342 XPoly = st->XPolynomial(USeg, VSeg);
343 YPoly = st->YPolynomial(USeg, VSeg);
344 ZPoly = st->ZPolynomial(USeg, VSeg);
345 Standard_Real ParamU, ParamV;
346 ParamU = 1.;
347 for (i=Coef.LowerRow(); i<=Coef.UpperRow(); i++) {
348 ParamV = 1.;
349 for (j=Coef.LowerCol(); j<=Coef.UpperCol(); j++) {
350 Standard_Integer PolyIndex = i + 4*(j-1);
351 gp_Pnt aPoint;
352 aPoint.SetCoord(XPoly->Value(PolyIndex)*ParamU*ParamV,
353 YPoly->Value(PolyIndex)*ParamU*ParamV,
354 ZPoly->Value(PolyIndex)*ParamU*ParamV);
355 Coef.SetValue(i, j, aPoint);
356 ParamV = ParamV *deltaV(VSeg);
357 }
358 ParamU = ParamU * deltaU(USeg);
359 }
360 PLib::CoefficientsPoles(Coef,PLib::NoWeights2(),BzPole,PLib::NoWeights2());
361
362 // C0 check and correction for poles lying on isoparametrics U=0 & V=0
363 Standard_Integer iBs = BsPole.LowerRow() + (USeg-1)*DegreeU;
364 Standard_Integer jBs = BsPole.LowerCol();
365 iBz = BzPole.LowerRow();
366 for (jBz=BzPole.LowerCol(); jBz<=BzPole.UpperCol(); jBz++) {
367 if (!BzPole.Value(iBz,jBz).IsEqual(BsPole.Value(iBs,jBs), epsgeom)) {
368 wasC0=Standard_False;
369 gp_Pnt MidPoint;
370 Standard_Real XCoord =
371 0.5 * (BzPole.Value(iBz,jBz).X() + BsPole.Value(iBs,jBs).X());
372 Standard_Real YCoord =
373 0.5 * (BzPole.Value(iBz,jBz).Y() + BsPole.Value(iBs,jBs).Y());
374 Standard_Real ZCoord =
375 0.5 * (BzPole.Value(iBz,jBz).Z() + BsPole.Value(iBs,jBs).Z());
376 MidPoint.SetCoord(XCoord, YCoord, ZCoord);
377 BsPole.SetValue(iBs, jBs++, MidPoint);
378 }
379 else {
380 BsPole.SetValue(iBs, jBs++, BzPole.Value(iBz,jBz));
381 }
382 }
383
384 // Other poles (no check about C0) :
385 iBs++;
386 jBs = BsPole.LowerCol();
387 for (iBz=BzPole.LowerRow()+1; iBz<=BzPole.UpperRow(); iBz++) {
388 for (jBz=BzPole.LowerCol(); jBz<=BzPole.UpperCol(); jBz++)
389 BsPole.SetValue(iBs, jBs++, BzPole.Value(iBz,jBz));
390 iBs++;
391 jBs = BsPole.LowerCol();
392 }
393 }
394
395
396
397 // Patches (1, 1<VSeg<NbVSeg)
398 // ==========================
399
400 USeg = 1;
401 for (VSeg=2; VSeg <= NbVSeg; VSeg++) {
402 XPoly = st->XPolynomial(USeg, VSeg);
403 YPoly = st->YPolynomial(USeg, VSeg);
404 ZPoly = st->ZPolynomial(USeg, VSeg);
405 Standard_Real ParamU, ParamV;
406 ParamU = 1.;
407 for (i=Coef.LowerRow(); i<=Coef.UpperRow(); i++) {
408 ParamV = 1.;
409 for (j=Coef.LowerCol(); j<=Coef.UpperCol(); j++) {
410 Standard_Integer PolyIndex = i + 4*(j-1);
411 gp_Pnt aPoint;
412 aPoint.SetCoord(XPoly->Value(PolyIndex)*ParamU*ParamV,
413 YPoly->Value(PolyIndex)*ParamU*ParamV,
414 ZPoly->Value(PolyIndex)*ParamU*ParamV);
415 Coef.SetValue(i, j, aPoint);
416 ParamV = ParamV *deltaV(VSeg);
417 }
418 ParamU = ParamU * deltaU(USeg);
419 }
420 PLib::CoefficientsPoles(Coef,PLib::NoWeights2(),BzPole,PLib::NoWeights2());
421
422 // C0 check and correction for poles lying on isoparametrics U=0 & V=0
423 iBs = BsPole.LowerRow();
424 jBs = BsPole.LowerCol() + (VSeg-1)*DegreeV;
425 jBz = BzPole.LowerCol();
426 for (iBz=BzPole.LowerRow(); iBz<=BzPole.UpperRow(); iBz++) {
427 if (!BzPole.Value(iBz,jBz).IsEqual(BsPole.Value(iBs,jBs), epsgeom)) {
428 wasC0=Standard_False;
429 gp_Pnt MidPoint;
430 Standard_Real XCoord = 0.5 *
431 (BzPole.Value(iBz,jBz).X() + BsPole.Value(iBs,jBs).X());
432 Standard_Real YCoord = 0.5 *
433 (BzPole.Value(iBz,jBz).Y() + BsPole.Value(iBs,jBs).Y());
434 Standard_Real ZCoord = 0.5 *
435 (BzPole.Value(iBz,jBz).Z() + BsPole.Value(iBs,jBs).Z());
436 MidPoint.SetCoord(XCoord, YCoord, ZCoord);
437 BsPole.SetValue(iBs++, jBs, MidPoint);
438 }
439 else{
440 BsPole.SetValue(iBs++, jBs, BzPole.Value(iBz,jBz));
441 }
442 }
443
444 jBs++;
445 iBs = BsPole.LowerRow();
446 for (jBz=BzPole.LowerCol()+1; jBz<=BzPole.UpperCol(); jBz++) {
447 for (iBz=BzPole.LowerRow(); iBz<=BzPole.UpperRow(); iBz++)
448 BsPole.SetValue(iBs++, jBs, BzPole.Value(iBz,jBz));
449 iBs = BsPole.LowerRow();
450 jBs++;
451 }
452 }
453
454
455 // Patches (1<USeg<NbUSeg, 1<VSeg<NbVSeg)
456 // ======================================
457
458 for (VSeg=2; VSeg <= NbVSeg; VSeg++) {
459 for (USeg=2; USeg <= NbUSeg; USeg++) {
460 XPoly = st->XPolynomial(USeg, VSeg);
461 YPoly = st->YPolynomial(USeg, VSeg);
462 ZPoly = st->ZPolynomial(USeg, VSeg);
463 Standard_Real ParamU, ParamV;
464 ParamU = 1.;
465 for (i=Coef.LowerRow(); i<=Coef.UpperRow(); i++) {
466 ParamV = 1.;
467 for (j=Coef.LowerCol(); j<=Coef.UpperCol(); j++) {
468 Standard_Integer PolyIndex = i + 4*(j-1);
469 gp_Pnt aPoint;
470 aPoint.SetCoord(XPoly->Value(PolyIndex)*ParamU*ParamV,
471 YPoly->Value(PolyIndex)*ParamU*ParamV,
472 ZPoly->Value(PolyIndex)*ParamU*ParamV);
473 Coef.SetValue(i, j, aPoint);
474 ParamV = ParamV *deltaV(VSeg);
475 }
476 ParamU = ParamU * deltaU(USeg);
477 }
478 PLib::CoefficientsPoles(Coef,PLib::NoWeights2(),BzPole,PLib::NoWeights2());
479
480 // C0 check and correction for poles lying on isoparametrics U=0 & V=0
481 iBs = (USeg-1)*DegreeU + BsPole.LowerRow();
482 jBs = (VSeg-1)*DegreeV + BsPole.LowerCol();
483 jBz = BzPole.LowerCol();
484 for (iBz=BzPole.LowerRow(); iBz<=BzPole.UpperRow(); iBz++) {
485 if (!BzPole.Value(iBz,jBz).IsEqual(BsPole.Value(iBs,jBs), epsgeom)) {
486 wasC0=Standard_False;
487 gp_Pnt MidPoint;
488 Standard_Real XCoord = 0.5 *
489 (BzPole.Value(iBz,jBz).X() + BsPole.Value(iBs,jBs).X());
490 Standard_Real YCoord = 0.5 *
491 (BzPole.Value(iBz,jBz).Y() + BsPole.Value(iBs,jBs).Y());
492 Standard_Real ZCoord = 0.5 *
493 (BzPole.Value(iBz,jBz).Z() + BsPole.Value(iBs,jBs).Z());
494 MidPoint.SetCoord(XCoord, YCoord, ZCoord);
495 BsPole.SetValue(iBs++, jBs, MidPoint);
496 }
497 else
498 BsPole.SetValue(iBs++, jBs, BzPole.Value(iBz,jBz));
499 }
500
501 iBs = (USeg-1)*DegreeU + BsPole.LowerRow();
502 iBz = BzPole.LowerRow();
503 for (jBz=BzPole.LowerCol(); jBz<=BzPole.UpperCol(); jBz++) {
504 // C0 check and correction for poles lying on isoparametrics U=0 & V=0
505 if (!BzPole.Value(iBz,jBz).IsEqual(BsPole.Value(iBs,jBs), epsgeom)) {
506 wasC0=Standard_False;
507 gp_Pnt MidPoint;
508 Standard_Real XCoord = 0.5 *
509 (BzPole.Value(iBz,jBz).X() + BsPole.Value(iBs,jBs).X());
510 Standard_Real YCoord = 0.5 *
511 (BzPole.Value(iBz,jBz).Y() + BsPole.Value(iBs,jBs).Y());
512 Standard_Real ZCoord = 0.5 *
513 (BzPole.Value(iBz,jBz).Z() + BsPole.Value(iBs,jBs).Z());
514 MidPoint.SetCoord(XCoord, YCoord, ZCoord);
515 BsPole.SetValue(iBs, jBs++, MidPoint);
516 }
517 else
518 BsPole.SetValue(iBs, jBs++, BzPole.Value(iBz,jBz));
519 }
520
521 iBs = BsPole.LowerRow() + (USeg-1)*DegreeU + 1;
522 jBs = BsPole.LowerCol() + (VSeg-1)*DegreeV + 1;
523 for (iBz=BzPole.LowerRow()+1; iBz<=BzPole.UpperRow(); iBz++) {
524 for (jBz=BzPole.LowerCol()+1; jBz<=BzPole.UpperCol(); jBz++)
525 BsPole.SetValue(iBs, jBs++, BzPole.Value(iBz,jBz));
526 jBs = BsPole.LowerCol() + (VSeg-1)*DegreeV + 1;
527 iBs++;
528 }
529 }
530 }
531
532 // Building result taking into account transformation if any :
533 // ===========================================================
534
535 if (st->HasTransf()) {
536 gp_GTrsf GSplTrsf(st->CompoundLocation());
537 gp_Trsf SplTrsf;
538 Standard_Real epsilon = 1.E-04;
539 if (IGESData_ToolLocation::ConvertLocation(epsilon,GSplTrsf,SplTrsf))
540 for (iBs=BsPole.LowerRow(); iBs<=BsPole.UpperRow(); iBs++)
541 for (jBs=BsPole.LowerCol(); jBs<=BsPole.UpperCol(); jBs++)
542 BsPole.SetValue(iBs, jBs, BsPole.Value(iBs,jBs).Transformed(SplTrsf));
543// else
544// AddWarning(start, "Transformation skipped : Not a similarity");
545 }
546
547 res = new Geom_BSplineSurface
548 (BsPole, UKnot, VKnot, UMult, VMult, DegreeU, DegreeV);
549 if (wasC0) returned += 1;
550 return returned;
551}
552
553
554//=======================================================================
555//function : IGESConvGeom::IncreaseSurfaceContinuity
556//purpose :
557//=======================================================================
558Standard_Integer IGESConvGeom::IncreaseSurfaceContinuity (const Handle(Geom_BSplineSurface)& res,
559 const Standard_Real epsgeom,
560 const Standard_Integer continuity)
561{
562 if (continuity < 1) return continuity;
563 Standard_Boolean isC1 = Standard_True, isC2 = Standard_True;
564 Standard_Integer i,j;
565
566 i = res->LastUKnotIndex(); //knots.Upper();
567 j = res->FirstUKnotIndex(); //knots.Lower();
568 Standard_Integer DegreeU = res->UDegree();
569
570 Standard_Boolean isModified;
571 do {
572 isModified = Standard_False;
573 for (i = res->FirstUKnotIndex()+1; i < res->LastUKnotIndex(); i++)
574 if(DegreeU - res->UMultiplicity(i) < continuity) {
575 if (continuity >= 2) {
576 if (!res->RemoveUKnot(i, DegreeU-2, epsgeom)) {
577 isC2 = Standard_False;
578 Standard_Boolean locOK = res->RemoveUKnot(i, DegreeU-1, epsgeom); // is C1 ?
579 isC1 &= locOK;
580 isModified |= locOK;
581 }
582 else
583 isModified = Standard_True;
584 }
585 else {
586 Standard_Boolean locOK = res->RemoveUKnot(i, DegreeU-1, epsgeom); // is C1 ?
587 isC1 &= locOK;
588 isModified |= locOK;
589 }
590 }
591 }
592 while (isModified);
593
594 Standard_Integer DegreeV = res->VDegree();
595 do {
596 isModified = Standard_False;
597 for (i = res->FirstVKnotIndex()+1; i < res->LastVKnotIndex(); i++)
598 if(DegreeV - res->VMultiplicity(i) < continuity) {
599 if (continuity >= 2) {
600 if (!res->RemoveVKnot(i, DegreeV-2, epsgeom)) {
601 isC2 = Standard_False;
602 Standard_Boolean locOK = res->RemoveVKnot(i, DegreeV-1, epsgeom); // is C1 ?
603 isC1 &= locOK;
604 isModified |= locOK;
605 }
606 else
607 isModified = Standard_True;
608 }
609 else {
610 Standard_Boolean locOK = res->RemoveVKnot(i, DegreeV-1, epsgeom); // is C1 ?
611 isC1 &= locOK;
612 isModified |= locOK;
613 }
614 }
615 }
616 while (isModified);
617
618 /*
619 while (--i > j) { // from 2 to NbKnots-1
620 if (continuity >= 2) {
621 if (!res->RemoveUKnot(i, DegreeU-2, epsgeom)) { // is C2 ?
622 isC2 = Standard_False;
623 isC1 &= res->RemoveUKnot(i, DegreeU-1, epsgeom); // is C1 ?
624 }
625 }
626 else {
627 isC1 &= res->RemoveUKnot(i, DegreeU-1, epsgeom); // is C1 ?
628 }
629 }
630
631 i = res->LastVKnotIndex(); //knots.Upper();
632 j = res->FirstVKnotIndex(); //knots.Lower();
633 Standard_Integer DegreeV = res->VDegree();
634 while (--i > j) { // from 2 to NbKnots-1
635 if (continuity >= 2) {
636 if (!res->RemoveVKnot(i, DegreeV-2, epsgeom)) { // is C2 ?
637 isC2 = Standard_False;
638 isC1 &= res->RemoveVKnot(i, DegreeV-1, epsgeom); // is C1 ?
639 }
640 }
641 else {
642 isC1 &= res->RemoveVKnot(i, DegreeV-1, epsgeom); // is C1 ?
643 }
644 }*/
645
646
647 if (!isC1) return 0;
648 if (continuity >= 2 && !isC2) return 1;
649 return continuity;
650}
651
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