1 // Created on: 1997-08-06
2 // Created by: Philippe MANGIN
3 // Copyright (c) 1997-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
18 #include <Convert_CompPolynomialToPoles.hxx>
19 #include <GeomFill_QuasiAngularConvertor.hxx>
25 #include <StdFail_NotDone.hxx>
26 #include <TColStd_Array1OfReal.hxx>
27 #include <TColStd_HArray1OfInteger.hxx>
28 #include <TColStd_HArray1OfReal.hxx>
29 #include <TColStd_HArray2OfReal.hxx>
31 #define NullAngle 1.e-6
33 // QuasiAngular is rational definition of Cos(theta(t) and sin(theta)
34 // on [-alpha, +alpha] with
37 // cos (theta(t)) = ----------
42 // sin (theta(t)) = ----------
53 // b =--------- + -----------------------
55 // gamma 3*(tang gamma - gamma)
56 // with gamma = alpha / 2
59 GeomFill_QuasiAngularConvertor::GeomFill_QuasiAngularConvertor():
60 myinit(Standard_False),
63 W(1,7), Vx(1, 7), Vy(1, 7), Vw(1,7)
67 Standard_Boolean GeomFill_QuasiAngularConvertor::Initialized() const
72 void GeomFill_QuasiAngularConvertor::Init()
74 if (myinit) return; //On n'initialise qu'une fois
75 Standard_Integer ii, jj, Ordre=7;
77 TColStd_Array1OfReal Coeffs(1, Ordre*Ordre), TrueInter(1,2), Inter(1,2);
78 Handle(TColStd_HArray2OfReal)
79 Poles1d = new (TColStd_HArray2OfReal) (1, Ordre, 1, Ordre);
82 Inter.SetValue(1, -1);
84 TrueInter.SetValue(1, -1);
85 TrueInter.SetValue(2, 1);
88 for (ii=1; ii<=Ordre; ii++) { Coeffs.SetValue(ii+(ii-1)*Ordre, 1); }
91 Convert_CompPolynomialToPoles
92 AConverter(Ordre, Ordre-1, Ordre-1,
96 AConverter.Poles(Poles1d);
98 for (jj=1; jj<=Ordre; jj++) {
99 for (ii=1; ii<=Ordre; ii++) {
100 terme = Poles1d->Value(ii,jj);
101 if (Abs(terme-1) < 1.e-9) terme = 1 ; //petite retouche
102 if (Abs(terme+1) < 1.e-9) terme = -1;
107 // Init des polynomes
114 myinit = Standard_True;
117 void GeomFill_QuasiAngularConvertor::Section(const gp_Pnt& FirstPnt,
118 const gp_Pnt& Center,
120 const Standard_Real Angle,
121 TColgp_Array1OfPnt& Poles,
122 TColStd_Array1OfReal& Weights)
124 Standard_Real b, b2, c, c2,tan_b;
126 Standard_Real beta, beta2, beta3, beta4, beta5, beta6, wi;
129 // Calcul de la transformation
130 gp_Vec V1(Center, FirstPnt), V2;
131 Rot.SetRotation(Dir.XYZ(), Angle/2);
137 gp_Mat M(V1.X(), V2.X(), 0,
141 // Calcul des coeffs -----------
144 beta3 = beta * beta2;
149 if ((M_PI/2 - beta)> NullAngle) {
150 if (Abs(beta) < NullAngle) {
151 Standard_Real cf = 2.0/(3*5*7);
152 b = - (0.2+cf*beta2) / (1+ 0.2*beta2);
158 b += beta / (3*(tan_b - beta));
161 else b = ((Standard_Real) -1)/beta2;
162 c = ((Standard_Real) 1)/ 3 + b;
167 Vx(3) = beta2*(2*b - 1);
168 Vx(5) = beta4*(b2 - 2*c);
173 Vy(4) = beta3*2*(c+b);
177 Vw(3) = beta2*(1 + 2*b);
178 Vw(5) = beta4*(2*c + b2);
188 for (ii=1; ii<=7; ii++) {
190 pnt.SetCoord(Px(ii)/wi, Py(ii)/wi, 0);
193 Poles(ii).ChangeCoord() = pnt;
198 void GeomFill_QuasiAngularConvertor::Section(const gp_Pnt& FirstPnt,
199 const gp_Vec& DFirstPnt,
200 const gp_Pnt& Center,
201 const gp_Vec& DCenter,
204 const Standard_Real Angle,
205 const Standard_Real DAngle,
206 TColgp_Array1OfPnt& Poles,
207 TColgp_Array1OfVec& DPoles,
208 TColStd_Array1OfReal& Weights,
209 TColStd_Array1OfReal& DWeights)
211 Standard_Integer Ordre = 7;
212 math_Vector DVx(1, Ordre), DVy(1, Ordre), DVw(1, Ordre),
213 DPx(1, Ordre), DPy(1, Ordre), DW(1, Ordre);
214 Standard_Real b, b2, c, c2,tan_b;
215 Standard_Real bpr, dtan_b;
217 Standard_Real beta, beta2, beta3, beta4, beta5, beta6, betaprim;
218 gp_Vec V1(Center, FirstPnt), V1Prim, V2;
220 // Calcul des transformations
222 Standard_Real Sina, Cosa;
223 gp_Mat Rot, RotPrim, D, DPrim;
224 // La rotation s'ecrit I + sin(Ang) * D + (1. - cos(Ang)) * D*D
225 // ou D est l'application x -> Dir ^ x
226 Rot.SetRotation(Dir.XYZ(), Angle/2);
227 // La derive s'ecrit donc :
228 // AngPrim * (sin(Ang)*D*D + cos(Ang)*D)
229 // + sin(Ang)*DPrim + (1. - cos(Ang)) *(DPrim*D + D*DPrim)
232 D.SetCross(Dir.XYZ());
233 DPrim.SetCross(DDir.XYZ());
235 RotPrim = (D.Powered(2)).Multiplied(Sina);
236 RotPrim += D.Multiplied(Cosa);
238 RotPrim += DPrim.Multiplied(Sina);
239 RotPrim += ((DPrim.Multiplied(D)).Added(D.Multiplied(DPrim))).Multiplied(1-Cosa);
241 aux = (DFirstPnt - DCenter).XYZ().Multiplied(Rot);
242 aux += V1.XYZ().Multiplied(RotPrim);
248 gp_Mat M (V1.X(), V2.X(), 0,
251 V2 = (DDir.Crossed(V1)).Added(Dir.Crossed(V1Prim));
252 gp_Mat MPrim (V1Prim.X(), V2.X(), 0,
253 V1Prim.Y(), V2.Y(), 0,
254 V1Prim.Z(), V2.Z(), 0);
256 // Calcul des constante -----------
260 beta3 = beta * beta2;
265 if (Abs(beta) < NullAngle) {
266 // On calcul b par D.L
267 Standard_Real cf = 2.0/(3*5*7);
268 Standard_Real Num, Denom;
269 Num = 0.2 + cf*beta2;
272 bpr = -2*beta*betaprim*(cf*Denom - 0.2*Num)/(Denom*Denom);
275 b = ((Standard_Real) -1)/beta2;
276 bpr = (2*betaprim) / beta3;
277 if ((M_PI/2 - beta)> NullAngle) {
279 dtan_b = betaprim * (1 + tan_b*tan_b);
282 bpr += (betaprim*tan_b - beta*dtan_b) / (3*b2*b2);
286 c = ((Standard_Real) 1)/ 3 + b;
292 Vx(3) = beta2*(2*b - 1);
293 Vx(5) = beta4*(b2 - 2*c);
296 DVx(3) = 2*(beta*betaprim*(2*b - 1) + bpr*beta2);
297 DVx(5) = 4*beta3*betaprim*(b2 - 2*c) + 2*beta4*bpr*(b-1);
298 DVx(7) = - 6*beta5*betaprim*c2 - 2*beta6*bpr*c;
302 Vy(4) = beta3*2*(c+b);
306 DVy(4) = 6*beta2*betaprim*(b+c) + 4*beta3*bpr;
307 DVy(6) = 10*beta4*betaprim*b*c + 2*beta5*bpr*(b+c);
310 Vw(3) = beta2*(1 + 2*b);
311 Vw(5) = beta4*(2*c + b2);
314 // DVw(3) = 2*(beta*betaprim*(1 + 2*b) + beta2*bpr);
315 DVw(3) = 2*beta*(betaprim*(1 + 2*b) + beta*bpr);
316 // DVw(5) = 4*beta3*betaprim*(2*c + b2) + 2*beta4*bpr*(b+1);
317 DVw(5) = 2*beta3*(2*betaprim*(2*c + b2) + beta*bpr*(b+1));
318 // DVw(7) = 6*beta5*betaprim*c2 + 2*beta6*bpr*c;
319 DVw(7) = 2*beta5*c*(3*betaprim*c + beta*bpr);
327 DPx.Multiply(B, DVx);
328 DPy.Multiply(B, DVy);
334 for (ii=1; ii<=Ordre; ii++) {
336 P.SetCoord(Px(ii)/wi, Py(ii)/wi, 0);
337 DP.SetCoord(DPx(ii)/wi, DPy(ii)/wi, 0);
340 Poles(ii).ChangeCoord() = M*P + Center.XYZ();
343 aux.SetLinearForm(1, P, 1, DP, DCenter.XYZ());
344 DPoles(ii).SetXYZ(aux);
346 DWeights(ii) = DW(ii);
350 void GeomFill_QuasiAngularConvertor::Section(const gp_Pnt& FirstPnt,
351 const gp_Vec& DFirstPnt,
352 const gp_Vec& D2FirstPnt,
353 const gp_Pnt& Center,
354 const gp_Vec& DCenter,
355 const gp_Vec& D2Center,
359 const Standard_Real Angle,
360 const Standard_Real DAngle,
361 const Standard_Real D2Angle,
362 TColgp_Array1OfPnt& Poles,
363 TColgp_Array1OfVec& DPoles,
364 TColgp_Array1OfVec& D2Poles,
365 TColStd_Array1OfReal& Weights,
366 TColStd_Array1OfReal& DWeights,
367 TColStd_Array1OfReal& D2Weights)
369 Standard_Integer Ordre = 7;
370 math_Vector DVx(1, Ordre), DVy(1, Ordre), DVw(1, Ordre),
371 D2Vx(1, Ordre), D2Vy(1, Ordre), D2Vw(1, Ordre);
372 math_Vector DPx(1, Ordre), DPy(1, Ordre), DW(1, Ordre),
373 D2Px(1, Ordre), D2Py(1, Ordre), D2W(1, Ordre);
376 Standard_Real aux, daux, b, b2, c, c2, bpr, bsc;
377 gp_Vec V1(Center, FirstPnt), V1Prim, V1Secn, V2;
379 // Calcul des transformations
381 Standard_Real Sina, Cosa;
382 gp_Mat Rot, RotPrim, RotSecn, D, DPrim, DSecn, DDP, Maux;
383 // La rotation s'ecrit I + sin(Ang) * D + (1. - cos(Ang)) * D*D
384 // ou D est l'application x -> Dir ^ x
385 Rot.SetRotation(Dir.XYZ(), Angle/2);
386 // La derive s'ecrit donc :
387 // AngPrim * (sin(Ang)*D*D + cos(Ang)*D)
388 // + sin(Ang)*DPrim + (1. - cos(Ang)) *(DPrim*D + D*DPrim)
391 D.SetCross(Dir.XYZ());
392 DPrim.SetCross(DDir.XYZ());
393 DSecn.SetCross(D2Dir.XYZ());
395 DDP = (DPrim.Multiplied(D)).Added(D.Multiplied(DPrim));
396 RotPrim = (D.Powered(2)).Multiplied(Sina);
397 RotPrim += D.Multiplied(Cosa);
399 RotPrim += DPrim.Multiplied(Sina);
400 RotPrim += DDP.Multiplied(1-Cosa);
402 RotSecn = (D.Powered(2)).Multiplied(Sina);
403 RotSecn += D.Multiplied(Cosa);
404 RotSecn *= D2Angle/2;
405 Maux = (D.Powered(2)).Multiplied(Cosa);
406 Maux -= D.Multiplied(Sina);
408 Maux += DDP.Multiplied(2*Sina);
409 Maux += DPrim.Multiplied(2*Cosa);
412 Maux = (DSecn.Multiplied(D)).Added(D.Multiplied(DSecn));
413 Maux += (DPrim.Powered(2)).Multiplied(2);
415 Maux += DSecn.Multiplied(Sina);
418 V1Prim = DFirstPnt - DCenter;
419 auxyz = (D2FirstPnt - D2Center).XYZ().Multiplied(Rot);
420 auxyz += 2*(V1Prim.XYZ().Multiplied(RotPrim));
421 auxyz += V1.XYZ().Multiplied(RotSecn);
422 V1Secn.SetXYZ(auxyz);
423 auxyz = V1Prim.XYZ().Multiplied(Rot);
424 auxyz += V1.XYZ().Multiplied(RotPrim);
425 V1Prim.SetXYZ(auxyz);
431 gp_Mat M (V1.X(), V2.X(), 0,
434 V2 = (DDir.Crossed(V1)).Added(Dir.Crossed(V1Prim));
435 gp_Mat MPrim (V1Prim.X(), V2.X(), 0,
436 V1Prim.Y(), V2.Y(), 0,
437 V1Prim.Z(), V2.Z(), 0);
441 V2 += (D2Dir.Crossed(V1)).Added(Dir.Crossed(V1Secn));
442 gp_Mat MSecn (V1Secn.X(), V2.X(), 0,
443 V1Secn.Y(), V2.Y(), 0,
444 V1Secn.Z(), V2.Z(), 0);
447 // Calcul des coeff -----------
448 Standard_Real tan_b, dtan_b, d2tan_b;
449 Standard_Real beta, beta2, beta3, beta4, beta5, beta6, betaprim, betasecn;
450 Standard_Real betaprim2, bpr2;
453 betasecn = D2Angle/4;
455 beta3 = beta * beta2;
459 betaprim2 = betaprim * betaprim;
461 if (Abs(beta) < NullAngle) {
462 // On calcul b par D.L
463 Standard_Real cf =-2.0/21;
464 Standard_Real Num, Denom, aux;
465 Num = 0.2 + cf*beta2;
467 aux = (cf*Denom - 0.2*Num)/(Denom*Denom);
469 bpr = -2*beta*betaprim*aux;
470 bsc = 2*aux*(betaprim2 + beta*betasecn - 2*beta*betaprim2);
474 b = ((Standard_Real) -1)/beta2;
475 bpr = (2*betaprim) / beta3;
476 bsc = (2*betasecn - 6*betaprim*(betaprim/beta)) / beta3;
477 if ((M_PI/2 - beta)> NullAngle) {
479 dtan_b = betaprim * (1 + tan_b*tan_b);
480 d2tan_b = betasecn * (1 + tan_b*tan_b)
481 + 2*betaprim * tan_b * dtan_b;
484 aux = betaprim*tan_b - beta*dtan_b;
485 bpr += aux / (3*b2*b2);
486 daux = betasecn*tan_b - beta*d2tan_b;
487 bsc += (daux - 2*aux*betaprim*tan_b*tan_b/b2)/(3*b2*b2);
491 c = ((Standard_Real) 1)/ 3 + b;
498 Vx(3) = beta2*(2*b - 1);
499 Vx(5) = beta4*(b2 - 2*c);
502 DVx(3) = 2*(beta*betaprim*(2*b - 1) + bpr*beta2);
503 DVx(5) = 4*beta3*betaprim*(b2 - 2*c) + 2*beta4*bpr*(b-1);
504 DVx(7) = - 6*beta5*betaprim*c2 - 2*beta6*bpr*c;
506 D2Vx(3) = 2*((betaprim2+beta*betasecn)*(2*b - 1)
507 + 8*beta*betaprim*bpr
509 D2Vx(5) = 4*(b2 - 2*c)*(3*beta2*betaprim2 + beta3*betasecn)
510 + 16*beta3*betaprim*bpr*(b-1)
511 + 2*beta4*(bsc*(b-1)+bpr2);
512 D2Vx(7) = - 6 * c2 * (5*beta4*betaprim2+beta5*betasecn)
513 - 24*beta5*betaprim*bpr*c
514 - 2*beta6*(bsc*c + bpr2);
518 Vy(4) = beta3*2*(c+b);
522 DVy(4) = 6*beta2*betaprim*(b+c) + 4*beta3*bpr;
523 DVy(6) = 10*beta4*betaprim*b*c + 2*beta5*bpr*(b+c);
525 D2Vy(2) = 2*betasecn;
526 D2Vy(4) = 6*(b+c)*(2*beta*betaprim2 + beta2*betasecn)
527 + 24*beta2*betaprim*bpr*(b+c)
529 D2Vy(6) = 10*b*c*(4*beta3*betaprim2 + beta4*betasecn)
530 + 40 * beta4*betaprim*bpr*(b+c)
531 + 2*beta5*(bsc*(b+c)+ 2*bpr2);
534 Vw(3) = beta2*(1 + 2*b);
535 Vw(5) = beta4*(2*c + b2);
538 DVw(3) = 2*(beta*betaprim*(1 + 2*b) + beta2*bpr);
539 DVw(5) = 4*beta3*betaprim*(2*c + b2) + 2*beta4*bpr*(b+1);
540 DVw(7) = 6*beta5*betaprim*c2 + 2*beta6*bpr*c;
542 D2Vw(3) = 2*((betaprim2+beta*betasecn)*(2*b + 1)
543 + 8*beta*betaprim*bpr
545 D2Vw(5) = 4*(b2 + 2*c)*(3*beta2*betaprim2 + beta3*betasecn)
546 + 16*beta3*betaprim*bpr*(b+11)
547 + 2*beta4*(bsc*(b+1)+bpr2);
548 D2Vw(7) = 6 * c2 * (5*beta4*betaprim2+beta5*betasecn)
549 + 24*beta5*betaprim*bpr*c
550 + 2*beta6*(bsc*c + bpr2);
562 D2W.Multiply(B, D2Vw);
565 Standard_Real wi, dwi;
566 for (ii=1; ii<=Ordre; ii++) {
569 P.SetCoord(Px(ii)/wi, Py(ii)/wi, 0);
570 DP.SetCoord(DPx(ii)/wi, DPy(ii)/wi, 0);
572 D2P.SetCoord(D2Px(ii)/wi, D2Py(ii)/wi, 0);
573 D2P -= 2*(dwi/wi)*DP;
574 D2P += (2*Pow(dwi/wi, 2) - D2W(ii)/wi)*P;
577 Poles(ii).ChangeCoord() = M*P + Center.XYZ();
578 auxyz.SetLinearForm(1, MPrim*P,
581 DPoles(ii).SetXYZ(auxyz);
585 auxyz.SetLinearForm(1, P,
589 D2Poles(ii).SetXYZ(auxyz);
592 D2Weights(ii) = D2W(ii);