1 // Created on: 1993-12-02
2 // Created by: Jacques GOUSSARD
3 // Copyright (c) 1993-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #include <BlendFunc_RuledInv.ixx>
19 #include <Precision.hxx>
21 BlendFunc_RuledInv::BlendFunc_RuledInv(const Handle(Adaptor3d_HSurface)& S1,
22 const Handle(Adaptor3d_HSurface)& S2,
23 const Handle(Adaptor3d_HCurve)& C) :
24 surf1(S1),surf2(S2),curv(C)
27 void BlendFunc_RuledInv::Set(const Standard_Boolean OnFirst,
28 const Handle(Adaptor2d_HCurve2d)& C)
34 Standard_Integer BlendFunc_RuledInv::NbEquations () const
39 void BlendFunc_RuledInv::GetTolerance(math_Vector& Tolerance,
40 const Standard_Real Tol) const
42 Tolerance(1) = csurf->Resolution(Tol);
43 Tolerance(2) = curv->Resolution(Tol);
45 Tolerance(3) = surf2->UResolution(Tol);
46 Tolerance(4) = surf2->VResolution(Tol);
49 Tolerance(3) = surf1->UResolution(Tol);
50 Tolerance(4) = surf1->VResolution(Tol);
54 void BlendFunc_RuledInv::GetBounds(math_Vector& InfBound,
55 math_Vector& SupBound) const
57 InfBound(1) = csurf->FirstParameter();
58 InfBound(2) = curv->FirstParameter();
59 SupBound(1) = csurf->LastParameter();
60 SupBound(2) = curv->LastParameter();
63 InfBound(3) = surf2->FirstUParameter();
64 InfBound(4) = surf2->FirstVParameter();
65 SupBound(3) = surf2->LastUParameter();
66 SupBound(4) = surf2->LastVParameter();
67 if(!Precision::IsInfinite(InfBound(3)) &&
68 !Precision::IsInfinite(SupBound(3))) {
69 const Standard_Real range = (SupBound(3) - InfBound(3));
73 if(!Precision::IsInfinite(InfBound(4)) &&
74 !Precision::IsInfinite(SupBound(4))) {
75 const Standard_Real range = (SupBound(4) - InfBound(4));
81 InfBound(3) = surf1->FirstUParameter();
82 InfBound(4) = surf1->FirstVParameter();
83 SupBound(3) = surf1->LastUParameter();
84 SupBound(4) = surf1->LastVParameter();
85 if(!Precision::IsInfinite(InfBound(3)) &&
86 !Precision::IsInfinite(SupBound(3))) {
87 const Standard_Real range = (SupBound(3) - InfBound(3));
91 if(!Precision::IsInfinite(InfBound(4)) &&
92 !Precision::IsInfinite(SupBound(4))) {
93 const Standard_Real range = (SupBound(4) - InfBound(4));
100 Standard_Boolean BlendFunc_RuledInv::IsSolution(const math_Vector& Sol,
101 const Standard_Real Tol)
103 math_Vector valsol(1,4);
105 if (Abs(valsol(1)) <= Tol &&
106 Abs(valsol(2)) <= Tol &&
107 Abs(valsol(3)) <= Tol &&
108 Abs(valsol(4)) <= Tol)
109 return Standard_True;
111 return Standard_False;
115 Standard_Boolean BlendFunc_RuledInv::Value(const math_Vector& X,
120 curv->D1(X(2),ptcur,d1cur);
122 const gp_XYZ nplan = d1cur.Normalized().XYZ();
123 const Standard_Real theD = -(nplan.Dot(ptcur.XYZ()));
124 const gp_Pnt2d pt2d(csurf->Value(X(1)));
127 gp_Vec d1u1,d1v1,d1u2,d1v2;
130 surf1->D1(pt2d.X(),pt2d.Y(),pts1,d1u1,d1v1);
131 surf2->D1(X(3),X(4),pts2,d1u2,d1v2);
135 surf1->D1(X(3),X(4),pts1,d1u1,d1v1);
136 surf2->D1(pt2d.X(),pt2d.Y(),pts2,d1u2,d1v2);
139 const gp_XYZ temp(pts2.XYZ()-pts1.XYZ());
141 gp_XYZ ns1 = d1u1.Crossed(d1v1).XYZ();
142 gp_XYZ ns2 = d1u2.Crossed(d1v2).XYZ();
143 const Standard_Real norm1 = nplan.Crossed(ns1).Modulus();
144 const Standard_Real norm2 = nplan.Crossed(ns2).Modulus();
145 ns1.SetLinearForm(nplan.Dot(ns1)/norm1,nplan, -1./norm1,ns1);
146 ns2.SetLinearForm(nplan.Dot(ns2)/norm2,nplan, -1./norm2,ns2);
148 F(1) = (nplan.Dot(pts1.XYZ())) + theD;
149 F(2) = (nplan.Dot(pts2.XYZ())) + theD;
151 F(3) = temp.Dot(ns1);
152 F(4) = temp.Dot(ns2);
154 return Standard_True;
157 Standard_Boolean BlendFunc_RuledInv::Derivatives(const math_Vector& X,
162 curv->D2(X(2),ptcur,d1cur,d2cur);
164 const Standard_Real normtgcur = d1cur.Magnitude();
165 const gp_Vec nplan = d1cur.Normalized();
168 dnplan.SetLinearForm(-nplan.Dot(d2cur),nplan,d2cur);
173 csurf->D1(X(1),p2d,v2d);
176 gp_Vec d1u1,d1v1,d1u2,d1v2;
177 gp_Vec d2u1,d2v1,d2u2,d2v2,d2uv1,d2uv2;
181 surf1->D2(p2d.X(),p2d.Y(),pts1,d1u1,d1v1,d2u1,d2v1,d2uv1);
182 surf2->D2(X(3),X(4),pts2,d1u2,d1v2,d2u2,d2v2,d2uv2);
183 dpdt.SetLinearForm(v2d.X(),d1u1,v2d.Y(),d1v1);
184 p1p2 = gp_Vec(pts1,pts2);
185 D(1,1) = dpdt.Dot(nplan);
186 D(1,2) = dnplan.XYZ().Dot(pts1.XYZ()-ptcur.XYZ()) - normtgcur;
191 D(2,2) = dnplan.XYZ().Dot(pts2.XYZ()-ptcur.XYZ()) - normtgcur;
192 D(2,3) = d1u2.Dot(nplan);
193 D(2,4) = d1v2.Dot(nplan);
197 surf1->D2(X(3),X(4),pts1,d1u1,d1v1,d2u1,d2v1,d2uv1);
198 surf2->D2(p2d.X(),p2d.Y(),pts2,d1u2,d1v2,d2u2,d2v2,d2uv2);
199 dpdt.SetLinearForm(v2d.X(),d1u2,v2d.Y(),d1v2);
200 p1p2 = gp_Vec(pts1,pts2);
202 D(1,2) = dnplan.XYZ().Dot(pts1.XYZ()-ptcur.XYZ()) - normtgcur;
203 D(1,3) = d1u1.Dot(nplan);
204 D(1,4) = d1v1.Dot(nplan);
206 D(2,1) = dpdt.Dot(nplan);
207 D(2,2) = dnplan.XYZ().Dot(pts2.XYZ()-ptcur.XYZ()) - normtgcur;
212 const gp_Vec ns1 = d1u1.Crossed(d1v1);
213 const gp_Vec ns2 = d1u2.Crossed(d1v2);
214 const gp_Vec ncrossns1 = nplan.Crossed(ns1);
215 const gp_Vec ncrossns2 = nplan.Crossed(ns2);
216 const Standard_Real norm1 = ncrossns1.Magnitude();
217 const Standard_Real norm2 = ncrossns2.Magnitude();
219 const Standard_Real ndotns1 = nplan.Dot(ns1);
220 const Standard_Real ndotns2 = nplan.Dot(ns2);
223 nor1.SetLinearForm(ndotns1/norm1,nplan,-1./norm1,ns1);
224 nor2.SetLinearForm(ndotns2/norm2,nplan,-1./norm2,ns2);
227 D(3,3) = d1u2.Dot(nor1);
228 D(3,4) = d1v2.Dot(nor1);
230 D(4,1) = -(dpdt.Dot(nor2));
233 D(3,1) = dpdt.Dot(nor1);
235 D(4,3) = -(d1u1.Dot(nor2));
236 D(4,4) = -(d1v1.Dot(nor2));
239 gp_Vec resul1,resul2,temp;
240 Standard_Real grosterme;
242 // Derivee de nor1 par rapport a u1
244 temp = d2u1.Crossed(d1v1).Added(d1u1.Crossed(d2uv1));
245 grosterme = ncrossns1.Dot(nplan.Crossed(temp))/norm1/norm1;
246 resul1.SetLinearForm(-(grosterme*ndotns1-nplan.Dot(temp))/norm1,nplan,
250 // Derivee par rapport a v1
252 temp = d2uv1.Crossed(d1v1).Added(d1u1.Crossed(d2v1));
253 grosterme = ncrossns1.Dot(nplan.Crossed(temp))/norm1/norm1;
254 resul2.SetLinearForm(-(grosterme*ndotns1-nplan.Dot(temp))/norm1,nplan,
259 resul1.SetLinearForm(v2d.X(),resul1,v2d.Y(),resul2);
260 D(3,1) = p1p2.Dot(resul1) - (dpdt.Dot(nor1));
263 D(3,3) = -(d1u1.Dot(nor1)) + p1p2.Dot(resul1);
264 D(3,4) = -(d1v1.Dot(nor1)) + p1p2.Dot(resul2);
267 // Derivee de nor2 par rapport a u2
268 temp = d2u2.Crossed(d1v2).Added(d1u2.Crossed(d2uv2));
269 grosterme = ncrossns2.Dot(nplan.Crossed(temp))/norm2/norm2;
270 resul1.SetLinearForm(-(grosterme*ndotns2-nplan.Dot(temp))/norm2,nplan,
274 // Derivee par rapport a v2
275 temp = d2uv2.Crossed(d1v2).Added(d1u2.Crossed(d2v2));
276 grosterme = ncrossns2.Dot(nplan.Crossed(temp))/norm2/norm2;
277 resul2.SetLinearForm(-(grosterme*ndotns2-nplan.Dot(temp))/norm2,nplan,
282 D(4,3) = d1u2.Dot(nor2) + p1p2.Dot(resul1);
283 D(4,4) = d1v2.Dot(nor2) + p1p2.Dot(resul2);
286 resul1.SetLinearForm(v2d.X(),resul1,v2d.Y(),resul2);
287 D(4,1) = p1p2.Dot(resul1) + dpdt.Dot(nor2) ;
291 // derivee par rapport a w (parametre sur ligne guide)
293 grosterme = ncrossns1.Dot(dnplan.Crossed(ns1))/norm1/norm1;
294 resul1.SetLinearForm(-(grosterme*ndotns1-dnplan.Dot(ns1))/norm1,nplan,
295 ndotns1/norm1,dnplan,
296 grosterme/norm1,ns1);
299 grosterme = ncrossns2.Dot(dnplan.Crossed(ns2))/norm2/norm2;
300 resul2.SetLinearForm(-(grosterme*ndotns2-dnplan.Dot(ns2))/norm2,nplan,
301 ndotns2/norm2,dnplan,
302 grosterme/norm2,ns2);
304 D(3,2) = p1p2.Dot(resul1);
305 D(4,2) = p1p2.Dot(resul2);
307 return Standard_True;
311 Standard_Boolean BlendFunc_RuledInv::Values(const math_Vector& X,
317 curv->D2(X(2),ptcur,d1cur,d2cur);
319 const Standard_Real normtgcur = d1cur.Magnitude();
320 const gp_Vec nplan = d1cur.Normalized();
321 const Standard_Real theD = -(nplan.XYZ().Dot(ptcur.XYZ()));
324 dnplan.SetLinearForm(-nplan.Dot(d2cur),nplan,d2cur);
329 csurf->D1(X(1),p2d,v2d);
332 gp_Vec d1u1,d1v1,d1u2,d1v2;
333 gp_Vec d2u1,d2v1,d2u2,d2v2,d2uv1,d2uv2;
337 surf1->D2(p2d.X(),p2d.Y(),pts1,d1u1,d1v1,d2u1,d2v1,d2uv1);
338 surf2->D2(X(3),X(4),pts2,d1u2,d1v2,d2u2,d2v2,d2uv2);
339 dpdt.SetLinearForm(v2d.X(),d1u1,v2d.Y(),d1v1);
340 p1p2 = gp_Vec(pts1,pts2);
341 D(1,1) = dpdt.Dot(nplan);
342 D(1,2) = dnplan.XYZ().Dot(pts1.XYZ()-ptcur.XYZ()) - normtgcur;
347 D(2,2) = dnplan.XYZ().Dot(pts2.XYZ()-ptcur.XYZ()) - normtgcur;
348 D(2,3) = d1u2.Dot(nplan);
349 D(2,4) = d1v2.Dot(nplan);
353 surf1->D2(X(3),X(4),pts1,d1u1,d1v1,d2u1,d2v1,d2uv1);
354 surf2->D2(p2d.X(),p2d.Y(),pts2,d1u2,d1v2,d2u2,d2v2,d2uv2);
355 dpdt.SetLinearForm(v2d.X(),d1u2,v2d.Y(),d1v2);
356 p1p2 = gp_Vec(pts1,pts2);
358 D(1,2) = dnplan.XYZ().Dot(pts1.XYZ()-ptcur.XYZ()) - normtgcur;
359 D(1,3) = d1u1.Dot(nplan);
360 D(1,4) = d1v1.Dot(nplan);
362 D(2,1) = dpdt.Dot(nplan);
363 D(2,2) = dnplan.XYZ().Dot(pts2.XYZ()-ptcur.XYZ()) - normtgcur;
368 const gp_Vec ns1 = d1u1.Crossed(d1v1);
369 const gp_Vec ns2 = d1u2.Crossed(d1v2);
370 const gp_Vec ncrossns1 = nplan.Crossed(ns1);
371 const gp_Vec ncrossns2 = nplan.Crossed(ns2);
372 const Standard_Real norm1 = ncrossns1.Magnitude();
373 const Standard_Real norm2 = ncrossns2.Magnitude();
375 const Standard_Real ndotns1 = nplan.Dot(ns1);
376 const Standard_Real ndotns2 = nplan.Dot(ns2);
379 nor1.SetLinearForm(ndotns1/norm1,nplan,-1./norm1,ns1);
380 nor2.SetLinearForm(ndotns2/norm2,nplan,-1./norm2,ns2);
382 F(1) = (nplan.Dot(pts1.XYZ())) + theD;
383 F(2) = (nplan.Dot(pts2.XYZ())) + theD;
385 F(3) = p1p2.Dot(nor1);
386 F(4) = p1p2.Dot(nor2);
389 D(3,3) = d1u2.Dot(nor1);
390 D(3,4) = d1v2.Dot(nor1);
392 D(4,1) = -(dpdt.Dot(nor2));
395 D(3,1) = dpdt.Dot(nor1);
397 D(4,3) = -(d1u1.Dot(nor2));
398 D(4,4) = -(d1v1.Dot(nor2));
401 gp_Vec resul1,resul2,temp;
402 Standard_Real grosterme;
404 // Derivee de nor1 par rapport a u1
406 temp = d2u1.Crossed(d1v1).Added(d1u1.Crossed(d2uv1));
407 grosterme = ncrossns1.Dot(nplan.Crossed(temp))/norm1/norm1;
408 resul1.SetLinearForm(-(grosterme*ndotns1-nplan.Dot(temp))/norm1,nplan,
412 // Derivee par rapport a v1
414 temp = d2uv1.Crossed(d1v1).Added(d1u1.Crossed(d2v1));
415 grosterme = ncrossns1.Dot(nplan.Crossed(temp))/norm1/norm1;
416 resul2.SetLinearForm(-(grosterme*ndotns1-nplan.Dot(temp))/norm1,nplan,
421 resul1.SetLinearForm(v2d.X(),resul1,v2d.Y(),resul2);
422 D(3,1) = p1p2.Dot(resul1) - (dpdt.Dot(nor1));
425 D(3,3) = -(d1u1.Dot(nor1)) + p1p2.Dot(resul1);
426 D(3,4) = -(d1v1.Dot(nor1)) + p1p2.Dot(resul2);
429 // Derivee de nor2 par rapport a u2
430 temp = d2u2.Crossed(d1v2).Added(d1u2.Crossed(d2uv2));
431 grosterme = ncrossns2.Dot(nplan.Crossed(temp))/norm2/norm2;
432 resul1.SetLinearForm(-(grosterme*ndotns2-nplan.Dot(temp))/norm2,nplan,
436 // Derivee par rapport a v2
437 temp = d2uv2.Crossed(d1v2).Added(d1u2.Crossed(d2v2));
438 grosterme = ncrossns2.Dot(nplan.Crossed(temp))/norm2/norm2;
439 resul2.SetLinearForm(-(grosterme*ndotns2-nplan.Dot(temp))/norm2,nplan,
444 D(4,3) = d1u2.Dot(nor2) + p1p2.Dot(resul1);
445 D(4,4) = d1v2.Dot(nor2) + p1p2.Dot(resul2);
448 resul1.SetLinearForm(v2d.X(),resul1,v2d.Y(),resul2);
449 D(4,1) = p1p2.Dot(resul1) + dpdt.Dot(nor2) ;
453 // derivee par rapport a w (parametre sur ligne guide)
455 grosterme = ncrossns1.Dot(dnplan.Crossed(ns1))/norm1/norm1;
456 resul1.SetLinearForm(-(grosterme*ndotns1-dnplan.Dot(ns1))/norm1,nplan,
457 ndotns1/norm1,dnplan,
458 grosterme/norm1,ns1);
461 grosterme = ncrossns2.Dot(dnplan.Crossed(ns2))/norm2/norm2;
462 resul2.SetLinearForm(-(grosterme*ndotns2-dnplan.Dot(ns2))/norm2,nplan,
463 ndotns2/norm2,dnplan,
464 grosterme/norm2,ns2);
466 D(3,2) = p1p2.Dot(resul1);
467 D(4,2) = p1p2.Dot(resul2);
469 return Standard_True;