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b311480e | 1 | // Created on: 1993-07-07 |
2 | // Created by: Remi LEQUETTE | |
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 | |
17 | #include <BRep_Tool.ixx> | |
18 | #include <BRep_TFace.hxx> | |
19 | #include <BRep_TEdge.hxx> | |
20 | #include <BRep_TVertex.hxx> | |
21 | #include <BRep_CurveRepresentation.hxx> | |
22 | #include <BRep_CurveOnSurface.hxx> | |
23 | #include <BRep_CurveOnClosedSurface.hxx> | |
24 | #include <BRep_ListIteratorOfListOfCurveRepresentation.hxx> | |
25 | #include <BRep_PointRepresentation.hxx> | |
26 | #include <BRep_ListIteratorOfListOfPointRepresentation.hxx> | |
27 | #include <BRep_Curve3D.hxx> | |
28 | #include <BRep_Polygon3D.hxx> | |
29 | #include <BRep_PolygonOnSurface.hxx> | |
30 | #include <BRep_PolygonOnClosedSurface.hxx> | |
31 | #include <BRep_PolygonOnTriangulation.hxx> | |
32 | #include <BRep_PolygonOnClosedTriangulation.hxx> | |
33 | #include <TopoDS.hxx> | |
34 | #include <TopoDS_Iterator.hxx> | |
ab860031 | 35 | #include <TopoDS_Wire.hxx> |
7fd59977 | 36 | #include <TopExp_Explorer.hxx> |
37 | #include <TopExp.hxx> | |
38 | #include <TopTools_MapOfShape.hxx> | |
39 | #include <ElSLib.hxx> | |
40 | #include <Geom_Plane.hxx> | |
41 | #include <Geom_RectangularTrimmedSurface.hxx> | |
42 | #include <Geom_OffsetSurface.hxx> | |
43 | #include <Geom_TrimmedCurve.hxx> | |
44 | #include <Geom2d_TrimmedCurve.hxx> | |
45 | #include <ProjLib_ProjectedCurve.hxx> | |
46 | #include <GeomProjLib.hxx> | |
47 | #include <Geom2dAdaptor.hxx> | |
48 | #include <GeomAdaptor_HCurve.hxx> | |
49 | #include <GeomAdaptor_HSurface.hxx> | |
50 | #include <Precision.hxx> | |
51 | #include <Poly_Triangulation.hxx> | |
52 | #include <Poly_Polygon3D.hxx> | |
53 | #include <Poly_Polygon2D.hxx> | |
54 | #include <Poly_PolygonOnTriangulation.hxx> | |
55 | ||
ab860031 | 56 | #include <NCollection_Map.hxx> |
57 | #include <NCollection_IncAllocator.hxx> | |
58 | #include <TopTools_ShapeMapHasher.hxx> | |
59 | ||
7fd59977 | 60 | //modified by NIZNHY-PKV Fri Oct 17 14:13:29 2008f |
61 | static | |
62 | Standard_Boolean IsPlane(const Handle(Geom_Surface)& aS); | |
63 | //modified by NIZNHY-PKV Fri Oct 17 14:13:33 2008t | |
64 | // | |
65 | //======================================================================= | |
66 | //function : Surface | |
67 | //purpose : Returns the geometric surface of the face. Returns | |
68 | // in <L> the location for the surface. | |
69 | //======================================================================= | |
70 | ||
71 | const Handle(Geom_Surface)& BRep_Tool::Surface(const TopoDS_Face& F, | |
703a6abd | 72 | TopLoc_Location& L) |
7fd59977 | 73 | { |
74 | Handle(BRep_TFace)& TF = *((Handle(BRep_TFace)*) &F.TShape()); | |
75 | L = F.Location() * TF->Location(); | |
76 | return TF->Surface(); | |
77 | } | |
78 | ||
79 | //======================================================================= | |
80 | //function : Surface | |
81 | //purpose : Returns the geometric surface of the face. It can | |
82 | // be a copy if there is a Location. | |
83 | //======================================================================= | |
84 | ||
85 | Handle(Geom_Surface) BRep_Tool::Surface(const TopoDS_Face& F) | |
86 | { | |
87 | Handle(BRep_TFace)& TF = *((Handle(BRep_TFace)*) &F.TShape()); | |
88 | TopLoc_Location L = F.Location() * TF->Location(); | |
89 | Handle(Geom_Surface) S = TF->Surface(); | |
90 | ||
91 | if(S.IsNull()) return S; | |
92 | ||
93 | Handle(Geom_Geometry) S1; | |
94 | if (!L.IsIdentity()) { | |
95 | S1 = S->Copy(); | |
c5f3a425 | 96 | S = Handle(Geom_Surface)::DownCast (S1); |
7fd59977 | 97 | S->Transform(L.Transformation()); |
98 | } | |
99 | return S; | |
100 | } | |
101 | ||
102 | //======================================================================= | |
103 | //function : Triangulation | |
104 | //purpose : Returns the Triangulation of the face. It is a | |
105 | // null handle if there is no triangulation. | |
106 | //======================================================================= | |
107 | ||
108 | const Handle(Poly_Triangulation)& | |
109 | BRep_Tool::Triangulation(const TopoDS_Face& F, | |
703a6abd | 110 | TopLoc_Location& L) |
7fd59977 | 111 | { |
112 | L = F.Location(); | |
113 | return (*((Handle(BRep_TFace)*)&F.TShape()))->Triangulation(); | |
114 | } | |
115 | ||
116 | //======================================================================= | |
117 | //function : Tolerance | |
118 | //purpose : Returns the tolerance of the face. | |
119 | //======================================================================= | |
120 | ||
121 | Standard_Real BRep_Tool::Tolerance(const TopoDS_Face& F) | |
122 | { | |
123 | Standard_Real p = (*((Handle(BRep_TFace)*)&F.TShape()))->Tolerance(); | |
124 | Standard_Real pMin = Precision::Confusion(); | |
125 | if (p > pMin) return p; | |
126 | else return pMin; | |
127 | } | |
128 | ||
129 | //======================================================================= | |
130 | //function : NaturalRestriction | |
131 | //purpose : Returns the NaturalRestriction flag of the face. | |
132 | //======================================================================= | |
133 | ||
134 | Standard_Boolean BRep_Tool::NaturalRestriction(const TopoDS_Face& F) | |
135 | { | |
136 | return (*((Handle(BRep_TFace)*) &F.TShape()))->NaturalRestriction(); | |
137 | } | |
138 | ||
139 | //======================================================================= | |
140 | //function : Curve | |
141 | //purpose : Returns the 3D curve of the edge. May be a Null | |
142 | // handle. Returns in <L> the location for the curve. | |
143 | // In <First> and <Last> the parameter range. | |
144 | //======================================================================= | |
145 | ||
2b442de5 | 146 | static const Handle(Geom_Curve) nullCurve; |
7fd59977 | 147 | |
148 | const Handle(Geom_Curve)& BRep_Tool::Curve(const TopoDS_Edge& E, | |
703a6abd O |
149 | TopLoc_Location& L, |
150 | Standard_Real& First, | |
151 | Standard_Real& Last) | |
7fd59977 | 152 | { |
153 | // find the representation | |
154 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
155 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
156 | ||
157 | while (itcr.More()) { | |
158 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
159 | if (cr->IsCurve3D()) { | |
c5f3a425 | 160 | Handle(BRep_Curve3D) GC (Handle(BRep_Curve3D)::DownCast (cr)); |
7fd59977 | 161 | L = E.Location() * GC->Location(); |
162 | GC->Range(First,Last); | |
163 | return GC->Curve3D(); | |
164 | } | |
165 | itcr.Next(); | |
166 | } | |
167 | L.Identity(); | |
168 | return nullCurve; | |
169 | } | |
170 | ||
171 | //======================================================================= | |
172 | //function : Curve | |
173 | //purpose : Returns the 3D curve of the edge. May be a Null handle. | |
174 | // In <First> and <Last> the parameter range. | |
175 | // It can be a copy if there is a Location. | |
176 | //======================================================================= | |
177 | ||
178 | Handle(Geom_Curve) BRep_Tool::Curve(const TopoDS_Edge& E, | |
703a6abd O |
179 | Standard_Real& First, |
180 | Standard_Real& Last) | |
7fd59977 | 181 | { |
182 | TopLoc_Location L; | |
183 | Handle(Geom_Curve) C = Curve(E,L,First,Last); | |
184 | if ( !C.IsNull() ) { | |
185 | Handle(Geom_Geometry) C1; | |
186 | if ( !L.IsIdentity() ) { | |
187 | C1 = C->Copy(); | |
c5f3a425 | 188 | C = Handle(Geom_Curve)::DownCast (C1); |
7fd59977 | 189 | C->Transform(L.Transformation()); |
190 | } | |
191 | } | |
192 | return C; | |
193 | } | |
194 | ||
195 | //======================================================================= | |
196 | //function : IsGeometric | |
197 | //purpose : Returns True if <E> is a 3d curve or a curve on | |
198 | // surface. | |
199 | //======================================================================= | |
200 | ||
201 | Standard_Boolean BRep_Tool::IsGeometric(const TopoDS_Edge& E) | |
202 | { | |
203 | // find the representation | |
204 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
205 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
206 | ||
207 | while (itcr.More()) { | |
208 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
209 | if (cr->IsCurve3D()) { | |
210 | Standard_Real first, last; | |
211 | TopLoc_Location L; | |
212 | const Handle(Geom_Curve)& C = BRep_Tool::Curve(E, L, first, last); | |
213 | if (!C.IsNull()) return Standard_True; | |
214 | } | |
215 | else if (cr->IsCurveOnSurface()) return Standard_True; | |
216 | itcr.Next(); | |
217 | } | |
218 | return Standard_False; | |
219 | } | |
220 | ||
221 | //======================================================================= | |
222 | //function : Polygon3D | |
223 | //purpose : Returns the 3D polygon of the edge. May be a Null | |
224 | // handle. Returns in <L> the location for the polygon. | |
225 | //======================================================================= | |
226 | ||
2b442de5 S |
227 | static const Handle(Poly_Polygon3D) nullPolygon3D; |
228 | ||
7fd59977 | 229 | const Handle(Poly_Polygon3D)& BRep_Tool::Polygon3D(const TopoDS_Edge& E, |
703a6abd | 230 | TopLoc_Location& L) |
7fd59977 | 231 | { |
232 | // find the representation | |
233 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
234 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
235 | ||
236 | while (itcr.More()) { | |
237 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
238 | if (cr->IsPolygon3D()) { | |
c5f3a425 | 239 | Handle(BRep_Polygon3D) GC (Handle(BRep_Polygon3D)::DownCast (cr)); |
7fd59977 | 240 | L = E.Location() * GC->Location(); |
241 | return GC->Polygon3D(); | |
242 | } | |
243 | itcr.Next(); | |
244 | } | |
245 | L.Identity(); | |
246 | return nullPolygon3D; | |
247 | } | |
248 | ||
249 | //======================================================================= | |
250 | //function : CurveOnSurface | |
251 | //purpose : Returns the curve associated to the edge in the | |
252 | // parametric space of the face. Returns a NULL | |
253 | // handle if this curve does not exist. Returns in | |
254 | // <First> and <Last> the parameter range. | |
255 | //======================================================================= | |
256 | ||
257 | Handle(Geom2d_Curve) BRep_Tool::CurveOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
258 | const TopoDS_Face& F, |
259 | Standard_Real& First, | |
260 | Standard_Real& Last) | |
7fd59977 | 261 | { |
262 | TopLoc_Location l; | |
263 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,l); | |
264 | TopoDS_Edge aLocalEdge = E; | |
265 | if (F.Orientation() == TopAbs_REVERSED) { | |
266 | aLocalEdge.Reverse(); | |
267 | // return CurveOnSurface(E,S,l,First,Last); | |
268 | } | |
269 | // return CurveOnSurface(TopoDS::Edge(E.Reversed()),S,l,First,Last); | |
270 | // else | |
271 | // return CurveOnSurface(E,S,l,First,Last); | |
272 | return CurveOnSurface(aLocalEdge,S,l,First,Last); | |
273 | } | |
274 | ||
275 | //======================================================================= | |
276 | //function : CurveOnSurface | |
277 | //purpose : Returns the curve associated to the edge in the | |
278 | // parametric space of the surface. Returns a NULL | |
279 | // handle if this curve does not exist. Returns in | |
280 | // <First> and <Last> the parameter range. | |
281 | //======================================================================= | |
282 | ||
2b442de5 | 283 | static const Handle(Geom2d_Curve) nullPCurve; |
7fd59977 | 284 | |
285 | Handle(Geom2d_Curve) BRep_Tool::CurveOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
286 | const Handle(Geom_Surface)& S, |
287 | const TopLoc_Location& L, | |
288 | Standard_Real& First, | |
289 | Standard_Real& Last) | |
7fd59977 | 290 | { |
291 | TopLoc_Location loc = L.Predivided(E.Location()); | |
292 | Standard_Boolean Eisreversed = (E.Orientation() == TopAbs_REVERSED); | |
293 | ||
294 | // find the representation | |
295 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
296 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
297 | ||
298 | while (itcr.More()) { | |
299 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
300 | if (cr->IsCurveOnSurface(S,loc)) { | |
c5f3a425 | 301 | Handle(BRep_GCurve) GC (Handle(BRep_GCurve)::DownCast (cr)); |
7fd59977 | 302 | GC->Range(First,Last); |
303 | if (GC->IsCurveOnClosedSurface() && Eisreversed) | |
703a6abd | 304 | return GC->PCurve2(); |
7fd59977 | 305 | else |
703a6abd | 306 | return GC->PCurve(); |
7fd59977 | 307 | } |
308 | itcr.Next(); | |
309 | } | |
7fd59977 | 310 | |
311 | // for planar surface and 3d curve try a projection | |
312 | // modif 21-05-97 : for RectangularTrimmedSurface, try a projection | |
313 | Handle(Geom_Plane) GP; | |
314 | Handle(Geom_RectangularTrimmedSurface) GRTS; | |
315 | GRTS = Handle(Geom_RectangularTrimmedSurface)::DownCast(S); | |
316 | if(!GRTS.IsNull()) | |
317 | GP = Handle(Geom_Plane)::DownCast(GRTS->BasisSurface()); | |
318 | else | |
319 | GP = Handle(Geom_Plane)::DownCast(S); | |
320 | //fin modif du 21-05-97 | |
321 | ||
bdd1223f | 322 | if (!GP.IsNull()) |
323 | { | |
703a6abd O |
324 | Handle(GeomAdaptor_HCurve) HC; |
325 | Handle(GeomAdaptor_HSurface) HS; | |
326 | ||
327 | HC = new GeomAdaptor_HCurve(); | |
328 | HS = new GeomAdaptor_HSurface(); | |
7fd59977 | 329 | |
bdd1223f | 330 | TopLoc_Location aCurveLocation; |
7fd59977 | 331 | |
0d969553 | 332 | Standard_Real f, l;// for those who call with (u,u). |
bdd1223f | 333 | Handle(Geom_Curve) C3d = BRep_Tool::Curve(E, aCurveLocation, f, l); |
7fd59977 | 334 | |
bdd1223f | 335 | if (C3d.IsNull()) |
336 | { | |
337 | return nullPCurve; | |
338 | } | |
7fd59977 | 339 | |
b7723347 | 340 | aCurveLocation = aCurveLocation.Predivided(L); |
341 | First = f; Last = l; //Range of edge must not be modified | |
7fd59977 | 342 | |
bdd1223f | 343 | if (!aCurveLocation.IsIdentity()) |
344 | { | |
345 | const gp_Trsf& T = aCurveLocation.Transformation(); | |
b7723347 | 346 | Handle(Geom_Geometry) GC3d = C3d->Transformed(T); |
c5f3a425 | 347 | C3d = Handle(Geom_Curve)::DownCast (GC3d); |
b7723347 | 348 | f = C3d->TransformedParameter(f, T); |
349 | l = C3d->TransformedParameter(l, T); | |
7fd59977 | 350 | } |
351 | GeomAdaptor_Surface& GAS = HS->ChangeSurface(); | |
b7723347 | 352 | GAS.Load(GP); |
bdd1223f | 353 | |
7fd59977 | 354 | Handle(Geom_Curve) ProjOnPlane = |
8ac0cf52 | 355 | GeomProjLib::ProjectOnPlane(new Geom_TrimmedCurve(C3d,f,l,Standard_True,Standard_False), |
b7723347 | 356 | GP, |
357 | GP->Position().Direction(), | |
703a6abd | 358 | Standard_True); |
bdd1223f | 359 | |
7fd59977 | 360 | GeomAdaptor_Curve& GAC = HC->ChangeCurve(); |
361 | GAC.Load(ProjOnPlane); | |
362 | ||
363 | ProjLib_ProjectedCurve Proj(HS,HC); | |
364 | Handle(Geom2d_Curve) pc = Geom2dAdaptor::MakeCurve(Proj); | |
365 | ||
366 | if (pc->DynamicType() == STANDARD_TYPE(Geom2d_TrimmedCurve)) { | |
367 | Handle(Geom2d_TrimmedCurve) TC = | |
c5f3a425 | 368 | Handle(Geom2d_TrimmedCurve)::DownCast (pc); |
7fd59977 | 369 | pc = TC->BasisCurve(); |
370 | } | |
b7723347 | 371 | |
7fd59977 | 372 | return pc; |
373 | } | |
374 | ||
375 | return nullPCurve; | |
376 | } | |
377 | ||
378 | //======================================================================= | |
379 | //function : CurveOnSurface | |
380 | //purpose : | |
381 | //======================================================================= | |
382 | ||
383 | void BRep_Tool::CurveOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
384 | Handle(Geom2d_Curve)& C, |
385 | Handle(Geom_Surface)& S, | |
386 | TopLoc_Location& L, | |
387 | Standard_Real& First, | |
388 | Standard_Real& Last) | |
7fd59977 | 389 | { |
390 | // find the representation | |
391 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
392 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
393 | ||
394 | while (itcr.More()) { | |
395 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
396 | if (cr->IsCurveOnSurface()) { | |
c5f3a425 | 397 | Handle(BRep_GCurve) GC (Handle(BRep_GCurve)::DownCast (cr)); |
7fd59977 | 398 | C = GC->PCurve(); |
399 | S = GC->Surface(); | |
400 | L = E.Location() * GC->Location(); | |
401 | GC->Range(First,Last); | |
402 | return; | |
403 | } | |
404 | itcr.Next(); | |
405 | } | |
406 | ||
407 | C = Handle(Geom2d_Curve)(); | |
408 | S = Handle(Geom_Surface)(); | |
409 | L = TopLoc_Location(); | |
410 | } | |
411 | ||
412 | //======================================================================= | |
413 | //function : CurveOnSurface | |
414 | //purpose : | |
415 | //======================================================================= | |
416 | ||
417 | void BRep_Tool::CurveOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
418 | Handle(Geom2d_Curve)& C, |
419 | Handle(Geom_Surface)& S, | |
420 | TopLoc_Location& L, | |
421 | Standard_Real& First, | |
422 | Standard_Real& Last, | |
423 | const Standard_Integer Index) | |
7fd59977 | 424 | { |
425 | Standard_Integer i = 0; | |
426 | Standard_Boolean Eisreversed = (E.Orientation() == TopAbs_REVERSED); | |
427 | ||
428 | // find the representation | |
429 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
430 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
431 | ||
432 | while (itcr.More()) { | |
433 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
434 | if (cr->IsCurveOnSurface()) { | |
c5f3a425 | 435 | Handle(BRep_GCurve) GC (Handle(BRep_GCurve)::DownCast (cr)); |
7fd59977 | 436 | i++; |
437 | if (i > Index) break; | |
438 | if (i == Index) { | |
703a6abd | 439 | // JMB le 21 Mai 1999 |
0d969553 Y |
440 | // it is done as in the other CurveOnSurface methods, ie. take into account |
441 | // the orientation in case of cut edges (return PCurve2) | |
442 | // otherwise there is a risk to loop curves or to not get the prover one. | |
703a6abd O |
443 | if (GC->IsCurveOnClosedSurface() && Eisreversed) |
444 | C = GC->PCurve2(); | |
445 | else | |
446 | C = GC->PCurve(); | |
447 | S = GC->Surface(); | |
448 | L = E.Location() * GC->Location(); | |
449 | GC->Range(First,Last); | |
450 | return; | |
7fd59977 | 451 | } |
452 | } | |
453 | itcr.Next(); | |
454 | } | |
455 | ||
456 | C = Handle(Geom2d_Curve)(); | |
457 | S = Handle(Geom_Surface)(); | |
458 | L = TopLoc_Location(); | |
459 | } | |
460 | ||
461 | //======================================================================= | |
462 | //function : PolygonOnSurface | |
463 | //purpose : Returns the polygon associated to the edge in the | |
464 | // parametric space of the face. Returns a NULL | |
465 | // handle if this polygon does not exist. | |
466 | //======================================================================= | |
467 | ||
468 | Handle(Poly_Polygon2D) BRep_Tool::PolygonOnSurface(const TopoDS_Edge& E, | |
703a6abd | 469 | const TopoDS_Face& F) |
7fd59977 | 470 | { |
471 | TopLoc_Location l; | |
472 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,l); | |
473 | TopoDS_Edge aLocalEdge = E; | |
474 | if (F.Orientation() == TopAbs_REVERSED) { | |
475 | aLocalEdge.Reverse(); | |
476 | // return PolygonOnSurface(E,S,l); | |
477 | } | |
478 | // return PolygonOnSurface(TopoDS::Edge(E.Reversed()),S,l); | |
479 | // else | |
480 | // return PolygonOnSurface(E,S,l); | |
481 | return PolygonOnSurface(aLocalEdge,S,l); | |
482 | } | |
483 | ||
484 | //======================================================================= | |
485 | //function : PolygonOnSurface | |
486 | //purpose : Returns the polygon associated to the edge in the | |
487 | // parametric space of the surface. Returns a NULL | |
488 | // handle if this polygon does not exist. | |
489 | //======================================================================= | |
490 | ||
2b442de5 | 491 | static const Handle(Poly_Polygon2D) nullPolygon2D; |
7fd59977 | 492 | |
493 | Handle(Poly_Polygon2D) | |
494 | BRep_Tool::PolygonOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
495 | const Handle(Geom_Surface)& S, |
496 | const TopLoc_Location& L) | |
7fd59977 | 497 | { |
498 | TopLoc_Location l = L.Predivided(E.Location()); | |
499 | Standard_Boolean Eisreversed = (E.Orientation() == TopAbs_REVERSED); | |
500 | ||
501 | // find the representation | |
502 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
503 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
504 | ||
505 | while (itcr.More()) { | |
506 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
507 | if (cr->IsPolygonOnSurface(S,l)) { | |
508 | if (cr->IsPolygonOnClosedSurface() && Eisreversed ) | |
703a6abd | 509 | return cr->Polygon2(); |
7fd59977 | 510 | else |
703a6abd | 511 | return cr->Polygon(); |
7fd59977 | 512 | } |
513 | itcr.Next(); | |
514 | } | |
515 | ||
516 | return nullPolygon2D; | |
517 | } | |
518 | ||
519 | //======================================================================= | |
520 | //function : PolygonOnSurface | |
521 | //purpose : | |
522 | //======================================================================= | |
523 | ||
524 | void BRep_Tool::PolygonOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
525 | Handle(Poly_Polygon2D)& P, |
526 | Handle(Geom_Surface)& S, | |
527 | TopLoc_Location& L) | |
7fd59977 | 528 | { |
529 | // find the representation | |
530 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
531 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
532 | ||
533 | while (itcr.More()) { | |
534 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
535 | if (cr->IsPolygonOnSurface()) { | |
c5f3a425 | 536 | Handle(BRep_PolygonOnSurface) PS (Handle(BRep_PolygonOnSurface)::DownCast (cr)); |
7fd59977 | 537 | P = PS->Polygon(); |
538 | S = PS->Surface(); | |
539 | L = E.Location() * PS->Location(); | |
540 | return; | |
541 | } | |
542 | itcr.Next(); | |
543 | } | |
544 | ||
545 | L = TopLoc_Location(); | |
546 | P = Handle(Poly_Polygon2D)(); | |
547 | S = Handle(Geom_Surface)(); | |
548 | } | |
549 | ||
550 | //======================================================================= | |
551 | //function : PolygonOnSurface | |
552 | //purpose : | |
553 | //======================================================================= | |
554 | ||
555 | void BRep_Tool::PolygonOnSurface(const TopoDS_Edge& E, | |
703a6abd O |
556 | Handle(Poly_Polygon2D)& P, |
557 | Handle(Geom_Surface)& S, | |
558 | TopLoc_Location& L, | |
559 | const Standard_Integer Index) | |
7fd59977 | 560 | { |
561 | Standard_Integer i = 0; | |
562 | ||
563 | // find the representation | |
564 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
565 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
566 | ||
567 | while (itcr.More()) { | |
568 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
569 | if (cr->IsPolygonOnSurface()) { | |
c5f3a425 | 570 | Handle(BRep_PolygonOnSurface) PS (Handle(BRep_PolygonOnSurface)::DownCast (cr)); |
7fd59977 | 571 | i++; |
572 | if (i > Index) break; | |
573 | if (i == Index) { | |
703a6abd O |
574 | P = PS->Polygon(); |
575 | S = PS->Surface(); | |
576 | L = E.Location() * PS->Location(); | |
577 | return; | |
7fd59977 | 578 | } |
579 | } | |
580 | itcr.Next(); | |
581 | } | |
582 | ||
583 | L = TopLoc_Location(); | |
584 | P = Handle(Poly_Polygon2D)(); | |
585 | S = Handle(Geom_Surface)(); | |
586 | } | |
587 | ||
588 | //======================================================================= | |
589 | //function : PolygonOnTriangulation | |
590 | //purpose : Returns the polygon associated to the edge in the | |
591 | // parametric space of the face. Returns a NULL | |
592 | // handle if this polygon does not exist. | |
593 | //======================================================================= | |
594 | ||
2b442de5 | 595 | static const Handle(Poly_PolygonOnTriangulation) nullArray; |
7fd59977 | 596 | |
597 | const Handle(Poly_PolygonOnTriangulation)& | |
598 | BRep_Tool::PolygonOnTriangulation(const TopoDS_Edge& E, | |
703a6abd O |
599 | const Handle(Poly_Triangulation)& T, |
600 | const TopLoc_Location& L) | |
7fd59977 | 601 | { |
602 | TopLoc_Location l = L.Predivided(E.Location()); | |
603 | Standard_Boolean Eisreversed = (E.Orientation() == TopAbs_REVERSED); | |
604 | ||
605 | // find the representation | |
606 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
607 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
608 | ||
609 | while (itcr.More()) { | |
610 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
611 | if ( cr->IsPolygonOnTriangulation(T,l)) { | |
612 | if ( cr->IsPolygonOnClosedTriangulation() && Eisreversed ) | |
703a6abd | 613 | return cr->PolygonOnTriangulation2(); |
7fd59977 | 614 | else |
703a6abd | 615 | return cr->PolygonOnTriangulation(); |
7fd59977 | 616 | } |
617 | itcr.Next(); | |
618 | } | |
619 | ||
620 | return nullArray; | |
621 | } | |
622 | ||
623 | //======================================================================= | |
624 | //function : PolygonOnTriangulation | |
625 | //purpose : | |
626 | //======================================================================= | |
627 | ||
628 | void | |
629 | BRep_Tool::PolygonOnTriangulation(const TopoDS_Edge& E, | |
703a6abd O |
630 | Handle(Poly_PolygonOnTriangulation)& P, |
631 | Handle(Poly_Triangulation)& T, | |
632 | TopLoc_Location& L) | |
7fd59977 | 633 | { |
634 | // find the representation | |
635 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
636 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
637 | ||
638 | while (itcr.More()) { | |
639 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
640 | if (cr->IsPolygonOnTriangulation()) { | |
c5f3a425 | 641 | Handle(BRep_PolygonOnTriangulation) PT (Handle(BRep_PolygonOnTriangulation)::DownCast (cr)); |
7fd59977 | 642 | P = PT->PolygonOnTriangulation(); |
643 | T = PT->Triangulation(); | |
644 | L = E.Location() * PT->Location(); | |
645 | return; | |
646 | } | |
647 | itcr.Next(); | |
648 | } | |
649 | ||
650 | L = TopLoc_Location(); | |
651 | P = Handle(Poly_PolygonOnTriangulation)(); | |
652 | T = Handle(Poly_Triangulation)(); | |
653 | } | |
654 | ||
655 | //======================================================================= | |
656 | //function : PolygonOnTriangulation | |
657 | //purpose : | |
658 | //======================================================================= | |
659 | ||
660 | void | |
661 | BRep_Tool::PolygonOnTriangulation(const TopoDS_Edge& E, | |
703a6abd O |
662 | Handle(Poly_PolygonOnTriangulation)& P, |
663 | Handle(Poly_Triangulation)& T, | |
664 | TopLoc_Location& L, | |
665 | const Standard_Integer Index) | |
7fd59977 | 666 | { |
667 | Standard_Integer i = 0; | |
668 | ||
669 | // find the representation | |
670 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
671 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
672 | ||
673 | while (itcr.More()) { | |
674 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
675 | if (cr->IsPolygonOnTriangulation()) { | |
c5f3a425 | 676 | Handle(BRep_PolygonOnTriangulation) PT (Handle(BRep_PolygonOnTriangulation)::DownCast (cr)); |
7fd59977 | 677 | i++; |
678 | if (i > Index) break; | |
679 | if (i == Index) { | |
703a6abd O |
680 | T = PT->Triangulation(); |
681 | P = PT->PolygonOnTriangulation(); | |
682 | L = E.Location() * PT->Location(); | |
683 | return; | |
7fd59977 | 684 | } |
685 | } | |
686 | itcr.Next(); | |
687 | } | |
688 | ||
689 | L = TopLoc_Location(); | |
690 | P = Handle(Poly_PolygonOnTriangulation)(); | |
691 | T = Handle(Poly_Triangulation)(); | |
692 | } | |
693 | ||
694 | //======================================================================= | |
695 | //function : IsClosed | |
696 | //purpose : Returns True if <E> has two PCurves in the | |
697 | // parametric space of <F>. i.e. <F> is on a closed | |
698 | // surface and <E> is on the closing curve. | |
699 | //======================================================================= | |
700 | ||
701 | Standard_Boolean BRep_Tool::IsClosed(const TopoDS_Edge& E, | |
703a6abd | 702 | const TopoDS_Face& F) |
7fd59977 | 703 | { |
704 | TopLoc_Location l; | |
705 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,l); | |
706 | if (IsClosed(E,S,l)) return Standard_True; | |
ff0a70a1 | 707 | const Handle(Poly_Triangulation)& T = BRep_Tool::Triangulation(F,l); |
708 | return IsClosed(E, T, l); | |
7fd59977 | 709 | } |
710 | ||
711 | //======================================================================= | |
712 | //function : IsClosed | |
713 | //purpose : Returns True if <E> has two PCurves in the | |
714 | // parametric space of <S>. i.e. <S> is a closed | |
715 | // surface and <E> is on the closing curve. | |
716 | //======================================================================= | |
717 | ||
718 | Standard_Boolean BRep_Tool::IsClosed(const TopoDS_Edge& E, | |
703a6abd O |
719 | const Handle(Geom_Surface)& S, |
720 | const TopLoc_Location& L) | |
7fd59977 | 721 | { |
722 | //modified by NIZNHY-PKV Fri Oct 17 12:16:58 2008f | |
723 | if (IsPlane(S)) { | |
724 | return Standard_False; | |
725 | } | |
726 | //modified by NIZNHY-PKV Fri Oct 17 12:16:54 2008t | |
727 | // | |
728 | TopLoc_Location l = L.Predivided(E.Location()); | |
729 | ||
730 | // find the representation | |
731 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
732 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
733 | ||
734 | while (itcr.More()) { | |
735 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
736 | if (cr->IsCurveOnSurface(S,l) && | |
703a6abd | 737 | cr->IsCurveOnClosedSurface()) |
7fd59977 | 738 | return Standard_True; |
739 | itcr.Next(); | |
740 | } | |
741 | return Standard_False; | |
742 | } | |
743 | ||
744 | //======================================================================= | |
745 | //function : IsClosed | |
746 | //purpose : Returns True if <E> has two arrays of indices in | |
747 | // the triangulation <T>. | |
748 | //======================================================================= | |
749 | ||
750 | Standard_Boolean BRep_Tool::IsClosed(const TopoDS_Edge& E, | |
ff0a70a1 | 751 | const Handle(Poly_Triangulation)& T, |
752 | const TopLoc_Location& L) | |
7fd59977 | 753 | { |
ff0a70a1 | 754 | TopLoc_Location l = L.Predivided(E.Location()); |
7fd59977 | 755 | |
756 | // find the representation | |
757 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
758 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
759 | ||
760 | while (itcr.More()) { | |
761 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
762 | if (cr->IsPolygonOnTriangulation(T,l) && | |
703a6abd | 763 | cr->IsPolygonOnClosedTriangulation()) |
7fd59977 | 764 | return Standard_True; |
765 | itcr.Next(); | |
766 | } | |
767 | return Standard_False; | |
768 | } | |
769 | ||
770 | //======================================================================= | |
771 | //function : Tolerance | |
772 | //purpose : Returns the tolerance for <E>. | |
773 | //======================================================================= | |
774 | ||
775 | Standard_Real BRep_Tool::Tolerance(const TopoDS_Edge& E) | |
776 | { | |
777 | Standard_Real p = (*((Handle(BRep_TEdge)*)&E.TShape()))->Tolerance(); | |
778 | Standard_Real pMin = Precision::Confusion(); | |
779 | if (p > pMin) return p; | |
780 | else return pMin; | |
781 | } | |
782 | ||
783 | //======================================================================= | |
784 | //function : SameParameter | |
785 | //purpose : Returns the SameParameter flag for the edge. | |
786 | //======================================================================= | |
787 | ||
788 | Standard_Boolean BRep_Tool::SameParameter(const TopoDS_Edge& E) | |
789 | { | |
790 | return (*((Handle(BRep_TEdge)*)&E.TShape()))->SameParameter(); | |
791 | } | |
792 | ||
793 | //======================================================================= | |
794 | //function : SameRange | |
795 | //purpose : Returns the SameRange flag for the edge. | |
796 | //======================================================================= | |
797 | ||
798 | Standard_Boolean BRep_Tool::SameRange(const TopoDS_Edge& E) | |
799 | { | |
800 | return (*((Handle(BRep_TEdge)*)&E.TShape()))->SameRange(); | |
801 | } | |
802 | ||
803 | //======================================================================= | |
804 | //function : Degenerated | |
805 | //purpose : Returns True if the edge is degenerated. | |
806 | //======================================================================= | |
807 | ||
808 | Standard_Boolean BRep_Tool::Degenerated(const TopoDS_Edge& E) | |
809 | { | |
810 | return (*((Handle(BRep_TEdge)*)&E.TShape()))->Degenerated(); | |
811 | } | |
812 | ||
813 | //======================================================================= | |
814 | //function : Range | |
815 | //purpose : | |
816 | //======================================================================= | |
817 | ||
818 | void BRep_Tool::Range(const TopoDS_Edge& E, | |
703a6abd O |
819 | Standard_Real& First, |
820 | Standard_Real& Last) | |
7fd59977 | 821 | { |
822 | // set the range to all the representations | |
823 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
824 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
825 | ||
826 | while (itcr.More()) { | |
827 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
828 | if (cr->IsCurve3D()) { | |
c5f3a425 | 829 | Handle(BRep_Curve3D) CR (Handle(BRep_Curve3D)::DownCast (cr)); |
7fd59977 | 830 | if (!CR->Curve3D().IsNull()) { |
703a6abd O |
831 | First = CR->First(); |
832 | Last = CR->Last(); | |
833 | break; | |
7fd59977 | 834 | } |
835 | } | |
836 | else if (cr->IsCurveOnSurface()) { | |
c5f3a425 | 837 | Handle(BRep_GCurve) CR (Handle(BRep_GCurve)::DownCast (cr)); |
7fd59977 | 838 | First = CR->First(); |
839 | Last = CR->Last(); | |
840 | break; | |
841 | } | |
842 | itcr.Next(); | |
843 | } | |
844 | } | |
845 | ||
846 | //======================================================================= | |
847 | //function : Range | |
848 | //purpose : | |
849 | //======================================================================= | |
850 | ||
851 | void BRep_Tool::Range(const TopoDS_Edge& E, | |
703a6abd O |
852 | const Handle(Geom_Surface)& S, |
853 | const TopLoc_Location& L, | |
854 | Standard_Real& First, | |
855 | Standard_Real& Last) | |
7fd59977 | 856 | { |
857 | TopLoc_Location l = L.Predivided(E.Location()); | |
858 | ||
859 | // find the representation | |
860 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
861 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
862 | ||
863 | while (itcr.More()) { | |
864 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
865 | if (cr->IsCurveOnSurface(S,l)) { | |
c5f3a425 | 866 | Handle(BRep_GCurve)::DownCast (cr)->Range(First,Last); |
7fd59977 | 867 | break; |
868 | } | |
869 | itcr.Next(); | |
870 | } | |
871 | if (!itcr.More()) { | |
872 | Range(E,First,Last); | |
873 | } | |
874 | (*((Handle(BRep_TEdge)*)&E.TShape()))->Modified(Standard_True); | |
875 | } | |
876 | ||
877 | //======================================================================= | |
878 | //function : Range | |
879 | //purpose : | |
880 | //======================================================================= | |
881 | ||
882 | void BRep_Tool::Range(const TopoDS_Edge& E, | |
703a6abd O |
883 | const TopoDS_Face& F, |
884 | Standard_Real& First, | |
885 | Standard_Real& Last) | |
7fd59977 | 886 | { |
887 | TopLoc_Location L; | |
888 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,L); | |
889 | Range(E,S,L,First,Last); | |
890 | } | |
891 | ||
892 | //======================================================================= | |
893 | //function : UVPoints | |
894 | //purpose : | |
895 | //======================================================================= | |
896 | ||
897 | void BRep_Tool::UVPoints(const TopoDS_Edge& E, | |
703a6abd O |
898 | const Handle(Geom_Surface)& S, |
899 | const TopLoc_Location& L, | |
900 | gp_Pnt2d& PFirst, | |
901 | gp_Pnt2d& PLast) | |
7fd59977 | 902 | { |
903 | TopLoc_Location l = L.Predivided(E.Location()); | |
904 | Standard_Boolean Eisreversed = (E.Orientation() == TopAbs_REVERSED); | |
905 | ||
906 | // find the representation | |
907 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
908 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
909 | ||
910 | while (itcr.More()) { | |
911 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
912 | if (cr->IsCurveOnSurface(S,l)) { | |
913 | if (cr->IsCurveOnClosedSurface() && Eisreversed) | |
c5f3a425 | 914 | Handle(BRep_CurveOnClosedSurface)::DownCast (cr)->UVPoints2(PFirst,PLast); |
7fd59977 | 915 | else |
c5f3a425 | 916 | Handle(BRep_CurveOnSurface)::DownCast (cr)->UVPoints(PFirst,PLast); |
7fd59977 | 917 | return; |
918 | } | |
919 | itcr.Next(); | |
920 | } | |
921 | ||
922 | // for planar surface project the vertices | |
923 | // modif 21-05-97 : for RectangularTrimmedSurface, project the vertices | |
924 | Handle(Geom_Plane) GP; | |
925 | Handle(Geom_RectangularTrimmedSurface) GRTS; | |
926 | GRTS = Handle(Geom_RectangularTrimmedSurface)::DownCast(S); | |
927 | if(!GRTS.IsNull()) | |
928 | GP = Handle(Geom_Plane)::DownCast(GRTS->BasisSurface()); | |
929 | else | |
930 | GP = Handle(Geom_Plane)::DownCast(S); | |
931 | //fin modif du 21-05-97 | |
932 | if (!GP.IsNull()) { | |
933 | // get the two vertices | |
934 | TopoDS_Vertex Vf,Vl; | |
935 | TopExp::Vertices(E,Vf,Vl); | |
936 | ||
937 | TopLoc_Location Linverted = L.Inverted(); | |
938 | Vf.Move(Linverted); | |
939 | Vl.Move(Linverted); | |
940 | Standard_Real u,v; | |
941 | gp_Pln pln = GP->Pln(); | |
942 | ||
943 | u=v=0.; | |
944 | if (!Vf.IsNull()) { | |
945 | gp_Pnt PF = BRep_Tool::Pnt(Vf); | |
946 | ElSLib::Parameters(pln,PF,u,v); | |
947 | } | |
948 | PFirst.SetCoord(u,v); | |
949 | ||
950 | u=v=0.; | |
951 | if (!Vl.IsNull()) { | |
952 | gp_Pnt PL = BRep_Tool::Pnt(Vl); | |
953 | ElSLib::Parameters(pln,PL,u,v); | |
954 | } | |
955 | PLast.SetCoord(u,v); | |
956 | } | |
957 | } | |
958 | ||
959 | //======================================================================= | |
960 | //function : UVPoints | |
961 | //purpose : | |
962 | //======================================================================= | |
963 | ||
964 | void BRep_Tool::UVPoints(const TopoDS_Edge& E, | |
703a6abd O |
965 | const TopoDS_Face& F, |
966 | gp_Pnt2d& PFirst, | |
967 | gp_Pnt2d& PLast) | |
7fd59977 | 968 | { |
969 | TopLoc_Location L; | |
970 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,L); | |
971 | TopoDS_Edge aLocalEdge = E; | |
972 | if (F.Orientation() == TopAbs_REVERSED) { | |
973 | aLocalEdge.Reverse(); | |
974 | // UVPoints(E,S,L,PFirst,PLast); | |
975 | } | |
976 | // UVPoints(TopoDS::Edge(E.Reversed()),S,L,PFirst,PLast); | |
977 | // else | |
978 | // UVPoints(E,S,L,PFirst,PLast); | |
979 | UVPoints(aLocalEdge,S,L,PFirst,PLast); | |
980 | } | |
981 | ||
982 | //======================================================================= | |
983 | //function : SetUVPoints | |
984 | //purpose : | |
985 | //======================================================================= | |
986 | ||
987 | void BRep_Tool::SetUVPoints(const TopoDS_Edge& E, | |
703a6abd O |
988 | const Handle(Geom_Surface)& S, |
989 | const TopLoc_Location& L, | |
990 | const gp_Pnt2d& PFirst, | |
991 | const gp_Pnt2d& PLast) | |
7fd59977 | 992 | { |
993 | TopLoc_Location l = L.Predivided(E.Location()); | |
994 | Standard_Boolean Eisreversed = (E.Orientation() == TopAbs_REVERSED); | |
995 | ||
996 | // find the representation | |
997 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
998 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
999 | ||
1000 | while (itcr.More()) { | |
1001 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
1002 | if (cr->IsCurveOnSurface(S,l)) { | |
1003 | if (cr->IsCurveOnClosedSurface() && Eisreversed) | |
c5f3a425 | 1004 | Handle(BRep_CurveOnClosedSurface)::DownCast (cr)-> |
703a6abd | 1005 | SetUVPoints2(PFirst,PLast); |
7fd59977 | 1006 | else |
c5f3a425 | 1007 | Handle(BRep_CurveOnSurface)::DownCast (cr)-> |
703a6abd | 1008 | SetUVPoints(PFirst,PLast); |
7fd59977 | 1009 | } |
1010 | itcr.Next(); | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | //======================================================================= | |
1015 | //function : SetUVPoints | |
1016 | //purpose : | |
1017 | //======================================================================= | |
1018 | ||
1019 | void BRep_Tool::SetUVPoints(const TopoDS_Edge& E, | |
703a6abd O |
1020 | const TopoDS_Face& F, |
1021 | const gp_Pnt2d& PFirst, | |
1022 | const gp_Pnt2d& PLast) | |
7fd59977 | 1023 | { |
1024 | TopLoc_Location L; | |
1025 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,L); | |
1026 | TopoDS_Edge aLocalEdge = E; | |
1027 | if (F.Orientation() == TopAbs_REVERSED) { | |
1028 | aLocalEdge.Reverse(); | |
1029 | // SetUVPoints(TopoDS::Edge(E.Reversed()),S,L,PFirst,PLast); | |
1030 | } | |
1031 | // else | |
1032 | // SetUVPoints(E,S,L,PFirst,PLast); | |
1033 | SetUVPoints(aLocalEdge,S,L,PFirst,PLast); | |
1034 | } | |
1035 | ||
1036 | //======================================================================= | |
1037 | //function : HasContinuity | |
1038 | //purpose : Returns True if the edge is on the surfaces of the | |
1039 | // two faces. | |
1040 | //======================================================================= | |
1041 | ||
1042 | Standard_Boolean BRep_Tool::HasContinuity(const TopoDS_Edge& E, | |
703a6abd O |
1043 | const TopoDS_Face& F1, |
1044 | const TopoDS_Face& F2) | |
7fd59977 | 1045 | { |
1046 | TopLoc_Location l1,l2; | |
1047 | const Handle(Geom_Surface)& S1 = BRep_Tool::Surface(F1,l1); | |
1048 | const Handle(Geom_Surface)& S2 = BRep_Tool::Surface(F2,l2); | |
1049 | return HasContinuity(E,S1,S2,l1,l2); | |
1050 | } | |
1051 | ||
1052 | //======================================================================= | |
1053 | //function : Continuity | |
1054 | //purpose : Returns the continuity. | |
1055 | //======================================================================= | |
1056 | ||
1057 | GeomAbs_Shape BRep_Tool::Continuity(const TopoDS_Edge& E, | |
703a6abd O |
1058 | const TopoDS_Face& F1, |
1059 | const TopoDS_Face& F2) | |
7fd59977 | 1060 | { |
1061 | TopLoc_Location l1,l2; | |
1062 | const Handle(Geom_Surface)& S1 = BRep_Tool::Surface(F1,l1); | |
1063 | const Handle(Geom_Surface)& S2 = BRep_Tool::Surface(F2,l2); | |
1064 | return Continuity(E,S1,S2,l1,l2); | |
1065 | } | |
1066 | ||
1067 | //======================================================================= | |
1068 | //function : HasContinuity | |
1069 | //purpose : Returns True if the edge is on the surfaces. | |
1070 | //======================================================================= | |
1071 | ||
1072 | Standard_Boolean BRep_Tool::HasContinuity(const TopoDS_Edge& E, | |
703a6abd O |
1073 | const Handle(Geom_Surface)& S1, |
1074 | const Handle(Geom_Surface)& S2, | |
1075 | const TopLoc_Location& L1, | |
1076 | const TopLoc_Location& L2) | |
7fd59977 | 1077 | { |
1078 | const TopLoc_Location& Eloc = E.Location(); | |
1079 | TopLoc_Location l1 = L1.Predivided(Eloc); | |
1080 | TopLoc_Location l2 = L2.Predivided(Eloc); | |
1081 | ||
1082 | // find the representation | |
1083 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
1084 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
1085 | ||
1086 | while (itcr.More()) { | |
1087 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
1088 | if (cr->IsRegularity(S1,S2,l1,l2)) | |
1089 | return Standard_True; | |
1090 | itcr.Next(); | |
1091 | } | |
1092 | return Standard_False; | |
1093 | } | |
1094 | ||
1095 | //======================================================================= | |
1096 | //function : Continuity | |
1097 | //purpose : Returns the continuity. | |
1098 | //======================================================================= | |
1099 | ||
1100 | GeomAbs_Shape BRep_Tool::Continuity(const TopoDS_Edge& E, | |
703a6abd O |
1101 | const Handle(Geom_Surface)& S1, |
1102 | const Handle(Geom_Surface)& S2, | |
1103 | const TopLoc_Location& L1, | |
1104 | const TopLoc_Location& L2) | |
7fd59977 | 1105 | { |
1106 | TopLoc_Location l1 = L1.Predivided(E.Location()); | |
1107 | TopLoc_Location l2 = L2.Predivided(E.Location()); | |
1108 | ||
1109 | // find the representation | |
1110 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
1111 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->ChangeCurves()); | |
1112 | ||
1113 | while (itcr.More()) { | |
1114 | const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); | |
1115 | if (cr->IsRegularity(S1,S2,l1,l2)) | |
1116 | return cr->Continuity(); | |
1117 | itcr.Next(); | |
1118 | } | |
1119 | return GeomAbs_C0; | |
1120 | } | |
1121 | ||
bda83605 | 1122 | //======================================================================= |
1123 | //function : HasContinuity | |
1124 | //purpose : Returns True if the edge is on some two surfaces. | |
1125 | //======================================================================= | |
1126 | ||
1127 | Standard_Boolean BRep_Tool::HasContinuity(const TopoDS_Edge& E) | |
1128 | { | |
1129 | BRep_ListIteratorOfListOfCurveRepresentation itcr | |
1130 | ((*((Handle(BRep_TEdge)*)&E.TShape()))->Curves()); | |
1131 | ||
1132 | for (; itcr.More(); itcr.Next()) | |
1133 | { | |
1134 | const Handle(BRep_CurveRepresentation)& CR = itcr.Value(); | |
1135 | if (CR->IsRegularity()) | |
1136 | return Standard_True; | |
1137 | } | |
1138 | return Standard_False; | |
1139 | } | |
1140 | ||
7fd59977 | 1141 | //======================================================================= |
1142 | //function : Pnt | |
1143 | //purpose : Returns the 3d point. | |
1144 | //======================================================================= | |
1145 | ||
1146 | gp_Pnt BRep_Tool::Pnt(const TopoDS_Vertex& V) | |
1147 | { | |
1148 | Handle(BRep_TVertex)& TV = *((Handle(BRep_TVertex)*) &V.TShape()); | |
46aed280 | 1149 | |
1150 | if (TV.IsNull()) | |
1151 | { | |
1152 | Standard_NullObject::Raise("BRep_Tool:: TopoDS_Vertex hasn't gp_Pnt"); | |
1153 | } | |
1154 | ||
7fd59977 | 1155 | gp_Pnt P = TV->Pnt(); |
1156 | P.Transform(V.Location().Transformation()); | |
1157 | return P; | |
1158 | } | |
1159 | ||
1160 | //======================================================================= | |
1161 | //function : Tolerance | |
1162 | //purpose : Returns the tolerance. | |
1163 | //======================================================================= | |
1164 | ||
1165 | Standard_Real BRep_Tool::Tolerance(const TopoDS_Vertex& V) | |
1166 | { | |
46aed280 | 1167 | Handle(BRep_TVertex)& aTVert = *((Handle(BRep_TVertex)*)&V.TShape()); |
1168 | ||
1169 | if (aTVert.IsNull()) | |
1170 | { | |
1171 | Standard_NullObject::Raise("BRep_Tool:: TopoDS_Vertex hasn't gp_Pnt"); | |
1172 | } | |
1173 | ||
1174 | Standard_Real p = aTVert->Tolerance(); | |
7fd59977 | 1175 | Standard_Real pMin = Precision::Confusion(); |
1176 | if (p > pMin) return p; | |
1177 | else return pMin; | |
1178 | } | |
1179 | ||
1180 | //======================================================================= | |
1181 | //function : Parameter | |
1182 | //purpose : Returns the parameter of <V> on <E>. | |
1183 | //======================================================================= | |
1184 | ||
1185 | Standard_Real BRep_Tool::Parameter(const TopoDS_Vertex& V, | |
703a6abd | 1186 | const TopoDS_Edge& E) |
7fd59977 | 1187 | { |
1188 | ||
1189 | // Search the vertex in the edge | |
1190 | ||
1191 | Standard_Boolean rev = Standard_False; | |
1192 | TopoDS_Shape VF; | |
1193 | TopAbs_Orientation orient = TopAbs_INTERNAL; | |
1194 | ||
1195 | TopoDS_Iterator itv(E.Oriented(TopAbs_FORWARD)); | |
1196 | ||
1197 | // if the edge has no vertices | |
1198 | // and is degenerated use the vertex orientation | |
1199 | // RLE, june 94 | |
1200 | ||
1201 | if (!itv.More() && Degenerated(E)) { | |
1202 | orient = V.Orientation(); | |
1203 | } | |
1204 | ||
1205 | while (itv.More()) { | |
1206 | const TopoDS_Shape& Vcur = itv.Value(); | |
1207 | if (V.IsSame(Vcur)) { | |
1208 | if (VF.IsNull()) { | |
703a6abd | 1209 | VF = Vcur; |
7fd59977 | 1210 | } |
1211 | else { | |
703a6abd O |
1212 | rev = E.Orientation() == TopAbs_REVERSED; |
1213 | if (Vcur.Orientation() == V.Orientation()) { | |
1214 | VF = Vcur; | |
1215 | } | |
7fd59977 | 1216 | } |
1217 | } | |
1218 | itv.Next(); | |
1219 | } | |
1220 | ||
1221 | if (!VF.IsNull()) orient = VF.Orientation(); | |
1222 | ||
1223 | Standard_Real f,l; | |
1224 | ||
1225 | if (orient == TopAbs_FORWARD) { | |
1226 | BRep_Tool::Range(E,f,l); | |
1227 | return (rev) ? l : f; | |
1228 | } | |
1229 | ||
1230 | else if (orient == TopAbs_REVERSED) { | |
1231 | BRep_Tool::Range(E,f,l); | |
1232 | return (rev) ? f : l; | |
1233 | } | |
1234 | ||
1235 | else { | |
1236 | TopLoc_Location L; | |
1237 | const Handle(Geom_Curve)& C = BRep_Tool::Curve(E,L,f,l); | |
1238 | L = L.Predivided(V.Location()); | |
1239 | if (!C.IsNull() || Degenerated(E)) { | |
1240 | BRep_ListIteratorOfListOfPointRepresentation itpr | |
703a6abd | 1241 | ((*((Handle(BRep_TVertex)*) &V.TShape()))->Points()); |
7fd59977 | 1242 | |
1243 | while (itpr.More()) { | |
703a6abd O |
1244 | const Handle(BRep_PointRepresentation)& pr = itpr.Value(); |
1245 | if (pr->IsPointOnCurve(C,L)) { | |
1246 | Standard_Real p = pr->Parameter(); | |
1247 | Standard_Real res = p;// SVV 4 nov 99 - to avoid warnings on Linux | |
1248 | if (!C.IsNull()) { | |
1249 | // Closed curves RLE 16 june 94 | |
1250 | if (Precision::IsNegativeInfinite(f)) return pr->Parameter();//p; | |
1251 | if (Precision::IsPositiveInfinite(l)) return pr->Parameter();//p; | |
1252 | gp_Pnt Pf = C->Value(f).Transformed(L.Transformation()); | |
1253 | gp_Pnt Pl = C->Value(l).Transformed(L.Transformation()); | |
1254 | Standard_Real tol = BRep_Tool::Tolerance(V); | |
1255 | if (Pf.Distance(Pl) < tol) { | |
1256 | if (Pf.Distance(BRep_Tool::Pnt(V)) < tol) { | |
1257 | if (V.Orientation() == TopAbs_FORWARD) res = f;//p = f; | |
1258 | else res = l;//p = l; | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | return res;//p; | |
1263 | } | |
1264 | itpr.Next(); | |
7fd59977 | 1265 | } |
1266 | } | |
1267 | else { | |
1268 | // no 3d curve !! | |
1269 | // let us try with the first pcurve | |
1270 | Handle(Geom2d_Curve) PC; | |
1271 | Handle(Geom_Surface) S; | |
1272 | BRep_Tool::CurveOnSurface(E,PC,S,L,f,l); | |
1273 | L = L.Predivided(V.Location()); | |
1274 | BRep_ListIteratorOfListOfPointRepresentation itpr | |
703a6abd | 1275 | ((*((Handle(BRep_TVertex)*) &V.TShape()))->Points()); |
7fd59977 | 1276 | |
1277 | while (itpr.More()) { | |
703a6abd O |
1278 | const Handle(BRep_PointRepresentation)& pr = itpr.Value(); |
1279 | if (pr->IsPointOnCurveOnSurface(PC,S,L)) { | |
1280 | Standard_Real p = pr->Parameter(); | |
1281 | // Closed curves RLE 16 june 94 | |
1282 | if (PC->IsClosed()) { | |
1283 | if ((p == PC->FirstParameter()) || | |
1284 | (p == PC->LastParameter())) { | |
1285 | if (V.Orientation() == TopAbs_FORWARD) p = PC->FirstParameter(); | |
1286 | else p = PC->LastParameter(); | |
1287 | } | |
1288 | } | |
1289 | return p; | |
1290 | } | |
1291 | itpr.Next(); | |
7fd59977 | 1292 | } |
1293 | } | |
1294 | } | |
1295 | ||
1296 | Standard_NoSuchObject::Raise("BRep_Tool:: no parameter on edge"); | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | //======================================================================= | |
1301 | //function : Parameter | |
1302 | //purpose : Returns the parameters of the vertex on the | |
1303 | // pcurve of the edge on the face. | |
1304 | //======================================================================= | |
1305 | ||
1306 | Standard_Real BRep_Tool::Parameter(const TopoDS_Vertex& V, | |
703a6abd O |
1307 | const TopoDS_Edge& E, |
1308 | const TopoDS_Face& F) | |
7fd59977 | 1309 | { |
1310 | TopLoc_Location L; | |
1311 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,L); | |
1312 | return BRep_Tool::Parameter(V,E,S,L); | |
1313 | } | |
1314 | ||
1315 | //======================================================================= | |
1316 | //function : Parameter | |
1317 | //purpose : Returns the parameters of the vertex on the | |
1318 | // pcurve of the edge on the surface. | |
1319 | //======================================================================= | |
1320 | ||
1321 | Standard_Real BRep_Tool::Parameter(const TopoDS_Vertex& V, | |
703a6abd O |
1322 | const TopoDS_Edge& E, |
1323 | const Handle(Geom_Surface)& S, | |
1324 | const TopLoc_Location& L) | |
7fd59977 | 1325 | { |
1326 | // Search the vertex in the edge | |
1327 | ||
1328 | Standard_Boolean rev = Standard_False; | |
1329 | TopoDS_Shape VF; | |
1330 | TopoDS_Iterator itv(E.Oriented(TopAbs_FORWARD)); | |
1331 | ||
1332 | while (itv.More()) { | |
1333 | if (V.IsSame(itv.Value())) { | |
1334 | if (VF.IsNull()) VF = itv.Value(); | |
1335 | else { | |
703a6abd O |
1336 | rev = E.Orientation() == TopAbs_REVERSED; |
1337 | if (itv.Value().Orientation() == V.Orientation()) | |
1338 | VF = itv.Value(); | |
7fd59977 | 1339 | } |
1340 | } | |
1341 | itv.Next(); | |
1342 | } | |
1343 | ||
1344 | TopAbs_Orientation orient = TopAbs_INTERNAL; | |
1345 | if (!VF.IsNull()) orient = VF.Orientation(); | |
1346 | ||
1347 | Standard_Real f,l; | |
1348 | ||
1349 | if (orient == TopAbs_FORWARD) { | |
1350 | BRep_Tool::Range(E,S,L,f,l); | |
1351 | return (rev) ? l : f; | |
1352 | } | |
1353 | ||
1354 | else if (orient == TopAbs_REVERSED) { | |
1355 | BRep_Tool::Range(E,S,L,f,l); | |
1356 | return (rev) ? f : l; | |
1357 | } | |
1358 | ||
1359 | else { | |
1360 | Handle(Geom2d_Curve) PC = BRep_Tool::CurveOnSurface(E,S,L,f,l); | |
1361 | BRep_ListIteratorOfListOfPointRepresentation itpr | |
1362 | ((*((Handle(BRep_TVertex)*) &V.TShape()))->Points()); | |
1363 | ||
1364 | while (itpr.More()) { | |
1365 | if (itpr.Value()->IsPointOnCurveOnSurface(PC,S,L)) | |
1366 | return itpr.Value()->Parameter(); | |
1367 | itpr.Next(); | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | //---------------------------------------------------------- | |
1372 | ||
1373 | TopLoc_Location L1; | |
1374 | const Handle(Geom_Curve)& C = BRep_Tool::Curve(E,L1,f,l); | |
1375 | L1 = L1.Predivided(V.Location()); | |
1376 | if (!C.IsNull() || Degenerated(E)) { | |
1377 | BRep_ListIteratorOfListOfPointRepresentation itpr | |
1378 | ((*((Handle(BRep_TVertex)*) &V.TShape()))->Points()); | |
1379 | ||
1380 | while (itpr.More()) { | |
1381 | const Handle(BRep_PointRepresentation)& pr = itpr.Value(); | |
1382 | if (pr->IsPointOnCurve(C,L1)) { | |
703a6abd O |
1383 | Standard_Real p = pr->Parameter(); |
1384 | Standard_Real res = p; | |
1385 | if (!C.IsNull()) { | |
1386 | // Closed curves RLE 16 june 94 | |
1387 | if (Precision::IsNegativeInfinite(f)) return res; | |
1388 | if (Precision::IsPositiveInfinite(l)) return res; | |
1389 | gp_Pnt Pf = C->Value(f).Transformed(L1.Transformation()); | |
1390 | gp_Pnt Pl = C->Value(l).Transformed(L1.Transformation()); | |
1391 | Standard_Real tol = BRep_Tool::Tolerance(V); | |
1392 | if (Pf.Distance(Pl) < tol) { | |
1393 | if (Pf.Distance(BRep_Tool::Pnt(V)) < tol) { | |
1394 | if (V.Orientation() == TopAbs_FORWARD) res = f; | |
1395 | else res = l; | |
1396 | } | |
1397 | } | |
1398 | } | |
1399 | return res; | |
7fd59977 | 1400 | } |
1401 | itpr.Next(); | |
1402 | } | |
1403 | } | |
1404 | ||
1405 | //---------------------------------------------------------- | |
1406 | ||
1407 | Standard_NoSuchObject::Raise("BRep_Tool:: no parameter on edge"); | |
1408 | return 0; | |
1409 | } | |
1410 | ||
1411 | //======================================================================= | |
1412 | //function : Parameters | |
1413 | //purpose : Returns the parameters of the vertex on the face. | |
1414 | //======================================================================= | |
1415 | ||
1416 | gp_Pnt2d BRep_Tool::Parameters(const TopoDS_Vertex& V, | |
703a6abd | 1417 | const TopoDS_Face& F) |
7fd59977 | 1418 | { |
1419 | TopLoc_Location L; | |
1420 | const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,L); | |
1421 | L = L.Predivided(V.Location()); | |
1422 | BRep_ListIteratorOfListOfPointRepresentation itpr | |
1423 | ((*((Handle(BRep_TVertex)*) &V.TShape()))->Points()); | |
0d969553 | 1424 | // It is checked if there is PointRepresentation (case non Manifold) |
7fd59977 | 1425 | |
1426 | while (itpr.More()) { | |
1427 | if (itpr.Value()->IsPointOnSurface(S,L)) { | |
1428 | return gp_Pnt2d(itpr.Value()->Parameter(), | |
703a6abd | 1429 | itpr.Value()->Parameter2()); |
7fd59977 | 1430 | } |
1431 | itpr.Next(); | |
1432 | } | |
1433 | ||
1434 | TopoDS_Vertex Vf,Vl; | |
1435 | TopoDS_Edge E; | |
0d969553 Y |
1436 | // Otherwise the edges are searched (PMN 4/06/97) It is not possible to succeed 999/1000! |
1437 | // even if often there is a way to make more economically than above... | |
7fd59977 | 1438 | TopExp_Explorer exp; |
1439 | for (exp.Init(F, TopAbs_EDGE); exp.More(); exp.Next()) { | |
1440 | E = TopoDS::Edge(exp.Current()); | |
1441 | TopExp::Vertices(E, Vf, Vl); | |
1442 | if ((V.IsSame(Vf)) || (V.IsSame(Vl))) { | |
1443 | gp_Pnt2d Pf, Pl; | |
1444 | UVPoints(E, F, Pf, Pl); | |
1445 | if (V.IsSame(Vf)) return Pf; | |
0d969553 | 1446 | else return Pl;//Ambiguity (natural) for degenerated edges. |
7fd59977 | 1447 | } |
1448 | } | |
1449 | Standard_NoSuchObject::Raise("BRep_Tool:: no parameters on surface"); | |
1450 | return gp_Pnt2d(0,0); | |
1451 | } | |
1452 | //======================================================================= | |
1453 | //function : IsClosed | |
ab860031 | 1454 | //purpose : |
7fd59977 | 1455 | //======================================================================= |
ab860031 | 1456 | Standard_Boolean BRep_Tool::IsClosed (const TopoDS_Shape& theShape) |
7fd59977 | 1457 | { |
da72a17c | 1458 | if (theShape.ShapeType() == TopAbs_SHELL) |
ab860031 | 1459 | { |
1460 | NCollection_Map<TopoDS_Shape, TopTools_ShapeMapHasher> aMap (101, new NCollection_IncAllocator); | |
94dea18e | 1461 | TopExp_Explorer exp (theShape.Oriented(TopAbs_FORWARD), TopAbs_EDGE); |
1462 | Standard_Boolean hasBound = Standard_False; | |
1463 | for (; exp.More(); exp.Next()) | |
ab860031 | 1464 | { |
7fd59977 | 1465 | const TopoDS_Edge& E = TopoDS::Edge(exp.Current()); |
ab860031 | 1466 | if (BRep_Tool::Degenerated(E) || E.Orientation() == TopAbs_INTERNAL || E.Orientation() == TopAbs_EXTERNAL) |
1467 | continue; | |
94dea18e | 1468 | hasBound = Standard_True; |
ab860031 | 1469 | if (!aMap.Add(E)) |
1470 | aMap.Remove(E); | |
7fd59977 | 1471 | } |
94dea18e | 1472 | return hasBound && aMap.IsEmpty(); |
7fd59977 | 1473 | } |
ab860031 | 1474 | else if (theShape.ShapeType() == TopAbs_WIRE) |
1475 | { | |
1476 | NCollection_Map<TopoDS_Shape, TopTools_ShapeMapHasher> aMap (101, new NCollection_IncAllocator); | |
94dea18e | 1477 | TopExp_Explorer exp (theShape.Oriented(TopAbs_FORWARD), TopAbs_VERTEX); |
1478 | Standard_Boolean hasBound = Standard_False; | |
1479 | for (; exp.More(); exp.Next()) | |
ab860031 | 1480 | { |
1481 | const TopoDS_Shape& V = exp.Current(); | |
1482 | if (V.Orientation() == TopAbs_INTERNAL || V.Orientation() == TopAbs_EXTERNAL) | |
1483 | continue; | |
94dea18e | 1484 | hasBound = Standard_True; |
ab860031 | 1485 | if (!aMap.Add(V)) |
1486 | aMap.Remove(V); | |
1487 | } | |
94dea18e | 1488 | return hasBound && aMap.IsEmpty(); |
ab860031 | 1489 | } |
da72a17c | 1490 | else if (theShape.ShapeType() == TopAbs_EDGE) |
1491 | { | |
1492 | TopoDS_Vertex aVFirst, aVLast; | |
1493 | TopExp::Vertices(TopoDS::Edge(theShape), aVFirst, aVLast); | |
1494 | return !aVFirst.IsNull() && aVFirst.IsSame(aVLast); | |
1495 | } | |
ab860031 | 1496 | return theShape.Closed(); |
7fd59977 | 1497 | } |
1498 | ||
1499 | //modified by NIZNHY-PKV Fri Oct 17 14:09:58 2008 f | |
1500 | //======================================================================= | |
1501 | //function : IsPlane | |
1502 | //purpose : | |
1503 | //======================================================================= | |
1504 | Standard_Boolean IsPlane(const Handle(Geom_Surface)& aS) | |
1505 | { | |
1506 | Standard_Boolean bRet; | |
1507 | Handle(Geom_Plane) aGP; | |
1508 | Handle(Geom_RectangularTrimmedSurface) aGRTS; | |
1509 | Handle(Geom_OffsetSurface) aGOFS; | |
1510 | // | |
1511 | aGRTS=Handle(Geom_RectangularTrimmedSurface)::DownCast(aS); | |
1512 | aGOFS=Handle(Geom_OffsetSurface)::DownCast(aS); | |
1513 | // | |
1514 | if(!aGOFS.IsNull()) { | |
1515 | aGP=Handle(Geom_Plane)::DownCast(aGOFS->BasisSurface()); | |
1516 | } | |
1517 | else if(!aGRTS.IsNull()) { | |
1518 | aGP=Handle(Geom_Plane)::DownCast(aGRTS->BasisSurface()); | |
1519 | } | |
1520 | else { | |
1521 | aGP=Handle(Geom_Plane)::DownCast(aS); | |
1522 | } | |
1523 | // | |
1524 | bRet=!aGP.IsNull(); | |
1525 | // | |
1526 | return bRet; | |
1527 | } | |
ab860031 | 1528 |