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0031642: Visualization - crash in Graphic3d_Structure::SetVisual() on redisplaying...
[occt.git] / src / STEPControl / STEPControl_Reader.cxx
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973c2be1 1// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 2//
973c2be1 3// This file is part of Open CASCADE Technology software library.
b311480e 4//
d5f74e42 5// This library is free software; you can redistribute it and/or modify it under
6// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 7// by the Free Software Foundation, with special exception defined in the file
8// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
9// distribution for complete text of the license and disclaimer of any warranty.
b311480e 10//
973c2be1 11// Alternatively, this file may be used under the terms of Open CASCADE
12// commercial license or contractual agreement.
b311480e 13
7fd59977 14
7fd59977 15#include <Interface_EntityIterator.hxx>
16#include <Interface_Graph.hxx>
42cf5bc1 17#include <Interface_ShareFlags.hxx>
7fd59977 18#include <Interface_Static.hxx>
7fd59977 19#include <StepBasic_ApplicationContext.hxx>
42cf5bc1 20#include <StepBasic_ConversionBasedUnit.hxx>
7fd59977 21#include <StepBasic_DocumentProductEquivalence.hxx>
d402d481 22#include <StepBasic_HArray1OfNamedUnit.hxx>
d402d481 23#include <StepBasic_LengthMeasureWithUnit.hxx>
42cf5bc1 24#include <StepBasic_MeasureWithUnit.hxx>
25#include <StepBasic_NamedUnit.hxx>
d402d481 26#include <StepBasic_PlaneAngleMeasureWithUnit.hxx>
42cf5bc1 27#include <StepBasic_ProductDefinition.hxx>
28#include <StepBasic_ProductDefinitionContext.hxx>
29#include <StepBasic_ProductDefinitionFormation.hxx>
30#include <StepBasic_ProductDefinitionFormationRelationship.hxx>
31#include <StepBasic_ProductDefinitionWithAssociatedDocuments.hxx>
32#include <StepBasic_SiPrefix.hxx>
33#include <StepBasic_SiUnit.hxx>
34#include <StepBasic_SiUnitAndLengthUnit.hxx>
d402d481 35#include <StepBasic_SiUnitAndPlaneAngleUnit.hxx>
36#include <StepBasic_SiUnitAndSolidAngleUnit.hxx>
42cf5bc1 37#include <StepBasic_SiUnitName.hxx>
38#include <StepBasic_SolidAngleMeasureWithUnit.hxx>
39#include <StepBasic_SolidAngleUnit.hxx>
40#include <STEPConstruct_UnitContext.hxx>
42cf5bc1 41#include <STEPControl_Controller.hxx>
42#include <STEPControl_Reader.hxx>
d402d481 43#include <StepData_StepModel.hxx>
42cf5bc1 44#include <StepGeom_GeometricRepresentationContextAndGlobalUnitAssignedContext.hxx>
45#include <StepGeom_GeomRepContextAndGlobUnitAssCtxAndGlobUncertaintyAssCtx.hxx>
46#include <StepRepr_GlobalUncertaintyAssignedContext.hxx>
47#include <StepRepr_GlobalUnitAssignedContext.hxx>
48#include <StepRepr_MappedItem.hxx>
49#include <StepRepr_NextAssemblyUsageOccurrence.hxx>
50#include <StepRepr_ProductDefinitionShape.hxx>
51#include <StepRepr_PropertyDefinition.hxx>
d402d481 52#include <StepRepr_RepresentationContext.hxx>
42cf5bc1 53#include <StepRepr_RepresentationMap.hxx>
54#include <StepRepr_RepresentationRelationship.hxx>
55#include <StepRepr_ShapeAspect.hxx>
c6f530b8 56#include <StepShape_ManifoldSolidBrep.hxx>
42cf5bc1 57#include <StepShape_ShapeDefinitionRepresentation.hxx>
58#include <StepShape_ShapeRepresentation.hxx>
c6f530b8 59#include <StepShape_ShellBasedSurfaceModel.hxx>
42cf5bc1 60#include <TCollection_AsciiString.hxx>
d402d481 61#include <TColStd_Array1OfAsciiString.hxx>
62#include <TColStd_Array1OfReal.hxx>
42cf5bc1 63#include <TColStd_HSequenceOfTransient.hxx>
64#include <TColStd_MapOfAsciiString.hxx>
65#include <TColStd_SequenceOfAsciiString.hxx>
66#include <Transfer_TransientProcess.hxx>
67#include <XSControl_Controller.hxx>
68#include <XSControl_TransferReader.hxx>
69#include <XSControl_WorkSession.hxx>
70
7fd59977 71//=======================================================================
72//function : STEPControl_Reader
73//purpose :
74//=======================================================================
7fd59977 75STEPControl_Reader::STEPControl_Reader ()
76{
77 STEPControl_Controller::Init();
78 SetNorm ("STEP");
79}
80
81//=======================================================================
82//function : STEPControl_Reader
83//purpose :
84//=======================================================================
85
86STEPControl_Reader::STEPControl_Reader
87 (const Handle(XSControl_WorkSession)& WS, const Standard_Boolean scratch)
88{
89 STEPControl_Controller::Init();
90 SetWS (WS,scratch);
91 SetNorm ("STEP");
92}
93
94//=======================================================================
95//function : StepModel
96//purpose :
97//=======================================================================
98
99Handle(StepData_StepModel) STEPControl_Reader::StepModel () const
100{
101 return Handle(StepData_StepModel)::DownCast(Model());
102}
103
104//=======================================================================
105//function : TransferRoot
106//purpose :
107//=======================================================================
108
109Standard_Boolean STEPControl_Reader::TransferRoot (const Standard_Integer num)
110{
111 return TransferOneRoot (num);
112}
113
114//=======================================================================
115//function : NbRootsForTransfer
116//purpose :
117//=======================================================================
118
119Standard_Integer STEPControl_Reader::NbRootsForTransfer()
120{
121 if (therootsta) return theroots.Length();
122 therootsta = Standard_True;
123
124 //theroots.Clear();
125 Standard_Integer nb = Model()->NbEntities();
126 for (Standard_Integer i = 1; i <= nb; i ++) {
127 Handle(Standard_Transient) ent = Model()->Value(i);
c6f530b8 128 if (Interface_Static::IVal("read.step.all.shapes") == 1) {
129 // Special case to read invalid shape_representation without links to shapes.
130 if (ent->IsKind(STANDARD_TYPE(StepShape_ManifoldSolidBrep))) {
131 Interface_EntityIterator aShareds = WS()->Graph().Sharings(ent);
132 if (!aShareds.More()) {
133 theroots.Append(ent);
134 WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
135 }
136 }
137 if (ent->IsKind(STANDARD_TYPE(StepShape_ShellBasedSurfaceModel))) {
138 Interface_EntityIterator aShareds = WS()->Graph().Sharings(ent);
139 if (!aShareds.More()) {
140 theroots.Append(ent);
141 WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
142 }
143 }
144 }
7fd59977 145 if(ent->IsKind(STANDARD_TYPE(StepBasic_ProductDefinition))) {
146 // PTV 31.01.2003 TRJ11 exclude Product Definition With Associated Document from roots
147 if (ent->IsKind(STANDARD_TYPE(StepBasic_ProductDefinitionWithAssociatedDocuments))) {
148 // check if PDWAD-> PDF <-Document_Product_Equivalence.
149 Standard_Boolean iSexclude = Standard_False;
150 Handle(StepBasic_ProductDefinitionWithAssociatedDocuments) PDWAD =
151 Handle(StepBasic_ProductDefinitionWithAssociatedDocuments)::DownCast(ent);
152 Interface_EntityIterator PDWADsubs = WS()->Graph().Shareds(PDWAD);
153 for (PDWADsubs.Start(); PDWADsubs.More(); PDWADsubs.Next()) {
154 if ( !PDWADsubs.Value()->IsKind(STANDARD_TYPE(StepBasic_ProductDefinitionFormation)))
155 continue;
156 Handle(StepBasic_ProductDefinitionFormation) localPDF =
157 Handle(StepBasic_ProductDefinitionFormation)::DownCast(PDWADsubs.Value());
158 Interface_EntityIterator PDFsubs = WS()->Graph().Sharings(localPDF);
159 for( PDFsubs.Start(); PDFsubs.More(); PDFsubs.Next() )
160 if (PDFsubs.Value()->IsKind(STANDARD_TYPE(StepBasic_DocumentProductEquivalence))) {
161 iSexclude = Standard_True;
162 break;
163 }
164 if (iSexclude)
165 break;
166 }
167 if (iSexclude) {
0797d9d3 168#ifdef OCCT_DEBUG
04232180 169 std::cout << "Warning: STEPControl_Reader::NbRootsForTransfer exclude PDWAD from roots" << std::endl;
7fd59977 170#endif
171 continue;
172 }
173 }
174 Handle(StepBasic_ProductDefinition) PD =
175 Handle(StepBasic_ProductDefinition)::DownCast(ent);
176 Standard_Boolean IsRoot = Standard_True;
177 const Interface_Graph& graph = WS()->Graph();
178 // determinate roots used NextAssemblyUsageOccurrence
179 Interface_EntityIterator subs = graph.Sharings(PD);
180 for(subs.Start(); subs.More(); subs.Next()) {
181 Handle(StepRepr_NextAssemblyUsageOccurrence) NAUO =
182 Handle(StepRepr_NextAssemblyUsageOccurrence)::DownCast(subs.Value());
183 if (NAUO.IsNull()) continue;
184 if (PD==NAUO->RelatedProductDefinition()) IsRoot=Standard_False;
185 }
186 // determinate roots used ProductDefinitionContext
187 if(IsRoot) {
188 const char *str1 = Interface_Static::CVal("read.step.product.context");
189 Standard_Integer ICS = Interface_Static::IVal("read.step.product.context");
190 if(ICS>1) {
191 subs = graph.Shareds(PD);
192 for(subs.Start(); subs.More(); subs.Next()) {
193 Handle(StepBasic_ProductDefinitionContext) PDC =
194 Handle(StepBasic_ProductDefinitionContext)::DownCast(subs.Value());
195 if (PDC.IsNull()) continue;
196 const char *str2 = PDC->LifeCycleStage()->String().ToCString();
197 const char *str3 = PDC->Name()->String().ToCString();
198 if( !( strcasecmp(str1,str2)==0 || strcasecmp(str1,str3)==0 ) )
199 IsRoot=Standard_False;
200 }
201 }
202 }
203 // determinate roots used ProductDefinitionFormationRelationship
204 //subs = graph.Shareds(PD);
205 //for(subs.Start(); subs.More(); subs.Next()) {
206 // Handle(StepBasic_ProductDefinitionFormation) PDF =
207 // Handle(StepBasic_ProductDefinitionFormation)::DownCast(subs.Value());
208 // if (PDF.IsNull()) continue;
209 // Interface_EntityIterator subs1 = graph.Sharings(PDF);
210 // for(subs1.Start(); subs1.More(); subs1.Next()) {
211 // Handle(StepBasic_ProductDefinitionFormationRelationship) PDFR =
212 // Handle(StepBasic_ProductDefinitionFormationRelationship)::DownCast(subs1.Value());
213 // if (PDFR.IsNull()) continue;
214 // if (PDF==PDFR->RelatedProductDefinition()) IsRoot=Standard_False;
215 // }
216 //}
217 if (IsRoot) {
218 theroots.Append(ent);
7f56eba8 219 WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
7fd59977 220 }
221 }
222 TCollection_AsciiString aProdMode = Interface_Static::CVal("read.step.product.mode");
223 if(!aProdMode.IsEqual("ON")) {
224 if(ent->IsKind(STANDARD_TYPE(StepShape_ShapeDefinitionRepresentation))) {
225 Standard_Boolean IsRoot = Standard_True;
226 Handle(StepShape_ShapeDefinitionRepresentation) SDR =
227 Handle(StepShape_ShapeDefinitionRepresentation)::DownCast(ent);
228 Handle(StepRepr_PropertyDefinition) PropDef = SDR->Definition().PropertyDefinition();
229 if(!PropDef.IsNull()) {
230 Handle(StepBasic_ProductDefinition) PD = PropDef->Definition().ProductDefinition();
231 if(!PD.IsNull()) IsRoot = Standard_False;
232 if(IsRoot) {
233 Handle(StepRepr_ShapeAspect) SA = PropDef->Definition().ShapeAspect();
234 if(!SA.IsNull()) {
235 Handle(StepRepr_ProductDefinitionShape) PDS = SA->OfShape();
236 PD = PDS->Definition().ProductDefinition();
237 if(!PD.IsNull()) IsRoot = Standard_False;
238 }
239 }
240 if(IsRoot) {
241 Handle(StepRepr_NextAssemblyUsageOccurrence) NAUO =
242 Handle(StepRepr_NextAssemblyUsageOccurrence)::DownCast(PropDef->Definition().ProductDefinitionRelationship());
243 if(!NAUO.IsNull()) IsRoot = Standard_False;
244 }
245 if(IsRoot) {
246 Handle(StepShape_ShapeRepresentation) SR =
247 Handle(StepShape_ShapeRepresentation)::DownCast(SDR->UsedRepresentation());
248 if(SR.IsNull()) IsRoot = Standard_False;
249 }
250 }
251 if(IsRoot) {
252 theroots.Append(ent);
7f56eba8 253 WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
7fd59977 254 }
255 }
256 if(ent->IsKind(STANDARD_TYPE(StepShape_ShapeRepresentation))) {
257 Standard_Boolean IsRoot = Standard_True;
258 Handle(StepShape_ShapeRepresentation) SR =
259 Handle(StepShape_ShapeRepresentation)::DownCast(ent);
260 const Interface_Graph& graph = WS()->Graph();
261 Interface_EntityIterator subs = graph.Sharings(SR);
262 for(subs.Start(); subs.More() && IsRoot; subs.Next()) {
263 Handle(StepShape_ShapeDefinitionRepresentation) SDR =
264 Handle(StepShape_ShapeDefinitionRepresentation)::DownCast(subs.Value());
265 if(!SDR.IsNull()) IsRoot = Standard_False;
266 if(IsRoot) {
267 Handle(StepRepr_RepresentationRelationship) RR =
268 Handle(StepRepr_RepresentationRelationship)::DownCast(subs.Value());
269 if(!RR.IsNull()) {
270 Handle(StepShape_ShapeRepresentation) SR2 =
271 Handle(StepShape_ShapeRepresentation)::DownCast(RR->Rep1());
272 if(SR==SR2)
273 SR2 = Handle(StepShape_ShapeRepresentation)::DownCast(RR->Rep2());
a965c45b 274 if(!SR2.IsNull())
275 {
276 Interface_EntityIterator subs2 = graph.Sharings(SR2);
277 for(subs2.Start(); subs2.More(); subs2.Next()) {
278 Handle(StepShape_ShapeDefinitionRepresentation) SDR2 =
279 Handle(StepShape_ShapeDefinitionRepresentation)::DownCast(subs2.Value());
280 if(!SDR2.IsNull()) IsRoot = Standard_False;
281 //else {
282 // if(SR==SRR->Rep2()) IsRoot = Standard_False;
283 //}
284 }
7fd59977 285 }
286 }
287 }
288 if(IsRoot) {
289 Handle(StepRepr_RepresentationMap) RM =
290 Handle(StepRepr_RepresentationMap)::DownCast(subs.Value());
291 if(!RM.IsNull()) {
292 Interface_EntityIterator subs2 = graph.Sharings(RM);
293 for(subs2.Start(); subs2.More(); subs2.Next()) {
294 Handle(StepRepr_MappedItem) MI = Handle(StepRepr_MappedItem)::DownCast(subs2.Value());
295 if(!MI.IsNull()) {
296 Interface_EntityIterator subs3 = graph.Sharings(MI);
297 for(subs3.Start(); subs3.More(); subs3.Next()) {
298 Handle(StepShape_ShapeRepresentation) SR2 =
299 Handle(StepShape_ShapeRepresentation)::DownCast(subs3.Value());
300 if(!SR2.IsNull()) IsRoot = Standard_False;
301 }
302 }
303 }
304 }
305 }
306 }
307 if(IsRoot) {
308 theroots.Append(ent);
7f56eba8 309 WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
7fd59977 310 }
311 }
312 }
313
314 }
315
316
317 return theroots.Length();
318}
319
d402d481 320//=======================================================================
321//function : FileUnits
322//purpose :
323//=======================================================================
324
325void STEPControl_Reader::FileUnits( TColStd_SequenceOfAsciiString& theUnitLengthNames,
326 TColStd_SequenceOfAsciiString& theUnitAngleNames,
327 TColStd_SequenceOfAsciiString& theUnitSolidAngleNames)
328{
329 Standard_Integer nbroots = NbRootsForTransfer();
330 if(!nbroots)
331 return;
332 enum
333 {
334 LENGTH = 0,
335 ANLGE = 1,
336 SOLID_ANGLE = 2
337 };
338 const Interface_Graph& graph = WS()->Graph();
339 TColStd_MapOfAsciiString aMapUnits[3];
340
51740958 341 for(Standard_Integer i = 1; i <= nbroots; i++)
d402d481 342 {
343 Handle(Standard_Transient) anEnt = theroots(i);
344 Standard_Integer num = graph.EntityNumber(anEnt);
345 if(!num )
346 continue;
347 Handle(StepBasic_ProductDefinition) aProdDef =
348 Handle(StepBasic_ProductDefinition)::DownCast(anEnt);
349 Handle(StepShape_ShapeDefinitionRepresentation) aShapeDefRepr;
350 if(!aProdDef.IsNull())
351 {
352 Interface_EntityIterator subsPD = graph.Sharings(aProdDef);
353 for(subsPD.Start(); subsPD.More() && aShapeDefRepr.IsNull(); subsPD.Next())
354 {
355 Handle(StepRepr_ProductDefinitionShape) aProdDefShape =
356 Handle(StepRepr_ProductDefinitionShape)::DownCast(subsPD.Value());
357 if(aProdDefShape.IsNull())
358 continue;
359 Interface_EntityIterator subsSR = graph.Sharings(aProdDefShape);
360 Handle(StepShape_ShapeRepresentation) SR;
361 for(subsSR.Start(); subsSR.More() && aShapeDefRepr.IsNull(); subsSR.Next())
362 {
363 Handle(StepShape_ShapeDefinitionRepresentation) aCurShapeDefRepr =
364 Handle(StepShape_ShapeDefinitionRepresentation)::DownCast(subsSR.Value());
365 if(aCurShapeDefRepr.IsNull())
366 continue;
367 Handle(StepRepr_Representation) aUseRepr = aCurShapeDefRepr->UsedRepresentation();
368 if(aUseRepr.IsNull())
369 continue;
370 Handle(StepShape_ShapeRepresentation) aShapeRepr =
371 Handle(StepShape_ShapeRepresentation)::DownCast(aUseRepr);
372 if(aShapeRepr.IsNull())
373 continue;
374 aShapeDefRepr = aCurShapeDefRepr;
375
376 }
377
378
379 }
380
381 }
382 else
383 aShapeDefRepr = Handle(StepShape_ShapeDefinitionRepresentation)::DownCast(anEnt);
384 if(!aShapeDefRepr.IsNull())
385 {
386 Handle(StepShape_ShapeRepresentation) aShapeRepr =
387 Handle(StepShape_ShapeRepresentation)::DownCast(aShapeDefRepr->UsedRepresentation());
388 Handle(StepRepr_RepresentationContext) aRepCont = aShapeRepr->ContextOfItems();
389 if (aRepCont.IsNull())
390 continue;
391 TColStd_Array1OfAsciiString aNameUnits(1,3);
392 TColStd_Array1OfReal aFactorUnits(1,3);
393 if(findUnits(aRepCont,aNameUnits,aFactorUnits))
394 {
395 Standard_Integer k = LENGTH;
396 for ( ; k <= SOLID_ANGLE ; k++)
397 {
398 if(!aMapUnits[k].Contains(aNameUnits(k+1)))
399 {
400 aMapUnits[k].Add(aNameUnits(k+1));
401 TColStd_SequenceOfAsciiString& anUnitSeq = (k == LENGTH ?
402 theUnitLengthNames : ( k == ANLGE ? theUnitAngleNames : theUnitSolidAngleNames ));
403 anUnitSeq.Append(aNameUnits(k+1));
404 }
405 }
406 }
407
408 }
409
410 }
411 //for case when units was not found through PDF or SDR
412 if(theUnitLengthNames.IsEmpty())
413 {
7f56eba8 414 const Handle(Interface_InterfaceModel) &aModel = WS()->Model();
d402d481 415 if(aModel.IsNull())
416 return;
51740958 417 Standard_Integer nb = aModel->NbEntities();
418 for(Standard_Integer i = 1; i <= nb; i++)
d402d481 419 {
420 Handle(Standard_Transient) anEnt = aModel->Value(i);
421 Handle(StepRepr_RepresentationContext) aRepCont = Handle(StepRepr_RepresentationContext)::DownCast(anEnt);
422 if (aRepCont.IsNull())
423 continue;
424 TColStd_Array1OfAsciiString aNameUnits(1,3);
425 TColStd_Array1OfReal aFactorUnits(1,3);
426 if(findUnits(aRepCont,aNameUnits,aFactorUnits))
427 {
428 Standard_Integer k = LENGTH;
429 for ( ; k <= SOLID_ANGLE ; k++)
430 {
431 if(!aMapUnits[k].Contains(aNameUnits(k+1)))
432 {
433 aMapUnits[k].Add(aNameUnits(k+1));
434 TColStd_SequenceOfAsciiString& anUnitSeq = (k == LENGTH ?
435 theUnitLengthNames : ( k == ANLGE ? theUnitAngleNames : theUnitSolidAngleNames ));
436 anUnitSeq.Append(aNameUnits(k+1));
437 }
438 }
439 }
440 }
441 }
442}
443
444//=======================================================================
445//function : getSiName
446//purpose :
447//=======================================================================
448
e9c15c4c 449inline static TCollection_AsciiString getSiName(const Handle(StepBasic_SiUnit)& theUnit)
d402d481 450{
451
452 TCollection_AsciiString aName;
e9c15c4c 453 if (theUnit->HasPrefix()) {
454 switch (theUnit->Prefix()) {
455 case StepBasic_spExa: aName += "exa"; break;
456 case StepBasic_spPeta: aName += "peta"; break;
457 case StepBasic_spTera: aName += "tera"; break;
458 case StepBasic_spGiga: aName += "giga"; break;
459 case StepBasic_spMega: aName += "mega"; break;
460 case StepBasic_spHecto: aName += "hecto"; break;
461 case StepBasic_spDeca: aName += "deca"; break;
462 case StepBasic_spDeci: aName += "deci"; break;
463
464 case StepBasic_spPico: aName += "pico"; break;
465 case StepBasic_spFemto: aName += "femto"; break;
466 case StepBasic_spAtto: aName += "atto"; break;
467
468 case StepBasic_spKilo : aName += "kilo"; break;
469 case StepBasic_spCenti :aName += "centi"; break;
470 case StepBasic_spMilli :aName += "milli"; break;
471 case StepBasic_spMicro :aName += "micro"; break;
472 case StepBasic_spNano :aName += "nano"; break;
473 default: break;
d402d481 474 };
e9c15c4c 475 }
d402d481 476
e9c15c4c 477 switch(theUnit->Name()) {
d402d481 478 case StepBasic_sunMetre : aName += "metre"; break;
479 case StepBasic_sunRadian : aName += "radian"; break;
480 case StepBasic_sunSteradian : aName += "steradian"; break;
481 default: break;
482 };
483 return aName;
484}
485
486//=======================================================================
487//function : findUnits
488//purpose :
489//=======================================================================
490
491Standard_Boolean STEPControl_Reader::findUnits(
492 const Handle(StepRepr_RepresentationContext)& theRepCont,
493 TColStd_Array1OfAsciiString& theNameUnits,
494 TColStd_Array1OfReal& theFactorUnits)
495{
496 Handle(StepRepr_GlobalUnitAssignedContext) aContext;
497 Handle(StepRepr_GlobalUncertaintyAssignedContext) aTol;
498
499 if (theRepCont->IsKind(STANDARD_TYPE(StepGeom_GeometricRepresentationContextAndGlobalUnitAssignedContext))) {
500 aContext = Handle(StepGeom_GeometricRepresentationContextAndGlobalUnitAssignedContext)::
501 DownCast(theRepCont)->GlobalUnitAssignedContext();
502 }
503
504
505 if (theRepCont->IsKind(STANDARD_TYPE(StepGeom_GeomRepContextAndGlobUnitAssCtxAndGlobUncertaintyAssCtx))) {
506 aContext = Handle(StepGeom_GeomRepContextAndGlobUnitAssCtxAndGlobUncertaintyAssCtx)::
507 DownCast(theRepCont)->GlobalUnitAssignedContext();
508
509 }
510 if(aContext.IsNull())
511 return Standard_False;
512 // Start Computation
513 Handle(StepBasic_HArray1OfNamedUnit) anUnits = aContext->Units();
514 Standard_Integer nbU = aContext->NbUnits();
515 Standard_Integer nbFind = 0;
516 for (Standard_Integer i = 1; i <= nbU; i++) {
517 Handle(StepBasic_NamedUnit) aNamedUnit = aContext->UnitsValue(i);
518 Handle(StepBasic_ConversionBasedUnit) aConvUnit =
519 Handle(StepBasic_ConversionBasedUnit)::DownCast(aNamedUnit);
520 Standard_Integer anInd = 0;
521 TCollection_AsciiString aName;
522 Standard_Real anUnitFact = 0;
523 if( !aConvUnit.IsNull() )
524 {
525 Handle(StepBasic_MeasureWithUnit) aMeasWithUnit =
526 aConvUnit->ConversionFactor();
527
528 if(aMeasWithUnit.IsNull())
529 continue;
530
531 if( aMeasWithUnit->IsKind(STANDARD_TYPE(StepBasic_LengthMeasureWithUnit)) )
532 anInd = 1;
533 else if( aMeasWithUnit->IsKind(STANDARD_TYPE(StepBasic_PlaneAngleMeasureWithUnit)) )
534 anInd = 2;
535 else if( aMeasWithUnit->IsKind(STANDARD_TYPE(StepBasic_SolidAngleMeasureWithUnit)) )
536 anInd = 3;
537 if(!anInd)
538 continue;
539 aName = aConvUnit->Name()->String();
540 anUnitFact = aMeasWithUnit->ValueComponent();
541 }
542 else
543 {
544 Handle(StepBasic_SiUnit) aSiUnit = Handle(StepBasic_SiUnit)::DownCast(aNamedUnit);
545 if( aSiUnit.IsNull())
546 continue;
547 if(aSiUnit->IsKind(STANDARD_TYPE(StepBasic_SiUnitAndLengthUnit)))
548 anInd =1;
549 else if(aSiUnit->IsKind(STANDARD_TYPE(StepBasic_SiUnitAndPlaneAngleUnit)))
550 anInd = 2;
551 else if(aSiUnit->IsKind(STANDARD_TYPE(StepBasic_SiUnitAndSolidAngleUnit)))
552 anInd = 3;
553 if( !anInd )
554 continue;
555 anUnitFact = (!aSiUnit->HasPrefix() ?
556 1. : STEPConstruct_UnitContext::ConvertSiPrefix(aSiUnit->Prefix()));
e9c15c4c 557 aName = getSiName(aSiUnit);
d402d481 558
559
560 }
561 if( !anInd )
562 continue;
563
564 theNameUnits.SetValue(anInd, aName);
565 theFactorUnits.SetValue(anInd, anUnitFact);
566 nbFind++;
567
568 }
dde68833 569
570 return nbFind != 0;
d402d481 571}
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