src/Model/Model_BodyBuilder.cpp

   1 // Copyright (C) 2014-2019  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include <Model_BodyBuilder.h>
  21
  22 #include <Model_Data.h>
  23 #include <Model_Document.h>
  24 #include <ModelAPI_Session.h>
  25 #include <TNaming_Builder.hxx>
  26 #include <TNaming_NamedShape.hxx>
  27 #include <TNaming_Iterator.hxx>
  28 #include <TNaming_Tool.hxx>
  29 #include <TNaming_SameShapeIterator.hxx>
  30 #include <TDataStd_Name.hxx>
  31 #include <TDataStd_Integer.hxx>
  32 #include <TDataStd_ExtStringList.hxx>
  33 #include <TopoDS.hxx>
  34 #include <TopoDS_Face.hxx>
  35 #include <TDF_ChildIterator.hxx>
  36 #include <TDF_ChildIDIterator.hxx>
  37 #include <TDF_Reference.hxx>
  38 #include <TDF_Tool.hxx>
  39 #include <TopTools_MapOfShape.hxx>
  40 #include <TopExp_Explorer.hxx>
  41 #include <TopTools_ListOfShape.hxx>
  42 #include <TopTools_ListIteratorOfListOfShape.hxx>
  43 #include <TopTools_DataMapOfShapeListOfShape.hxx>
  44 #include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
  45 #include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
  46 #include <TopTools_MapIteratorOfMapOfShape.hxx>
  47 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
  48 #include <TopTools_IndexedMapOfShape.hxx>
  49 #include <TopTools_DataMapOfShapeShape.hxx>
  50 #include <TopExp.hxx>
  51 #include <BRepTools.hxx>
  52 #include <BRep_Tool.hxx>
  53 #include <BRepTools_History.hxx>
  54 #include <GeomAPI_Shape.h>
  55 #include <GeomAPI_ShapeExplorer.h>
  56 #include <GeomAlgoAPI_MakeShape.h>
  57 #include <GeomAlgoAPI_SortListOfShapes.h>
  58 #include <Config_PropManager.h>
  59 // DEB
  60 //#include <TCollection_AsciiString.hxx>
  61 //#define DEB_IMPORT 1
  62
  63 /// reference to the shape in external document: sting list attribute identifier
  64 static const Standard_GUID kEXTERNAL_SHAPE_REF("9aa5dd14-6d34-4a8d-8786-05842fd7bbbd");
  65
  66 static const int INVALID_TAG            = -1;
  67 static const int GENERATED_VERTICES_TAG = 1;
  68 static const int GENERATED_EDGES_TAG    = 2;
  69 static const int GENERATED_FACES_TAG    = 3;
  70 static const int MODIFIED_VERTICES_TAG  = 4;
  71 static const int MODIFIED_EDGES_TAG     = 5;
  72 static const int MODIFIED_FACES_TAG     = 6;
  73 static const int DELETED_TAG            = 7;
  74 static const int PRIMITIVES_START_TAG   = 11;
  75
  76 static int getGenerationTag(const TopoDS_Shape& theShape) {
  77   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
  78   switch (aShapeType) {
  79     case TopAbs_VERTEX: return GENERATED_VERTICES_TAG;
  80     case TopAbs_EDGE:   return GENERATED_EDGES_TAG;
  81     case TopAbs_FACE:   return GENERATED_FACES_TAG;
  82   }
  83
  84   return INVALID_TAG;
  85 }
  86
  87 static int getModificationTag(const TopoDS_Shape& theShape) {
  88   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
  89   switch (aShapeType) {
  90     case TopAbs_VERTEX: return MODIFIED_VERTICES_TAG;
  91     case TopAbs_EDGE:   return MODIFIED_EDGES_TAG;
  92     case TopAbs_FACE:   return MODIFIED_FACES_TAG;
  93   }
  94
  95   return INVALID_TAG;
  96 }
  97
  98 static bool isAlreadyStored(const TNaming_Builder* theBuilder,
  99                             const TopoDS_Shape& theOldShape,
 100                             const TopoDS_Shape& theNewShape)
 101 {
 102   for (TNaming_Iterator aNamingIt(theBuilder->NamedShape());
 103     aNamingIt.More();
 104     aNamingIt.Next())
 105   {
 106     if (aNamingIt.NewShape().IsSame(theNewShape)
 107       && aNamingIt.OldShape().IsSame(theOldShape))
 108     {
 109       return true;
 110     }
 111   }
 112
 113   return false;
 114 }
 115
 116 Model_BodyBuilder::Model_BodyBuilder(ModelAPI_Object* theOwner)
 117 : ModelAPI_BodyBuilder(theOwner),
 118   myFreePrimitiveTag(PRIMITIVES_START_TAG)
 119 {
 120 }
 121
 122 /// Checks that shape is presented in the tree with not-selection evolution
 123 /// In theOriginalLabel it returns label where NS of old sub-shape is stored
 124 static bool isShapeInTree(const TDF_Label& theAccess1, const TDF_Label& theAccess2,
 125   TopoDS_Shape theShape, TDF_Label& theOriginalLabel)
 126 {
 127   bool aResult = TNaming_Tool::HasLabel(theAccess1, theShape);
 128   if (aResult) { //check evolution and a label of this shape
 129     for(TNaming_SameShapeIterator aShapes(theShape, theAccess1); aShapes.More(); aShapes.Next())
 130     {
 131       static Handle(TNaming_NamedShape) aNS;
 132       if (aShapes.Label().FindAttribute(TNaming_NamedShape::GetID(), aNS)) {
 133         if (aNS->Evolution() != TNaming_SELECTED) {
 134           theOriginalLabel = aNS->Label();
 135           return true;
 136         }
 137       }
 138     }
 139   }
 140   if (!theAccess2.IsNull()) {
 141     static const TDF_Label anEmpty;
 142     return isShapeInTree(theAccess2, anEmpty, theShape, theOriginalLabel);
 143   }
 144   return false;
 145 }
 146
 147 /// Stores entry to the external label in the entries list at this label
 148 static void storeExternalReference(const TDF_Label& theExternal, const TDF_Label theThis)
 149 {
 150   // store information about the external document reference to restore old shape on open
 151   if (!theExternal.IsNull() && !theExternal.Root().IsEqual(theThis.Root())) {
 152     Handle(TDataStd_ExtStringList) anEntries;
 153     if (!theThis.FindAttribute(kEXTERNAL_SHAPE_REF, anEntries)) {
 154       anEntries = TDataStd_ExtStringList::Set(theThis, kEXTERNAL_SHAPE_REF);
 155     }
 156     TCollection_AsciiString anEntry;
 157     TDF_Tool::Entry(theExternal, anEntry);
 158     // check it already contains this entry
 159     TDataStd_ListOfExtendedString::Iterator anIter(anEntries->List());
 160     for(; anIter.More(); anIter.Next())
 161       if (anIter.Value() == anEntry)
 162         break;
 163     if (!anIter.More()) {
 164       anEntries->Append(anEntry);
 165     }
 166   }
 167 }
 168
 169 void Model_BodyBuilder::store(const GeomShapePtr& theShape,
 170                               const bool theIsStoreSameShapes)
 171 {
 172   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 173   if (aData) {
 174     TDF_Label aShapeLab = aData->shapeLab();
 175     // clean builders
 176     clean();
 177     // store the new shape as primitive
 178     TNaming_Builder aBuilder(aShapeLab);
 179     if (!theShape)
 180       return;  // bad shape
 181     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 182     if (aShape.IsNull())
 183       return;  // null shape inside
 184
 185     if(!theIsStoreSameShapes) {
 186       Handle(TNaming_NamedShape) aNS = TNaming_Tool::NamedShape(aShape, aShapeLab);
 187       // the last condition is for the issue 2751 : existing shape may be found in compound-NS
 188       if(!aNS.IsNull() && !aNS->IsEmpty() && aNS->Get().IsSame(aShape)) {
 189         // This shape is already in document, store reference instead of shape;
 190         const TDF_Label aFoundLabel = aNS->Label();
 191         TDF_Reference::Set(aShapeLab, aFoundLabel);
 192         aShapeLab.ForgetAttribute(TNaming_NamedShape::GetID());
 193         return;
 194       }
 195     }
 196
 197     aBuilder.Generated(aShape);
 198     // register name
 199     aShapeLab.ForgetAttribute(TDF_Reference::GetID());
 200     if(!aBuilder.NamedShape()->IsEmpty()) {
 201       Handle(TDataStd_Name) anAttr;
 202       if(aBuilder.NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 203         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 204         if(!aName.empty()) {
 205           std::shared_ptr<Model_Document> aDoc =
 206             std::dynamic_pointer_cast<Model_Document>(document());
 207           aDoc->addNamingName(aBuilder.NamedShape()->Label(), aName);
 208         }
 209       }
 210     }
 211   }
 212 }
 213
 214 void Model_BodyBuilder::storeGenerated(const GeomShapePtr& theFromShape,
 215   const GeomShapePtr& theToShape, const bool theIsCleanStored)
 216 {
 217   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 218   if (aData) {
 219     TDF_Label aShapeLab = aData->shapeLab();
 220     // clean builders
 221     if (theIsCleanStored)
 222       clean();
 223     TNaming_Builder* aBuilder = builder(0);
 224     if (!theFromShape || !theToShape)
 225       return;  // bad shape
 226     TopoDS_Shape aShapeBasis = theFromShape->impl<TopoDS_Shape>();
 227     if (aShapeBasis.IsNull())
 228       return;  // null shape inside
 229     TopoDS_Shape aShapeNew = theToShape->impl<TopoDS_Shape>();
 230     if (aShapeNew.IsNull())
 231       return;  // null shape inside
 232
 233     // There is no sense to write history if old shape does not exist in the document.
 234     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 235       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 236     TDF_Label anOriginalLabel;
 237     if (!isShapeInTree(aData->shapeLab(), anAccess2, aShapeBasis, anOriginalLabel)) {
 238       if (aBuilder->NamedShape()->Get().IsNull()) { // store as primitive if alone anyway
 239         aBuilder->Generated(aShapeNew);
 240       }
 241     } else {
 242       if (aBuilder->NamedShape()->Evolution() == TNaming_PRIMITIVE) { // erase primitive before
 243         myBuilders.erase(0);
 244         aBuilder = builder(0);
 245       }
 246
 247       aBuilder->Generated(aShapeBasis, aShapeNew);
 248       // store information about the external document reference to restore old shape on open
 249       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 250     }
 251
 252     // register name
 253     if(!aBuilder->NamedShape()->IsEmpty()) {
 254       Handle(TDataStd_Name) anAttr;
 255       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 256         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 257         if(!aName.empty()) {
 258           std::shared_ptr<Model_Document> aDoc =
 259             std::dynamic_pointer_cast<Model_Document>(document());
 260           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 261         }
 262       }
 263     }
 264   }
 265 }
 266
 267 void Model_BodyBuilder::storeGenerated(const std::list<GeomShapePtr>& theFromShapes,
 268   const GeomShapePtr& theToShape, const std::shared_ptr<GeomAlgoAPI_MakeShape> theMakeShape)
 269 {
 270   bool aStored = false;
 271   std::list<GeomShapePtr>::const_iterator anOldIter = theFromShapes.cbegin();
 272   for (; anOldIter != theFromShapes.cend(); anOldIter++) {
 273     bool aStore = (*anOldIter)->isCompound() || (*anOldIter)->isShell() || (*anOldIter)->isWire();
 274     if (!aStore) {
 275       ListOfShape aNews; // check this old really generates theToShape
 276       theMakeShape->generated(*anOldIter, aNews);
 277       ListOfShape::iterator aNewIter = aNews.begin();
 278       for (; aNewIter != aNews.end(); aNewIter++) {
 279         if (theToShape->isSame(*aNewIter))
 280           break;
 281       }
 282       aStore = aNewIter != aNews.end();
 283     }
 284     if (aStore) {
 285       storeGenerated(*anOldIter, theToShape, !aStored);
 286       TNaming_Builder* aBuilder = builder(0);
 287       aStored = !aBuilder->NamedShape()->IsEmpty();
 288     }
 289   }
 290   if (!aStored) { // store as PRIMITIVE, but clean in any way
 291     store(theToShape);
 292     return;
 293   }
 294 }
 295
 296 TNaming_Builder* Model_BodyBuilder::builder(const int theTag)
 297 {
 298   std::map<int, TNaming_Builder*>::iterator aFind = myBuilders.find(theTag);
 299   if (aFind == myBuilders.end()) {
 300     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 301     myBuilders[theTag] = new TNaming_Builder(
 302       theTag == 0 ? aData->shapeLab() : aData->shapeLab().FindChild(theTag));
 303     aFind = myBuilders.find(theTag);
 304   }
 305   return aFind->second;
 306 }
 307
 308 void Model_BodyBuilder::storeModified(const GeomShapePtr& theOldShape,
 309                                       const GeomShapePtr& theNewShape,
 310                                       const bool theIsCleanStored)
 311 {
 312   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 313   if (aData) {
 314     // clean builders
 315     if (theIsCleanStored) clean();
 316     TNaming_Builder* aBuilder = builder(0);
 317     if (!theOldShape || !theNewShape)
 318       return;  // bad shape
 319     TopoDS_Shape aShapeOld = theOldShape->impl<TopoDS_Shape>();
 320     if (aShapeOld.IsNull())
 321       return;  // null shape inside
 322     TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 323     if (aShapeNew.IsNull())
 324       return;  // null shape inside
 325
 326     // There is no sense to write history if old shape does not exist in the document.
 327     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 328       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 329     TDF_Label anOriginalLabel;
 330     if (!isShapeInTree(aData->shapeLab(), anAccess2, aShapeOld, anOriginalLabel)) {
 331       if (aBuilder->NamedShape()->Get().IsNull()) { // store as primitive if alone anyway
 332         aBuilder->Generated(aShapeNew);
 333       }
 334     } else {
 335       if (aBuilder->NamedShape()->Evolution() == TNaming_PRIMITIVE) { // erase primitive before
 336         myBuilders.erase(0);
 337         aBuilder = builder(0);
 338       }
 339
 340       aBuilder->Modify(aShapeOld, aShapeNew);
 341       // store information about the external document reference to restore old shape on open
 342       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 343     }
 344
 345     if(!aBuilder->NamedShape()->IsEmpty()) {
 346       Handle(TDataStd_Name) anAttr;
 347       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(), anAttr)) {
 348         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 349         if(!aName.empty()) {
 350           std::shared_ptr<Model_Document> aDoc =
 351             std::dynamic_pointer_cast<Model_Document>(document());
 352           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 353         }
 354       }
 355     }
 356   }
 357 }
 358
 359 void Model_BodyBuilder::storeModified(const std::list<GeomShapePtr>& theOldShapes,
 360   const GeomShapePtr& theNewShape, const std::shared_ptr<GeomAlgoAPI_MakeShape> theMakeShape)
 361 {
 362   bool aStored = false;
 363   std::list<GeomShapePtr>::const_iterator anOldIter = theOldShapes.cbegin();
 364   for(; anOldIter != theOldShapes.cend(); anOldIter++) {
 365     // compounds may cause crash if call "modified"
 366     bool aStore = (*anOldIter)->isCompound() || (*anOldIter)->isShell() || (*anOldIter)->isWire();
 367     if (!aStore) {
 368       ListOfShape aNews; // check this old really modifies theNewShape
 369       theMakeShape->modified(*anOldIter, aNews);
 370       ListOfShape::iterator aNewIter = aNews.begin();
 371       for(; aNewIter != aNews.end(); aNewIter++) {
 372         if (theNewShape->isSame(*aNewIter))
 373           break;
 374       }
 375       aStore = aNewIter != aNews.end();
 376     }
 377     if (aStore) {
 378       storeModified(*anOldIter, theNewShape, !aStored);
 379       TNaming_Builder* aBuilder = builder(0);
 380       aStored = !aBuilder->NamedShape()->IsEmpty();
 381     }
 382   }
 383   if (!aStored) {
 384     // check the new shape is already in the tree, so, no need to store primitive, just reference
 385     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 386     if (aData.get()) {
 387       TDF_Label aShapeLab = aData->shapeLab();
 388       TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 389       Handle(TNaming_NamedShape) aNS = TNaming_Tool::NamedShape(aShapeNew, aShapeLab);
 390       // the last condition is for the issue 2751 : existing shape may be found in compound-NS
 391       if (!aNS.IsNull() && !aNS->IsEmpty() && aNS->Get().IsSame(aShapeNew)) {
 392         // This shape is already in document, store reference instead of shape;
 393         const TDF_Label aFoundLabel = aNS->Label();
 394         TDF_Reference::Set(aShapeLab, aFoundLabel);
 395         myBuilders.erase(0);
 396         aShapeLab.ForgetAttribute(TNaming_NamedShape::GetID());
 397         return;
 398       }
 399     }
 400     store(theNewShape); // store as PRIMITIVE, but clean in any way
 401     return;
 402   }
 403 }
 404
 405 void Model_BodyBuilder::clean()
 406 {
 407   TDF_Label aLab = std::dynamic_pointer_cast<Model_Data>(data())->shapeLab();
 408   if (aLab.IsNull())
 409     return;
 410   std::map<int, TNaming_Builder*>::iterator aBuilder = myBuilders.begin();
 411   for(; aBuilder != myBuilders.end(); aBuilder++) {
 412     Handle(TNaming_NamedShape) aNS = aBuilder->second->NamedShape();
 413     delete aBuilder->second;
 414     if (!aNS.IsNull() && !aNS->Label().IsNull())
 415       aNS->Label().ForgetAttribute(TNaming_NamedShape::GetID());
 416   }
 417   myBuilders.clear();
 418   myPrimitivesNamesIndexMap.clear();
 419   // remove the old reference (if any)
 420   aLab.ForgetAttribute(TDF_Reference::GetID());
 421   myFreePrimitiveTag = PRIMITIVES_START_TAG;
 422   TDF_ChildIDIterator anEntriesIter(aLab, kEXTERNAL_SHAPE_REF, true);
 423   for(; anEntriesIter.More(); anEntriesIter.Next()) {
 424     anEntriesIter.Value()->Label().ForgetAttribute(kEXTERNAL_SHAPE_REF);
 425   }
 426 }
 427
 428 void Model_BodyBuilder::cleanCash()
 429 {
 430   myPrimitivesNamesIndexMap.clear();
 431 }
 432
 433 Model_BodyBuilder::~Model_BodyBuilder()
 434 {
 435   clean();
 436 }
 437
 438 void Model_BodyBuilder::buildName(const int theTag, const std::string& theName)
 439 {
 440   std::string aName = theName;
 441   std::string aPrefix = "";
 442   switch (theTag) {
 443     case GENERATED_VERTICES_TAG: aPrefix = aName.empty() ? "Generated_Vertex" : "GV:"; break;
 444     case GENERATED_EDGES_TAG:    aPrefix = aName.empty() ? "Generated_Edge"   : "GE:"; break;
 445     case GENERATED_FACES_TAG:    aPrefix = aName.empty() ? "Generated_Face"   : "GF:"; break;
 446     case MODIFIED_VERTICES_TAG:  aPrefix = aName.empty() ? "Modified_Vertex"  : "MV:"; break;
 447     case MODIFIED_EDGES_TAG:     aPrefix = aName.empty() ? "Modified_Edge"    : "ME:"; break;
 448     case MODIFIED_FACES_TAG:     aPrefix = aName.empty() ? "Modified_Face"    : "MF:"; break;
 449   }
 450   aName.insert(0, aPrefix);
 451
 452   TDataStd_Name::Set(builder(theTag)->NamedShape()->Label(), aName.c_str());
 453 }
 454 bool Model_BodyBuilder::generated(const GeomShapePtr& theNewShape,
 455                                   const std::string& theName,
 456                                   const bool theCheckIsInResult)
 457 {
 458   GeomShapePtr aResultShape = shape();
 459   if (theCheckIsInResult) {
 460     bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(theNewShape, false);
 461     if (aNewShapeIsNotInResultShape) {
 462       return false;
 463     }
 464   }
 465
 466   TopoDS_Shape aShape = theNewShape->impl<TopoDS_Shape>();
 467   builder(myFreePrimitiveTag)->Generated(aShape);
 468   if (!theName.empty()) {
 469     std::string aName = theName;
 470     if (myPrimitivesNamesIndexMap.find(theName) != myPrimitivesNamesIndexMap.end()) {
 471       IndexTags& anIndexTags = myPrimitivesNamesIndexMap.find(theName)->second;
 472       aName += "_" + std::to_string(++(anIndexTags.index));
 473       anIndexTags.tags.push_back(myFreePrimitiveTag);
 474       if (anIndexTags.index == 2) {
 475         buildName(anIndexTags.tags.front(), theName + "_1");
 476       }
 477     }
 478     else {
 479       IndexTags anIndexTags;
 480       anIndexTags.index = 1;
 481       anIndexTags.tags.push_back(myFreePrimitiveTag);
 482       myPrimitivesNamesIndexMap[theName] = anIndexTags;
 483     }
 484
 485     buildName(myFreePrimitiveTag, aName);
 486   }
 487   ++myFreePrimitiveTag;
 488   return true;
 489 }
 490
 491 void Model_BodyBuilder::generated(const GeomShapePtr& theOldShape,
 492                                   const GeomShapePtr& theNewShape,
 493                                   const std::string& theName)
 494 {
 495   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 496   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 497   TopAbs_ShapeEnum aNewShapeType = aNewShape.ShapeType();
 498   int aTag;
 499   if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 500     // TODO: This is a workaround. New shape should be only vertex, edge or face.
 501     TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE : TopAbs_FACE;
 502     aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 503     for (TopExp_Explorer anExp(aNewShape, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 504       builder(aTag)->Generated(anOldShape, anExp.Current());
 505     }
 506     buildName(aTag, theName);
 507   } else {
 508     aTag = getGenerationTag(aNewShape);
 509     if (aTag == INVALID_TAG) return;
 510     builder(aTag)->Generated(anOldShape, aNewShape);
 511     buildName(aTag, theName);
 512   }
 513 }
 514
 515 void Model_BodyBuilder::modified(const GeomShapePtr& theOldShape,
 516                                  const GeomShapePtr& theNewShape,
 517                                  const std::string& theName)
 518 {
 519   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 520   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 521   int aTag = getModificationTag(aNewShape);
 522   if (aTag == INVALID_TAG) return;
 523   builder(aTag)->Modify(anOldShape, aNewShape);
 524   buildName(aTag, theName);
 525 }
 526
 527 void Model_BodyBuilder::loadDeletedShapes(const GeomMakeShapePtr& theAlgo,
 528                                           const GeomShapePtr& theOldShape,
 529                                           const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 530                                           const GeomShapePtr& theShapesToExclude)
 531 {
 532   TopTools_MapOfShape anAlreadyProcessedShapes;
 533   GeomShapePtr aResultShape = shape();
 534   for (GeomAPI_ShapeExplorer anExp(theOldShape, theShapeTypeToExplore);
 535        anExp.more();
 536        anExp.next())
 537   {
 538     GeomShapePtr anOldSubShape = anExp.current();
 539     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 540     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)
 541         || !theAlgo->isDeleted(anOldSubShape)
 542         || aResultShape->isSubShape(anOldSubShape, false)
 543         || (theShapesToExclude.get() && theShapesToExclude->isSubShape(anOldSubShape, false)))
 544     {
 545       continue;
 546     }
 547
 548     ListOfShape aNewShapes;
 549     if (BRepTools_History::IsSupportedType(anOldSubShape_)) { // to avoid crash in #2572
 550       theAlgo->modified(anOldSubShape, aNewShapes);
 551     }
 552
 553     if (aNewShapes.size() == 0
 554         || (aNewShapes.size() == 1 && aNewShapes.front()->isSame(anOldSubShape))) {
 555       builder(DELETED_TAG)->Delete(anOldSubShape_);
 556     }
 557   }
 558 }
 559
 560 // Keep only the shapes with minimal shape type
 561 static void keepTopLevelShapes(ListOfShape& theShapes,
 562                                const TopoDS_Shape& theRoot,
 563                                const GeomShapePtr& theResultShape = GeomShapePtr())
 564 {
 565   GeomAPI_Shape::ShapeType aKeepShapeType = GeomAPI_Shape::SHAPE;
 566   ListOfShape::iterator anIt = theShapes.begin();
 567   while (anIt != theShapes.end()) {
 568     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 569     bool aSkip = aNewShape.IsNull() ||
 570       (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 571     if (aSkip || theRoot.IsSame(aNewShape) || (theResultShape &&
 572         (!theResultShape->isSubShape(*anIt, false) || theResultShape->isSame(*anIt)))) {
 573       ListOfShape::iterator aRemoveIt = anIt++;
 574       theShapes.erase(aRemoveIt);
 575     } else {
 576       GeomAPI_Shape::ShapeType aType = (*anIt)->shapeType();
 577       if (aType < aKeepShapeType) {
 578         // found a shape with lesser shape type => remove all previous shapes
 579         aKeepShapeType = aType;
 580         theShapes.erase(theShapes.begin(), anIt);
 581         ++anIt;
 582       } else if (aType > aKeepShapeType) {
 583         // shapes with greater shape type should be removed from the list
 584         ListOfShape::iterator aRemoveIt = anIt++;
 585         theShapes.erase(aRemoveIt);
 586       } else
 587         ++anIt;
 588     }
 589   }
 590 }
 591
 592 void Model_BodyBuilder::loadModifiedShapes(const GeomMakeShapePtr& theAlgo,
 593                                            const GeomShapePtr& theOldShape,
 594                                            const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 595                                            const std::string& theName)
 596 {
 597   GeomShapePtr aResultShape = shape();
 598   GeomShapePtr aShapeToExplore = theOldShape;
 599   if (theAlgo->isNewShapesCollected(theOldShape, theShapeTypeToExplore)) {
 600     // use optimized set of old shapes for this
 601     GeomShapePtr aCompound = theAlgo->oldShapesForNew(theOldShape,
 602                                                       aResultShape,
 603                                                       theShapeTypeToExplore);
 604     if (aCompound.get()) aShapeToExplore = aCompound;
 605   }
 606
 607   TopTools_MapOfShape anAlreadyProcessedShapes;
 608   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 609   for (GeomAPI_ShapeExplorer anOldShapeExp(aShapeToExplore, theShapeTypeToExplore);
 610        anOldShapeExp.more();
 611        anOldShapeExp.next())
 612   {
 613     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 614     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 615
 616     // There is no sense to write history if shape already processed
 617     // or old shape does not exist in the document.
 618     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 619     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 620       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 621     TDF_Label anOriginalLabel;
 622     bool anOldSubShapeNotInTree =
 623       !isShapeInTree(aData->shapeLab(), anAccess2, anOldSubShape_, anOriginalLabel);
 624     if (anOldSubShapeAlreadyProcessed || anOldSubShapeNotInTree) {
 625       continue;
 626     }
 627
 628     // Get new shapes.
 629     ListOfShape aNewShapes;
 630     theAlgo->modified(anOldSubShape, aNewShapes);
 631
 632     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 633          aNewShapesIt != aNewShapes.cend();
 634          ++aNewShapesIt)
 635     {
 636       GeomShapePtr aNewShape = *aNewShapesIt;
 637       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 638       bool isGenerated = anOldSubShape_.ShapeType() != aNewShape_.ShapeType();
 639
 640       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 641       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 642       if (aNewShapeIsSameAsOldShape || aNewShapeIsNotInResultShape)
 643         continue;
 644
 645       if (aResultShape->isSame(aNewShape))
 646         continue; // it is stored on the root level (2241 - history propagation issue)
 647
 648       int aTag = isGenerated ? getGenerationTag(aNewShape_) : getModificationTag(aNewShape_);
 649       TNaming_Builder*aBuilder = builder(aTag);
 650       if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_))
 651         continue; // new shape was already stored.
 652
 653       buildName(aTag, theName);
 654       isGenerated ? aBuilder->Generated(anOldSubShape_, aNewShape_)
 655                   : aBuilder->Modify(anOldSubShape_, aNewShape_);
 656       // store information about the external document reference to restore old shape on open
 657       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 658     }
 659   }
 660 }
 661
 662 void Model_BodyBuilder::loadGeneratedShapes(const GeomMakeShapePtr& theAlgo,
 663                                             const GeomShapePtr& theOldShape,
 664                                             const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 665                                             const std::string& theName,
 666                                             const bool theSaveOldIfNotInTree)
 667 {
 668   GeomShapePtr aResultShape = shape();
 669   TopTools_MapOfShape anAlreadyProcessedShapes;
 670   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 671   for (GeomAPI_ShapeExplorer anOldShapeExp(theOldShape, theShapeTypeToExplore);
 672        anOldShapeExp.more();
 673        anOldShapeExp.next())
 674   {
 675     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 676     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 677
 678     // There is no sense to write history if shape already processed
 679     // or old shape does not exist in the document.
 680     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 681     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 682       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 683     TDF_Label anOriginalLabel;
 684     bool anOldSubShapeNotInTree =
 685       !isShapeInTree(aData->shapeLab(), anAccess2, anOldSubShape_, anOriginalLabel);
 686     if (anOldSubShapeAlreadyProcessed || anOldSubShapeNotInTree) {
 687       if (theSaveOldIfNotInTree) {
 688         std::string aSelectionName = theName + "Selected";
 689         generated(anOldSubShape, aSelectionName, false);
 690       } else
 691         continue;
 692     }
 693
 694     // Get new shapes.
 695     ListOfShape aNewShapes;
 696     theAlgo->generated(anOldSubShape, aNewShapes);
 697
 698     keepTopLevelShapes(aNewShapes, anOldSubShape_);
 699
 700     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 701          aNewShapesIt != aNewShapes.cend();
 702          ++aNewShapesIt)
 703     {
 704       GeomShapePtr aNewShape = *aNewShapesIt;
 705       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 706
 707       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 708       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 709       if (aNewShapeIsSameAsOldShape || aNewShapeIsNotInResultShape) {
 710         continue;
 711       }
 712
 713       if (aResultShape->isSame(aNewShape))
 714         continue; // it is stored on the root level
 715
 716       TopAbs_ShapeEnum aNewShapeType = aNewShape_.ShapeType();
 717       if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 718         // TODO: This is a workaround. New shape should be only edge or face.
 719         TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE
 720                                                                             : TopAbs_FACE;
 721         int aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 722         for (TopExp_Explorer anExp(aNewShape_, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 723           builder(aTag)->Generated(anOldSubShape_, anExp.Current());
 724           // store information about the external document reference to restore old shape on open
 725           storeExternalReference(anOriginalLabel, builder(aTag)->NamedShape()->Label());
 726         }
 727         buildName(aTag, theName);
 728       } else {
 729         int aTag = getGenerationTag(aNewShape_);
 730         if (aTag == INVALID_TAG) return;
 731         builder(aTag)->Generated(anOldSubShape_, aNewShape_);
 732         buildName(aTag, theName);
 733         // store information about the external document reference to restore old shape on open
 734         storeExternalReference(anOriginalLabel, builder(aTag)->NamedShape()->Label());
 735       }
 736     }
 737   }
 738 }
 739
 740 // LCOV_EXCL_START
 741 //=======================================================================
 742 int getDangleShapes(const TopoDS_Shape&           theShapeIn,
 743   const TopAbs_ShapeEnum        theGeneratedFrom,
 744   TopTools_DataMapOfShapeShape& theDangles)
 745 {
 746   theDangles.Clear();
 747   TopTools_IndexedDataMapOfShapeListOfShape subShapeAndAncestors;
 748   TopAbs_ShapeEnum GeneratedTo;
 749   if (theGeneratedFrom == TopAbs_FACE) GeneratedTo = TopAbs_EDGE;
 750   else if (theGeneratedFrom == TopAbs_EDGE) GeneratedTo = TopAbs_VERTEX;
 751   else return Standard_False;
 752   TopExp::MapShapesAndAncestors(theShapeIn, GeneratedTo, theGeneratedFrom, subShapeAndAncestors);
 753   for (Standard_Integer i = 1; i <= subShapeAndAncestors.Extent(); i++) {
 754     const TopoDS_Shape& mayBeDangle = subShapeAndAncestors.FindKey(i);
 755     const TopTools_ListOfShape& ancestors = subShapeAndAncestors.FindFromIndex(i);
 756     if (ancestors.Extent() == 1) theDangles.Bind(ancestors.First(), mayBeDangle);
 757   }
 758   return theDangles.Extent();
 759 }
 760
 761 //=======================================================================
 762 void loadGeneratedDangleShapes(
 763   const TopoDS_Shape&      theShapeIn,
 764   const TopAbs_ShapeEnum   theGeneratedFrom,
 765   TNaming_Builder *        theBuilder)
 766 {
 767   TopTools_DataMapOfShapeShape dangles;
 768   if (!getDangleShapes(theShapeIn, theGeneratedFrom, dangles)) return;
 769   TopTools_DataMapIteratorOfDataMapOfShapeShape itr(dangles);
 770   for (; itr.More(); itr.Next())
 771     theBuilder->Generated(itr.Key(), itr.Value());
 772 }
 773 // LCOV_EXCL_STOP
 774
 775 //=======================================================================
 776 void Model_BodyBuilder::loadNextLevels(GeomShapePtr theShape,
 777                                        const std::string& theName)
 778 {
 779   if(theShape->isNull()) return;
 780   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 781   std::string aName;
 782   if (aShape.ShapeType() == TopAbs_SOLID) {
 783     TopExp_Explorer expl(aShape, TopAbs_FACE);
 784     for (; expl.More(); expl.Next()) {
 785       builder(myFreePrimitiveTag)->Generated(expl.Current());
 786       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 787       aName = theName + "_" + aStr.ToCString();
 788       buildName(myFreePrimitiveTag, aName);
 789       ++myFreePrimitiveTag;
 790     }
 791   }
 792   else if (aShape.ShapeType() == TopAbs_SHELL || aShape.ShapeType() == TopAbs_FACE) {
 793     // load faces and all the free edges
 794     TopTools_IndexedMapOfShape Faces;
 795     TopExp::MapShapes(aShape, TopAbs_FACE, Faces);
 796     if (Faces.Extent() > 1 || (aShape.ShapeType() == TopAbs_SHELL && Faces.Extent() == 1)) {
 797       TopExp_Explorer expl(aShape, TopAbs_FACE);
 798       for (; expl.More(); expl.Next()) {
 799         builder(myFreePrimitiveTag)->Generated(expl.Current());
 800         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 801         aName = theName + "_" + aStr.ToCString();
 802         buildName(myFreePrimitiveTag, aName);
 803         ++myFreePrimitiveTag;
 804       }
 805     }
 806     TopTools_IndexedDataMapOfShapeListOfShape anEdgeAndNeighbourFaces;
 807     TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, anEdgeAndNeighbourFaces);
 808     for (Standard_Integer i = 1; i <= anEdgeAndNeighbourFaces.Extent(); i++)
 809     {
 810       const TopTools_ListOfShape& aLL = anEdgeAndNeighbourFaces.FindFromIndex(i);
 811       if (aLL.Extent() < 2) {
 812         if (BRep_Tool::Degenerated(TopoDS::Edge(anEdgeAndNeighbourFaces.FindKey(i))))
 813           continue;
 814         builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 815         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 816         aName = theName + "_" + aStr.ToCString();
 817         buildName(myFreePrimitiveTag, aName);
 818         ++myFreePrimitiveTag;
 819       } else {
 820         TopTools_ListIteratorOfListOfShape anIter(aLL);
 821         const TopoDS_Face& aFace = TopoDS::Face(anIter.Value());
 822         anIter.Next();
 823         if(aFace.IsEqual(anIter.Value())) {
 824           builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 825           TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 826           aName = theName + "_" + aStr.ToCString();
 827           buildName(myFreePrimitiveTag, aName);
 828           ++myFreePrimitiveTag;
 829         }
 830       }
 831     }
 832   } else if (aShape.ShapeType() == TopAbs_WIRE) {
 833     TopTools_IndexedMapOfShape Edges;
 834     BRepTools::Map3DEdges(aShape, Edges);
 835     if (Edges.Extent() == 1) {
 836       builder(myFreePrimitiveTag++)->Generated(Edges.FindKey(1));
 837       TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 838       for (; expl.More(); expl.Next()) {
 839         builder(myFreePrimitiveTag)->Generated(expl.Current());
 840         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 841         aName = theName + "_" + aStr.ToCString();
 842         buildName(myFreePrimitiveTag, aName);
 843         ++myFreePrimitiveTag;
 844       }
 845     } else {
 846       TopExp_Explorer expl(aShape, TopAbs_EDGE);
 847       for (; expl.More(); expl.Next()) {
 848         builder(myFreePrimitiveTag)->Generated(expl.Current());
 849         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 850         aName = theName + "_" + aStr.ToCString();
 851         buildName(myFreePrimitiveTag, aName);
 852         ++myFreePrimitiveTag;
 853       }
 854       // and load generated vertices.
 855       TopTools_DataMapOfShapeShape generated;
 856       if (getDangleShapes(aShape, TopAbs_EDGE, generated))
 857       {
 858         TNaming_Builder* pBuilder = builder(myFreePrimitiveTag++);
 859         loadGeneratedDangleShapes(aShape, TopAbs_EDGE, pBuilder);
 860       }
 861     }
 862   } else if (aShape.ShapeType() == TopAbs_EDGE) {
 863     TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 864     for (; expl.More(); expl.Next()) {
 865       builder(myFreePrimitiveTag)->Generated(expl.Current());
 866       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 867       aName = theName + "_" + aStr.ToCString();
 868       buildName(myFreePrimitiveTag, aName);
 869       ++myFreePrimitiveTag;
 870     }
 871   }
 872 }
 873
 874 //=======================================================================
 875 int findAmbiguities(const TopoDS_Shape&           theShapeIn,
 876   TopTools_ListOfShape&   theList)
 877 {
 878   theList.Clear();
 879   // edges -> ancestor faces list
 880   TopTools_IndexedDataMapOfShapeListOfShape aSubShapeAndAncestors;
 881   TopExp::MapShapesAndAncestors(theShapeIn, TopAbs_EDGE, TopAbs_FACE, aSubShapeAndAncestors);
 882   // keeps the shapes which are already in the resulting list
 883   TopTools_MapOfShape alreadyThere;
 884   // map from faces identifier (combination of hash-codes) to list of edges produced such ID
 885   NCollection_DataMap<int, NCollection_List<TopoDS_Shape> > aFacesIDs;
 886
 887   TopTools_IndexedDataMapOfShapeListOfShape::Iterator anAncestorsIter(aSubShapeAndAncestors);
 888   for (; anAncestorsIter.More(); anAncestorsIter.Next()) {
 889     const TopTools_ListOfShape& ancestors = anAncestorsIter.Value();
 890     if (ancestors.Extent() < 2)
 891       continue;
 892     Standard_Integer anID = 0;
 893     for(TopTools_ListIteratorOfListOfShape aFaceIt(ancestors); aFaceIt.More(); aFaceIt.Next()) {
 894       anID ^= HashCode(aFaceIt.ChangeValue(), 1990657); // Pierpont prime
 895     }
 896     if (aFacesIDs.IsBound(anID)) { // there found same edge, check they really have same faces
 897       const NCollection_List<TopoDS_Shape>& aSameFaces1 =
 898         aSubShapeAndAncestors.FindFromKey(anAncestorsIter.Key());
 899       NCollection_List<TopoDS_Shape>::Iterator aSameEdge(aFacesIDs.ChangeFind(anID));
 900       for(; aSameEdge.More(); aSameEdge.Next()) {
 901         const NCollection_List<TopoDS_Shape>& aSameFaces2 =
 902           aSubShapeAndAncestors.FindFromKey(aSameEdge.Value());
 903         if (aSameFaces2.Extent() != aSameFaces1.Extent()) // the number of faces is different
 904           break;
 905
 906         NCollection_List<TopoDS_Shape>::Iterator aFaceIter1(aSameFaces1);
 907         for(; aFaceIter1.More(); aFaceIter1.Next()) {
 908           NCollection_List<TopoDS_Shape>::Iterator aFaceIter2(aSameFaces2);
 909           for(; aFaceIter2.More(); aFaceIter2.Next()) {
 910             if (aFaceIter1.Value().IsSame(aFaceIter2.Value()))
 911               break;
 912           }
 913           if (!aFaceIter2.More()) // aFaceIter1 contains a face, which is not in aFaceIter2
 914             break;
 915         }
 916         if (!aFaceIter1.More()) { // all the faces are same => put to the result
 917           if (alreadyThere.Add(aSameEdge.Value()))
 918             theList.Append(aSameEdge.Value());
 919           if (alreadyThere.Add(anAncestorsIter.Key()))
 920             theList.Append(anAncestorsIter.Key());
 921         }
 922       }
 923     } else { // ID is unique, just add this edge
 924       aFacesIDs.Bind(anID, NCollection_List<TopoDS_Shape>());
 925     }
 926     aFacesIDs.ChangeFind(anID).Append(anAncestorsIter.Key()); // add to the list anyway
 927   }
 928   return theList.Extent();
 929 }
 930
 931 //=======================================================================
 932 void Model_BodyBuilder::loadFirstLevel(GeomShapePtr theShape, const std::string& theName)
 933 {
 934   if(theShape->isNull()) return;
 935   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 936   std::string aName;
 937   if (aShape.ShapeType() == TopAbs_COMPOUND || aShape.ShapeType() == TopAbs_COMPSOLID) {
 938     TopoDS_Iterator itr(aShape);
 939     for (; itr.More(); itr.Next()) {
 940       builder(myFreePrimitiveTag)->Generated(itr.Value());
 941       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 942       aName = theName + "_" + aStr.ToCString();
 943       buildName(myFreePrimitiveTag, aName);
 944       ++myFreePrimitiveTag;
 945       if (itr.Value().ShapeType() == TopAbs_COMPOUND ||
 946         itr.Value().ShapeType() == TopAbs_COMPSOLID)
 947       {
 948         GeomShapePtr itrShape(new GeomAPI_Shape());
 949         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 950         loadFirstLevel(itrShape, theName);
 951       } else {
 952         GeomShapePtr itrShape(new GeomAPI_Shape());
 953         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 954         loadNextLevels(itrShape, theName);
 955       }
 956     }
 957   } else {
 958     GeomShapePtr itrShape(new GeomAPI_Shape());
 959     itrShape->setImpl(new TopoDS_Shape(aShape));
 960     loadNextLevels(itrShape, theName);
 961   }
 962   TopTools_ListOfShape   aList;
 963   if(findAmbiguities(aShape, aList)) {
 964     TopTools_ListIteratorOfListOfShape it(aList);
 965     for (; it.More(); it.Next(), ++myFreePrimitiveTag) {
 966       builder(myFreePrimitiveTag)->Generated(it.Value());
 967       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 968       aName = theName + "_" + aStr.ToCString();
 969       buildName(myFreePrimitiveTag, aName);
 970     }
 971   }
 972 }
 973
 974 GeomShapePtr Model_BodyBuilder::shape()
 975 {
 976   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 977   if (aData && aData->isValid()) {
 978     TDF_Label aShapeLab = aData->shapeLab();
 979     Handle(TDF_Reference) aRef;
 980     if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
 981       aShapeLab = aRef->Get();
 982     }
 983     Handle(TNaming_NamedShape) aName;
 984     if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
 985       TopoDS_Shape aShape = aName->Get();
 986       if (!aShape.IsNull()) {
 987         GeomShapePtr aRes(new GeomAPI_Shape);
 988         aRes->setImpl(new TopoDS_Shape(aShape));
 989         return aRes;
 990       }
 991     }
 992   }
 993   return GeomShapePtr();
 994 }