src/Model/Model_BodyBuilder.cpp

   1 // Copyright (C) 2014-2020  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 <Locale_Convert.h>
  23
  24 #include <Model_Data.h>
  25 #include <Model_Document.h>
  26 #include <ModelAPI_Session.h>
  27 #include <TNaming_Builder.hxx>
  28 #include <TNaming_NamedShape.hxx>
  29 #include <TNaming_Iterator.hxx>
  30 #include <TNaming_Tool.hxx>
  31 #include <TNaming_SameShapeIterator.hxx>
  32 #include <TDataStd_Name.hxx>
  33 #include <TDataStd_Integer.hxx>
  34 #include <TDataStd_ExtStringList.hxx>
  35 #include <TopoDS.hxx>
  36 #include <TopoDS_Face.hxx>
  37 #include <TDF_ChildIterator.hxx>
  38 #include <TDF_ChildIDIterator.hxx>
  39 #include <TDF_Reference.hxx>
  40 #include <TDF_Tool.hxx>
  41 #include <TopTools_MapOfShape.hxx>
  42 #include <TopExp_Explorer.hxx>
  43 #include <TopTools_ListOfShape.hxx>
  44 #include <TopTools_ListIteratorOfListOfShape.hxx>
  45 #include <TopTools_DataMapOfShapeListOfShape.hxx>
  46 #include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
  47 #include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
  48 #include <TopTools_MapIteratorOfMapOfShape.hxx>
  49 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
  50 #include <TopTools_IndexedMapOfShape.hxx>
  51 #include <TopTools_DataMapOfShapeShape.hxx>
  52 #include <TopExp.hxx>
  53 #include <BRepTools.hxx>
  54 #include <BRep_Tool.hxx>
  55 #include <BRepTools_History.hxx>
  56 #include <GeomAPI_Shape.h>
  57 #include <GeomAPI_ShapeExplorer.h>
  58 #include <GeomAlgoAPI_MakeShape.h>
  59 #include <GeomAlgoAPI_SortListOfShapes.h>
  60 #include <Config_PropManager.h>
  61 // DEB
  62 //#include <TCollection_AsciiString.hxx>
  63 //#define DEB_IMPORT 1
  64
  65 /// reference to the shape in external document: sting list attribute identifier
  66 static const Standard_GUID kEXTERNAL_SHAPE_REF("9aa5dd14-6d34-4a8d-8786-05842fd7bbbd");
  67
  68 static const int INVALID_TAG            = -1;
  69 static const int GENERATED_VERTICES_TAG = 1;
  70 static const int GENERATED_EDGES_TAG    = 2;
  71 static const int GENERATED_FACES_TAG    = 3;
  72 static const int MODIFIED_VERTICES_TAG  = 4;
  73 static const int MODIFIED_EDGES_TAG     = 5;
  74 static const int MODIFIED_FACES_TAG     = 6;
  75 static const int DELETED_TAG            = 7;
  76 static const int PRIMITIVES_START_TAG   = 11;
  77
  78 static int getGenerationTag(const TopoDS_Shape& theShape) {
  79   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
  80   switch (aShapeType) {
  81     case TopAbs_VERTEX: return GENERATED_VERTICES_TAG;
  82     case TopAbs_EDGE:   return GENERATED_EDGES_TAG;
  83     case TopAbs_FACE:   return GENERATED_FACES_TAG;
  84     default: break; // [to avoid compilation warning]
  85   }
  86
  87   return INVALID_TAG;
  88 }
  89
  90 static int getModificationTag(const TopoDS_Shape& theShape) {
  91   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
  92   switch (aShapeType) {
  93     case TopAbs_VERTEX: return MODIFIED_VERTICES_TAG;
  94     case TopAbs_EDGE:   return MODIFIED_EDGES_TAG;
  95     case TopAbs_FACE:   return MODIFIED_FACES_TAG;
  96     default: break; // [to avoid compilation warning]
  97   }
  98
  99   return INVALID_TAG;
 100 }
 101
 102 static bool isAlreadyStored(const TNaming_Builder* theBuilder,
 103                             const TopoDS_Shape& theOldShape,
 104                             const TopoDS_Shape& theNewShape)
 105 {
 106   for (TNaming_Iterator aNamingIt(theBuilder->NamedShape());
 107     aNamingIt.More();
 108     aNamingIt.Next())
 109   {
 110     if (aNamingIt.NewShape().IsSame(theNewShape)
 111       && aNamingIt.OldShape().IsSame(theOldShape))
 112     {
 113       return true;
 114     }
 115   }
 116
 117   return false;
 118 }
 119
 120 Model_BodyBuilder::Model_BodyBuilder(ModelAPI_Object* theOwner)
 121 : ModelAPI_BodyBuilder(theOwner),
 122   myFreePrimitiveTag(PRIMITIVES_START_TAG)
 123 {
 124 }
 125
 126 /// Checks that shape is presented in the tree with not-selection evolution
 127 /// In theOriginalLabel it returns label where NS of old sub-shape is stored
 128 static bool isShapeInTree(const TDF_Label& theAccess1, const TDF_Label& theAccess2,
 129   TopoDS_Shape theShape, TDF_Label& theOriginalLabel)
 130 {
 131   bool aResult = TNaming_Tool::HasLabel(theAccess1, theShape);
 132   if (aResult) { //check evolution and a label of this shape
 133     for(TNaming_SameShapeIterator aShapes(theShape, theAccess1); aShapes.More(); aShapes.Next())
 134     {
 135       static Handle(TNaming_NamedShape) aNS;
 136       if (aShapes.Label().FindAttribute(TNaming_NamedShape::GetID(), aNS)) {
 137         if (aNS->Evolution() != TNaming_SELECTED) {
 138           theOriginalLabel = aNS->Label();
 139           return true;
 140         }
 141       }
 142     }
 143   }
 144   if (!theAccess2.IsNull()) {
 145     static const TDF_Label anEmpty;
 146     return isShapeInTree(theAccess2, anEmpty, theShape, theOriginalLabel);
 147   }
 148   return false;
 149 }
 150
 151 /// Stores entry to the external label in the entries list at this label
 152 static void storeExternalReference(const TDF_Label& theExternal, const TDF_Label theThis)
 153 {
 154   // store information about the external document reference to restore old shape on open
 155   if (!theExternal.IsNull() && !theExternal.Root().IsEqual(theThis.Root())) {
 156     Handle(TDataStd_ExtStringList) anEntries;
 157     if (!theThis.FindAttribute(kEXTERNAL_SHAPE_REF, anEntries)) {
 158       anEntries = TDataStd_ExtStringList::Set(theThis, kEXTERNAL_SHAPE_REF);
 159     }
 160     TCollection_AsciiString anEntry;
 161     TDF_Tool::Entry(theExternal, anEntry);
 162     // check it already contains this entry
 163     TDataStd_ListOfExtendedString::Iterator anIter(anEntries->List());
 164     for(; anIter.More(); anIter.Next())
 165       if (anIter.Value() == anEntry)
 166         break;
 167     if (!anIter.More()) {
 168       anEntries->Append(anEntry);
 169     }
 170   }
 171 }
 172
 173 void Model_BodyBuilder::store(const GeomShapePtr& theShape,
 174                               const bool theIsStoreSameShapes)
 175 {
 176   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 177   if (aData) {
 178     TDF_Label aShapeLab = aData->shapeLab();
 179     // clean builders
 180     clean();
 181     // store the new shape as primitive
 182     TNaming_Builder aBuilder(aShapeLab);
 183     if (!theShape)
 184       return;  // bad shape
 185     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 186     if (aShape.IsNull())
 187       return;  // null shape inside
 188
 189     if(!theIsStoreSameShapes) {
 190       Handle(TNaming_NamedShape) aNS;
 191       if (TNaming_Tool::HasLabel(aShapeLab, aShape))
 192         aNS = TNaming_Tool::NamedShape(aShape, aShapeLab);
 193       // the last condition is for the issue 2751 : existing shape may be found in compound-NS
 194       if(!aNS.IsNull() && !aNS->IsEmpty() && aNS->Get().IsSame(aShape)) {
 195         // This shape is already in document, store reference instead of shape;
 196         const TDF_Label aFoundLabel = aNS->Label();
 197         TDF_Reference::Set(aShapeLab, aFoundLabel);
 198         aShapeLab.ForgetAttribute(TNaming_NamedShape::GetID());
 199         return;
 200       }
 201     }
 202
 203     aBuilder.Generated(aShape);
 204     // register name
 205     aShapeLab.ForgetAttribute(TDF_Reference::GetID());
 206     if(!aBuilder.NamedShape()->IsEmpty()) {
 207       Handle(TDataStd_Name) anAttr;
 208       if(aBuilder.NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 209         std::wstring aName = Locale::Convert::toWString(anAttr->Get().ToExtString());
 210         if(!aName.empty()) {
 211           std::shared_ptr<Model_Document> aDoc =
 212             std::dynamic_pointer_cast<Model_Document>(document());
 213           aDoc->addNamingName(aBuilder.NamedShape()->Label(), aName);
 214         }
 215       }
 216     }
 217   }
 218 }
 219
 220 void Model_BodyBuilder::storeGenerated(const GeomShapePtr& theFromShape,
 221   const GeomShapePtr& theToShape, const bool theIsCleanStored)
 222 {
 223   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 224   if (aData) {
 225     // clean builders
 226     if (theIsCleanStored)
 227       clean();
 228     TNaming_Builder* aBuilder = builder(0);
 229     if (!theFromShape || !theToShape)
 230       return;  // bad shape
 231     TopoDS_Shape aShapeBasis = theFromShape->impl<TopoDS_Shape>();
 232     if (aShapeBasis.IsNull())
 233       return;  // null shape inside
 234     TopoDS_Shape aShapeNew = theToShape->impl<TopoDS_Shape>();
 235     if (aShapeNew.IsNull())
 236       return;  // null shape inside
 237
 238     // There is no sense to write history if old shape does not exist in the document.
 239     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 240       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 241     TDF_Label anOriginalLabel;
 242     if (!isShapeInTree(aData->shapeLab(), anAccess2, aShapeBasis, anOriginalLabel)) {
 243       if (aBuilder->NamedShape()->Get().IsNull()) { // store as primitive if alone anyway
 244         aBuilder->Generated(aShapeNew);
 245       }
 246     } else {
 247       if (aBuilder->NamedShape()->Evolution() == TNaming_PRIMITIVE) { // erase primitive before
 248         myBuilders.erase(0);
 249         aBuilder = builder(0);
 250       }
 251
 252       aBuilder->Generated(aShapeBasis, aShapeNew);
 253       // store information about the external document reference to restore old shape on open
 254       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 255     }
 256
 257     // register name
 258     if(!aBuilder->NamedShape()->IsEmpty()) {
 259       Handle(TDataStd_Name) anAttr;
 260       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 261         std::wstring aName = Locale::Convert::toWString(anAttr->Get().ToExtString());
 262         if(!aName.empty()) {
 263           std::shared_ptr<Model_Document> aDoc =
 264             std::dynamic_pointer_cast<Model_Document>(document());
 265           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 266         }
 267       }
 268     }
 269   }
 270 }
 271
 272 void Model_BodyBuilder::storeGenerated(const std::list<GeomShapePtr>& theFromShapes,
 273   const GeomShapePtr& theToShape, const std::shared_ptr<GeomAlgoAPI_MakeShape> theMakeShape)
 274 {
 275   bool aStored = false;
 276   std::list<GeomShapePtr>::const_iterator anOldIter = theFromShapes.cbegin();
 277   for (; anOldIter != theFromShapes.cend(); anOldIter++) {
 278     bool aStore = (*anOldIter)->isCompound() || (*anOldIter)->isShell() || (*anOldIter)->isWire();
 279     if (!aStore) {
 280       ListOfShape aNews; // check this old really generates theToShape
 281       theMakeShape->generated(*anOldIter, aNews);
 282       ListOfShape::iterator aNewIter = aNews.begin();
 283       for (; aNewIter != aNews.end(); aNewIter++) {
 284         if (theToShape->isSame(*aNewIter))
 285           break;
 286       }
 287       aStore = aNewIter != aNews.end();
 288     }
 289     if (aStore) {
 290       storeGenerated(*anOldIter, theToShape, !aStored);
 291       TNaming_Builder* aBuilder = builder(0);
 292       aStored = !aBuilder->NamedShape()->IsEmpty();
 293     }
 294   }
 295   if (!aStored) { // store as PRIMITIVE, but clean in any way
 296     store(theToShape);
 297     return;
 298   }
 299 }
 300
 301 static TDF_Label builderLabel(DataPtr theData, const int theTag )
 302 {
 303   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(theData);
 304   return theTag == 0 ? aData->shapeLab() : aData->shapeLab().FindChild(theTag);
 305 }
 306
 307 TNaming_Builder* Model_BodyBuilder::builder(const int theTag)
 308 {
 309   std::map<int, TNaming_Builder*>::iterator aFind = myBuilders.find(theTag);
 310   if (aFind == myBuilders.end()) {
 311     myBuilders[theTag] = new TNaming_Builder(builderLabel(data(), theTag));
 312     aFind = myBuilders.find(theTag);
 313   }
 314   return aFind->second;
 315 }
 316
 317 void Model_BodyBuilder::storeModified(const GeomShapePtr& theOldShape,
 318                                       const GeomShapePtr& theNewShape,
 319                                       const bool theIsCleanStored)
 320 {
 321   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 322   if (aData) {
 323     // clean builders
 324     if (theIsCleanStored) clean();
 325     TNaming_Builder* aBuilder = builder(0);
 326     if (!theOldShape || !theNewShape)
 327       return;  // bad shape
 328     TopoDS_Shape aShapeOld = theOldShape->impl<TopoDS_Shape>();
 329     if (aShapeOld.IsNull())
 330       return;  // null shape inside
 331     TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 332     if (aShapeNew.IsNull())
 333       return;  // null shape inside
 334
 335     // There is no sense to write history if old shape does not exist in the document.
 336     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 337       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 338     TDF_Label anOriginalLabel;
 339     TopTools_ListOfShape anOldList;
 340     if (!isShapeInTree(aData->shapeLab(), anAccess2, aShapeOld, anOriginalLabel)) {
 341       if (aShapeOld.ShapeType() == TopAbs_COMPOUND)  { // check this could be a compund by a whole feature selection
 342         for(TopoDS_Iterator aCompIter(aShapeOld); aCompIter.More(); aCompIter.Next()) {
 343           if (isShapeInTree(aData->shapeLab(), anAccess2, aCompIter.Value(), anOriginalLabel)) {
 344             anOldList.Append(aCompIter.Value());
 345           } else {
 346             anOldList.Clear();
 347             break;
 348           }
 349         }
 350       }
 351     } else {
 352       anOldList.Append(aShapeOld);
 353     }
 354     if (anOldList.IsEmpty()) {
 355       if (aBuilder->NamedShape()->Get().IsNull()) { // store as primitive if alone anyway
 356         aBuilder->Generated(aShapeNew);
 357       }
 358     } else {
 359       if (aBuilder->NamedShape()->Evolution() == TNaming_PRIMITIVE) { // erase primitive before
 360         myBuilders.erase(0);
 361         aBuilder = builder(0);
 362       }
 363       TopTools_ListIteratorOfListOfShape anOldIter(anOldList);
 364       for(; anOldIter.More(); anOldIter.Next()) {
 365         aBuilder->Modify(anOldIter.Value(), aShapeNew);
 366       }
 367       // store information about the external document reference to restore old shape on open
 368       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 369     }
 370
 371     if(!aBuilder->NamedShape()->IsEmpty()) {
 372       Handle(TDataStd_Name) anAttr;
 373       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(), anAttr)) {
 374         std::wstring aName = Locale::Convert::toWString(anAttr->Get().ToExtString());
 375         if(!aName.empty()) {
 376           std::shared_ptr<Model_Document> aDoc =
 377             std::dynamic_pointer_cast<Model_Document>(document());
 378           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 379         }
 380       }
 381     }
 382   }
 383 }
 384
 385 void Model_BodyBuilder::storeModified(const std::list<GeomShapePtr>& theOldShapes,
 386   const GeomShapePtr& theNewShape, const std::shared_ptr<GeomAlgoAPI_MakeShape> theMakeShape)
 387 {
 388   bool aStored = false;
 389   std::list<GeomShapePtr>::const_iterator anOldIter = theOldShapes.cbegin();
 390   for(; anOldIter != theOldShapes.cend(); anOldIter++) {
 391     // compounds may cause crash if call "modified"
 392     bool aStore = (*anOldIter)->isCompound() || (*anOldIter)->isShell() || (*anOldIter)->isWire() ||
 393                 (*anOldIter)->isCompSolid();
 394     if (!aStore) {
 395       ListOfShape aNews; // check this old really modifies theNewShape
 396       theMakeShape->modified(*anOldIter, aNews);
 397       ListOfShape::iterator aNewIter = aNews.begin();
 398       for(; aNewIter != aNews.end(); aNewIter++) {
 399         if (theNewShape->isSame(*aNewIter))
 400           break;
 401       }
 402       aStore = aNewIter != aNews.end();
 403     }
 404     if (aStore) {
 405       storeModified(*anOldIter, theNewShape, !aStored);
 406       TNaming_Builder* aBuilder = builder(0);
 407       aStored = !aBuilder->NamedShape()->IsEmpty();
 408     }
 409   }
 410   if (!aStored) {
 411     // check the new shape is already in the tree, so, no need to store primitive, just reference
 412     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 413     if (aData.get()) {
 414       TDF_Label aShapeLab = aData->shapeLab();
 415       TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 416       Handle(TNaming_NamedShape) aNS;
 417       if (TNaming_Tool::HasLabel(aShapeLab, aShapeNew))
 418         aNS = TNaming_Tool::NamedShape(aShapeNew, aShapeLab);
 419       // the last condition is for the issue 2751 : existing shape may be found in compound-NS
 420       if (!aNS.IsNull() && !aNS->IsEmpty() && aNS->Get().IsSame(aShapeNew)) {
 421         // This shape is already in document, store reference instead of shape;
 422         const TDF_Label aFoundLabel = aNS->Label();
 423         TDF_Reference::Set(aShapeLab, aFoundLabel);
 424         myBuilders.erase(0);
 425         aShapeLab.ForgetAttribute(TNaming_NamedShape::GetID());
 426         return;
 427       }
 428     }
 429     store(theNewShape); // store as PRIMITIVE, but clean in any way
 430     return;
 431   }
 432 }
 433
 434 void Model_BodyBuilder::clean()
 435 {
 436   TDF_Label aLab = std::dynamic_pointer_cast<Model_Data>(data())->shapeLab();
 437   if (aLab.IsNull())
 438     return;
 439   std::map<int, TNaming_Builder*>::iterator aBuilder = myBuilders.begin();
 440   for(; aBuilder != myBuilders.end(); aBuilder++) {
 441     Handle(TNaming_NamedShape) aNS = aBuilder->second->NamedShape();
 442     delete aBuilder->second;
 443     if (!aNS.IsNull() && !aNS->Label().IsNull())
 444       aNS->Label().ForgetAttribute(TNaming_NamedShape::GetID());
 445   }
 446   myBuilders.clear();
 447   myPrimitivesNamesIndexMap.clear();
 448   // remove the old reference (if any)
 449   aLab.ForgetAttribute(TDF_Reference::GetID());
 450   myFreePrimitiveTag = PRIMITIVES_START_TAG;
 451   TDF_ChildIDIterator anEntriesIter(aLab, kEXTERNAL_SHAPE_REF, true);
 452   for(; anEntriesIter.More(); anEntriesIter.Next()) {
 453     anEntriesIter.Value()->Label().ForgetAttribute(kEXTERNAL_SHAPE_REF);
 454   }
 455 }
 456
 457 void Model_BodyBuilder::cleanCash()
 458 {
 459   myPrimitivesNamesIndexMap.clear();
 460 }
 461
 462 Model_BodyBuilder::~Model_BodyBuilder()
 463 {
 464   clean();
 465 }
 466
 467 void Model_BodyBuilder::buildName(const int theTag, const std::string& theName)
 468 {
 469   std::string aName = theName;
 470   std::string aPrefix = "";
 471   switch (theTag) {
 472     case GENERATED_VERTICES_TAG: aPrefix = aName.empty() ? "Generated_Vertex" : "GV:"; break;
 473     case GENERATED_EDGES_TAG:    aPrefix = aName.empty() ? "Generated_Edge"   : "GE:"; break;
 474     case GENERATED_FACES_TAG:    aPrefix = aName.empty() ? "Generated_Face"   : "GF:"; break;
 475     case MODIFIED_VERTICES_TAG:  aPrefix = aName.empty() ? "Modified_Vertex"  : "MV:"; break;
 476     case MODIFIED_EDGES_TAG:     aPrefix = aName.empty() ? "Modified_Edge"    : "ME:"; break;
 477     case MODIFIED_FACES_TAG:     aPrefix = aName.empty() ? "Modified_Face"    : "MF:"; break;
 478   }
 479   aName.insert(0, aPrefix);
 480
 481   TDataStd_Name::Set(builderLabel(data(), theTag), aName.c_str());
 482 }
 483 bool Model_BodyBuilder::generated(const GeomShapePtr& theNewShape,
 484                                   const std::string& theName,
 485                                   const bool theCheckIsInResult)
 486 {
 487   GeomShapePtr aResultShape = shape();
 488   if (theCheckIsInResult) {
 489     bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(theNewShape, false);
 490     if (aNewShapeIsNotInResultShape) {
 491       return false;
 492     }
 493   }
 494
 495   TopoDS_Shape aShape = theNewShape->impl<TopoDS_Shape>();
 496   builder(myFreePrimitiveTag)->Generated(aShape);
 497   if (!theName.empty()) {
 498     std::string aName = theName;
 499     if (myPrimitivesNamesIndexMap.find(theName) != myPrimitivesNamesIndexMap.end()) {
 500       IndexTags& anIndexTags = myPrimitivesNamesIndexMap.find(theName)->second;
 501       aName += "_" + std::to_string(++(anIndexTags.index));
 502       anIndexTags.tags.push_back(myFreePrimitiveTag);
 503       if (anIndexTags.index == 2) {
 504         buildName(anIndexTags.tags.front(), theName + "_1");
 505       }
 506     }
 507     else {
 508       IndexTags anIndexTags;
 509       anIndexTags.index = 1;
 510       anIndexTags.tags.push_back(myFreePrimitiveTag);
 511       myPrimitivesNamesIndexMap[theName] = anIndexTags;
 512     }
 513
 514     buildName(myFreePrimitiveTag, aName);
 515   }
 516   ++myFreePrimitiveTag;
 517   return true;
 518 }
 519
 520 void Model_BodyBuilder::generated(const GeomShapePtr& theOldShape,
 521                                   const GeomShapePtr& theNewShape,
 522                                   const std::string& theName)
 523 {
 524   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 525   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 526   TopAbs_ShapeEnum aNewShapeType = aNewShape.ShapeType();
 527   int aTag;
 528   if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 529     // TODO: This is a workaround. New shape should be only vertex, edge or face.
 530     TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE : TopAbs_FACE;
 531     aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 532     for (TopExp_Explorer anExp(aNewShape, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 533       builder(aTag)->Generated(anOldShape, anExp.Current());
 534     }
 535     buildName(aTag, theName);
 536   } else {
 537     aTag = getGenerationTag(aNewShape);
 538     if (aTag == INVALID_TAG) return;
 539     builder(aTag)->Generated(anOldShape, aNewShape);
 540     buildName(aTag, theName);
 541   }
 542 }
 543
 544 void Model_BodyBuilder::modified(const GeomShapePtr& theOldShape,
 545                                  const GeomShapePtr& theNewShape,
 546                                  const std::string& theName)
 547 {
 548   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 549   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 550   int aTag = getModificationTag(aNewShape);
 551   if (aTag == INVALID_TAG) return;
 552   builder(aTag)->Modify(anOldShape, aNewShape);
 553   buildName(aTag, theName);
 554 }
 555
 556 void Model_BodyBuilder::loadDeletedShapes(const GeomMakeShapePtr& theAlgo,
 557                                           const GeomShapePtr& theOldShape,
 558                                           const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 559                                           const GeomShapePtr& theShapesToExclude)
 560 {
 561   TopTools_MapOfShape anAlreadyProcessedShapes;
 562   GeomShapePtr aResultShape = shape();
 563   for (GeomAPI_ShapeExplorer anExp(theOldShape, theShapeTypeToExplore);
 564        anExp.more();
 565        anExp.next())
 566   {
 567     GeomShapePtr anOldSubShape = anExp.current();
 568     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 569     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)
 570         || !theAlgo->isDeleted(anOldSubShape)
 571         || aResultShape->isSubShape(anOldSubShape, false)
 572         || (theShapesToExclude.get() && theShapesToExclude->isSubShape(anOldSubShape, false)))
 573     {
 574       continue;
 575     }
 576
 577     ListOfShape aNewShapes;
 578     if (BRepTools_History::IsSupportedType(anOldSubShape_)) { // to avoid crash in #2572
 579       theAlgo->modified(anOldSubShape, aNewShapes);
 580     }
 581
 582     if (aNewShapes.size() == 0
 583         || (aNewShapes.size() == 1 && aNewShapes.front()->isSame(anOldSubShape))) {
 584       builder(DELETED_TAG)->Delete(anOldSubShape_);
 585     }
 586   }
 587 }
 588
 589 // Keep only the shapes with minimal shape type
 590 static void keepTopLevelShapes(ListOfShape& theShapes,
 591                                const TopoDS_Shape& theRoot,
 592                                const GeomShapePtr& theResultShape = GeomShapePtr())
 593 {
 594   GeomAPI_Shape::ShapeType aKeepShapeType = GeomAPI_Shape::SHAPE;
 595   ListOfShape::iterator anIt = theShapes.begin();
 596   while (anIt != theShapes.end()) {
 597     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 598     bool aSkip = aNewShape.IsNull() ||
 599       (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 600     if (aSkip || theRoot.IsSame(aNewShape) || (theResultShape &&
 601         (!theResultShape->isSubShape(*anIt, false) || theResultShape->isSame(*anIt)))) {
 602       ListOfShape::iterator aRemoveIt = anIt++;
 603       theShapes.erase(aRemoveIt);
 604     } else {
 605       GeomAPI_Shape::ShapeType aType = (*anIt)->shapeType();
 606       if (aType < aKeepShapeType) {
 607         // found a shape with lesser shape type => remove all previous shapes
 608         aKeepShapeType = aType;
 609         theShapes.erase(theShapes.begin(), anIt);
 610         ++anIt;
 611       } else if (aType > aKeepShapeType) {
 612         // shapes with greater shape type should be removed from the list
 613         ListOfShape::iterator aRemoveIt = anIt++;
 614         theShapes.erase(aRemoveIt);
 615       } else
 616         ++anIt;
 617     }
 618   }
 619 }
 620
 621 void Model_BodyBuilder::loadModifiedShapes(const GeomMakeShapePtr& theAlgo,
 622                                            const GeomShapePtr& theOldShape,
 623                                            const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 624                                            const std::string& theName)
 625 {
 626   GeomShapePtr aResultShape = shape();
 627   GeomShapePtr aShapeToExplore = theOldShape;
 628   if (theAlgo->isNewShapesCollected(theOldShape, theShapeTypeToExplore)) {
 629     // use optimized set of old shapes for this
 630     GeomShapePtr aCompound = theAlgo->oldShapesForNew(theOldShape,
 631                                                       aResultShape,
 632                                                       theShapeTypeToExplore);
 633     if (aCompound.get()) aShapeToExplore = aCompound;
 634   }
 635
 636   TopTools_MapOfShape anAlreadyProcessedShapes;
 637   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 638   for (GeomAPI_ShapeExplorer anOldShapeExp(aShapeToExplore, theShapeTypeToExplore);
 639        anOldShapeExp.more();
 640        anOldShapeExp.next())
 641   {
 642     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 643     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 644
 645     // There is no sense to write history if shape already processed
 646     // or old shape does not exist in the document.
 647     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 648     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 649       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 650     TDF_Label anOriginalLabel;
 651     bool anOldSubShapeNotInTree =
 652       !isShapeInTree(aData->shapeLab(), anAccess2, anOldSubShape_, anOriginalLabel);
 653     if (anOldSubShapeAlreadyProcessed || anOldSubShapeNotInTree) {
 654       continue;
 655     }
 656
 657     // Get new shapes.
 658     ListOfShape aNewShapes;
 659     theAlgo->modified(anOldSubShape, aNewShapes);
 660
 661     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 662          aNewShapesIt != aNewShapes.cend();
 663          ++aNewShapesIt)
 664     {
 665       GeomShapePtr aNewShape = *aNewShapesIt;
 666       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 667       bool isGenerated = anOldSubShape_.ShapeType() != aNewShape_.ShapeType();
 668
 669       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 670       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 671       if (aNewShapeIsSameAsOldShape || aNewShapeIsNotInResultShape)
 672         continue;
 673
 674       if (aResultShape->isSame(aNewShape))
 675         continue; // it is stored on the root level (2241 - history propagation issue)
 676
 677       int aTag = isGenerated ? getGenerationTag(aNewShape_) : getModificationTag(aNewShape_);
 678       TNaming_Builder*aBuilder = builder(aTag);
 679       if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_))
 680         continue; // new shape was already stored.
 681
 682       buildName(aTag, theName);
 683       isGenerated ? aBuilder->Generated(anOldSubShape_, aNewShape_)
 684                   : aBuilder->Modify(anOldSubShape_, aNewShape_);
 685       // store information about the external document reference to restore old shape on open
 686       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 687     }
 688   }
 689 }
 690
 691 void Model_BodyBuilder::loadGeneratedShapes(const GeomMakeShapePtr& theAlgo,
 692                                             const GeomShapePtr& theOldShape,
 693                                             const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 694                                             const std::string& theName,
 695                                             const bool theSaveOldIfNotInTree)
 696 {
 697   GeomShapePtr aResultShape = shape();
 698   TopTools_MapOfShape anAlreadyProcessedShapes;
 699   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 700   for (GeomAPI_ShapeExplorer anOldShapeExp(theOldShape, theShapeTypeToExplore);
 701        anOldShapeExp.more();
 702        anOldShapeExp.next())
 703   {
 704     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 705     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 706
 707     // There is no sense to write history if shape already processed
 708     // or old shape does not exist in the document.
 709     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 710     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 711       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 712     TDF_Label anOriginalLabel;
 713     bool anOldSubShapeNotInTree =
 714       !isShapeInTree(aData->shapeLab(), anAccess2, anOldSubShape_, anOriginalLabel);
 715     if (anOldSubShapeAlreadyProcessed || anOldSubShapeNotInTree) {
 716       if (theSaveOldIfNotInTree) {
 717         std::string aSelectionName = theName + "Selected";
 718         generated(anOldSubShape, aSelectionName, false);
 719       } else
 720         continue;
 721     }
 722
 723     // Get new shapes.
 724     ListOfShape aNewShapes;
 725     theAlgo->generated(anOldSubShape, aNewShapes);
 726
 727     keepTopLevelShapes(aNewShapes, anOldSubShape_);
 728
 729     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 730          aNewShapesIt != aNewShapes.cend();
 731          ++aNewShapesIt)
 732     {
 733       GeomShapePtr aNewShape = *aNewShapesIt;
 734       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 735
 736       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 737       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 738       if (aNewShapeIsSameAsOldShape || aNewShapeIsNotInResultShape) {
 739         continue;
 740       }
 741
 742       if (aResultShape->isSame(aNewShape))
 743         continue; // it is stored on the root level
 744
 745       TopAbs_ShapeEnum aNewShapeType = aNewShape_.ShapeType();
 746       if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 747         // TODO: This is a workaround. New shape should be only edge or face.
 748         TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE
 749                                                                             : TopAbs_FACE;
 750         int aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 751         for (TopExp_Explorer anExp(aNewShape_, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 752           builder(aTag)->Generated(anOldSubShape_, anExp.Current());
 753           // store information about the external document reference to restore old shape on open
 754           storeExternalReference(anOriginalLabel, builderLabel(data(), aTag));
 755         }
 756         buildName(aTag, theName);
 757       } else {
 758         int aTag = getGenerationTag(aNewShape_);
 759         if (aTag == INVALID_TAG) return;
 760         builder(aTag)->Generated(anOldSubShape_, aNewShape_);
 761         buildName(aTag, theName);
 762         // store information about the external document reference to restore old shape on open
 763         storeExternalReference(anOriginalLabel, builderLabel(data(), aTag));
 764       }
 765     }
 766   }
 767 }
 768
 769 // LCOV_EXCL_START
 770 //=======================================================================
 771 int getDangleShapes(const TopoDS_Shape&           theShapeIn,
 772   const TopAbs_ShapeEnum        theGeneratedFrom,
 773   TopTools_DataMapOfShapeShape& theDangles)
 774 {
 775   theDangles.Clear();
 776   TopTools_IndexedDataMapOfShapeListOfShape subShapeAndAncestors;
 777   TopAbs_ShapeEnum GeneratedTo;
 778   if (theGeneratedFrom == TopAbs_FACE) GeneratedTo = TopAbs_EDGE;
 779   else if (theGeneratedFrom == TopAbs_EDGE) GeneratedTo = TopAbs_VERTEX;
 780   else return Standard_False;
 781   TopExp::MapShapesAndAncestors(theShapeIn, GeneratedTo, theGeneratedFrom, subShapeAndAncestors);
 782   for (Standard_Integer i = 1; i <= subShapeAndAncestors.Extent(); i++) {
 783     const TopoDS_Shape& mayBeDangle = subShapeAndAncestors.FindKey(i);
 784     const TopTools_ListOfShape& ancestors = subShapeAndAncestors.FindFromIndex(i);
 785     if (ancestors.Extent() == 1) theDangles.Bind(ancestors.First(), mayBeDangle);
 786   }
 787   return theDangles.Extent();
 788 }
 789
 790 //=======================================================================
 791 void loadGeneratedDangleShapes(
 792   const TopoDS_Shape&      theShapeIn,
 793   const TopAbs_ShapeEnum   theGeneratedFrom,
 794   TNaming_Builder *        theBuilder)
 795 {
 796   TopTools_DataMapOfShapeShape dangles;
 797   if (!getDangleShapes(theShapeIn, theGeneratedFrom, dangles)) return;
 798   TopTools_DataMapIteratorOfDataMapOfShapeShape itr(dangles);
 799   for (; itr.More(); itr.Next())
 800     theBuilder->Generated(itr.Key(), itr.Value());
 801 }
 802 // LCOV_EXCL_STOP
 803
 804 //=======================================================================
 805 void Model_BodyBuilder::loadNextLevels(GeomShapePtr theShape,
 806                                        const std::string& theName)
 807 {
 808   if(theShape->isNull()) return;
 809   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 810   std::string aName;
 811   if (aShape.ShapeType() == TopAbs_SOLID) {
 812     TopExp_Explorer expl(aShape, TopAbs_FACE);
 813     for (; expl.More(); expl.Next()) {
 814       builder(myFreePrimitiveTag)->Generated(expl.Current());
 815       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 816       aName = theName + "_" + aStr.ToCString();
 817       buildName(myFreePrimitiveTag, aName);
 818       ++myFreePrimitiveTag;
 819     }
 820   }
 821   else if (aShape.ShapeType() == TopAbs_SHELL || aShape.ShapeType() == TopAbs_FACE) {
 822     // load faces and all the free edges
 823     TopTools_IndexedMapOfShape Faces;
 824     TopExp::MapShapes(aShape, TopAbs_FACE, Faces);
 825     if (Faces.Extent() > 1 || (aShape.ShapeType() == TopAbs_SHELL && Faces.Extent() == 1)) {
 826       TopExp_Explorer expl(aShape, TopAbs_FACE);
 827       for (; expl.More(); expl.Next()) {
 828         builder(myFreePrimitiveTag)->Generated(expl.Current());
 829         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 830         aName = theName + "_" + aStr.ToCString();
 831         buildName(myFreePrimitiveTag, aName);
 832         ++myFreePrimitiveTag;
 833       }
 834     }
 835     TopTools_IndexedDataMapOfShapeListOfShape anEdgeAndNeighbourFaces;
 836     TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, anEdgeAndNeighbourFaces);
 837     for (Standard_Integer i = 1; i <= anEdgeAndNeighbourFaces.Extent(); i++)
 838     {
 839       const TopTools_ListOfShape& aLL = anEdgeAndNeighbourFaces.FindFromIndex(i);
 840       if (aLL.Extent() < 2) {
 841         if (BRep_Tool::Degenerated(TopoDS::Edge(anEdgeAndNeighbourFaces.FindKey(i))))
 842           continue;
 843         builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 844         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 845         aName = theName + "_" + aStr.ToCString();
 846         buildName(myFreePrimitiveTag, aName);
 847         ++myFreePrimitiveTag;
 848       } else {
 849         TopTools_ListIteratorOfListOfShape anIter(aLL);
 850         const TopoDS_Face& aFace = TopoDS::Face(anIter.Value());
 851         anIter.Next();
 852         if(aFace.IsEqual(anIter.Value())) {
 853           builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 854           TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 855           aName = theName + "_" + aStr.ToCString();
 856           buildName(myFreePrimitiveTag, aName);
 857           ++myFreePrimitiveTag;
 858         }
 859       }
 860     }
 861   } else if (aShape.ShapeType() == TopAbs_WIRE) {
 862     TopTools_IndexedMapOfShape Edges;
 863     BRepTools::Map3DEdges(aShape, Edges);
 864     if (Edges.Extent() == 1) {
 865       builder(myFreePrimitiveTag++)->Generated(Edges.FindKey(1));
 866       TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 867       for (; expl.More(); expl.Next()) {
 868         builder(myFreePrimitiveTag)->Generated(expl.Current());
 869         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 870         aName = theName + "_" + aStr.ToCString();
 871         buildName(myFreePrimitiveTag, aName);
 872         ++myFreePrimitiveTag;
 873       }
 874     } else {
 875       TopExp_Explorer expl(aShape, TopAbs_EDGE);
 876       for (; expl.More(); expl.Next()) {
 877         builder(myFreePrimitiveTag)->Generated(expl.Current());
 878         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 879         aName = theName + "_" + aStr.ToCString();
 880         buildName(myFreePrimitiveTag, aName);
 881         ++myFreePrimitiveTag;
 882       }
 883       // and load generated vertices.
 884       TopTools_DataMapOfShapeShape generated;
 885       if (getDangleShapes(aShape, TopAbs_EDGE, generated))
 886       {
 887         TNaming_Builder* pBuilder = builder(myFreePrimitiveTag++);
 888         loadGeneratedDangleShapes(aShape, TopAbs_EDGE, pBuilder);
 889       }
 890     }
 891   } else if (aShape.ShapeType() == TopAbs_EDGE) {
 892     TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 893     for (; expl.More(); expl.Next()) {
 894       builder(myFreePrimitiveTag)->Generated(expl.Current());
 895       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 896       aName = theName + "_" + aStr.ToCString();
 897       buildName(myFreePrimitiveTag, aName);
 898       ++myFreePrimitiveTag;
 899     }
 900   }
 901 }
 902
 903 //=======================================================================
 904 int findAmbiguities(const TopoDS_Shape&           theShapeIn,
 905   TopTools_ListOfShape&   theList)
 906 {
 907   theList.Clear();
 908   // edges -> ancestor faces list
 909   TopTools_IndexedDataMapOfShapeListOfShape aSubShapeAndAncestors;
 910   TopExp::MapShapesAndAncestors(theShapeIn, TopAbs_EDGE, TopAbs_FACE, aSubShapeAndAncestors);
 911   // keeps the shapes which are already in the resulting list
 912   TopTools_MapOfShape alreadyThere;
 913   // map from faces identifier (combination of hash-codes) to list of edges produced such ID
 914   NCollection_DataMap<int, NCollection_List<TopoDS_Shape> > aFacesIDs;
 915
 916   TopTools_IndexedDataMapOfShapeListOfShape::Iterator anAncestorsIter(aSubShapeAndAncestors);
 917   for (; anAncestorsIter.More(); anAncestorsIter.Next()) {
 918     const TopTools_ListOfShape& ancestors = anAncestorsIter.Value();
 919     if (ancestors.Extent() < 2)
 920       continue;
 921     Standard_Integer anID = 0;
 922     for(TopTools_ListIteratorOfListOfShape aFaceIt(ancestors); aFaceIt.More(); aFaceIt.Next()) {
 923       anID ^= HashCode(aFaceIt.ChangeValue(), 1990657); // Pierpont prime
 924     }
 925     if (aFacesIDs.IsBound(anID)) { // there found same edge, check they really have same faces
 926       const NCollection_List<TopoDS_Shape>& aSameFaces1 =
 927         aSubShapeAndAncestors.FindFromKey(anAncestorsIter.Key());
 928       NCollection_List<TopoDS_Shape>::Iterator aSameEdge(aFacesIDs.ChangeFind(anID));
 929       for(; aSameEdge.More(); aSameEdge.Next()) {
 930         const NCollection_List<TopoDS_Shape>& aSameFaces2 =
 931           aSubShapeAndAncestors.FindFromKey(aSameEdge.Value());
 932         if (aSameFaces2.Extent() != aSameFaces1.Extent()) // the number of faces is different
 933           break;
 934
 935         NCollection_List<TopoDS_Shape>::Iterator aFaceIter1(aSameFaces1);
 936         for(; aFaceIter1.More(); aFaceIter1.Next()) {
 937           NCollection_List<TopoDS_Shape>::Iterator aFaceIter2(aSameFaces2);
 938           for(; aFaceIter2.More(); aFaceIter2.Next()) {
 939             if (aFaceIter1.Value().IsSame(aFaceIter2.Value()))
 940               break;
 941           }
 942           if (!aFaceIter2.More()) // aFaceIter1 contains a face, which is not in aFaceIter2
 943             break;
 944         }
 945         if (!aFaceIter1.More()) { // all the faces are same => put to the result
 946           if (alreadyThere.Add(aSameEdge.Value()))
 947             theList.Append(aSameEdge.Value());
 948           if (alreadyThere.Add(anAncestorsIter.Key()))
 949             theList.Append(anAncestorsIter.Key());
 950         }
 951       }
 952     } else { // ID is unique, just add this edge
 953       aFacesIDs.Bind(anID, NCollection_List<TopoDS_Shape>());
 954     }
 955     aFacesIDs.ChangeFind(anID).Append(anAncestorsIter.Key()); // add to the list anyway
 956   }
 957   return theList.Extent();
 958 }
 959
 960 //=======================================================================
 961 void Model_BodyBuilder::loadFirstLevel(GeomShapePtr theShape, const std::string& theName)
 962 {
 963   GeomShapePtr aShapePtr = shape();
 964   if (theShape->isNull() || !aShapePtr.get())
 965     return;
 966   TopoDS_Shape aShape = shape()->impl<TopoDS_Shape>();
 967   if (aShape.IsNull())
 968     return;
 969   std::string aName;
 970   if (aShape.ShapeType() == TopAbs_COMPOUND || aShape.ShapeType() == TopAbs_COMPSOLID) {
 971     TopoDS_Iterator itr(aShape);
 972     for (; itr.More(); itr.Next()) {
 973       builder(myFreePrimitiveTag)->Generated(itr.Value());
 974       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 975       aName = theName + "_" + aStr.ToCString();
 976       buildName(myFreePrimitiveTag, aName);
 977       ++myFreePrimitiveTag;
 978       if (itr.Value().ShapeType() == TopAbs_COMPOUND ||
 979         itr.Value().ShapeType() == TopAbs_COMPSOLID)
 980       {
 981         GeomShapePtr itrShape(new GeomAPI_Shape());
 982         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 983         loadFirstLevel(itrShape, theName);
 984       } else {
 985         GeomShapePtr itrShape(new GeomAPI_Shape());
 986         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 987         loadNextLevels(itrShape, theName);
 988       }
 989     }
 990   } else {
 991     GeomShapePtr itrShape(new GeomAPI_Shape());
 992     itrShape->setImpl(new TopoDS_Shape(aShape));
 993     loadNextLevels(itrShape, theName);
 994   }
 995   TopTools_ListOfShape   aList;
 996   if(findAmbiguities(aShape, aList)) {
 997     TopTools_ListIteratorOfListOfShape it(aList);
 998     for (; it.More(); it.Next(), ++myFreePrimitiveTag) {
 999       builder(myFreePrimitiveTag)->Generated(it.Value());
1000       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
1001       aName = theName + "_" + aStr.ToCString();
1002       buildName(myFreePrimitiveTag, aName);
1003     }
1004   }
1005 }
1006
1007 GeomShapePtr Model_BodyBuilder::shape()
1008 {
1009   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
1010   if (aData && aData->isValid()) {
1011     TDF_Label aShapeLab = aData->shapeLab();
1012     Handle(TDF_Reference) aRef;
1013     if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
1014       aShapeLab = aRef->Get();
1015     }
1016     Handle(TNaming_NamedShape) aName;
1017     if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
1018       TopoDS_Shape aShape = aName->Get();
1019       if (!aShape.IsNull()) {
1020         GeomShapePtr aRes(new GeomAPI_Shape);
1021         aRes->setImpl(new TopoDS_Shape(aShape));
1022         return aRes;
1023       }
1024     }
1025   }
1026   return GeomShapePtr();
1027 }