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 TNaming_Builder* Model_BodyBuilder::builder(const int theTag)
 302 {
 303   std::map<int, TNaming_Builder*>::iterator aFind = myBuilders.find(theTag);
 304   if (aFind == myBuilders.end()) {
 305     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 306     myBuilders[theTag] = new TNaming_Builder(
 307       theTag == 0 ? aData->shapeLab() : aData->shapeLab().FindChild(theTag));
 308     aFind = myBuilders.find(theTag);
 309   }
 310   return aFind->second;
 311 }
 312
 313 void Model_BodyBuilder::storeModified(const GeomShapePtr& theOldShape,
 314                                       const GeomShapePtr& theNewShape,
 315                                       const bool theIsCleanStored)
 316 {
 317   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 318   if (aData) {
 319     // clean builders
 320     if (theIsCleanStored) clean();
 321     TNaming_Builder* aBuilder = builder(0);
 322     if (!theOldShape || !theNewShape)
 323       return;  // bad shape
 324     TopoDS_Shape aShapeOld = theOldShape->impl<TopoDS_Shape>();
 325     if (aShapeOld.IsNull())
 326       return;  // null shape inside
 327     TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 328     if (aShapeNew.IsNull())
 329       return;  // null shape inside
 330
 331     // There is no sense to write history if old shape does not exist in the document.
 332     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 333       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 334     TDF_Label anOriginalLabel;
 335     if (!isShapeInTree(aData->shapeLab(), anAccess2, aShapeOld, anOriginalLabel)) {
 336       if (aBuilder->NamedShape()->Get().IsNull()) { // store as primitive if alone anyway
 337         aBuilder->Generated(aShapeNew);
 338       }
 339     } else {
 340       if (aBuilder->NamedShape()->Evolution() == TNaming_PRIMITIVE) { // erase primitive before
 341         myBuilders.erase(0);
 342         aBuilder = builder(0);
 343       }
 344
 345       aBuilder->Modify(aShapeOld, aShapeNew);
 346       // store information about the external document reference to restore old shape on open
 347       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 348     }
 349
 350     if(!aBuilder->NamedShape()->IsEmpty()) {
 351       Handle(TDataStd_Name) anAttr;
 352       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(), anAttr)) {
 353         std::wstring aName = Locale::Convert::toWString(anAttr->Get().ToExtString());
 354         if(!aName.empty()) {
 355           std::shared_ptr<Model_Document> aDoc =
 356             std::dynamic_pointer_cast<Model_Document>(document());
 357           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 358         }
 359       }
 360     }
 361   }
 362 }
 363
 364 void Model_BodyBuilder::storeModified(const std::list<GeomShapePtr>& theOldShapes,
 365   const GeomShapePtr& theNewShape, const std::shared_ptr<GeomAlgoAPI_MakeShape> theMakeShape)
 366 {
 367   bool aStored = false;
 368   std::list<GeomShapePtr>::const_iterator anOldIter = theOldShapes.cbegin();
 369   for(; anOldIter != theOldShapes.cend(); anOldIter++) {
 370     // compounds may cause crash if call "modified"
 371     bool aStore = (*anOldIter)->isCompound() || (*anOldIter)->isShell() || (*anOldIter)->isWire() ||
 372                 (*anOldIter)->isCompSolid();
 373     if (!aStore) {
 374       ListOfShape aNews; // check this old really modifies theNewShape
 375       theMakeShape->modified(*anOldIter, aNews);
 376       ListOfShape::iterator aNewIter = aNews.begin();
 377       for(; aNewIter != aNews.end(); aNewIter++) {
 378         if (theNewShape->isSame(*aNewIter))
 379           break;
 380       }
 381       aStore = aNewIter != aNews.end();
 382     }
 383     if (aStore) {
 384       storeModified(*anOldIter, theNewShape, !aStored);
 385       TNaming_Builder* aBuilder = builder(0);
 386       aStored = !aBuilder->NamedShape()->IsEmpty();
 387     }
 388   }
 389   if (!aStored) {
 390     // check the new shape is already in the tree, so, no need to store primitive, just reference
 391     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 392     if (aData.get()) {
 393       TDF_Label aShapeLab = aData->shapeLab();
 394       TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 395       Handle(TNaming_NamedShape) aNS;
 396       if (TNaming_Tool::HasLabel(aShapeLab, aShapeNew))
 397         aNS = TNaming_Tool::NamedShape(aShapeNew, aShapeLab);
 398       // the last condition is for the issue 2751 : existing shape may be found in compound-NS
 399       if (!aNS.IsNull() && !aNS->IsEmpty() && aNS->Get().IsSame(aShapeNew)) {
 400         // This shape is already in document, store reference instead of shape;
 401         const TDF_Label aFoundLabel = aNS->Label();
 402         TDF_Reference::Set(aShapeLab, aFoundLabel);
 403         myBuilders.erase(0);
 404         aShapeLab.ForgetAttribute(TNaming_NamedShape::GetID());
 405         return;
 406       }
 407     }
 408     store(theNewShape); // store as PRIMITIVE, but clean in any way
 409     return;
 410   }
 411 }
 412
 413 void Model_BodyBuilder::clean()
 414 {
 415   TDF_Label aLab = std::dynamic_pointer_cast<Model_Data>(data())->shapeLab();
 416   if (aLab.IsNull())
 417     return;
 418   std::map<int, TNaming_Builder*>::iterator aBuilder = myBuilders.begin();
 419   for(; aBuilder != myBuilders.end(); aBuilder++) {
 420     Handle(TNaming_NamedShape) aNS = aBuilder->second->NamedShape();
 421     delete aBuilder->second;
 422     if (!aNS.IsNull() && !aNS->Label().IsNull())
 423       aNS->Label().ForgetAttribute(TNaming_NamedShape::GetID());
 424   }
 425   myBuilders.clear();
 426   myPrimitivesNamesIndexMap.clear();
 427   // remove the old reference (if any)
 428   aLab.ForgetAttribute(TDF_Reference::GetID());
 429   myFreePrimitiveTag = PRIMITIVES_START_TAG;
 430   TDF_ChildIDIterator anEntriesIter(aLab, kEXTERNAL_SHAPE_REF, true);
 431   for(; anEntriesIter.More(); anEntriesIter.Next()) {
 432     anEntriesIter.Value()->Label().ForgetAttribute(kEXTERNAL_SHAPE_REF);
 433   }
 434 }
 435
 436 void Model_BodyBuilder::cleanCash()
 437 {
 438   myPrimitivesNamesIndexMap.clear();
 439 }
 440
 441 Model_BodyBuilder::~Model_BodyBuilder()
 442 {
 443   clean();
 444 }
 445
 446 void Model_BodyBuilder::buildName(const int theTag, const std::string& theName)
 447 {
 448   std::string aName = theName;
 449   std::string aPrefix = "";
 450   switch (theTag) {
 451     case GENERATED_VERTICES_TAG: aPrefix = aName.empty() ? "Generated_Vertex" : "GV:"; break;
 452     case GENERATED_EDGES_TAG:    aPrefix = aName.empty() ? "Generated_Edge"   : "GE:"; break;
 453     case GENERATED_FACES_TAG:    aPrefix = aName.empty() ? "Generated_Face"   : "GF:"; break;
 454     case MODIFIED_VERTICES_TAG:  aPrefix = aName.empty() ? "Modified_Vertex"  : "MV:"; break;
 455     case MODIFIED_EDGES_TAG:     aPrefix = aName.empty() ? "Modified_Edge"    : "ME:"; break;
 456     case MODIFIED_FACES_TAG:     aPrefix = aName.empty() ? "Modified_Face"    : "MF:"; break;
 457   }
 458   aName.insert(0, aPrefix);
 459
 460   TDataStd_Name::Set(builder(theTag)->NamedShape()->Label(), aName.c_str());
 461 }
 462 bool Model_BodyBuilder::generated(const GeomShapePtr& theNewShape,
 463                                   const std::string& theName,
 464                                   const bool theCheckIsInResult)
 465 {
 466   GeomShapePtr aResultShape = shape();
 467   if (theCheckIsInResult) {
 468     bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(theNewShape, false);
 469     if (aNewShapeIsNotInResultShape) {
 470       return false;
 471     }
 472   }
 473
 474   TopoDS_Shape aShape = theNewShape->impl<TopoDS_Shape>();
 475   builder(myFreePrimitiveTag)->Generated(aShape);
 476   if (!theName.empty()) {
 477     std::string aName = theName;
 478     if (myPrimitivesNamesIndexMap.find(theName) != myPrimitivesNamesIndexMap.end()) {
 479       IndexTags& anIndexTags = myPrimitivesNamesIndexMap.find(theName)->second;
 480       aName += "_" + std::to_string(++(anIndexTags.index));
 481       anIndexTags.tags.push_back(myFreePrimitiveTag);
 482       if (anIndexTags.index == 2) {
 483         buildName(anIndexTags.tags.front(), theName + "_1");
 484       }
 485     }
 486     else {
 487       IndexTags anIndexTags;
 488       anIndexTags.index = 1;
 489       anIndexTags.tags.push_back(myFreePrimitiveTag);
 490       myPrimitivesNamesIndexMap[theName] = anIndexTags;
 491     }
 492
 493     buildName(myFreePrimitiveTag, aName);
 494   }
 495   ++myFreePrimitiveTag;
 496   return true;
 497 }
 498
 499 void Model_BodyBuilder::generated(const GeomShapePtr& theOldShape,
 500                                   const GeomShapePtr& theNewShape,
 501                                   const std::string& theName)
 502 {
 503   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 504   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 505   TopAbs_ShapeEnum aNewShapeType = aNewShape.ShapeType();
 506   int aTag;
 507   if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 508     // TODO: This is a workaround. New shape should be only vertex, edge or face.
 509     TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE : TopAbs_FACE;
 510     aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 511     for (TopExp_Explorer anExp(aNewShape, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 512       builder(aTag)->Generated(anOldShape, anExp.Current());
 513     }
 514     buildName(aTag, theName);
 515   } else {
 516     aTag = getGenerationTag(aNewShape);
 517     if (aTag == INVALID_TAG) return;
 518     builder(aTag)->Generated(anOldShape, aNewShape);
 519     buildName(aTag, theName);
 520   }
 521 }
 522
 523 void Model_BodyBuilder::modified(const GeomShapePtr& theOldShape,
 524                                  const GeomShapePtr& theNewShape,
 525                                  const std::string& theName)
 526 {
 527   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 528   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 529   int aTag = getModificationTag(aNewShape);
 530   if (aTag == INVALID_TAG) return;
 531   builder(aTag)->Modify(anOldShape, aNewShape);
 532   buildName(aTag, theName);
 533 }
 534
 535 void Model_BodyBuilder::loadDeletedShapes(const GeomMakeShapePtr& theAlgo,
 536                                           const GeomShapePtr& theOldShape,
 537                                           const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 538                                           const GeomShapePtr& theShapesToExclude)
 539 {
 540   TopTools_MapOfShape anAlreadyProcessedShapes;
 541   GeomShapePtr aResultShape = shape();
 542   for (GeomAPI_ShapeExplorer anExp(theOldShape, theShapeTypeToExplore);
 543        anExp.more();
 544        anExp.next())
 545   {
 546     GeomShapePtr anOldSubShape = anExp.current();
 547     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 548     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)
 549         || !theAlgo->isDeleted(anOldSubShape)
 550         || aResultShape->isSubShape(anOldSubShape, false)
 551         || (theShapesToExclude.get() && theShapesToExclude->isSubShape(anOldSubShape, false)))
 552     {
 553       continue;
 554     }
 555
 556     ListOfShape aNewShapes;
 557     if (BRepTools_History::IsSupportedType(anOldSubShape_)) { // to avoid crash in #2572
 558       theAlgo->modified(anOldSubShape, aNewShapes);
 559     }
 560
 561     if (aNewShapes.size() == 0
 562         || (aNewShapes.size() == 1 && aNewShapes.front()->isSame(anOldSubShape))) {
 563       builder(DELETED_TAG)->Delete(anOldSubShape_);
 564     }
 565   }
 566 }
 567
 568 // Keep only the shapes with minimal shape type
 569 static void keepTopLevelShapes(ListOfShape& theShapes,
 570                                const TopoDS_Shape& theRoot,
 571                                const GeomShapePtr& theResultShape = GeomShapePtr())
 572 {
 573   GeomAPI_Shape::ShapeType aKeepShapeType = GeomAPI_Shape::SHAPE;
 574   ListOfShape::iterator anIt = theShapes.begin();
 575   while (anIt != theShapes.end()) {
 576     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 577     bool aSkip = aNewShape.IsNull() ||
 578       (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 579     if (aSkip || theRoot.IsSame(aNewShape) || (theResultShape &&
 580         (!theResultShape->isSubShape(*anIt, false) || theResultShape->isSame(*anIt)))) {
 581       ListOfShape::iterator aRemoveIt = anIt++;
 582       theShapes.erase(aRemoveIt);
 583     } else {
 584       GeomAPI_Shape::ShapeType aType = (*anIt)->shapeType();
 585       if (aType < aKeepShapeType) {
 586         // found a shape with lesser shape type => remove all previous shapes
 587         aKeepShapeType = aType;
 588         theShapes.erase(theShapes.begin(), anIt);
 589         ++anIt;
 590       } else if (aType > aKeepShapeType) {
 591         // shapes with greater shape type should be removed from the list
 592         ListOfShape::iterator aRemoveIt = anIt++;
 593         theShapes.erase(aRemoveIt);
 594       } else
 595         ++anIt;
 596     }
 597   }
 598 }
 599
 600 void Model_BodyBuilder::loadModifiedShapes(const GeomMakeShapePtr& theAlgo,
 601                                            const GeomShapePtr& theOldShape,
 602                                            const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 603                                            const std::string& theName)
 604 {
 605   GeomShapePtr aResultShape = shape();
 606   GeomShapePtr aShapeToExplore = theOldShape;
 607   if (theAlgo->isNewShapesCollected(theOldShape, theShapeTypeToExplore)) {
 608     // use optimized set of old shapes for this
 609     GeomShapePtr aCompound = theAlgo->oldShapesForNew(theOldShape,
 610                                                       aResultShape,
 611                                                       theShapeTypeToExplore);
 612     if (aCompound.get()) aShapeToExplore = aCompound;
 613   }
 614
 615   TopTools_MapOfShape anAlreadyProcessedShapes;
 616   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 617   for (GeomAPI_ShapeExplorer anOldShapeExp(aShapeToExplore, theShapeTypeToExplore);
 618        anOldShapeExp.more();
 619        anOldShapeExp.next())
 620   {
 621     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 622     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 623
 624     // There is no sense to write history if shape already processed
 625     // or old shape does not exist in the document.
 626     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 627     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 628       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 629     TDF_Label anOriginalLabel;
 630     bool anOldSubShapeNotInTree =
 631       !isShapeInTree(aData->shapeLab(), anAccess2, anOldSubShape_, anOriginalLabel);
 632     if (anOldSubShapeAlreadyProcessed || anOldSubShapeNotInTree) {
 633       continue;
 634     }
 635
 636     // Get new shapes.
 637     ListOfShape aNewShapes;
 638     theAlgo->modified(anOldSubShape, aNewShapes);
 639
 640     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 641          aNewShapesIt != aNewShapes.cend();
 642          ++aNewShapesIt)
 643     {
 644       GeomShapePtr aNewShape = *aNewShapesIt;
 645       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 646       bool isGenerated = anOldSubShape_.ShapeType() != aNewShape_.ShapeType();
 647
 648       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 649       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 650       if (aNewShapeIsSameAsOldShape || aNewShapeIsNotInResultShape)
 651         continue;
 652
 653       if (aResultShape->isSame(aNewShape))
 654         continue; // it is stored on the root level (2241 - history propagation issue)
 655
 656       int aTag = isGenerated ? getGenerationTag(aNewShape_) : getModificationTag(aNewShape_);
 657       TNaming_Builder*aBuilder = builder(aTag);
 658       if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_))
 659         continue; // new shape was already stored.
 660
 661       buildName(aTag, theName);
 662       isGenerated ? aBuilder->Generated(anOldSubShape_, aNewShape_)
 663                   : aBuilder->Modify(anOldSubShape_, aNewShape_);
 664       // store information about the external document reference to restore old shape on open
 665       storeExternalReference(anOriginalLabel, aBuilder->NamedShape()->Label());
 666     }
 667   }
 668 }
 669
 670 void Model_BodyBuilder::loadGeneratedShapes(const GeomMakeShapePtr& theAlgo,
 671                                             const GeomShapePtr& theOldShape,
 672                                             const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 673                                             const std::string& theName,
 674                                             const bool theSaveOldIfNotInTree)
 675 {
 676   GeomShapePtr aResultShape = shape();
 677   TopTools_MapOfShape anAlreadyProcessedShapes;
 678   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 679   for (GeomAPI_ShapeExplorer anOldShapeExp(theOldShape, theShapeTypeToExplore);
 680        anOldShapeExp.more();
 681        anOldShapeExp.next())
 682   {
 683     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 684     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 685
 686     // There is no sense to write history if shape already processed
 687     // or old shape does not exist in the document.
 688     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 689     TDF_Label anAccess2 = std::dynamic_pointer_cast<Model_Document>(
 690       ModelAPI_Session::get()->moduleDocument())->generalLabel();
 691     TDF_Label anOriginalLabel;
 692     bool anOldSubShapeNotInTree =
 693       !isShapeInTree(aData->shapeLab(), anAccess2, anOldSubShape_, anOriginalLabel);
 694     if (anOldSubShapeAlreadyProcessed || anOldSubShapeNotInTree) {
 695       if (theSaveOldIfNotInTree) {
 696         std::string aSelectionName = theName + "Selected";
 697         generated(anOldSubShape, aSelectionName, false);
 698       } else
 699         continue;
 700     }
 701
 702     // Get new shapes.
 703     ListOfShape aNewShapes;
 704     theAlgo->generated(anOldSubShape, aNewShapes);
 705
 706     keepTopLevelShapes(aNewShapes, anOldSubShape_);
 707
 708     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 709          aNewShapesIt != aNewShapes.cend();
 710          ++aNewShapesIt)
 711     {
 712       GeomShapePtr aNewShape = *aNewShapesIt;
 713       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 714
 715       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 716       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 717       if (aNewShapeIsSameAsOldShape || aNewShapeIsNotInResultShape) {
 718         continue;
 719       }
 720
 721       if (aResultShape->isSame(aNewShape))
 722         continue; // it is stored on the root level
 723
 724       TopAbs_ShapeEnum aNewShapeType = aNewShape_.ShapeType();
 725       if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 726         // TODO: This is a workaround. New shape should be only edge or face.
 727         TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE
 728                                                                             : TopAbs_FACE;
 729         int aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 730         for (TopExp_Explorer anExp(aNewShape_, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 731           builder(aTag)->Generated(anOldSubShape_, anExp.Current());
 732           // store information about the external document reference to restore old shape on open
 733           storeExternalReference(anOriginalLabel, builder(aTag)->NamedShape()->Label());
 734         }
 735         buildName(aTag, theName);
 736       } else {
 737         int aTag = getGenerationTag(aNewShape_);
 738         if (aTag == INVALID_TAG) return;
 739         builder(aTag)->Generated(anOldSubShape_, aNewShape_);
 740         buildName(aTag, theName);
 741         // store information about the external document reference to restore old shape on open
 742         storeExternalReference(anOriginalLabel, builder(aTag)->NamedShape()->Label());
 743       }
 744     }
 745   }
 746 }
 747
 748 // LCOV_EXCL_START
 749 //=======================================================================
 750 int getDangleShapes(const TopoDS_Shape&           theShapeIn,
 751   const TopAbs_ShapeEnum        theGeneratedFrom,
 752   TopTools_DataMapOfShapeShape& theDangles)
 753 {
 754   theDangles.Clear();
 755   TopTools_IndexedDataMapOfShapeListOfShape subShapeAndAncestors;
 756   TopAbs_ShapeEnum GeneratedTo;
 757   if (theGeneratedFrom == TopAbs_FACE) GeneratedTo = TopAbs_EDGE;
 758   else if (theGeneratedFrom == TopAbs_EDGE) GeneratedTo = TopAbs_VERTEX;
 759   else return Standard_False;
 760   TopExp::MapShapesAndAncestors(theShapeIn, GeneratedTo, theGeneratedFrom, subShapeAndAncestors);
 761   for (Standard_Integer i = 1; i <= subShapeAndAncestors.Extent(); i++) {
 762     const TopoDS_Shape& mayBeDangle = subShapeAndAncestors.FindKey(i);
 763     const TopTools_ListOfShape& ancestors = subShapeAndAncestors.FindFromIndex(i);
 764     if (ancestors.Extent() == 1) theDangles.Bind(ancestors.First(), mayBeDangle);
 765   }
 766   return theDangles.Extent();
 767 }
 768
 769 //=======================================================================
 770 void loadGeneratedDangleShapes(
 771   const TopoDS_Shape&      theShapeIn,
 772   const TopAbs_ShapeEnum   theGeneratedFrom,
 773   TNaming_Builder *        theBuilder)
 774 {
 775   TopTools_DataMapOfShapeShape dangles;
 776   if (!getDangleShapes(theShapeIn, theGeneratedFrom, dangles)) return;
 777   TopTools_DataMapIteratorOfDataMapOfShapeShape itr(dangles);
 778   for (; itr.More(); itr.Next())
 779     theBuilder->Generated(itr.Key(), itr.Value());
 780 }
 781 // LCOV_EXCL_STOP
 782
 783 //=======================================================================
 784 void Model_BodyBuilder::loadNextLevels(GeomShapePtr theShape,
 785                                        const std::string& theName)
 786 {
 787   if(theShape->isNull()) return;
 788   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 789   std::string aName;
 790   if (aShape.ShapeType() == TopAbs_SOLID) {
 791     TopExp_Explorer expl(aShape, TopAbs_FACE);
 792     for (; expl.More(); expl.Next()) {
 793       builder(myFreePrimitiveTag)->Generated(expl.Current());
 794       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 795       aName = theName + "_" + aStr.ToCString();
 796       buildName(myFreePrimitiveTag, aName);
 797       ++myFreePrimitiveTag;
 798     }
 799   }
 800   else if (aShape.ShapeType() == TopAbs_SHELL || aShape.ShapeType() == TopAbs_FACE) {
 801     // load faces and all the free edges
 802     TopTools_IndexedMapOfShape Faces;
 803     TopExp::MapShapes(aShape, TopAbs_FACE, Faces);
 804     if (Faces.Extent() > 1 || (aShape.ShapeType() == TopAbs_SHELL && Faces.Extent() == 1)) {
 805       TopExp_Explorer expl(aShape, TopAbs_FACE);
 806       for (; expl.More(); expl.Next()) {
 807         builder(myFreePrimitiveTag)->Generated(expl.Current());
 808         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 809         aName = theName + "_" + aStr.ToCString();
 810         buildName(myFreePrimitiveTag, aName);
 811         ++myFreePrimitiveTag;
 812       }
 813     }
 814     TopTools_IndexedDataMapOfShapeListOfShape anEdgeAndNeighbourFaces;
 815     TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, anEdgeAndNeighbourFaces);
 816     for (Standard_Integer i = 1; i <= anEdgeAndNeighbourFaces.Extent(); i++)
 817     {
 818       const TopTools_ListOfShape& aLL = anEdgeAndNeighbourFaces.FindFromIndex(i);
 819       if (aLL.Extent() < 2) {
 820         if (BRep_Tool::Degenerated(TopoDS::Edge(anEdgeAndNeighbourFaces.FindKey(i))))
 821           continue;
 822         builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 823         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 824         aName = theName + "_" + aStr.ToCString();
 825         buildName(myFreePrimitiveTag, aName);
 826         ++myFreePrimitiveTag;
 827       } else {
 828         TopTools_ListIteratorOfListOfShape anIter(aLL);
 829         const TopoDS_Face& aFace = TopoDS::Face(anIter.Value());
 830         anIter.Next();
 831         if(aFace.IsEqual(anIter.Value())) {
 832           builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 833           TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 834           aName = theName + "_" + aStr.ToCString();
 835           buildName(myFreePrimitiveTag, aName);
 836           ++myFreePrimitiveTag;
 837         }
 838       }
 839     }
 840   } else if (aShape.ShapeType() == TopAbs_WIRE) {
 841     TopTools_IndexedMapOfShape Edges;
 842     BRepTools::Map3DEdges(aShape, Edges);
 843     if (Edges.Extent() == 1) {
 844       builder(myFreePrimitiveTag++)->Generated(Edges.FindKey(1));
 845       TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 846       for (; expl.More(); expl.Next()) {
 847         builder(myFreePrimitiveTag)->Generated(expl.Current());
 848         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 849         aName = theName + "_" + aStr.ToCString();
 850         buildName(myFreePrimitiveTag, aName);
 851         ++myFreePrimitiveTag;
 852       }
 853     } else {
 854       TopExp_Explorer expl(aShape, TopAbs_EDGE);
 855       for (; expl.More(); expl.Next()) {
 856         builder(myFreePrimitiveTag)->Generated(expl.Current());
 857         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 858         aName = theName + "_" + aStr.ToCString();
 859         buildName(myFreePrimitiveTag, aName);
 860         ++myFreePrimitiveTag;
 861       }
 862       // and load generated vertices.
 863       TopTools_DataMapOfShapeShape generated;
 864       if (getDangleShapes(aShape, TopAbs_EDGE, generated))
 865       {
 866         TNaming_Builder* pBuilder = builder(myFreePrimitiveTag++);
 867         loadGeneratedDangleShapes(aShape, TopAbs_EDGE, pBuilder);
 868       }
 869     }
 870   } else if (aShape.ShapeType() == TopAbs_EDGE) {
 871     TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 872     for (; expl.More(); expl.Next()) {
 873       builder(myFreePrimitiveTag)->Generated(expl.Current());
 874       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 875       aName = theName + "_" + aStr.ToCString();
 876       buildName(myFreePrimitiveTag, aName);
 877       ++myFreePrimitiveTag;
 878     }
 879   }
 880 }
 881
 882 //=======================================================================
 883 int findAmbiguities(const TopoDS_Shape&           theShapeIn,
 884   TopTools_ListOfShape&   theList)
 885 {
 886   theList.Clear();
 887   // edges -> ancestor faces list
 888   TopTools_IndexedDataMapOfShapeListOfShape aSubShapeAndAncestors;
 889   TopExp::MapShapesAndAncestors(theShapeIn, TopAbs_EDGE, TopAbs_FACE, aSubShapeAndAncestors);
 890   // keeps the shapes which are already in the resulting list
 891   TopTools_MapOfShape alreadyThere;
 892   // map from faces identifier (combination of hash-codes) to list of edges produced such ID
 893   NCollection_DataMap<int, NCollection_List<TopoDS_Shape> > aFacesIDs;
 894
 895   TopTools_IndexedDataMapOfShapeListOfShape::Iterator anAncestorsIter(aSubShapeAndAncestors);
 896   for (; anAncestorsIter.More(); anAncestorsIter.Next()) {
 897     const TopTools_ListOfShape& ancestors = anAncestorsIter.Value();
 898     if (ancestors.Extent() < 2)
 899       continue;
 900     Standard_Integer anID = 0;
 901     for(TopTools_ListIteratorOfListOfShape aFaceIt(ancestors); aFaceIt.More(); aFaceIt.Next()) {
 902       anID ^= HashCode(aFaceIt.ChangeValue(), 1990657); // Pierpont prime
 903     }
 904     if (aFacesIDs.IsBound(anID)) { // there found same edge, check they really have same faces
 905       const NCollection_List<TopoDS_Shape>& aSameFaces1 =
 906         aSubShapeAndAncestors.FindFromKey(anAncestorsIter.Key());
 907       NCollection_List<TopoDS_Shape>::Iterator aSameEdge(aFacesIDs.ChangeFind(anID));
 908       for(; aSameEdge.More(); aSameEdge.Next()) {
 909         const NCollection_List<TopoDS_Shape>& aSameFaces2 =
 910           aSubShapeAndAncestors.FindFromKey(aSameEdge.Value());
 911         if (aSameFaces2.Extent() != aSameFaces1.Extent()) // the number of faces is different
 912           break;
 913
 914         NCollection_List<TopoDS_Shape>::Iterator aFaceIter1(aSameFaces1);
 915         for(; aFaceIter1.More(); aFaceIter1.Next()) {
 916           NCollection_List<TopoDS_Shape>::Iterator aFaceIter2(aSameFaces2);
 917           for(; aFaceIter2.More(); aFaceIter2.Next()) {
 918             if (aFaceIter1.Value().IsSame(aFaceIter2.Value()))
 919               break;
 920           }
 921           if (!aFaceIter2.More()) // aFaceIter1 contains a face, which is not in aFaceIter2
 922             break;
 923         }
 924         if (!aFaceIter1.More()) { // all the faces are same => put to the result
 925           if (alreadyThere.Add(aSameEdge.Value()))
 926             theList.Append(aSameEdge.Value());
 927           if (alreadyThere.Add(anAncestorsIter.Key()))
 928             theList.Append(anAncestorsIter.Key());
 929         }
 930       }
 931     } else { // ID is unique, just add this edge
 932       aFacesIDs.Bind(anID, NCollection_List<TopoDS_Shape>());
 933     }
 934     aFacesIDs.ChangeFind(anID).Append(anAncestorsIter.Key()); // add to the list anyway
 935   }
 936   return theList.Extent();
 937 }
 938
 939 //=======================================================================
 940 void Model_BodyBuilder::loadFirstLevel(GeomShapePtr theShape, const std::string& theName)
 941 {
 942   GeomShapePtr aShapePtr = shape();
 943   if (theShape->isNull() || !aShapePtr.get())
 944     return;
 945   TopoDS_Shape aShape = shape()->impl<TopoDS_Shape>();
 946   if (aShape.IsNull())
 947     return;
 948   std::string aName;
 949   if (aShape.ShapeType() == TopAbs_COMPOUND || aShape.ShapeType() == TopAbs_COMPSOLID) {
 950     TopoDS_Iterator itr(aShape);
 951     for (; itr.More(); itr.Next()) {
 952       builder(myFreePrimitiveTag)->Generated(itr.Value());
 953       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 954       aName = theName + "_" + aStr.ToCString();
 955       buildName(myFreePrimitiveTag, aName);
 956       ++myFreePrimitiveTag;
 957       if (itr.Value().ShapeType() == TopAbs_COMPOUND ||
 958         itr.Value().ShapeType() == TopAbs_COMPSOLID)
 959       {
 960         GeomShapePtr itrShape(new GeomAPI_Shape());
 961         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 962         loadFirstLevel(itrShape, theName);
 963       } else {
 964         GeomShapePtr itrShape(new GeomAPI_Shape());
 965         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 966         loadNextLevels(itrShape, theName);
 967       }
 968     }
 969   } else {
 970     GeomShapePtr itrShape(new GeomAPI_Shape());
 971     itrShape->setImpl(new TopoDS_Shape(aShape));
 972     loadNextLevels(itrShape, theName);
 973   }
 974   TopTools_ListOfShape   aList;
 975   if(findAmbiguities(aShape, aList)) {
 976     TopTools_ListIteratorOfListOfShape it(aList);
 977     for (; it.More(); it.Next(), ++myFreePrimitiveTag) {
 978       builder(myFreePrimitiveTag)->Generated(it.Value());
 979       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 980       aName = theName + "_" + aStr.ToCString();
 981       buildName(myFreePrimitiveTag, aName);
 982     }
 983   }
 984 }
 985
 986 GeomShapePtr Model_BodyBuilder::shape()
 987 {
 988   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 989   if (aData && aData->isValid()) {
 990     TDF_Label aShapeLab = aData->shapeLab();
 991     Handle(TDF_Reference) aRef;
 992     if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
 993       aShapeLab = aRef->Get();
 994     }
 995     Handle(TNaming_NamedShape) aName;
 996     if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
 997       TopoDS_Shape aShape = aName->Get();
 998       if (!aShape.IsNull()) {
 999         GeomShapePtr aRes(new GeomAPI_Shape);
1000         aRes->setImpl(new TopoDS_Shape(aShape));
1001         return aRes;
1002       }
1003     }
1004   }
1005   return GeomShapePtr();
1006 }