src/Model/Model_BodyBuilder.cpp

   1 // Copyright (C) 2014-2017  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
  18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
  19 //
  20
  21 #include <Model_BodyBuilder.h>
  22
  23 #include <Model_Data.h>
  24 #include <Model_Document.h>
  25 #include <TNaming_Builder.hxx>
  26 #include <TNaming_NamedShape.hxx>
  27 #include <TNaming_Iterator.hxx>
  28 #include <TNaming_Tool.hxx>
  29 #include <TDataStd_Name.hxx>
  30 #include <TDataStd_Integer.hxx>
  31 #include <TopoDS.hxx>
  32 #include <TopoDS_Face.hxx>
  33 #include <TDF_ChildIterator.hxx>
  34 #include <TDF_ChildIDIterator.hxx>
  35 #include <TDF_Reference.hxx>
  36 #include <TopTools_MapOfShape.hxx>
  37 #include <TopExp_Explorer.hxx>
  38 #include <TopTools_ListOfShape.hxx>
  39 #include <TopTools_ListIteratorOfListOfShape.hxx>
  40 #include <TopTools_DataMapOfShapeListOfShape.hxx>
  41 #include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
  42 #include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
  43 #include <TopTools_MapIteratorOfMapOfShape.hxx>
  44 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
  45 #include <TopTools_IndexedMapOfShape.hxx>
  46 #include <TopTools_DataMapOfShapeShape.hxx>
  47 #include <TopExp.hxx>
  48 #include <BRepTools.hxx>
  49 #include <BRep_Tool.hxx>
  50 #include <BRepTools_History.hxx>
  51 #include <GeomAPI_Shape.h>
  52 #include <GeomAPI_ShapeExplorer.h>
  53 #include <GeomAlgoAPI_MakeShape.h>
  54 #include <GeomAlgoAPI_SortListOfShapes.h>
  55 #include <Config_PropManager.h>
  56 // DEB
  57 //#include <TCollection_AsciiString.hxx>
  58 //#include <TDF_Tool.hxx>
  59 //#define DEB_IMPORT 1
  60
  61 static const int INVALID_TAG            = -1;
  62 static const int GENERATED_VERTICES_TAG = 1;
  63 static const int GENERATED_EDGES_TAG    = 2;
  64 static const int GENERATED_FACES_TAG    = 3;
  65 static const int MODIFIED_VERTICES_TAG  = 4;
  66 static const int MODIFIED_EDGES_TAG     = 5;
  67 static const int MODIFIED_FACES_TAG     = 6;
  68 static const int DELETED_TAG            = 7;
  69 static const int PRIMITIVES_START_TAG   = 11;
  70
  71 static int getGenerationTag(const TopoDS_Shape& theShape) {
  72   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
  73   switch (aShapeType) {
  74     case TopAbs_VERTEX: return GENERATED_VERTICES_TAG;
  75     case TopAbs_EDGE:   return GENERATED_EDGES_TAG;
  76     case TopAbs_FACE:   return GENERATED_FACES_TAG;
  77   }
  78
  79   return INVALID_TAG;
  80 }
  81
  82 static int getModificationTag(const TopoDS_Shape& theShape) {
  83   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
  84   switch (aShapeType) {
  85     case TopAbs_VERTEX: return MODIFIED_VERTICES_TAG;
  86     case TopAbs_EDGE:   return MODIFIED_EDGES_TAG;
  87     case TopAbs_FACE:   return MODIFIED_FACES_TAG;
  88   }
  89
  90   return INVALID_TAG;
  91 }
  92
  93 static TopAbs_ShapeEnum convertShapeType(const GeomAPI_Shape::ShapeType theType) {
  94   switch (theType) {
  95     case GeomAPI_Shape::VERTEX:    return TopAbs_VERTEX;
  96     case GeomAPI_Shape::EDGE:      return TopAbs_EDGE;
  97     case GeomAPI_Shape::WIRE:      return TopAbs_WIRE;
  98     case GeomAPI_Shape::FACE:      return TopAbs_FACE;
  99     case GeomAPI_Shape::SHELL:     return TopAbs_SHELL;
 100     case GeomAPI_Shape::SOLID:     return TopAbs_SOLID;
 101     case GeomAPI_Shape::COMPSOLID: return TopAbs_COMPSOLID;
 102     case GeomAPI_Shape::COMPOUND:  return TopAbs_COMPOUND;
 103     case GeomAPI_Shape::SHAPE:     return TopAbs_SHAPE;
 104   }
 105   return TopAbs_SHAPE;
 106 }
 107
 108 static bool isAlreadyStored(const TNaming_Builder* theBuilder,
 109                             const TopoDS_Shape& theOldShape,
 110                             const TopoDS_Shape& theNewShape)
 111 {
 112   for (TNaming_Iterator aNamingIt(theBuilder->NamedShape());
 113     aNamingIt.More();
 114     aNamingIt.Next())
 115   {
 116     if (aNamingIt.NewShape().IsSame(theNewShape)
 117       && aNamingIt.OldShape().IsSame(theOldShape))
 118     {
 119       return true;
 120     }
 121   }
 122
 123   return false;
 124 }
 125
 126 Model_BodyBuilder::Model_BodyBuilder(ModelAPI_Object* theOwner)
 127 : ModelAPI_BodyBuilder(theOwner),
 128   myFreePrimitiveTag(PRIMITIVES_START_TAG)
 129 {
 130 }
 131
 132 void Model_BodyBuilder::store(const GeomShapePtr& theShape,
 133                               const bool theIsStoreSameShapes)
 134 {
 135   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 136   if (aData) {
 137     TDF_Label aShapeLab = aData->shapeLab();
 138     // clean builders
 139     clean();
 140     // store the new shape as primitive
 141     TNaming_Builder aBuilder(aShapeLab);
 142     if (!theShape)
 143       return;  // bad shape
 144     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 145     if (aShape.IsNull())
 146       return;  // null shape inside
 147
 148     if(!theIsStoreSameShapes) {
 149       Handle(TNaming_NamedShape) aNS = TNaming_Tool::NamedShape(aShape, aShapeLab);
 150       if(!aNS.IsNull() && !aNS->IsEmpty()) {
 151         // This shape is already in document, store reference instead of shape;
 152         const TDF_Label aFoundLabel = aNS->Label();
 153         TDF_Reference::Set(aShapeLab, aFoundLabel);
 154         aShapeLab.ForgetAttribute(TNaming_NamedShape::GetID());
 155         return;
 156       }
 157     }
 158
 159     aBuilder.Generated(aShape);
 160     // register name
 161     aShapeLab.ForgetAttribute(TDF_Reference::GetID());
 162     if(!aBuilder.NamedShape()->IsEmpty()) {
 163       Handle(TDataStd_Name) anAttr;
 164       if(aBuilder.NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 165         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 166         if(!aName.empty()) {
 167           std::shared_ptr<Model_Document> aDoc =
 168             std::dynamic_pointer_cast<Model_Document>(document());
 169           aDoc->addNamingName(aBuilder.NamedShape()->Label(), aName);
 170         }
 171       }
 172     }
 173   }
 174 }
 175
 176 void Model_BodyBuilder::storeGenerated(const GeomShapePtr& theFromShape,
 177   const GeomShapePtr& theToShape)
 178 {
 179   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 180   if (aData) {
 181     TDF_Label aShapeLab = aData->shapeLab();
 182     // clean builders
 183     clean();
 184     // store the new shape as primitive
 185     TNaming_Builder aBuilder(aShapeLab);
 186     if (!theFromShape || !theToShape)
 187       return;  // bad shape
 188     TopoDS_Shape aShapeBasis = theFromShape->impl<TopoDS_Shape>();
 189     if (aShapeBasis.IsNull())
 190       return;  // null shape inside
 191     TopoDS_Shape aShapeNew = theToShape->impl<TopoDS_Shape>();
 192     if (aShapeNew.IsNull())
 193       return;  // null shape inside
 194     aBuilder.Generated(aShapeBasis, aShapeNew);
 195     // register name
 196     if(!aBuilder.NamedShape()->IsEmpty()) {
 197       Handle(TDataStd_Name) anAttr;
 198       if(aBuilder.NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 199         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 200         if(!aName.empty()) {
 201           std::shared_ptr<Model_Document> aDoc =
 202             std::dynamic_pointer_cast<Model_Document>(document());
 203           aDoc->addNamingName(aBuilder.NamedShape()->Label(), aName);
 204         }
 205       }
 206     }
 207   }
 208 }
 209
 210 TNaming_Builder* Model_BodyBuilder::builder(const int theTag)
 211 {
 212   std::map<int, TNaming_Builder*>::iterator aFind = myBuilders.find(theTag);
 213   if (aFind == myBuilders.end()) {
 214     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 215     myBuilders[theTag] = new TNaming_Builder(
 216       theTag == 0 ? aData->shapeLab() : aData->shapeLab().FindChild(theTag));
 217     aFind = myBuilders.find(theTag);
 218   }
 219   return aFind->second;
 220 }
 221
 222 void Model_BodyBuilder::storeModified(const GeomShapePtr& theOldShape,
 223                                       const GeomShapePtr& theNewShape,
 224                                       const bool theIsCleanStored)
 225 {
 226   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 227   if (aData) {
 228     // clean builders
 229     if (theIsCleanStored) clean();
 230     // store the new shape as primitive
 231     TNaming_Builder* aBuilder = builder(0);
 232     if (!theOldShape || !theNewShape)
 233       return;  // bad shape
 234     TopoDS_Shape aShapeOld = theOldShape->impl<TopoDS_Shape>();
 235     if (aShapeOld.IsNull())
 236       return;  // null shape inside
 237     TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 238     if (aShapeNew.IsNull())
 239       return;  // null shape inside
 240     aBuilder->Modify(aShapeOld, aShapeNew);
 241     if(!aBuilder->NamedShape()->IsEmpty()) {
 242       Handle(TDataStd_Name) anAttr;
 243       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 244         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 245         if(!aName.empty()) {
 246           std::shared_ptr<Model_Document> aDoc =
 247             std::dynamic_pointer_cast<Model_Document>(document());
 248           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 249         }
 250       }
 251     }
 252   }
 253 }
 254
 255 void  Model_BodyBuilder::storeWithoutNaming(const GeomShapePtr& theShape)
 256 {
 257   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 258   if (aData) {
 259     clean();
 260     if (!theShape.get())
 261       return; // bad shape
 262     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 263     if (aShape.IsNull())
 264       return;  // null shape inside
 265     TNaming_Builder aBuilder(aData->shapeLab());
 266     aBuilder.Select(aShape, aShape);
 267   }
 268 }
 269
 270 void Model_BodyBuilder::clean()
 271 {
 272   TDF_Label aLab = std::dynamic_pointer_cast<Model_Data>(data())->shapeLab();
 273   if (aLab.IsNull())
 274     return;
 275   std::map<int, TNaming_Builder*>::iterator aBuilder = myBuilders.begin();
 276   for(; aBuilder != myBuilders.end(); aBuilder++) {
 277     delete aBuilder->second;
 278     // clear also shapes on cleaned sub-labels (#2241)
 279     Handle(TNaming_NamedShape) aNS;
 280     if (aLab.FindChild(aBuilder->first).FindAttribute(TNaming_NamedShape::GetID(), aNS)) {
 281       aNS->Clear();
 282     }
 283   }
 284   myBuilders.clear();
 285   // remove the old reference (if any)
 286   aLab.ForgetAttribute(TDF_Reference::GetID());
 287   myFreePrimitiveTag = PRIMITIVES_START_TAG;
 288 }
 289
 290 Model_BodyBuilder::~Model_BodyBuilder()
 291 {
 292   clean();
 293 }
 294
 295 void Model_BodyBuilder::buildName(const int theTag, const std::string& theName)
 296 {
 297   std::string aName = theName;
 298   std::string aPrefix = "";
 299   switch (theTag) {
 300     case GENERATED_VERTICES_TAG: aPrefix = aName.empty() ? "Generated_Vertex" : "GV:"; break;
 301     case GENERATED_EDGES_TAG:    aPrefix = aName.empty() ? "Generated_Edge"   : "GE:"; break;
 302     case GENERATED_FACES_TAG:    aPrefix = aName.empty() ? "Generated_Face"   : "GF:"; break;
 303     case MODIFIED_VERTICES_TAG:  aPrefix = aName.empty() ? "Modified_Vertex"  : "MV:"; break;
 304     case MODIFIED_EDGES_TAG:     aPrefix = aName.empty() ? "Modified_Edge"    : "ME:"; break;
 305     case MODIFIED_FACES_TAG:     aPrefix = aName.empty() ? "Modified_Face"    : "MF:"; break;
 306   }
 307   aName.insert(0, aPrefix);
 308
 309   TDataStd_Name::Set(builder(theTag)->NamedShape()->Label(), aName.c_str());
 310 }
 311 void Model_BodyBuilder::generated(const GeomShapePtr& theNewShape,
 312                                   const std::string& theName)
 313 {
 314   TopoDS_Shape aShape = theNewShape->impl<TopoDS_Shape>();
 315   builder(myFreePrimitiveTag)->Generated(aShape);
 316   if (!theName.empty()) {
 317     buildName(myFreePrimitiveTag, theName);
 318   }
 319   ++myFreePrimitiveTag;
 320 }
 321
 322 void Model_BodyBuilder::generated(const GeomShapePtr& theOldShape,
 323                                   const GeomShapePtr& theNewShape,
 324                                   const std::string& theName)
 325 {
 326   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 327   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 328   TopAbs_ShapeEnum aNewShapeType = aNewShape.ShapeType();
 329   int aTag;
 330   if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 331     // TODO: This is a workaround. New shape should be only vertex, edge or face.
 332     TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE : TopAbs_FACE;
 333     aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 334     for (TopExp_Explorer anExp(aNewShape, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 335       builder(aTag)->Generated(anOldShape, anExp.Current());
 336     }
 337     buildName(aTag, theName);
 338   } else {
 339     aTag = getGenerationTag(aNewShape);
 340     if (aTag == INVALID_TAG) return;
 341     builder(aTag)->Generated(anOldShape, aNewShape);
 342     buildName(aTag, theName);
 343   }
 344 }
 345
 346 void Model_BodyBuilder::modified(const GeomShapePtr& theOldShape,
 347                                  const GeomShapePtr& theNewShape,
 348                                  const std::string& theName)
 349 {
 350   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 351   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 352   int aTag = getModificationTag(aNewShape);
 353   if (aTag == INVALID_TAG) return;
 354   builder(aTag)->Modify(anOldShape, aNewShape);
 355   buildName(aTag, theName);
 356 }
 357
 358 void Model_BodyBuilder::deleted(const GeomShapePtr& theOldShape)
 359 {
 360   TopoDS_Shape aShape = theOldShape->impl<TopoDS_Shape>();
 361   builder(DELETED_TAG)->Delete(aShape);
 362 }
 363
 364 void Model_BodyBuilder::loadDeletedShapes(const GeomMakeShapePtr& theAlgo,
 365                                           const GeomShapePtr& theOldShape,
 366                                           const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 367                                           const GeomShapePtr& theShapesToExclude)
 368 {
 369   TopTools_MapOfShape anAlreadyProcessedShapes;
 370   GeomShapePtr aResultShape = shape();
 371   for (GeomAPI_ShapeExplorer anExp(theOldShape, theShapeTypeToExplore);
 372        anExp.more();
 373        anExp.next())
 374   {
 375     GeomShapePtr anOldSubShape = anExp.current();
 376     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 377     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)
 378         || !theAlgo->isDeleted(anOldSubShape)
 379         || aResultShape->isSubShape(anOldSubShape, false)
 380         || (theShapesToExclude.get() && theShapesToExclude->isSubShape(anOldSubShape, false)))
 381     {
 382       continue;
 383     }
 384
 385     ListOfShape aNewShapes;
 386     if (BRepTools_History::IsSupportedType(anOldSubShape_)) { // to avoid crash in #2572
 387       theAlgo->modified(anOldSubShape, aNewShapes);
 388     }
 389
 390     if (aNewShapes.size() == 0
 391         || (aNewShapes.size() == 1 && aNewShapes.front()->isSame(anOldSubShape))) {
 392       builder(DELETED_TAG)->Delete(anOldSubShape_);
 393     }
 394   }
 395 }
 396
 397 static void removeBadShapes(ListOfShape& theShapes)
 398 {
 399   ListOfShape::iterator anIt = theShapes.begin();
 400   while (anIt != theShapes.end()) {
 401     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 402     bool aSkip = aNewShape.IsNull()
 403       || (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 404     if (aSkip) {
 405       ListOfShape::iterator aRemoveIt = anIt++;
 406       theShapes.erase(aRemoveIt);
 407     } else {
 408       ++anIt;
 409     }
 410   }
 411 }
 412
 413 // Keep only the shapes with minimal shape type
 414 static void keepTopLevelShapes(ListOfShape& theShapes,
 415                                const TopoDS_Shape& theRoot,
 416                                const GeomShapePtr& theResultShape = GeomShapePtr())
 417 {
 418   GeomAPI_Shape::ShapeType aKeepShapeType = GeomAPI_Shape::SHAPE;
 419   ListOfShape::iterator anIt = theShapes.begin();
 420   while (anIt != theShapes.end()) {
 421     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 422     bool aSkip = aNewShape.IsNull() ||
 423       (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 424     if (aSkip || theRoot.IsSame(aNewShape) || (theResultShape &&
 425         (!theResultShape->isSubShape(*anIt, false) || theResultShape->isSame(*anIt)))) {
 426       ListOfShape::iterator aRemoveIt = anIt++;
 427       theShapes.erase(aRemoveIt);
 428     } else {
 429       GeomAPI_Shape::ShapeType aType = (*anIt)->shapeType();
 430       if (aType < aKeepShapeType) {
 431         // found a shape with lesser shape type => remove all previous shapes
 432         aKeepShapeType = aType;
 433         theShapes.erase(theShapes.begin(), anIt);
 434         ++anIt;
 435       } else if (aType > aKeepShapeType) {
 436         // shapes with greater shape type should be removed from the list
 437         ListOfShape::iterator aRemoveIt = anIt++;
 438         theShapes.erase(aRemoveIt);
 439       } else
 440         ++anIt;
 441     }
 442   }
 443 }
 444
 445 // returns an ancestor shape-type thaty used for naming-definition of the sub-type
 446 TopAbs_ShapeEnum typeOfAncestor(const TopAbs_ShapeEnum theSubType) {
 447   if (theSubType == TopAbs_VERTEX)
 448     return TopAbs_EDGE;
 449   if (theSubType == TopAbs_EDGE)
 450     return TopAbs_FACE;
 451   return TopAbs_VERTEX; // bad case
 452 }
 453
 454 void Model_BodyBuilder::loadModifiedShapes(const GeomMakeShapePtr& theAlgo,
 455                                            const GeomShapePtr& theOldShape,
 456                                            const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 457                                            const std::string& theName)
 458 {
 459   GeomShapePtr aResultShape = shape();
 460   GeomShapePtr aShapeToExplore = theOldShape;
 461   if (theAlgo->isNewShapesCollected(theOldShape, theShapeTypeToExplore)) {
 462     // use optimized set of old shapes for this
 463     GeomShapePtr aCompound = theAlgo->oldShapesForNew(theOldShape,
 464                                                       aResultShape,
 465                                                       theShapeTypeToExplore);
 466     if (aCompound.get()) aShapeToExplore = aCompound;
 467   }
 468
 469   TopTools_MapOfShape anAlreadyProcessedShapes;
 470   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 471   for (GeomAPI_ShapeExplorer anOldShapeExp(aShapeToExplore, theShapeTypeToExplore);
 472        anOldShapeExp.more();
 473        anOldShapeExp.next())
 474   {
 475     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 476     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 477
 478     // There is no sense to write history if shape already processed
 479     // or old shape does not exist in the document.
 480     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 481     bool anOldSubShapeNotInTree = TNaming_Tool::NamedShape(anOldSubShape_, aData->shapeLab())
 482                                   .IsNull();
 483     if (anOldSubShapeAlreadyProcessed
 484         || anOldSubShapeNotInTree)
 485     {
 486       continue;
 487     }
 488
 489     // Get new shapes.
 490     ListOfShape aNewShapes;
 491     theAlgo->modified(anOldSubShape, aNewShapes);
 492
 493     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 494          aNewShapesIt != aNewShapes.cend();
 495          ++aNewShapesIt)
 496     {
 497       GeomShapePtr aNewShape = *aNewShapesIt;
 498       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 499       bool isGenerated = anOldSubShape_.ShapeType() != aNewShape_.ShapeType();
 500
 501       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 502       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 503       if (aNewShapeIsSameAsOldShape
 504           || aNewShapeIsNotInResultShape)
 505       {
 506         continue;
 507       }
 508
 509       TNaming_Builder* aBuilder;
 510       if (aResultShape->isSame(aNewShape)) {
 511         // keep the modification evolution on the root level (2241 - history propagation issue)
 512         aBuilder = builder(0);
 513         TDF_Label aShapeLab = aBuilder->NamedShape()->Label();
 514         Handle(TDF_Reference) aRef;
 515         if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
 516           // Store only in case if it does not have reference.
 517           continue;
 518         }
 519
 520         // Check if new shape was already stored.
 521         if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_)) continue;
 522
 523         if (!aBuilder->NamedShape().IsNull() &&
 524             ((isGenerated && aBuilder->NamedShape()->Evolution() != TNaming_GENERATED)
 525               || (!isGenerated && aBuilder->NamedShape()->Evolution() != TNaming_MODIFY)))
 526         {
 527           myBuilders.erase(0); // clear old builder to avoid different evolutions crash
 528           aBuilder = builder(0);
 529         }
 530       } else {
 531         int aTag = isGenerated ? getGenerationTag(aNewShape_)
 532                                : getModificationTag(aNewShape_);
 533         aBuilder = builder(aTag);
 534
 535         // Check if new shape was already stored.
 536         if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_)) continue;
 537
 538         buildName(aTag, theName);
 539       }
 540
 541       isGenerated ? aBuilder->Generated(anOldSubShape_, aNewShape_)
 542                   : aBuilder->Modify(anOldSubShape_, aNewShape_);
 543     }
 544   }
 545 }
 546
 547 void Model_BodyBuilder::loadGeneratedShapes(const GeomMakeShapePtr& theAlgo,
 548                                             const GeomShapePtr& theOldShape,
 549                                             const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 550                                             const std::string& theName)
 551 {
 552   TopTools_MapOfShape anAlreadyProcessedShapes;
 553   for (GeomAPI_ShapeExplorer anOldShapeExp(theOldShape, theShapeTypeToExplore);
 554        anOldShapeExp.more();
 555        anOldShapeExp.next())
 556   {
 557     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 558     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 559
 560     // There is no sense to write history if shape already processed.
 561     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)) continue;
 562
 563     // Get new shapes.
 564     ListOfShape aNewShapes;
 565     theAlgo->generated(anOldSubShape, aNewShapes);
 566
 567     keepTopLevelShapes(aNewShapes, anOldSubShape_);
 568
 569     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 570          aNewShapesIt != aNewShapes.cend();
 571          ++aNewShapesIt)
 572     {
 573       GeomShapePtr aNewShape = *aNewShapesIt;
 574       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 575
 576       TopAbs_ShapeEnum aNewShapeType = aNewShape_.ShapeType();
 577       if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 578         // TODO: This is a workaround. New shape should be only edge or face.
 579         TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE
 580                                                                             : TopAbs_FACE;
 581         int aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 582         for (TopExp_Explorer anExp(aNewShape_, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 583           builder(aTag)->Generated(anOldSubShape_, anExp.Current());
 584         }
 585         buildName(aTag, theName);
 586       }
 587       else {
 588         int aTag = getGenerationTag(aNewShape_);
 589         if (aTag == INVALID_TAG) return;
 590         builder(aTag)->Generated(anOldSubShape_, aNewShape_);
 591         buildName(aTag, theName);
 592       }
 593     }
 594   }
 595 }
 596
 597 //=======================================================================
 598 int getDangleShapes(const TopoDS_Shape&           theShapeIn,
 599   const TopAbs_ShapeEnum        theGeneratedFrom,
 600   TopTools_DataMapOfShapeShape& theDangles)
 601 {
 602   theDangles.Clear();
 603   TopTools_IndexedDataMapOfShapeListOfShape subShapeAndAncestors;
 604   TopAbs_ShapeEnum GeneratedTo;
 605   if (theGeneratedFrom == TopAbs_FACE) GeneratedTo = TopAbs_EDGE;
 606   else if (theGeneratedFrom == TopAbs_EDGE) GeneratedTo = TopAbs_VERTEX;
 607   else return Standard_False;
 608   TopExp::MapShapesAndAncestors(theShapeIn, GeneratedTo, theGeneratedFrom, subShapeAndAncestors);
 609   for (Standard_Integer i = 1; i <= subShapeAndAncestors.Extent(); i++) {
 610     const TopoDS_Shape& mayBeDangle = subShapeAndAncestors.FindKey(i);
 611     const TopTools_ListOfShape& ancestors = subShapeAndAncestors.FindFromIndex(i);
 612     if (ancestors.Extent() == 1) theDangles.Bind(ancestors.First(), mayBeDangle);
 613   }
 614   return theDangles.Extent();
 615 }
 616
 617 //=======================================================================
 618 void loadGeneratedDangleShapes(
 619   const TopoDS_Shape&      theShapeIn,
 620   const TopAbs_ShapeEnum   theGeneratedFrom,
 621   TNaming_Builder *        theBuilder)
 622 {
 623   TopTools_DataMapOfShapeShape dangles;
 624   if (!getDangleShapes(theShapeIn, theGeneratedFrom, dangles)) return;
 625   TopTools_DataMapIteratorOfDataMapOfShapeShape itr(dangles);
 626   for (; itr.More(); itr.Next())
 627     theBuilder->Generated(itr.Key(), itr.Value());
 628 }
 629
 630 //=======================================================================
 631 void Model_BodyBuilder::loadNextLevels(GeomShapePtr theShape,
 632                                        const std::string& theName)
 633 {
 634   if(theShape->isNull()) return;
 635   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 636   std::string aName;
 637   if (aShape.ShapeType() == TopAbs_SOLID) {
 638     TopExp_Explorer expl(aShape, TopAbs_FACE);
 639     for (; expl.More(); expl.Next()) {
 640       builder(myFreePrimitiveTag)->Generated(expl.Current());
 641       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 642       aName = theName + "_" + aStr.ToCString();
 643       buildName(myFreePrimitiveTag, aName);
 644       ++myFreePrimitiveTag;
 645     }
 646   }
 647   else if (aShape.ShapeType() == TopAbs_SHELL || aShape.ShapeType() == TopAbs_FACE) {
 648     // load faces and all the free edges
 649     TopTools_IndexedMapOfShape Faces;
 650     TopExp::MapShapes(aShape, TopAbs_FACE, Faces);
 651     if (Faces.Extent() > 1 || (aShape.ShapeType() == TopAbs_SHELL && Faces.Extent() == 1)) {
 652       TopExp_Explorer expl(aShape, TopAbs_FACE);
 653       for (; expl.More(); expl.Next()) {
 654         builder(myFreePrimitiveTag)->Generated(expl.Current());
 655         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 656         aName = theName + "_" + aStr.ToCString();
 657         buildName(myFreePrimitiveTag, aName);
 658         ++myFreePrimitiveTag;
 659       }
 660     }
 661     TopTools_IndexedDataMapOfShapeListOfShape anEdgeAndNeighbourFaces;
 662     TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, anEdgeAndNeighbourFaces);
 663     for (Standard_Integer i = 1; i <= anEdgeAndNeighbourFaces.Extent(); i++)
 664     {
 665       const TopTools_ListOfShape& aLL = anEdgeAndNeighbourFaces.FindFromIndex(i);
 666       if (aLL.Extent() < 2) {
 667         if (BRep_Tool::Degenerated(TopoDS::Edge(anEdgeAndNeighbourFaces.FindKey(i))))
 668           continue;
 669         builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 670         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 671         aName = theName + "_" + aStr.ToCString();
 672         buildName(myFreePrimitiveTag, aName);
 673         ++myFreePrimitiveTag;
 674       } else {
 675         TopTools_ListIteratorOfListOfShape anIter(aLL);
 676         const TopoDS_Face& aFace = TopoDS::Face(anIter.Value());
 677         anIter.Next();
 678         if(aFace.IsEqual(anIter.Value())) {
 679           builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 680           TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 681           aName = theName + "_" + aStr.ToCString();
 682           buildName(myFreePrimitiveTag, aName);
 683           ++myFreePrimitiveTag;
 684         }
 685       }
 686     }
 687   } else if (aShape.ShapeType() == TopAbs_WIRE) {
 688     TopTools_IndexedMapOfShape Edges;
 689     BRepTools::Map3DEdges(aShape, Edges);
 690     if (Edges.Extent() == 1) {
 691       builder(myFreePrimitiveTag++)->Generated(Edges.FindKey(1));
 692       TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 693       for (; expl.More(); expl.Next()) {
 694         builder(myFreePrimitiveTag)->Generated(expl.Current());
 695         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 696         aName = theName + "_" + aStr.ToCString();
 697         buildName(myFreePrimitiveTag, aName);
 698         ++myFreePrimitiveTag;
 699       }
 700     } else {
 701       TopExp_Explorer expl(aShape, TopAbs_EDGE);
 702       for (; expl.More(); expl.Next()) {
 703         builder(myFreePrimitiveTag)->Generated(expl.Current());
 704         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 705         aName = theName + "_" + aStr.ToCString();
 706         buildName(myFreePrimitiveTag, aName);
 707         ++myFreePrimitiveTag;
 708       }
 709       // and load generated vertices.
 710       TopTools_DataMapOfShapeShape generated;
 711       if (getDangleShapes(aShape, TopAbs_EDGE, generated))
 712       {
 713         TNaming_Builder* pBuilder = builder(myFreePrimitiveTag++);
 714         loadGeneratedDangleShapes(aShape, TopAbs_EDGE, pBuilder);
 715       }
 716     }
 717   } else if (aShape.ShapeType() == TopAbs_EDGE) {
 718     TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 719     for (; expl.More(); expl.Next()) {
 720       builder(myFreePrimitiveTag)->Generated(expl.Current());
 721       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 722       aName = theName + "_" + aStr.ToCString();
 723       buildName(myFreePrimitiveTag, aName);
 724       ++myFreePrimitiveTag;
 725     }
 726   }
 727 }
 728
 729 //=======================================================================
 730 int findAmbiguities(const TopoDS_Shape&           theShapeIn,
 731   TopTools_ListOfShape&   theList)
 732 {
 733   theList.Clear();
 734   // edges -> ancestor faces list
 735   TopTools_IndexedDataMapOfShapeListOfShape aSubShapeAndAncestors;
 736   TopExp::MapShapesAndAncestors(theShapeIn, TopAbs_EDGE, TopAbs_FACE, aSubShapeAndAncestors);
 737   // keeps the shapes which are already in the resulting list
 738   TopTools_MapOfShape alreadyThere;
 739   // map from faces identifier (combination of hash-codes) to list of edges produced such ID
 740   NCollection_DataMap<int, NCollection_List<TopoDS_Shape> > aFacesIDs;
 741
 742   TopTools_IndexedDataMapOfShapeListOfShape::Iterator anAncestorsIter(aSubShapeAndAncestors);
 743   for (; anAncestorsIter.More(); anAncestorsIter.Next()) {
 744     const TopTools_ListOfShape& ancestors = anAncestorsIter.Value();
 745     if (ancestors.Extent() < 2)
 746       continue;
 747     Standard_Integer anID = 0;
 748     for(TopTools_ListIteratorOfListOfShape aFaceIt(ancestors); aFaceIt.More(); aFaceIt.Next()) {
 749       anID ^= HashCode(aFaceIt.ChangeValue(), 1990657); // Pierpont prime
 750     }
 751     if (aFacesIDs.IsBound(anID)) { // there found same edge, check they really have same faces
 752       const NCollection_List<TopoDS_Shape>& aSameFaces1 =
 753         aSubShapeAndAncestors.FindFromKey(anAncestorsIter.Key());
 754       NCollection_List<TopoDS_Shape>::Iterator aSameEdge(aFacesIDs.ChangeFind(anID));
 755       for(; aSameEdge.More(); aSameEdge.Next()) {
 756         const NCollection_List<TopoDS_Shape>& aSameFaces2 =
 757           aSubShapeAndAncestors.FindFromKey(aSameEdge.Value());
 758         if (aSameFaces2.Extent() != aSameFaces1.Extent()) // the number of faces is different
 759           break;
 760
 761         NCollection_List<TopoDS_Shape>::Iterator aFaceIter1(aSameFaces1);
 762         for(; aFaceIter1.More(); aFaceIter1.Next()) {
 763           NCollection_List<TopoDS_Shape>::Iterator aFaceIter2(aSameFaces2);
 764           for(; aFaceIter2.More(); aFaceIter2.Next()) {
 765             if (aFaceIter1.Value().IsSame(aFaceIter2.Value()))
 766               break;
 767           }
 768           if (!aFaceIter2.More()) // aFaceIter1 contains a face, which is not in aFaceIter2
 769             break;
 770         }
 771         if (!aFaceIter1.More()) { // all the faces are same => put to the result
 772           if (alreadyThere.Add(aSameEdge.Value()))
 773             theList.Append(aSameEdge.Value());
 774           if (alreadyThere.Add(anAncestorsIter.Key()))
 775             theList.Append(anAncestorsIter.Key());
 776         }
 777       }
 778     } else { // ID is unique, just add this edge
 779       aFacesIDs.Bind(anID, NCollection_List<TopoDS_Shape>());
 780     }
 781     aFacesIDs.ChangeFind(anID).Append(anAncestorsIter.Key()); // add to the list anyway
 782   }
 783   return theList.Extent();
 784 }
 785
 786 //=======================================================================
 787 void Model_BodyBuilder::loadFirstLevel(GeomShapePtr theShape, const std::string& theName)
 788 {
 789   if(theShape->isNull()) return;
 790   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 791   std::string aName;
 792   if (aShape.ShapeType() == TopAbs_COMPOUND || aShape.ShapeType() == TopAbs_COMPSOLID) {
 793     TopoDS_Iterator itr(aShape);
 794     for (; itr.More(); itr.Next()) {
 795       builder(myFreePrimitiveTag)->Generated(itr.Value());
 796       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 797       aName = theName + "_" + aStr.ToCString();
 798       buildName(myFreePrimitiveTag, aName);
 799       ++myFreePrimitiveTag;
 800       if (itr.Value().ShapeType() == TopAbs_COMPOUND ||
 801         itr.Value().ShapeType() == TopAbs_COMPSOLID)
 802       {
 803         GeomShapePtr itrShape(new GeomAPI_Shape());
 804         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 805         loadFirstLevel(itrShape, theName);
 806       } else {
 807         GeomShapePtr itrShape(new GeomAPI_Shape());
 808         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 809         loadNextLevels(itrShape, theName);
 810       }
 811     }
 812   } else {
 813     GeomShapePtr itrShape(new GeomAPI_Shape());
 814     itrShape->setImpl(new TopoDS_Shape(aShape));
 815     loadNextLevels(itrShape, theName);
 816   }
 817   TopTools_ListOfShape   aList;
 818   if(findAmbiguities(aShape, aList)) {
 819     TopTools_ListIteratorOfListOfShape it(aList);
 820     for (; it.More(); it.Next(), ++myFreePrimitiveTag) {
 821       builder(myFreePrimitiveTag)->Generated(it.Value());
 822       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 823       aName = theName + "_" + aStr.ToCString();
 824       buildName(myFreePrimitiveTag, aName);
 825     }
 826   }
 827 }
 828
 829 //=======================================================================
 830 void Model_BodyBuilder::loadDisconnectedEdges(GeomShapePtr theShape, const std::string& theName)
 831 {
 832   if(theShape->isNull()) return;
 833   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 834   TopTools_DataMapOfShapeListOfShape edgeNaborFaces;
 835   TopTools_ListOfShape empty;
 836   TopExp_Explorer explF(aShape, TopAbs_FACE);
 837   for (; explF.More(); explF.Next()) {
 838     const TopoDS_Shape& aFace = explF.Current();
 839     TopExp_Explorer explV(aFace, TopAbs_EDGE);
 840     for (; explV.More(); explV.Next()) {
 841       const TopoDS_Shape& anEdge = explV.Current();
 842       if (!edgeNaborFaces.IsBound(anEdge)) edgeNaborFaces.Bind(anEdge, empty);
 843       Standard_Boolean faceIsNew = Standard_True;
 844       TopTools_ListIteratorOfListOfShape itrF(edgeNaborFaces.Find(anEdge));
 845       for (; itrF.More(); itrF.Next()) {
 846         if (itrF.Value().IsSame(aFace)) {
 847           faceIsNew = Standard_False;
 848           break;
 849         }
 850       }
 851       if (faceIsNew)
 852         edgeNaborFaces.ChangeFind(anEdge).Append(aFace);
 853     }
 854   }
 855
 856   TopTools_MapOfShape anEdgesToDelete;
 857   TopExp_Explorer anEx(aShape,TopAbs_EDGE);
 858   std::string aName;
 859   for(;anEx.More();anEx.Next()) {
 860     Standard_Boolean aC0 = Standard_False;
 861     TopoDS_Shape anEdge1 = anEx.Current();
 862     if (edgeNaborFaces.IsBound(anEdge1)) {
 863       const TopTools_ListOfShape& aList1 = edgeNaborFaces.Find(anEdge1);
 864       if (aList1.Extent()<2) continue;
 865       TopTools_DataMapIteratorOfDataMapOfShapeListOfShape itr(edgeNaborFaces);
 866       for (; itr.More(); itr.Next()) {
 867         TopoDS_Shape anEdge2 = itr.Key();
 868         if(anEdgesToDelete.Contains(anEdge2)) continue;
 869         if (anEdge1.IsSame(anEdge2)) continue;
 870         const TopTools_ListOfShape& aList2 = itr.Value();
 871         // compare lists of the neighbour faces of edge1 and edge2
 872         if (aList1.Extent() == aList2.Extent()) {
 873           Standard_Integer aMatches = 0;
 874           for(TopTools_ListIteratorOfListOfShape aLIter1(aList1);aLIter1.More();aLIter1.Next())
 875             for(TopTools_ListIteratorOfListOfShape aLIter2(aList2);aLIter2.More();aLIter2.Next())
 876               if (aLIter1.Value().IsSame(aLIter2.Value())) aMatches++;
 877           if (aMatches == aList1.Extent()) {
 878             aC0=Standard_True;
 879             builder(myFreePrimitiveTag)->Generated(anEdge2);
 880             anEdgesToDelete.Add(anEdge2);
 881             TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 882             aName = theName + "_" + aStr.ToCString();
 883             buildName(myFreePrimitiveTag, aName);
 884             ++myFreePrimitiveTag;
 885           }
 886         }
 887       }
 888       TopTools_MapIteratorOfMapOfShape itDelete(anEdgesToDelete);
 889       for(;itDelete.More();itDelete.Next())
 890         edgeNaborFaces.UnBind(itDelete.Key());
 891       edgeNaborFaces.UnBind(anEdge1);
 892     }
 893     if (aC0) {
 894       builder(myFreePrimitiveTag)->Generated(anEdge1);
 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 void Model_BodyBuilder::loadDisconnectedVertexes(GeomShapePtr theShape,
 904                                                  const std::string& theName)
 905 {
 906   if(theShape->isNull()) return;
 907   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 908   TopTools_DataMapOfShapeListOfShape vertexNaborEdges;
 909   TopTools_ListOfShape empty;
 910   TopExp_Explorer explF(aShape, TopAbs_EDGE);
 911   for (; explF.More(); explF.Next()) {
 912     const TopoDS_Shape& anEdge = explF.Current();
 913     TopExp_Explorer explV(anEdge, TopAbs_VERTEX);
 914     for (; explV.More(); explV.Next()) {
 915       const TopoDS_Shape& aVertex = explV.Current();
 916       if (!vertexNaborEdges.IsBound(aVertex)) vertexNaborEdges.Bind(aVertex, empty);
 917       Standard_Boolean faceIsNew = Standard_True;
 918       TopTools_ListIteratorOfListOfShape itrF(vertexNaborEdges.Find(aVertex));
 919       for (; itrF.More(); itrF.Next()) {
 920         if (itrF.Value().IsSame(anEdge)) {
 921           faceIsNew = Standard_False;
 922           break;
 923         }
 924       }
 925       if (faceIsNew) {
 926         vertexNaborEdges.ChangeFind(aVertex).Append(anEdge);
 927       }
 928     }
 929   }
 930   std::string aName;
 931   TopTools_DataMapIteratorOfDataMapOfShapeListOfShape itr(vertexNaborEdges);
 932   for (; itr.More(); itr.Next()) {
 933     const TopTools_ListOfShape& naborEdges = itr.Value();
 934     if (naborEdges.Extent() < 2) {
 935       builder(myFreePrimitiveTag)->Generated(itr.Key());
 936       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 937       aName = theName + "_" + aStr.ToCString();
 938       buildName(myFreePrimitiveTag, aName);
 939       ++myFreePrimitiveTag;
 940     }
 941   }
 942 }
 943
 944 GeomShapePtr Model_BodyBuilder::shape()
 945 {
 946   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 947   if (aData && aData->isValid()) {
 948     TDF_Label aShapeLab = aData->shapeLab();
 949     Handle(TDF_Reference) aRef;
 950     if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
 951       aShapeLab = aRef->Get();
 952     }
 953     Handle(TNaming_NamedShape) aName;
 954     if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
 955       TopoDS_Shape aShape = aName->Get();
 956       if (!aShape.IsNull()) {
 957         GeomShapePtr aRes(new GeomAPI_Shape);
 958         aRes->setImpl(new TopoDS_Shape(aShape));
 959         return aRes;
 960       }
 961     }
 962   }
 963   return GeomShapePtr();
 964 }
 965
 966 bool Model_BodyBuilder::isLatestEqual(const GeomShapePtr& theShape)
 967 {
 968   if (theShape.get()) {
 969     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 970     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 971     if (aData) {
 972       TDF_Label aShapeLab = aData->shapeLab();
 973       Handle(TNaming_NamedShape) aName;
 974       if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
 975         TopoDS_Shape aLatest = TNaming_Tool::CurrentShape(aName);
 976         if (aLatest.IsNull())
 977           return false;
 978         if (aLatest.IsEqual(aShape))
 979           return true;
 980         // check sub-shapes for comp-solids:
 981         for (TopExp_Explorer anExp(aShape, aLatest.ShapeType()); anExp.More(); anExp.Next()) {
 982           if (aLatest.IsEqual(anExp.Current()))
 983             return true;
 984         }
 985       }
 986     }
 987   }
 988   return false;
 989 }