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     TDF_Label& aShapeLab = aData->shapeLab();
 229     // clean builders
 230     if (theIsCleanStored) clean();
 231     // store the new shape as primitive
 232     TNaming_Builder* aBuilder = builder(0);
 233     if (!theOldShape || !theNewShape)
 234       return;  // bad shape
 235     TopoDS_Shape aShapeOld = theOldShape->impl<TopoDS_Shape>();
 236     if (aShapeOld.IsNull())
 237       return;  // null shape inside
 238     TopoDS_Shape aShapeNew = theNewShape->impl<TopoDS_Shape>();
 239     if (aShapeNew.IsNull())
 240       return;  // null shape inside
 241     aBuilder->Modify(aShapeOld, aShapeNew);
 242     if(!aBuilder->NamedShape()->IsEmpty()) {
 243       Handle(TDataStd_Name) anAttr;
 244       if(aBuilder->NamedShape()->Label().FindAttribute(TDataStd_Name::GetID(),anAttr)) {
 245         std::string aName (TCollection_AsciiString(anAttr->Get()).ToCString());
 246         if(!aName.empty()) {
 247           std::shared_ptr<Model_Document> aDoc =
 248             std::dynamic_pointer_cast<Model_Document>(document());
 249           aDoc->addNamingName(aBuilder->NamedShape()->Label(), aName);
 250         }
 251       }
 252     }
 253   }
 254 }
 255
 256 void  Model_BodyBuilder::storeWithoutNaming(const GeomShapePtr& theShape)
 257 {
 258   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 259   if (aData) {
 260     clean();
 261     if (!theShape.get())
 262       return; // bad shape
 263     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 264     if (aShape.IsNull())
 265       return;  // null shape inside
 266     TNaming_Builder aBuilder(aData->shapeLab());
 267     aBuilder.Select(aShape, aShape);
 268   }
 269 }
 270
 271 void Model_BodyBuilder::clean()
 272 {
 273   TDF_Label aLab = std::dynamic_pointer_cast<Model_Data>(data())->shapeLab();
 274   if (aLab.IsNull())
 275     return;
 276   std::map<int, TNaming_Builder*>::iterator aBuilder = myBuilders.begin();
 277   for(; aBuilder != myBuilders.end(); aBuilder++) {
 278     delete aBuilder->second;
 279     // clear also shapes on cleaned sub-labels (#2241)
 280     Handle(TNaming_NamedShape) aNS;
 281     if (aLab.FindChild(aBuilder->first).FindAttribute(TNaming_NamedShape::GetID(), aNS)) {
 282       aNS->Clear();
 283     }
 284   }
 285   myBuilders.clear();
 286   // remove the old reference (if any)
 287   aLab.ForgetAttribute(TDF_Reference::GetID());
 288   myFreePrimitiveTag = PRIMITIVES_START_TAG;
 289 }
 290
 291 Model_BodyBuilder::~Model_BodyBuilder()
 292 {
 293   clean();
 294 }
 295
 296 void Model_BodyBuilder::buildName(const int theTag, const std::string& theName)
 297 {
 298   std::shared_ptr<Model_Document> aDoc = std::dynamic_pointer_cast<Model_Document>(document());
 299   std::string aName = theName;
 300   std::string aPrefix = "";
 301   switch (theTag) {
 302     case GENERATED_VERTICES_TAG: aPrefix = aName.empty() ? "Generated_Vertex" : "GV:"; break;
 303     case GENERATED_EDGES_TAG:    aPrefix = aName.empty() ? "Generated_Edge"   : "GE:"; break;
 304     case GENERATED_FACES_TAG:    aPrefix = aName.empty() ? "Generated_Face"   : "GF:"; break;
 305     case MODIFIED_VERTICES_TAG:  aPrefix = aName.empty() ? "Modified_Vertex"  : "MV:"; break;
 306     case MODIFIED_EDGES_TAG:     aPrefix = aName.empty() ? "Modified_Edge"    : "ME:"; break;
 307     case MODIFIED_FACES_TAG:     aPrefix = aName.empty() ? "Modified_Face"    : "MF:"; break;
 308   }
 309   aName.insert(0, aPrefix);
 310
 311   TDataStd_Name::Set(builder(theTag)->NamedShape()->Label(), aName.c_str());
 312 }
 313 void Model_BodyBuilder::generated(const GeomShapePtr& theNewShape,
 314                                   const std::string& theName)
 315 {
 316   TopoDS_Shape aShape = theNewShape->impl<TopoDS_Shape>();
 317   builder(myFreePrimitiveTag)->Generated(aShape);
 318   if (!theName.empty()) {
 319     buildName(myFreePrimitiveTag, theName);
 320   }
 321
 322   ++myFreePrimitiveTag;
 323 }
 324
 325 void Model_BodyBuilder::generated(const GeomShapePtr& theOldShape,
 326                                   const GeomShapePtr& theNewShape,
 327                                   const std::string& theName)
 328 {
 329   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 330   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 331   TopAbs_ShapeEnum aNewShapeType = aNewShape.ShapeType();
 332   int aTag;
 333   if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 334     // TODO: This is a workaround. New shape should be only vertex, edge or face.
 335     TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE : TopAbs_FACE;
 336     aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 337     for (TopExp_Explorer anExp(aNewShape, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 338       builder(aTag)->Generated(anOldShape, anExp.Current());
 339     }
 340     buildName(aTag, theName);
 341   } else {
 342     aTag = getGenerationTag(aNewShape);
 343     if (aTag == INVALID_TAG) return;
 344     builder(aTag)->Generated(anOldShape, aNewShape);
 345     buildName(aTag, theName);
 346   }
 347 }
 348
 349 void Model_BodyBuilder::modified(const GeomShapePtr& theOldShape,
 350                                  const GeomShapePtr& theNewShape,
 351                                  const std::string& theName)
 352 {
 353   TopoDS_Shape anOldShape = theOldShape->impl<TopoDS_Shape>();
 354   TopoDS_Shape aNewShape = theNewShape->impl<TopoDS_Shape>();
 355   int aTag = getModificationTag(aNewShape);
 356   if (aTag == INVALID_TAG) return;
 357   builder(aTag)->Modify(anOldShape, aNewShape);
 358   buildName(aTag, theName);
 359 }
 360
 361 void Model_BodyBuilder::deleted(const GeomShapePtr& theOldShape)
 362 {
 363   TopoDS_Shape aShape = theOldShape->impl<TopoDS_Shape>();
 364   builder(DELETED_TAG)->Delete(aShape);
 365 }
 366
 367 void Model_BodyBuilder::loadDeletedShapes(const GeomMakeShapePtr& theAlgo,
 368                                           const GeomShapePtr& theOldShape,
 369                                           const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 370                                           const GeomShapePtr& theShapesToExclude)
 371 {
 372   TopTools_MapOfShape anAlreadyProcessedShapes;
 373   GeomShapePtr aResultShape = shape();
 374   for (GeomAPI_ShapeExplorer anExp(theOldShape, theShapeTypeToExplore);
 375        anExp.more();
 376        anExp.next())
 377   {
 378     GeomShapePtr anOldSubShape = anExp.current();
 379     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 380     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)
 381         || !theAlgo->isDeleted(anOldSubShape)
 382         || aResultShape->isSubShape(anOldSubShape, false)
 383         || (theShapesToExclude.get() && theShapesToExclude->isSubShape(anOldSubShape, false)))
 384     {
 385       continue;
 386     }
 387
 388     ListOfShape aNewShapes;
 389     if (BRepTools_History::IsSupportedType(anOldSubShape_)) { // to avoid crash in #2572
 390       theAlgo->modified(anOldSubShape, aNewShapes);
 391     }
 392
 393     if (aNewShapes.size() == 0
 394         || (aNewShapes.size() == 1 && aNewShapes.front()->isSame(anOldSubShape))) {
 395       builder(DELETED_TAG)->Delete(anOldSubShape_);
 396     }
 397   }
 398 }
 399
 400 static void removeBadShapes(ListOfShape& theShapes)
 401 {
 402   ListOfShape::iterator anIt = theShapes.begin();
 403   while (anIt != theShapes.end()) {
 404     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 405     bool aSkip = aNewShape.IsNull()
 406       || (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 407     if (aSkip) {
 408       ListOfShape::iterator aRemoveIt = anIt++;
 409       theShapes.erase(aRemoveIt);
 410     } else {
 411       ++anIt;
 412     }
 413   }
 414 }
 415
 416 // Keep only the shapes with minimal shape type
 417 static void keepTopLevelShapes(ListOfShape& theShapes,
 418                                const TopoDS_Shape& theRoot,
 419                                const GeomShapePtr& theResultShape = GeomShapePtr())
 420 {
 421   GeomAPI_Shape::ShapeType aKeepShapeType = GeomAPI_Shape::SHAPE;
 422   ListOfShape::iterator anIt = theShapes.begin();
 423   while (anIt != theShapes.end()) {
 424     TopoDS_Shape aNewShape = (*anIt)->impl<TopoDS_Shape>();
 425     bool aSkip = aNewShape.IsNull() ||
 426       (aNewShape.ShapeType() == TopAbs_EDGE && BRep_Tool::Degenerated(TopoDS::Edge(aNewShape)));
 427     if (aSkip || theRoot.IsSame(aNewShape) || (theResultShape &&
 428         (!theResultShape->isSubShape(*anIt, false) || theResultShape->isSame(*anIt)))) {
 429       ListOfShape::iterator aRemoveIt = anIt++;
 430       theShapes.erase(aRemoveIt);
 431     } else {
 432       GeomAPI_Shape::ShapeType aType = (*anIt)->shapeType();
 433       if (aType < aKeepShapeType) {
 434         // found a shape with lesser shape type => remove all previous shapes
 435         aKeepShapeType = aType;
 436         theShapes.erase(theShapes.begin(), anIt);
 437         ++anIt;
 438       } else if (aType > aKeepShapeType) {
 439         // shapes with greater shape type should be removed from the list
 440         ListOfShape::iterator aRemoveIt = anIt++;
 441         theShapes.erase(aRemoveIt);
 442       } else
 443         ++anIt;
 444     }
 445   }
 446 }
 447
 448 // returns an ancestor shape-type thaty used for naming-definition of the sub-type
 449 TopAbs_ShapeEnum typeOfAncestor(const TopAbs_ShapeEnum theSubType) {
 450   if (theSubType == TopAbs_VERTEX)
 451     return TopAbs_EDGE;
 452   if (theSubType == TopAbs_EDGE)
 453     return TopAbs_FACE;
 454   return TopAbs_VERTEX; // bad case
 455 }
 456
 457 void Model_BodyBuilder::loadModifiedShapes(const GeomMakeShapePtr& theAlgo,
 458                                            const GeomShapePtr& theOldShape,
 459                                            const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 460                                            const std::string& theName)
 461 {
 462   GeomShapePtr aResultShape = shape();
 463   GeomShapePtr aShapeToExplore = theOldShape;
 464   if (theAlgo->isNewShapesCollected(theOldShape, theShapeTypeToExplore)) {
 465     // use optimized set of old shapes for this
 466     GeomShapePtr aCompound = theAlgo->oldShapesForNew(theOldShape,
 467                                                       aResultShape,
 468                                                       theShapeTypeToExplore);
 469     if (aCompound.get()) aShapeToExplore = aCompound;
 470   }
 471
 472   TopTools_MapOfShape anAlreadyProcessedShapes;
 473   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 474   for (GeomAPI_ShapeExplorer anOldShapeExp(aShapeToExplore, theShapeTypeToExplore);
 475        anOldShapeExp.more();
 476        anOldShapeExp.next())
 477   {
 478     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 479     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 480
 481     // There is no sense to write history if shape already processed
 482     // or old shape does not exist in the document.
 483     bool anOldSubShapeAlreadyProcessed = !anAlreadyProcessedShapes.Add(anOldSubShape_);
 484     bool anOldSubShapeNotInTree = TNaming_Tool::NamedShape(anOldSubShape_, aData->shapeLab())
 485                                   .IsNull();
 486     if (anOldSubShapeAlreadyProcessed
 487         || anOldSubShapeNotInTree)
 488     {
 489       continue;
 490     }
 491
 492     // Get new shapes.
 493     ListOfShape aNewShapes;
 494     theAlgo->modified(anOldSubShape, aNewShapes);
 495
 496     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 497          aNewShapesIt != aNewShapes.cend();
 498          ++aNewShapesIt)
 499     {
 500       GeomShapePtr aNewShape = *aNewShapesIt;
 501       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 502       bool isGenerated = anOldSubShape_.ShapeType() != aNewShape_.ShapeType();
 503
 504       bool aNewShapeIsSameAsOldShape = anOldSubShape->isSame(aNewShape);
 505       bool aNewShapeIsNotInResultShape = !aResultShape->isSubShape(aNewShape, false);
 506       if (aNewShapeIsSameAsOldShape
 507           || aNewShapeIsNotInResultShape)
 508       {
 509         continue;
 510       }
 511
 512       TNaming_Builder* aBuilder;
 513       if (aResultShape->isSame(aNewShape)) {
 514         // keep the modification evolution on the root level (2241 - history propagation issue)
 515         aBuilder = builder(0);
 516         TDF_Label aShapeLab = aBuilder->NamedShape()->Label();
 517         Handle(TDF_Reference) aRef;
 518         if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
 519           // Store only in case if it does not have reference.
 520           continue;
 521         }
 522
 523         // Check if new shape was already stored.
 524         if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_)) continue;
 525
 526         if (!aBuilder->NamedShape().IsNull() &&
 527             ((isGenerated && aBuilder->NamedShape()->Evolution() != TNaming_GENERATED)
 528               || (!isGenerated && aBuilder->NamedShape()->Evolution() != TNaming_MODIFY)))
 529         {
 530           myBuilders.erase(0); // clear old builder to avoid different evolutions crash
 531           aBuilder = builder(0);
 532         }
 533       } else {
 534         int aTag = isGenerated ? getGenerationTag(aNewShape_)
 535                                : getModificationTag(aNewShape_);
 536         aBuilder = builder(aTag);
 537
 538         // Check if new shape was already stored.
 539         if (isAlreadyStored(aBuilder, anOldSubShape_, aNewShape_)) continue;
 540
 541         buildName(aTag, theName);
 542       }
 543
 544       isGenerated ? aBuilder->Generated(anOldSubShape_, aNewShape_)
 545                   : aBuilder->Modify(anOldSubShape_, aNewShape_);
 546     }
 547   }
 548 }
 549
 550 void Model_BodyBuilder::loadGeneratedShapes(const GeomMakeShapePtr& theAlgo,
 551                                             const GeomShapePtr& theOldShape,
 552                                             const GeomAPI_Shape::ShapeType theShapeTypeToExplore,
 553                                             const std::string& theName)
 554 {
 555   TopTools_MapOfShape anAlreadyProcessedShapes;
 556   for (GeomAPI_ShapeExplorer anOldShapeExp(theOldShape, theShapeTypeToExplore);
 557        anOldShapeExp.more();
 558        anOldShapeExp.next())
 559   {
 560     GeomShapePtr anOldSubShape = anOldShapeExp.current();
 561     const TopoDS_Shape& anOldSubShape_ = anOldSubShape->impl<TopoDS_Shape>();
 562
 563     // There is no sense to write history if shape already processed.
 564     if (!anAlreadyProcessedShapes.Add(anOldSubShape_)) continue;
 565
 566     // Get new shapes.
 567     ListOfShape aNewShapes;
 568     theAlgo->generated(anOldSubShape, aNewShapes);
 569
 570     keepTopLevelShapes(aNewShapes, anOldSubShape_);
 571
 572     for (ListOfShape::const_iterator aNewShapesIt = aNewShapes.cbegin();
 573          aNewShapesIt != aNewShapes.cend();
 574          ++aNewShapesIt)
 575     {
 576       GeomShapePtr aNewShape = *aNewShapesIt;
 577       const TopoDS_Shape& aNewShape_ = aNewShape->impl<TopoDS_Shape>();
 578
 579       TopAbs_ShapeEnum aNewShapeType = aNewShape_.ShapeType();
 580       if (aNewShapeType == TopAbs_WIRE || aNewShapeType == TopAbs_SHELL) {
 581         // TODO: This is a workaround. New shape should be only edge or face.
 582         TopAbs_ShapeEnum aShapeTypeToExplore = aNewShapeType == TopAbs_WIRE ? TopAbs_EDGE
 583                                                                             : TopAbs_FACE;
 584         int aTag = TopAbs_WIRE ? GENERATED_EDGES_TAG : GENERATED_FACES_TAG;
 585         for (TopExp_Explorer anExp(aNewShape_, aShapeTypeToExplore); anExp.More(); anExp.Next()) {
 586           builder(aTag)->Generated(anOldSubShape_, anExp.Current());
 587         }
 588         buildName(aTag, theName);
 589       }
 590       else {
 591         int aTag = getGenerationTag(aNewShape_);
 592         if (aTag == INVALID_TAG) return;
 593         builder(aTag)->Generated(anOldSubShape_, aNewShape_);
 594         buildName(aTag, theName);
 595       }
 596     }
 597   }
 598 }
 599
 600 //=======================================================================
 601 int getDangleShapes(const TopoDS_Shape&           theShapeIn,
 602   const TopAbs_ShapeEnum        theGeneratedFrom,
 603   TopTools_DataMapOfShapeShape& theDangles)
 604 {
 605   theDangles.Clear();
 606   TopTools_IndexedDataMapOfShapeListOfShape subShapeAndAncestors;
 607   TopAbs_ShapeEnum GeneratedTo;
 608   if (theGeneratedFrom == TopAbs_FACE) GeneratedTo = TopAbs_EDGE;
 609   else if (theGeneratedFrom == TopAbs_EDGE) GeneratedTo = TopAbs_VERTEX;
 610   else return Standard_False;
 611   TopExp::MapShapesAndAncestors(theShapeIn, GeneratedTo, theGeneratedFrom, subShapeAndAncestors);
 612   for (Standard_Integer i = 1; i <= subShapeAndAncestors.Extent(); i++) {
 613     const TopoDS_Shape& mayBeDangle = subShapeAndAncestors.FindKey(i);
 614     const TopTools_ListOfShape& ancestors = subShapeAndAncestors.FindFromIndex(i);
 615     if (ancestors.Extent() == 1) theDangles.Bind(ancestors.First(), mayBeDangle);
 616   }
 617   return theDangles.Extent();
 618 }
 619
 620 //=======================================================================
 621 void loadGeneratedDangleShapes(
 622   const TopoDS_Shape&      theShapeIn,
 623   const TopAbs_ShapeEnum   theGeneratedFrom,
 624   TNaming_Builder *        theBuilder)
 625 {
 626   TopTools_DataMapOfShapeShape dangles;
 627   if (!getDangleShapes(theShapeIn, theGeneratedFrom, dangles)) return;
 628   TopTools_DataMapIteratorOfDataMapOfShapeShape itr(dangles);
 629   for (; itr.More(); itr.Next())
 630     theBuilder->Generated(itr.Key(), itr.Value());
 631 }
 632
 633 //=======================================================================
 634 void Model_BodyBuilder::loadNextLevels(GeomShapePtr theShape,
 635                                        const std::string& theName)
 636 {
 637   if(theShape->isNull()) return;
 638   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 639   std::string aName;
 640   if (aShape.ShapeType() == TopAbs_SOLID) {
 641     TopExp_Explorer expl(aShape, TopAbs_FACE);
 642     for (; expl.More(); expl.Next()) {
 643       builder(myFreePrimitiveTag)->Generated(expl.Current());
 644       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 645       aName = theName + "_" + aStr.ToCString();
 646       buildName(myFreePrimitiveTag, aName);
 647       ++myFreePrimitiveTag;
 648     }
 649   }
 650   else if (aShape.ShapeType() == TopAbs_SHELL || aShape.ShapeType() == TopAbs_FACE) {
 651     // load faces and all the free edges
 652     TopTools_IndexedMapOfShape Faces;
 653     TopExp::MapShapes(aShape, TopAbs_FACE, Faces);
 654     if (Faces.Extent() > 1 || (aShape.ShapeType() == TopAbs_SHELL && Faces.Extent() == 1)) {
 655       TopExp_Explorer expl(aShape, TopAbs_FACE);
 656       for (; expl.More(); expl.Next()) {
 657         builder(myFreePrimitiveTag)->Generated(expl.Current());
 658         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 659         aName = theName + "_" + aStr.ToCString();
 660         buildName(myFreePrimitiveTag, aName);
 661         ++myFreePrimitiveTag;
 662       }
 663     }
 664     TopTools_IndexedDataMapOfShapeListOfShape anEdgeAndNeighbourFaces;
 665     TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, anEdgeAndNeighbourFaces);
 666     for (Standard_Integer i = 1; i <= anEdgeAndNeighbourFaces.Extent(); i++)
 667     {
 668       const TopTools_ListOfShape& aLL = anEdgeAndNeighbourFaces.FindFromIndex(i);
 669       if (aLL.Extent() < 2) {
 670         if (BRep_Tool::Degenerated(TopoDS::Edge(anEdgeAndNeighbourFaces.FindKey(i))))
 671           continue;
 672         builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 673         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 674         aName = theName + "_" + aStr.ToCString();
 675         buildName(myFreePrimitiveTag, aName);
 676         ++myFreePrimitiveTag;
 677       } else {
 678         TopTools_ListIteratorOfListOfShape anIter(aLL);
 679         const TopoDS_Face& aFace = TopoDS::Face(anIter.Value());
 680         anIter.Next();
 681         if(aFace.IsEqual(anIter.Value())) {
 682           builder(myFreePrimitiveTag)->Generated(anEdgeAndNeighbourFaces.FindKey(i));
 683           TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 684           aName = theName + "_" + aStr.ToCString();
 685           buildName(myFreePrimitiveTag, aName);
 686           ++myFreePrimitiveTag;
 687         }
 688       }
 689     }
 690   } else if (aShape.ShapeType() == TopAbs_WIRE) {
 691     TopTools_IndexedMapOfShape Edges;
 692     BRepTools::Map3DEdges(aShape, Edges);
 693     if (Edges.Extent() == 1) {
 694       builder(myFreePrimitiveTag++)->Generated(Edges.FindKey(1));
 695       TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 696       for (; expl.More(); expl.Next()) {
 697         builder(myFreePrimitiveTag)->Generated(expl.Current());
 698         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 699         aName = theName + "_" + aStr.ToCString();
 700         buildName(myFreePrimitiveTag, aName);
 701         ++myFreePrimitiveTag;
 702       }
 703     } else {
 704       TopExp_Explorer expl(aShape, TopAbs_EDGE);
 705       for (; expl.More(); expl.Next()) {
 706         builder(myFreePrimitiveTag)->Generated(expl.Current());
 707         TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 708         aName = theName + "_" + aStr.ToCString();
 709         buildName(myFreePrimitiveTag, aName);
 710         ++myFreePrimitiveTag;
 711       }
 712       // and load generated vertices.
 713       TopTools_DataMapOfShapeShape generated;
 714       if (getDangleShapes(aShape, TopAbs_EDGE, generated))
 715       {
 716         TNaming_Builder* pBuilder = builder(myFreePrimitiveTag++);
 717         loadGeneratedDangleShapes(aShape, TopAbs_EDGE, pBuilder);
 718       }
 719     }
 720   } else if (aShape.ShapeType() == TopAbs_EDGE) {
 721     TopExp_Explorer expl(aShape, TopAbs_VERTEX);
 722     for (; expl.More(); expl.Next()) {
 723       builder(myFreePrimitiveTag)->Generated(expl.Current());
 724       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 725       aName = theName + "_" + aStr.ToCString();
 726       buildName(myFreePrimitiveTag, aName);
 727       ++myFreePrimitiveTag;
 728     }
 729   }
 730 }
 731
 732 //=======================================================================
 733 int findAmbiguities(const TopoDS_Shape&           theShapeIn,
 734   TopTools_ListOfShape&   theList)
 735 {
 736   theList.Clear();
 737   // edges -> ancestor faces list
 738   TopTools_IndexedDataMapOfShapeListOfShape aSubShapeAndAncestors;
 739   TopExp::MapShapesAndAncestors(theShapeIn, TopAbs_EDGE, TopAbs_FACE, aSubShapeAndAncestors);
 740   // keeps the shapes which are already in the resulting list
 741   TopTools_MapOfShape alreadyThere;
 742   // map from faces identifier (combination of hash-codes) to list of edges produced such ID
 743   NCollection_DataMap<int, NCollection_List<TopoDS_Shape> > aFacesIDs;
 744
 745   TopTools_IndexedDataMapOfShapeListOfShape::Iterator anAncestorsIter(aSubShapeAndAncestors);
 746   for (; anAncestorsIter.More(); anAncestorsIter.Next()) {
 747     const TopTools_ListOfShape& ancestors = anAncestorsIter.Value();
 748     if (ancestors.Extent() < 2)
 749       continue;
 750     Standard_Integer anID = 0;
 751     for(TopTools_ListIteratorOfListOfShape aFaceIt(ancestors); aFaceIt.More(); aFaceIt.Next()) {
 752       anID ^= HashCode(aFaceIt.ChangeValue(), 1990657); // Pierpont prime
 753     }
 754     if (aFacesIDs.IsBound(anID)) { // there found same edge, check they really have same faces
 755       const NCollection_List<TopoDS_Shape>& aSameFaces1 =
 756         aSubShapeAndAncestors.FindFromKey(anAncestorsIter.Key());
 757       NCollection_List<TopoDS_Shape>::Iterator aSameEdge(aFacesIDs.ChangeFind(anID));
 758       for(; aSameEdge.More(); aSameEdge.Next()) {
 759         const NCollection_List<TopoDS_Shape>& aSameFaces2 =
 760           aSubShapeAndAncestors.FindFromKey(aSameEdge.Value());
 761         if (aSameFaces2.Extent() != aSameFaces1.Extent()) // the number of faces is different
 762           break;
 763
 764         NCollection_List<TopoDS_Shape>::Iterator aFaceIter1(aSameFaces1);
 765         for(; aFaceIter1.More(); aFaceIter1.Next()) {
 766           NCollection_List<TopoDS_Shape>::Iterator aFaceIter2(aSameFaces2);
 767           for(; aFaceIter2.More(); aFaceIter2.Next()) {
 768             if (aFaceIter1.Value().IsSame(aFaceIter2.Value()))
 769               break;
 770           }
 771           if (!aFaceIter2.More()) // aFaceIter1 contains a face, which is not in aFaceIter2
 772             break;
 773         }
 774         if (!aFaceIter1.More()) { // all the faces are same => put to the result
 775           if (alreadyThere.Add(aSameEdge.Value()))
 776             theList.Append(aSameEdge.Value());
 777           if (alreadyThere.Add(anAncestorsIter.Key()))
 778             theList.Append(anAncestorsIter.Key());
 779         }
 780       }
 781     } else { // ID is unique, just add this edge
 782       aFacesIDs.Bind(anID, NCollection_List<TopoDS_Shape>());
 783     }
 784     aFacesIDs.ChangeFind(anID).Append(anAncestorsIter.Key()); // add to the list anyway
 785   }
 786   return theList.Extent();
 787 }
 788
 789 //=======================================================================
 790 void Model_BodyBuilder::loadFirstLevel(GeomShapePtr theShape, const std::string& theName)
 791 {
 792   if(theShape->isNull()) return;
 793   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 794   std::string aName;
 795   if (aShape.ShapeType() == TopAbs_COMPOUND || aShape.ShapeType() == TopAbs_COMPSOLID) {
 796     TopoDS_Iterator itr(aShape);
 797     for (; itr.More(); itr.Next()) {
 798       builder(myFreePrimitiveTag)->Generated(itr.Value());
 799       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 800       aName = theName + "_" + aStr.ToCString();
 801       buildName(myFreePrimitiveTag, aName);
 802       ++myFreePrimitiveTag;
 803       if (itr.Value().ShapeType() == TopAbs_COMPOUND ||
 804         itr.Value().ShapeType() == TopAbs_COMPSOLID)
 805       {
 806         GeomShapePtr itrShape(new GeomAPI_Shape());
 807         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 808         loadFirstLevel(itrShape, theName);
 809       } else {
 810         GeomShapePtr itrShape(new GeomAPI_Shape());
 811         itrShape->setImpl(new TopoDS_Shape(itr.Value()));
 812         loadNextLevels(itrShape, theName);
 813       }
 814     }
 815   } else {
 816     GeomShapePtr itrShape(new GeomAPI_Shape());
 817     itrShape->setImpl(new TopoDS_Shape(aShape));
 818     loadNextLevels(itrShape, theName);
 819   }
 820   TopTools_ListOfShape   aList;
 821   if(findAmbiguities(aShape, aList)) {
 822     TopTools_ListIteratorOfListOfShape it(aList);
 823     for (; it.More(); it.Next(), ++myFreePrimitiveTag) {
 824       builder(myFreePrimitiveTag)->Generated(it.Value());
 825       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 826       aName = theName + "_" + aStr.ToCString();
 827       buildName(myFreePrimitiveTag, aName);
 828     }
 829   }
 830 }
 831
 832 //=======================================================================
 833 void Model_BodyBuilder::loadDisconnectedEdges(GeomShapePtr theShape, const std::string& theName)
 834 {
 835   if(theShape->isNull()) return;
 836   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 837   TopTools_DataMapOfShapeListOfShape edgeNaborFaces;
 838   TopTools_ListOfShape empty;
 839   TopExp_Explorer explF(aShape, TopAbs_FACE);
 840   for (; explF.More(); explF.Next()) {
 841     const TopoDS_Shape& aFace = explF.Current();
 842     TopExp_Explorer explV(aFace, TopAbs_EDGE);
 843     for (; explV.More(); explV.Next()) {
 844       const TopoDS_Shape& anEdge = explV.Current();
 845       if (!edgeNaborFaces.IsBound(anEdge)) edgeNaborFaces.Bind(anEdge, empty);
 846       Standard_Boolean faceIsNew = Standard_True;
 847       TopTools_ListIteratorOfListOfShape itrF(edgeNaborFaces.Find(anEdge));
 848       for (; itrF.More(); itrF.Next()) {
 849         if (itrF.Value().IsSame(aFace)) {
 850           faceIsNew = Standard_False;
 851           break;
 852         }
 853       }
 854       if (faceIsNew)
 855         edgeNaborFaces.ChangeFind(anEdge).Append(aFace);
 856     }
 857   }
 858
 859   TopTools_MapOfShape anEdgesToDelete;
 860   TopExp_Explorer anEx(aShape,TopAbs_EDGE);
 861   std::string aName;
 862   for(;anEx.More();anEx.Next()) {
 863     Standard_Boolean aC0 = Standard_False;
 864     TopoDS_Shape anEdge1 = anEx.Current();
 865     if (edgeNaborFaces.IsBound(anEdge1)) {
 866       const TopTools_ListOfShape& aList1 = edgeNaborFaces.Find(anEdge1);
 867       if (aList1.Extent()<2) continue;
 868       TopTools_DataMapIteratorOfDataMapOfShapeListOfShape itr(edgeNaborFaces);
 869       for (; itr.More(); itr.Next()) {
 870         TopoDS_Shape anEdge2 = itr.Key();
 871         if(anEdgesToDelete.Contains(anEdge2)) continue;
 872         if (anEdge1.IsSame(anEdge2)) continue;
 873         const TopTools_ListOfShape& aList2 = itr.Value();
 874         // compare lists of the neighbour faces of edge1 and edge2
 875         if (aList1.Extent() == aList2.Extent()) {
 876           Standard_Integer aMatches = 0;
 877           for(TopTools_ListIteratorOfListOfShape aLIter1(aList1);aLIter1.More();aLIter1.Next())
 878             for(TopTools_ListIteratorOfListOfShape aLIter2(aList2);aLIter2.More();aLIter2.Next())
 879               if (aLIter1.Value().IsSame(aLIter2.Value())) aMatches++;
 880           if (aMatches == aList1.Extent()) {
 881             aC0=Standard_True;
 882             builder(myFreePrimitiveTag)->Generated(anEdge2);
 883             anEdgesToDelete.Add(anEdge2);
 884             TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 885             aName = theName + "_" + aStr.ToCString();
 886             buildName(myFreePrimitiveTag, aName);
 887             ++myFreePrimitiveTag;
 888           }
 889         }
 890       }
 891       TopTools_MapIteratorOfMapOfShape itDelete(anEdgesToDelete);
 892       for(;itDelete.More();itDelete.Next())
 893         edgeNaborFaces.UnBind(itDelete.Key());
 894       edgeNaborFaces.UnBind(anEdge1);
 895     }
 896     if (aC0) {
 897       builder(myFreePrimitiveTag)->Generated(anEdge1);
 898       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 899       aName = theName + "_" + aStr.ToCString();
 900       buildName(myFreePrimitiveTag, aName);
 901       ++myFreePrimitiveTag;
 902     }
 903   }
 904 }
 905
 906 void Model_BodyBuilder::loadDisconnectedVertexes(GeomShapePtr theShape,
 907                                                  const std::string& theName)
 908 {
 909   if(theShape->isNull()) return;
 910   TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 911   TopTools_DataMapOfShapeListOfShape vertexNaborEdges;
 912   TopTools_ListOfShape empty;
 913   TopExp_Explorer explF(aShape, TopAbs_EDGE);
 914   for (; explF.More(); explF.Next()) {
 915     const TopoDS_Shape& anEdge = explF.Current();
 916     TopExp_Explorer explV(anEdge, TopAbs_VERTEX);
 917     for (; explV.More(); explV.Next()) {
 918       const TopoDS_Shape& aVertex = explV.Current();
 919       if (!vertexNaborEdges.IsBound(aVertex)) vertexNaborEdges.Bind(aVertex, empty);
 920       Standard_Boolean faceIsNew = Standard_True;
 921       TopTools_ListIteratorOfListOfShape itrF(vertexNaborEdges.Find(aVertex));
 922       for (; itrF.More(); itrF.Next()) {
 923         if (itrF.Value().IsSame(anEdge)) {
 924           faceIsNew = Standard_False;
 925           break;
 926         }
 927       }
 928       if (faceIsNew) {
 929         vertexNaborEdges.ChangeFind(aVertex).Append(anEdge);
 930       }
 931     }
 932   }
 933   std::string aName;
 934   TopTools_DataMapIteratorOfDataMapOfShapeListOfShape itr(vertexNaborEdges);
 935   for (; itr.More(); itr.Next()) {
 936     const TopTools_ListOfShape& naborEdges = itr.Value();
 937     if (naborEdges.Extent() < 2) {
 938       builder(myFreePrimitiveTag)->Generated(itr.Key());
 939       TCollection_AsciiString aStr(myFreePrimitiveTag - PRIMITIVES_START_TAG + 1);
 940       aName = theName + "_" + aStr.ToCString();
 941       buildName(myFreePrimitiveTag, aName);
 942       ++myFreePrimitiveTag;
 943     }
 944   }
 945 }
 946
 947 GeomShapePtr Model_BodyBuilder::shape()
 948 {
 949   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 950   if (aData && aData->isValid()) {
 951     TDF_Label aShapeLab = aData->shapeLab();
 952     Handle(TDF_Reference) aRef;
 953     if (aShapeLab.FindAttribute(TDF_Reference::GetID(), aRef)) {
 954       aShapeLab = aRef->Get();
 955     }
 956     Handle(TNaming_NamedShape) aName;
 957     if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
 958       TopoDS_Shape aShape = aName->Get();
 959       if (!aShape.IsNull()) {
 960         GeomShapePtr aRes(new GeomAPI_Shape);
 961         aRes->setImpl(new TopoDS_Shape(aShape));
 962         return aRes;
 963       }
 964     }
 965   }
 966   return GeomShapePtr();
 967 }
 968
 969 bool Model_BodyBuilder::isLatestEqual(const GeomShapePtr& theShape)
 970 {
 971   if (theShape.get()) {
 972     TopoDS_Shape aShape = theShape->impl<TopoDS_Shape>();
 973     std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(data());
 974     if (aData) {
 975       TDF_Label& aShapeLab = aData->shapeLab();
 976       Handle(TNaming_NamedShape) aName;
 977       if (aShapeLab.FindAttribute(TNaming_NamedShape::GetID(), aName)) {
 978         TopoDS_Shape aLatest = TNaming_Tool::CurrentShape(aName);
 979         if (aLatest.IsNull())
 980           return false;
 981         if (aLatest.IsEqual(aShape))
 982           return true;
 983         // check sub-shapes for comp-solids:
 984         for (TopExp_Explorer anExp(aShape, aLatest.ShapeType()); anExp.More(); anExp.Next()) {
 985           if (aLatest.IsEqual(anExp.Current()))
 986             return true;
 987         }
 988       }
 989     }
 990   }
 991   return false;
 992 }