src/GeomAPI/GeomAPI_Shape.cpp

   1 // Copyright (C) 2014-2019  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "GeomAPI_Shape.h"
  21
  22 #include <GeomAPI_Pnt.h>
  23 #include <GeomAPI_Vertex.h>
  24 #include <GeomAPI_Edge.h>
  25 #include <GeomAPI_Wire.h>
  26 #include <GeomAPI_Face.h>
  27 #include <GeomAPI_Shell.h>
  28 #include <GeomAPI_Solid.h>
  29
  30 #include <BRep_Tool.hxx>
  31 #include <BRepAlgoAPI_Section.hxx>
  32 #include <BRepBndLib.hxx>
  33 #include <BRepBuilderAPI_FindPlane.hxx>
  34 #include <BRepExtrema_DistShapeShape.hxx>
  35 #include <BRepTools.hxx>
  36 #include <Bnd_Box.hxx>
  37 #include <Geom_Circle.hxx>
  38 #include <Geom_Conic.hxx>
  39 #include <Geom_Curve.hxx>
  40 #include <Geom_Ellipse.hxx>
  41 #include <Geom_Hyperbola.hxx>
  42 #include <Geom_Line.hxx>
  43 #include <Geom_Parabola.hxx>
  44 #include <Geom_Plane.hxx>
  45 #include <Geom_RectangularTrimmedSurface.hxx>
  46 #include <Geom_TrimmedCurve.hxx>
  47 #include <TopExp_Explorer.hxx>
  48 #include <TopoDS.hxx>
  49 #include <TopoDS_Iterator.hxx>
  50 #include <TopoDS_Shape.hxx>
  51 #include <NCollection_List.hxx>
  52
  53 #include <BOPAlgo_CheckerSI.hxx>
  54 #include <BOPDS_DS.hxx>
  55
  56 #include <sstream>
  57 #include <algorithm> // for std::transform
  58
  59 #include <BRepTools.hxx>
  60
  61 #define MY_SHAPE implPtr<TopoDS_Shape>()
  62
  63 GeomAPI_Shape::GeomAPI_Shape()
  64     : GeomAPI_Interface(new TopoDS_Shape())
  65 {
  66 }
  67
  68 std::shared_ptr<GeomAPI_Shape> GeomAPI_Shape::emptyCopied() const
  69 {
  70   GeomShapePtr aShape(new GeomAPI_Shape());
  71   aShape->setImpl(new TopoDS_Shape(MY_SHAPE->EmptyCopied()));
  72   return aShape;
  73 }
  74
  75 bool GeomAPI_Shape::isNull() const
  76 {
  77   return MY_SHAPE->IsNull() == Standard_True;
  78 }
  79
  80 bool GeomAPI_Shape::isEqual(const std::shared_ptr<GeomAPI_Shape> theShape) const
  81 {
  82   if (!theShape.get())
  83     return false;
  84   if (isNull())
  85     return theShape->isNull();
  86   if (theShape->isNull())
  87     return false;
  88
  89   return MY_SHAPE->IsEqual(theShape->impl<TopoDS_Shape>()) == Standard_True;
  90 }
  91
  92 bool GeomAPI_Shape::isSame(const std::shared_ptr<GeomAPI_Shape> theShape) const
  93 {
  94   if (!theShape.get())
  95     return false;
  96   if (isNull())
  97     return theShape->isNull();
  98   if (theShape->isNull())
  99     return false;
 100
 101   return MY_SHAPE->IsSame(theShape->impl<TopoDS_Shape>()) == Standard_True;
 102 }
 103
 104 bool GeomAPI_Shape::isVertex() const
 105 {
 106   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 107   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX;
 108 }
 109
 110 bool GeomAPI_Shape::isEdge() const
 111 {
 112   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 113   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_EDGE;
 114 }
 115
 116 bool GeomAPI_Shape::isWire() const
 117 {
 118   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 119   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_WIRE;
 120 }
 121
 122 bool GeomAPI_Shape::isFace() const
 123 {
 124   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 125   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_FACE;
 126 }
 127
 128 bool GeomAPI_Shape::isShell() const
 129 {
 130   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 131   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_SHELL;
 132 }
 133
 134 bool GeomAPI_Shape::isCompound() const
 135 {
 136   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 137   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_COMPOUND;
 138 }
 139
 140 bool GeomAPI_Shape::isCompoundOfSolids() const
 141 {
 142   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 143   if (aShape.IsNull() || aShape.ShapeType() != TopAbs_COMPOUND)
 144     return false;
 145   bool isAtLeastOne = false;
 146   for(TopoDS_Iterator aSubs(aShape); aSubs.More(); aSubs.Next()) {
 147     if (aSubs.Value().IsNull() || aSubs.Value().ShapeType() != TopAbs_SOLID)
 148       return false;
 149     isAtLeastOne = true;
 150   }
 151   return isAtLeastOne;
 152 }
 153
 154 // LCOV_EXCL_START
 155 GeomAPI_Shape::ShapeType GeomAPI_Shape::typeOfCompoundShapes() const
 156 {
 157   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 158   if (aShape.IsNull() || aShape.ShapeType() != TopAbs_COMPOUND)
 159     return SHAPE;
 160   int aType = -1;
 161   for(TopoDS_Iterator aSubs(aShape); aSubs.More(); aSubs.Next()) {
 162     if (!aSubs.Value().IsNull()) {
 163       if (aType == -1)
 164         aType = aSubs.Value().ShapeType();
 165       else if (aSubs.Value().ShapeType() != aType)
 166         return SHAPE;
 167     }
 168   }
 169   return (GeomAPI_Shape::ShapeType) aType;
 170 }
 171 // LCOV_EXCL_STOP
 172
 173 // adds the nopt-compound elements recursively to the list
 174 static void addSimpleToList(const TopoDS_Shape& theShape, NCollection_List<TopoDS_Shape>& theList)
 175 {
 176   if (!theShape.IsNull()) {
 177     if (theShape.ShapeType() == TopAbs_COMPOUND) {
 178       for(TopoDS_Iterator aSubs(theShape); aSubs.More(); aSubs.Next()) {
 179         addSimpleToList(aSubs.Value(), theList);
 180       }
 181     } else {
 182       theList.Append(theShape);
 183     }
 184   }
 185 }
 186
 187 bool GeomAPI_Shape::isConnectedTopology() const
 188 {
 189   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 190   if (aShape.IsNull() || aShape.ShapeType() != TopAbs_COMPOUND)
 191     return false;
 192   // list of simple elements that are not detected in connection to others
 193   NCollection_List<TopoDS_Shape> aNotConnected;
 194   addSimpleToList(aShape, aNotConnected);
 195   if (aNotConnected.IsEmpty()) // an empty compound
 196     return false;
 197
 198   // collect here the group of connected subs, starting with one first element
 199   NCollection_List<TopoDS_Shape> aNewConnected;
 200   aNewConnected.Append(aNotConnected.First());
 201   aNotConnected.RemoveFirst();
 202   // iterate until some new element become connected
 203   while(!aNewConnected.IsEmpty() && !aNotConnected.IsEmpty()) {
 204     NCollection_List<TopoDS_Shape> aNew; // very new connected to new connected
 205     NCollection_List<TopoDS_Shape>::Iterator aNotIter(aNotConnected);
 206     while(aNotIter.More()) {
 207       // optimization to avoid TopExp_Explorer double-cycle, collect all vertices in the list first
 208       NCollection_List<TopoDS_Shape> aNotVertices;
 209       for(TopExp_Explorer anExp1(aNotIter.Value(), TopAbs_VERTEX); anExp1.More(); anExp1.Next()) {
 210         aNotVertices.Append(anExp1.Current());
 211       }
 212
 213       bool aConnected =  false;
 214       NCollection_List<TopoDS_Shape>::Iterator aNewIter(aNewConnected);
 215       for(; !aConnected && aNewIter.More(); aNewIter.Next()) {
 216         // checking topological connecion of aNotIter and aNewIter
 217         // (if shapes are connected, vertices are connected for sure)
 218         TopExp_Explorer anExp2(aNewIter.Value(), TopAbs_VERTEX);
 219         for(; !aConnected && anExp2.More(); anExp2.Next()) {
 220           NCollection_List<TopoDS_Shape>::Iterator aNotIter(aNotVertices);
 221           for(; aNotIter.More(); aNotIter.Next()) {
 222             if (aNotIter.Value().IsSame(anExp2.Current())) {
 223               aConnected = true;
 224               break;
 225             }
 226           }
 227         }
 228       }
 229       if (aConnected) {
 230         aNew.Append(aNotIter.Value());
 231         aNotConnected.Remove(aNotIter);
 232       } else {
 233         aNotIter.Next();
 234       }
 235     }
 236     // remove all new connected and put to this list very new connected
 237     aNewConnected.Clear();
 238     aNewConnected.Append(aNew);
 239   }
 240   return aNotConnected.IsEmpty() == Standard_True;
 241 }
 242
 243 bool GeomAPI_Shape::isSolid() const
 244 {
 245   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 246   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_SOLID;
 247 }
 248
 249 bool GeomAPI_Shape::isCompSolid() const
 250 {
 251   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 252   return !aShape.IsNull() && aShape.ShapeType() == TopAbs_COMPSOLID;
 253 }
 254
 255 bool GeomAPI_Shape::isPlanar() const
 256 {
 257   TopoDS_Shape aShape = impl<TopoDS_Shape>();
 258
 259   if(aShape.IsNull()) {
 260     return false;
 261   }
 262
 263   TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
 264   if(aShapeType == TopAbs_COMPOUND) {
 265     TopoDS_Iterator anIt(aShape);
 266     int aShNum = 0;
 267     for(; anIt.More(); anIt.Next()) {
 268       ++aShNum;
 269     }
 270     if(aShNum == 1) {
 271       anIt.Initialize(aShape);
 272       aShape = anIt.Value();
 273     }
 274   }
 275
 276   aShapeType = aShape.ShapeType();
 277   if(aShapeType == TopAbs_VERTEX) {
 278     return true;
 279   } else if(aShapeType == TopAbs_FACE) {
 280     const Handle(Geom_Surface)& aSurface = BRep_Tool::Surface(TopoDS::Face(aShape));
 281     Handle(Standard_Type) aType = aSurface->DynamicType();
 282
 283     if(aType == STANDARD_TYPE(Geom_RectangularTrimmedSurface)) {
 284       Handle(Geom_RectangularTrimmedSurface) aTrimSurface =
 285         Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurface);
 286       aType = aTrimSurface->BasisSurface()->DynamicType();
 287     }
 288     return (aType == STANDARD_TYPE(Geom_Plane)) == Standard_True;
 289   } else {
 290     BRepBuilderAPI_FindPlane aFindPlane(aShape);
 291     bool isFound = aFindPlane.Found() == Standard_True;
 292
 293     if(!isFound && aShapeType == TopAbs_EDGE) {
 294       Standard_Real aFirst, aLast;
 295       Handle(Geom_Curve) aCurve = BRep_Tool::Curve(TopoDS::Edge(aShape), aFirst, aLast);
 296       Handle(Standard_Type) aType = aCurve->DynamicType();
 297
 298       if(aType == STANDARD_TYPE(Geom_TrimmedCurve)) {
 299         Handle(Geom_TrimmedCurve) aTrimCurve = Handle(Geom_TrimmedCurve)::DownCast(aCurve);
 300         aType = aTrimCurve->BasisCurve()->DynamicType();
 301       }
 302
 303       if(aType == STANDARD_TYPE(Geom_Line)
 304           || aType == STANDARD_TYPE(Geom_Conic)
 305           || aType == STANDARD_TYPE(Geom_Circle)
 306           || aType == STANDARD_TYPE(Geom_Ellipse)
 307           || aType == STANDARD_TYPE(Geom_Hyperbola)
 308           || aType == STANDARD_TYPE(Geom_Parabola)) {
 309         isFound = true;
 310       }
 311     }
 312
 313     return isFound;
 314   }
 315
 316   return false;
 317 }
 318
 319 std::shared_ptr<GeomAPI_Vertex> GeomAPI_Shape::vertex() const
 320 {
 321   GeomVertexPtr aVertex;
 322   if (isVertex()) {
 323     const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 324     aVertex = GeomVertexPtr(new GeomAPI_Vertex);
 325     aVertex->setImpl(new TopoDS_Shape(aShape));
 326   }
 327   return aVertex;
 328 }
 329
 330 std::shared_ptr<GeomAPI_Edge> GeomAPI_Shape::edge() const
 331 {
 332   GeomEdgePtr anEdge;
 333   if (isEdge()) {
 334     const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 335     anEdge = GeomEdgePtr(new GeomAPI_Edge);
 336     anEdge->setImpl(new TopoDS_Shape(aShape));
 337   }
 338   return anEdge;
 339 }
 340
 341 std::shared_ptr<GeomAPI_Wire> GeomAPI_Shape::wire() const
 342 {
 343   GeomWirePtr aWire;
 344   if (isWire()) {
 345     const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 346     aWire = GeomWirePtr(new GeomAPI_Wire);
 347     aWire->setImpl(new TopoDS_Shape(aShape));
 348   }
 349   return aWire;
 350 }
 351
 352 std::shared_ptr<GeomAPI_Face> GeomAPI_Shape::face() const
 353 {
 354   GeomFacePtr aFace;
 355   if (isFace()) {
 356     const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 357     aFace = GeomFacePtr(new GeomAPI_Face);
 358     aFace->setImpl(new TopoDS_Shape(aShape));
 359   }
 360   return aFace;
 361 }
 362
 363 std::shared_ptr<GeomAPI_Shell> GeomAPI_Shape::shell() const
 364 {
 365   GeomShellPtr aShell;
 366   if (isShell()) {
 367     const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 368     aShell = GeomShellPtr(new GeomAPI_Shell);
 369     aShell->setImpl(new TopoDS_Shape(aShape));
 370   }
 371   return aShell;
 372 }
 373
 374 std::shared_ptr<GeomAPI_Solid> GeomAPI_Shape::solid() const
 375 {
 376   GeomSolidPtr aSolid;
 377   if (isSolid()) {
 378     const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 379     aSolid = GeomSolidPtr(new GeomAPI_Solid);
 380     aSolid->setImpl(new TopoDS_Shape(aShape));
 381   }
 382   return aSolid;
 383 }
 384
 385 std::list<std::shared_ptr<GeomAPI_Shape> >
 386 GeomAPI_Shape::subShapes(ShapeType theSubShapeType) const
 387 {
 388   ListOfShape aSubs;
 389   const TopoDS_Shape& aShape = impl<TopoDS_Shape>();
 390   if (aShape.IsNull())
 391     return aSubs;
 392
 393   for (TopExp_Explorer anExp(aShape, (TopAbs_ShapeEnum)theSubShapeType);
 394        anExp.More(); anExp.Next()) {
 395     GeomShapePtr aSub(new GeomAPI_Shape);
 396     aSub->setImpl(new TopoDS_Shape(anExp.Current()));
 397     aSubs.push_back(aSub);
 398   }
 399   return aSubs;
 400 }
 401
 402 GeomAPI_Shape::ShapeType GeomAPI_Shape::shapeType() const
 403 {
 404   const TopoDS_Shape& aShape = impl<TopoDS_Shape>();
 405   if (aShape.IsNull())
 406     return GeomAPI_Shape::SHAPE;
 407
 408   ShapeType aST = GeomAPI_Shape::SHAPE;
 409
 410   switch(aShape.ShapeType()) {
 411   case TopAbs_COMPOUND:
 412     aST = GeomAPI_Shape::COMPOUND;
 413     break;
 414   case TopAbs_COMPSOLID:
 415     aST = GeomAPI_Shape::COMPSOLID;
 416     break;
 417   case TopAbs_SOLID:
 418     aST = GeomAPI_Shape::SOLID;
 419     break;
 420   case TopAbs_SHELL:
 421     aST = GeomAPI_Shape::SHELL;
 422     break;
 423   case TopAbs_FACE:
 424     aST = GeomAPI_Shape::FACE;
 425     break;
 426   case TopAbs_WIRE:
 427     aST = GeomAPI_Shape::WIRE;
 428     break;
 429   case TopAbs_EDGE:
 430     aST = GeomAPI_Shape::EDGE;
 431     break;
 432   case TopAbs_VERTEX:
 433     aST = GeomAPI_Shape::VERTEX;
 434     break;
 435   case TopAbs_SHAPE:
 436     aST = GeomAPI_Shape::SHAPE;
 437     break;
 438   }
 439
 440   return aST;
 441 }
 442
 443 GeomAPI_Shape::ShapeType GeomAPI_Shape::shapeTypeByStr(std::string theType)
 444 {
 445   std::transform(theType.begin(), theType.end(), theType.begin(), ::toupper);
 446   if (theType == "COMPOUND")
 447     return COMPOUND;
 448   if (theType == "COMPSOLID")
 449     return COMPSOLID;
 450   if (theType == "SOLID")
 451     return SOLID;
 452   if (theType == "SHELL")
 453     return SHELL;
 454   if (theType == "FACE")
 455     return FACE;
 456   if (theType == "WIRE")
 457     return WIRE;
 458   if (theType == "EDGE")
 459     return EDGE;
 460   if (theType == "VERTEX")
 461     return VERTEX;
 462   return SHAPE; // default
 463 }
 464
 465 std::string GeomAPI_Shape::shapeTypeStr() const
 466 {
 467   ShapeType aShapeType = shapeType();
 468   std::string aShapeTypeStr;
 469
 470   switch(aShapeType) {
 471     case COMPOUND: {
 472       aShapeTypeStr = "COMPOUND";
 473       break;
 474     }
 475     case COMPSOLID: {
 476       aShapeTypeStr = "COMPSOLID";
 477       break;
 478     }
 479     case SOLID: {
 480       aShapeTypeStr = "SOLID";
 481       break;
 482     }
 483     case SHELL: {
 484       aShapeTypeStr = "SHELL";
 485       break;
 486     }
 487     case FACE: {
 488       aShapeTypeStr = "FACE";
 489       break;
 490     }
 491     case WIRE: {
 492       aShapeTypeStr = "WIRE";
 493       break;
 494     }
 495     case EDGE: {
 496       aShapeTypeStr = "EDGE";
 497       break;
 498     }
 499     case VERTEX: {
 500       aShapeTypeStr = "VERTEX";
 501       break;
 502     }
 503     case SHAPE: {
 504       aShapeTypeStr = "SHAPE";
 505       break;
 506     }
 507   }
 508
 509   return aShapeTypeStr;
 510 }
 511
 512 GeomAPI_Shape::Orientation GeomAPI_Shape::orientation() const
 513 {
 514   TopAbs_Orientation anOrientation = MY_SHAPE->Orientation();
 515
 516   switch(anOrientation) {
 517     case TopAbs_FORWARD:  return FORWARD;
 518     case TopAbs_REVERSED: return REVERSED;
 519     case TopAbs_INTERNAL: return INTERNAL;
 520     case TopAbs_EXTERNAL: return EXTERNAL;
 521     default:              return FORWARD;
 522   }
 523 }
 524
 525 void GeomAPI_Shape::setOrientation(const GeomAPI_Shape::Orientation theOrientation)
 526 {
 527   TopAbs_Orientation anOrientation = MY_SHAPE->Orientation();
 528
 529   switch(theOrientation) {
 530     case FORWARD:  MY_SHAPE->Orientation(TopAbs_FORWARD);  break;
 531     case REVERSED: MY_SHAPE->Orientation(TopAbs_REVERSED); break;
 532     case INTERNAL: MY_SHAPE->Orientation(TopAbs_INTERNAL); break;
 533     case EXTERNAL: MY_SHAPE->Orientation(TopAbs_EXTERNAL); break;
 534   }
 535 }
 536
 537 void GeomAPI_Shape::reverse()
 538 {
 539   MY_SHAPE->Reverse();
 540 }
 541
 542 bool GeomAPI_Shape::isSubShape(const std::shared_ptr<GeomAPI_Shape> theShape,
 543                                const bool theCheckOrientation) const
 544 {
 545   if(!theShape.get()) {
 546     return false;
 547   }
 548
 549   const TopoDS_Shape& aShapeToSearch = theShape->impl<TopoDS_Shape>();
 550   if(aShapeToSearch.IsNull()) {
 551     return false;
 552   }
 553
 554   for(TopExp_Explorer anExp(*MY_SHAPE, aShapeToSearch.ShapeType()); anExp.More(); anExp.Next()) {
 555     if(theCheckOrientation ?
 556        aShapeToSearch.IsEqual(anExp.Current()) : aShapeToSearch.IsSame(anExp.Current())) {
 557       return true;
 558     }
 559   }
 560
 561   return false;
 562 }
 563
 564 bool GeomAPI_Shape::computeSize(double& theXmin, double& theYmin, double& theZmin,
 565                                 double& theXmax, double& theYmax, double& theZmax) const
 566 {
 567   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 568   if (aShape.IsNull())
 569     return false;
 570   Bnd_Box aBndBox;
 571   BRepBndLib::Add(aShape, aBndBox, false);
 572   if (aBndBox.IsVoid())
 573     return false;
 574   aBndBox.Get(theXmin, theYmin, theZmin, theXmax, theYmax, theZmax);
 575   return true;
 576 }
 577
 578 GeomPointPtr GeomAPI_Shape::middlePoint() const
 579 {
 580   GeomPointPtr aMiddlePoint;
 581
 582   switch (shapeType()) {
 583   case VERTEX:
 584     aMiddlePoint = vertex()->point();
 585     break;
 586   case EDGE:
 587     aMiddlePoint = edge()->middlePoint();
 588     break;
 589   case WIRE:
 590     aMiddlePoint = wire()->middlePoint();
 591     break;
 592   case FACE:
 593     aMiddlePoint = face()->middlePoint();
 594     break;
 595   case SHELL:
 596     aMiddlePoint = shell()->middlePoint();
 597     break;
 598   case SOLID:
 599     aMiddlePoint = solid()->middlePoint();
 600     break;
 601   default: {
 602       // get middle point as center of the bounding box
 603       double aMinX, aMinY, aMinZ, aMaxX, aMaxY, aMaxZ;
 604       computeSize(aMinX, aMinY, aMinZ, aMaxX, aMaxY, aMaxZ);
 605       aMiddlePoint = GeomPointPtr(new GeomAPI_Pnt(
 606           (aMinX + aMaxX) * 0.5, (aMinY + aMaxY) * 0.5, (aMinZ + aMaxZ) * 0.5));
 607     }
 608   }
 609
 610   return aMiddlePoint;
 611 }
 612
 613 // LCOV_EXCL_START
 614 std::string GeomAPI_Shape::getShapeStream() const
 615 {
 616   std::ostringstream aStream;
 617   const TopoDS_Shape& aShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 618   BRepTools::Write(aShape, aStream);
 619   return aStream.str();
 620 }
 621 // LCOV_EXCL_STOP
 622
 623 GeomShapePtr GeomAPI_Shape::intersect(const GeomShapePtr theShape) const
 624 {
 625   const TopoDS_Shape& aShape1 = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 626   const TopoDS_Shape& aShape2 = theShape->impl<TopoDS_Shape>();
 627
 628   BRepAlgoAPI_Section aCommon(aShape1, aShape2);
 629   if (!aCommon.IsDone())
 630     return GeomShapePtr();
 631
 632   TopoDS_Shape aResult = aCommon.Shape();
 633   if (aResult.ShapeType() == TopAbs_COMPOUND) {
 634     NCollection_List<TopoDS_Shape> aSubs;
 635     addSimpleToList(aResult, aSubs);
 636     if(aSubs.Size() == 1) {
 637       aResult = aSubs.First();
 638     } else if(aSubs.Size() == 0) {
 639       return GeomShapePtr();
 640     }
 641   }
 642
 643   GeomShapePtr aResShape(new GeomAPI_Shape);
 644   aResShape->setImpl(new TopoDS_Shape(aResult));
 645   return aResShape;
 646 }
 647
 648 bool GeomAPI_Shape::isIntersect(const GeomShapePtr theShape) const
 649 {
 650   if(!theShape.get()) {
 651     return false;
 652   }
 653
 654   const TopoDS_Shape& aShape1 = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 655   const TopoDS_Shape& aShape2 = theShape->impl<TopoDS_Shape>();
 656
 657   BRepExtrema_DistShapeShape aDist(aShape1, aShape2);
 658   aDist.Perform();
 659   if(aDist.IsDone() && aDist.Value() < Precision::Confusion()) {
 660     return true;
 661   }
 662
 663   return false;
 664 }
 665
 666 void GeomAPI_Shape::translate(const std::shared_ptr<GeomAPI_Dir> theDir, const double theOffset)
 667 {
 668   gp_Dir aDir = theDir->impl<gp_Dir>();
 669   gp_Vec aTrsfVec(aDir.XYZ() * theOffset);
 670   gp_Trsf aTranslation;
 671   aTranslation.SetTranslation(aTrsfVec);
 672   TopoDS_Shape aResult = MY_SHAPE->Moved(aTranslation);
 673   setImpl(new TopoDS_Shape(aResult));
 674 }
 675
 676 bool GeomAPI_Shape::isSelfIntersected(const int theLevelOfCheck) const
 677 {
 678   BOPAlgo_CheckerSI aCSI;  // checker of self-interferences
 679   aCSI.SetLevelOfCheck(theLevelOfCheck);
 680   TopTools_ListOfShape aList;
 681   const TopoDS_Shape& aThisShape = const_cast<GeomAPI_Shape*>(this)->impl<TopoDS_Shape>();
 682   aList.Append(aThisShape);
 683   aCSI.SetArguments(aList);
 684   aCSI.Perform();
 685   if (aCSI.HasErrors() || aCSI.DS().Interferences().Extent() > 0) {
 686     return true;
 687   }
 688
 689   return false;
 690 }