src/GeomAlgoAPI/GeomAlgoAPI_ShapeTools.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        GeomAlgoAPI_ShapeTools.h
   4 // Created:     3 August 2015
   5 // Author:      Dmitry Bobylev
   6
   7 #include "GeomAlgoAPI_ShapeTools.h"
   8
   9 #include "GeomAlgoAPI_SketchBuilder.h"
  10
  11 #include <GeomAPI_Edge.h>
  12 #include <GeomAPI_Dir.h>
  13 #include <GeomAPI_Face.h>
  14 #include <GeomAPI_Pln.h>
  15 #include <GeomAPI_Pnt.h>
  16
  17 #include <Bnd_Box.hxx>
  18 #include <BOPTools.hxx>
  19 #include <BRep_Builder.hxx>
  20 #include <BRepAdaptor_Curve.hxx>
  21 #include <BRepAlgo_FaceRestrictor.hxx>
  22 #include <BRepBndLib.hxx>
  23 #include <BRepBuilderAPI_FindPlane.hxx>
  24 #include <BRepBuilderAPI_MakeEdge.hxx>
  25 #include <BRepBuilderAPI_MakeFace.hxx>
  26 #include <BRepCheck_Analyzer.hxx>
  27 #include <BRepExtrema_DistShapeShape.hxx>
  28 #include <BRepExtrema_ExtCF.hxx>
  29 #include <BRepGProp.hxx>
  30 #include <BRepTools.hxx>
  31 #include <BRepTopAdaptor_FClass2d.hxx>
  32 #include <Geom2d_Curve.hxx>
  33 #include <Handle_Geom2d_Curve.hxx>
  34 #include <BRepLib_CheckCurveOnSurface.hxx>
  35 #include <BRep_Tool.hxx>
  36 #include <Geom_Plane.hxx>
  37 #include <GeomLib_IsPlanarSurface.hxx>
  38 #include <GeomLib_Tool.hxx>
  39 #include <gp_Pln.hxx>
  40 #include <GProp_GProps.hxx>
  41 #include <IntAna_IntConicQuad.hxx>
  42 #include <IntAna_Quadric.hxx>
  43 #include <NCollection_Vector.hxx>
  44 #include <ShapeAnalysis.hxx>
  45 #include <ShapeAnalysis_Surface.hxx>
  46 #include <TopoDS_Builder.hxx>
  47 #include <TopoDS_Edge.hxx>
  48 #include <TopoDS_Face.hxx>
  49 #include <TopoDS_Shape.hxx>
  50 #include <TopoDS_Shell.hxx>
  51 #include <TopoDS_Vertex.hxx>
  52 #include <TopoDS.hxx>
  53 #include <TopExp_Explorer.hxx>
  54 #include <TopTools_ListIteratorOfListOfShape.hxx>
  55
  56 #include <BOPAlgo_Builder.hxx>
  57 #include <BRepBuilderAPI_MakeVertex.hxx>
  58 #include <TopoDS_Edge.hxx>
  59
  60 //==================================================================================================
  61 double GeomAlgoAPI_ShapeTools::volume(const std::shared_ptr<GeomAPI_Shape> theShape)
  62 {
  63   GProp_GProps aGProps;
  64   if(!theShape.get()) {
  65     return 0.0;
  66   }
  67   const TopoDS_Shape& aShape = theShape->impl<TopoDS_Shape>();
  68   if(aShape.IsNull()) {
  69     return 0.0;
  70   }
  71   const Standard_Real anEps = 1.e-6;
  72   BRepGProp::VolumeProperties(aShape, aGProps, anEps);
  73   return aGProps.Mass();
  74 }
  75
  76 //==================================================================================================
  77 std::shared_ptr<GeomAPI_Pnt> GeomAlgoAPI_ShapeTools::centreOfMass(const std::shared_ptr<GeomAPI_Shape> theShape)
  78 {
  79   GProp_GProps aGProps;
  80   if(!theShape) {
  81     return std::shared_ptr<GeomAPI_Pnt>();
  82   }
  83   const TopoDS_Shape& aShape = theShape->impl<TopoDS_Shape>();
  84   if(aShape.IsNull()) {
  85     return std::shared_ptr<GeomAPI_Pnt>();
  86   }
  87   gp_Pnt aCentre;
  88   if(aShape.ShapeType() == TopAbs_VERTEX) {
  89     aCentre = BRep_Tool::Pnt(TopoDS::Vertex(aShape));
  90   } else if(aShape.ShapeType() == TopAbs_EDGE || aShape.ShapeType() == TopAbs_WIRE) {
  91     BRepGProp::LinearProperties(aShape, aGProps);
  92     aCentre = aGProps.CentreOfMass();
  93   } else {
  94     BRepGProp::SurfaceProperties(aShape, aGProps);
  95     aCentre = aGProps.CentreOfMass();
  96   }
  97   return std::shared_ptr<GeomAPI_Pnt>(new GeomAPI_Pnt(aCentre.X(), aCentre.Y(), aCentre.Z()));
  98 }
  99
 100 //==================================================================================================
 101 std::shared_ptr<GeomAPI_Shape> GeomAlgoAPI_ShapeTools::combineShapes(const std::shared_ptr<GeomAPI_Shape> theCompound,
 102                                                                      const GeomAPI_Shape::ShapeType theType,
 103                                                                      ListOfShape& theCombinedShapes,
 104                                                                      ListOfShape& theFreeShapes)
 105 {
 106   GeomShapePtr aResult = theCompound;
 107
 108   if(!theCompound.get()) {
 109     return aResult;
 110   }
 111
 112   if(theType != GeomAPI_Shape::SHELL && theType != GeomAPI_Shape::COMPSOLID) {
 113     return aResult;
 114   }
 115
 116   TopAbs_ShapeEnum aTS = TopAbs_EDGE;
 117   TopAbs_ShapeEnum aTA = TopAbs_FACE;
 118   if(theType == GeomAPI_Shape::COMPSOLID) {
 119     aTS = TopAbs_FACE;
 120     aTA = TopAbs_SOLID;
 121   }
 122
 123   theCombinedShapes.clear();
 124   theFreeShapes.clear();
 125
 126   // Get free shapes.
 127   const TopoDS_Shape& aShapesComp = theCompound->impl<TopoDS_Shape>();
 128   for(TopoDS_Iterator anIter(aShapesComp); anIter.More(); anIter.Next() ) {
 129     const TopoDS_Shape& aShape = anIter.Value();
 130     if(aShape.ShapeType() > aTA) {
 131       std::shared_ptr<GeomAPI_Shape> aGeomShape(new GeomAPI_Shape);
 132       aGeomShape->setImpl<TopoDS_Shape>(new TopoDS_Shape(aShape));
 133       theFreeShapes.push_back(aGeomShape);
 134     }
 135   }
 136
 137   // Map subshapes and shapes.
 138   BOPCol_IndexedDataMapOfShapeListOfShape aMapSA;
 139   BOPTools::MapShapesAndAncestors(aShapesComp, aTS, aTA, aMapSA);
 140   if(aMapSA.IsEmpty()) {
 141     return aResult;
 142   }
 143
 144   // Get all shapes with common subshapes and free shapes.
 145   NCollection_Map<TopoDS_Shape> aFreeShapes;
 146   NCollection_Vector<NCollection_Map<TopoDS_Shape>> aShapesWithCommonSubshapes;
 147   for(BOPCol_IndexedDataMapOfShapeListOfShape::Iterator anIter(aMapSA); anIter.More(); anIter.Next()) {
 148     const TopoDS_Shape& aShape = anIter.Key();
 149     BOPCol_ListOfShape& aListOfShape = anIter.ChangeValue();
 150     if(aListOfShape.IsEmpty()) {
 151       continue;
 152     }
 153     else if(aListOfShape.Size() == 1) {
 154       const TopoDS_Shape& aF = aListOfShape.First();
 155       aFreeShapes.Add(aF);
 156       aListOfShape.Clear();
 157     } else {
 158       NCollection_List<TopoDS_Shape> aTempList;
 159       NCollection_Map<TopoDS_Shape> aTempMap;
 160       const TopoDS_Shape& aF = aListOfShape.First();
 161       const TopoDS_Shape& aL = aListOfShape.Last();
 162       aTempList.Append(aF);
 163       aTempList.Append(aL);
 164       aTempMap.Add(aF);
 165       aTempMap.Add(aL);
 166       aFreeShapes.Remove(aF);
 167       aFreeShapes.Remove(aL);
 168       aListOfShape.Clear();
 169       for(NCollection_List<TopoDS_Shape>::Iterator aTempIter(aTempList); aTempIter.More(); aTempIter.Next()) {
 170         const TopoDS_Shape& aTempShape = aTempIter.Value();
 171         for(BOPCol_IndexedDataMapOfShapeListOfShape::Iterator anIter(aMapSA); anIter.More(); anIter.Next()) {
 172           BOPCol_ListOfShape& aTempListOfShape = anIter.ChangeValue();
 173           if(aTempListOfShape.IsEmpty()) {
 174             continue;
 175           } else if(aTempListOfShape.Size() == 1 && aTempListOfShape.First() == aTempShape) {
 176             aTempListOfShape.Clear();
 177           } else if(aTempListOfShape.Size() > 1) {
 178             if(aTempListOfShape.First() == aTempShape) {
 179               const TopoDS_Shape& aTL = aTempListOfShape.Last();
 180               if(aTempMap.Add(aTL)) {
 181                 aTempList.Append(aTL);
 182                 aFreeShapes.Remove(aTL);
 183               }
 184               aTempListOfShape.Clear();
 185             } else if(aTempListOfShape.Last() == aTempShape) {
 186               const TopoDS_Shape& aTF = aTempListOfShape.First();
 187               if(aTempMap.Add(aTF)) {
 188                 aTempList.Append(aTF);
 189                 aFreeShapes.Remove(aTF);
 190               }
 191               aTempListOfShape.Clear();
 192             }
 193           }
 194         }
 195       }
 196       aShapesWithCommonSubshapes.Append(aTempMap);
 197     }
 198   }
 199
 200   // Combine shapes with common subshapes.
 201   for(NCollection_Vector<NCollection_Map<TopoDS_Shape>>::Iterator anIter(aShapesWithCommonSubshapes); anIter.More(); anIter.Next()) {
 202     TopoDS_Shell aShell;
 203     TopoDS_CompSolid aCSolid;
 204     TopoDS_Builder aBuilder;
 205     theType == GeomAPI_Shape::COMPSOLID ? aBuilder.MakeCompSolid(aCSolid) : aBuilder.MakeShell(aShell);
 206     NCollection_Map<TopoDS_Shape>& aShapesMap = anIter.ChangeValue();
 207     for(TopExp_Explorer anExp(aShapesComp, aTA); anExp.More(); anExp.Next()) {
 208       const TopoDS_Shape& aShape = anExp.Current();
 209       if(aShapesMap.Contains(aShape)) {
 210         theType == GeomAPI_Shape::COMPSOLID ? aBuilder.Add(aCSolid, aShape) : aBuilder.Add(aShell, aShape);
 211         aShapesMap.Remove(aShape);
 212       }
 213     }
 214     std::shared_ptr<GeomAPI_Shape> aGeomShape(new GeomAPI_Shape);
 215     TopoDS_Shape* aSh = theType == GeomAPI_Shape::COMPSOLID ? new TopoDS_Shape(aCSolid) : new TopoDS_Shape(aShell);
 216     aGeomShape->setImpl<TopoDS_Shape>(aSh);
 217     theCombinedShapes.push_back(aGeomShape);
 218   }
 219
 220   // Adding free shapes.
 221   for(TopExp_Explorer anExp(aShapesComp, aTA); anExp.More(); anExp.Next()) {
 222     const TopoDS_Shape& aShape = anExp.Current();
 223     if(aFreeShapes.Contains(aShape)) {
 224       std::shared_ptr<GeomAPI_Shape> aGeomShape(new GeomAPI_Shape);
 225       aGeomShape->setImpl<TopoDS_Shape>(new TopoDS_Shape(aShape));
 226       theFreeShapes.push_back(aGeomShape);
 227     }
 228   }
 229
 230   if(theCombinedShapes.size() == 1 && theFreeShapes.size() == 0) {
 231     aResult = theCombinedShapes.front();
 232   } else if(theCombinedShapes.size() == 0 && theFreeShapes.size() == 1) {
 233     aResult = theFreeShapes.front();
 234   } else {
 235     TopoDS_Compound aResultComp;
 236     TopoDS_Builder aBuilder;
 237     aBuilder.MakeCompound(aResultComp);
 238     for(ListOfShape::const_iterator anIter = theCombinedShapes.cbegin(); anIter != theCombinedShapes.cend(); anIter++) {
 239       aBuilder.Add(aResultComp, (*anIter)->impl<TopoDS_Shape>());
 240     }
 241     for(ListOfShape::const_iterator anIter = theFreeShapes.cbegin(); anIter != theFreeShapes.cend(); anIter++) {
 242       aBuilder.Add(aResultComp, (*anIter)->impl<TopoDS_Shape>());
 243     }
 244     aResult->setImpl(new TopoDS_Shape(aResultComp));
 245   }
 246
 247   return aResult;
 248 }
 249
 250 //==================================================================================================
 251 static void addSimpleShapeToList(const TopoDS_Shape& theShape, NCollection_List<TopoDS_Shape>& theList)
 252 {
 253   if(theShape.IsNull()) {
 254     return;
 255   }
 256
 257   if(theShape.ShapeType() == TopAbs_COMPOUND) {
 258     for(TopoDS_Iterator anIt(theShape); anIt.More(); anIt.Next()) {
 259       addSimpleShapeToList(anIt.Value(), theList);
 260     }
 261   } else {
 262     theList.Append(theShape);
 263   }
 264 }
 265
 266 //==================================================================================================
 267 static TopoDS_Compound makeCompound(const NCollection_List<TopoDS_Shape> theShapes)
 268 {
 269   TopoDS_Compound aCompound;
 270
 271   BRep_Builder aBuilder;
 272   aBuilder.MakeCompound(aCompound);
 273
 274   for(NCollection_List<TopoDS_Shape>::Iterator anIt(theShapes); anIt.More(); anIt.Next()) {
 275     aBuilder.Add(aCompound, anIt.Value());
 276   }
 277
 278   return aCompound;
 279 }
 280
 281 //==================================================================================================
 282 std::shared_ptr<GeomAPI_Shape> GeomAlgoAPI_ShapeTools::groupSharedTopology(const std::shared_ptr<GeomAPI_Shape> theCompound)
 283 {
 284   GeomShapePtr aResult = theCompound;
 285
 286   if(!theCompound.get()) {
 287     return aResult;
 288   }
 289
 290   TopoDS_Shape anInShape = aResult->impl<TopoDS_Shape>();
 291   NCollection_List<TopoDS_Shape> anUngroupedShapes;
 292   addSimpleShapeToList(anInShape, anUngroupedShapes);
 293
 294   NCollection_Vector<NCollection_List<TopoDS_Shape>> aGroups;
 295   while(!anUngroupedShapes.IsEmpty()) {
 296     NCollection_List<TopoDS_Shape> aGroupedShapes;
 297     aGroupedShapes.Append(anUngroupedShapes.First());
 298     anUngroupedShapes.RemoveFirst();
 299     for(NCollection_List<TopoDS_Shape>::Iterator aGroupIt(aGroupedShapes); aGroupIt.More(); aGroupIt.Next()) {
 300       const TopoDS_Shape& aGroupShape = aGroupIt.Value();
 301       for(NCollection_List<TopoDS_Shape>::Iterator anUngroupedIt(anUngroupedShapes); anUngroupedIt.More(); anUngroupedIt.Next()) {
 302         const TopoDS_Shape& anUngroupedShape = anUngroupedIt.Value();
 303         bool isFound = false;
 304         for(TopExp_Explorer aGroupShapeExp(aGroupShape, TopAbs_VERTEX); aGroupShapeExp.More(); aGroupShapeExp.Next()) {
 305           const TopoDS_Shape& aVertex1 = aGroupShapeExp.Current();
 306           for(TopExp_Explorer anUngroupedShapeExp(anUngroupedShape, TopAbs_VERTEX); anUngroupedShapeExp.More(); anUngroupedShapeExp.Next()) {
 307             const TopoDS_Shape& aVertex2 = anUngroupedShapeExp.Current();
 308             if(aVertex1.IsSame(aVertex2)) {
 309               aGroupedShapes.Append(anUngroupedShape);
 310               anUngroupedShapes.Remove(anUngroupedIt);
 311               isFound = true;
 312               break;
 313             }
 314           }
 315           if(isFound) {
 316             break;
 317           }
 318         }
 319         if(!anUngroupedIt.More()) {
 320           break;
 321         }
 322       }
 323     }
 324     aGroups.Append(aGroupedShapes);
 325   }
 326
 327   if(aGroups.Size() == 1) {
 328     NCollection_List<TopoDS_Shape> aGroup = aGroups.First();
 329     GeomShapePtr aGeomShape(new GeomAPI_Shape());
 330     aGeomShape->setImpl(new TopoDS_Shape(makeCompound(aGroup)));
 331     ListOfShape aCompSolids, aFreeSolids;
 332     aGeomShape = GeomAlgoAPI_ShapeTools::combineShapes(aGeomShape,
 333                                                         GeomAPI_Shape::COMPSOLID,
 334                                                         aCompSolids,
 335                                                         aFreeSolids);
 336     aResult = aGeomShape;
 337   } else {
 338     TopoDS_Compound aCompound;
 339     BRep_Builder aBuilder;
 340     aBuilder.MakeCompound(aCompound);
 341     ListOfShape aCompSolids, aFreeSolids;
 342     for(NCollection_Vector<NCollection_List<TopoDS_Shape>>::Iterator anIt(aGroups); anIt.More(); anIt.Next()) {
 343       NCollection_List<TopoDS_Shape> aGroup = anIt.Value();
 344       GeomShapePtr aGeomShape(new GeomAPI_Shape());
 345       if(aGroup.Size() == 1) {
 346         aGeomShape->setImpl(new TopoDS_Shape(aGroup.First()));
 347       } else {
 348         aGeomShape->setImpl(new TopoDS_Shape(makeCompound(aGroup)));
 349         aGeomShape = GeomAlgoAPI_ShapeTools::combineShapes(aGeomShape,
 350                                                            GeomAPI_Shape::COMPSOLID,
 351                                                            aCompSolids,
 352                                                            aFreeSolids);
 353       }
 354       aBuilder.Add(aCompound, aGeomShape->impl<TopoDS_Shape>());
 355     }
 356
 357     if(!aCompound.IsNull()) {
 358       aResult->setImpl(new TopoDS_Shape(aCompound));
 359     }
 360   }
 361
 362   return aResult;
 363 }
 364
 365 //==================================================================================================
 366 std::list<std::shared_ptr<GeomAPI_Pnt> > GeomAlgoAPI_ShapeTools::getBoundingBox(const ListOfShape& theShapes, const double theEnlarge)
 367 {
 368   // Bounding box of all objects.
 369   Bnd_Box aBndBox;
 370
 371   // Getting box.
 372   for (ListOfShape::const_iterator anObjectsIt = theShapes.begin(); anObjectsIt != theShapes.end(); anObjectsIt++) {
 373     const TopoDS_Shape& aShape = (*anObjectsIt)->impl<TopoDS_Shape>();
 374     BRepBndLib::Add(aShape, aBndBox);
 375   }
 376
 377   if(theEnlarge != 0.0) {
 378     // We enlarge bounding box just to be sure that plane will be large enough to cut all objects.
 379     aBndBox.Enlarge(theEnlarge);
 380   }
 381
 382   Standard_Real aXArr[2] = {aBndBox.CornerMin().X(), aBndBox.CornerMax().X()};
 383   Standard_Real aYArr[2] = {aBndBox.CornerMin().Y(), aBndBox.CornerMax().Y()};
 384   Standard_Real aZArr[2] = {aBndBox.CornerMin().Z(), aBndBox.CornerMax().Z()};
 385   std::list<std::shared_ptr<GeomAPI_Pnt> > aResultPoints;
 386   int aNum = 0;
 387   for(int i = 0; i < 2; i++) {
 388     for(int j = 0; j < 2; j++) {
 389       for(int k = 0; k < 2; k++) {
 390         std::shared_ptr<GeomAPI_Pnt> aPnt(new GeomAPI_Pnt(aXArr[i], aYArr[j], aZArr[k]));
 391         aResultPoints.push_back(aPnt);
 392       }
 393     }
 394   }
 395
 396   return aResultPoints;
 397 }
 398
 399 //==================================================================================================
 400 std::shared_ptr<GeomAPI_Shape> GeomAlgoAPI_ShapeTools::faceToInfinitePlane(const std::shared_ptr<GeomAPI_Shape> theFace)
 401 {
 402   if (!theFace.get())
 403     return std::shared_ptr<GeomAPI_Shape>();
 404
 405   TopoDS_Face aPlaneFace = TopoDS::Face(theFace->impl<TopoDS_Shape>());
 406   if (aPlaneFace.IsNull())
 407     return std::shared_ptr<GeomAPI_Shape>();
 408
 409   Handle(Geom_Plane) aPlane = Handle(Geom_Plane)::DownCast(BRep_Tool::Surface(aPlaneFace));
 410   if (aPlane.IsNull())
 411     return std::shared_ptr<GeomAPI_Shape>();
 412
 413   // make an infinity face on the plane
 414   TopoDS_Shape anInfiniteFace = BRepBuilderAPI_MakeFace(aPlane->Pln()).Shape();
 415
 416   std::shared_ptr<GeomAPI_Shape> aResult(new GeomAPI_Shape);
 417   aResult->setImpl(new TopoDS_Shape(anInfiniteFace));
 418   return aResult;
 419 }
 420
 421 //==================================================================================================
 422 std::shared_ptr<GeomAPI_Face> GeomAlgoAPI_ShapeTools::fitPlaneToBox(const std::shared_ptr<GeomAPI_Shape> thePlane,
 423                                                                     const std::list<std::shared_ptr<GeomAPI_Pnt> >& thePoints)
 424 {
 425   std::shared_ptr<GeomAPI_Face> aResultFace;
 426
 427   if(!thePlane.get()) {
 428     return aResultFace;
 429   }
 430
 431   const TopoDS_Shape& aShape = thePlane->impl<TopoDS_Shape>();
 432   if(aShape.ShapeType() != TopAbs_FACE) {
 433     return aResultFace;
 434   }
 435
 436   TopoDS_Face aFace = TopoDS::Face(aShape);
 437   Handle(Geom_Surface) aSurf = BRep_Tool::Surface(aFace);
 438   if(aSurf.IsNull()) {
 439     return aResultFace;
 440   }
 441
 442   GeomLib_IsPlanarSurface isPlanar(aSurf);
 443   if(!isPlanar.IsPlanar()) {
 444     return aResultFace;
 445   }
 446
 447   if(thePoints.size() != 8) {
 448     return aResultFace;
 449   }
 450
 451   const gp_Pln& aFacePln = isPlanar.Plan();
 452   Handle(Geom_Plane) aFacePlane = new Geom_Plane(aFacePln);
 453   IntAna_Quadric aQuadric(aFacePln);
 454   Standard_Real UMin, UMax, VMin, VMax;
 455   UMin = UMax = VMin = VMax = 0;
 456   for (std::list<std::shared_ptr<GeomAPI_Pnt> >::const_iterator aPointsIt = thePoints.begin(); aPointsIt != thePoints.end(); aPointsIt++) {
 457     const gp_Pnt& aPnt = (*aPointsIt)->impl<gp_Pnt>();
 458     gp_Lin aLin(aPnt, aFacePln.Axis().Direction());
 459     IntAna_IntConicQuad anIntAna(aLin, aQuadric);
 460     const gp_Pnt& aPntOnFace = anIntAna.Point(1);
 461     Standard_Real aPntU(0), aPntV(0);
 462     GeomLib_Tool::Parameters(aFacePlane, aPntOnFace, Precision::Confusion(), aPntU, aPntV);
 463     if(aPntU < UMin) UMin = aPntU;
 464     if(aPntU > UMax) UMax = aPntU;
 465     if(aPntV < VMin) VMin = aPntV;
 466     if(aPntV > VMax) VMax = aPntV;
 467   }
 468   aResultFace.reset(new GeomAPI_Face());
 469   aResultFace->setImpl(new TopoDS_Face(BRepLib_MakeFace(aFacePln, UMin, UMax, VMin, VMax).Face()));
 470
 471   return aResultFace;
 472 }
 473
 474 //==================================================================================================
 475 void GeomAlgoAPI_ShapeTools::findBounds(const std::shared_ptr<GeomAPI_Shape> theShape,
 476                                         std::shared_ptr<GeomAPI_Vertex>& theV1,
 477                                         std::shared_ptr<GeomAPI_Vertex>& theV2)
 478 {
 479   if(!theShape.get()) {
 480     std::shared_ptr<GeomAPI_Vertex> aVertex(new GeomAPI_Vertex);
 481     aVertex->setImpl(new TopoDS_Vertex());
 482     theV1 = aVertex;
 483     theV2 = aVertex;
 484     return;
 485   }
 486
 487   const TopoDS_Shape& aShape = theShape->impl<TopoDS_Shape>();
 488   TopoDS_Vertex aV1, aV2;
 489   ShapeAnalysis::FindBounds(aShape, aV1, aV2);
 490
 491   std::shared_ptr<GeomAPI_Vertex> aGeomV1(new GeomAPI_Vertex()), aGeomV2(new GeomAPI_Vertex());
 492   aGeomV1->setImpl(new TopoDS_Vertex(aV1));
 493   aGeomV2->setImpl(new TopoDS_Vertex(aV2));
 494   theV1 = aGeomV1;
 495   theV2 = aGeomV2;
 496 }
 497
 498 //==================================================================================================
 499 void GeomAlgoAPI_ShapeTools::makeFacesWithHoles(const std::shared_ptr<GeomAPI_Pnt> theOrigin,
 500                                                 const std::shared_ptr<GeomAPI_Dir> theDirection,
 501                                                 const ListOfShape& theWires,
 502                                                 ListOfShape& theFaces)
 503 {
 504   BRepBuilderAPI_MakeFace aMKFace(gp_Pln(theOrigin->impl<gp_Pnt>(),
 505                                           theDirection->impl<gp_Dir>()));
 506   TopoDS_Face aFace = aMKFace.Face();
 507
 508   BRepAlgo_FaceRestrictor aFRestrictor;
 509   aFRestrictor.Init(aFace, Standard_False, Standard_True);
 510   for(ListOfShape::const_iterator anIt = theWires.cbegin();
 511       anIt != theWires.cend();
 512       ++anIt) {
 513     TopoDS_Wire aWire = TopoDS::Wire((*anIt)->impl<TopoDS_Shape>());
 514     aFRestrictor.Add(aWire);
 515   }
 516
 517   aFRestrictor.Perform();
 518
 519   if(!aFRestrictor.IsDone()) {
 520     return;
 521   }
 522
 523   for(; aFRestrictor.More(); aFRestrictor.Next()) {
 524     GeomShapePtr aShape(new GeomAPI_Shape());
 525     aShape->setImpl(new TopoDS_Shape(aFRestrictor.Current()));
 526     theFaces.push_back(aShape);
 527   }
 528 }
 529
 530 //==================================================================================================
 531 std::shared_ptr<GeomAPI_Pln> GeomAlgoAPI_ShapeTools::findPlane(const ListOfShape& theShapes)
 532 {
 533   TopoDS_Compound aCompound;
 534   BRep_Builder aBuilder;
 535   aBuilder.MakeCompound(aCompound);
 536
 537   for(ListOfShape::const_iterator anIt = theShapes.cbegin(); anIt != theShapes.cend(); ++anIt) {
 538     aBuilder.Add(aCompound, (*anIt)->impl<TopoDS_Shape>());
 539   }
 540   BRepBuilderAPI_FindPlane aFindPlane(aCompound);
 541
 542   if(aFindPlane.Found() != Standard_True) {
 543     return std::shared_ptr<GeomAPI_Pln>();
 544   }
 545
 546   Handle(Geom_Plane) aPlane = aFindPlane.Plane();
 547   gp_Pnt aLoc = aPlane->Location();
 548   gp_Dir aDir = aPlane->Axis().Direction();
 549
 550   std::shared_ptr<GeomAPI_Pnt> aGeomPnt(new GeomAPI_Pnt(aLoc.X(), aLoc.Y(), aLoc.Z()));
 551   std::shared_ptr<GeomAPI_Dir> aGeomDir(new GeomAPI_Dir(aDir.X(), aDir.Y(), aDir.Z()));
 552
 553   std::shared_ptr<GeomAPI_Pln> aPln(new GeomAPI_Pln(aGeomPnt, aGeomDir));
 554
 555   return aPln;
 556 }
 557
 558 //==================================================================================================
 559 bool GeomAlgoAPI_ShapeTools::isSubShapeInsideShape(const std::shared_ptr<GeomAPI_Shape> theSubShape,
 560                                                    const std::shared_ptr<GeomAPI_Shape> theBaseShape)
 561 {
 562   if(!theSubShape.get() || !theBaseShape.get()) {
 563     return false;
 564   }
 565
 566   const TopoDS_Shape& aSubShape = theSubShape->impl<TopoDS_Shape>();
 567   const TopoDS_Shape& aBaseShape = theBaseShape->impl<TopoDS_Shape>();
 568
 569   if(aSubShape.ShapeType() == TopAbs_VERTEX) {
 570     // If sub-shape is a vertex check distance to shape. If it is <= Precision::Confusion() then OK.
 571     BRepExtrema_DistShapeShape aDist(aBaseShape, aSubShape);
 572     aDist.Perform();
 573     if(!aDist.IsDone() || aDist.Value() > Precision::Confusion()) {
 574       return false;
 575     }
 576   } else if (aSubShape.ShapeType() == TopAbs_EDGE) {
 577     if(aBaseShape.ShapeType() == TopAbs_FACE) {
 578       // Check that edge is on face surface.
 579       TopoDS_Face aFace = TopoDS::Face(aBaseShape);
 580       TopoDS_Edge anEdge = TopoDS::Edge(aSubShape);
 581       BRepLib_CheckCurveOnSurface aCheck(anEdge, aFace);
 582       aCheck.Perform();
 583       if(!aCheck.IsDone() || aCheck.MaxDistance() > Precision::Confusion()) {
 584         return false;
 585       }
 586
 587       // Check intersections.
 588       TopoDS_Vertex aV1, aV2;
 589       ShapeAnalysis::FindBounds(anEdge, aV1, aV2);
 590       gp_Pnt aPnt1 = BRep_Tool::Pnt(aV1);
 591       gp_Pnt aPnt2 = BRep_Tool::Pnt(aV2);
 592       for(TopExp_Explorer anExp(aBaseShape, TopAbs_EDGE); anExp.More(); anExp.Next()) {
 593         const TopoDS_Shape& anEdgeOnFace = anExp.Current();
 594         BRepExtrema_DistShapeShape aDist(anEdgeOnFace, anEdge);
 595         aDist.Perform();
 596         if(aDist.IsDone() && aDist.Value() <= Precision::Confusion()) {
 597           // Edge intersect face bound. Check that it is not on edge begin or end.
 598           for(Standard_Integer anIndex = 1; anIndex <= aDist.NbSolution(); ++anIndex) {
 599             gp_Pnt aPntOnSubShape = aDist.PointOnShape2(anIndex);
 600             if(aPntOnSubShape.Distance(aPnt1) > Precision::Confusion()
 601                 && aPntOnSubShape.Distance(aPnt2) > Precision::Confusion()) {
 602               return false;
 603             }
 604           }
 605         }
 606       }
 607
 608       // No intersections found. Edge is inside or outside face. Check it.
 609       BRepAdaptor_Curve aCurveAdaptor(anEdge);
 610       gp_Pnt aPointToCheck = aCurveAdaptor.Value((aCurveAdaptor.FirstParameter() + aCurveAdaptor.LastParameter()) / 2.0);
 611       Handle(Geom_Surface) aSurface = BRep_Tool::Surface(aFace);
 612       ShapeAnalysis_Surface aSAS(aSurface);
 613       gp_Pnt2d aPointOnFace = aSAS.ValueOfUV(aPointToCheck, Precision::Confusion());
 614       BRepTopAdaptor_FClass2d aFClass2d(aFace, Precision::Confusion());
 615       if(aFClass2d.Perform(aPointOnFace) == TopAbs_OUT) {
 616         return false;
 617       }
 618
 619     } else {
 620       return false;
 621     }
 622   } else {
 623     return false;
 624   }
 625
 626   return true;
 627 }
 628
 629 //==================================================================================================
 630 bool GeomAlgoAPI_ShapeTools::isShapeValid(const std::shared_ptr<GeomAPI_Shape> theShape)
 631 {
 632   if(!theShape.get()) {
 633     return false;
 634   }
 635
 636   BRepCheck_Analyzer aChecker(theShape->impl<TopoDS_Shape>());
 637   return (aChecker.IsValid() == Standard_True);
 638 }
 639
 640 //==================================================================================================
 641 std::shared_ptr<GeomAPI_Shape> GeomAlgoAPI_ShapeTools::getFaceOuterWire(const std::shared_ptr<GeomAPI_Shape> theFace)
 642 {
 643   GeomShapePtr anOuterWire;
 644
 645   if(!theFace.get() || !theFace->isFace()) {
 646     return anOuterWire;
 647   }
 648
 649   TopoDS_Face aFace = TopoDS::Face(theFace->impl<TopoDS_Shape>());
 650   TopoDS_Wire aWire = BRepTools::OuterWire(aFace);
 651
 652   anOuterWire.reset(new GeomAPI_Shape());
 653   anOuterWire->setImpl(new TopoDS_Shape(aWire));
 654
 655   return anOuterWire;
 656 }
 657
 658 //==================================================================================================
 659 bool GeomAlgoAPI_ShapeTools::isParallel(const std::shared_ptr<GeomAPI_Edge> theEdge,
 660                                         const std::shared_ptr<GeomAPI_Face> theFace)
 661 {
 662   if(!theEdge.get() || !theFace.get()) {
 663     return false;
 664   }
 665
 666   TopoDS_Edge anEdge = TopoDS::Edge(theEdge->impl<TopoDS_Shape>());
 667   TopoDS_Face aFace  = TopoDS::Face(theFace->impl<TopoDS_Shape>());
 668
 669   BRepExtrema_ExtCF anExt(anEdge, aFace);
 670   return anExt.IsParallel() == Standard_True;
 671 }
 672
 673 //==================================================================================================
 674 void GeomAlgoAPI_ShapeTools::splitShape(const std::shared_ptr<GeomAPI_Shape>& theBaseShape,
 675                                         const std::set<std::shared_ptr<GeomAPI_Pnt> >& thePoints,
 676                                         std::set<std::shared_ptr<GeomAPI_Shape> >& theShapes)
 677 {
 678   // General Fuse to split edge by vertices
 679   BOPAlgo_Builder aBOP;
 680   TopoDS_Edge aBaseEdge = theBaseShape->impl<TopoDS_Edge>();
 681   // Rebuild closed edge to place vertex to one of split points.
 682   // This will prevent edge to be split on seam vertex.
 683   if (BRep_Tool::IsClosed(aBaseEdge))
 684   {
 685     Standard_Real aFirst, aLast;
 686     Handle(Geom_Curve) aCurve = BRep_Tool::Curve(aBaseEdge, aFirst, aLast);
 687
 688     std::set<std::shared_ptr<GeomAPI_Pnt> >::const_iterator aPIt = thePoints.begin();
 689     gp_Pnt aPoint((*aPIt)->x(), (*aPIt)->y(), (*aPIt)->z());
 690
 691     TopAbs_Orientation anOrientation = aBaseEdge.Orientation();
 692     aBaseEdge = BRepBuilderAPI_MakeEdge(aCurve, aPoint, aPoint).Edge();
 693     aBaseEdge.Orientation(anOrientation);
 694   }
 695   aBOP.AddArgument(aBaseEdge);
 696
 697   std::set<std::shared_ptr<GeomAPI_Pnt> >::const_iterator aPtIt = thePoints.begin();
 698   for (; aPtIt != thePoints.end(); ++aPtIt) {
 699     std::shared_ptr<GeomAPI_Pnt> aPnt = *aPtIt;
 700     TopoDS_Vertex aV = BRepBuilderAPI_MakeVertex(gp_Pnt(aPnt->x(), aPnt->y(), aPnt->z()));
 701     aBOP.AddArgument(aV);
 702   }
 703
 704   aBOP.Perform();
 705   if (aBOP.ErrorStatus())
 706     return;
 707
 708   // Collect splits
 709   const TopTools_ListOfShape& aSplits = aBOP.Modified(aBaseEdge);
 710   TopTools_ListIteratorOfListOfShape anIt(aSplits);
 711   for (; anIt.More(); anIt.Next()) {
 712     std::shared_ptr<GeomAPI_Shape> anEdge(new GeomAPI_Shape);
 713     anEdge->setImpl(new TopoDS_Shape(anIt.Value()));
 714     theShapes.insert(anEdge);
 715   }
 716 }