src/GeomAlgoAPI/GeomAlgoAPI_Prism.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        GeomAlgoAPI_Prism.cpp
   4 // Created:     5 May 2015
   5 // Author:      Dmitry Bobylev
   6
   7 #include "GeomAlgoAPI_Prism.h"
   8
   9 #include <GeomAPI_Face.h>
  10 #include <GeomAPI_Pln.h>
  11 #include <GeomAPI_Pnt.h>
  12 #include <GeomAPI_ShapeExplorer.h>
  13 #include <GeomAPI_XYZ.h>
  14 #include <GeomAlgoAPI_DFLoader.h>
  15 #include <GeomAlgoAPI_FaceBuilder.h>
  16 #include <GeomAlgoAPI_ShapeTools.h>
  17
  18 #include <Bnd_Box.hxx>
  19 #include <BRep_Builder.hxx>
  20 #include <BRepAlgoAPI_Cut.hxx>
  21 #include <BRepBndLib.hxx>
  22 #include <BRepBuilderAPI_FindPlane.hxx>
  23 #include <BRepBuilderAPI_Transform.hxx>
  24 #include <BRepPrimAPI_MakePrism.hxx>
  25 #include <Geom_Plane.hxx>
  26 #include <gp_Pln.hxx>
  27 #include <IntAna_IntConicQuad.hxx>
  28 #include <IntAna_Quadric.hxx>
  29 #include <TopExp_Explorer.hxx>
  30 #include <TopoDS_Shell.hxx>
  31 #include <TopoDS_Solid.hxx>
  32 #include <TopTools_ListIteratorOfListOfShape.hxx>
  33
  34 //=================================================================================================
  35 GeomAlgoAPI_Prism::GeomAlgoAPI_Prism(const GeomShapePtr theBaseShape,
  36                                      const double       theToSize,
  37                                      const double       theFromSize)
  38 {
  39   build(theBaseShape, std::shared_ptr<GeomAPI_Dir>(), GeomShapePtr(), theToSize, GeomShapePtr(), theFromSize);
  40 }
  41
  42 //=================================================================================================
  43 GeomAlgoAPI_Prism::GeomAlgoAPI_Prism(const GeomShapePtr                 theBaseShape,
  44                                      const std::shared_ptr<GeomAPI_Dir> theDirection,
  45                                      const double                       theToSize,
  46                                      const double                       theFromSize)
  47 {
  48   build(theBaseShape, theDirection, GeomShapePtr(), theToSize, GeomShapePtr(), theFromSize);
  49 }
  50
  51 //=================================================================================================
  52 GeomAlgoAPI_Prism::GeomAlgoAPI_Prism(const GeomShapePtr theBaseShape,
  53                                      const GeomShapePtr theToShape,
  54                                      const double       theToSize,
  55                                      const GeomShapePtr theFromShape,
  56                                      const double       theFromSize)
  57 {
  58   build(theBaseShape, std::shared_ptr<GeomAPI_Dir>(), theToShape, theToSize, theFromShape, theFromSize);
  59 }
  60
  61 //=================================================================================================
  62 GeomAlgoAPI_Prism::GeomAlgoAPI_Prism(const GeomShapePtr                 theBaseShape,
  63                                      const std::shared_ptr<GeomAPI_Dir> theDirection,
  64                                      const GeomShapePtr                 theToShape,
  65                                      const double                       theToSize,
  66                                      const GeomShapePtr                 theFromShape,
  67                                      const double                       theFromSize)
  68 {
  69   build(theBaseShape, theDirection, theToShape, theToSize, theFromShape, theFromSize);
  70 }
  71
  72 //=================================================================================================
  73 void GeomAlgoAPI_Prism::build(const GeomShapePtr&                theBaseShape,
  74                               const std::shared_ptr<GeomAPI_Dir> theDirection,
  75                               const GeomShapePtr&                theToShape,
  76                               const double                       theToSize,
  77                               const GeomShapePtr&                theFromShape,
  78                               const double                       theFromSize)
  79 {
  80   if(!theBaseShape.get() ||
  81     (((!theFromShape.get() && !theToShape.get()) || (theFromShape.get() && theToShape.get() && theFromShape->isEqual(theToShape)))
  82     && (theFromSize == -theToSize))) {
  83     return;
  84   }
  85
  86   // Getting base shape.
  87   const TopoDS_Shape& aBaseShape = theBaseShape->impl<TopoDS_Shape>();
  88
  89   // Getting direction.
  90   gp_Vec aDirVec;
  91   std::shared_ptr<GeomAPI_Pnt> aBaseLoc;
  92   std::shared_ptr<GeomAPI_Dir> aBaseDir;
  93   GeomShapePtr aBasePlane;
  94   const bool isBoundingShapesSet = theFromShape.get() || theToShape.get();
  95   BRepBuilderAPI_FindPlane aFindPlane(aBaseShape);
  96   if(aBaseShape.ShapeType() == TopAbs_VERTEX || aBaseShape.ShapeType() == TopAbs_EDGE ||
  97      aFindPlane.Found() != Standard_True) {
  98     // Direction and both bounding planes should be set or empty.
  99     if(!theDirection.get() || (isBoundingShapesSet && (!theToShape.get() || !theFromShape.get()))) {
 100       return;
 101     }
 102
 103     Handle(Geom_Plane) aPlane = aFindPlane.Plane();
 104     gp_Pnt aLoc = aPlane->Axis().Location();
 105     aDirVec = aPlane->Axis().Direction();
 106
 107     aBaseLoc.reset(new GeomAPI_Pnt(aLoc.X(), aLoc.Y(), aLoc.Z()));
 108     aBaseDir.reset(new GeomAPI_Dir(aDirVec.X(), aDirVec.Y(), aDirVec.Z()));
 109     aBasePlane = GeomAlgoAPI_FaceBuilder::planarFace(aBaseLoc, aBaseDir);
 110   }
 111
 112   TopoDS_Shape aResult;
 113   if(!isBoundingShapesSet) {
 114     // Moving base shape.
 115     gp_Trsf aTrsf;
 116     aTrsf.SetTranslation(aDirVec * -theFromSize);
 117     BRepBuilderAPI_Transform* aTransformBuilder = new BRepBuilderAPI_Transform(aBaseShape, aTrsf);
 118     if(!aTransformBuilder) {
 119       return;
 120     }
 121     this->appendAlgo(std::shared_ptr<GeomAlgoAPI_MakeShape>(new GeomAlgoAPI_MakeShape(aTransformBuilder)));
 122     if(!aTransformBuilder->IsDone()) {
 123       return;
 124     }
 125     TopoDS_Shape aMovedBase = aTransformBuilder->Shape();
 126
 127     // Making prism.
 128     BRepPrimAPI_MakePrism* aPrismBuilder = new BRepPrimAPI_MakePrism(aMovedBase, aDirVec * (theFromSize + theToSize));
 129     if(!aPrismBuilder) {
 130       return;
 131     }
 132     this->appendAlgo(std::shared_ptr<GeomAlgoAPI_MakeShape>(new GeomAlgoAPI_MakeShape(aPrismBuilder)));
 133     if(!aPrismBuilder->IsDone()) {
 134       return;
 135     }
 136     aResult = aPrismBuilder->Shape();
 137
 138     // Setting naming.
 139     for(TopExp_Explorer anExp(aMovedBase, TopAbs_FACE); anExp.More(); anExp.Next()) {
 140       const TopoDS_Shape& aFace = anExp.Current();
 141       GeomShapePtr aFromShape(new GeomAPI_Shape), aToShape(new GeomAPI_Shape);
 142       aFromShape->setImpl(new TopoDS_Shape(aPrismBuilder->FirstShape(aFace)));
 143       aToShape->setImpl(new TopoDS_Shape(aPrismBuilder->LastShape(aFace)));
 144       this->addFromShape(aFromShape);
 145       this->addToShape(aToShape);
 146     }
 147   } else {
 148     GeomShapePtr aBoundingFromShape = theFromShape ? theFromShape : aBasePlane;
 149     GeomShapePtr aBoundingToShape   = theToShape   ? theToShape   : aBasePlane;
 150
 151     // Moving prism bounding faces according to "from" and "to" sizes.
 152     std::shared_ptr<GeomAPI_Face> aFromFace(new GeomAPI_Face(aBoundingFromShape));
 153     std::shared_ptr<GeomAPI_Pln>  aFromPln = aFromFace->getPlane();
 154     std::shared_ptr<GeomAPI_Pnt>  aFromLoc = aFromPln->location();
 155     std::shared_ptr<GeomAPI_Dir>  aFromDir = aFromPln->direction();
 156
 157     std::shared_ptr<GeomAPI_Face> aToFace(new GeomAPI_Face(aBoundingToShape));
 158     std::shared_ptr<GeomAPI_Pln>  aToPln = aToFace->getPlane();
 159     std::shared_ptr<GeomAPI_Pnt>  aToLoc = aToPln->location();
 160     std::shared_ptr<GeomAPI_Dir>  aToDir = aToPln->direction();
 161
 162     bool aSign = aFromLoc->xyz()->dot(aBaseDir->xyz()) > aToLoc->xyz()->dot(aBaseDir->xyz());
 163
 164     std::shared_ptr<GeomAPI_Pnt> aFromPnt(new GeomAPI_Pnt(aFromLoc->xyz()->added(aBaseDir->xyz()->multiplied(
 165                                                           aSign ? theFromSize : -theFromSize))));
 166     aBoundingFromShape = GeomAlgoAPI_FaceBuilder::planarFace(aFromPnt, aFromDir);
 167
 168     std::shared_ptr<GeomAPI_Pnt> aToPnt(new GeomAPI_Pnt(aToLoc->xyz()->added(aBaseDir->xyz()->multiplied(
 169                                                         aSign ? -theToSize : theToSize))));
 170     aBoundingToShape = GeomAlgoAPI_FaceBuilder::planarFace(aToPnt, aToDir);
 171
 172     // Getting bounding box for base shape.
 173     Bnd_Box aBndBox;
 174     BRepBndLib::Add(aBaseShape, aBndBox);
 175     Standard_Real aXArr[2] = {aBndBox.CornerMin().X(), aBndBox.CornerMax().X()};
 176     Standard_Real aYArr[2] = {aBndBox.CornerMin().Y(), aBndBox.CornerMax().Y()};
 177     Standard_Real aZArr[2] = {aBndBox.CornerMin().Z(), aBndBox.CornerMax().Z()};
 178     gp_Pnt aPoints[8];
 179     int aNum = 0;
 180     for(int i = 0; i < 2; i++) {
 181       for(int j = 0; j < 2; j++) {
 182         for(int k = 0; k < 2; k++) {
 183           aPoints[aNum] = gp_Pnt(aXArr[i], aYArr[j], aZArr[k]);
 184           aNum++;
 185         }
 186       }
 187     }
 188
 189     // Project points to bounding planes. Search max distance to them.
 190     IntAna_Quadric aBndToQuadric(gp_Pln(aToPnt->impl<gp_Pnt>(), aToDir->impl<gp_Dir>()));
 191     IntAna_Quadric aBndFromQuadric(gp_Pln(aFromPnt->impl<gp_Pnt>(), aFromDir->impl<gp_Dir>()));
 192     Standard_Real aMaxToDist = 0, aMaxFromDist = 0;
 193     for(int i = 0; i < 8; i++) {
 194       gp_Lin aLine(aPoints[i], aDirVec);
 195       IntAna_IntConicQuad aToIntAna(aLine, aBndToQuadric);
 196       IntAna_IntConicQuad aFromIntAna(aLine, aBndFromQuadric);
 197       if(aToIntAna.NbPoints() == 0 || aFromIntAna.NbPoints() == 0) {
 198         return;
 199       }
 200       const gp_Pnt& aPntOnToFace = aToIntAna.Point(1);
 201       const gp_Pnt& aPntOnFromFace = aFromIntAna.Point(1);
 202       if(aPoints[i].Distance(aPntOnToFace) > aMaxToDist) {
 203         aMaxToDist = aPoints[i].Distance(aPntOnToFace);
 204       }
 205       if(aPoints[i].Distance(aPntOnFromFace) > aMaxFromDist) {
 206         aMaxFromDist = aPoints[i].Distance(aPntOnFromFace);
 207       }
 208     }
 209
 210     // We added 1 just to be sure that prism is long enough for boolean operation.
 211     double aPrismLength = aMaxToDist + aMaxFromDist + 1;
 212
 213     // Moving base shape.
 214     gp_Trsf aTrsf;
 215     aTrsf.SetTranslation(aDirVec * -aPrismLength);
 216     BRepBuilderAPI_Transform* aTransformBuilder = new BRepBuilderAPI_Transform(aBaseShape, aTrsf);
 217     if(!aTransformBuilder) {
 218       return;
 219     }
 220     this->appendAlgo(std::shared_ptr<GeomAlgoAPI_MakeShape>(new GeomAlgoAPI_MakeShape(aTransformBuilder)));
 221     if(!aTransformBuilder->IsDone()) {
 222       return;
 223     }
 224     TopoDS_Shape aMovedBase = aTransformBuilder->Shape();
 225
 226     // Making prism.
 227     BRepPrimAPI_MakePrism* aPrismBuilder = new BRepPrimAPI_MakePrism(aMovedBase, aDirVec * 2 * aPrismLength);
 228     if(!aPrismBuilder) {
 229       return;
 230     }
 231     this->appendAlgo(std::shared_ptr<GeomAlgoAPI_MakeShape>(new GeomAlgoAPI_MakeShape(aPrismBuilder)));
 232     if(!aPrismBuilder->IsDone()) {
 233       return;
 234     }
 235     aResult = aPrismBuilder->Shape();
 236
 237     // Orienting bounding planes.
 238     std::shared_ptr<GeomAPI_Pnt> aCentreOfMass = GeomAlgoAPI_ShapeTools::centreOfMass(theBaseShape);
 239     const gp_Pnt& aCentrePnt = aCentreOfMass->impl<gp_Pnt>();
 240     gp_Lin aLine(aCentrePnt, aDirVec);
 241     IntAna_IntConicQuad aToIntAna(aLine, aBndToQuadric);
 242     IntAna_IntConicQuad aFromIntAna(aLine, aBndFromQuadric);
 243     Standard_Real aToParameter = aToIntAna.ParamOnConic(1);
 244     Standard_Real aFromParameter = aFromIntAna.ParamOnConic(1);
 245     if(aToParameter > aFromParameter) {
 246       gp_Vec aVec = aToDir->impl<gp_Dir>();
 247       if((aVec * aDirVec) > 0) {
 248         aToDir->setImpl(new gp_Dir(aVec.Reversed()));
 249         aBoundingToShape = GeomAlgoAPI_FaceBuilder::planarFace(aToPnt, aToDir);
 250       }
 251       aVec = aFromDir->impl<gp_Dir>();
 252       if((aVec * aDirVec) < 0) {
 253         aFromDir->setImpl(new gp_Dir(aVec.Reversed()));
 254         aBoundingFromShape = GeomAlgoAPI_FaceBuilder::planarFace(aFromPnt, aFromDir);
 255       }
 256     } else {
 257       gp_Vec aVec = aToDir->impl<gp_Dir>();
 258       if((aVec * aDirVec) < 0) {
 259         aToDir->setImpl(new gp_Dir(aVec.Reversed()));
 260         aBoundingToShape = GeomAlgoAPI_FaceBuilder::planarFace(aToPnt, aToDir);
 261       }
 262       aVec = aFromDir->impl<gp_Dir>();
 263       if((aVec * aDirVec) > 0) {
 264         aFromDir->setImpl(new gp_Dir(aVec.Reversed()));
 265         aBoundingFromShape = GeomAlgoAPI_FaceBuilder::planarFace(aFromPnt, aFromDir);
 266       }
 267     }
 268
 269     // Making solids from bounding planes.
 270     TopoDS_Shell aToShell, aFromShell;
 271     TopoDS_Solid aToSolid, aFromSolid;
 272     const TopoDS_Shape& aToShape   = aBoundingToShape->impl<TopoDS_Shape>();
 273     const TopoDS_Shape& aFromShape = aBoundingFromShape->impl<TopoDS_Shape>();
 274     BRep_Builder aBoundingBuilder;
 275     aBoundingBuilder.MakeShell(aToShell);
 276     aBoundingBuilder.Add(aToShell, aToShape);
 277     aBoundingBuilder.MakeShell(aFromShell);
 278     aBoundingBuilder.Add(aFromShell, aFromShape);
 279     aBoundingBuilder.MakeSolid(aToSolid);
 280     aBoundingBuilder.Add(aToSolid, aToShell);
 281     aBoundingBuilder.MakeSolid(aFromSolid);
 282     aBoundingBuilder.Add(aFromSolid, aFromShell);
 283
 284     // Cutting with to plane.
 285     BRepAlgoAPI_Cut* aToCutBuilder = new BRepAlgoAPI_Cut(aResult, aToSolid);
 286     aToCutBuilder->Build();
 287     if(!aToCutBuilder->IsDone()) {
 288       return;
 289     }
 290     this->appendAlgo(std::shared_ptr<GeomAlgoAPI_MakeShape>(new GeomAlgoAPI_MakeShape(aToCutBuilder)));
 291     const TopTools_ListOfShape& aToShapes = aToCutBuilder->Modified(aToShape);
 292     for(TopTools_ListIteratorOfListOfShape anIt(aToShapes); anIt.More(); anIt.Next()) {
 293       GeomShapePtr aShape(new GeomAPI_Shape());
 294       aShape->setImpl(new TopoDS_Shape(anIt.Value()));
 295       this->addToShape(aShape);
 296     }
 297     aResult = aToCutBuilder->Shape();
 298
 299     // Cutting with from plane.
 300     BRepAlgoAPI_Cut* aFromCutBuilder = new BRepAlgoAPI_Cut(aResult, aFromSolid);
 301     aFromCutBuilder->Build();
 302     if(!aFromCutBuilder->IsDone()) {
 303       return;
 304     }
 305     this->appendAlgo(std::shared_ptr<GeomAlgoAPI_MakeShape>(new GeomAlgoAPI_MakeShape(aFromCutBuilder)));
 306     const TopTools_ListOfShape& aFromShapes = aFromCutBuilder->Modified(aFromShape);
 307     for(TopTools_ListIteratorOfListOfShape anIt(aFromShapes); anIt.More(); anIt.Next()) {
 308       GeomShapePtr aShape(new GeomAPI_Shape());
 309       aShape->setImpl(new TopoDS_Shape(anIt.Value()));
 310       this->addFromShape(aShape);
 311     }
 312     aResult = aFromCutBuilder->Shape();
 313
 314     TopExp_Explorer anExp(aResult, TopAbs_SOLID);
 315     if(!anExp.More()) {
 316       return;
 317     }
 318     if(aResult.ShapeType() == TopAbs_COMPOUND) {
 319       aResult = GeomAlgoAPI_DFLoader::refineResult(aResult);
 320     }
 321     if(aResult.ShapeType() == TopAbs_COMPOUND) {
 322       GeomShapePtr aCompound(new GeomAPI_Shape);
 323       aCompound->setImpl(new TopoDS_Shape(aResult));
 324       ListOfShape aCompSolids, aFreeSolids;
 325       GeomAlgoAPI_ShapeTools::combineShapes(aCompound, GeomAPI_Shape::COMPSOLID, aCompSolids, aFreeSolids);
 326       if(aCompSolids.size() == 1 && aFreeSolids.size() == 0) {
 327         aResult = aCompSolids.front()->impl<TopoDS_Shape>();
 328       } else if (aCompSolids.size() > 1 || (aCompSolids.size() >= 1 && aFreeSolids.size() >= 1)) {
 329         TopoDS_Compound aResultComp;
 330         TopoDS_Builder aBuilder;
 331         aBuilder.MakeCompound(aResultComp);
 332         for(ListOfShape::const_iterator anIter = aCompSolids.cbegin(); anIter != aCompSolids.cend(); anIter++) {
 333           aBuilder.Add(aResultComp, (*anIter)->impl<TopoDS_Shape>());
 334         }
 335         for(ListOfShape::const_iterator anIter = aFreeSolids.cbegin(); anIter != aFreeSolids.cend(); anIter++) {
 336           aBuilder.Add(aResultComp, (*anIter)->impl<TopoDS_Shape>());
 337         }
 338         aResult = aResultComp;
 339       }
 340     }
 341   }
 342
 343   // Setting result.
 344   if(aResult.IsNull()) {
 345     return;
 346   }
 347   GeomShapePtr aShape(new GeomAPI_Shape());
 348   aShape->setImpl(new TopoDS_Shape(aResult));
 349   this->setShape(aShape);
 350   this->setDone(true);
 351 }