src/ModelGeomAlgo/ModelGeomAlgo_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 "ModelGeomAlgo_Shape.h"
  23
  24 #include <ModelAPI_AttributeSelection.h>
  25 #include <ModelAPI_CompositeFeature.h>
  26 #include <ModelAPI_Feature.h>
  27 #include <ModelAPI_Result.h>
  28 #include <ModelAPI_ResultBody.h>
  29 #include <ModelAPI_ResultConstruction.h>
  30
  31 #include <GeomAPI_Circ.h>
  32 #include <GeomAPI_Ellipse.h>
  33 #include <GeomAPI_PlanarEdges.h>
  34 #include <GeomAPI_Pnt.h>
  35
  36
  37 #ifdef WIN32
  38 #pragma warning(disable : 4996) // for sprintf
  39 #endif
  40
  41 namespace ModelGeomAlgo_Shape
  42 {
  43   void shapesOfType(const FeaturePtr& theFeature,
  44                     const GeomAPI_Shape::ShapeType& theType,
  45                     std::set<ResultPtr>& theShapeResults)
  46   {
  47     theShapeResults.clear();
  48     std::list<ResultPtr> aResults = theFeature->results();
  49     std::list<ResultPtr>::const_iterator aRIter = aResults.cbegin();
  50     for (; aRIter != aResults.cend(); aRIter++) {
  51       ResultPtr aResult = *aRIter;
  52       GeomShapePtr aShape = aResult->shape();
  53       if (aShape.get() && aShape->shapeType() == theType)
  54         theShapeResults.insert(aResult);
  55     }
  56   }
  57
  58   // Check the point is within shape's bounding box
  59   static bool isPointWithinBB(const GeomPointPtr& thePoint,
  60                               const GeomShapePtr& theShape,
  61                               const double theTolerance)
  62   {
  63     double aXMin, aXMax, aYMin, aYMax, aZMin, aZMax;
  64     return theShape->computeSize(aXMin, aYMin, aZMin, aXMax, aYMax, aZMax) &&
  65            thePoint->x() >= aXMin - theTolerance && thePoint->x() <= aXMax + theTolerance &&
  66            thePoint->y() >= aYMin - theTolerance && thePoint->y() <= aYMax + theTolerance &&
  67            thePoint->z() >= aZMin - theTolerance && thePoint->z() <= aZMax + theTolerance;
  68   }
  69
  70   // Select sub-shape of the given type, which contains the given point
  71   static std::list<GeomShapePtr> findSubShape(const GeomShapePtr& theShape,
  72                                               const GeomAPI_Shape::ShapeType& theType,
  73                                               const GeomPointPtr& thePoint,
  74                                               const double theTolerance)
  75   {
  76     std::list<GeomShapePtr> aFoundSubs;
  77     std::list<GeomShapePtr> aSubs = theShape->subShapes(theType);
  78     for (std::list<GeomShapePtr>::const_iterator aSubIt = aSubs.begin();
  79          aSubIt != aSubs.end(); ++aSubIt) {
  80       double aTol = (*aSubIt)->tolerance();
  81       if (theTolerance > aTol)
  82         aTol = theTolerance;
  83       GeomPointPtr aMiddlePoint = (*aSubIt)->middlePoint();
  84       if (aMiddlePoint && aMiddlePoint->distance(thePoint) < aTol)
  85         aFoundSubs.push_back(*aSubIt);
  86     }
  87     return aFoundSubs;
  88   }
  89
  90   // Find circular/elliptical edge, which center/focus coincide with the given point
  91   static GeomShapePtr findEdgeByCenter(const GeomShapePtr& theBaseShape,
  92                                        const GeomPointPtr& theCenter,
  93                                        const double theTolerance,
  94                                        int& theCenterType)
  95   {
  96     theCenterType = (int)ModelAPI_AttributeSelection::NOT_CENTER;
  97     std::list<GeomShapePtr> anEdges = theBaseShape->subShapes(GeomAPI_Shape::EDGE);
  98     for (std::list<GeomShapePtr>::const_iterator anIt = anEdges.begin();
  99          anIt != anEdges.end(); ++anIt) {
 100       GeomEdgePtr anEdge = (*anIt)->edge();
 101       if (!anEdge)
 102         continue;
 103
 104       if (anEdge->isCircle()) {
 105         GeomCirclePtr aCircle = anEdge->circle();
 106         if (aCircle->center()->distance(theCenter) < theTolerance) {
 107           theCenterType = (int)ModelAPI_AttributeSelection::CIRCLE_CENTER;
 108           return *anIt;
 109         }
 110       }
 111       else if (anEdge->isEllipse()) {
 112         GeomEllipsePtr anEllipse = anEdge->ellipse();
 113         if (anEllipse->firstFocus()->distance(theCenter) < theTolerance)
 114           theCenterType = (int)ModelAPI_AttributeSelection::ELLIPSE_FIRST_FOCUS;
 115         else if (anEllipse->secondFocus()->distance(theCenter) < theTolerance)
 116           theCenterType = (int)ModelAPI_AttributeSelection::ELLIPSE_SECOND_FOCUS;
 117
 118         if (theCenterType != (int)ModelAPI_AttributeSelection::NOT_CENTER)
 119           return *anIt;
 120       }
 121     }
 122
 123     // not found
 124     return GeomShapePtr();
 125   }
 126
 127   static void appendSubshapeOfResult(std::list<SubshapeOfResult>& theList,
 128       const ResultPtr& theResult,
 129       const GeomShapePtr& theSubshape,
 130       int theCenterType = (int)ModelAPI_AttributeSelection::NOT_CENTER)
 131   {
 132     SubshapeOfResult aSR;
 133     aSR.myResult = theResult;
 134     aSR.mySubshape = theSubshape;
 135     aSR.myCenterType = theCenterType;
 136     // compound subshapes from other compounds should be processed as whole results
 137     if (aSR.mySubshape && aSR.mySubshape->shapeType() == GeomAPI_Shape::COMPOUND &&
 138         !theResult->shape()->isEqual(theSubshape)) {
 139       ResultBodyPtr aResult = std::dynamic_pointer_cast<ModelAPI_ResultBody>(theResult);
 140       for (int i = 0; aResult && i < aResult->numberOfSubs(); ++i) {
 141         ResultBodyPtr aSub = aResult->subResult(i);
 142         if (aSub->shape()->isEqual(theSubshape)) {
 143           aSR.myResult = aSub;
 144           aSR.mySubshape = GeomShapePtr();
 145           break;
 146         }
 147       }
 148     }
 149     theList.push_back(aSR);
 150   }
 151
 152   static void appendSubshapeOfResult(std::list<SubshapeOfResult>& theList,
 153       const ResultPtr& theResult,
 154       const std::list<GeomShapePtr>& theSubshape)
 155   {
 156     for (std::list<GeomShapePtr>::const_iterator anIt = theSubshape.begin();
 157          anIt != theSubshape.end(); ++anIt)
 158       appendSubshapeOfResult(theList, theResult, *anIt);
 159   }
 160
 161   static bool findSubshapeInCompsolid(const ResultBodyPtr& theCompsolid,
 162                                       const std::shared_ptr<GeomAPI_Pnt>& thePoint,
 163                                       const GeomAPI_Shape::ShapeType& theShapeType,
 164                                       const double theTolerance,
 165                                       std::list<SubshapeOfResult>& theSelected)
 166   {
 167     bool isSubshapeFound = false;
 168     int aNbSolids = theCompsolid->numberOfSubs();
 169     for (int i = 0; i < aNbSolids; ++i) {
 170       ResultPtr aSubResult = theCompsolid->subResult(i);
 171
 172       // process subs of compsolid
 173       ResultBodyPtr aSubCompSolid = std::dynamic_pointer_cast<ModelAPI_ResultBody>(aSubResult);
 174       if (theShapeType != GeomAPI_Shape::COMPSOLID &&
 175           aSubCompSolid && aSubCompSolid->numberOfSubs() > 0) {
 176         isSubshapeFound = findSubshapeInCompsolid(aSubCompSolid,
 177             thePoint, theShapeType, theTolerance, theSelected);
 178       }
 179       else {
 180         GeomShapePtr aSubSolid = aSubResult->shape();
 181         if (aSubSolid && isPointWithinBB(thePoint, aSubSolid, theTolerance)) {
 182           std::list<GeomShapePtr> aSubshapes =
 183               findSubShape(aSubSolid, theShapeType, thePoint, theTolerance);
 184           if (!aSubshapes.empty()) {
 185             appendSubshapeOfResult(theSelected, aSubResult, aSubshapes);
 186             isSubshapeFound = true;
 187           }
 188         }
 189       }
 190     }
 191     return isSubshapeFound;
 192   }
 193
 194   bool findSubshapeByPoint(const std::shared_ptr<ModelAPI_Feature>& theFeature,
 195                            const std::shared_ptr<GeomAPI_Pnt>& thePoint,
 196                            const GeomAPI_Shape::ShapeType& theShapeType,
 197                            std::list<SubshapeOfResult>& theSelected)
 198   {
 199     static const double TOLERANCE = 1.e-6;
 200
 201     theSelected.clear();
 202
 203     const std::list<ResultPtr>& aResults = theFeature->results();
 204     for (std::list<ResultPtr>::const_iterator aResIt = aResults.begin();
 205          aResIt != aResults.end(); ++aResIt) {
 206       bool isSubshapeFound = false;
 207       GeomShapePtr aCurShape = (*aResIt)->shape();
 208       // first of all, check the point is within bounding box of the result
 209       if (!aCurShape || !isPointWithinBB(thePoint, aCurShape, TOLERANCE))
 210         continue;
 211       // now, process all sub-shapes of the given type and check their inner points,
 212       // but skip the case the selected type is COMPOUND and the shape is a list of sketch edges
 213       // (it will be processed later)
 214       std::shared_ptr<GeomAPI_PlanarEdges> aSketchEdges =
 215           std::dynamic_pointer_cast<GeomAPI_PlanarEdges>(aCurShape);
 216       if (theShapeType != GeomAPI_Shape::COMPOUND || !aSketchEdges) {
 217         ResultBodyPtr aCompSolid = std::dynamic_pointer_cast<ModelAPI_ResultBody>(*aResIt);
 218         if (aCompSolid) {
 219           isSubshapeFound = findSubshapeInCompsolid(aCompSolid,
 220               thePoint, theShapeType, TOLERANCE, theSelected);
 221         }
 222
 223         if (!isSubshapeFound) {
 224           std::list<GeomShapePtr> aSubshapes =
 225               findSubShape(aCurShape, theShapeType, thePoint, TOLERANCE);
 226           if (!aSubshapes.empty()) {
 227             appendSubshapeOfResult(theSelected, *aResIt, aSubshapes);
 228             isSubshapeFound = true;
 229           }
 230         }
 231       }
 232       if (isSubshapeFound)
 233         continue;
 234
 235       // special case for ResultConstruction if the FACE is selected
 236       ResultConstructionPtr aResConstr =
 237           std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(*aResIt);
 238       if (aResConstr && theShapeType >= GeomAPI_Shape::FACE) {
 239         int aNbFaces = aResConstr->facesNum();
 240         for (int aFaceInd = 0; aFaceInd < aNbFaces; ++aFaceInd) {
 241           GeomFacePtr aCurFace = aResConstr->face(aFaceInd);
 242           // check the point is within bounding box of the face
 243           if (!isPointWithinBB(thePoint, aCurFace, TOLERANCE))
 244             continue;
 245           std::list<GeomShapePtr> aSubshapes =
 246               findSubShape(aCurFace, theShapeType, thePoint, TOLERANCE);
 247           if (!aSubshapes.empty()) {
 248             appendSubshapeOfResult(theSelected, *aResIt, aSubshapes);
 249             isSubshapeFound = true;
 250           }
 251         }
 252       }
 253       if (isSubshapeFound)
 254         continue;
 255
 256       // next special case: the full sketch is selected
 257       // the selection type is a COMPOUND
 258       if (aSketchEdges && theShapeType == GeomAPI_Shape::COMPOUND &&
 259           aSketchEdges->middlePoint()->distance(thePoint) < TOLERANCE) {
 260         // select whole result
 261         appendSubshapeOfResult(theSelected, *aResIt, GeomShapePtr());
 262         continue;
 263       }
 264
 265       // another special case: the center of circle or the focus of ellipse is selected;
 266       // return the corresponding edge and a status of the center
 267       if (theShapeType == GeomAPI_Shape::VERTEX) {
 268         int aCenterType;
 269         GeomShapePtr aSubshape = findEdgeByCenter(aCurShape, thePoint, TOLERANCE, aCenterType);
 270         if (aSubshape) {
 271           appendSubshapeOfResult(theSelected, *aResIt, aSubshape, aCenterType);
 272           continue;
 273         }
 274       }
 275     }
 276
 277     // one more special case: the selected entity is a separated sketch point
 278     // or an auxiliary sketch edge; they are not included into the sketch result;
 279     // thus, it is necessary to pass through the sketch sub-features and find selected.
 280     if (theSelected.empty() && !aResults.empty() &&
 281        (theShapeType == GeomAPI_Shape::VERTEX || theShapeType == GeomAPI_Shape::EDGE)) {
 282       CompositeFeaturePtr aCF = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 283       std::shared_ptr<GeomAPI_PlanarEdges> aSketchEdges =
 284           std::dynamic_pointer_cast<GeomAPI_PlanarEdges>(aResults.front()->shape());
 285
 286       if (aSketchEdges && aCF) {
 287         int aNbSubs = aCF->numberOfSubs();
 288         for (int aSubInd = 0; aSubInd < aNbSubs; ++aSubInd) {
 289           FeaturePtr aSub = aCF->subFeature(aSubInd);
 290           const std::list<ResultPtr>& aSubResults = aSub->results();
 291           for (std::list<ResultPtr>::const_iterator aSRIt = aSubResults.begin();
 292                aSRIt != aSubResults.end(); ++aSRIt) {
 293             GeomShapePtr aCurShape = (*aSRIt)->shape();
 294             std::list<GeomShapePtr> aSubshapes =
 295                 findSubShape(aCurShape, theShapeType, thePoint, TOLERANCE);
 296             if (!aSubshapes.empty()) {
 297               appendSubshapeOfResult(theSelected, aResults.front(), aSubshapes);
 298               break;
 299             }
 300           }
 301         }
 302       }
 303     }
 304
 305     return !theSelected.empty();
 306   }
 307 } // namespace ModelGeomAlgo_Shape