src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:    SketchPlugin_ConstraintFillet.cpp
   4 // Created: 19 Mar 2015
   5 // Author:  Artem ZHIDKOV
   6
   7 #include "SketchPlugin_ConstraintFillet.h"
   8
   9 #include <GeomAPI_Circ2d.h>
  10 #include <GeomAPI_Dir2d.h>
  11 #include <GeomAPI_Lin2d.h>
  12 #include <GeomAPI_Pnt2d.h>
  13 #include <GeomAPI_XY.h>
  14 #include <GeomDataAPI_Point2D.h>
  15 #include <ModelAPI_AttributeDouble.h>
  16 #include <ModelAPI_AttributeRefList.h>
  17 #include <ModelAPI_AttributeRefAttrList.h>
  18 #include <ModelAPI_Data.h>
  19 #include <ModelAPI_Events.h>
  20 #include <ModelAPI_Session.h>
  21 #include <ModelAPI_Validator.h>
  22
  23 #include <SketchPlugin_Arc.h>
  24 #include <SketchPlugin_Line.h>
  25 #include <SketchPlugin_Point.h>
  26 #include <SketchPlugin_Sketch.h>
  27 #include <SketchPlugin_ConstraintCoincidence.h>
  28 #include <SketchPlugin_ConstraintTangent.h>
  29 #include <SketchPlugin_ConstraintRadius.h>
  30 #include <SketchPlugin_Tools.h>
  31
  32 #include <Events_Loop.h>
  33
  34 #include <math.h>
  35
  36 const double tolerance = 1.e-7;
  37 const double paramTolerance = 1.e-4;
  38
  39 /// \brief Attract specified point on theNewArc to the attribute of theFeature
  40 static void recalculateAttributes(FeaturePtr theNewArc, const std::string& theNewArcAttribute,
  41   FeaturePtr theFeature, const std::string& theFeatureAttribute);
  42
  43 /// \brief Calculates center of fillet arc and coordinates of tangency points
  44 static void calculateFilletCenter(FeaturePtr theFeatureA, FeaturePtr theFeatureB,
  45                                   double theRadius, bool theNotInversed[2],
  46                                   std::shared_ptr<GeomAPI_XY>& theCenter,
  47                                   std::shared_ptr<GeomAPI_XY>& theTangentA,
  48                                   std::shared_ptr<GeomAPI_XY>& theTangentB);
  49
  50 /// Get point on 1/3 length of edge from fillet point
  51 static void getPointOnEdge(const FeaturePtr theFeature,
  52                            const std::shared_ptr<GeomAPI_Pnt2d> theFilletPoint,
  53                            std::shared_ptr<GeomAPI_Pnt2d>& thePoint);
  54
  55 /// Get distance from point to feature
  56 static double getProjectionDistance(const FeaturePtr theFeature,
  57                              const std::shared_ptr<GeomAPI_Pnt2d> thePoint);
  58
  59 /// Get coincide edges for fillet
  60 static std::set<FeaturePtr> getCoincides(const FeaturePtr& theConstraintCoincidence);
  61
  62 SketchPlugin_ConstraintFillet::SketchPlugin_ConstraintFillet()
  63 : myListOfPointsChangedInCode(false),
  64   myRadiusChangedByUser(false),
  65   myRadiusChangedInCode(false),
  66   myRadiusInitialized(false)
  67 {
  68 }
  69
  70 void SketchPlugin_ConstraintFillet::initAttributes()
  71 {
  72   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  73   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttrList::typeId());
  74 }
  75
  76 void SketchPlugin_ConstraintFillet::execute()
  77 {
  78   std::shared_ptr<ModelAPI_Data> aData = data();
  79
  80   // Check the base objects are initialized.
  81   AttributeRefAttrListPtr aPointsRefList = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(
  82     aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
  83   if(!aPointsRefList->isInitialized()) {
  84     setError("Error: List of points is not initialized.");
  85     return;
  86   }
  87
  88   // Get fillet radius.
  89   double aFilletRadius = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  90     aData->attribute(SketchPlugin_Constraint::VALUE()))->value();
  91
  92   // Wait all constraints being created, then send update events
  93   static Events_ID anUpdateEvent = Events_Loop::eventByName(EVENT_OBJECT_UPDATED);
  94   bool isUpdateFlushed = Events_Loop::loop()->isFlushed(anUpdateEvent);
  95   if (isUpdateFlushed)
  96     Events_Loop::loop()->setFlushed(anUpdateEvent, false);
  97
  98   for(std::set<AttributePtr>::iterator aPointsIter = myNewPoints.begin();
  99       aPointsIter != myNewPoints.end();
 100       ++aPointsIter) {
 101     AttributePtr aPointAttr = *aPointsIter;
 102     std::shared_ptr<GeomDataAPI_Point2D> aFilletPoint2d = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttr);
 103     if(!aFilletPoint2d.get()) {
 104       setError("Error: One of the selected points is empty.");
 105       return;
 106     }
 107     std::shared_ptr<GeomAPI_Pnt2d> aFilletPnt2d = aFilletPoint2d->pnt();
 108
 109     // Obtain base lines for fillet.
 110     bool anIsNeedNewObjects = true;
 111     FilletFeatures aFilletFeatures;
 112     std::map<AttributePtr, FilletFeatures>::iterator aPrevPointsIter = myPointFeaturesMap.find(aPointAttr);
 113     if(aPrevPointsIter != myPointFeaturesMap.end()) {
 114       anIsNeedNewObjects = false;
 115       aFilletFeatures = aPrevPointsIter->second;
 116     }
 117     FeaturePtr aBaseEdgeA, aBaseEdgeB;
 118     if(!anIsNeedNewObjects) {
 119       aBaseEdgeA = aFilletFeatures.baseEdgesState.front().first;
 120       aBaseEdgeB = aFilletFeatures.baseEdgesState.back().first;
 121     } else {
 122       // Obtain constraint coincidence for the fillet point.
 123       FeaturePtr aConstraintCoincidence;
 124       const std::set<AttributePtr>& aRefsList = aFilletPoint2d->owner()->data()->refsToMe();
 125       for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin(); anIt != aRefsList.cend(); ++anIt) {
 126         std::shared_ptr<ModelAPI_Attribute> anAttr = (*anIt);
 127         FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 128         if(aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 129           AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 130             aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 131           AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 132             aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 133           if(anAttrRefA.get() && !anAttrRefA->isObject()) {
 134             AttributePtr anAttrA = anAttrRefA->attr();
 135             if(aFilletPoint2d == anAttrA) {
 136               aConstraintCoincidence = aConstrFeature;
 137               break;
 138             }
 139           }
 140           if(anAttrRefB.get() && !anAttrRefB->isObject()) {
 141             AttributePtr anAttrB = anAttrRefB->attr();
 142             if(aFilletPoint2d == anAttrB) {
 143               aConstraintCoincidence = aConstrFeature;
 144               break;
 145             }
 146           }
 147         }
 148       }
 149
 150       if(!aConstraintCoincidence.get()) {
 151         setError("Error: No coincident edges at one of the selected points.");
 152         return;
 153       }
 154
 155       // Get coincide edges.
 156       std::set<FeaturePtr> aCoincides = getCoincides(aConstraintCoincidence);
 157       if(aCoincides.size() != 2) {
 158         setError("Error: One of the selected points does not have two suitable edges for fillet.");
 159         return;
 160       }
 161
 162       std::set<FeaturePtr>::iterator aLinesIt = aCoincides.begin();
 163       aBaseEdgeA = *aLinesIt++;
 164       aBaseEdgeB = *aLinesIt;
 165
 166       std::pair<FeaturePtr, bool> aBasePairA = std::make_pair(aBaseEdgeA, aBaseEdgeA->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value());
 167       std::pair<FeaturePtr, bool> aBasePairB = std::make_pair(aBaseEdgeB, aBaseEdgeB->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value());
 168       aFilletFeatures.baseEdgesState.push_back(aBasePairA);
 169       aFilletFeatures.baseEdgesState.push_back(aBasePairB);
 170     }
 171
 172     if(!aBaseEdgeA.get() || !aBaseEdgeB.get()) {
 173       setError("Error: One of the base edges is empty.");
 174       return;
 175     }
 176
 177     // Create new edges and arc if needed.
 178     FeaturePtr aResultEdgeA, aResultEdgeB, aResultArc;
 179     if(!anIsNeedNewObjects) {
 180       // Obtain features from the list.
 181       std::list<FeaturePtr>::iterator aResultEdgesIt = aFilletFeatures.resultEdges.begin();
 182       aResultEdgeA = *aResultEdgesIt++;
 183       aResultEdgeB = *aResultEdgesIt++;
 184       aResultArc = *aResultEdgesIt;
 185     } else {
 186       // Copy edges and create arc.
 187       aResultEdgeA = SketchPlugin_Sketch::addUniqueNamedCopiedFeature(aBaseEdgeA, sketch());
 188       aResultEdgeA->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(false);
 189       aResultEdgeB = SketchPlugin_Sketch::addUniqueNamedCopiedFeature(aBaseEdgeB, sketch());
 190       aResultEdgeB->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(false);
 191       aResultArc = sketch()->addFeature(SketchPlugin_Arc::ID());
 192
 193       aFilletFeatures.resultEdges.push_back(aResultEdgeA);
 194       aFilletFeatures.resultEdges.push_back(aResultEdgeB);
 195       aFilletFeatures.resultEdges.push_back(aResultArc);
 196     }
 197
 198     // Calculate arc attributes
 199     static const int aNbFeatures = 2;
 200     FeaturePtr aBaseFeatures[aNbFeatures] = {aBaseEdgeA, aBaseEdgeB};
 201     FeaturePtr aResultFeatures[aNbFeatures] = {aResultEdgeA, aResultEdgeB};
 202     std::shared_ptr<GeomAPI_Dir2d> aTangentDir[aNbFeatures]; // tangent directions of the features in coincident point
 203     bool isStart[aNbFeatures]; // indicates which point the features share
 204     std::shared_ptr<GeomAPI_Pnt2d> aStartEndPnt[aNbFeatures * 2]; // first pair of points relate to first feature, second pair -  to second
 205     std::string aFeatAttributes[aNbFeatures * 2]; // attributes of features
 206     for (int i = 0; i < aNbFeatures; i++) {
 207       std::string aStartAttr, aEndAttr;
 208       if (aResultFeatures[i]->getKind() == SketchPlugin_Line::ID()) {
 209         aStartAttr = SketchPlugin_Line::START_ID();
 210         aEndAttr = SketchPlugin_Line::END_ID();
 211       } else if (aResultFeatures[i]->getKind() == SketchPlugin_Arc::ID()) {
 212         aStartAttr = SketchPlugin_Arc::START_ID();
 213         aEndAttr = SketchPlugin_Arc::END_ID();
 214       } else { // wrong argument
 215         setError("Error: One of the points has wrong coincide feature");
 216         return;
 217       }
 218       aFeatAttributes[2*i] = aStartAttr;
 219       aStartEndPnt[2*i] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 220         aBaseFeatures[i]->attribute(aStartAttr))->pnt();
 221       aFeatAttributes[2*i+1] = aEndAttr;
 222       aStartEndPnt[2*i+1] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 223         aBaseFeatures[i]->attribute(aEndAttr))->pnt();
 224     }
 225     for (int aFeatInd = 0; aFeatInd < aNbFeatures; aFeatInd++) {
 226       for (int j = 0; j < 2; j++) // loop on start-end of each feature
 227         if (aStartEndPnt[aFeatInd * aNbFeatures + j]->distance(aFilletPnt2d) < 1.e-10) {
 228           isStart[aFeatInd] = (j==0);
 229           break;
 230         }
 231     }
 232     // tangent directions of the features
 233     for (int i = 0; i < aNbFeatures; i++) {
 234       std::shared_ptr<GeomAPI_XY> aDir;
 235       if (aResultFeatures[i]->getKind() == SketchPlugin_Line::ID()) {
 236         aDir = aStartEndPnt[2*i+1]->xy()->decreased(aStartEndPnt[2*i]->xy());
 237         if (!isStart[i])
 238           aDir = aDir->multiplied(-1.0);
 239       } else if (aResultFeatures[i]->getKind() == SketchPlugin_Arc::ID()) {
 240         std::shared_ptr<GeomAPI_Pnt2d> aCenterPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 241           aResultFeatures[i]->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt();
 242         aDir = isStart[i] ? aStartEndPnt[2*i]->xy() : aStartEndPnt[2*i+1]->xy();
 243         aDir = aDir->decreased(aCenterPoint->xy());
 244
 245         double x = aDir->x();
 246         double y = aDir->y();
 247         aDir->setX(-y);
 248         aDir->setY(x);
 249         if (isStart[i] == std::dynamic_pointer_cast<SketchPlugin_Arc>(aBaseFeatures[i])->isReversed())
 250           aDir = aDir->multiplied(-1.0);
 251       }
 252       aTangentDir[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(aDir));
 253     }
 254
 255     // By default, the start point of fillet arc is connected to FeatureA,
 256     // and the end point - to FeatureB. But when the angle between TangentDirA and
 257     // TangentDirB greater 180 degree, the sequaence of features need to be reversed.
 258     double cosBA = aTangentDir[0]->cross(aTangentDir[1]); // cos(B-A), where A and B - angles between corresponding tanget direction and the X axis
 259     bool isReversed = cosBA > 0.0;
 260
 261     // Calculate fillet arc parameters
 262     std::shared_ptr<GeomAPI_XY> aCenter, aTangentPntA, aTangentPntB;
 263     calculateFilletCenter(aBaseEdgeA, aBaseEdgeB, aFilletRadius, isStart, aCenter, aTangentPntA, aTangentPntB);
 264     if(!aCenter.get() || !aTangentPntA.get() || !aTangentPntB.get()) {
 265       setError("Can not create fillet with the specified parameters.");
 266       return;
 267     }
 268     // update features
 269     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 270       aResultEdgeA->attribute(aFeatAttributes[isStart[0] ? 0 : 1]))->setValue(aTangentPntA->x(), aTangentPntA->y());
 271     aResultEdgeA->execute();
 272     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 273       aResultEdgeB->attribute(aFeatAttributes[2 + (isStart[1] ? 0 : 1)]))->setValue(aTangentPntB->x(), aTangentPntB->y());
 274     aResultEdgeB->execute();
 275     // update fillet arc: make the arc correct for sure, so, it is not needed to process the "attribute updated"
 276     // by arc; moreover, it may cause cyclicity in hte mechanism of updater
 277     aResultArc->data()->blockSendAttributeUpdated(true);
 278     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 279       aResultArc->attribute(SketchPlugin_Arc::CENTER_ID()))->setValue(aCenter->x(), aCenter->y());
 280     if(isReversed) {
 281       std::shared_ptr<GeomAPI_XY> aTmp = aTangentPntA;
 282       aTangentPntA = aTangentPntB;
 283       aTangentPntB = aTmp;
 284     }
 285     std::shared_ptr<GeomDataAPI_Point2D> aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 286       aResultArc->attribute(SketchPlugin_Arc::START_ID()));
 287     std::shared_ptr<GeomDataAPI_Point2D> aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 288       aResultArc->attribute(SketchPlugin_Arc::END_ID()));
 289     if(aStartPoint->isInitialized() && aEndPoint->isInitialized() &&
 290       (aStartPoint->pnt()->xy()->distance(aTangentPntA) > tolerance ||
 291        aEndPoint->pnt()->xy()->distance(aTangentPntB) > tolerance)) {
 292       std::dynamic_pointer_cast<SketchPlugin_Arc>(aResultArc)->setReversed(false);
 293     }
 294     aStartPoint->setValue(aTangentPntA->x(), aTangentPntA->y());
 295     aEndPoint->setValue(aTangentPntB->x(), aTangentPntB->y());
 296     aResultArc->data()->blockSendAttributeUpdated(false);
 297     aResultArc->execute();
 298
 299     if(anIsNeedNewObjects) {
 300       // Create list of additional constraints:
 301       // 1. Coincidence of boundary points of features (copied lines/arcs) and fillet arc
 302       // 1.1. coincidence
 303       FeaturePtr aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 304       AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 305           aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 306       aRefAttr->setAttr(aResultArc->attribute(SketchPlugin_Arc::START_ID()));
 307       aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 308           aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 309       int aFeatInd = isReversed ? 1 : 0;
 310       int anAttrInd = (isReversed ? 2 : 0) + (isStart[isReversed ? 1 : 0] ? 0 : 1);
 311       aRefAttr->setAttr(aResultFeatures[aFeatInd]->attribute(aFeatAttributes[anAttrInd]));
 312       recalculateAttributes(aResultArc, SketchPlugin_Arc::START_ID(), aResultFeatures[aFeatInd], aFeatAttributes[anAttrInd]);
 313       aConstraint->execute();
 314       aFilletFeatures.resultConstraints.push_back(aConstraint);
 315       ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 316       // 1.2. coincidence
 317       aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 318       aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 319           aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 320       aRefAttr->setAttr(aResultArc->attribute(SketchPlugin_Arc::END_ID()));
 321       aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 322           aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 323       aFeatInd = isReversed ? 0 : 1;
 324       anAttrInd = (isReversed ? 0 : 2) + (isStart[isReversed ? 0 : 1] ? 0 : 1);
 325       aRefAttr->setAttr(aResultFeatures[aFeatInd]->attribute(aFeatAttributes[anAttrInd]));
 326       recalculateAttributes(aResultArc, SketchPlugin_Arc::END_ID(), aResultFeatures[aFeatInd], aFeatAttributes[anAttrInd]);
 327       aConstraint->execute();
 328       aFilletFeatures.resultConstraints.push_back(aConstraint);
 329       ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 330       // 2. Fillet arc radius
 331       //aConstraint = sketch()->addFeature(SketchPlugin_ConstraintRadius::ID());
 332       //aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 333       //    aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 334       //aRefAttr->setObject(aNewArc->lastResult());
 335       //std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
 336       //    aConstraint->attribute(SketchPlugin_Constraint::VALUE()))->setValue(aFilletRadius);
 337       //std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 338       //    aConstraint->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()))->setValue(
 339       //    isStart[0] ? aStartEndPnt[0] : aStartEndPnt[1]);
 340       //aConstraint->execute();
 341       //myProducedFeatures.push_back(aConstraint);
 342       //ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 343       // 3. Tangency of fillet arc and features
 344       for (int i = 0; i < aNbFeatures; i++) {
 345         aConstraint = sketch()->addFeature(SketchPlugin_ConstraintTangent::ID());
 346         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 347             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 348         aRefAttr->setObject(aResultArc->lastResult());
 349         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 350             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 351         bool isArc = aResultFeatures[i]->getKind() == SketchPlugin_Arc::ID();
 352         aRefAttr->setObject(isArc ? aResultFeatures[i]->lastResult() : aResultFeatures[i]->firstResult());
 353         aConstraint->execute();
 354         aFilletFeatures.resultConstraints.push_back(aConstraint);
 355         ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 356       }
 357       // 4. Coincidence of free boundaries of base and copied features
 358       for (int i = 0; i < aNbFeatures; i++) {
 359         anAttrInd = 2*i + (isStart[i] ? 1 : 0);
 360         aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 361         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 362             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 363         aRefAttr->setAttr(aBaseFeatures[i]->attribute(aFeatAttributes[anAttrInd]));
 364         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 365             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 366         aRefAttr->setAttr(aResultFeatures[i]->attribute(aFeatAttributes[anAttrInd]));
 367         aFilletFeatures.resultConstraints.push_back(aConstraint);
 368       }
 369       // 4.1. Additional tangency constraints when the fillet is based on arcs.
 370       //      It is used to verify the created arc will be placed on a source.
 371       for (int i = 0; i < aNbFeatures; ++i) {
 372         if (aResultFeatures[i]->getKind() != SketchPlugin_Arc::ID())
 373           continue;
 374         aConstraint = sketch()->addFeature(SketchPlugin_ConstraintTangent::ID());
 375         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 376             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 377         aRefAttr->setObject(aBaseFeatures[i]->lastResult());
 378         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 379             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 380         aRefAttr->setObject(aResultFeatures[i]->lastResult());
 381         aConstraint->execute();
 382         aFilletFeatures.resultConstraints.push_back(aConstraint);
 383         ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 384       }
 385       // 5. Tangent points should be placed on the base features
 386       for (int i = 0; i < aNbFeatures; i++) {
 387         anAttrInd = 2*i + (isStart[i] ? 0 : 1);
 388         aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 389         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 390             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 391         aRefAttr->setAttr(aResultFeatures[i]->attribute(aFeatAttributes[anAttrInd]));
 392         aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 393             aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 394         aRefAttr->setObject(aBaseFeatures[i]->lastResult());
 395         aFilletFeatures.resultConstraints.push_back(aConstraint);
 396       }
 397       // make base features auxiliary
 398       aBaseEdgeA->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(true);
 399       aBaseEdgeB->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(true);
 400
 401       // exchange the naming IDs of newly created and old line that become auxiliary
 402       sketch()->exchangeIDs(aBaseEdgeA, aResultEdgeA);
 403       sketch()->exchangeIDs(aBaseEdgeB, aResultEdgeB);
 404
 405       // store point and features in the map.
 406       myPointFeaturesMap[aPointAttr] = aFilletFeatures;
 407     } else {
 408       // Update radius value
 409       int aNbSubs = sketch()->numberOfSubs();
 410       FeaturePtr aSubFeature;
 411       for (int aSub = 0; aSub < aNbSubs; aSub++) {
 412         aSubFeature = sketch()->subFeature(aSub);
 413         if (aSubFeature->getKind() != SketchPlugin_ConstraintRadius::ID())
 414           continue;
 415         AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 416             aSubFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
 417         if (!aRefAttr || !aRefAttr->isObject())
 418           continue;
 419         FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
 420         if (aFeature == aResultArc) {
 421           AttributeDoublePtr aRadius = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
 422             aSubFeature->attribute(SketchPlugin_Constraint::VALUE()));
 423           aRadius->setValue(aFilletRadius);
 424           break;
 425         }
 426       }
 427     }
 428   }
 429
 430   // Send events to update the sub-features by the solver.
 431   if(isUpdateFlushed) {
 432     Events_Loop::loop()->setFlushed(anUpdateEvent, true);
 433   }
 434 }
 435
 436 void SketchPlugin_ConstraintFillet::attributeChanged(const std::string& theID)
 437 {
 438   if(theID == SketchPlugin_Constraint::ENTITY_A()) {
 439     if(myListOfPointsChangedInCode) {
 440       return;
 441     }
 442
 443     // Clear results.
 444     clearResults();
 445
 446     // Clear list of new points.
 447     myNewPoints.clear();
 448
 449     // Get list of points for fillets and current radius.
 450     AttributeRefAttrListPtr aRefListOfFilletPoints = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(
 451       data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
 452     AttributeDoublePtr aRadiusAttribute = real(VALUE());
 453     int aListSize = aRefListOfFilletPoints->size();
 454     if(aListSize == 0 && !myRadiusChangedByUser) {
 455       // If list is empty reset radius to zero (if it was not changed by user).
 456       myRadiusChangedInCode = true;
 457       aRadiusAttribute->setValue(0);
 458       myRadiusChangedInCode = false;
 459       return;
 460     }
 461
 462     // Iterate over points to get base lines an calculate radius for fillets.
 463     double aMinimumRadius = 0;
 464     std::list<std::pair<ObjectPtr, AttributePtr>> aSelectedPointsList = aRefListOfFilletPoints->list();
 465     std::list<std::pair<ObjectPtr, AttributePtr>>::iterator anIter = aSelectedPointsList.begin();
 466     std::set<AttributePtr> aPointsToSkeep;
 467     for(int anIndex = 0; anIndex < aListSize; anIndex++, anIter++) {
 468       AttributePtr aFilletPointAttr = (*anIter).second;
 469       std::shared_ptr<GeomDataAPI_Point2D> aFilletPoint2D =
 470         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aFilletPointAttr);
 471       if(!aFilletPoint2D.get()) {
 472         myNewPoints.clear();
 473         setError("Error: One of the selected points is invalid.");
 474         return;
 475       }
 476
 477       // If point or coincident point is already in list remove it from attribute.
 478       if(aPointsToSkeep.find(aFilletPointAttr) != aPointsToSkeep.end()) {
 479         myListOfPointsChangedInCode = true;
 480         aRefListOfFilletPoints->remove(aFilletPointAttr);
 481         myListOfPointsChangedInCode = false;
 482         continue;
 483       }
 484
 485       // Obtain constraint coincidence for the fillet point.
 486       FeaturePtr aConstraintCoincidence;
 487       const std::set<AttributePtr>& aRefsList = aFilletPointAttr->owner()->data()->refsToMe();
 488       for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin(); anIt != aRefsList.cend(); ++anIt) {
 489         std::shared_ptr<ModelAPI_Attribute> anAttr = (*anIt);
 490         FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 491         if(aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 492           AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 493             aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 494           AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 495             aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 496           if(anAttrRefA.get()) {
 497             AttributePtr anAttrA = anAttrRefA->attr();
 498             if(aFilletPointAttr == anAttrA) {
 499               aConstraintCoincidence = aConstrFeature;
 500               break;
 501             }
 502           }
 503           if(anAttrRefB.get()) {
 504             AttributePtr anAttrB = anAttrRefB->attr();
 505             if(aFilletPointAttr == anAttrB) {
 506               aConstraintCoincidence = aConstrFeature;
 507               break;
 508             }
 509           }
 510         }
 511       }
 512
 513       if(!aConstraintCoincidence.get()) {
 514         myNewPoints.clear();
 515         setError("Error: No coincident edges at one of the selected points.");
 516         return;
 517       }
 518
 519       // Get coincides from constraint.
 520       std::set<FeaturePtr> aCoincides;
 521
 522
 523       SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 524                                            SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 525                                            aCoincides);
 526       SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 527                                            SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 528                                            aCoincides);
 529
 530       // Remove points from set of coincides. Also get all attributes which is equal to this point to exclude it.
 531       std::shared_ptr<GeomAPI_Pnt2d> aFilletPnt2d = aFilletPoint2D->pnt();
 532       std::set<FeaturePtr> aNewSetOfCoincides;
 533       for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
 534         std::string aFeatureKind = (*anIt)->getKind();
 535         if(aFeatureKind == SketchPlugin_Point::ID()) {
 536           AttributePtr anAttr = (*anIt)->attribute(SketchPlugin_Point::COORD_ID());
 537           std::shared_ptr<GeomDataAPI_Point2D> aPoint2D =
 538             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr);
 539           if(aPoint2D.get() && aFilletPnt2d->isEqual(aPoint2D->pnt())) {
 540             aPointsToSkeep.insert(anAttr);
 541           }
 542         } else if(aFeatureKind == SketchPlugin_Line::ID()) {
 543           AttributePtr anAttrStart = (*anIt)->attribute(SketchPlugin_Line::START_ID());
 544           std::shared_ptr<GeomDataAPI_Point2D> aPointStart2D =
 545             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrStart);
 546           if(aPointStart2D.get() && aFilletPnt2d->isEqual(aPointStart2D->pnt())) {
 547             aPointsToSkeep.insert(anAttrStart);
 548           }
 549           AttributePtr anAttrEnd = (*anIt)->attribute(SketchPlugin_Line::END_ID());
 550           std::shared_ptr<GeomDataAPI_Point2D> aPointEnd2D =
 551             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrEnd);
 552           if(aPointEnd2D.get() && aFilletPnt2d->isEqual(aPointEnd2D->pnt())) {
 553             aPointsToSkeep.insert(anAttrEnd);
 554           }
 555           aNewSetOfCoincides.insert(*anIt);
 556         } else if(aFeatureKind == SketchPlugin_Arc::ID() ) {
 557           AttributePtr anAttrCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 558           std::shared_ptr<GeomDataAPI_Point2D> aPointCenter2D =
 559             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrCenter);
 560           if(aPointCenter2D.get() && aFilletPnt2d->isEqual(aPointCenter2D->pnt())) {
 561             aPointsToSkeep.insert(anAttrCenter);
 562             continue;
 563           }
 564           AttributePtr anAttrStart = (*anIt)->attribute(SketchPlugin_Arc::START_ID());
 565           std::shared_ptr<GeomDataAPI_Point2D> aPointStart2D =
 566             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrStart);
 567           if(aPointStart2D.get() && aFilletPnt2d->isEqual(aPointStart2D->pnt())) {
 568             aPointsToSkeep.insert(anAttrStart);
 569           }
 570           AttributePtr anAttrEnd = (*anIt)->attribute(SketchPlugin_Arc::END_ID());
 571           std::shared_ptr<GeomDataAPI_Point2D> aPointEnd2D =
 572             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrEnd);
 573           if(aPointEnd2D.get() && aFilletPnt2d->isEqual(aPointEnd2D->pnt())) {
 574             aPointsToSkeep.insert(anAttrEnd);
 575           }
 576           aNewSetOfCoincides.insert(*anIt);
 577         }
 578       }
 579       aCoincides = aNewSetOfCoincides;
 580
 581       // If we still have more than two coincides remove auxilary entities from set of coincides.
 582       if(aCoincides.size() > 2) {
 583         aNewSetOfCoincides.clear();
 584         for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
 585           if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 586             aNewSetOfCoincides.insert(*anIt);
 587           }
 588         }
 589         aCoincides = aNewSetOfCoincides;
 590       }
 591
 592       if(aCoincides.size() != 2) {
 593         myNewPoints.clear();
 594         setError("Error: One of the selected points does not have two suitable edges for fillet.");
 595         return;
 596       }
 597
 598       // Store base point for fillet.
 599       aPointsToSkeep.insert(aFilletPointAttr);
 600       myNewPoints.insert(aFilletPointAttr);
 601
 602       // Get base lines for fillet.
 603       FeaturePtr anOldFeatureA, anOldFeatureB;
 604       std::set<FeaturePtr>::iterator aLinesIt = aCoincides.begin();
 605       anOldFeatureA = *aLinesIt++;
 606       anOldFeatureB = *aLinesIt;
 607
 608       // Getting radius value if it was not changed by user.
 609       if(!myRadiusChangedByUser) {
 610         // Getting points located at 1/3 of edge length from fillet point.
 611         std::shared_ptr<GeomAPI_Pnt2d> aFilletPnt2d = aFilletPoint2D->pnt();
 612         std::shared_ptr<GeomAPI_Pnt2d> aPntA, aPntB;
 613         getPointOnEdge(anOldFeatureA, aFilletPnt2d, aPntA);
 614         getPointOnEdge(anOldFeatureB, aFilletPnt2d, aPntB);
 615
 616         /// Getting distances.
 617         double aDistanceA = getProjectionDistance(anOldFeatureB, aPntA);
 618         double aDistanceB = getProjectionDistance(anOldFeatureA, aPntB);
 619         double aRadius = aDistanceA < aDistanceB ? aDistanceA / 2.0 : aDistanceB / 2.0;
 620         aMinimumRadius = aMinimumRadius == 0 ? aRadius : aRadius < aMinimumRadius ? aRadius : aMinimumRadius;
 621       }
 622     }
 623
 624     // Set new default radius if it was not changed by user.
 625     if(!myRadiusChangedByUser) {
 626       myRadiusChangedInCode = true;
 627       aRadiusAttribute->setValue(aMinimumRadius);
 628       myRadiusChangedInCode = false;
 629     }
 630
 631   } else if(theID == SketchPlugin_Constraint::VALUE()) {
 632     if(myRadiusInitialized && !myRadiusChangedInCode) {
 633       myRadiusChangedByUser = true;
 634     }
 635     if(!myRadiusInitialized) {
 636       myRadiusInitialized = true;
 637     }
 638   }
 639 }
 640
 641 AISObjectPtr SketchPlugin_ConstraintFillet::getAISObject(AISObjectPtr thePrevious)
 642 {
 643   if (!sketch())
 644     return thePrevious;
 645
 646   AISObjectPtr anAIS = thePrevious;
 647   /// TODO: Equal constraint presentation should be put here
 648   return anAIS;
 649 }
 650
 651 bool SketchPlugin_ConstraintFillet::isMacro() const
 652 {
 653   return true;
 654 }
 655
 656 void SketchPlugin_ConstraintFillet::clearResults()
 657 {
 658   // Clear auxiliary flag on initial objects.
 659   for(std::map<AttributePtr, FilletFeatures>::iterator aPointsIter = myPointFeaturesMap.begin();
 660       aPointsIter != myPointFeaturesMap.end();) {
 661     const FilletFeatures& aFilletFeatures = aPointsIter->second;
 662     std::list<std::pair<FeaturePtr, bool>>::const_iterator aFeatureIt;
 663     for(aFeatureIt = aFilletFeatures.baseEdgesState.cbegin();
 664         aFeatureIt != aFilletFeatures.baseEdgesState.cend();
 665         ++aFeatureIt) {
 666       aFeatureIt->first->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(aFeatureIt->second);
 667     }
 668     ++aPointsIter;
 669   }
 670
 671   // And remove all produced features.
 672   DocumentPtr aDoc = sketch()->document();
 673   for(std::map<AttributePtr, FilletFeatures>::iterator aPointsIter = myPointFeaturesMap.begin();
 674       aPointsIter != myPointFeaturesMap.end();) {
 675     // Remove all produced constraints.
 676     const FilletFeatures& aFilletFeatures = aPointsIter->second;
 677     std::list<FeaturePtr>::const_iterator aFeatureIt;
 678     for(aFeatureIt = aFilletFeatures.resultConstraints.cbegin();
 679         aFeatureIt != aFilletFeatures.resultConstraints.cend();
 680         ++aFeatureIt) {
 681       aDoc->removeFeature(*aFeatureIt);
 682     }
 683
 684     // Remove all result edges.
 685     for(aFeatureIt = aFilletFeatures.resultEdges.cbegin();
 686         aFeatureIt != aFilletFeatures.resultEdges.cend();
 687         ++aFeatureIt) {
 688       aDoc->removeFeature(*aFeatureIt);
 689     }
 690
 691     // Remove point from map.
 692     myPointFeaturesMap.erase(aPointsIter++);
 693   }
 694 };
 695
 696
 697 // =========   Auxiliary functions   =================
 698 void recalculateAttributes(FeaturePtr theNewArc,  const std::string& theNewArcAttribute,
 699                            FeaturePtr theFeature, const std::string& theFeatureAttribute)
 700 {
 701   std::shared_ptr<GeomAPI_Pnt2d> anArcPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 702       theNewArc->attribute(theNewArcAttribute))->pnt();
 703   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 704       theFeature->attribute(theFeatureAttribute))->setValue(anArcPoint->x(), anArcPoint->y());
 705 }
 706
 707 /// \brief Find intersections of lines shifted along normal direction
 708 void possibleFilletCenterLineLine(
 709     std::shared_ptr<GeomAPI_XY> thePointA, std::shared_ptr<GeomAPI_Dir2d> theDirA,
 710     std::shared_ptr<GeomAPI_XY> thePointB, std::shared_ptr<GeomAPI_Dir2d> theDirB,
 711     double theRadius, std::list< std::shared_ptr<GeomAPI_XY> >& theCenters)
 712 {
 713   std::shared_ptr<GeomAPI_Dir2d> aDirAT(new GeomAPI_Dir2d(-theDirA->y(), theDirA->x()));
 714   std::shared_ptr<GeomAPI_Dir2d> aDirBT(new GeomAPI_Dir2d(-theDirB->y(), theDirB->x()));
 715   std::shared_ptr<GeomAPI_XY> aPntA, aPntB;
 716   double aDet = theDirA->cross(theDirB);
 717   for (double aStepA = -1.0; aStepA <= 1.0; aStepA += 2.0) {
 718     aPntA = thePointA->added(aDirAT->xy()->multiplied(aStepA * theRadius));
 719     for (double aStepB = -1.0; aStepB <= 1.0; aStepB += 2.0) {
 720       aPntB = thePointB->added(aDirBT->xy()->multiplied(aStepB * theRadius));
 721       double aVX = aDirAT->xy()->dot(aPntA);
 722       double aVY = aDirBT->xy()->dot(aPntB);
 723       std::shared_ptr<GeomAPI_XY> aPoint(new GeomAPI_XY(
 724           (theDirB->x() * aVX - theDirA->x() * aVY) / aDet,
 725           (theDirB->y() * aVX - theDirA->y() * aVY) / aDet));
 726       theCenters.push_back(aPoint);
 727     }
 728   }
 729 }
 730
 731 /// \brief Find intersections of line shifted along normal direction in both sides
 732 ///        and a circle with extended radius
 733 void possibleFilletCenterLineArc(
 734     std::shared_ptr<GeomAPI_XY> theStartLine, std::shared_ptr<GeomAPI_Dir2d> theDirLine,
 735     std::shared_ptr<GeomAPI_XY> theCenterArc, double theRadiusArc,
 736     double theRadius, std::list< std::shared_ptr<GeomAPI_XY> >& theCenters)
 737 {
 738   std::shared_ptr<GeomAPI_Dir2d> aDirT(new GeomAPI_Dir2d(-theDirLine->y(), theDirLine->x()));
 739   std::shared_ptr<GeomAPI_XY> aPnt;
 740   double aDirNorm2 = theDirLine->dot(theDirLine);
 741   double aRad = 0.0;
 742   double aDirX = theDirLine->x();
 743   double aDirX2 = theDirLine->x() * theDirLine->x();
 744   double aDirY2 = theDirLine->y() * theDirLine->y();
 745   double aDirXY = theDirLine->x() * theDirLine->y();
 746   for (double aStepA = -1.0; aStepA <= 1.0; aStepA += 2.0) {
 747     aPnt = theStartLine->added(aDirT->xy()->multiplied(aStepA * theRadius));
 748     double aCoeff = aDirT->xy()->dot(aPnt->decreased(theCenterArc));
 749     double aCoeff2 = aCoeff * aCoeff;
 750     for (double aStepB = -1.0; aStepB <= 1.0; aStepB += 2.0) {
 751       aRad = theRadiusArc + aStepB * theRadius;
 752       double aD = aRad * aRad * aDirNorm2 - aCoeff2;
 753       if (aD < 0.0)
 754         continue;
 755       double aDs = sqrt(aD);
 756       double x1 = theCenterArc->x() + (aCoeff * aDirT->x() - aDirT->y() * aDs) / aDirNorm2;
 757       double x2 = theCenterArc->x() + (aCoeff * aDirT->x() + aDirT->y() * aDs) / aDirNorm2;
 758       double y1 = (aDirX2 * aPnt->y() + aDirY2 * theCenterArc->y() -
 759           aDirXY * (aPnt->x() - theCenterArc->x()) - theDirLine->y() * aDs) / aDirNorm2;
 760       double y2 = (aDirX2 * aPnt->y() + aDirY2 * theCenterArc->y() -
 761           aDirXY * (aPnt->x() - theCenterArc->x()) + theDirLine->y() * aDs) / aDirNorm2;
 762
 763       std::shared_ptr<GeomAPI_XY> aPoint1(new GeomAPI_XY(x1, y1));
 764       theCenters.push_back(aPoint1);
 765       std::shared_ptr<GeomAPI_XY> aPoint2(new GeomAPI_XY(x2, y2));
 766       theCenters.push_back(aPoint2);
 767     }
 768   }
 769 }
 770
 771 /// \brief Find intersections of two circles with extended radii
 772 void possibleFilletCenterArcArc(
 773     std::shared_ptr<GeomAPI_XY> theCenterA, double theRadiusA,
 774     std::shared_ptr<GeomAPI_XY> theCenterB, double theRadiusB,
 775     double theRadius, std::list< std::shared_ptr<GeomAPI_XY> >& theCenters)
 776 {
 777   std::shared_ptr<GeomAPI_XY> aCenterDir = theCenterB->decreased(theCenterA);
 778   double aCenterDist2 = aCenterDir->dot(aCenterDir);
 779   double aCenterDist = sqrt(aCenterDist2);
 780
 781   double aRadA, aRadB;
 782   for (double aStepA = -1.0; aStepA <= 1.0; aStepA += 2.0) {
 783     aRadA = theRadiusA + aStepA * theRadius;
 784     for (double aStepB = -1.0; aStepB <= 1.0; aStepB += 2.0) {
 785       aRadB = theRadiusB + aStepB * theRadius;
 786       if (aRadA + aRadB < aCenterDist || fabs(aRadA - aRadB) > aCenterDist)
 787         continue; // there is no intersections
 788
 789       double aMedDist = (aRadA * aRadA - aRadB * aRadB + aCenterDist2) / (2.0 * aCenterDist);
 790       double aHeight = sqrt(aRadA * aRadA - aMedDist * aMedDist);
 791
 792       double x1 = theCenterA->x() + (aMedDist * aCenterDir->x() + aCenterDir->y() * aHeight) / aCenterDist;
 793       double y1 = theCenterA->y() + (aMedDist * aCenterDir->y() - aCenterDir->x() * aHeight) / aCenterDist;
 794
 795       double x2 = theCenterA->x() + (aMedDist * aCenterDir->x() - aCenterDir->y() * aHeight) / aCenterDist;
 796       double y2 = theCenterA->y() + (aMedDist * aCenterDir->y() + aCenterDir->x() * aHeight) / aCenterDist;
 797
 798       std::shared_ptr<GeomAPI_XY> aPoint1(new GeomAPI_XY(x1, y1));
 799       theCenters.push_back(aPoint1);
 800       std::shared_ptr<GeomAPI_XY> aPoint2(new GeomAPI_XY(x2, y2));
 801       theCenters.push_back(aPoint2);
 802     }
 803   }
 804 }
 805
 806 void calculateFilletCenter(FeaturePtr theFeatureA, FeaturePtr theFeatureB,
 807                            double theRadius, bool theNotInversed[2],
 808                            std::shared_ptr<GeomAPI_XY>& theCenter,
 809                            std::shared_ptr<GeomAPI_XY>& theTangentA,
 810                            std::shared_ptr<GeomAPI_XY>& theTangentB)
 811 {
 812   static const int aNbFeatures = 2;
 813   FeaturePtr aFeature[aNbFeatures] = {theFeatureA, theFeatureB};
 814   std::shared_ptr<GeomAPI_XY> aStart[aNbFeatures], aEnd[aNbFeatures], aCenter[aNbFeatures];
 815   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, aEndPoint;
 816
 817   for (int i = 0; i < aNbFeatures; i++) {
 818     if (aFeature[i]->getKind() == SketchPlugin_Line::ID()) {
 819       aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 820           aFeature[i]->attribute(SketchPlugin_Line::START_ID()));
 821       aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 822           aFeature[i]->attribute(SketchPlugin_Line::END_ID()));
 823     } else if (aFeature[i]->getKind() == SketchPlugin_Arc::ID()) {
 824       aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 825           aFeature[i]->attribute(SketchPlugin_Arc::START_ID()));
 826       aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 827           aFeature[i]->attribute(SketchPlugin_Arc::END_ID()));
 828       aCenter[i] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 829           aFeature[i]->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt()->xy();
 830     } else
 831       return;
 832     aStart[i] = std::shared_ptr<GeomAPI_XY>(theNotInversed[i] ?
 833         new GeomAPI_XY(aStartPoint->x(), aStartPoint->y()) :
 834         new GeomAPI_XY(aEndPoint->x(), aEndPoint->y()));
 835     aEnd[i] = std::shared_ptr<GeomAPI_XY>(theNotInversed[i] ?
 836         new GeomAPI_XY(aEndPoint->x(), aEndPoint->y()) :
 837         new GeomAPI_XY(aStartPoint->x(), aStartPoint->y()));
 838   }
 839
 840   if (theFeatureA->getKind() == SketchPlugin_Line::ID() &&
 841       theFeatureB->getKind() == SketchPlugin_Line::ID()) {
 842     std::shared_ptr<GeomAPI_Dir2d> aDir[2];
 843     std::shared_ptr<GeomAPI_Dir2d> aDirT[2];
 844     for (int i = 0; i < aNbFeatures; i++) {
 845       aDir[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(aEnd[i]->decreased(aStart[i])));
 846       aDirT[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(-aDir[i]->y(), aDir[i]->x()));
 847     }
 848
 849     // get and filter possible centers
 850     std::list< std::shared_ptr<GeomAPI_XY> > aSuspectCenters;
 851     possibleFilletCenterLineLine(aStart[0], aDir[0], aStart[1], aDir[1], theRadius, aSuspectCenters);
 852     double aDot = 0.0;
 853     std::list< std::shared_ptr<GeomAPI_XY> >::iterator anIt = aSuspectCenters.begin();
 854     for (; anIt != aSuspectCenters.end(); anIt++) {
 855       aDot = aDirT[0]->xy()->dot(aStart[0]->decreased(*anIt));
 856       theTangentA = (*anIt)->added(aDirT[0]->xy()->multiplied(aDot));
 857       if (theTangentA->decreased(aStart[0])->dot(aDir[0]->xy()) < 0.0)
 858         continue; // incorrect position
 859       aDot = aDirT[1]->xy()->dot(aStart[1]->decreased(*anIt));
 860       theTangentB = (*anIt)->added(aDirT[1]->xy()->multiplied(aDot));
 861       if (theTangentB->decreased(aStart[1])->dot(aDir[1]->xy()) < 0.0)
 862         continue; // incorrect position
 863       // the center is found, stop searching
 864       theCenter = *anIt;
 865       return;
 866     }
 867   } else if ((theFeatureA->getKind() == SketchPlugin_Arc::ID() &&
 868       theFeatureB->getKind() == SketchPlugin_Line::ID()) ||
 869       (theFeatureA->getKind() == SketchPlugin_Line::ID() &&
 870       theFeatureB->getKind() == SketchPlugin_Arc::ID())) {
 871     int aLineInd = theFeatureA->getKind() == SketchPlugin_Line::ID() ? 0 : 1;
 872     double anArcRadius = aStart[1-aLineInd]->distance(aCenter[1-aLineInd]);
 873     std::shared_ptr<GeomAPI_Dir2d> aDirLine = std::shared_ptr<GeomAPI_Dir2d>(
 874         new GeomAPI_Dir2d(aEnd[aLineInd]->decreased(aStart[aLineInd])));
 875     std::shared_ptr<GeomAPI_Dir2d> aDirT = std::shared_ptr<GeomAPI_Dir2d>(
 876         new GeomAPI_Dir2d(-aDirLine->y(), aDirLine->x()));
 877
 878     std::shared_ptr<GeomAPI_Dir2d> aStartArcDir = std::shared_ptr<GeomAPI_Dir2d>(
 879         new GeomAPI_Dir2d(aStart[1-aLineInd]->decreased(aCenter[1-aLineInd])));
 880     std::shared_ptr<GeomAPI_Dir2d> aEndArcDir = std::shared_ptr<GeomAPI_Dir2d>(
 881         new GeomAPI_Dir2d(aEnd[1-aLineInd]->decreased(aCenter[1-aLineInd])));
 882     double anArcAngle = aEndArcDir->angle(aStartArcDir);
 883
 884     // get possible centers and filter them
 885     std::list< std::shared_ptr<GeomAPI_XY> > aSuspectCenters;
 886     possibleFilletCenterLineArc(aStart[aLineInd], aDirLine, aCenter[1-aLineInd], anArcRadius, theRadius, aSuspectCenters);
 887     double aDot = 0.0;
 888     // the line is forward into the arc
 889     double innerArc = aCenter[1-aLineInd]->decreased(aStart[aLineInd])->dot(aDirLine->xy());
 890     std::shared_ptr<GeomAPI_XY> aLineTgPoint, anArcTgPoint;
 891     // The possible centers are ranged by their positions.
 892     // If the point is not satisfy one of criteria, the weight is decreased with penalty.
 893     int aBestWeight = 0;
 894     std::list< std::shared_ptr<GeomAPI_XY> >::iterator anIt = aSuspectCenters.begin();
 895     for (; anIt != aSuspectCenters.end(); anIt++) {
 896       int aWeight = 2;
 897       aDot = aDirT->xy()->dot(aStart[aLineInd]->decreased(*anIt));
 898       aLineTgPoint = (*anIt)->added(aDirT->xy()->multiplied(aDot));
 899       // Check the point is placed on the correct arc (penalty if false)
 900       if (aCenter[1-aLineInd]->distance(*anIt) * innerArc > anArcRadius * innerArc)
 901         aWeight -= 1;
 902       std::shared_ptr<GeomAPI_Dir2d> aCurDir = std::shared_ptr<GeomAPI_Dir2d>(
 903           new GeomAPI_Dir2d((*anIt)->decreased(aCenter[1-aLineInd])));
 904       double aCurAngle = aCurDir->angle(aStartArcDir);
 905       if (anArcAngle < 0.0) aCurAngle *= -1.0;
 906       if (aCurAngle < 0.0 || aCurAngle > fabs(anArcAngle))
 907         continue;
 908       if (aWeight > aBestWeight)
 909         aBestWeight = aWeight;
 910       else if (aWeight < aBestWeight ||
 911                aStart[aLineInd]->distance(*anIt) >
 912                aStart[aLineInd]->distance(theCenter)) // <-- take closer point
 913         continue;
 914       // the center is found, stop searching
 915       theCenter = *anIt;
 916       anArcTgPoint = aCenter[1-aLineInd]->added(aCurDir->xy()->multiplied(anArcRadius));
 917       if (theFeatureA->getKind() == SketchPlugin_Line::ID()) {
 918         theTangentA = aLineTgPoint;
 919         theTangentB = anArcTgPoint;
 920       } else {
 921         theTangentA = anArcTgPoint;
 922         theTangentB = aLineTgPoint;
 923       }
 924       //return;
 925     }
 926   } else if (theFeatureA->getKind() == SketchPlugin_Arc::ID() &&
 927       theFeatureB->getKind() == SketchPlugin_Arc::ID()) {
 928     double anArcRadius[aNbFeatures];
 929     double anArcAngle[aNbFeatures];
 930     std::shared_ptr<GeomAPI_Dir2d> aStartArcDir[aNbFeatures];
 931     for (int i = 0; i < aNbFeatures; i++) {
 932       anArcRadius[i] = aStart[i]->distance(aCenter[i]);
 933       aStartArcDir[i] = std::shared_ptr<GeomAPI_Dir2d>(
 934           new GeomAPI_Dir2d(aStart[i]->decreased(aCenter[i])));
 935       std::shared_ptr<GeomAPI_Dir2d> aEndArcDir = std::shared_ptr<GeomAPI_Dir2d>(
 936           new GeomAPI_Dir2d(aEnd[i]->decreased(aCenter[i])));
 937       anArcAngle[i] = aEndArcDir->angle(aStartArcDir[i]);
 938     }
 939
 940     // get and filter possible centers
 941     std::list< std::shared_ptr<GeomAPI_XY> > aSuspectCenters;
 942     possibleFilletCenterArcArc(aCenter[0], anArcRadius[0], aCenter[1], anArcRadius[1], theRadius, aSuspectCenters);
 943     double aDot = 0.0;
 944     std::shared_ptr<GeomAPI_XY> aLineTgPoint, anArcTgPoint;
 945     std::list< std::shared_ptr<GeomAPI_XY> >::iterator anIt = aSuspectCenters.begin();
 946     for (; anIt != aSuspectCenters.end(); anIt++) {
 947       std::shared_ptr<GeomAPI_Dir2d> aCurDir = std::shared_ptr<GeomAPI_Dir2d>(
 948           new GeomAPI_Dir2d((*anIt)->decreased(aCenter[0])));
 949       double aCurAngle = aCurDir->angle(aStartArcDir[0]);
 950       if (anArcAngle[0] < 0.0) aCurAngle *= -1.0;
 951       if (aCurAngle < 0.0 || aCurAngle > fabs(anArcAngle[0]))
 952         continue; // incorrect position
 953       theTangentA = aCenter[0]->added(aCurDir->xy()->multiplied(anArcRadius[0]));
 954
 955       aCurDir = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d((*anIt)->decreased(aCenter[1])));
 956       aCurAngle = aCurDir->angle(aStartArcDir[1]);
 957       if (anArcAngle[1] < 0.0) aCurAngle *= -1.0;
 958       if (aCurAngle < 0.0 || aCurAngle > fabs(anArcAngle[1]))
 959         continue; // incorrect position
 960       theTangentB = aCenter[1]->added(aCurDir->xy()->multiplied(anArcRadius[1]));
 961
 962       // the center is found, stop searching
 963       theCenter = *anIt;
 964       return;
 965     }
 966   }
 967 }
 968
 969 void getPointOnEdge(const FeaturePtr theFeature,
 970                     const std::shared_ptr<GeomAPI_Pnt2d> theFilletPoint,
 971                     std::shared_ptr<GeomAPI_Pnt2d>& thePoint) {
 972   if(theFeature->getKind() == SketchPlugin_Line::ID()) {
 973     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 974       theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
 975     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 976       theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
 977     if(aPntStart->distance(theFilletPoint) > 1.e-7) {
 978       aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 979         theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
 980       aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 981         theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
 982     }
 983     thePoint.reset( new GeomAPI_Pnt2d(aPntStart->xy()->added( aPntEnd->xy()->decreased( aPntStart->xy() )->multiplied(1.0 / 3.0) ) ) );
 984   } else {
 985     std::shared_ptr<GeomAPI_Pnt2d> aPntTemp;
 986     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 987       theFeature->attribute(SketchPlugin_Arc::START_ID()))->pnt();
 988     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 989       theFeature->attribute(SketchPlugin_Arc::END_ID()))->pnt();
 990     if(theFeature->attribute(SketchPlugin_Arc::INVERSED_ID())) {
 991       aPntTemp = aPntStart;
 992       aPntStart = aPntEnd;
 993       aPntEnd = aPntTemp;
 994     }
 995     std::shared_ptr<GeomAPI_Pnt2d> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 996       theFeature->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt();
 997     std::shared_ptr<GeomAPI_Circ2d> aCirc(new GeomAPI_Circ2d(aCenterPnt, aPntStart));
 998     double aStartParameter(0), anEndParameter(0);
 999     aCirc->parameter(aPntStart, paramTolerance, aStartParameter);
1000     aCirc->parameter(aPntEnd, paramTolerance, anEndParameter);
1001     if(aPntStart->distance(theFilletPoint) > tolerance) {
1002       double aTmpParameter = aStartParameter;
1003       aStartParameter = anEndParameter;
1004       anEndParameter = aTmpParameter;
1005     }
1006     double aPntParameter = aStartParameter + (anEndParameter - aStartParameter) / 3.0;
1007     aCirc->D0(aPntParameter, thePoint);
1008   }
1009 }
1010
1011 double getProjectionDistance(const FeaturePtr theFeature,
1012                              const std::shared_ptr<GeomAPI_Pnt2d> thePoint)
1013 {
1014   std::shared_ptr<GeomAPI_Pnt2d> aProjectPnt;
1015   if(theFeature->getKind() == SketchPlugin_Line::ID()) {
1016     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1017       theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
1018     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1019       theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
1020     std::shared_ptr<GeomAPI_Lin2d> aLin(new GeomAPI_Lin2d(aPntStart, aPntEnd));
1021     aProjectPnt = aLin->project(thePoint);
1022   } else {
1023     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1024       theFeature->attribute(SketchPlugin_Arc::START_ID()))->pnt();
1025     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1026       theFeature->attribute(SketchPlugin_Arc::END_ID()))->pnt();
1027     std::shared_ptr<GeomAPI_Pnt2d> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1028       theFeature->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt();
1029     std::shared_ptr<GeomAPI_Circ2d> aCirc(new GeomAPI_Circ2d(aCenterPnt, aPntStart));
1030     aProjectPnt = aCirc->project(thePoint);
1031   }
1032   if(aProjectPnt.get()) {
1033     return aProjectPnt->distance(thePoint);
1034   }
1035   return -1;
1036 }
1037
1038 std::set<FeaturePtr> getCoincides(const FeaturePtr& theConstraintCoincidence)
1039 {
1040   std::set<FeaturePtr> aCoincides;
1041
1042   std::shared_ptr<GeomAPI_Pnt2d> aFilletPnt = SketchPlugin_Tools::getCoincidencePoint(theConstraintCoincidence);
1043
1044   SketchPlugin_Tools::findCoincidences(theConstraintCoincidence,
1045                                        SketchPlugin_ConstraintCoincidence::ENTITY_A(),
1046                                        aCoincides);
1047   SketchPlugin_Tools::findCoincidences(theConstraintCoincidence,
1048                                        SketchPlugin_ConstraintCoincidence::ENTITY_B(),
1049                                        aCoincides);
1050
1051   // Remove points from set of coincides.
1052   std::set<FeaturePtr> aNewSetOfCoincides;
1053   for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
1054     if((*anIt)->getKind() == SketchPlugin_Line::ID()) {
1055       aNewSetOfCoincides.insert(*anIt);
1056     } else if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
1057       AttributePtr anAttrCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
1058       std::shared_ptr<GeomDataAPI_Point2D> aPointCenter2D =
1059         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrCenter);
1060       if(aPointCenter2D.get() && aFilletPnt->isEqual(aPointCenter2D->pnt())) {
1061         continue;
1062       }
1063       aNewSetOfCoincides.insert(*anIt);
1064     }
1065   }
1066   aCoincides = aNewSetOfCoincides;
1067
1068   // If we still have more than two coincides remove auxilary entities from set of coincides.
1069   if(aCoincides.size() > 2) {
1070     aNewSetOfCoincides.clear();
1071     for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
1072       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
1073         aNewSetOfCoincides.insert(*anIt);
1074       }
1075     }
1076     aCoincides = aNewSetOfCoincides;
1077   }
1078
1079   return aCoincides;
1080 }