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 anAttrStart = (*anIt)->attribute(SketchPlugin_Arc::START_ID());
 558           std::shared_ptr<GeomDataAPI_Point2D> aPointStart2D =
 559             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrStart);
 560           if(aPointStart2D.get() && aFilletPnt2d->isEqual(aPointStart2D->pnt())) {
 561             aPointsToSkeep.insert(anAttrStart);
 562           }
 563           AttributePtr anAttrEnd = (*anIt)->attribute(SketchPlugin_Arc::END_ID());
 564           std::shared_ptr<GeomDataAPI_Point2D> aPointEnd2D =
 565             std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttrEnd);
 566           if(aPointEnd2D.get() && aFilletPnt2d->isEqual(aPointEnd2D->pnt())) {
 567             aPointsToSkeep.insert(anAttrEnd);
 568           }
 569           aNewSetOfCoincides.insert(*anIt);
 570         }
 571       }
 572       aCoincides = aNewSetOfCoincides;
 573
 574       // If we still have more than two coincides remove auxilary entities from set of coincides.
 575       if(aCoincides.size() > 2) {
 576         aNewSetOfCoincides.clear();
 577         for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
 578           if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 579             aNewSetOfCoincides.insert(*anIt);
 580           }
 581         }
 582         aCoincides = aNewSetOfCoincides;
 583       }
 584
 585       if(aCoincides.size() != 2) {
 586         myNewPoints.clear();
 587         setError("Error: One of the selected points does not have two suitable edges for fillet.");
 588         return;
 589       }
 590
 591       // Store base point for fillet.
 592       aPointsToSkeep.insert(aFilletPointAttr);
 593       myNewPoints.insert(aFilletPointAttr);
 594
 595       // Get base lines for fillet.
 596       FeaturePtr anOldFeatureA, anOldFeatureB;
 597       std::set<FeaturePtr>::iterator aLinesIt = aCoincides.begin();
 598       anOldFeatureA = *aLinesIt++;
 599       anOldFeatureB = *aLinesIt;
 600
 601       // Getting radius value if it was not changed by user.
 602       if(!myRadiusChangedByUser) {
 603         // Getting points located at 1/3 of edge length from fillet point.
 604         std::shared_ptr<GeomAPI_Pnt2d> aFilletPnt2d = aFilletPoint2D->pnt();
 605         std::shared_ptr<GeomAPI_Pnt2d> aPntA, aPntB;
 606         getPointOnEdge(anOldFeatureA, aFilletPnt2d, aPntA);
 607         getPointOnEdge(anOldFeatureB, aFilletPnt2d, aPntB);
 608
 609         /// Getting distances.
 610         double aDistanceA = getProjectionDistance(anOldFeatureB, aPntA);
 611         double aDistanceB = getProjectionDistance(anOldFeatureA, aPntB);
 612         double aRadius = aDistanceA < aDistanceB ? aDistanceA / 2.0 : aDistanceB / 2.0;
 613         aMinimumRadius = aMinimumRadius == 0 ? aRadius : aRadius < aMinimumRadius ? aRadius : aMinimumRadius;
 614       }
 615     }
 616
 617     // Set new default radius if it was not changed by user.
 618     if(!myRadiusChangedByUser) {
 619       myRadiusChangedInCode = true;
 620       aRadiusAttribute->setValue(aMinimumRadius);
 621       myRadiusChangedInCode = false;
 622     }
 623
 624   } else if(theID == SketchPlugin_Constraint::VALUE()) {
 625     if(myRadiusInitialized && !myRadiusChangedInCode) {
 626       myRadiusChangedByUser = true;
 627     }
 628     if(!myRadiusInitialized) {
 629       myRadiusInitialized = true;
 630     }
 631   }
 632 }
 633
 634 AISObjectPtr SketchPlugin_ConstraintFillet::getAISObject(AISObjectPtr thePrevious)
 635 {
 636   if (!sketch())
 637     return thePrevious;
 638
 639   AISObjectPtr anAIS = thePrevious;
 640   /// TODO: Equal constraint presentation should be put here
 641   return anAIS;
 642 }
 643
 644 bool SketchPlugin_ConstraintFillet::isMacro() const
 645 {
 646   return true;
 647 }
 648
 649 void SketchPlugin_ConstraintFillet::clearResults()
 650 {
 651   // Clear auxiliary flag on initial objects.
 652   for(std::map<AttributePtr, FilletFeatures>::iterator aPointsIter = myPointFeaturesMap.begin();
 653       aPointsIter != myPointFeaturesMap.end();) {
 654     const FilletFeatures& aFilletFeatures = aPointsIter->second;
 655     std::list<std::pair<FeaturePtr, bool>>::const_iterator aFeatureIt;
 656     for(aFeatureIt = aFilletFeatures.baseEdgesState.cbegin();
 657         aFeatureIt != aFilletFeatures.baseEdgesState.cend();
 658         ++aFeatureIt) {
 659       aFeatureIt->first->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(aFeatureIt->second);
 660     }
 661     ++aPointsIter;
 662   }
 663
 664   // And remove all produced features.
 665   DocumentPtr aDoc = sketch()->document();
 666   for(std::map<AttributePtr, FilletFeatures>::iterator aPointsIter = myPointFeaturesMap.begin();
 667       aPointsIter != myPointFeaturesMap.end();) {
 668     // Remove all produced constraints.
 669     const FilletFeatures& aFilletFeatures = aPointsIter->second;
 670     std::list<FeaturePtr>::const_iterator aFeatureIt;
 671     for(aFeatureIt = aFilletFeatures.resultConstraints.cbegin();
 672         aFeatureIt != aFilletFeatures.resultConstraints.cend();
 673         ++aFeatureIt) {
 674       aDoc->removeFeature(*aFeatureIt);
 675     }
 676
 677     // Remove all result edges.
 678     for(aFeatureIt = aFilletFeatures.resultEdges.cbegin();
 679         aFeatureIt != aFilletFeatures.resultEdges.cend();
 680         ++aFeatureIt) {
 681       aDoc->removeFeature(*aFeatureIt);
 682     }
 683
 684     // Remove point from map.
 685     myPointFeaturesMap.erase(aPointsIter++);
 686   }
 687 };
 688
 689
 690 // =========   Auxiliary functions   =================
 691 void recalculateAttributes(FeaturePtr theNewArc,  const std::string& theNewArcAttribute,
 692                            FeaturePtr theFeature, const std::string& theFeatureAttribute)
 693 {
 694   std::shared_ptr<GeomAPI_Pnt2d> anArcPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 695       theNewArc->attribute(theNewArcAttribute))->pnt();
 696   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 697       theFeature->attribute(theFeatureAttribute))->setValue(anArcPoint->x(), anArcPoint->y());
 698 }
 699
 700 /// \brief Find intersections of lines shifted along normal direction
 701 void possibleFilletCenterLineLine(
 702     std::shared_ptr<GeomAPI_XY> thePointA, std::shared_ptr<GeomAPI_Dir2d> theDirA,
 703     std::shared_ptr<GeomAPI_XY> thePointB, std::shared_ptr<GeomAPI_Dir2d> theDirB,
 704     double theRadius, std::list< std::shared_ptr<GeomAPI_XY> >& theCenters)
 705 {
 706   std::shared_ptr<GeomAPI_Dir2d> aDirAT(new GeomAPI_Dir2d(-theDirA->y(), theDirA->x()));
 707   std::shared_ptr<GeomAPI_Dir2d> aDirBT(new GeomAPI_Dir2d(-theDirB->y(), theDirB->x()));
 708   std::shared_ptr<GeomAPI_XY> aPntA, aPntB;
 709   double aDet = theDirA->cross(theDirB);
 710   for (double aStepA = -1.0; aStepA <= 1.0; aStepA += 2.0) {
 711     aPntA = thePointA->added(aDirAT->xy()->multiplied(aStepA * theRadius));
 712     for (double aStepB = -1.0; aStepB <= 1.0; aStepB += 2.0) {
 713       aPntB = thePointB->added(aDirBT->xy()->multiplied(aStepB * theRadius));
 714       double aVX = aDirAT->xy()->dot(aPntA);
 715       double aVY = aDirBT->xy()->dot(aPntB);
 716       std::shared_ptr<GeomAPI_XY> aPoint(new GeomAPI_XY(
 717           (theDirB->x() * aVX - theDirA->x() * aVY) / aDet,
 718           (theDirB->y() * aVX - theDirA->y() * aVY) / aDet));
 719       theCenters.push_back(aPoint);
 720     }
 721   }
 722 }
 723
 724 /// \brief Find intersections of line shifted along normal direction in both sides
 725 ///        and a circle with extended radius
 726 void possibleFilletCenterLineArc(
 727     std::shared_ptr<GeomAPI_XY> theStartLine, std::shared_ptr<GeomAPI_Dir2d> theDirLine,
 728     std::shared_ptr<GeomAPI_XY> theCenterArc, double theRadiusArc,
 729     double theRadius, std::list< std::shared_ptr<GeomAPI_XY> >& theCenters)
 730 {
 731   std::shared_ptr<GeomAPI_Dir2d> aDirT(new GeomAPI_Dir2d(-theDirLine->y(), theDirLine->x()));
 732   std::shared_ptr<GeomAPI_XY> aPnt;
 733   double aDirNorm2 = theDirLine->dot(theDirLine);
 734   double aRad = 0.0;
 735   double aDirX = theDirLine->x();
 736   double aDirX2 = theDirLine->x() * theDirLine->x();
 737   double aDirY2 = theDirLine->y() * theDirLine->y();
 738   double aDirXY = theDirLine->x() * theDirLine->y();
 739   for (double aStepA = -1.0; aStepA <= 1.0; aStepA += 2.0) {
 740     aPnt = theStartLine->added(aDirT->xy()->multiplied(aStepA * theRadius));
 741     double aCoeff = aDirT->xy()->dot(aPnt->decreased(theCenterArc));
 742     double aCoeff2 = aCoeff * aCoeff;
 743     for (double aStepB = -1.0; aStepB <= 1.0; aStepB += 2.0) {
 744       aRad = theRadiusArc + aStepB * theRadius;
 745       double aD = aRad * aRad * aDirNorm2 - aCoeff2;
 746       if (aD < 0.0)
 747         continue;
 748       double aDs = sqrt(aD);
 749       double x1 = theCenterArc->x() + (aCoeff * aDirT->x() - aDirT->y() * aDs) / aDirNorm2;
 750       double x2 = theCenterArc->x() + (aCoeff * aDirT->x() + aDirT->y() * aDs) / aDirNorm2;
 751       double y1 = (aDirX2 * aPnt->y() + aDirY2 * theCenterArc->y() -
 752           aDirXY * (aPnt->x() - theCenterArc->x()) - theDirLine->y() * aDs) / aDirNorm2;
 753       double y2 = (aDirX2 * aPnt->y() + aDirY2 * theCenterArc->y() -
 754           aDirXY * (aPnt->x() - theCenterArc->x()) + theDirLine->y() * aDs) / aDirNorm2;
 755
 756       std::shared_ptr<GeomAPI_XY> aPoint1(new GeomAPI_XY(x1, y1));
 757       theCenters.push_back(aPoint1);
 758       std::shared_ptr<GeomAPI_XY> aPoint2(new GeomAPI_XY(x2, y2));
 759       theCenters.push_back(aPoint2);
 760     }
 761   }
 762 }
 763
 764 /// \brief Find intersections of two circles with extended radii
 765 void possibleFilletCenterArcArc(
 766     std::shared_ptr<GeomAPI_XY> theCenterA, double theRadiusA,
 767     std::shared_ptr<GeomAPI_XY> theCenterB, double theRadiusB,
 768     double theRadius, std::list< std::shared_ptr<GeomAPI_XY> >& theCenters)
 769 {
 770   std::shared_ptr<GeomAPI_XY> aCenterDir = theCenterB->decreased(theCenterA);
 771   double aCenterDist2 = aCenterDir->dot(aCenterDir);
 772   double aCenterDist = sqrt(aCenterDist2);
 773
 774   double aRadA, aRadB;
 775   for (double aStepA = -1.0; aStepA <= 1.0; aStepA += 2.0) {
 776     aRadA = theRadiusA + aStepA * theRadius;
 777     for (double aStepB = -1.0; aStepB <= 1.0; aStepB += 2.0) {
 778       aRadB = theRadiusB + aStepB * theRadius;
 779       if (aRadA + aRadB < aCenterDist || fabs(aRadA - aRadB) > aCenterDist)
 780         continue; // there is no intersections
 781
 782       double aMedDist = (aRadA * aRadA - aRadB * aRadB + aCenterDist2) / (2.0 * aCenterDist);
 783       double aHeight = sqrt(aRadA * aRadA - aMedDist * aMedDist);
 784
 785       double x1 = theCenterA->x() + (aMedDist * aCenterDir->x() + aCenterDir->y() * aHeight) / aCenterDist;
 786       double y1 = theCenterA->y() + (aMedDist * aCenterDir->y() - aCenterDir->x() * aHeight) / aCenterDist;
 787
 788       double x2 = theCenterA->x() + (aMedDist * aCenterDir->x() - aCenterDir->y() * aHeight) / aCenterDist;
 789       double y2 = theCenterA->y() + (aMedDist * aCenterDir->y() + aCenterDir->x() * aHeight) / aCenterDist;
 790
 791       std::shared_ptr<GeomAPI_XY> aPoint1(new GeomAPI_XY(x1, y1));
 792       theCenters.push_back(aPoint1);
 793       std::shared_ptr<GeomAPI_XY> aPoint2(new GeomAPI_XY(x2, y2));
 794       theCenters.push_back(aPoint2);
 795     }
 796   }
 797 }
 798
 799 void calculateFilletCenter(FeaturePtr theFeatureA, FeaturePtr theFeatureB,
 800                            double theRadius, bool theNotInversed[2],
 801                            std::shared_ptr<GeomAPI_XY>& theCenter,
 802                            std::shared_ptr<GeomAPI_XY>& theTangentA,
 803                            std::shared_ptr<GeomAPI_XY>& theTangentB)
 804 {
 805   static const int aNbFeatures = 2;
 806   FeaturePtr aFeature[aNbFeatures] = {theFeatureA, theFeatureB};
 807   std::shared_ptr<GeomAPI_XY> aStart[aNbFeatures], aEnd[aNbFeatures], aCenter[aNbFeatures];
 808   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, aEndPoint;
 809
 810   for (int i = 0; i < aNbFeatures; i++) {
 811     if (aFeature[i]->getKind() == SketchPlugin_Line::ID()) {
 812       aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 813           aFeature[i]->attribute(SketchPlugin_Line::START_ID()));
 814       aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 815           aFeature[i]->attribute(SketchPlugin_Line::END_ID()));
 816     } else if (aFeature[i]->getKind() == SketchPlugin_Arc::ID()) {
 817       aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 818           aFeature[i]->attribute(SketchPlugin_Arc::START_ID()));
 819       aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 820           aFeature[i]->attribute(SketchPlugin_Arc::END_ID()));
 821       aCenter[i] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 822           aFeature[i]->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt()->xy();
 823     } else
 824       return;
 825     aStart[i] = std::shared_ptr<GeomAPI_XY>(theNotInversed[i] ?
 826         new GeomAPI_XY(aStartPoint->x(), aStartPoint->y()) :
 827         new GeomAPI_XY(aEndPoint->x(), aEndPoint->y()));
 828     aEnd[i] = std::shared_ptr<GeomAPI_XY>(theNotInversed[i] ?
 829         new GeomAPI_XY(aEndPoint->x(), aEndPoint->y()) :
 830         new GeomAPI_XY(aStartPoint->x(), aStartPoint->y()));
 831   }
 832
 833   if (theFeatureA->getKind() == SketchPlugin_Line::ID() &&
 834       theFeatureB->getKind() == SketchPlugin_Line::ID()) {
 835     std::shared_ptr<GeomAPI_Dir2d> aDir[2];
 836     std::shared_ptr<GeomAPI_Dir2d> aDirT[2];
 837     for (int i = 0; i < aNbFeatures; i++) {
 838       aDir[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(aEnd[i]->decreased(aStart[i])));
 839       aDirT[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(-aDir[i]->y(), aDir[i]->x()));
 840     }
 841
 842     // get and filter possible centers
 843     std::list< std::shared_ptr<GeomAPI_XY> > aSuspectCenters;
 844     possibleFilletCenterLineLine(aStart[0], aDir[0], aStart[1], aDir[1], theRadius, aSuspectCenters);
 845     double aDot = 0.0;
 846     std::list< std::shared_ptr<GeomAPI_XY> >::iterator anIt = aSuspectCenters.begin();
 847     for (; anIt != aSuspectCenters.end(); anIt++) {
 848       aDot = aDirT[0]->xy()->dot(aStart[0]->decreased(*anIt));
 849       theTangentA = (*anIt)->added(aDirT[0]->xy()->multiplied(aDot));
 850       if (theTangentA->decreased(aStart[0])->dot(aDir[0]->xy()) < 0.0)
 851         continue; // incorrect position
 852       aDot = aDirT[1]->xy()->dot(aStart[1]->decreased(*anIt));
 853       theTangentB = (*anIt)->added(aDirT[1]->xy()->multiplied(aDot));
 854       if (theTangentB->decreased(aStart[1])->dot(aDir[1]->xy()) < 0.0)
 855         continue; // incorrect position
 856       // the center is found, stop searching
 857       theCenter = *anIt;
 858       return;
 859     }
 860   } else if ((theFeatureA->getKind() == SketchPlugin_Arc::ID() &&
 861       theFeatureB->getKind() == SketchPlugin_Line::ID()) ||
 862       (theFeatureA->getKind() == SketchPlugin_Line::ID() &&
 863       theFeatureB->getKind() == SketchPlugin_Arc::ID())) {
 864     int aLineInd = theFeatureA->getKind() == SketchPlugin_Line::ID() ? 0 : 1;
 865     double anArcRadius = aStart[1-aLineInd]->distance(aCenter[1-aLineInd]);
 866     std::shared_ptr<GeomAPI_Dir2d> aDirLine = std::shared_ptr<GeomAPI_Dir2d>(
 867         new GeomAPI_Dir2d(aEnd[aLineInd]->decreased(aStart[aLineInd])));
 868     std::shared_ptr<GeomAPI_Dir2d> aDirT = std::shared_ptr<GeomAPI_Dir2d>(
 869         new GeomAPI_Dir2d(-aDirLine->y(), aDirLine->x()));
 870
 871     std::shared_ptr<GeomAPI_Dir2d> aStartArcDir = std::shared_ptr<GeomAPI_Dir2d>(
 872         new GeomAPI_Dir2d(aStart[1-aLineInd]->decreased(aCenter[1-aLineInd])));
 873     std::shared_ptr<GeomAPI_Dir2d> aEndArcDir = std::shared_ptr<GeomAPI_Dir2d>(
 874         new GeomAPI_Dir2d(aEnd[1-aLineInd]->decreased(aCenter[1-aLineInd])));
 875     double anArcAngle = aEndArcDir->angle(aStartArcDir);
 876
 877     // get possible centers and filter them
 878     std::list< std::shared_ptr<GeomAPI_XY> > aSuspectCenters;
 879     possibleFilletCenterLineArc(aStart[aLineInd], aDirLine, aCenter[1-aLineInd], anArcRadius, theRadius, aSuspectCenters);
 880     double aDot = 0.0;
 881     // the line is forward into the arc
 882     double innerArc = aCenter[1-aLineInd]->decreased(aStart[aLineInd])->dot(aDirLine->xy());
 883     std::shared_ptr<GeomAPI_XY> aLineTgPoint, anArcTgPoint;
 884     // The possible centers are ranged by their positions.
 885     // If the point is not satisfy one of criteria, the weight is decreased with penalty.
 886     int aBestWeight = 0;
 887     std::list< std::shared_ptr<GeomAPI_XY> >::iterator anIt = aSuspectCenters.begin();
 888     for (; anIt != aSuspectCenters.end(); anIt++) {
 889       int aWeight = 2;
 890       aDot = aDirT->xy()->dot(aStart[aLineInd]->decreased(*anIt));
 891       aLineTgPoint = (*anIt)->added(aDirT->xy()->multiplied(aDot));
 892       // Check the point is placed on the correct arc (penalty if false)
 893       if (aCenter[1-aLineInd]->distance(*anIt) * innerArc > anArcRadius * innerArc)
 894         aWeight -= 1;
 895       std::shared_ptr<GeomAPI_Dir2d> aCurDir = std::shared_ptr<GeomAPI_Dir2d>(
 896           new GeomAPI_Dir2d((*anIt)->decreased(aCenter[1-aLineInd])));
 897       double aCurAngle = aCurDir->angle(aStartArcDir);
 898       if (anArcAngle < 0.0) aCurAngle *= -1.0;
 899       if (aCurAngle < 0.0 || aCurAngle > fabs(anArcAngle))
 900         continue;
 901       if (aWeight > aBestWeight)
 902         aBestWeight = aWeight;
 903       else if (aWeight < aBestWeight ||
 904                aStart[aLineInd]->distance(*anIt) >
 905                aStart[aLineInd]->distance(theCenter)) // <-- take closer point
 906         continue;
 907       // the center is found, stop searching
 908       theCenter = *anIt;
 909       anArcTgPoint = aCenter[1-aLineInd]->added(aCurDir->xy()->multiplied(anArcRadius));
 910       if (theFeatureA->getKind() == SketchPlugin_Line::ID()) {
 911         theTangentA = aLineTgPoint;
 912         theTangentB = anArcTgPoint;
 913       } else {
 914         theTangentA = anArcTgPoint;
 915         theTangentB = aLineTgPoint;
 916       }
 917       //return;
 918     }
 919   } else if (theFeatureA->getKind() == SketchPlugin_Arc::ID() &&
 920       theFeatureB->getKind() == SketchPlugin_Arc::ID()) {
 921     double anArcRadius[aNbFeatures];
 922     double anArcAngle[aNbFeatures];
 923     std::shared_ptr<GeomAPI_Dir2d> aStartArcDir[aNbFeatures];
 924     for (int i = 0; i < aNbFeatures; i++) {
 925       anArcRadius[i] = aStart[i]->distance(aCenter[i]);
 926       aStartArcDir[i] = std::shared_ptr<GeomAPI_Dir2d>(
 927           new GeomAPI_Dir2d(aStart[i]->decreased(aCenter[i])));
 928       std::shared_ptr<GeomAPI_Dir2d> aEndArcDir = std::shared_ptr<GeomAPI_Dir2d>(
 929           new GeomAPI_Dir2d(aEnd[i]->decreased(aCenter[i])));
 930       anArcAngle[i] = aEndArcDir->angle(aStartArcDir[i]);
 931     }
 932
 933     // get and filter possible centers
 934     std::list< std::shared_ptr<GeomAPI_XY> > aSuspectCenters;
 935     possibleFilletCenterArcArc(aCenter[0], anArcRadius[0], aCenter[1], anArcRadius[1], theRadius, aSuspectCenters);
 936     double aDot = 0.0;
 937     std::shared_ptr<GeomAPI_XY> aLineTgPoint, anArcTgPoint;
 938     std::list< std::shared_ptr<GeomAPI_XY> >::iterator anIt = aSuspectCenters.begin();
 939     for (; anIt != aSuspectCenters.end(); anIt++) {
 940       std::shared_ptr<GeomAPI_Dir2d> aCurDir = std::shared_ptr<GeomAPI_Dir2d>(
 941           new GeomAPI_Dir2d((*anIt)->decreased(aCenter[0])));
 942       double aCurAngle = aCurDir->angle(aStartArcDir[0]);
 943       if (anArcAngle[0] < 0.0) aCurAngle *= -1.0;
 944       if (aCurAngle < 0.0 || aCurAngle > fabs(anArcAngle[0]))
 945         continue; // incorrect position
 946       theTangentA = aCenter[0]->added(aCurDir->xy()->multiplied(anArcRadius[0]));
 947
 948       aCurDir = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d((*anIt)->decreased(aCenter[1])));
 949       aCurAngle = aCurDir->angle(aStartArcDir[1]);
 950       if (anArcAngle[1] < 0.0) aCurAngle *= -1.0;
 951       if (aCurAngle < 0.0 || aCurAngle > fabs(anArcAngle[1]))
 952         continue; // incorrect position
 953       theTangentB = aCenter[1]->added(aCurDir->xy()->multiplied(anArcRadius[1]));
 954
 955       // the center is found, stop searching
 956       theCenter = *anIt;
 957       return;
 958     }
 959   }
 960 }
 961
 962 void getPointOnEdge(const FeaturePtr theFeature,
 963                     const std::shared_ptr<GeomAPI_Pnt2d> theFilletPoint,
 964                     std::shared_ptr<GeomAPI_Pnt2d>& thePoint) {
 965   if(theFeature->getKind() == SketchPlugin_Line::ID()) {
 966     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 967       theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
 968     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 969       theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
 970     if(aPntStart->distance(theFilletPoint) > 1.e-7) {
 971       aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 972         theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
 973       aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 974         theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
 975     }
 976     thePoint.reset( new GeomAPI_Pnt2d(aPntStart->xy()->added( aPntEnd->xy()->decreased( aPntStart->xy() )->multiplied(1.0 / 3.0) ) ) );
 977   } else {
 978     std::shared_ptr<GeomAPI_Pnt2d> aPntTemp;
 979     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 980       theFeature->attribute(SketchPlugin_Arc::START_ID()))->pnt();
 981     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 982       theFeature->attribute(SketchPlugin_Arc::END_ID()))->pnt();
 983     if(theFeature->attribute(SketchPlugin_Arc::INVERSED_ID())) {
 984       aPntTemp = aPntStart;
 985       aPntStart = aPntEnd;
 986       aPntEnd = aPntTemp;
 987     }
 988     std::shared_ptr<GeomAPI_Pnt2d> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 989       theFeature->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt();
 990     std::shared_ptr<GeomAPI_Circ2d> aCirc(new GeomAPI_Circ2d(aCenterPnt, aPntStart));
 991     double aStartParameter(0), anEndParameter(0);
 992     aCirc->parameter(aPntStart, paramTolerance, aStartParameter);
 993     aCirc->parameter(aPntEnd, paramTolerance, anEndParameter);
 994     if(aPntStart->distance(theFilletPoint) > tolerance) {
 995       double aTmpParameter = aStartParameter;
 996       aStartParameter = anEndParameter;
 997       anEndParameter = aTmpParameter;
 998     }
 999     double aPntParameter = aStartParameter + (anEndParameter - aStartParameter) / 3.0;
1000     aCirc->D0(aPntParameter, thePoint);
1001   }
1002 }
1003
1004 double getProjectionDistance(const FeaturePtr theFeature,
1005                              const std::shared_ptr<GeomAPI_Pnt2d> thePoint)
1006 {
1007   std::shared_ptr<GeomAPI_Pnt2d> aProjectPnt;
1008   if(theFeature->getKind() == SketchPlugin_Line::ID()) {
1009     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1010       theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
1011     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1012       theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
1013     std::shared_ptr<GeomAPI_Lin2d> aLin(new GeomAPI_Lin2d(aPntStart, aPntEnd));
1014     aProjectPnt = aLin->project(thePoint);
1015   } else {
1016     std::shared_ptr<GeomAPI_Pnt2d> aPntStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1017       theFeature->attribute(SketchPlugin_Arc::START_ID()))->pnt();
1018     std::shared_ptr<GeomAPI_Pnt2d> aPntEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1019       theFeature->attribute(SketchPlugin_Arc::END_ID()))->pnt();
1020     std::shared_ptr<GeomAPI_Pnt2d> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1021       theFeature->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt();
1022     std::shared_ptr<GeomAPI_Circ2d> aCirc(new GeomAPI_Circ2d(aCenterPnt, aPntStart));
1023     aProjectPnt = aCirc->project(thePoint);
1024   }
1025   if(aProjectPnt.get()) {
1026     return aProjectPnt->distance(thePoint);
1027   }
1028   return -1;
1029 }
1030
1031 std::set<FeaturePtr> getCoincides(const FeaturePtr& theConstraintCoincidence)
1032 {
1033   std::set<FeaturePtr> aCoincides;
1034
1035   SketchPlugin_Tools::findCoincidences(theConstraintCoincidence,
1036                                        SketchPlugin_ConstraintCoincidence::ENTITY_A(),
1037                                        aCoincides);
1038   SketchPlugin_Tools::findCoincidences(theConstraintCoincidence,
1039                                        SketchPlugin_ConstraintCoincidence::ENTITY_B(),
1040                                        aCoincides);
1041
1042   // Remove points from set of coincides.
1043   std::set<FeaturePtr> aNewSetOfCoincides;
1044   for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
1045     if((*anIt)->getKind() == SketchPlugin_Line::ID() ||
1046         (*anIt)->getKind() == SketchPlugin_Arc::ID() ) {
1047       aNewSetOfCoincides.insert(*anIt);
1048     }
1049   }
1050   aCoincides = aNewSetOfCoincides;
1051
1052   // If we still have more than two coincides remove auxilary entities from set of coincides.
1053   if(aCoincides.size() > 2) {
1054     aNewSetOfCoincides.clear();
1055     for(std::set<FeaturePtr>::iterator anIt = aCoincides.begin(); anIt != aCoincides.end(); ++anIt) {
1056       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
1057         aNewSetOfCoincides.insert(*anIt);
1058       }
1059     }
1060     aCoincides = aNewSetOfCoincides;
1061   }
1062
1063   return aCoincides;
1064 }