src/SketchSolver/PlaneGCSSolver/PlaneGCSSolver_Storage.cpp

   1 // Copyright (C) 2014-2019  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include <PlaneGCSSolver_Storage.h>
  21 #include <PlaneGCSSolver_Solver.h>
  22 #include <PlaneGCSSolver_BooleanWrapper.h>
  23 #include <PlaneGCSSolver_ConstraintWrapper.h>
  24 #include <PlaneGCSSolver_EdgeWrapper.h>
  25 #include <PlaneGCSSolver_PointWrapper.h>
  26 #include <PlaneGCSSolver_Tools.h>
  27
  28 #include <PlaneGCSSolver_AttributeBuilder.h>
  29 #include <PlaneGCSSolver_FeatureBuilder.h>
  30 #include <PlaneGCSSolver_EntityDestroyer.h>
  31
  32 #include <GeomAPI_Dir2d.h>
  33 #include <GeomAPI_Pnt2d.h>
  34 #include <GeomAPI_XY.h>
  35 #include <GeomDataAPI_Point2D.h>
  36 #include <ModelAPI_AttributeRefAttr.h>
  37 #include <SketchPlugin_Ellipse.h>
  38 #include <SketchPlugin_Projection.h>
  39
  40 #include <cmath>
  41
  42
  43 static void constraintsToSolver(const ConstraintWrapperPtr& theConstraint,
  44                                 const SolverPtr& theSolver)
  45 {
  46   const std::list<GCSConstraintPtr>& aConstraints =
  47       std::dynamic_pointer_cast<PlaneGCSSolver_ConstraintWrapper>(theConstraint)->constraints();
  48   theSolver->addConstraint(theConstraint->id(), aConstraints);
  49 }
  50
  51
  52 PlaneGCSSolver_Storage::PlaneGCSSolver_Storage(const SolverPtr& theSolver)
  53   : SketchSolver_Storage(theSolver),
  54     myConstraintLastID(CID_UNKNOWN)
  55 {
  56 }
  57
  58 void PlaneGCSSolver_Storage::addConstraint(
  59     ConstraintPtr        theConstraint,
  60     ConstraintWrapperPtr theSolverConstraint)
  61 {
  62   SketchSolver_Storage::addConstraint(theConstraint, theSolverConstraint);
  63
  64   theSolverConstraint->setId(++myConstraintLastID);
  65   constraintsToSolver(theSolverConstraint, mySketchSolver);
  66 }
  67
  68 void PlaneGCSSolver_Storage::addMovementConstraint(
  69     const ConstraintWrapperPtr& theSolverConstraint)
  70 {
  71   // before adding movement constraint to solver, re-check its DOF
  72   if (mySketchSolver->dof() == 0)
  73     mySketchSolver->diagnose();
  74
  75   theSolverConstraint->setId(CID_MOVEMENT);
  76   constraintsToSolver(theSolverConstraint, mySketchSolver);
  77 }
  78
  79
  80 EntityWrapperPtr PlaneGCSSolver_Storage::createFeature(
  81     const FeaturePtr&             theFeature,
  82     PlaneGCSSolver_EntityBuilder* theBuilder)
  83 {
  84   std::list<AttributePtr> anAttributes = theFeature->data()->attributes(std::string());
  85   std::list<AttributePtr>::const_iterator anIt = anAttributes.begin();
  86   for (; anIt != anAttributes.end(); ++anIt)
  87     createAttribute(*anIt, theBuilder);
  88
  89   EntityWrapperPtr aResult = theBuilder->createFeature(theFeature);
  90   if (aResult)
  91     addEntity(theFeature, aResult);
  92   return aResult;
  93 }
  94
  95 EntityWrapperPtr PlaneGCSSolver_Storage::createAttribute(
  96     const AttributePtr&           theAttribute,
  97     PlaneGCSSolver_EntityBuilder* theBuilder)
  98 {
  99   EntityWrapperPtr aResult = theBuilder->createAttribute(theAttribute);
 100   if (aResult)
 101     addEntity(theAttribute, aResult);
 102   return aResult;
 103 }
 104
 105 /// \brief Update value
 106 static bool updateValue(const double& theSource, double& theDest)
 107 {
 108   static const double aTol = 1000. * tolerance;
 109   bool isUpdated = fabs(theSource - theDest) > aTol;
 110   if (isUpdated)
 111     theDest = theSource;
 112   return isUpdated;
 113 }
 114
 115 /// \brief Update coordinates of the point or scalar using its base attribute
 116 static bool updateValues(AttributePtr& theAttribute, EntityWrapperPtr& theEntity)
 117 {
 118   bool isUpdated = false;
 119
 120   std::shared_ptr<GeomDataAPI_Point2D> aPoint2D =
 121       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(theAttribute);
 122   if (aPoint2D) {
 123     const GCSPointPtr& aGCSPoint =
 124         std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(theEntity)->point();
 125     isUpdated = updateValue(aPoint2D->x(), *(aGCSPoint->x)) || isUpdated;
 126     isUpdated = updateValue(aPoint2D->y(), *(aGCSPoint->y)) || isUpdated;
 127   } else {
 128     AttributeDoublePtr aScalar =
 129         std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(theAttribute);
 130     if (aScalar) {
 131       ScalarWrapperPtr aWrapper =
 132           std::dynamic_pointer_cast<PlaneGCSSolver_ScalarWrapper>(theEntity);
 133       // There is possible angular value, which is converted between degrees and radians.
 134       // So, we use its value instead of using direct pointer to value.
 135       double aValue = aWrapper->value();
 136       isUpdated = updateValue(aScalar->value(), aValue);
 137       if (isUpdated)
 138         aWrapper->setValue(aValue);
 139     } else {
 140       AttributeBooleanPtr aBoolean =
 141           std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(theAttribute);
 142       if (aBoolean) {
 143         BooleanWrapperPtr aWrapper =
 144             std::dynamic_pointer_cast<PlaneGCSSolver_BooleanWrapper>(theEntity);
 145         isUpdated = aWrapper->value() != aBoolean->value();
 146         aWrapper->setValue(aBoolean->value());
 147       }
 148     }
 149   }
 150
 151   return isUpdated;
 152 }
 153
 154 static bool hasReference(std::shared_ptr<SketchPlugin_Feature> theFeature,
 155                          const std::string& theFeatureKind)
 156 {
 157   const std::set<AttributePtr>& aRefs = theFeature->data()->refsToMe();
 158   for (std::set<AttributePtr>::const_iterator aRefIt = aRefs.begin();
 159        aRefIt != aRefs.end(); ++aRefIt) {
 160      FeaturePtr anOwner = ModelAPI_Feature::feature((*aRefIt)->owner());
 161      if (anOwner && anOwner->getKind() == theFeatureKind)
 162        return true;
 163   }
 164   return false;
 165 }
 166
 167 static bool isCopyFeature(std::shared_ptr<SketchPlugin_Feature> theFeature)
 168 {
 169   return theFeature && theFeature->isCopy();
 170 }
 171
 172 bool PlaneGCSSolver_Storage::update(FeaturePtr theFeature, bool theForce)
 173 {
 174   bool sendNotify = false;
 175   bool isUpdated = false;
 176   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 177       std::dynamic_pointer_cast<SketchPlugin_Feature>(theFeature);
 178   EntityWrapperPtr aRelated = entity(theFeature);
 179   if (aRelated) // send signal to subscribers
 180     sendNotify = true;
 181   else { // Feature is not exist, create it
 182     bool isCopy = isCopyFeature(aSketchFeature);
 183     bool isProjReferred = hasReference(aSketchFeature, SketchPlugin_Projection::ID());
 184     // the feature is a copy in "Multi" constraint and does not used in other constraints
 185     if (!theForce && (isCopy && !isProjReferred) &&
 186         myFeatureMap.find(theFeature) == myFeatureMap.end())
 187       return false;
 188
 189     // external feature processing
 190     bool isExternal =
 191         (aSketchFeature && (aSketchFeature->isExternal() || isCopy || isProjReferred));
 192
 193     PlaneGCSSolver_FeatureBuilder aBuilder(isExternal ? 0 : this);
 194
 195     // Reserve the feature in the map of features
 196     // (do not want to add several copies of it while adding attributes)
 197     aRelated = createFeature(theFeature, &aBuilder);
 198     myFeatureMap[theFeature] = aRelated;
 199     createAuxiliaryConstraints(aRelated);
 200     isUpdated = true;
 201   }
 202
 203   std::list<AttributePtr> anAttributes = theFeature->data()->attributes(std::string());
 204   std::list<AttributePtr>::iterator anAttrIt = anAttributes.begin();
 205   for (; anAttrIt != anAttributes.end(); ++anAttrIt)
 206     if ((*anAttrIt)->attributeType() == GeomDataAPI_Point2D::typeId() ||
 207         (*anAttrIt)->attributeType() == ModelAPI_AttributeDouble::typeId() ||
 208         (*anAttrIt)->attributeType() == ModelAPI_AttributeBoolean::typeId())
 209       isUpdated = update(*anAttrIt) || isUpdated;
 210
 211   // check external attribute is changed
 212   bool isExternal = aSketchFeature &&
 213                    (aSketchFeature->isExternal() || isCopyFeature(aSketchFeature));
 214   if (aRelated && isExternal != aRelated->isExternal()) {
 215     if (isExternal)
 216       makeExternal(aRelated);
 217     else
 218       makeNonExternal(aRelated);
 219     isUpdated = true;
 220   }
 221
 222   // send notification to listeners due to at least one attribute is changed
 223   if (sendNotify && isUpdated)
 224     notify(theFeature);
 225
 226   return isUpdated;
 227 }
 228
 229 bool PlaneGCSSolver_Storage::update(AttributePtr theAttribute, bool theForce)
 230 {
 231   if (!theAttribute->isInitialized())
 232     return false;
 233
 234   AttributePtr anAttribute = theAttribute;
 235   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(anAttribute);
 236   if (aRefAttr) {
 237     if (aRefAttr->isObject()) {
 238       FeaturePtr aFeature;
 239       /// TODO: Check resultToFeatureOrAttribute() precisely.
 240       resultToFeatureOrAttribute(aRefAttr->object(), aFeature, anAttribute);
 241       if (aFeature)
 242         return update(aFeature, theForce);
 243     } else
 244       anAttribute = aRefAttr->attr();
 245   }
 246
 247   EntityWrapperPtr aRelated = entity(anAttribute);
 248   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttribute->owner());
 249   if (!aRelated) { // Attribute does not exist, create it.
 250     // First of all check if the parent feature exists. If not, add it.
 251     if (aFeature && myFeatureMap.find(aFeature) == myFeatureMap.end())
 252       return update(aFeature, theForce); // theAttribute has been processed while adding feature
 253     return aRelated.get() != 0;
 254   }
 255
 256   bool isUpdated = updateValues(anAttribute, aRelated);
 257   if (isUpdated) {
 258     setNeedToResolve(true);
 259     notify(aFeature);
 260   }
 261   return isUpdated;
 262 }
 263
 264 void PlaneGCSSolver_Storage::makeExternal(const EntityWrapperPtr& theEntity)
 265 {
 266   if (theEntity->isExternal())
 267     return;
 268
 269   removeAuxiliaryConstraints(theEntity);
 270
 271   GCS::SET_pD aParameters = PlaneGCSSolver_Tools::parameters(theEntity);
 272   mySketchSolver->removeParameters(aParameters);
 273   theEntity->setExternal(true);
 274   myNeedToResolve = true;
 275 }
 276
 277 void PlaneGCSSolver_Storage::makeNonExternal(const EntityWrapperPtr& theEntity)
 278 {
 279   if (!theEntity->isExternal())
 280     return;
 281
 282   GCS::SET_pD aParameters = PlaneGCSSolver_Tools::parameters(theEntity);
 283   mySketchSolver->addParameters(aParameters);
 284   theEntity->setExternal(false);
 285
 286   createAuxiliaryConstraints(theEntity);
 287
 288   myNeedToResolve = true;
 289 }
 290
 291
 292 static void createArcConstraints(const EntityWrapperPtr& theArc,
 293                                  const SolverPtr& theSolver,
 294                                  const ConstraintID theConstraintID,
 295                                  std::map<EntityWrapperPtr, ConstraintWrapperPtr>& theConstraints)
 296 {
 297   EdgeWrapperPtr anEdge = std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(theArc);
 298   std::shared_ptr<GCS::Arc> anArc = std::dynamic_pointer_cast<GCS::Arc>(anEdge->entity());
 299
 300   // Additional constaints to fix arc's extra DoF (if the arc is not external):
 301   std::list<GCSConstraintPtr> anArcConstraints;
 302   // constrain the start point on the arc
 303   anArcConstraints.push_back(GCSConstraintPtr(new GCS::ConstraintCurveValue(
 304     anArc->start, anArc->start.x, *anArc, anArc->startAngle)));
 305   anArcConstraints.push_back(GCSConstraintPtr(new GCS::ConstraintCurveValue(
 306     anArc->start, anArc->start.y, *anArc, anArc->startAngle)));
 307   // constrain the end point on the arc
 308   anArcConstraints.push_back(GCSConstraintPtr(new GCS::ConstraintCurveValue(
 309     anArc->end, anArc->end.x, *anArc, anArc->endAngle)));
 310   anArcConstraints.push_back(GCSConstraintPtr(new GCS::ConstraintCurveValue(
 311     anArc->end, anArc->end.y, *anArc, anArc->endAngle)));
 312
 313   ConstraintWrapperPtr aWrapper(
 314     new PlaneGCSSolver_ConstraintWrapper(anArcConstraints, CONSTRAINT_UNKNOWN));
 315   aWrapper->setId(theConstraintID);
 316   constraintsToSolver(aWrapper, theSolver);
 317
 318   theConstraints[theArc] = aWrapper;
 319 }
 320
 321 static void createEllipseConstraints(
 322     const EntityWrapperPtr& theEllipse,
 323     const SolverPtr& theSolver,
 324     const ConstraintID theConstraintID,
 325     std::map<EntityWrapperPtr, ConstraintWrapperPtr>& theConstraints)
 326 {
 327   EdgeWrapperPtr anEdge = std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(theEllipse);
 328   std::shared_ptr<GCS::Ellipse> anEllipse =
 329       std::dynamic_pointer_cast<GCS::Ellipse>(anEdge->entity());
 330
 331   // Additional constaints to fix ellipse's extra points
 332   std::list<GCSConstraintPtr> anEllipseConstraints;
 333
 334   const std::map<std::string, EntityWrapperPtr>& anAttributes = theEllipse->additionalAttributes();
 335   for (std::map<std::string, EntityWrapperPtr>::const_iterator anIt = anAttributes.begin();
 336        anIt != anAttributes.end(); ++anIt) {
 337     std::shared_ptr<PlaneGCSSolver_PointWrapper> aPoint =
 338         std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(anIt->second);
 339     if (!aPoint)
 340       continue;
 341
 342     GCS::InternalAlignmentType anAlignmentX, anAlignmentY;
 343     if (anIt->first == SketchPlugin_Ellipse::SECOND_FOCUS_ID())
 344       anAlignmentX = GCS::EllipseFocus2X;
 345     else if (anIt->first == SketchPlugin_Ellipse::MAJOR_AXIS_START_ID())
 346       anAlignmentX = GCS::EllipseNegativeMajorX;
 347     else if (anIt->first == SketchPlugin_Ellipse::MAJOR_AXIS_END_ID())
 348       anAlignmentX = GCS::EllipsePositiveMajorX;
 349     else if (anIt->first == SketchPlugin_Ellipse::MINOR_AXIS_START_ID())
 350       anAlignmentX = GCS::EllipseNegativeMinorX;
 351     else if (anIt->first == SketchPlugin_Ellipse::MINOR_AXIS_END_ID())
 352       anAlignmentX = GCS::EllipsePositiveMinorX;
 353
 354     anEllipseConstraints.push_back(GCSConstraintPtr(
 355         new GCS::ConstraintInternalAlignmentPoint2Ellipse(*anEllipse, *(aPoint->point()), anAlignmentX)));
 356     anAlignmentY = (GCS::InternalAlignmentType)((int)anAlignmentX + 1);
 357     anEllipseConstraints.push_back(GCSConstraintPtr(
 358         new GCS::ConstraintInternalAlignmentPoint2Ellipse(*anEllipse, *(aPoint->point()), anAlignmentY)));
 359   }
 360
 361   // constraint to bind the major radius value
 362   std::shared_ptr<PlaneGCSSolver_PointWrapper> aMajorAxisStart =
 363       std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(
 364       anAttributes.at(SketchPlugin_Ellipse::MAJOR_AXIS_START_ID()));
 365   ScalarWrapperPtr aMajorRadius =
 366       std::dynamic_pointer_cast<PlaneGCSSolver_ScalarWrapper>(
 367       anAttributes.at(SketchPlugin_Ellipse::MAJOR_RADIUS_ID()));
 368   anEllipseConstraints.push_back(GCSConstraintPtr(new GCS::ConstraintP2PDistance(
 369       anEllipse->center, *(aMajorAxisStart->point()), aMajorRadius->scalar())));
 370
 371   ConstraintWrapperPtr aWrapper(
 372     new PlaneGCSSolver_ConstraintWrapper(anEllipseConstraints, CONSTRAINT_UNKNOWN));
 373   aWrapper->setId(theConstraintID);
 374   constraintsToSolver(aWrapper, theSolver);
 375
 376   theConstraints[theEllipse] = aWrapper;
 377 }
 378
 379 void PlaneGCSSolver_Storage::createAuxiliaryConstraints(const EntityWrapperPtr& theEntity)
 380 {
 381   if (!theEntity || theEntity->isExternal())
 382     return;
 383
 384   if (theEntity->type() == ENTITY_ARC)
 385     createArcConstraints(theEntity, mySketchSolver, ++myConstraintLastID, myAuxConstraintMap);
 386   else if (theEntity->type() == ENTITY_ELLIPSE)
 387     createEllipseConstraints(theEntity, mySketchSolver, ++myConstraintLastID, myAuxConstraintMap);
 388 }
 389
 390 void PlaneGCSSolver_Storage::removeAuxiliaryConstraints(const EntityWrapperPtr& theEntity)
 391 {
 392   std::map<EntityWrapperPtr, ConstraintWrapperPtr>::iterator
 393       aFound = myAuxConstraintMap.find(theEntity);
 394   if (aFound != myAuxConstraintMap.end()) {
 395     mySketchSolver->removeConstraint(aFound->second->id());
 396     myAuxConstraintMap.erase(aFound);
 397   }
 398 }
 399
 400 void PlaneGCSSolver_Storage::adjustParametrizationOfArcs()
 401 {
 402   std::map<EntityWrapperPtr, ConstraintWrapperPtr>::iterator anIt = myAuxConstraintMap.begin();
 403   for (; anIt != myAuxConstraintMap.end(); ++anIt) {
 404     EdgeWrapperPtr anEdge = std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(anIt->first);
 405     std::shared_ptr<GCS::Arc> anArc = std::dynamic_pointer_cast<GCS::Arc>(anEdge->entity());
 406     if (!anArc)
 407       continue;
 408     // tune start angle of the arc to be in [0, 2PI]
 409     while (*anArc->startAngle < -PI)
 410       *anArc->startAngle += 2.0 * PI;
 411     while (*anArc->startAngle >= PI)
 412       *anArc->startAngle -= 2.0 * PI;
 413     // adjust end angle of the arc
 414     if (anEdge->isReversed()) {
 415       while (*anArc->endAngle > *anArc->startAngle)
 416         *anArc->endAngle -= 2.0 * PI;
 417       while (*anArc->endAngle + 2 * PI < *anArc->startAngle)
 418         *anArc->endAngle += 2.0 * PI;
 419     } else {
 420       while (*anArc->endAngle < *anArc->startAngle)
 421         *anArc->endAngle += 2.0 * PI;
 422       while (*anArc->endAngle > *anArc->startAngle + 2 * PI)
 423         *anArc->endAngle -= 2.0 * PI;
 424     }
 425   }
 426
 427   // update parameters of Middle point constraint for point on arc
 428   std::map<ConstraintPtr, ConstraintWrapperPtr>::iterator aCIt = myConstraintMap.begin();
 429   for (; aCIt != myConstraintMap.end(); ++aCIt)
 430     if (aCIt->second->type() == CONSTRAINT_MIDDLE_POINT) {
 431       notify(aCIt->first);
 432     }
 433 }
 434
 435
 436 bool PlaneGCSSolver_Storage::removeConstraint(ConstraintPtr theConstraint)
 437 {
 438   std::map<ConstraintPtr, ConstraintWrapperPtr>::iterator
 439       aFound = myConstraintMap.find(theConstraint);
 440   if (aFound != myConstraintMap.end()) {
 441     ConstraintWrapperPtr aCW = aFound->second;
 442     ConstraintID anID = aCW->id();
 443
 444     // Remove solver's constraints
 445     mySketchSolver->removeConstraint(anID);
 446
 447     // Remove value if exists
 448     const ScalarWrapperPtr& aValue = aCW->valueParameter();
 449     if (aValue) {
 450       GCS::SET_pD aParToRemove;
 451       aParToRemove.insert(aValue->scalar());
 452       removeParameters(aParToRemove);
 453     }
 454
 455     // Remove constraint
 456     myConstraintMap.erase(aFound);
 457
 458     if (anID != CID_MOVEMENT)
 459       myNeedToResolve = true;
 460
 461     // notify subscibers
 462     notify(theConstraint);
 463   }
 464   return true;
 465 }
 466
 467 void PlaneGCSSolver_Storage::removeInvalidEntities()
 468 {
 469   PlaneGCSSolver_EntityDestroyer aDestroyer;
 470
 471   // Remove invalid constraints
 472   std::list<ConstraintPtr> anInvalidConstraints;
 473   std::map<ConstraintPtr, ConstraintWrapperPtr>::const_iterator
 474       aCIter = myConstraintMap.begin();
 475   for (; aCIter != myConstraintMap.end(); ++aCIter)
 476     if (!aCIter->first->data() || !aCIter->first->data()->isValid())
 477       anInvalidConstraints.push_back(aCIter->first);
 478   std::list<ConstraintPtr>::const_iterator anInvCIt = anInvalidConstraints.begin();
 479   for (; anInvCIt != anInvalidConstraints.end(); ++anInvCIt)
 480     removeConstraint(*anInvCIt);
 481
 482   // Remove invalid features
 483   std::list<FeaturePtr> anInvalidFeatures;
 484   std::map<FeaturePtr, EntityWrapperPtr>::const_iterator aFIter = myFeatureMap.begin();
 485   for (; aFIter != myFeatureMap.end(); aFIter++)
 486     if (!aFIter->first->data() || !aFIter->first->data()->isValid()) {
 487       anInvalidFeatures.push_back(aFIter->first);
 488       if (aFIter->second)
 489         aDestroyer.remove(aFIter->second);
 490
 491       // remove invalid arc
 492       removeAuxiliaryConstraints(aFIter->second);
 493     }
 494   std::list<FeaturePtr>::const_iterator anInvFIt = anInvalidFeatures.begin();
 495   for (; anInvFIt != anInvalidFeatures.end(); ++anInvFIt)
 496     removeFeature(*anInvFIt);
 497
 498   // Remove invalid attributes
 499   std::list<AttributePtr> anInvalidAttributes;
 500   std::map<AttributePtr, EntityWrapperPtr>::const_iterator anAttrIt = myAttributeMap.begin();
 501   for (; anAttrIt != myAttributeMap.end(); ++anAttrIt) {
 502     FeaturePtr anOwner = ModelAPI_Feature::feature(anAttrIt->first->owner());
 503     if (!anOwner || !anOwner->data() || !anOwner->data()->isValid()) {
 504       anInvalidAttributes.push_back(anAttrIt->first);
 505       aDestroyer.remove(anAttrIt->second);
 506     }
 507   }
 508   std::list<AttributePtr>::const_iterator anInvAtIt = anInvalidAttributes.begin();
 509   for (; anInvAtIt != anInvalidAttributes.end(); ++anInvAtIt)
 510     removeAttribute(*anInvAtIt);
 511
 512   // free memory occupied by parameters
 513   removeParameters(aDestroyer.parametersToRemove());
 514
 515   /// TODO: Think on optimization of checking invalid features and attributes
 516 }
 517
 518
 519
 520 double* PlaneGCSSolver_Storage::createParameter()
 521 {
 522   return mySketchSolver->createParameter();
 523 }
 524
 525 void PlaneGCSSolver_Storage::removeParameters(const GCS::SET_pD& theParams)
 526 {
 527   mySketchSolver->removeParameters(theParams);
 528 }
 529
 530 // indicates attribute containing in the external feature
 531 static bool isExternalAttribute(const AttributePtr& theAttribute)
 532 {
 533   if (!theAttribute)
 534     return false;
 535   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 536       std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 537   return aSketchFeature.get() && aSketchFeature->isExternal();
 538 }
 539
 540 static void addOwnerToSet(const AttributePtr& theAttribute, std::set<FeaturePtr>& theFeatures)
 541 {
 542   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
 543   if (anOwner)
 544     theFeatures.insert(anOwner);
 545 }
 546
 547 void PlaneGCSSolver_Storage::refresh() const
 548 {
 549   const double aTol = 1000. * tolerance; // tolerance to prevent frequent updates
 550
 551   std::set<FeaturePtr> anUpdatedFeatures;
 552
 553   std::map<AttributePtr, EntityWrapperPtr>::const_iterator anIt = myAttributeMap.begin();
 554   for (; anIt != myAttributeMap.end(); ++anIt) {
 555     if (!anIt->first->isInitialized())
 556       continue;
 557
 558     // the external feature always should keep the up to date values, so,
 559     // refresh from the solver is never needed
 560     if (isExternalAttribute(anIt->first))
 561       continue;
 562
 563     std::shared_ptr<GeomDataAPI_Point2D> aPoint2D =
 564         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anIt->first);
 565     if (aPoint2D) {
 566       std::shared_ptr<PlaneGCSSolver_PointWrapper> aPointWrapper =
 567           std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(anIt->second);
 568       GCSPointPtr aGCSPoint = aPointWrapper->point();
 569       if (fabs(aPoint2D->x() - (*aGCSPoint->x)) > aTol ||
 570           fabs(aPoint2D->y() - (*aGCSPoint->y)) > aTol) {
 571         aPoint2D->setValue(*aGCSPoint->x, *aGCSPoint->y);
 572         addOwnerToSet(anIt->first, anUpdatedFeatures);
 573       }
 574       continue;
 575     }
 576     AttributeDoublePtr aScalar = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(anIt->first);
 577     if (aScalar) {
 578       ScalarWrapperPtr aScalarWrapper =
 579           std::dynamic_pointer_cast<PlaneGCSSolver_ScalarWrapper>(anIt->second);
 580       if (fabs(aScalar->value() - aScalarWrapper->value()) > aTol) {
 581         aScalar->setValue(aScalarWrapper->value());
 582         addOwnerToSet(anIt->first, anUpdatedFeatures);
 583       }
 584       continue;
 585     }
 586   }
 587
 588   // notify listeners about features update
 589   std::set<FeaturePtr>::const_iterator aFIt = anUpdatedFeatures.begin();
 590   for (; aFIt != anUpdatedFeatures.end(); ++aFIt)
 591     notify(*aFIt);
 592 }
 593
 594 PlaneGCSSolver_Solver::SolveStatus PlaneGCSSolver_Storage::checkDegeneratedGeometry() const
 595 {
 596   std::map<FeaturePtr, EntityWrapperPtr>::const_iterator aFIt = myFeatureMap.begin();
 597   for (; aFIt != myFeatureMap.end(); ++aFIt) {
 598     EdgeWrapperPtr anEdge = std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(aFIt->second);
 599     if (anEdge && anEdge->isDegenerated())
 600       return PlaneGCSSolver_Solver::STATUS_DEGENERATED;
 601   }
 602   return PlaneGCSSolver_Solver::STATUS_OK;
 603 }