src/SketchPlugin/SketchPlugin_Validators.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:        SketchPlugin_Validators.cpp
   4 // Created:     01 Aug 2014
   5 // Author:      Vitaly SMETANNIKOV
   6
   7 #include "SketchPlugin_Validators.h"
   8
   9 #include "SketchPlugin_Arc.h"
  10 #include "SketchPlugin_Circle.h"
  11 #include "SketchPlugin_ConstraintCoincidence.h"
  12 #include "SketchPlugin_ConstraintDistance.h"
  13 #include "SketchPlugin_ConstraintFillet.h"
  14 #include "SketchPlugin_ConstraintRigid.h"
  15 #include "SketchPlugin_ConstraintTangent.h"
  16 #include "SketchPlugin_Line.h"
  17 #include "SketchPlugin_Point.h"
  18 #include "SketchPlugin_Sketch.h"
  19 #include "SketchPlugin_Tools.h"
  20
  21 #include "SketcherPrs_Tools.h"
  22
  23 #include <Events_InfoMessage.h>
  24
  25 #include <ModelAPI_Data.h>
  26 #include <ModelAPI_Validator.h>
  27 #include <ModelAPI_AttributeDouble.h>
  28 #include <ModelAPI_AttributeRefAttr.h>
  29
  30 #include <ModelAPI_AttributeRefAttrList.h>
  31 #include <ModelAPI_AttributeRefList.h>
  32 #include <ModelAPI_AttributeSelectionList.h>
  33 #include <ModelAPI_AttributeString.h>
  34 #include <ModelAPI_Session.h>
  35 #include <ModelAPI_Tools.h>
  36 #include <ModelAPI_ResultConstruction.h>
  37
  38 #include <ModelGeomAlgo_Point2D.h>
  39
  40 #include <GeomAPI_Circ.h>
  41 #include <GeomAPI_Lin.h>
  42 #include <GeomAPI_Edge.h>
  43 #include <GeomAPI_Vertex.h>
  44 #include <GeomDataAPI_Point2D.h>
  45
  46 #include <algorithm>
  47 #include <cmath>
  48
  49 const double tolerance = 1.e-7;
  50
  51 bool SketchPlugin_DistanceAttrValidator::isValid(const AttributePtr& theAttribute,
  52                                                  const std::list<std::string>& theArguments,
  53                                                  Events_InfoMessage& theError) const
  54 {
  55   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
  56     theError = "The attribute with the %1 type is not processed";
  57     theError.arg(theAttribute->attributeType());
  58     return false;
  59   }
  60
  61   // there is a check whether the feature contains a point and a linear edge or two point values
  62   std::string aParamA = theArguments.front();
  63   SessionPtr aMgr = ModelAPI_Session::get();
  64   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
  65
  66   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
  67   bool isObject = aRefAttr->isObject();
  68   if (!isObject) {
  69     // an attribute is a point. A point value is valid always for the distance
  70     return true;
  71   } else {
  72     // 1. check whether the references object is a linear
  73     ObjectPtr anObject = aRefAttr->object();
  74
  75     const ModelAPI_AttributeValidator* aShapeValidator =
  76       dynamic_cast<const ModelAPI_AttributeValidator*>(aFactory->validator("GeomValidators_ShapeType"));
  77     std::list<std::string> anArguments;
  78     anArguments.push_back("circle");
  79     Events_InfoMessage aCircleError;
  80     bool aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aCircleError);
  81     // the circle line is not a valid case
  82     if (aShapeValid) {
  83       theError = "Circle can not be used in distance constraint";
  84       return false;
  85     }
  86
  87     anArguments.clear();
  88     anArguments.push_back("line");
  89     Events_InfoMessage aLineError;
  90     aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aLineError);
  91     // if the attribute value is not a line, that means it is a vertex. A vertex is always valid
  92     if (aShapeValid) {
  93       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
  94       // If it is a line then we have to check that first attribute id not a line
  95       std::shared_ptr<SketchPlugin_Feature> aSFeature =
  96         std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
  97       SketchPlugin_Sketch* aSketch = aSFeature->sketch();
  98       std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(aSketch);
  99       std::shared_ptr<GeomDataAPI_Point2D> aPoint = SketcherPrs_Tools::getFeaturePoint(
 100         aFeature->data(), aParamA, aPlane);
 101       if (!aPoint.get()) {
 102         theError = "One of parameters of distance constraint should be a point";
 103         return false;
 104       }
 105     }
 106   }
 107   return true;
 108 }
 109
 110 static bool isCoincident(FeaturePtr theFeature1, FeaturePtr theFeature2)
 111 {
 112   AttributePtr aFeature1PointAttr[2];
 113   if(theFeature1->getKind() == SketchPlugin_Line::ID()) {
 114     aFeature1PointAttr[0] = theFeature1->attribute(SketchPlugin_Line::START_ID());
 115     aFeature1PointAttr[1] = theFeature1->attribute(SketchPlugin_Line::END_ID());
 116   } else if(theFeature1->getKind() == SketchPlugin_Arc::ID()) {
 117     aFeature1PointAttr[0] = theFeature1->attribute(SketchPlugin_Arc::START_ID());
 118     aFeature1PointAttr[1] = theFeature1->attribute(SketchPlugin_Arc::END_ID());
 119   }
 120
 121   std::set<AttributePtr> aRefsList = theFeature1->data()->refsToMe();
 122   for(std::set<AttributePtr>::const_iterator aRefIt = aRefsList.begin();
 123       aRefIt != aRefsList.end();
 124       ++aRefIt) {
 125     // Find constraint
 126     FeaturePtr aRefFeature = std::dynamic_pointer_cast<ModelAPI_Feature>((*aRefIt)->owner());
 127     if(aRefFeature->getKind() != SketchPlugin_ConstraintCoincidence::ID())
 128       continue;
 129     AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(*aRefIt);
 130     AttributePtr anAttr = aRefAttr->attr();
 131     if(anAttr != aFeature1PointAttr[0] && anAttr != aFeature1PointAttr[1])
 132       continue;
 133
 134     // Get coincides from constraint.
 135     std::set<FeaturePtr> aCoinsides;
 136     SketchPlugin_Tools::findCoincidences(aRefFeature,
 137                                          SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 138                                          aCoinsides);
 139     SketchPlugin_Tools::findCoincidences(aRefFeature,
 140                                          SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 141                                          aCoinsides);
 142
 143     if(aCoinsides.find(theFeature2) != aCoinsides.end()) {
 144       return true;
 145     }
 146   }
 147
 148   return false;
 149 }
 150
 151 static bool hasCoincidentPoint(FeaturePtr theFeature1, FeaturePtr theFeature2)
 152 {
 153   if(theFeature1->getKind() == SketchPlugin_Circle::ID() ||
 154       theFeature2->getKind() == SketchPlugin_Circle::ID()) {
 155     return false;
 156   }
 157
 158   return (isCoincident(theFeature1, theFeature2) && isCoincident(theFeature2, theFeature1));
 159 }
 160
 161 bool SketchPlugin_TangentAttrValidator::isValid(const AttributePtr& theAttribute,
 162                                                 const std::list<std::string>& theArguments,
 163                                                 Events_InfoMessage& theError) const
 164 {
 165   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 166     theError = "The attribute with the %1 type is not processed";
 167     theError.arg(theAttribute->attributeType());
 168     return false;
 169   }
 170
 171   // there is a check whether the feature contains a point and a linear edge or two point values
 172   std::string aParamA = theArguments.front();
 173   SessionPtr aMgr = ModelAPI_Session::get();
 174   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 175
 176   FeaturePtr anAttributeFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 177   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 178
 179   bool isObject = aRefAttr->isObject();
 180   ObjectPtr anObject = aRefAttr->object();
 181   if (isObject && anObject.get()) {
 182     FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
 183
 184     AttributeRefAttrPtr aOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 185     ObjectPtr aOtherObject = aOtherAttr->object();
 186     FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
 187     if (!aOtherFea)
 188       return true;
 189
 190     if ((aRefFea->getKind() == SketchPlugin_Arc::ID() ||
 191         aOtherFea->getKind() == SketchPlugin_Arc::ID()) &&
 192         !hasCoincidentPoint(aRefFea, aOtherFea))
 193       return false;
 194
 195     if (aRefFea->getKind() == SketchPlugin_Line::ID()) {
 196       if (aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
 197           aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
 198         theError = "It refers to a %1, but %2 is neither an %3 nor %4";
 199         theError.arg(SketchPlugin_Line::ID()).arg(aParamA)
 200             .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
 201         return false;
 202       }
 203     }
 204     else if (aRefFea->getKind() == SketchPlugin_Arc::ID()) {
 205       if (aOtherFea->getKind() != SketchPlugin_Line::ID() &&
 206         aOtherFea->getKind() != SketchPlugin_Arc::ID()) {
 207         theError = "It refers to an %1, but %2 is not a %3 or an %4";
 208         theError.arg(SketchPlugin_Arc::ID()).arg(aParamA)
 209             .arg(SketchPlugin_Line::ID()).arg(SketchPlugin_Arc::ID());
 210         return false;
 211       }
 212     }
 213     else if (aRefFea->getKind() == SketchPlugin_Circle::ID()) {
 214       if (aOtherFea->getKind() != SketchPlugin_Line::ID()) {
 215         theError = "It refers to an %1, but %2 is not a %3";
 216         theError.arg(SketchPlugin_Circle::ID()).arg(aParamA)
 217             .arg(SketchPlugin_Line::ID());
 218         return false;
 219       }
 220     }
 221     else {
 222       theError = "It refers to %1, but should refer to %2 or %3 or %4";
 223       theError.arg(aRefFea->getKind()).arg(SketchPlugin_Line::ID())
 224           .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
 225       return false;
 226     }
 227     return true;
 228   }
 229   else {
 230     theError = "It uses an empty object";
 231     return false;
 232   }
 233
 234   return true;
 235 }
 236
 237 bool SketchPlugin_NotFixedValidator::isValid(const AttributePtr& theAttribute,
 238                                              const std::list<std::string>& theArguments,
 239                                              Events_InfoMessage& theError) const
 240 {
 241   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 242     theError = "The attribute with the %1 type is not processed";
 243     theError.arg(theAttribute->attributeType());
 244     return false;
 245   }
 246
 247   std::shared_ptr<SketchPlugin_Feature> aFeature =
 248       std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 249   if (!aFeature)
 250     return true;
 251
 252   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 253
 254   SketchPlugin_Sketch* aSketch = aFeature->sketch();
 255   int aNbFeatures = aSketch->numberOfSubs();
 256   for (int anInd = 0; anInd < aNbFeatures; anInd++) {
 257     FeaturePtr aSubFeature = aSketch->subFeature(anInd);
 258     if (aSubFeature->getKind() != SketchPlugin_ConstraintRigid::ID() || aSubFeature == aFeature)
 259       continue;
 260     AttributeRefAttrPtr aRAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 261         aSubFeature->attribute(SketchPlugin_ConstraintRigid::ENTITY_A()));
 262     if (aRefAttr->isObject()) {
 263       if (aRefAttr->object() == aRAttr->object()) {
 264         ObjectPtr anObject = aRefAttr->object();
 265         std::string aName = anObject.get() ? anObject->data()->name() : "";
 266         theError = "The object %1 has been already fixed.";
 267         theError.arg(aName);
 268         return false;
 269       }
 270     }
 271     else if (aRefAttr->attr() == aRAttr->attr()) {
 272       AttributePtr anAttribute = aRefAttr->attr();
 273       std::string aName = anAttribute.get() ? anAttribute->id() : "";
 274       theError = "The attribute %1 has been already fixed.";
 275       theError.arg(aName);
 276       return false;
 277     }
 278   }
 279   return true;
 280 }
 281
 282 bool SketchPlugin_EqualAttrValidator::isValid(const AttributePtr& theAttribute,
 283                                               const std::list<std::string>& theArguments,
 284                                               Events_InfoMessage& theError) const
 285 {
 286   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 287     theError = "The attribute with the %1 type is not processed";
 288     theError.arg(theAttribute->attributeType());
 289     return false;
 290   }
 291
 292   std::string aParamA = theArguments.front();
 293   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 294   AttributeRefAttrPtr aRefAttr[2];
 295   aRefAttr[0] = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 296   aRefAttr[1] = aFeature->data()->refattr(aParamA);
 297
 298   if (!aRefAttr[0]->isObject() || !aRefAttr[1]->isObject()) {
 299     theError = "Attributes can not be used in equal constraint";
 300     return false;
 301   }
 302
 303   std::string aType[2];
 304   std::list<std::string> anArguments;
 305   for (int i = 0; i < 2; i++) {
 306     ObjectPtr anObject = aRefAttr[i]->object();
 307     if (!anObject.get()) {
 308       theError = "An empty object is used.";
 309       return false;
 310     }
 311
 312     aFeature = ModelAPI_Feature::feature(anObject);
 313     if (!aFeature.get()) {
 314       theError = "An empty feature is used.";
 315       return false;
 316     }
 317
 318     aType[i] = aFeature->getKind();
 319     if (aFeature->getKind() != SketchPlugin_Line::ID() &&
 320         aFeature->getKind() != SketchPlugin_Circle::ID() &&
 321         aFeature->getKind() != SketchPlugin_Arc::ID()) {
 322       theError = "The %1 feature kind of attribute is wrong. It should be %2 or %3 or %4";
 323       theError.arg(aFeature->getKind()).arg(SketchPlugin_Line::ID())
 324           .arg(SketchPlugin_Circle::ID()).arg(SketchPlugin_Arc::ID());
 325       // wrong type of attribute
 326       return false;
 327     }
 328   }
 329
 330   if ((aType[0] == SketchPlugin_Line::ID() || aType[1] == SketchPlugin_Line::ID()) &&
 331       aType[0] != aType[1]) {
 332     theError = "Feature with kinds %1 and %2 can not be equal.";
 333     theError.arg(aType[0]).arg(aType[1]);
 334     return false;
 335   }
 336   return true;
 337 }
 338
 339 bool SketchPlugin_MirrorAttrValidator::isValid(const AttributePtr& theAttribute,
 340                                                const std::list<std::string>& theArguments,
 341                                                Events_InfoMessage& theError) const
 342 {
 343   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 344     theError = "The attribute with the %1 type is not processed";
 345     theError.arg(theAttribute->attributeType());
 346     return false;
 347   }
 348
 349   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 350   AttributeRefListPtr aSelAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 351
 352   AttributeRefListPtr aRefListOfMirrored = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 353       aFeature->attribute(SketchPlugin_Constraint::ENTITY_C()));
 354   std::list<ObjectPtr> aMirroredObjects = aRefListOfMirrored->list();
 355
 356   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 357     ObjectPtr aSelObject = aSelAttr->object(anInd);
 358     std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 359     std::list<ObjectPtr>::iterator aMirIter = aMirroredObjects.begin();
 360     for (; aMirIter != aMirroredObjects.end(); aMirIter++)
 361       if (aSelObject == *aMirIter) {
 362         theError = "The object %1 is a result of mirror";
 363         theError.arg(aName);
 364         return false;
 365       }
 366   }
 367   return true;
 368 }
 369
 370 bool SketchPlugin_CoincidenceAttrValidator::isValid(const AttributePtr& theAttribute,
 371                                                     const std::list<std::string>& theArguments,
 372                                                     Events_InfoMessage& theError) const
 373 {
 374   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 375     theError = "The attribute with the %1 type is not processed";
 376     theError.arg(theAttribute->attributeType());
 377     return false;
 378   }
 379
 380   // there is a check whether the feature contains a point and a linear edge or two point values
 381   std::string aParamA = theArguments.front();
 382   SessionPtr aMgr = ModelAPI_Session::get();
 383   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 384
 385   FeaturePtr aConstraint = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 386   AttributeRefAttrPtr aRefAttrA = aConstraint->data()->refattr(aParamA);
 387   if (!aRefAttrA) {
 388     theError = "The %1 attribute should be %2";
 389     theError.arg(aParamA).arg(ModelAPI_AttributeRefAttr::typeId());
 390     return false;
 391   }
 392
 393   AttributeRefAttrPtr aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 394
 395   // first attribute is a point, it may coincide with any object
 396   if (!aRefAttrA->isObject())
 397     return true;
 398   else {
 399     ObjectPtr anObject = aRefAttrA->object();
 400     if (!anObject.get()) {
 401       theError = "%1 attribute has an empty object";
 402       theError.arg(aParamA);
 403       return false;
 404     }
 405     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrA->object());
 406     if (!aFeature.get()) {
 407       theError = "%1 attribute has an empty feature";
 408       theError.arg(aParamA);
 409       return false;
 410     }
 411
 412     if (aFeature->getKind() == SketchPlugin_Point::ID())
 413       return true;
 414   }
 415
 416   // second attribute is a point, it may coincide with any object
 417   if (!aRefAttrB->isObject())
 418     return true;
 419   else {
 420     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrB->object());
 421     if (!aFeature) {
 422       theError = "%1 attribute has an empty object";
 423       theError.arg(theAttribute->id());
 424       return false;
 425     }
 426     if (aFeature->getKind() == SketchPlugin_Point::ID())
 427       return true;
 428   }
 429   theError = "There is no an attribute filled by a point";
 430   return false;
 431 }
 432
 433
 434 bool SketchPlugin_CopyValidator::isValid(const AttributePtr& theAttribute,
 435                                          const std::list<std::string>& theArguments,
 436                                          Events_InfoMessage& theError) const
 437 {
 438   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 439     theError = "The attribute with the %1 type is not processed";
 440     theError.arg(theAttribute->attributeType());
 441     return false;
 442   }
 443
 444   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 445   AttributeRefListPtr aSelAttr =
 446     std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 447
 448   AttributeRefListPtr aRefListOfInitial = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 449       aFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
 450   AttributeRefListPtr aRefListOfCopied = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 451       aFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
 452   std::list<ObjectPtr> anInitialObjects = aRefListOfInitial->list();
 453   std::list<ObjectPtr> aCopiedObjects = aRefListOfCopied->list();
 454
 455   std::list<ObjectPtr>::iterator anObjIter;
 456   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 457     ObjectPtr aSelObject = aSelAttr->object(anInd);
 458     anObjIter = anInitialObjects.begin();
 459     for (; anObjIter != anInitialObjects.end(); anObjIter++)
 460       if (aSelObject == *anObjIter)
 461         break;
 462     if (anObjIter != anInitialObjects.end())
 463       continue;
 464     anObjIter = aCopiedObjects.begin();
 465     for (; anObjIter != aCopiedObjects.end(); anObjIter++)
 466       if (aSelObject == *anObjIter) {
 467         std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 468         theError = "The object %1 is a result of copy";
 469         theError.arg(aName);
 470         return false;
 471       }
 472   }
 473   return true;
 474 }
 475
 476 bool SketchPlugin_SolverErrorValidator::isValid(const std::shared_ptr<ModelAPI_Feature>& theFeature,
 477                                                 const std::list<std::string>& theArguments,
 478                                                 Events_InfoMessage& theError) const
 479 {
 480   AttributeStringPtr aAttributeString = theFeature->string(SketchPlugin_Sketch::SOLVER_ERROR());
 481
 482   if (!aAttributeString->value().empty()) {
 483     theError = aAttributeString->value();
 484     return false;
 485   }
 486
 487   return true;
 488 }
 489
 490 bool SketchPlugin_SolverErrorValidator::isNotObligatory(std::string theFeature, std::string theAttribute)
 491 {
 492   return true;
 493 }
 494
 495 static bool hasSameTangentFeature(const std::set<AttributePtr>& theRefsList, const FeaturePtr theFeature)
 496 {
 497   for(std::set<AttributePtr>::const_iterator anIt = theRefsList.cbegin(); anIt != theRefsList.cend(); ++anIt) {
 498     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 499     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 500     if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 501       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 502         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
 503       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 504         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
 505       if(anAttrRefA.get()) {
 506         ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
 507         if(aResA.get()) {
 508           DocumentPtr aDoc = aResA->document();
 509           if(aDoc.get()) {
 510             FeaturePtr aFeatureA = aDoc->feature(aResA);
 511             if(aFeatureA.get() && aFeatureA == theFeature) {
 512               return true;
 513             }
 514           }
 515         }
 516       }
 517       if(anAttrRefB.get()) {
 518         ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
 519         if(aResB.get()) {
 520           DocumentPtr aDoc = aResB->document();
 521           if(aDoc.get()) {
 522             FeaturePtr aFeatureB = aDoc->feature(aResB);
 523             if(aFeatureB.get() && aFeatureB == theFeature) {
 524               return true;
 525             }
 526           }
 527         }
 528       }
 529     }
 530   }
 531   return false;
 532 }
 533
 534 bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
 535                                                  const std::list<std::string>& theArguments,
 536                                                  Events_InfoMessage& theError) const
 537 {
 538   std::shared_ptr<SketchPlugin_ConstraintFillet> aFilletFeature = std::dynamic_pointer_cast<SketchPlugin_ConstraintFillet>(theAttribute->owner());
 539   AttributeRefAttrListPtr aPointsRefList = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(theAttribute);
 540   if(aPointsRefList->size() == 0) {
 541     theError = "Error: List of points is empty.";
 542     return false;
 543   }
 544
 545   std::map<AttributePtr, SketchPlugin_ConstraintFillet::FilletFeatures> aPointsFeaturesMap = aFilletFeature->pointsFeaturesMap();
 546   std::set<AttributePtr> aSetOfPointsOnResultEdges;
 547   for(std::map<AttributePtr, SketchPlugin_ConstraintFillet::FilletFeatures>::iterator aPointsIter = aPointsFeaturesMap.begin();
 548       aPointsIter != aPointsFeaturesMap.end();
 549       ++aPointsIter) {
 550     const SketchPlugin_ConstraintFillet::FilletFeatures& aFeatures = aPointsIter->second;
 551     const std::list<FeaturePtr>& aResultEdges = aFeatures.resultEdges;
 552     for(std::list<FeaturePtr>::const_iterator aResultIter = aResultEdges.cbegin();
 553         aResultIter != aResultEdges.cend();
 554         ++aResultIter) {
 555       FeaturePtr aResultFeature = *aResultIter;
 556       if(aResultFeature->getKind() == SketchPlugin_Line::ID()) {
 557         aSetOfPointsOnResultEdges.insert(aResultFeature->attribute(SketchPlugin_Line::START_ID()));
 558         aSetOfPointsOnResultEdges.insert(aResultFeature->attribute(SketchPlugin_Line::END_ID()));
 559       } else if(aResultFeature->getKind() == SketchPlugin_Arc::ID()) {
 560         aSetOfPointsOnResultEdges.insert(aResultFeature->attribute(SketchPlugin_Arc::START_ID()));
 561         aSetOfPointsOnResultEdges.insert(aResultFeature->attribute(SketchPlugin_Arc::END_ID()));
 562       }
 563     }
 564   }
 565
 566   std::list<std::pair<ObjectPtr, AttributePtr>> aPointsList = aPointsRefList->list();
 567   for(std::list<std::pair<ObjectPtr, AttributePtr>>::const_iterator aPointsIt = aPointsList.cbegin(); aPointsIt != aPointsList.cend(); aPointsIt++) {
 568     ObjectPtr anObject = (*aPointsIt).first;
 569     AttributePtr aPointAttribute = (*aPointsIt).second;
 570     if (!aPointAttribute.get())
 571         return false;
 572     std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
 573
 574     // If we alredy have some result then:
 575     // - if it is the same point all ok, just skip it
 576     // - if it is point on the fillet result edge then it is not valid
 577     if(!aPointsFeaturesMap.empty()) {
 578       if(aPointsFeaturesMap.find(aPointAttribute) != aPointsFeaturesMap.end()) {
 579         continue;
 580       }
 581
 582       // Check that selected point not on the one of the fillet result edge.
 583       if(aSetOfPointsOnResultEdges.find(aPointAttribute) != aSetOfPointsOnResultEdges.end()) {
 584         return false;
 585       }
 586     }
 587
 588     // Obtain constraint coincidence for the fillet point.
 589     const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
 590     FeaturePtr aConstraintCoincidence;
 591     for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin(); anIt != aRefsList.cend(); ++anIt) {
 592       std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 593       FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 594       if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 595         AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 596           aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 597         AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 598           aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 599         if(anAttrRefA.get() && !anAttrRefA->isObject()) {
 600           AttributePtr anAttrA = anAttrRefA->attr();
 601           if(aPointAttribute == anAttrA) {
 602             aConstraintCoincidence = aConstrFeature;
 603             break;
 604           }
 605         }
 606         if(anAttrRefB.get() && !anAttrRefB->isObject()) {
 607           AttributePtr anAttrB = anAttrRefB->attr();
 608           if(aPointAttribute == anAttrB) {
 609             aConstraintCoincidence = aConstrFeature;
 610             break;
 611           }
 612         }
 613       }
 614     }
 615
 616     if(!aConstraintCoincidence.get()) {
 617       theError = "Error: one of the selected point does not have coicidence.";
 618       return false;
 619     }
 620
 621     // Get coincides from constraint.
 622     std::set<FeaturePtr> aCoinsides;
 623     SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 624                                          SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 625                                          aCoinsides);
 626     SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 627                                          SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 628                                          aCoinsides);
 629
 630     // Remove points from set of coincides.
 631     std::set<FeaturePtr> aNewSetOfCoincides;
 632     for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin(); anIt != aCoinsides.end(); ++anIt) {
 633       if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
 634          (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
 635            continue;
 636       }
 637       if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
 638         AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 639         std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
 640         double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
 641         if(aDistSelectedArcCenter < tolerance) {
 642           continue;
 643         }
 644       }
 645       aNewSetOfCoincides.insert(*anIt);
 646     }
 647     aCoinsides = aNewSetOfCoincides;
 648
 649     // If we still have more than two coincides remove auxilary entities from set of coincides.
 650     if(aCoinsides.size() > 2) {
 651       aNewSetOfCoincides.clear();
 652       for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin(); anIt != aCoinsides.end(); ++anIt) {
 653         if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 654           aNewSetOfCoincides.insert(*anIt);
 655         }
 656       }
 657       aCoinsides = aNewSetOfCoincides;
 658     }
 659
 660     if(aCoinsides.size() != 2) {
 661       theError = "Error: One of the selected points does not have two suitable edges for fillet.";
 662       return false;
 663     }
 664
 665     // Check that selected edges don't have tangent constraint.
 666     std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 667     FeaturePtr aFirstFeature = *anIt++;
 668     FeaturePtr aSecondFeature = *anIt;
 669     const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
 670     if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
 671       theError = "Error: Edges in selected point has tangent constraint.";
 672       return false;
 673     }
 674
 675     std::list<ResultPtr> aFirstResults = aFirstFeature->results();
 676     for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin(); aResIt != aFirstResults.end(); ++aResIt) {
 677       ResultPtr aRes = *aResIt;
 678       const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
 679       if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
 680         theError = "Error: Edges in selected point has tangent constraint.";
 681         return false;
 682       }
 683     }
 684
 685     // Check that lines not collinear
 686     if(aFirstFeature->getKind() == SketchPlugin_Line::ID() && aSecondFeature->getKind() == SketchPlugin_Line::ID()) {
 687       std::string aStartAttr = SketchPlugin_Line::START_ID();
 688       std::string anEndAttr = SketchPlugin_Line::END_ID();
 689       std::shared_ptr<GeomAPI_Pnt2d> aFirstStartPnt, aFirstEndPnt, aSecondStartPnt, aSecondEndPnt;
 690       aFirstStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aFirstFeature->attribute(aStartAttr))->pnt();
 691       aFirstEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aFirstFeature->attribute(anEndAttr))->pnt();
 692       aSecondStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aSecondFeature->attribute(aStartAttr))->pnt();
 693       aSecondEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aSecondFeature->attribute(anEndAttr))->pnt();
 694       double aCheck1 = fabs((aFirstEndPnt->x() - aFirstStartPnt->x()) * (aSecondStartPnt->y() - aFirstStartPnt->y()) -
 695         (aSecondStartPnt->x() - aFirstStartPnt->x()) * (aFirstEndPnt->y() - aFirstStartPnt->y()));
 696       double aCheck2 = fabs((aFirstEndPnt->x() - aFirstStartPnt->x()) * (aSecondEndPnt->y() - aFirstStartPnt->y()) -
 697         (aSecondEndPnt->x() - aFirstStartPnt->x()) * (aFirstEndPnt->y() - aFirstStartPnt->y()));
 698       if(aCheck1 < 1.e-7 && aCheck2 < 1.e-7) {
 699         return false;
 700       }
 701     }
 702   }
 703
 704   return true;
 705 }
 706
 707 bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
 708                                                     const std::list<std::string>& theArguments,
 709                                                     Events_InfoMessage& theError) const
 710 {
 711   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 712     theError = "The attribute with the %1 type is not processed";
 713     theError.arg(theAttribute->attributeType());
 714     return false;
 715   }
 716
 717   // there is a check whether the feature contains a point and a linear edge or two point values
 718   std::string aParamA = theArguments.front();
 719   SessionPtr aMgr = ModelAPI_Session::get();
 720   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 721
 722   FeaturePtr anAttributeFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 723   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 724   AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 725
 726   AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
 727   int aNbPoints = 0;
 728   int aNbLines = 0;
 729   for (int i = 0; i < 2; ++i) {
 730     if (!aRefAttrs[i]->isObject())
 731       ++aNbPoints;
 732     else {
 733       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
 734       if (!aFeature) {
 735         if (aNbPoints + aNbLines != 0)
 736           return true;
 737         else continue;
 738       }
 739
 740       if (aFeature->getKind() == SketchPlugin_Point::ID())
 741         ++aNbPoints;
 742       else if (aFeature->getKind() == SketchPlugin_Line::ID())
 743         ++aNbLines;
 744     }
 745   }
 746
 747   if (aNbPoints != 1 || aNbLines != 1) {
 748     theError = "Middle point constraint allows points and lines only";
 749     return false;
 750   }
 751   return true;
 752 }
 753
 754 bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
 755                                                     const std::list<std::string>& /*theArguments*/,
 756                                                     Events_InfoMessage& theError) const
 757 {
 758   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 759     theError = "The attribute with the %1 type is not processed";
 760     theError.arg(theAttribute->attributeType());
 761     return false;
 762   }
 763   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 764   AttributePtr anAttr = aRefAttr->attr();
 765   if (!anAttr) {
 766     theError = "The attribute %1 should be a point";
 767     theError.arg(theAttribute->id());
 768     return false;
 769   }
 770
 771   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 772   const std::string& aFeatureType = anAttrFeature->getKind();
 773   if (aFeatureType == SketchPlugin_Arc::ID()) {
 774     // selected point should not be a center of arc
 775     const std::string& aPntId = anAttr->id();
 776     if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
 777       theError = "The attribute %1 is not supported";
 778       theError.arg(aPntId);
 779       return false;
 780     }
 781   }
 782   else if (aFeatureType == SketchPlugin_Line::ID()) {
 783     // selected point should be bound point of line
 784     const std::string& aPntId = anAttr->id();
 785     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 786       theError = "The attribute %1 is not supported";
 787       theError.arg(aPntId);
 788       return false;
 789     }
 790   }
 791   else {
 792     theError = "Unable to build tangent arc on %1";
 793     theError.arg(anAttrFeature->getKind());
 794     return false;
 795   }
 796
 797   // Check the tangent point is equal to arc end
 798   FeaturePtr anArc = std::dynamic_pointer_cast<ModelAPI_Feature>(aRefAttr->owner());
 799   std::shared_ptr<GeomDataAPI_Point2D> anEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 800       anArc->attribute(SketchPlugin_Arc::END_ID()));
 801   if (anEndPoint->isInitialized()) {
 802     std::shared_ptr<GeomDataAPI_Point2D> aTangPt =
 803         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr);
 804     if (aTangPt->pnt()->distance(anEndPoint->pnt()) < tolerance) {
 805       theError = "Unable to build arc on same points";
 806       return false;
 807     }
 808   }
 809
 810   return true;
 811 }
 812
 813 bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
 814                                                  const std::list<std::string>& theArguments,
 815                                                  Events_InfoMessage& theError) const
 816 {
 817   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 818     theError = "The attribute with the %1 type is not processed";
 819     theError.arg(theAttribute->attributeType());
 820     return false;
 821   }
 822   AttributeSelectionPtr aLineAttr =
 823                               std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 824   std::shared_ptr<GeomAPI_Edge> anEdge;
 825   if(aLineAttr && aLineAttr->value() && aLineAttr->value()->isEdge()) {
 826     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->value()));
 827   } else if(aLineAttr->context() && aLineAttr->context()->shape() && aLineAttr->context()->shape()->isEdge()) {
 828     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->context()->shape()));
 829   }
 830
 831   if (!anEdge || !anEdge->isLine()) {
 832     theError = "The attribute %1 should be a line";
 833     theError.arg(theAttribute->id());
 834     return false;
 835   }
 836
 837   std::shared_ptr<GeomAPI_Dir> aLineDir = anEdge->line()->direction();
 838
 839   // find a sketch
 840   std::shared_ptr<SketchPlugin_Sketch> aSketch;
 841   std::set<AttributePtr> aRefs = aLineAttr->owner()->data()->refsToMe();
 842   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
 843   for (; anIt != aRefs.end(); ++anIt) {
 844     CompositeFeaturePtr aComp =
 845         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
 846     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
 847       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
 848       break;
 849     }
 850   }
 851   if (!aSketch) {
 852     theError = "There is no sketch referring to the current feature";
 853     return false;
 854   }
 855
 856   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
 857   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
 858   return fabs(aNormal->dot(aLineDir)) > tolerance * tolerance;
 859 }
 860
 861 bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
 862                                           const std::list<std::string>& theArguments,
 863                                           Events_InfoMessage& theError) const
 864 {
 865   bool aValid = false;
 866
 867   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 868     theError = "The attribute with the %1 type is not processed";
 869     theError.arg(theAttribute->attributeType());
 870     return aValid;
 871   }
 872   AttributeReferencePtr aFeatureAttr =
 873             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 874
 875   ObjectPtr anAttrObject = aFeatureAttr->value();
 876   FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
 877   if (!anAttrFeature)
 878     return aValid;
 879
 880   std::string aKind = anAttrFeature->getKind();
 881   if (aKind == SketchPlugin_Line::ID() ||
 882       aKind == SketchPlugin_Arc::ID() ||
 883       aKind == SketchPlugin_Circle::ID()) {
 884
 885     std::set<GeomShapePtr> anEdgeShapes;
 886     ModelAPI_Tools::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
 887     if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
 888       return aValid;
 889
 890     // coincidences to the feature
 891     std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
 892     ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature, SketchPlugin_ConstraintCoincidence::ID(),
 893                          aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
 894
 895     GeomShapePtr anAttrShape = *anEdgeShapes.begin();
 896     std::shared_ptr<SketchPlugin_Feature> aSFeature =
 897                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
 898     SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 899
 900     std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
 901     std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
 902         aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
 903     std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 904         aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
 905     std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 906         aData->attribute(SketchPlugin_Sketch::NORM_ID()));
 907     std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
 908
 909     std::list<std::shared_ptr<GeomAPI_Pnt> > aPoints;
 910     std::map<std::shared_ptr<GeomDataAPI_Point2D>, std::shared_ptr<GeomAPI_Pnt> > aPointToAttributes;
 911     ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
 912                                                 aX->dir(), aDirY, aPoints, aPointToAttributes);
 913
 914     int aCoincidentToFeature = (int)aPoints.size();
 915     if (aKind == SketchPlugin_Circle::ID())
 916       aValid = aCoincidentToFeature >= 2;
 917     else
 918       aValid = aCoincidentToFeature >= 1;
 919   }
 920
 921   return aValid;
 922 }
 923
 924 bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
 925                                                const std::list<std::string>& theArguments,
 926                                                Events_InfoMessage& theError) const
 927 {
 928   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 929     theError = "The attribute with the %1 type is not processed";
 930     theError.arg(theAttribute->attributeType());
 931     return false;
 932   }
 933
 934   AttributeSelectionPtr aFeatureAttr =
 935       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 936   std::shared_ptr<GeomAPI_Edge> anEdge;
 937   if (aFeatureAttr.get()) {
 938     GeomShapePtr aVal = aFeatureAttr->value();
 939     ResultPtr aRes = aFeatureAttr->context();
 940     if(aFeatureAttr->value() && aFeatureAttr->value()->isEdge()) {
 941       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->value()));
 942     } else if(aFeatureAttr->context() && aFeatureAttr->context()->shape() &&
 943               aFeatureAttr->context()->shape()->isEdge()) {
 944       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->context()->shape()));
 945     }
 946   }
 947   if (!anEdge) {
 948     theError = "The attribute %1 should be an edge";
 949     theError.arg(theAttribute->id());
 950     return false;
 951   }
 952
 953   // find a sketch
 954   std::shared_ptr<SketchPlugin_Sketch> aSketch;
 955   std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
 956   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
 957   for (; anIt != aRefs.end(); ++anIt) {
 958     CompositeFeaturePtr aComp =
 959         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
 960     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
 961       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
 962       break;
 963     }
 964   }
 965   if (!aSketch) {
 966     theError = "There is no sketch referring to the current feature";
 967     return false;
 968   }
 969
 970   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
 971   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
 972   std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
 973
 974   if (anEdge->isLine()) {
 975     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
 976     std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
 977     std::shared_ptr<GeomAPI_Pnt> aLineLoc = aLine->location();
 978     double aDot = aNormal->dot(aLineDir);
 979     double aDist = aLineLoc->xyz()->decreased(anOrigin->xyz())->dot(aNormal->xyz());
 980     bool aValid = (fabs(aDot) >= tolerance && fabs(aDot) < 1.0 - tolerance) ||
 981            (fabs(aDot) < tolerance && fabs(aDist) > tolerance);
 982     if (!aValid)
 983       theError = "Error: Edge is already in the sketch plane.";
 984     return aValid;
 985   }
 986   else if (anEdge->isCircle() || anEdge->isArc()) {
 987     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
 988     std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
 989     std::shared_ptr<GeomAPI_Pnt> aCircCenter = aCircle->center();
 990     double aDot = fabs(aNormal->dot(aCircNormal));
 991     double aDist = aCircCenter->xyz()->decreased(anOrigin->xyz())->dot(aNormal->xyz());
 992     bool aValid = fabs(aDot - 1.0) < tolerance * tolerance && fabs(aDist) > tolerance;
 993     if (!aValid)
 994       theError.arg(anEdge->isCircle() ? "Error: Cirlce is already in the sketch plane."
 995                                       : "Error: Arc is already in the sketch plane.");
 996     return aValid;
 997   }
 998
 999   theError = "Error: Selected object is not line, circle or arc.";
1000   return false;
1001 }