src/SketchPlugin/SketchPlugin_Validators.cpp

   1 // Copyright (C) 2014-2017  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
  18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
  19 //
  20
  21 #include "SketchPlugin_Validators.h"
  22
  23 #include "SketchPlugin_Arc.h"
  24 #include "SketchPlugin_Circle.h"
  25 #include "SketchPlugin_ConstraintCoincidence.h"
  26 #include "SketchPlugin_ConstraintDistance.h"
  27 #include "SketchPlugin_ConstraintRigid.h"
  28 #include "SketchPlugin_ConstraintTangent.h"
  29 #include "SketchPlugin_Fillet.h"
  30 #include "SketchPlugin_Line.h"
  31 #include "SketchPlugin_MacroArc.h"
  32 #include "SketchPlugin_MacroCircle.h"
  33 #include "SketchPlugin_Point.h"
  34 #include "SketchPlugin_Sketch.h"
  35 #include "SketchPlugin_Trim.h"
  36 #include "SketchPlugin_Tools.h"
  37
  38 #include "SketcherPrs_Tools.h"
  39
  40 #include <Events_InfoMessage.h>
  41
  42 #include <ModelAPI_Data.h>
  43 #include <ModelAPI_Validator.h>
  44 #include <ModelAPI_AttributeDouble.h>
  45 #include <ModelAPI_AttributeRefAttr.h>
  46
  47 #include <ModelAPI_AttributeRefAttrList.h>
  48 #include <ModelAPI_AttributeRefList.h>
  49 #include <ModelAPI_AttributeSelectionList.h>
  50 #include <ModelAPI_AttributeString.h>
  51 #include <ModelAPI_Session.h>
  52 #include <ModelAPI_Tools.h>
  53 #include <ModelAPI_ResultConstruction.h>
  54
  55 #include <ModelGeomAlgo_Point2D.h>
  56 #include <ModelGeomAlgo_Shape.h>
  57
  58 #include <GeomAlgoAPI_EdgeBuilder.h>
  59 #include <GeomAlgoAPI_ShapeTools.h>
  60
  61 #include <GeomAPI_Circ.h>
  62 #include <GeomAPI_Dir2d.h>
  63 #include <GeomAPI_Lin.h>
  64 #include <GeomAPI_Edge.h>
  65 #include <GeomAPI_Vertex.h>
  66 #include <GeomDataAPI_Point2D.h>
  67
  68 #include <algorithm>
  69 #include <cmath>
  70
  71 const double tolerance = 1.e-7;
  72
  73 bool SketchPlugin_DistanceAttrValidator::isValid(const AttributePtr& theAttribute,
  74                                                  const std::list<std::string>& theArguments,
  75                                                  Events_InfoMessage& theError) const
  76 {
  77   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
  78     theError = "The attribute with the %1 type is not processed";
  79     theError.arg(theAttribute->attributeType());
  80     return false;
  81   }
  82
  83   // there is a check whether the feature contains a point and a linear edge or two point values
  84   std::string aParamA = theArguments.front();
  85   SessionPtr aMgr = ModelAPI_Session::get();
  86   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
  87
  88   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
  89                                                                       (theAttribute);
  90   bool isObject = aRefAttr->isObject();
  91   if (!isObject) {
  92     // an attribute is a point. A point value is valid always for the distance
  93     return true;
  94   } else {
  95     // 1. check whether the references object is a linear
  96     ObjectPtr anObject = aRefAttr->object();
  97
  98     const ModelAPI_AttributeValidator* aShapeValidator =
  99       dynamic_cast<const ModelAPI_AttributeValidator*>(
 100       aFactory->validator("GeomValidators_ShapeType"));
 101     std::list<std::string> anArguments;
 102     anArguments.push_back("circle");
 103     Events_InfoMessage aCircleError;
 104     bool aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aCircleError);
 105     // the circle line is not a valid case
 106     if (aShapeValid) {
 107       theError = "Circle can not be used in distance constraint";
 108       return false;
 109     }
 110
 111     anArguments.clear();
 112     anArguments.push_back("line");
 113     Events_InfoMessage aLineError;
 114     aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aLineError);
 115     // if the attribute value is not a line, that means it is a vertex. A vertex is always valid
 116     if (aShapeValid) {
 117       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 118       // If it is a line then we have to check that first attribute id not a line
 119       std::shared_ptr<SketchPlugin_Feature> aSFeature =
 120         std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 121       SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 122       std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(aSketch);
 123       std::shared_ptr<GeomDataAPI_Point2D> aPoint = SketcherPrs_Tools::getFeaturePoint(
 124         aFeature->data(), aParamA, aPlane);
 125       if (!aPoint.get()) {
 126         theError = "One of parameters of distance constraint should be a point";
 127         return false;
 128       }
 129     }
 130   }
 131   return true;
 132 }
 133
 134 bool SketchPlugin_TangentAttrValidator::isValid(const AttributePtr& theAttribute,
 135                                                 const std::list<std::string>& theArguments,
 136                                                 Events_InfoMessage& theError) const
 137 {
 138   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 139     theError = "The attribute with the %1 type is not processed";
 140     theError.arg(theAttribute->attributeType());
 141     return false;
 142   }
 143
 144   // there is a check whether the feature contains a point and a linear edge or two point values
 145   std::string aParamA = theArguments.front();
 146   SessionPtr aMgr = ModelAPI_Session::get();
 147   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 148
 149   FeaturePtr anAttributeFeature =
 150     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 151   AttributeRefAttrPtr aRefAttr =
 152     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 153
 154   bool isObject = aRefAttr->isObject();
 155   ObjectPtr anObject = aRefAttr->object();
 156   if (isObject && anObject.get()) {
 157     FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
 158
 159     AttributeRefAttrPtr aOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 160     ObjectPtr aOtherObject = aOtherAttr->object();
 161     FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
 162     if (!aOtherFea)
 163       return true;
 164
 165     if (aRefFea->getKind() == SketchPlugin_Line::ID()) {
 166       if (aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
 167           aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
 168         theError = "It refers to a %1, but %2 is neither an %3 nor %4";
 169         theError.arg(SketchPlugin_Line::ID()).arg(aParamA)
 170             .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
 171         return false;
 172       }
 173     }
 174     else if (aRefFea->getKind() == SketchPlugin_Arc::ID() ||
 175              aRefFea->getKind() == SketchPlugin_Circle::ID()) {
 176       if (aOtherFea->getKind() != SketchPlugin_Line::ID() &&
 177           aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
 178           aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
 179         theError = "It refers to an %1, but %2 is not a %3 or an %4 or a %5";
 180         theError.arg(SketchPlugin_Arc::ID()).arg(aParamA)
 181             .arg(SketchPlugin_Line::ID()).arg(SketchPlugin_Arc::ID())
 182             .arg(SketchPlugin_Circle::ID());
 183         return false;
 184       }
 185     }
 186     else {
 187       theError = "It refers to %1, but should refer to %2 or %3 or %4";
 188       theError.arg(aRefFea->getKind()).arg(SketchPlugin_Line::ID())
 189           .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
 190       return false;
 191     }
 192     return true;
 193   }
 194   else {
 195     theError = "It uses an empty object";
 196     return false;
 197   }
 198
 199   return true;
 200 }
 201
 202 bool SketchPlugin_NotFixedValidator::isValid(const AttributePtr& theAttribute,
 203                                              const std::list<std::string>& theArguments,
 204                                              Events_InfoMessage& theError) const
 205 {
 206   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 207     theError = "The attribute with the %1 type is not processed";
 208     theError.arg(theAttribute->attributeType());
 209     return false;
 210   }
 211
 212   std::shared_ptr<SketchPlugin_Feature> aFeature =
 213       std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 214   if (!aFeature)
 215     return true;
 216
 217   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 218
 219   SketchPlugin_Sketch* aSketch = aFeature->sketch();
 220   int aNbFeatures = aSketch->numberOfSubs();
 221   for (int anInd = 0; anInd < aNbFeatures; anInd++) {
 222     FeaturePtr aSubFeature = aSketch->subFeature(anInd);
 223     if (aSubFeature->getKind() != SketchPlugin_ConstraintRigid::ID() || aSubFeature == aFeature)
 224       continue;
 225     AttributeRefAttrPtr aRAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 226         aSubFeature->attribute(SketchPlugin_ConstraintRigid::ENTITY_A()));
 227     if (aRefAttr->isObject()) {
 228       if (aRefAttr->object() == aRAttr->object()) {
 229         ObjectPtr anObject = aRefAttr->object();
 230         std::string aName = anObject.get() ? anObject->data()->name() : "";
 231         theError = "The object %1 has been already fixed.";
 232         theError.arg(aName);
 233         return false;
 234       }
 235     }
 236     else if (aRefAttr->attr() == aRAttr->attr()) {
 237       AttributePtr anAttribute = aRefAttr->attr();
 238       std::string aName = anAttribute.get() ? anAttribute->id() : "";
 239       theError = "The attribute %1 has been already fixed.";
 240       theError.arg(aName);
 241       return false;
 242     }
 243   }
 244   return true;
 245 }
 246
 247 bool SketchPlugin_EqualAttrValidator::isValid(const AttributePtr& theAttribute,
 248                                               const std::list<std::string>& theArguments,
 249                                               Events_InfoMessage& theError) const
 250 {
 251   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 252     theError = "The attribute with the %1 type is not processed";
 253     theError.arg(theAttribute->attributeType());
 254     return false;
 255   }
 256
 257   std::string aParamA = theArguments.front();
 258   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 259   AttributeRefAttrPtr aRefAttr[2];
 260   aRefAttr[0] = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 261   aRefAttr[1] = aFeature->data()->refattr(aParamA);
 262
 263   if (!aRefAttr[0]->isObject() || !aRefAttr[1]->isObject()) {
 264     theError = "Attributes can not be used in equal constraint";
 265     return false;
 266   }
 267
 268   std::string aType[2];
 269   std::list<std::string> anArguments;
 270   for (int i = 0; i < 2; i++) {
 271     ObjectPtr anObject = aRefAttr[i]->object();
 272     if (!anObject.get()) {
 273       theError = "An empty object is used.";
 274       return false;
 275     }
 276
 277     aFeature = ModelAPI_Feature::feature(anObject);
 278     if (!aFeature.get()) {
 279       theError = "An empty feature is used.";
 280       return false;
 281     }
 282
 283     aType[i] = aFeature->getKind();
 284     if (aFeature->getKind() != SketchPlugin_Line::ID() &&
 285         aFeature->getKind() != SketchPlugin_Circle::ID() &&
 286         aFeature->getKind() != SketchPlugin_Arc::ID()) {
 287       theError = "The %1 feature kind of attribute is wrong. It should be %2 or %3 or %4";
 288       theError.arg(aFeature->getKind()).arg(SketchPlugin_Line::ID())
 289           .arg(SketchPlugin_Circle::ID()).arg(SketchPlugin_Arc::ID());
 290       // wrong type of attribute
 291       return false;
 292     }
 293   }
 294
 295   if ((aType[0] == SketchPlugin_Line::ID() || aType[1] == SketchPlugin_Line::ID()) &&
 296       aType[0] != aType[1]) {
 297     theError = "Feature with kinds %1 and %2 can not be equal.";
 298     theError.arg(aType[0]).arg(aType[1]);
 299     return false;
 300   }
 301   return true;
 302 }
 303
 304 bool SketchPlugin_MirrorAttrValidator::isValid(const AttributePtr& theAttribute,
 305                                                const std::list<std::string>& theArguments,
 306                                                Events_InfoMessage& theError) const
 307 {
 308   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 309     theError = "The attribute with the %1 type is not processed";
 310     theError.arg(theAttribute->attributeType());
 311     return false;
 312   }
 313
 314   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 315   AttributeRefListPtr aSelAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 316
 317   AttributeRefListPtr aRefListOfMirrored = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 318       aFeature->attribute(SketchPlugin_Constraint::ENTITY_C()));
 319   std::list<ObjectPtr> aMirroredObjects = aRefListOfMirrored->list();
 320
 321   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 322     ObjectPtr aSelObject = aSelAttr->object(anInd);
 323     std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 324     std::list<ObjectPtr>::iterator aMirIter = aMirroredObjects.begin();
 325     for (; aMirIter != aMirroredObjects.end(); aMirIter++)
 326       if (aSelObject == *aMirIter) {
 327         theError = "The object %1 is a result of mirror";
 328         theError.arg(aName);
 329         return false;
 330       }
 331   }
 332   return true;
 333 }
 334
 335 bool SketchPlugin_CoincidenceAttrValidator::isValid(const AttributePtr& theAttribute,
 336                                                     const std::list<std::string>& theArguments,
 337                                                     Events_InfoMessage& theError) const
 338 {
 339   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 340     theError = "The attribute with the %1 type is not processed";
 341     theError.arg(theAttribute->attributeType());
 342     return false;
 343   }
 344
 345   // there is a check whether the feature contains a point and a linear edge or two point values
 346   std::string aParamA = theArguments.front();
 347   SessionPtr aMgr = ModelAPI_Session::get();
 348   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 349
 350   FeaturePtr aConstraint = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 351   AttributeRefAttrPtr aRefAttrA = aConstraint->data()->refattr(aParamA);
 352   if (!aRefAttrA) {
 353     theError = "The %1 attribute should be %2";
 354     theError.arg(aParamA).arg(ModelAPI_AttributeRefAttr::typeId());
 355     return false;
 356   }
 357
 358   AttributeRefAttrPtr aRefAttrB =
 359     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 360
 361   // first attribute is a point, it may coincide with any object
 362   if (!aRefAttrA->isObject())
 363     return true;
 364   else {
 365     ObjectPtr anObject = aRefAttrA->object();
 366     if (!anObject.get()) {
 367       theError = "%1 attribute has an empty object";
 368       theError.arg(aParamA);
 369       return false;
 370     }
 371     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrA->object());
 372     if (!aFeature.get()) {
 373       theError = "%1 attribute has an empty feature";
 374       theError.arg(aParamA);
 375       return false;
 376     }
 377
 378     if (aFeature->getKind() == SketchPlugin_Point::ID())
 379       return true;
 380   }
 381
 382   // second attribute is a point, it may coincide with any object
 383   if (!aRefAttrB->isObject())
 384     return true;
 385   else {
 386     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrB->object());
 387     if (!aFeature) {
 388       theError = "%1 attribute has an empty object";
 389       theError.arg(theAttribute->id());
 390       return false;
 391     }
 392     if (aFeature->getKind() == SketchPlugin_Point::ID())
 393       return true;
 394   }
 395   theError = "There is no an attribute filled by a point";
 396   return false;
 397 }
 398
 399
 400 bool SketchPlugin_CopyValidator::isValid(const AttributePtr& theAttribute,
 401                                          const std::list<std::string>& theArguments,
 402                                          Events_InfoMessage& theError) const
 403 {
 404   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 405     theError = "The attribute with the %1 type is not processed";
 406     theError.arg(theAttribute->attributeType());
 407     return false;
 408   }
 409
 410   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 411   AttributeRefListPtr aSelAttr =
 412     std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 413
 414   AttributeRefListPtr aRefListOfInitial = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 415       aFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
 416   AttributeRefListPtr aRefListOfCopied = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 417       aFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
 418   std::list<ObjectPtr> anInitialObjects = aRefListOfInitial->list();
 419   std::list<ObjectPtr> aCopiedObjects = aRefListOfCopied->list();
 420
 421   std::list<ObjectPtr>::iterator anObjIter;
 422   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 423     ObjectPtr aSelObject = aSelAttr->object(anInd);
 424     anObjIter = anInitialObjects.begin();
 425     for (; anObjIter != anInitialObjects.end(); anObjIter++)
 426       if (aSelObject == *anObjIter)
 427         break;
 428     if (anObjIter != anInitialObjects.end())
 429       continue;
 430     anObjIter = aCopiedObjects.begin();
 431     for (; anObjIter != aCopiedObjects.end(); anObjIter++)
 432       if (aSelObject == *anObjIter) {
 433         std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 434         theError = "The object %1 is a result of copy";
 435         theError.arg(aName);
 436         return false;
 437       }
 438   }
 439   return true;
 440 }
 441
 442 bool SketchPlugin_SolverErrorValidator::isValid(
 443   const std::shared_ptr<ModelAPI_Feature>& theFeature,
 444   const std::list<std::string>& theArguments,
 445   Events_InfoMessage& theError) const
 446 {
 447   AttributeStringPtr aAttributeString = theFeature->string(SketchPlugin_Sketch::SOLVER_ERROR());
 448
 449   if (!aAttributeString->value().empty()) {
 450     theError = aAttributeString->value();
 451     return false;
 452   }
 453
 454   return true;
 455 }
 456
 457 bool SketchPlugin_SolverErrorValidator::isNotObligatory(std::string theFeature,
 458                                                         std::string theAttribute)
 459 {
 460   return true;
 461 }
 462
 463 static bool hasSameTangentFeature(const std::set<AttributePtr>& theRefsList,
 464                                   const FeaturePtr theFeature)
 465 {
 466   for(std::set<AttributePtr>::const_iterator
 467       anIt = theRefsList.cbegin(); anIt != theRefsList.cend(); ++anIt) {
 468     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 469     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 470     if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 471       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 472         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
 473       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 474         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
 475       if(anAttrRefA.get()) {
 476         ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
 477         if(aResA.get()) {
 478           DocumentPtr aDoc = aResA->document();
 479           if(aDoc.get()) {
 480             FeaturePtr aFeatureA = aDoc->feature(aResA);
 481             if(aFeatureA.get() && aFeatureA == theFeature) {
 482               return true;
 483             }
 484           }
 485         }
 486       }
 487       if(anAttrRefB.get()) {
 488         ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
 489         if(aResB.get()) {
 490           DocumentPtr aDoc = aResB->document();
 491           if(aDoc.get()) {
 492             FeaturePtr aFeatureB = aDoc->feature(aResB);
 493             if(aFeatureB.get() && aFeatureB == theFeature) {
 494               return true;
 495             }
 496           }
 497         }
 498       }
 499     }
 500   }
 501   return false;
 502 }
 503
 504 static bool isPointPointCoincidence(const FeaturePtr& theCoincidence)
 505 {
 506   AttributeRefAttrPtr aRefAttr[2] = {
 507       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_A()),
 508       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_B())
 509   };
 510
 511   bool arePoints = true;
 512   for (int i = 0; i < 2 && arePoints; ++i) {
 513     if (aRefAttr[i]->isObject()) {
 514       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 515       arePoints = aFeature.get() && aFeature->getKind() == SketchPlugin_Point::ID();
 516     } else
 517       arePoints = aRefAttr[i]->attr().get() != NULL;
 518   }
 519   return arePoints;
 520 }
 521
 522 bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
 523                                                  const std::list<std::string>& theArguments,
 524                                                  Events_InfoMessage& theError) const
 525 {
 526   AttributeRefAttrPtr aPointRefAttr =
 527     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 528   if(!aPointRefAttr.get()) {
 529     theError = "Error: Point not selected.";
 530     return false;
 531   }
 532
 533   AttributePtr aPointAttribute = aPointRefAttr->attr();
 534   if (!aPointAttribute.get()) {
 535     theError = "Error: Bad point selected.";
 536     return false;
 537   }
 538   std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt =
 539     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
 540
 541   // Obtain constraint coincidence for the fillet point.
 542   const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
 543   FeaturePtr aConstraintCoincidence;
 544   for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin();
 545       anIt != aRefsList.cend(); ++anIt) {
 546     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 547     FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 548     if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 549       if (!isPointPointCoincidence(aConstrFeature))
 550         continue;
 551
 552       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 553         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 554       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 555         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 556
 557       AttributePtr anAttrA = anAttrRefA->attr();
 558       if(aPointAttribute == anAttrA) {
 559         aConstraintCoincidence = aConstrFeature;
 560         break;
 561       }
 562
 563       AttributePtr anAttrB = anAttrRefB->attr();
 564       if(aPointAttribute == anAttrB) {
 565         aConstraintCoincidence = aConstrFeature;
 566         break;
 567       }
 568     }
 569   }
 570
 571   if(!aConstraintCoincidence.get()) {
 572     theError = "Error: one of the selected point does not have coicidence.";
 573     return false;
 574   }
 575
 576   // Get coincides from constraint.
 577   std::set<FeaturePtr> aCoinsides;
 578   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 579                                         SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 580                                         aCoinsides,
 581                                         true);
 582   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 583                                         SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 584                                         aCoinsides,
 585                                         true);
 586
 587   // Remove points and external lines from set of coincides.
 588   std::set<FeaturePtr> aNewSetOfCoincides;
 589   for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 590       anIt != aCoinsides.end(); ++anIt) {
 591     std::shared_ptr<SketchPlugin_SketchEntity> aSketchEntity =
 592       std::dynamic_pointer_cast<SketchPlugin_SketchEntity>(*anIt);
 593     if(aSketchEntity.get() && (aSketchEntity->isCopy() || aSketchEntity->isExternal())) {
 594       continue;
 595     }
 596     if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
 597         (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
 598           continue;
 599     }
 600     if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
 601       AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 602       std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt =
 603         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
 604       double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
 605       if(aDistSelectedArcCenter < tolerance) {
 606         continue;
 607       }
 608     }
 609     aNewSetOfCoincides.insert(*anIt);
 610   }
 611   aCoinsides = aNewSetOfCoincides;
 612
 613   // If we still have more than two coincides remove auxilary entities from set of coincides.
 614   if(aCoinsides.size() > 2) {
 615     aNewSetOfCoincides.clear();
 616     for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 617         anIt != aCoinsides.end(); ++anIt) {
 618       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 619         aNewSetOfCoincides.insert(*anIt);
 620       }
 621     }
 622     aCoinsides = aNewSetOfCoincides;
 623   }
 624
 625   if(aCoinsides.size() != 2) {
 626     theError = "Error: One of the selected points does not have two suitable edges for fillet.";
 627     return false;
 628   }
 629
 630   // Check that selected edges don't have tangent constraint.
 631   std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 632   FeaturePtr aFirstFeature = *anIt++;
 633   FeaturePtr aSecondFeature = *anIt;
 634   const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
 635   if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
 636     theError = "Error: Edges in selected point has tangent constraint.";
 637     return false;
 638   }
 639
 640   std::list<ResultPtr> aFirstResults = aFirstFeature->results();
 641   for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin();
 642       aResIt != aFirstResults.end(); ++aResIt) {
 643     ResultPtr aRes = *aResIt;
 644     const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
 645     if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
 646       theError = "Error: Edges in selected point has tangent constraint.";
 647       return false;
 648     }
 649   }
 650
 651   // Check the features are not tangent
 652   std::shared_ptr<GeomAPI_Shape> aFirstShape = aFirstFeature->lastResult()->shape();
 653   std::shared_ptr<GeomAPI_Shape> aSecondShape = aSecondFeature->lastResult()->shape();
 654   if (!aFirstShape || !aFirstShape->isEdge() ||
 655       !aSecondShape || !aSecondShape->isEdge()) {
 656     theError = "Error: At least on of the features is not an edge";
 657     return false;
 658   }
 659
 660   std::shared_ptr<GeomAPI_Edge> anEdge1 = std::dynamic_pointer_cast<GeomAPI_Edge>(aFirstShape);
 661   std::shared_ptr<GeomAPI_Edge> anEdge2 = std::dynamic_pointer_cast<GeomAPI_Edge>(aSecondShape);
 662
 663   static const double TOL = 1.e-7;
 664   if (anEdge1->isLine() && anEdge2->isLine()) {
 665     // Check that lines not collinear
 666     std::shared_ptr<GeomAPI_Dir> aDir1 = anEdge1->line()->direction();
 667     std::shared_ptr<GeomAPI_Dir> aDir2 = anEdge2->line()->direction();
 668     double aCross = aDir1->cross(aDir2)->squareModulus();
 669     if (aCross < TOL * TOL)
 670       return false;
 671   } else if (anEdge1->isArc() && anEdge2->isArc()) {
 672     // check the circles are not tangent
 673     std::shared_ptr<GeomAPI_Circ> aCirc1 = anEdge1->circle();
 674     std::shared_ptr<GeomAPI_Circ> aCirc2 = anEdge2->circle();
 675     double aDistCC = aCirc1->center()->distance(aCirc2->center());
 676     double aRadSum = aCirc1->radius() + aCirc2->radius();
 677     double aRadDiff = fabs(aCirc1->radius() - aCirc2->radius());
 678     if (fabs(aDistCC - aRadSum) < TOL || fabs(aDistCC - aRadDiff) < TOL)
 679       return false;
 680   } else {
 681     // check whether line and arc are tangent
 682     std::shared_ptr<GeomAPI_Circ> aCirc;
 683     std::shared_ptr<GeomAPI_Lin> aLine;
 684     if (anEdge1->isLine()) {
 685       aLine = anEdge1->line();
 686       aCirc = anEdge2->circle();
 687     } else {
 688       aCirc = anEdge1->circle();
 689       aLine = anEdge2->line();
 690     }
 691
 692     double aDistCL = aLine->distance(aCirc->center());
 693     if (fabs(aDistCL - aCirc->radius()) < TOL)
 694       return false;
 695   }
 696
 697   return true;
 698 }
 699
 700 bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
 701                                                     const std::list<std::string>& theArguments,
 702                                                     Events_InfoMessage& theError) const
 703 {
 704   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 705     theError = "The attribute with the %1 type is not processed";
 706     theError.arg(theAttribute->attributeType());
 707     return false;
 708   }
 709
 710   // there is a check whether the feature contains a point and a linear edge or two point values
 711   std::string aParamA = theArguments.front();
 712   SessionPtr aMgr = ModelAPI_Session::get();
 713   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 714
 715   FeaturePtr anAttributeFeature =
 716     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 717   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 718   AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 719
 720   AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
 721   int aNbPoints = 0;
 722   int aNbLines = 0;
 723   for (int i = 0; i < 2; ++i) {
 724     if (!aRefAttrs[i]->isObject())
 725       ++aNbPoints;
 726     else {
 727       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
 728       if (!aFeature) {
 729         if (aNbPoints + aNbLines != 0)
 730           return true;
 731         else continue;
 732       }
 733
 734       if (aFeature->getKind() == SketchPlugin_Point::ID())
 735         ++aNbPoints;
 736       else if (aFeature->getKind() == SketchPlugin_Line::ID())
 737         ++aNbLines;
 738     }
 739   }
 740
 741   if (aNbPoints != 1 || aNbLines != 1) {
 742     theError = "Middle point constraint allows points and lines only";
 743     return false;
 744   }
 745   return true;
 746 }
 747
 748 bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
 749                                                     const std::list<std::string>& /*theArguments*/,
 750                                                     Events_InfoMessage& theError) const
 751 {
 752   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 753     theError = "The attribute with the %1 type is not processed";
 754     theError.arg(theAttribute->attributeType());
 755     return false;
 756   }
 757   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 758   AttributePtr anAttr = aRefAttr->attr();
 759   if (!anAttr) {
 760     theError = "The attribute %1 should be a point";
 761     theError.arg(theAttribute->id());
 762     return false;
 763   }
 764
 765   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 766   const std::string& aFeatureType = anAttrFeature->getKind();
 767   if (aFeatureType == SketchPlugin_Arc::ID()) {
 768     // selected point should not be a center of arc
 769     const std::string& aPntId = anAttr->id();
 770     if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
 771       theError = "The attribute %1 is not supported";
 772       theError.arg(aPntId);
 773       return false;
 774     }
 775   }
 776   else if (aFeatureType == SketchPlugin_Line::ID()) {
 777     // selected point should be bound point of line
 778     const std::string& aPntId = anAttr->id();
 779     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 780       theError = "The attribute %1 is not supported";
 781       theError.arg(aPntId);
 782       return false;
 783     }
 784   }
 785   else {
 786     theError = "Unable to build tangent arc on %1";
 787     theError.arg(anAttrFeature->getKind());
 788     return false;
 789   }
 790
 791   return true;
 792 }
 793
 794 bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
 795                                                  const std::list<std::string>& theArguments,
 796                                                  Events_InfoMessage& theError) const
 797 {
 798   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 799     theError = "The attribute with the %1 type is not processed";
 800     theError.arg(theAttribute->attributeType());
 801     return false;
 802   }
 803   AttributeSelectionPtr aLineAttr =
 804                        std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 805   std::shared_ptr<GeomAPI_Edge> anEdge;
 806   if(aLineAttr && aLineAttr->value() && aLineAttr->value()->isEdge()) {
 807     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->value()));
 808   } else if(aLineAttr->context() &&
 809             aLineAttr->context()->shape() && aLineAttr->context()->shape()->isEdge()) {
 810     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->context()->shape()));
 811   }
 812
 813   if (!anEdge || !anEdge->isLine()) {
 814     theError = "The attribute %1 should be a line";
 815     theError.arg(theAttribute->id());
 816     return false;
 817   }
 818
 819   std::shared_ptr<GeomAPI_Dir> aLineDir = anEdge->line()->direction();
 820
 821   // find a sketch
 822   std::shared_ptr<SketchPlugin_Sketch> aSketch;
 823   std::set<AttributePtr> aRefs = aLineAttr->owner()->data()->refsToMe();
 824   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
 825   for (; anIt != aRefs.end(); ++anIt) {
 826     CompositeFeaturePtr aComp =
 827         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
 828     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
 829       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
 830       break;
 831     }
 832   }
 833   if (!aSketch) {
 834     theError = "There is no sketch referring to the current feature";
 835     return false;
 836   }
 837
 838   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
 839   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
 840   return fabs(aNormal->dot(aLineDir)) > tolerance * tolerance;
 841 }
 842
 843 bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
 844                                           const std::list<std::string>& theArguments,
 845                                           Events_InfoMessage& theError) const
 846 {
 847   bool aValid = false;
 848
 849   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 850     theError = "The attribute with the %1 type is not processed";
 851     theError.arg(theAttribute->attributeType());
 852     return aValid;
 853   }
 854   AttributeReferencePtr aFeatureAttr =
 855             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 856
 857   ObjectPtr anAttrObject = aFeatureAttr->value();
 858   FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
 859   if (!anAttrFeature)
 860     return aValid;
 861
 862   std::string aKind = anAttrFeature->getKind();
 863   if (aKind == SketchPlugin_Line::ID() ||
 864       aKind == SketchPlugin_Arc::ID() ||
 865       aKind == SketchPlugin_Circle::ID()) {
 866
 867     std::set<ResultPtr> anEdgeShapes;
 868     ModelGeomAlgo_Shape::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
 869     if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
 870       return aValid;
 871
 872     // coincidences to the feature
 873     std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
 874     ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature,
 875                         SketchPlugin_ConstraintCoincidence::ID(),
 876                         aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
 877
 878     GeomShapePtr anAttrShape = (*anEdgeShapes.begin())->shape();
 879     std::shared_ptr<SketchPlugin_Feature> aSFeature =
 880                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
 881     SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 882
 883     std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
 884     std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
 885         aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
 886     std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 887         aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
 888     std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 889         aData->attribute(SketchPlugin_Sketch::NORM_ID()));
 890     std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
 891
 892     typedef std::map<std::shared_ptr<GeomAPI_Pnt>,
 893                      std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
 894                                std::list<std::shared_ptr<ModelAPI_Object> > > > PointToRefsMap;
 895     PointToRefsMap aPointsInfo;
 896
 897     ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
 898                                                 aX->dir(), aDirY, aPointsInfo);
 899     int aCoincidentToFeature = (int)aPointsInfo.size();
 900     if (aKind == SketchPlugin_Circle::ID())
 901       aValid = aCoincidentToFeature >= 2;
 902     else
 903       aValid = aCoincidentToFeature >= 1;
 904   }
 905
 906   return aValid;
 907 }
 908
 909 bool SketchPlugin_TrimValidator::isValid(const AttributePtr& theAttribute,
 910                                          const std::list<std::string>& theArguments,
 911                                          Events_InfoMessage& theError) const
 912 {
 913   bool aValid = false;
 914
 915   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 916     theError = "The attribute with the %1 type is not processed";
 917     theError.arg(theAttribute->attributeType());
 918     return aValid;
 919   }
 920   AttributeReferencePtr aBaseObjectAttr =
 921             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 922
 923   std::shared_ptr<SketchPlugin_Feature> aTrimFeature =
 924                  std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 925
 926   ObjectPtr aBaseObject = aBaseObjectAttr->value();
 927   if (!aBaseObject) {
 928     AttributePtr aPreviewAttr = aTrimFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
 929     aBaseObjectAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
 930     aBaseObject = aBaseObjectAttr->value();
 931   }
 932
 933   FeaturePtr aBaseFeature = ModelAPI_Feature::feature(aBaseObject);
 934   if (!aBaseFeature)
 935     return aValid;
 936
 937   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 938                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(aBaseFeature);
 939   if (!aSketchFeature.get() || aSketchFeature->isCopy())
 940     return aValid;
 941
 942   std::string aKind = aBaseFeature->getKind();
 943   if (aKind != SketchPlugin_Line::ID() &&
 944       aKind != SketchPlugin_Arc::ID() &&
 945       aKind != SketchPlugin_Circle::ID())
 946     return aValid;
 947
 948   // point on feature
 949   AttributePoint2DPtr aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 950                        aTrimFeature->data()->attribute(SketchPlugin_Trim::PREVIEW_POINT()));
 951
 952   SketchPlugin_Sketch* aSketch = aTrimFeature->sketch();
 953
 954   std::shared_ptr<GeomAPI_Pnt2d> anAttributePnt2d = aPoint->pnt();
 955   std::shared_ptr<GeomAPI_Pnt> anAttributePnt = aSketch->to3D(anAttributePnt2d->x(),
 956                                                               anAttributePnt2d->y());
 957
 958   std::map<ObjectPtr, std::set<GeomShapePtr> > aCashedShapes;
 959   std::map<ObjectPtr, std::map<std::shared_ptr<GeomAPI_Pnt>,
 960            std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
 961                      std::list<std::shared_ptr<ModelAPI_Object> > > > > anObjectToPoints;
 962   SketchPlugin_Trim::fillObjectShapes(aBaseObject, aSketch->data()->owner(),
 963                                       aCashedShapes, anObjectToPoints);
 964   const std::set<GeomShapePtr>& aShapes = aCashedShapes[aBaseObject];
 965
 966   return aShapes.size() > 1;
 967 }
 968
 969 bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
 970                                                const std::list<std::string>& theArguments,
 971                                                Events_InfoMessage& theError) const
 972 {
 973   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 974     theError = "The attribute with the %1 type is not processed";
 975     theError.arg(theAttribute->attributeType());
 976     return false;
 977   }
 978
 979   AttributeSelectionPtr aFeatureAttr =
 980       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 981   std::shared_ptr<GeomAPI_Edge> anEdge;
 982   std::shared_ptr<SketchPlugin_Feature> aSketchFeature;
 983   if (aFeatureAttr.get()) {
 984     GeomShapePtr aVal = aFeatureAttr->value();
 985     ResultPtr aRes = aFeatureAttr->context();
 986     if (aVal && aVal->isVertex())
 987       return true; // vertex is always could be projected
 988     if (aVal && aVal->isEdge()) {
 989       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->value()));
 990     } else if(aRes && aRes->shape()) {
 991       if (aRes->shape()->isVertex())
 992         return true; // vertex is always could be projected
 993       else if (aRes->shape()->isEdge())
 994         anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->context()->shape()));
 995     }
 996
 997     // try to convert result to sketch feature
 998     if (aRes) {
 999       aSketchFeature =
1000         std::dynamic_pointer_cast<SketchPlugin_Feature>(ModelAPI_Feature::feature(aRes));
1001     }
1002   }
1003   if (!anEdge) {
1004     theError = "The attribute %1 should be an edge or vertex";
1005     theError.arg(theAttribute->id());
1006     return false;
1007   }
1008
1009   // find a sketch
1010   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1011   std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
1012   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1013   for (; anIt != aRefs.end(); ++anIt) {
1014     CompositeFeaturePtr aComp =
1015         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1016     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1017       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1018       break;
1019     }
1020   }
1021   if (!aSketch) {
1022     theError = "There is no sketch referring to the current feature";
1023     return false;
1024   }
1025   if (aSketchFeature && aSketch.get() == aSketchFeature->sketch()) {
1026     theError = "Unable to project feature from the same sketch";
1027     return false;
1028   }
1029
1030   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1031   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
1032   std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
1033
1034   if (anEdge->isLine()) {
1035     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1036     std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
1037     double aDot = fabs(aNormal->dot(aLineDir));
1038     bool aValid = fabs(aDot - 1.0) >= tolerance * tolerance;
1039     if (!aValid)
1040       theError = "Error: Edge is already in the sketch plane.";
1041     return aValid;
1042   }
1043   else if (anEdge->isCircle() || anEdge->isArc()) {
1044     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1045     std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
1046     double aDot = fabs(aNormal->dot(aCircNormal));
1047     bool aValid = fabs(aDot - 1.0) < tolerance * tolerance;
1048     if (!aValid)
1049       theError.arg(anEdge->isCircle() ? "Error: Cirlce is already in the sketch plane."
1050                                       : "Error: Arc is already in the sketch plane.");
1051     return aValid;
1052   }
1053
1054   theError = "Error: Selected object is not line, circle or arc.";
1055   return false;
1056 }
1057
1058
1059 static std::set<FeaturePtr> common(const std::set<FeaturePtr>& theSet1,
1060                                    const std::set<FeaturePtr>& theSet2)
1061 {
1062   std::set<FeaturePtr> aCommon;
1063   if (theSet1.empty() || theSet2.empty())
1064     return aCommon;
1065
1066   std::set<FeaturePtr>::const_iterator anIt2 = theSet2.begin();
1067   for (; anIt2 != theSet2.end(); ++anIt2)
1068     if (theSet1.find(*anIt2) != theSet1.end())
1069       aCommon.insert(*anIt2);
1070   return aCommon;
1071 }
1072
1073 bool SketchPlugin_DifferentReferenceValidator::isValid(
1074     const AttributePtr& theAttribute,
1075     const std::list<std::string>& theArguments,
1076     Events_InfoMessage& theError) const
1077 {
1078   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1079
1080   int aNbFeaturesReferred = 0;
1081   int aNbAttributesReferred = 0;
1082   std::set<FeaturePtr> aCommonReferredFeatures;
1083
1084   // find all features referred by attributes listed in theArguments
1085   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1086   for (; anArgIt != theArguments.end(); ++anArgIt) {
1087     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1088     if (!aRefAttr)
1089       continue;
1090
1091     std::set<FeaturePtr> aCoincidentFeatures;
1092     if (aRefAttr->isObject()) {
1093       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1094       if (aFeature) {
1095         aCoincidentFeatures.insert(aFeature);
1096         aNbFeaturesReferred += 1;
1097       }
1098     } else {
1099       AttributePoint2DPtr aPoint =
1100           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1101       if (aPoint) {
1102         aCoincidentFeatures = SketchPlugin_Tools::findFeaturesCoincidentToPoint(aPoint);
1103         aNbAttributesReferred += 1;
1104       }
1105     }
1106
1107     if (aCommonReferredFeatures.empty())
1108       aCommonReferredFeatures = aCoincidentFeatures;
1109     else
1110       aCommonReferredFeatures = common(aCommonReferredFeatures, aCoincidentFeatures);
1111
1112     if (aCommonReferredFeatures.empty())
1113       return true;
1114   }
1115
1116   bool isOk = aNbFeaturesReferred < 1;
1117   if (aNbFeaturesReferred == 1) {
1118     if (aCommonReferredFeatures.size() == 1) {
1119       FeaturePtr aFeature = *aCommonReferredFeatures.begin();
1120       isOk = aNbAttributesReferred <= 1 ||
1121              aFeature->getKind() == SketchPlugin_Circle::ID() ||
1122              aFeature->getKind() == SketchPlugin_Arc::ID();
1123     } else
1124       isOk = false;
1125   }
1126
1127   if (!isOk)
1128     theError = "Attributes are referred to the same feature";
1129   return isOk;
1130 }
1131
1132 bool SketchPlugin_DifferentPointReferenceValidator::isValid(
1133     const AttributePtr& theAttribute,
1134     const std::list<std::string>& theArguments,
1135     Events_InfoMessage& theError) const
1136 {
1137   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1138   std::set<AttributePoint2DPtr> aReferredCoincidentPoints;
1139
1140   // find all points referred by attributes listed in theArguments
1141   bool hasRefsToPoints = false;
1142   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1143   for (; anArgIt != theArguments.end(); ++anArgIt) {
1144     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1145     if (!aRefAttr)
1146       continue;
1147
1148     if (!aRefAttr->isObject()) {
1149       AttributePoint2DPtr aPoint =
1150           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1151       if (aReferredCoincidentPoints.empty())
1152         aReferredCoincidentPoints = SketchPlugin_Tools::findPointsCoincidentToPoint(aPoint);
1153       else if (aReferredCoincidentPoints.find(aPoint) == aReferredCoincidentPoints.end())
1154         return true; // non-coincident point has been found
1155       else
1156         hasRefsToPoints = true;
1157     }
1158   }
1159
1160   if (hasRefsToPoints)
1161     theError = "Attributes are referred to the same point";
1162   return !hasRefsToPoints;
1163 }
1164
1165 bool SketchPlugin_CirclePassedPointValidator::isValid(
1166     const AttributePtr& theAttribute,
1167     const std::list<std::string>&,
1168     Events_InfoMessage& theError) const
1169 {
1170   static const std::string aErrorMessage(
1171       "Passed point refers to the same feature as a center point");
1172
1173   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1174
1175   AttributeRefAttrPtr aCenterRef =
1176       anOwner->refattr(SketchPlugin_MacroCircle::CENTER_POINT_REF_ID());
1177   AttributeRefAttrPtr aPassedRef =
1178       anOwner->refattr(SketchPlugin_MacroCircle::PASSED_POINT_REF_ID());
1179
1180   if (!aPassedRef->isObject())
1181     return true;
1182
1183   FeaturePtr aPassedFeature = ModelAPI_Feature::feature(aPassedRef->object());
1184   if (!aPassedFeature)
1185     return true;
1186
1187   if (aCenterRef->isObject()) {
1188     if (aCenterRef->object() == aPassedRef->object()) {
1189       theError = aErrorMessage;
1190       return false;
1191     }
1192   } else {
1193     AttributePoint2DPtr aCenterPoint =
1194         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aCenterRef->attr());
1195     if (aCenterPoint) {
1196       std::set<FeaturePtr> aCoincidentFeatures =
1197           SketchPlugin_Tools::findFeaturesCoincidentToPoint(aCenterPoint);
1198       // check one of coincident features is a feature referred by passed point
1199       std::set<FeaturePtr>::const_iterator anIt = aCoincidentFeatures.begin();
1200       for(; anIt != aCoincidentFeatures.end(); ++anIt)
1201         if (*anIt == aPassedFeature) {
1202           theError = aErrorMessage;
1203           return false;
1204         }
1205     }
1206   }
1207   return true;
1208 }
1209
1210 bool SketchPlugin_ThirdPointValidator::isValid(
1211     const AttributePtr& theAttribute,
1212     const std::list<std::string>& theArguments,
1213     Events_InfoMessage& theError) const
1214 {
1215   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1216   return arePointsNotOnLine(anOwner, theError) &&
1217          arePointsNotSeparated(anOwner, theArguments, theError);
1218 }
1219
1220 static std::shared_ptr<GeomAPI_Pnt2d> toPoint(const FeaturePtr& theMacroCircle,
1221                                               const std::string& thePointAttrName,
1222                                               const std::string& theRefPointAttrName)
1223 {
1224   AttributePoint2DPtr aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1225       theMacroCircle->attribute(thePointAttrName));
1226   AttributeRefAttrPtr aRefAttr = theMacroCircle->refattr(theRefPointAttrName);
1227
1228   std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointAttr->pnt();
1229   if (aRefAttr) {
1230     if (aRefAttr->isObject()) {
1231       // project a point onto selected feature
1232       std::shared_ptr<SketchPlugin_Feature> aFeature =
1233           std::dynamic_pointer_cast<SketchPlugin_Feature>(
1234           ModelAPI_Feature::feature(aRefAttr->object()));
1235       if (aFeature) {
1236         SketchPlugin_Sketch* aSketch = aFeature->sketch();
1237         std::shared_ptr<GeomAPI_Edge> anEdge =
1238             std::dynamic_pointer_cast<GeomAPI_Edge>(aFeature->lastResult()->shape());
1239         if (anEdge) {
1240           std::shared_ptr<GeomAPI_Pnt> aPoint3D = aSketch->to3D(aPoint->x(), aPoint->y());
1241           if (anEdge->isLine())
1242             aPoint3D = anEdge->line()->project(aPoint3D);
1243           else if (anEdge->isCircle())
1244             aPoint3D = anEdge->circle()->project(aPoint3D);
1245           if(aPoint3D)
1246             aPoint = aSketch->to2D(aPoint3D);
1247         }
1248       }
1249     } else {
1250       AttributePoint2DPtr anOtherPoint =
1251           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1252       if (anOtherPoint)
1253         aPoint = anOtherPoint->pnt(); // the reference point is much more precise, use it
1254     }
1255   }
1256
1257   return aPoint;
1258 }
1259
1260 static void threePointsOfFeature(const FeaturePtr& theMacroFeature,
1261                                  std::shared_ptr<GeomAPI_Pnt2d> thePoints[3])
1262 {
1263   if (theMacroFeature->getKind() == SketchPlugin_MacroCircle::ID()) {
1264     thePoints[0] = toPoint(theMacroFeature,
1265           SketchPlugin_MacroCircle::FIRST_POINT_ID(),
1266           SketchPlugin_MacroCircle::FIRST_POINT_REF_ID());
1267     thePoints[1] = toPoint(theMacroFeature,
1268           SketchPlugin_MacroCircle::SECOND_POINT_ID(),
1269           SketchPlugin_MacroCircle::SECOND_POINT_REF_ID());
1270     thePoints[2] = toPoint(theMacroFeature,
1271           SketchPlugin_MacroCircle::THIRD_POINT_ID(),
1272           SketchPlugin_MacroCircle::THIRD_POINT_REF_ID());
1273   } else if (theMacroFeature->getKind() == SketchPlugin_MacroArc::ID()) {
1274     thePoints[0] = toPoint(theMacroFeature,
1275           SketchPlugin_MacroArc::START_POINT_2_ID(),
1276           SketchPlugin_MacroArc::START_POINT_REF_ID());
1277     thePoints[1] = toPoint(theMacroFeature,
1278           SketchPlugin_MacroArc::END_POINT_2_ID(),
1279           SketchPlugin_MacroArc::END_POINT_REF_ID());
1280     thePoints[2] = toPoint(theMacroFeature,
1281           SketchPlugin_MacroArc::PASSED_POINT_ID(),
1282           SketchPlugin_MacroArc::PASSED_POINT_REF_ID());
1283   }
1284 }
1285
1286 static bool isPointsOnLine(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint1,
1287                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint2,
1288                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint3)
1289 {
1290   static const double aTolerance = 1.e-7;
1291   if (thePoint1->distance(thePoint2) < aTolerance ||
1292       thePoint1->distance(thePoint3) < aTolerance)
1293     return true;
1294
1295   std::shared_ptr<GeomAPI_Dir2d> aDirP1P2(new GeomAPI_Dir2d(thePoint2->x() - thePoint1->x(),
1296                                                             thePoint2->y() - thePoint1->y()));
1297   std::shared_ptr<GeomAPI_Dir2d> aDirP1P3(new GeomAPI_Dir2d(thePoint3->x() - thePoint1->x(),
1298                                                             thePoint3->y() - thePoint1->y()));
1299   return fabs(aDirP1P2->cross(aDirP1P3)) < aTolerance;
1300 }
1301
1302 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Lin>& theLine,
1303                          const std::shared_ptr<GeomAPI_Pnt>& thePoint1,
1304                          const std::shared_ptr<GeomAPI_Pnt>& thePoint2)
1305 {
1306   static const double aTolerance = 1.e-7;
1307   std::shared_ptr<GeomAPI_Dir> aLineDir = theLine->direction();
1308   std::shared_ptr<GeomAPI_XYZ> aLineLoc = theLine->location()->xyz();
1309
1310   std::shared_ptr<GeomAPI_XYZ> aVec1 = thePoint1->xyz()->decreased(aLineLoc);
1311   // the first point is on the line
1312   if (aVec1->squareModulus() < aTolerance * aTolerance)
1313     return false;
1314   std::shared_ptr<GeomAPI_Dir> aDirP1L(new GeomAPI_Dir(aVec1));
1315   std::shared_ptr<GeomAPI_XYZ> aVec2 = thePoint2->xyz()->decreased(aLineLoc);
1316   // the second point is on the line
1317   if (aVec2->squareModulus() < aTolerance * aTolerance)
1318     return false;
1319   std::shared_ptr<GeomAPI_Dir> aDirP2L(new GeomAPI_Dir(aVec2));
1320
1321   return aLineDir->cross(aDirP1L)->dot(aLineDir->cross(aDirP2L)) > -aTolerance;
1322 }
1323
1324 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Circ>& theCircle,
1325                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint1,
1326                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint2)
1327 {
1328   static const double aTolerance = 1.e-7;
1329   std::shared_ptr<GeomAPI_Pnt> aCenter = theCircle->center();
1330   double aDistP1C = thePoint1->distance(aCenter);
1331   double aDistP2C = thePoint2->distance(aCenter);
1332   return (aDistP1C - theCircle->radius()) * (aDistP2C - theCircle->radius()) > -aTolerance;
1333 }
1334
1335 bool SketchPlugin_ThirdPointValidator::arePointsNotOnLine(
1336     const FeaturePtr& theMacroFeature,
1337     Events_InfoMessage& theError) const
1338 {
1339   static const std::string aErrorPointsOnLine(
1340       "Selected points are on the same line");
1341
1342   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1343   threePointsOfFeature(theMacroFeature, aPoints);
1344
1345   if (isPointsOnLine(aPoints[0], aPoints[1], aPoints[2])) {
1346     theError = aErrorPointsOnLine;
1347     return false;
1348   }
1349   return true;
1350 }
1351
1352 bool SketchPlugin_ThirdPointValidator::arePointsNotSeparated(
1353     const FeaturePtr& theMacroFeature,
1354     const std::list<std::string>& theArguments,
1355     Events_InfoMessage& theError) const
1356 {
1357   static const std::string aErrorPointsApart(
1358       "Selected entity is lying between first two points");
1359
1360   AttributeRefAttrPtr aThirdPointRef = theMacroFeature->refattr(theArguments.front());
1361   FeaturePtr aRefByThird;
1362   if (aThirdPointRef->isObject())
1363     aRefByThird = ModelAPI_Feature::feature(aThirdPointRef->object());
1364   if (!aRefByThird)
1365     return true;
1366
1367   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1368   threePointsOfFeature(theMacroFeature, aPoints);
1369
1370   std::shared_ptr<GeomAPI_Edge> aThirdShape =
1371       std::dynamic_pointer_cast<GeomAPI_Edge>(aRefByThird->lastResult()->shape());
1372   if (!aThirdShape)
1373     return true;
1374
1375   SketchPlugin_Sketch* aSketch =
1376       std::dynamic_pointer_cast<SketchPlugin_Feature>(theMacroFeature)->sketch();
1377   std::shared_ptr<GeomAPI_Pnt> aFirstPnt3D = aSketch->to3D(aPoints[0]->x(), aPoints[0]->y());
1378   std::shared_ptr<GeomAPI_Pnt> aSecondPnt3D = aSketch->to3D(aPoints[1]->x(), aPoints[1]->y());
1379
1380   bool isOk = true;
1381   if (aThirdShape->isLine())
1382     isOk = isOnSameSide(aThirdShape->line(), aFirstPnt3D, aSecondPnt3D);
1383   else if (aThirdShape->isCircle() || aThirdShape->isArc())
1384     isOk = isOnSameSide(aThirdShape->circle(), aFirstPnt3D, aSecondPnt3D);
1385
1386   if (!isOk)
1387     theError = aErrorPointsApart;
1388   return isOk;
1389 }
1390
1391 bool SketchPlugin_ArcEndPointValidator::isValid(
1392     const AttributePtr& theAttribute,
1393     const std::list<std::string>& theArguments,
1394     Events_InfoMessage& theError) const
1395 {
1396   FeaturePtr aFeature = ModelAPI_Feature::feature(theAttribute->owner());
1397   AttributeRefAttrPtr anEndPointRef = aFeature->refattr(theArguments.front());
1398
1399   if(!anEndPointRef.get()) {
1400     return true;
1401   }
1402
1403   ObjectPtr anObject = anEndPointRef->object();
1404   AttributePtr anAttr = anEndPointRef->attr();
1405   if(!anObject.get() && !anAttr.get()) {
1406     return true;
1407   }
1408
1409   if(anEndPointRef->attr().get()) {
1410     return false;
1411   }
1412
1413   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1414   if(aResult.get()) {
1415     GeomShapePtr aShape = aResult->shape();
1416     if(aShape.get() && aShape->isVertex()) {
1417       return false;
1418     }
1419   }
1420
1421   aFeature = ModelAPI_Feature::feature(anObject);
1422   if(aFeature.get()) {
1423     if(aFeature->getKind() == SketchPlugin_Point::ID()) {
1424       return false;
1425     }
1426   }
1427
1428   return true;
1429 }
1430
1431 static GeomShapePtr toInfiniteEdge(const GeomShapePtr theShape)
1432 {
1433   if(!theShape.get()) {
1434     return theShape;
1435   }
1436
1437   if(!theShape->isEdge()) {
1438     return theShape;
1439   }
1440
1441   std::shared_ptr<GeomAPI_Edge> anEdge(new GeomAPI_Edge(theShape));
1442
1443   if(!anEdge.get()) {
1444     return theShape;
1445   }
1446
1447   if(anEdge->isLine()) {
1448     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1449     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::line(aLine);
1450     return aShape;
1451   }
1452
1453   if(anEdge->isCircle() || anEdge->isArc()) {
1454     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1455     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::lineCircle(aCircle);
1456     return aShape;
1457   }
1458
1459   return theShape;
1460 }
1461
1462 bool SketchPlugin_ArcEndPointIntersectionValidator::isValid(
1463     const AttributePtr& theAttribute,
1464     const std::list<std::string>& theArguments,
1465     Events_InfoMessage& theError) const
1466 {
1467   std::shared_ptr<SketchPlugin_MacroArc> anArcFeature =
1468       std::dynamic_pointer_cast<SketchPlugin_MacroArc>(theAttribute->owner());
1469   AttributeRefAttrPtr anEndPointRef = anArcFeature->refattr(theArguments.front());
1470
1471   if(!anEndPointRef.get()) {
1472     return true;
1473   }
1474
1475   GeomShapePtr anArcShape = toInfiniteEdge(anArcFeature->getArcShape(false));
1476
1477   if(!anArcShape.get() || anArcShape->isNull()) {
1478     return true;
1479   }
1480
1481   ObjectPtr anObject = anEndPointRef->object();
1482   AttributePtr anAttr = anEndPointRef->attr();
1483   if(!anObject.get() && !anAttr.get()) {
1484     return true;
1485   }
1486
1487   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1488   if(aResult.get()) {
1489     GeomShapePtr aShape = aResult->shape();
1490     if (!aShape->isEdge())
1491       return true;
1492     aShape = toInfiniteEdge(aShape);
1493     if(aShape.get() && !aShape->isNull()) {
1494       if(anArcShape->isIntersect(aShape)) {
1495         return true;
1496       }
1497     }
1498   }
1499
1500   FeaturePtr aSelectedFeature = ModelAPI_Feature::feature(anObject);
1501   if(aSelectedFeature.get()) {
1502     std::list<ResultPtr> aResults = aSelectedFeature->results();
1503     for(std::list<ResultPtr>::const_iterator anIt = aResults.cbegin();
1504         anIt != aResults.cend();
1505         ++anIt)
1506     {
1507       GeomShapePtr aShape = (*anIt)->shape();
1508       if (!aShape->isEdge())
1509         return true;
1510       aShape = toInfiniteEdge(aShape);
1511       if(aShape.get() && !aShape->isNull()) {
1512         if(anArcShape->isIntersect(aShape)) {
1513           return true;
1514         }
1515       }
1516     }
1517   }
1518
1519   return false;
1520 }
1521
1522 bool SketchPlugin_HasNoConstraint::isValid(const AttributePtr& theAttribute,
1523                                            const std::list<std::string>& theArguments,
1524                                            Events_InfoMessage& theError) const
1525 {
1526   std::set<std::string> aFeatureKinds;
1527   for (std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1528        anArgIt != theArguments.end(); anArgIt++) {
1529     aFeatureKinds.insert(*anArgIt);
1530   }
1531
1532   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1533     theError = "The attribute with the %1 type is not processed";
1534     theError.arg(theAttribute->attributeType());
1535     return false;
1536   }
1537
1538   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
1539                                                                       (theAttribute);
1540   bool isObject = aRefAttr->isObject();
1541   if (!isObject) {
1542     theError = "It uses an empty object";
1543     return false;
1544   }
1545   ObjectPtr anObject = aRefAttr->object();
1546   FeaturePtr aFeature = ModelAPI_Feature::feature(anObject);
1547   if (!aFeature.get()) {
1548     theError = "The feature of the checked attribute is empty";
1549     return false;
1550   }
1551
1552   FeaturePtr aCurrentFeature = ModelAPI_Feature::feature(aRefAttr->owner());
1553
1554   std::set<AttributePtr> aRefsList = anObject->data()->refsToMe();
1555   std::set<AttributePtr>::const_iterator anIt = aRefsList.begin();
1556   for (; anIt != aRefsList.end(); anIt++) {
1557     FeaturePtr aRefFeature = ModelAPI_Feature::feature((*anIt)->owner());
1558     if (aRefFeature.get() && aCurrentFeature != aRefFeature &&
1559         aFeatureKinds.find(aRefFeature->getKind()) != aFeatureKinds.end())
1560       return false; // constraint is found, that means that the check is not valid
1561   }
1562   return true;
1563 }
1564
1565 bool SketchPlugin_ReplicationReferenceValidator::isValid(
1566     const AttributePtr& theAttribute,
1567     const std::list<std::string>& theArguments,
1568     Events_InfoMessage& theError) const
1569 {
1570   AttributeRefAttrPtr aRefAttr =
1571       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1572   if (!aRefAttr)
1573   {
1574     theError = "Incorrect attribute";
1575     return false;
1576   }
1577
1578   ObjectPtr anOwner;
1579   if (aRefAttr->isObject())
1580     anOwner = aRefAttr->object();
1581   else
1582   {
1583     AttributePtr anAttr = aRefAttr->attr();
1584     anOwner = anAttr->owner();
1585   }
1586   FeaturePtr anAttrOwnerFeature = ModelAPI_Feature::feature(anOwner);
1587   if (!anAttrOwnerFeature)
1588     return true;
1589   AttributeBooleanPtr aCopyAttr = anAttrOwnerFeature->boolean(SketchPlugin_SketchEntity::COPY_ID());
1590   if (!aCopyAttr || !aCopyAttr->value())
1591     return true; // feature is not a copy, thus valid
1592
1593   // check the copy feature is already referred by the "Multi" feature
1594   FeaturePtr aMultiFeature = ModelAPI_Feature::feature(theAttribute->owner());
1595   AttributeRefListPtr aRefList = aMultiFeature->reflist(theArguments.front());
1596   for (int i = 0; i < aRefList->size(); ++i)
1597   {
1598     FeaturePtr aRefOwner = ModelAPI_Feature::feature(aRefList->object(i));
1599     if (aRefOwner == anAttrOwnerFeature)
1600     {
1601       theError = "Attribute refers to the object generated by this feature";
1602       return false;
1603     }
1604   }
1605
1606   return true;
1607 }
1608
1609 bool SketchPlugin_SketchFeatureValidator::isValid(const AttributePtr& theAttribute,
1610                                                   const std::list<std::string>& theArguments,
1611                                                   Events_InfoMessage& theError) const
1612 {
1613   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1614     theError = "The attribute with the %1 type is not processed";
1615     theError.arg(theAttribute->attributeType());
1616     return false;
1617   }
1618
1619   // check the attribute refers to a sketch feature
1620   AttributeRefAttrPtr aRefAttr =
1621       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1622   bool isSketchFeature = aRefAttr->isObject();
1623   if (isSketchFeature) {
1624     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1625     isSketchFeature = aFeature.get() != NULL;
1626     if (isSketchFeature) {
1627       std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1628           std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
1629       isSketchFeature = aSketchFeature.get() != NULL;
1630     }
1631   }
1632
1633   if (isSketchFeature)
1634     return true;
1635
1636   theError = "The object selected is not a sketch feature";
1637   return false;
1638 }