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_MultiRotation.h"
  34 #include "SketchPlugin_Point.h"
  35 #include "SketchPlugin_Sketch.h"
  36 #include "SketchPlugin_Trim.h"
  37 #include "SketchPlugin_Tools.h"
  38
  39 #include "SketcherPrs_Tools.h"
  40
  41 #include <Events_InfoMessage.h>
  42
  43 #include <ModelAPI_Data.h>
  44 #include <ModelAPI_Validator.h>
  45 #include <ModelAPI_AttributeDouble.h>
  46 #include <ModelAPI_AttributeInteger.h>
  47 #include <ModelAPI_AttributeRefAttr.h>
  48 #include <ModelAPI_AttributeRefAttrList.h>
  49 #include <ModelAPI_AttributeRefList.h>
  50 #include <ModelAPI_AttributeSelectionList.h>
  51 #include <ModelAPI_AttributeString.h>
  52 #include <ModelAPI_Session.h>
  53 #include <ModelAPI_Tools.h>
  54 #include <ModelAPI_ResultConstruction.h>
  55
  56 #include <ModelGeomAlgo_Point2D.h>
  57 #include <ModelGeomAlgo_Shape.h>
  58
  59 #include <GeomAlgoAPI_EdgeBuilder.h>
  60 #include <GeomAlgoAPI_ShapeTools.h>
  61
  62 #include <GeomAPI_Circ.h>
  63 #include <GeomAPI_Dir2d.h>
  64 #include <GeomAPI_Lin.h>
  65 #include <GeomAPI_Edge.h>
  66 #include <GeomAPI_Vertex.h>
  67 #include <GeomDataAPI_Point2D.h>
  68
  69 #include <algorithm>
  70 #include <cmath>
  71
  72 const double tolerance = 1.e-7;
  73
  74 bool SketchPlugin_DistanceAttrValidator::isValid(const AttributePtr& theAttribute,
  75                                                  const std::list<std::string>& theArguments,
  76                                                  Events_InfoMessage& theError) const
  77 {
  78   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
  79     theError = "The attribute with the %1 type is not processed";
  80     theError.arg(theAttribute->attributeType());
  81     return false;
  82   }
  83
  84   // there is a check whether the feature contains a point and a linear edge or two point values
  85   std::string aParamA = theArguments.front();
  86   SessionPtr aMgr = ModelAPI_Session::get();
  87   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
  88
  89   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
  90                                                                       (theAttribute);
  91   bool isObject = aRefAttr->isObject();
  92   if (!isObject) {
  93     // an attribute is a point. A point value is valid always for the distance
  94     return true;
  95   } else {
  96     // 1. check whether the references object is a linear
  97     ObjectPtr anObject = aRefAttr->object();
  98
  99     const ModelAPI_AttributeValidator* aShapeValidator =
 100       dynamic_cast<const ModelAPI_AttributeValidator*>(
 101       aFactory->validator("GeomValidators_ShapeType"));
 102     std::list<std::string> anArguments;
 103     anArguments.push_back("circle");
 104     Events_InfoMessage aCircleError;
 105     bool aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aCircleError);
 106     // the circle line is not a valid case
 107     if (aShapeValid) {
 108       theError = "Circle can not be used in distance constraint";
 109       return false;
 110     }
 111
 112     anArguments.clear();
 113     anArguments.push_back("line");
 114     Events_InfoMessage aLineError;
 115     aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aLineError);
 116     // if the attribute value is not a line, that means it is a vertex. A vertex is always valid
 117     if (aShapeValid) {
 118       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 119       // If it is a line then we have to check that first attribute id not a line
 120       std::shared_ptr<SketchPlugin_Feature> aSFeature =
 121         std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 122       SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 123       std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(aSketch);
 124       std::shared_ptr<GeomDataAPI_Point2D> aPoint = SketcherPrs_Tools::getFeaturePoint(
 125         aFeature->data(), aParamA, aPlane);
 126       if (!aPoint.get()) {
 127         theError = "One of parameters of distance constraint should be a point";
 128         return false;
 129       }
 130     }
 131   }
 132   return true;
 133 }
 134
 135 bool SketchPlugin_TangentAttrValidator::isValid(const AttributePtr& theAttribute,
 136                                                 const std::list<std::string>& theArguments,
 137                                                 Events_InfoMessage& theError) const
 138 {
 139   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 140     theError = "The attribute with the %1 type is not processed";
 141     theError.arg(theAttribute->attributeType());
 142     return false;
 143   }
 144
 145   // there is a check whether the feature contains a point and a linear edge or two point values
 146   std::string aParamA = theArguments.front();
 147   SessionPtr aMgr = ModelAPI_Session::get();
 148   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 149
 150   FeaturePtr anAttributeFeature =
 151     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 152   AttributeRefAttrPtr aRefAttr =
 153     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 154
 155   bool isObject = aRefAttr->isObject();
 156   ObjectPtr anObject = aRefAttr->object();
 157   if (isObject && anObject.get()) {
 158     FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
 159
 160     AttributeRefAttrPtr aOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 161     ObjectPtr aOtherObject = aOtherAttr->object();
 162     FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
 163     if (!aOtherFea)
 164       return true;
 165
 166     if (aRefFea->getKind() == SketchPlugin_Line::ID()) {
 167       if (aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
 168           aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
 169         theError = "It refers to a %1, but %2 is neither an %3 nor %4";
 170         theError.arg(SketchPlugin_Line::ID()).arg(aParamA)
 171             .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
 172         return false;
 173       }
 174     }
 175     else if (aRefFea->getKind() == SketchPlugin_Arc::ID() ||
 176              aRefFea->getKind() == SketchPlugin_Circle::ID()) {
 177       if (aOtherFea->getKind() != SketchPlugin_Line::ID() &&
 178           aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
 179           aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
 180         theError = "It refers to an %1, but %2 is not a %3 or an %4 or a %5";
 181         theError.arg(SketchPlugin_Arc::ID()).arg(aParamA)
 182             .arg(SketchPlugin_Line::ID()).arg(SketchPlugin_Arc::ID())
 183             .arg(SketchPlugin_Circle::ID());
 184         return false;
 185       }
 186     }
 187     else {
 188       theError = "It refers to %1, but should refer to %2 or %3 or %4";
 189       theError.arg(aRefFea->getKind()).arg(SketchPlugin_Line::ID())
 190           .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
 191       return false;
 192     }
 193     return true;
 194   }
 195   else {
 196     theError = "It uses an empty object";
 197     return false;
 198   }
 199
 200   return true;
 201 }
 202
 203 bool SketchPlugin_NotFixedValidator::isValid(const AttributePtr& theAttribute,
 204                                              const std::list<std::string>& theArguments,
 205                                              Events_InfoMessage& theError) const
 206 {
 207   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 208     theError = "The attribute with the %1 type is not processed";
 209     theError.arg(theAttribute->attributeType());
 210     return false;
 211   }
 212
 213   std::shared_ptr<SketchPlugin_Feature> aFeature =
 214       std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 215   if (!aFeature)
 216     return true;
 217
 218   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 219
 220   SketchPlugin_Sketch* aSketch = aFeature->sketch();
 221   int aNbFeatures = aSketch->numberOfSubs();
 222   for (int anInd = 0; anInd < aNbFeatures; anInd++) {
 223     FeaturePtr aSubFeature = aSketch->subFeature(anInd);
 224     if (aSubFeature->getKind() != SketchPlugin_ConstraintRigid::ID() || aSubFeature == aFeature)
 225       continue;
 226     AttributeRefAttrPtr aRAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 227         aSubFeature->attribute(SketchPlugin_ConstraintRigid::ENTITY_A()));
 228     if (aRefAttr->isObject()) {
 229       if (aRefAttr->object() == aRAttr->object()) {
 230         ObjectPtr anObject = aRefAttr->object();
 231         std::string aName = anObject.get() ? anObject->data()->name() : "";
 232         theError = "The object %1 has been already fixed.";
 233         theError.arg(aName);
 234         return false;
 235       }
 236     }
 237     else if (aRefAttr->attr() == aRAttr->attr()) {
 238       AttributePtr anAttribute = aRefAttr->attr();
 239       std::string aName = anAttribute.get() ? anAttribute->id() : "";
 240       theError = "The attribute %1 has been already fixed.";
 241       theError.arg(aName);
 242       return false;
 243     }
 244   }
 245   return true;
 246 }
 247
 248 bool SketchPlugin_EqualAttrValidator::isValid(const AttributePtr& theAttribute,
 249                                               const std::list<std::string>& theArguments,
 250                                               Events_InfoMessage& theError) const
 251 {
 252   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 253     theError = "The attribute with the %1 type is not processed";
 254     theError.arg(theAttribute->attributeType());
 255     return false;
 256   }
 257
 258   std::string aParamA = theArguments.front();
 259   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 260   AttributeRefAttrPtr aRefAttr[2];
 261   aRefAttr[0] = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 262   aRefAttr[1] = aFeature->data()->refattr(aParamA);
 263
 264   if (!aRefAttr[0]->isObject() || !aRefAttr[1]->isObject()) {
 265     theError = "Attributes can not be used in equal constraint";
 266     return false;
 267   }
 268
 269   std::string aType[2];
 270   std::list<std::string> anArguments;
 271   for (int i = 0; i < 2; i++) {
 272     ObjectPtr anObject = aRefAttr[i]->object();
 273     if (!anObject.get()) {
 274       theError = "An empty object is used.";
 275       return false;
 276     }
 277
 278     aFeature = ModelAPI_Feature::feature(anObject);
 279     if (!aFeature.get()) {
 280       theError = "An empty feature is used.";
 281       return false;
 282     }
 283
 284     aType[i] = aFeature->getKind();
 285     if (aFeature->getKind() != SketchPlugin_Line::ID() &&
 286         aFeature->getKind() != SketchPlugin_Circle::ID() &&
 287         aFeature->getKind() != SketchPlugin_Arc::ID()) {
 288       theError = "The %1 feature kind of attribute is wrong. It should be %2 or %3 or %4";
 289       theError.arg(aFeature->getKind()).arg(SketchPlugin_Line::ID())
 290           .arg(SketchPlugin_Circle::ID()).arg(SketchPlugin_Arc::ID());
 291       // wrong type of attribute
 292       return false;
 293     }
 294   }
 295
 296   if ((aType[0] == SketchPlugin_Line::ID() || aType[1] == SketchPlugin_Line::ID()) &&
 297       aType[0] != aType[1]) {
 298     theError = "Feature with kinds %1 and %2 can not be equal.";
 299     theError.arg(aType[0]).arg(aType[1]);
 300     return false;
 301   }
 302   return true;
 303 }
 304
 305 bool SketchPlugin_MirrorAttrValidator::isValid(const AttributePtr& theAttribute,
 306                                                const std::list<std::string>& theArguments,
 307                                                Events_InfoMessage& theError) const
 308 {
 309   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 310     theError = "The attribute with the %1 type is not processed";
 311     theError.arg(theAttribute->attributeType());
 312     return false;
 313   }
 314
 315   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 316   AttributeRefListPtr aSelAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 317
 318   AttributeRefListPtr aRefListOfMirrored = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 319       aFeature->attribute(SketchPlugin_Constraint::ENTITY_C()));
 320   std::list<ObjectPtr> aMirroredObjects = aRefListOfMirrored->list();
 321
 322   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 323     ObjectPtr aSelObject = aSelAttr->object(anInd);
 324     std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 325     std::list<ObjectPtr>::iterator aMirIter = aMirroredObjects.begin();
 326     for (; aMirIter != aMirroredObjects.end(); aMirIter++)
 327       if (aSelObject == *aMirIter) {
 328         theError = "The object %1 is a result of mirror";
 329         theError.arg(aName);
 330         return false;
 331       }
 332   }
 333   return true;
 334 }
 335
 336 bool SketchPlugin_CoincidenceAttrValidator::isValid(const AttributePtr& theAttribute,
 337                                                     const std::list<std::string>& theArguments,
 338                                                     Events_InfoMessage& theError) const
 339 {
 340   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 341     theError = "The attribute with the %1 type is not processed";
 342     theError.arg(theAttribute->attributeType());
 343     return false;
 344   }
 345
 346   // there is a check whether the feature contains a point and a linear edge or two point values
 347   std::string aParamA = theArguments.front();
 348   SessionPtr aMgr = ModelAPI_Session::get();
 349   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 350
 351   FeaturePtr aConstraint = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 352   AttributeRefAttrPtr aRefAttrA = aConstraint->data()->refattr(aParamA);
 353   if (!aRefAttrA) {
 354     theError = "The %1 attribute should be %2";
 355     theError.arg(aParamA).arg(ModelAPI_AttributeRefAttr::typeId());
 356     return false;
 357   }
 358
 359   AttributeRefAttrPtr aRefAttrB =
 360     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 361
 362   // first attribute is a point, it may coincide with any object
 363   if (!aRefAttrA->isObject())
 364     return true;
 365   else {
 366     ObjectPtr anObject = aRefAttrA->object();
 367     if (!anObject.get()) {
 368       theError = "%1 attribute has an empty object";
 369       theError.arg(aParamA);
 370       return false;
 371     }
 372     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrA->object());
 373     if (!aFeature.get()) {
 374       theError = "%1 attribute has an empty feature";
 375       theError.arg(aParamA);
 376       return false;
 377     }
 378
 379     if (aFeature->getKind() == SketchPlugin_Point::ID())
 380       return true;
 381   }
 382
 383   // second attribute is a point, it may coincide with any object
 384   if (!aRefAttrB->isObject())
 385     return true;
 386   else {
 387     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrB->object());
 388     if (!aFeature) {
 389       theError = "%1 attribute has an empty object";
 390       theError.arg(theAttribute->id());
 391       return false;
 392     }
 393     if (aFeature->getKind() == SketchPlugin_Point::ID())
 394       return true;
 395   }
 396   theError = "There is no an attribute filled by a point";
 397   return false;
 398 }
 399
 400
 401 bool SketchPlugin_CopyValidator::isValid(const AttributePtr& theAttribute,
 402                                          const std::list<std::string>& theArguments,
 403                                          Events_InfoMessage& theError) const
 404 {
 405   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 406     theError = "The attribute with the %1 type is not processed";
 407     theError.arg(theAttribute->attributeType());
 408     return false;
 409   }
 410
 411   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 412   AttributeRefListPtr aSelAttr =
 413     std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 414
 415   AttributeRefListPtr aRefListOfInitial = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 416       aFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
 417   AttributeRefListPtr aRefListOfCopied = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 418       aFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
 419   std::list<ObjectPtr> anInitialObjects = aRefListOfInitial->list();
 420   std::list<ObjectPtr> aCopiedObjects = aRefListOfCopied->list();
 421
 422   std::list<ObjectPtr>::iterator anObjIter;
 423   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 424     ObjectPtr aSelObject = aSelAttr->object(anInd);
 425     anObjIter = anInitialObjects.begin();
 426     for (; anObjIter != anInitialObjects.end(); anObjIter++)
 427       if (aSelObject == *anObjIter)
 428         break;
 429     if (anObjIter != anInitialObjects.end())
 430       continue;
 431     anObjIter = aCopiedObjects.begin();
 432     for (; anObjIter != aCopiedObjects.end(); anObjIter++)
 433       if (aSelObject == *anObjIter) {
 434         std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 435         theError = "The object %1 is a result of copy";
 436         theError.arg(aName);
 437         return false;
 438       }
 439   }
 440   return true;
 441 }
 442
 443 bool SketchPlugin_SolverErrorValidator::isValid(
 444   const std::shared_ptr<ModelAPI_Feature>& theFeature,
 445   const std::list<std::string>& theArguments,
 446   Events_InfoMessage& theError) const
 447 {
 448   AttributeStringPtr aAttributeString = theFeature->string(SketchPlugin_Sketch::SOLVER_ERROR());
 449
 450   if (!aAttributeString->value().empty()) {
 451     theError = aAttributeString->value();
 452     return false;
 453   }
 454
 455   return true;
 456 }
 457
 458 bool SketchPlugin_SolverErrorValidator::isNotObligatory(std::string theFeature,
 459                                                         std::string theAttribute)
 460 {
 461   return true;
 462 }
 463
 464 static bool hasSameTangentFeature(const std::set<AttributePtr>& theRefsList,
 465                                   const FeaturePtr theFeature)
 466 {
 467   for(std::set<AttributePtr>::const_iterator
 468       anIt = theRefsList.cbegin(); anIt != theRefsList.cend(); ++anIt) {
 469     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 470     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 471     if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 472       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 473         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
 474       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 475         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
 476       if(anAttrRefA.get()) {
 477         ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
 478         if(aResA.get()) {
 479           DocumentPtr aDoc = aResA->document();
 480           if(aDoc.get()) {
 481             FeaturePtr aFeatureA = aDoc->feature(aResA);
 482             if(aFeatureA.get() && aFeatureA == theFeature) {
 483               return true;
 484             }
 485           }
 486         }
 487       }
 488       if(anAttrRefB.get()) {
 489         ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
 490         if(aResB.get()) {
 491           DocumentPtr aDoc = aResB->document();
 492           if(aDoc.get()) {
 493             FeaturePtr aFeatureB = aDoc->feature(aResB);
 494             if(aFeatureB.get() && aFeatureB == theFeature) {
 495               return true;
 496             }
 497           }
 498         }
 499       }
 500     }
 501   }
 502   return false;
 503 }
 504
 505 static bool isPointPointCoincidence(const FeaturePtr& theCoincidence)
 506 {
 507   AttributeRefAttrPtr aRefAttr[2] = {
 508       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_A()),
 509       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_B())
 510   };
 511
 512   bool arePoints = true;
 513   for (int i = 0; i < 2 && arePoints; ++i) {
 514     if (aRefAttr[i]->isObject()) {
 515       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 516       arePoints = aFeature.get() && aFeature->getKind() == SketchPlugin_Point::ID();
 517     } else
 518       arePoints = aRefAttr[i]->attr().get() != NULL;
 519   }
 520   return arePoints;
 521 }
 522
 523 bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
 524                                                  const std::list<std::string>& theArguments,
 525                                                  Events_InfoMessage& theError) const
 526 {
 527   AttributeRefAttrPtr aPointRefAttr =
 528     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 529   if(!aPointRefAttr.get()) {
 530     theError = "Error: Point not selected.";
 531     return false;
 532   }
 533
 534   AttributePtr aPointAttribute = aPointRefAttr->attr();
 535   if (!aPointAttribute.get()) {
 536     theError = "Error: Bad point selected.";
 537     return false;
 538   }
 539   std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt =
 540     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
 541
 542   // Obtain constraint coincidence for the fillet point.
 543   const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
 544   FeaturePtr aConstraintCoincidence;
 545   for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin();
 546       anIt != aRefsList.cend(); ++anIt) {
 547     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 548     FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 549     if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 550       if (!isPointPointCoincidence(aConstrFeature))
 551         continue;
 552
 553       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 554         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 555       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 556         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 557
 558       AttributePtr anAttrA = anAttrRefA->attr();
 559       if(aPointAttribute == anAttrA) {
 560         aConstraintCoincidence = aConstrFeature;
 561         break;
 562       }
 563
 564       AttributePtr anAttrB = anAttrRefB->attr();
 565       if(aPointAttribute == anAttrB) {
 566         aConstraintCoincidence = aConstrFeature;
 567         break;
 568       }
 569     }
 570   }
 571
 572   if(!aConstraintCoincidence.get()) {
 573     theError = "Error: one of the selected point does not have coicidence.";
 574     return false;
 575   }
 576
 577   // Get coincides from constraint.
 578   std::set<FeaturePtr> aCoinsides;
 579   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 580                                         SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 581                                         aCoinsides,
 582                                         true);
 583   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 584                                         SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 585                                         aCoinsides,
 586                                         true);
 587
 588   // Remove points and external lines from set of coincides.
 589   std::set<FeaturePtr> aNewSetOfCoincides;
 590   for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 591       anIt != aCoinsides.end(); ++anIt) {
 592     std::shared_ptr<SketchPlugin_SketchEntity> aSketchEntity =
 593       std::dynamic_pointer_cast<SketchPlugin_SketchEntity>(*anIt);
 594     if(aSketchEntity.get() && (aSketchEntity->isCopy() || aSketchEntity->isExternal())) {
 595       continue;
 596     }
 597     if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
 598         (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
 599           continue;
 600     }
 601     if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
 602       AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 603       std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt =
 604         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
 605       double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
 606       if(aDistSelectedArcCenter < tolerance) {
 607         continue;
 608       }
 609     }
 610     aNewSetOfCoincides.insert(*anIt);
 611   }
 612   aCoinsides = aNewSetOfCoincides;
 613
 614   // If we still have more than two coincides remove auxilary entities from set of coincides.
 615   if(aCoinsides.size() > 2) {
 616     aNewSetOfCoincides.clear();
 617     for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 618         anIt != aCoinsides.end(); ++anIt) {
 619       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 620         aNewSetOfCoincides.insert(*anIt);
 621       }
 622     }
 623     aCoinsides = aNewSetOfCoincides;
 624   }
 625
 626   if(aCoinsides.size() != 2) {
 627     theError = "Error: One of the selected points does not have two suitable edges for fillet.";
 628     return false;
 629   }
 630
 631   // Check that selected edges don't have tangent constraint.
 632   std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 633   FeaturePtr aFirstFeature = *anIt++;
 634   FeaturePtr aSecondFeature = *anIt;
 635   const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
 636   if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
 637     theError = "Error: Edges in selected point has tangent constraint.";
 638     return false;
 639   }
 640
 641   std::list<ResultPtr> aFirstResults = aFirstFeature->results();
 642   for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin();
 643       aResIt != aFirstResults.end(); ++aResIt) {
 644     ResultPtr aRes = *aResIt;
 645     const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
 646     if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
 647       theError = "Error: Edges in selected point has tangent constraint.";
 648       return false;
 649     }
 650   }
 651
 652   // Check the features are not tangent
 653   std::shared_ptr<GeomAPI_Shape> aFirstShape = aFirstFeature->lastResult()->shape();
 654   std::shared_ptr<GeomAPI_Shape> aSecondShape = aSecondFeature->lastResult()->shape();
 655   if (!aFirstShape || !aFirstShape->isEdge() ||
 656       !aSecondShape || !aSecondShape->isEdge()) {
 657     theError = "Error: At least on of the features is not an edge";
 658     return false;
 659   }
 660
 661   std::shared_ptr<GeomAPI_Edge> anEdge1 = std::dynamic_pointer_cast<GeomAPI_Edge>(aFirstShape);
 662   std::shared_ptr<GeomAPI_Edge> anEdge2 = std::dynamic_pointer_cast<GeomAPI_Edge>(aSecondShape);
 663
 664   static const double TOL = 1.e-7;
 665   if (anEdge1->isLine() && anEdge2->isLine()) {
 666     // Check that lines not collinear
 667     std::shared_ptr<GeomAPI_Dir> aDir1 = anEdge1->line()->direction();
 668     std::shared_ptr<GeomAPI_Dir> aDir2 = anEdge2->line()->direction();
 669     double aCross = aDir1->cross(aDir2)->squareModulus();
 670     if (aCross < TOL * TOL)
 671       return false;
 672   } else if (anEdge1->isArc() && anEdge2->isArc()) {
 673     // check the circles are not tangent
 674     std::shared_ptr<GeomAPI_Circ> aCirc1 = anEdge1->circle();
 675     std::shared_ptr<GeomAPI_Circ> aCirc2 = anEdge2->circle();
 676     double aDistCC = aCirc1->center()->distance(aCirc2->center());
 677     double aRadSum = aCirc1->radius() + aCirc2->radius();
 678     double aRadDiff = fabs(aCirc1->radius() - aCirc2->radius());
 679     if (fabs(aDistCC - aRadSum) < TOL || fabs(aDistCC - aRadDiff) < TOL)
 680       return false;
 681   } else {
 682     // check whether line and arc are tangent
 683     std::shared_ptr<GeomAPI_Circ> aCirc;
 684     std::shared_ptr<GeomAPI_Lin> aLine;
 685     if (anEdge1->isLine()) {
 686       aLine = anEdge1->line();
 687       aCirc = anEdge2->circle();
 688     } else {
 689       aCirc = anEdge1->circle();
 690       aLine = anEdge2->line();
 691     }
 692
 693     double aDistCL = aLine->distance(aCirc->center());
 694     if (fabs(aDistCL - aCirc->radius()) < TOL)
 695       return false;
 696   }
 697
 698   return true;
 699 }
 700
 701 bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
 702                                                     const std::list<std::string>& theArguments,
 703                                                     Events_InfoMessage& theError) const
 704 {
 705   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 706     theError = "The attribute with the %1 type is not processed";
 707     theError.arg(theAttribute->attributeType());
 708     return false;
 709   }
 710
 711   // there is a check whether the feature contains a point and a linear edge or two point values
 712   std::string aParamA = theArguments.front();
 713   SessionPtr aMgr = ModelAPI_Session::get();
 714   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 715
 716   FeaturePtr anAttributeFeature =
 717     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 718   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 719   AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 720
 721   AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
 722   int aNbPoints = 0;
 723   int aNbLines = 0;
 724   for (int i = 0; i < 2; ++i) {
 725     if (!aRefAttrs[i]->isObject())
 726       ++aNbPoints;
 727     else {
 728       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
 729       if (!aFeature) {
 730         if (aNbPoints + aNbLines != 0)
 731           return true;
 732         else continue;
 733       }
 734
 735       if (aFeature->getKind() == SketchPlugin_Point::ID())
 736         ++aNbPoints;
 737       else if (aFeature->getKind() == SketchPlugin_Line::ID())
 738         ++aNbLines;
 739     }
 740   }
 741
 742   if (aNbPoints != 1 || aNbLines != 1) {
 743     theError = "Middle point constraint allows points and lines only";
 744     return false;
 745   }
 746   return true;
 747 }
 748
 749 bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
 750                                                     const std::list<std::string>& /*theArguments*/,
 751                                                     Events_InfoMessage& theError) const
 752 {
 753   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 754     theError = "The attribute with the %1 type is not processed";
 755     theError.arg(theAttribute->attributeType());
 756     return false;
 757   }
 758   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 759   AttributePtr anAttr = aRefAttr->attr();
 760   if (!anAttr) {
 761     theError = "The attribute %1 should be a point";
 762     theError.arg(theAttribute->id());
 763     return false;
 764   }
 765
 766   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 767   const std::string& aFeatureType = anAttrFeature->getKind();
 768   if (aFeatureType == SketchPlugin_Arc::ID()) {
 769     // selected point should not be a center of arc
 770     const std::string& aPntId = anAttr->id();
 771     if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
 772       theError = "The attribute %1 is not supported";
 773       theError.arg(aPntId);
 774       return false;
 775     }
 776   }
 777   else if (aFeatureType == SketchPlugin_Line::ID()) {
 778     // selected point should be bound point of line
 779     const std::string& aPntId = anAttr->id();
 780     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 781       theError = "The attribute %1 is not supported";
 782       theError.arg(aPntId);
 783       return false;
 784     }
 785   }
 786   else {
 787     theError = "Unable to build tangent arc on %1";
 788     theError.arg(anAttrFeature->getKind());
 789     return false;
 790   }
 791
 792   return true;
 793 }
 794
 795 bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
 796                                                  const std::list<std::string>& theArguments,
 797                                                  Events_InfoMessage& theError) const
 798 {
 799   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 800     theError = "The attribute with the %1 type is not processed";
 801     theError.arg(theAttribute->attributeType());
 802     return false;
 803   }
 804   AttributeSelectionPtr aLineAttr =
 805                        std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 806   std::shared_ptr<GeomAPI_Edge> anEdge;
 807   if(aLineAttr && aLineAttr->value() && aLineAttr->value()->isEdge()) {
 808     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->value()));
 809   } else if(aLineAttr->context() &&
 810             aLineAttr->context()->shape() && aLineAttr->context()->shape()->isEdge()) {
 811     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->context()->shape()));
 812   }
 813
 814   if (!anEdge || !anEdge->isLine()) {
 815     theError = "The attribute %1 should be a line";
 816     theError.arg(theAttribute->id());
 817     return false;
 818   }
 819
 820   std::shared_ptr<GeomAPI_Dir> aLineDir = anEdge->line()->direction();
 821
 822   // find a sketch
 823   std::shared_ptr<SketchPlugin_Sketch> aSketch;
 824   std::set<AttributePtr> aRefs = aLineAttr->owner()->data()->refsToMe();
 825   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
 826   for (; anIt != aRefs.end(); ++anIt) {
 827     CompositeFeaturePtr aComp =
 828         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
 829     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
 830       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
 831       break;
 832     }
 833   }
 834   if (!aSketch) {
 835     theError = "There is no sketch referring to the current feature";
 836     return false;
 837   }
 838
 839   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
 840   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
 841   return fabs(aNormal->dot(aLineDir)) > tolerance * tolerance;
 842 }
 843
 844 bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
 845                                           const std::list<std::string>& theArguments,
 846                                           Events_InfoMessage& theError) const
 847 {
 848   bool aValid = false;
 849
 850   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 851     theError = "The attribute with the %1 type is not processed";
 852     theError.arg(theAttribute->attributeType());
 853     return aValid;
 854   }
 855   AttributeReferencePtr aFeatureAttr =
 856             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 857
 858   ObjectPtr anAttrObject = aFeatureAttr->value();
 859   FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
 860   if (!anAttrFeature)
 861     return aValid;
 862
 863   std::string aKind = anAttrFeature->getKind();
 864   if (aKind == SketchPlugin_Line::ID() ||
 865       aKind == SketchPlugin_Arc::ID() ||
 866       aKind == SketchPlugin_Circle::ID()) {
 867
 868     std::set<ResultPtr> anEdgeShapes;
 869     ModelGeomAlgo_Shape::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
 870     if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
 871       return aValid;
 872
 873     // coincidences to the feature
 874     std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
 875     ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature,
 876                         SketchPlugin_ConstraintCoincidence::ID(),
 877                         aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
 878
 879     GeomShapePtr anAttrShape = (*anEdgeShapes.begin())->shape();
 880     std::shared_ptr<SketchPlugin_Feature> aSFeature =
 881                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
 882     SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 883
 884     std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
 885     std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
 886         aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
 887     std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 888         aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
 889     std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 890         aData->attribute(SketchPlugin_Sketch::NORM_ID()));
 891     std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
 892
 893     typedef std::map<std::shared_ptr<GeomAPI_Pnt>,
 894                      std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
 895                                std::list<std::shared_ptr<ModelAPI_Object> > > > PointToRefsMap;
 896     PointToRefsMap aPointsInfo;
 897
 898     ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
 899                                                 aX->dir(), aDirY, aPointsInfo);
 900     int aCoincidentToFeature = (int)aPointsInfo.size();
 901     if (aKind == SketchPlugin_Circle::ID())
 902       aValid = aCoincidentToFeature >= 2;
 903     else
 904       aValid = aCoincidentToFeature >= 1;
 905   }
 906
 907   return aValid;
 908 }
 909
 910 bool SketchPlugin_TrimValidator::isValid(const AttributePtr& theAttribute,
 911                                          const std::list<std::string>& theArguments,
 912                                          Events_InfoMessage& theError) const
 913 {
 914   bool aValid = false;
 915
 916   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 917     theError = "The attribute with the %1 type is not processed";
 918     theError.arg(theAttribute->attributeType());
 919     return aValid;
 920   }
 921   AttributeReferencePtr aBaseObjectAttr =
 922             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 923
 924   std::shared_ptr<SketchPlugin_Feature> aTrimFeature =
 925                  std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 926
 927   ObjectPtr aBaseObject = aBaseObjectAttr->value();
 928   if (!aBaseObject) {
 929     AttributePtr aPreviewAttr = aTrimFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
 930     aBaseObjectAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
 931     aBaseObject = aBaseObjectAttr->value();
 932   }
 933
 934   FeaturePtr aBaseFeature = ModelAPI_Feature::feature(aBaseObject);
 935   if (!aBaseFeature)
 936     return aValid;
 937
 938   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 939                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(aBaseFeature);
 940   if (!aSketchFeature.get() || aSketchFeature->isCopy())
 941     return aValid;
 942
 943   std::string aKind = aBaseFeature->getKind();
 944   if (aKind != SketchPlugin_Line::ID() &&
 945       aKind != SketchPlugin_Arc::ID() &&
 946       aKind != SketchPlugin_Circle::ID())
 947     return aValid;
 948
 949   // point on feature
 950   AttributePoint2DPtr aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 951                        aTrimFeature->data()->attribute(SketchPlugin_Trim::PREVIEW_POINT()));
 952
 953   SketchPlugin_Sketch* aSketch = aTrimFeature->sketch();
 954
 955   std::shared_ptr<GeomAPI_Pnt2d> anAttributePnt2d = aPoint->pnt();
 956   std::shared_ptr<GeomAPI_Pnt> anAttributePnt = aSketch->to3D(anAttributePnt2d->x(),
 957                                                               anAttributePnt2d->y());
 958
 959   std::map<ObjectPtr, std::set<GeomShapePtr> > aCashedShapes;
 960   std::map<ObjectPtr, std::map<std::shared_ptr<GeomAPI_Pnt>,
 961            std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
 962                      std::list<std::shared_ptr<ModelAPI_Object> > > > > anObjectToPoints;
 963   SketchPlugin_Trim::fillObjectShapes(aBaseObject, aSketch->data()->owner(),
 964                                       aCashedShapes, anObjectToPoints);
 965   const std::set<GeomShapePtr>& aShapes = aCashedShapes[aBaseObject];
 966
 967   return aShapes.size() > 1;
 968 }
 969
 970 bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
 971                                                const std::list<std::string>& theArguments,
 972                                                Events_InfoMessage& theError) const
 973 {
 974   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 975     theError = "The attribute with the %1 type is not processed";
 976     theError.arg(theAttribute->attributeType());
 977     return false;
 978   }
 979
 980   AttributeSelectionPtr aFeatureAttr =
 981       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 982   std::shared_ptr<GeomAPI_Edge> anEdge;
 983   std::shared_ptr<SketchPlugin_Feature> aSketchFeature;
 984   if (aFeatureAttr.get()) {
 985     GeomShapePtr aVal = aFeatureAttr->value();
 986     ResultPtr aRes = aFeatureAttr->context();
 987     if (aVal && aVal->isVertex())
 988       return true; // vertex is always could be projected
 989     if (aVal && aVal->isEdge()) {
 990       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->value()));
 991     } else if(aRes && aRes->shape()) {
 992       if (aRes->shape()->isVertex())
 993         return true; // vertex is always could be projected
 994       else if (aRes->shape()->isEdge())
 995         anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->context()->shape()));
 996     }
 997
 998     // try to convert result to sketch feature
 999     if (aRes) {
1000       aSketchFeature =
1001         std::dynamic_pointer_cast<SketchPlugin_Feature>(ModelAPI_Feature::feature(aRes));
1002     }
1003   }
1004   if (!anEdge) {
1005     theError = "The attribute %1 should be an edge or vertex";
1006     theError.arg(theAttribute->id());
1007     return false;
1008   }
1009
1010   // find a sketch
1011   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1012   std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
1013   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1014   for (; anIt != aRefs.end(); ++anIt) {
1015     CompositeFeaturePtr aComp =
1016         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1017     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1018       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1019       break;
1020     }
1021   }
1022   if (!aSketch) {
1023     theError = "There is no sketch referring to the current feature";
1024     return false;
1025   }
1026   if (aSketchFeature && aSketch.get() == aSketchFeature->sketch()) {
1027     theError = "Unable to project feature from the same sketch";
1028     return false;
1029   }
1030
1031   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1032   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
1033   std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
1034
1035   if (anEdge->isLine()) {
1036     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1037     std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
1038     double aDot = fabs(aNormal->dot(aLineDir));
1039     bool aValid = fabs(aDot - 1.0) >= tolerance * tolerance;
1040     if (!aValid)
1041       theError = "Error: Edge is already in the sketch plane.";
1042     return aValid;
1043   }
1044   else if (anEdge->isCircle() || anEdge->isArc()) {
1045     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1046     std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
1047     double aDot = fabs(aNormal->dot(aCircNormal));
1048     bool aValid = fabs(aDot - 1.0) < tolerance * tolerance;
1049     if (!aValid)
1050       theError.arg(anEdge->isCircle() ? "Error: Cirlce is already in the sketch plane."
1051                                       : "Error: Arc is already in the sketch plane.");
1052     return aValid;
1053   }
1054
1055   theError = "Error: Selected object is not line, circle or arc.";
1056   return false;
1057 }
1058
1059
1060 static std::set<FeaturePtr> common(const std::set<FeaturePtr>& theSet1,
1061                                    const std::set<FeaturePtr>& theSet2)
1062 {
1063   std::set<FeaturePtr> aCommon;
1064   if (theSet1.empty() || theSet2.empty())
1065     return aCommon;
1066
1067   std::set<FeaturePtr>::const_iterator anIt2 = theSet2.begin();
1068   for (; anIt2 != theSet2.end(); ++anIt2)
1069     if (theSet1.find(*anIt2) != theSet1.end())
1070       aCommon.insert(*anIt2);
1071   return aCommon;
1072 }
1073
1074 bool SketchPlugin_DifferentReferenceValidator::isValid(
1075     const AttributePtr& theAttribute,
1076     const std::list<std::string>& theArguments,
1077     Events_InfoMessage& theError) const
1078 {
1079   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1080
1081   int aNbFeaturesReferred = 0;
1082   int aNbAttributesReferred = 0;
1083   std::set<FeaturePtr> aCommonReferredFeatures;
1084
1085   // find all features referred by attributes listed in theArguments
1086   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1087   for (; anArgIt != theArguments.end(); ++anArgIt) {
1088     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1089     if (!aRefAttr)
1090       continue;
1091
1092     std::set<FeaturePtr> aCoincidentFeatures;
1093     if (aRefAttr->isObject()) {
1094       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1095       if (aFeature) {
1096         aCoincidentFeatures.insert(aFeature);
1097         aNbFeaturesReferred += 1;
1098       }
1099     } else {
1100       AttributePoint2DPtr aPoint =
1101           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1102       if (aPoint) {
1103         aCoincidentFeatures = SketchPlugin_Tools::findFeaturesCoincidentToPoint(aPoint);
1104         aNbAttributesReferred += 1;
1105       }
1106     }
1107
1108     if (aCommonReferredFeatures.empty())
1109       aCommonReferredFeatures = aCoincidentFeatures;
1110     else
1111       aCommonReferredFeatures = common(aCommonReferredFeatures, aCoincidentFeatures);
1112
1113     if (aCommonReferredFeatures.empty())
1114       return true;
1115   }
1116
1117   bool isOk = aNbFeaturesReferred < 1;
1118   if (aNbFeaturesReferred == 1) {
1119     if (aCommonReferredFeatures.size() == 1) {
1120       FeaturePtr aFeature = *aCommonReferredFeatures.begin();
1121       isOk = aNbAttributesReferred <= 1 ||
1122              aFeature->getKind() == SketchPlugin_Circle::ID() ||
1123              aFeature->getKind() == SketchPlugin_Arc::ID();
1124     } else
1125       isOk = false;
1126   }
1127
1128   if (!isOk)
1129     theError = "Attributes are referred to the same feature";
1130   return isOk;
1131 }
1132
1133 bool SketchPlugin_DifferentPointReferenceValidator::isValid(
1134     const AttributePtr& theAttribute,
1135     const std::list<std::string>& theArguments,
1136     Events_InfoMessage& theError) const
1137 {
1138   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1139   std::set<AttributePoint2DPtr> aReferredCoincidentPoints;
1140
1141   // find all points referred by attributes listed in theArguments
1142   bool hasRefsToPoints = false;
1143   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1144   for (; anArgIt != theArguments.end(); ++anArgIt) {
1145     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1146     if (!aRefAttr)
1147       continue;
1148
1149     if (!aRefAttr->isObject()) {
1150       AttributePoint2DPtr aPoint =
1151           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1152       if (aReferredCoincidentPoints.empty())
1153         aReferredCoincidentPoints = SketchPlugin_Tools::findPointsCoincidentToPoint(aPoint);
1154       else if (aReferredCoincidentPoints.find(aPoint) == aReferredCoincidentPoints.end())
1155         return true; // non-coincident point has been found
1156       else
1157         hasRefsToPoints = true;
1158     }
1159   }
1160
1161   if (hasRefsToPoints)
1162     theError = "Attributes are referred to the same point";
1163   return !hasRefsToPoints;
1164 }
1165
1166 bool SketchPlugin_CirclePassedPointValidator::isValid(
1167     const AttributePtr& theAttribute,
1168     const std::list<std::string>&,
1169     Events_InfoMessage& theError) const
1170 {
1171   static const std::string aErrorMessage(
1172       "Passed point refers to the same feature as a center point");
1173
1174   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1175
1176   AttributeRefAttrPtr aCenterRef =
1177       anOwner->refattr(SketchPlugin_MacroCircle::CENTER_POINT_REF_ID());
1178   AttributeRefAttrPtr aPassedRef =
1179       anOwner->refattr(SketchPlugin_MacroCircle::PASSED_POINT_REF_ID());
1180
1181   if (!aPassedRef->isObject())
1182     return true;
1183
1184   FeaturePtr aPassedFeature = ModelAPI_Feature::feature(aPassedRef->object());
1185   if (!aPassedFeature)
1186     return true;
1187
1188   if (aCenterRef->isObject()) {
1189     if (aCenterRef->object() == aPassedRef->object()) {
1190       theError = aErrorMessage;
1191       return false;
1192     }
1193   } else {
1194     AttributePoint2DPtr aCenterPoint =
1195         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aCenterRef->attr());
1196     if (aCenterPoint) {
1197       std::set<FeaturePtr> aCoincidentFeatures =
1198           SketchPlugin_Tools::findFeaturesCoincidentToPoint(aCenterPoint);
1199       // check one of coincident features is a feature referred by passed point
1200       std::set<FeaturePtr>::const_iterator anIt = aCoincidentFeatures.begin();
1201       for(; anIt != aCoincidentFeatures.end(); ++anIt)
1202         if (*anIt == aPassedFeature) {
1203           theError = aErrorMessage;
1204           return false;
1205         }
1206     }
1207   }
1208   return true;
1209 }
1210
1211 bool SketchPlugin_ThirdPointValidator::isValid(
1212     const AttributePtr& theAttribute,
1213     const std::list<std::string>& theArguments,
1214     Events_InfoMessage& theError) const
1215 {
1216   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1217   return arePointsNotOnLine(anOwner, theError) &&
1218          arePointsNotSeparated(anOwner, theArguments, theError);
1219 }
1220
1221 static std::shared_ptr<GeomAPI_Pnt2d> toPoint(const FeaturePtr& theMacroCircle,
1222                                               const std::string& thePointAttrName,
1223                                               const std::string& theRefPointAttrName)
1224 {
1225   AttributePoint2DPtr aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1226       theMacroCircle->attribute(thePointAttrName));
1227   AttributeRefAttrPtr aRefAttr = theMacroCircle->refattr(theRefPointAttrName);
1228
1229   std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointAttr->pnt();
1230   if (aRefAttr) {
1231     if (aRefAttr->isObject()) {
1232       // project a point onto selected feature
1233       std::shared_ptr<SketchPlugin_Feature> aFeature =
1234           std::dynamic_pointer_cast<SketchPlugin_Feature>(
1235           ModelAPI_Feature::feature(aRefAttr->object()));
1236       if (aFeature) {
1237         SketchPlugin_Sketch* aSketch = aFeature->sketch();
1238         std::shared_ptr<GeomAPI_Edge> anEdge =
1239             std::dynamic_pointer_cast<GeomAPI_Edge>(aFeature->lastResult()->shape());
1240         if (anEdge) {
1241           std::shared_ptr<GeomAPI_Pnt> aPoint3D = aSketch->to3D(aPoint->x(), aPoint->y());
1242           if (anEdge->isLine())
1243             aPoint3D = anEdge->line()->project(aPoint3D);
1244           else if (anEdge->isCircle())
1245             aPoint3D = anEdge->circle()->project(aPoint3D);
1246           if(aPoint3D)
1247             aPoint = aSketch->to2D(aPoint3D);
1248         }
1249       }
1250     } else {
1251       AttributePoint2DPtr anOtherPoint =
1252           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1253       if (anOtherPoint)
1254         aPoint = anOtherPoint->pnt(); // the reference point is much more precise, use it
1255     }
1256   }
1257
1258   return aPoint;
1259 }
1260
1261 static void threePointsOfFeature(const FeaturePtr& theMacroFeature,
1262                                  std::shared_ptr<GeomAPI_Pnt2d> thePoints[3])
1263 {
1264   if (theMacroFeature->getKind() == SketchPlugin_MacroCircle::ID()) {
1265     thePoints[0] = toPoint(theMacroFeature,
1266           SketchPlugin_MacroCircle::FIRST_POINT_ID(),
1267           SketchPlugin_MacroCircle::FIRST_POINT_REF_ID());
1268     thePoints[1] = toPoint(theMacroFeature,
1269           SketchPlugin_MacroCircle::SECOND_POINT_ID(),
1270           SketchPlugin_MacroCircle::SECOND_POINT_REF_ID());
1271     thePoints[2] = toPoint(theMacroFeature,
1272           SketchPlugin_MacroCircle::THIRD_POINT_ID(),
1273           SketchPlugin_MacroCircle::THIRD_POINT_REF_ID());
1274   } else if (theMacroFeature->getKind() == SketchPlugin_MacroArc::ID()) {
1275     thePoints[0] = toPoint(theMacroFeature,
1276           SketchPlugin_MacroArc::START_POINT_2_ID(),
1277           SketchPlugin_MacroArc::START_POINT_REF_ID());
1278     thePoints[1] = toPoint(theMacroFeature,
1279           SketchPlugin_MacroArc::END_POINT_2_ID(),
1280           SketchPlugin_MacroArc::END_POINT_REF_ID());
1281     thePoints[2] = toPoint(theMacroFeature,
1282           SketchPlugin_MacroArc::PASSED_POINT_ID(),
1283           SketchPlugin_MacroArc::PASSED_POINT_REF_ID());
1284   }
1285 }
1286
1287 static bool isPointsOnLine(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint1,
1288                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint2,
1289                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint3)
1290 {
1291   static const double aTolerance = 1.e-7;
1292   if (thePoint1->distance(thePoint2) < aTolerance ||
1293       thePoint1->distance(thePoint3) < aTolerance)
1294     return true;
1295
1296   std::shared_ptr<GeomAPI_Dir2d> aDirP1P2(new GeomAPI_Dir2d(thePoint2->x() - thePoint1->x(),
1297                                                             thePoint2->y() - thePoint1->y()));
1298   std::shared_ptr<GeomAPI_Dir2d> aDirP1P3(new GeomAPI_Dir2d(thePoint3->x() - thePoint1->x(),
1299                                                             thePoint3->y() - thePoint1->y()));
1300   return fabs(aDirP1P2->cross(aDirP1P3)) < aTolerance;
1301 }
1302
1303 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Lin>& theLine,
1304                          const std::shared_ptr<GeomAPI_Pnt>& thePoint1,
1305                          const std::shared_ptr<GeomAPI_Pnt>& thePoint2)
1306 {
1307   static const double aTolerance = 1.e-7;
1308   std::shared_ptr<GeomAPI_Dir> aLineDir = theLine->direction();
1309   std::shared_ptr<GeomAPI_XYZ> aLineLoc = theLine->location()->xyz();
1310
1311   std::shared_ptr<GeomAPI_XYZ> aVec1 = thePoint1->xyz()->decreased(aLineLoc);
1312   // the first point is on the line
1313   if (aVec1->squareModulus() < aTolerance * aTolerance)
1314     return false;
1315   std::shared_ptr<GeomAPI_Dir> aDirP1L(new GeomAPI_Dir(aVec1));
1316   std::shared_ptr<GeomAPI_XYZ> aVec2 = thePoint2->xyz()->decreased(aLineLoc);
1317   // the second point is on the line
1318   if (aVec2->squareModulus() < aTolerance * aTolerance)
1319     return false;
1320   std::shared_ptr<GeomAPI_Dir> aDirP2L(new GeomAPI_Dir(aVec2));
1321
1322   return aLineDir->cross(aDirP1L)->dot(aLineDir->cross(aDirP2L)) > -aTolerance;
1323 }
1324
1325 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Circ>& theCircle,
1326                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint1,
1327                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint2)
1328 {
1329   static const double aTolerance = 1.e-7;
1330   std::shared_ptr<GeomAPI_Pnt> aCenter = theCircle->center();
1331   double aDistP1C = thePoint1->distance(aCenter);
1332   double aDistP2C = thePoint2->distance(aCenter);
1333   return (aDistP1C - theCircle->radius()) * (aDistP2C - theCircle->radius()) > -aTolerance;
1334 }
1335
1336 bool SketchPlugin_ThirdPointValidator::arePointsNotOnLine(
1337     const FeaturePtr& theMacroFeature,
1338     Events_InfoMessage& theError) const
1339 {
1340   static const std::string aErrorPointsOnLine(
1341       "Selected points are on the same line");
1342
1343   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1344   threePointsOfFeature(theMacroFeature, aPoints);
1345
1346   if (isPointsOnLine(aPoints[0], aPoints[1], aPoints[2])) {
1347     theError = aErrorPointsOnLine;
1348     return false;
1349   }
1350   return true;
1351 }
1352
1353 bool SketchPlugin_ThirdPointValidator::arePointsNotSeparated(
1354     const FeaturePtr& theMacroFeature,
1355     const std::list<std::string>& theArguments,
1356     Events_InfoMessage& theError) const
1357 {
1358   static const std::string aErrorPointsApart(
1359       "Selected entity is lying between first two points");
1360
1361   AttributeRefAttrPtr aThirdPointRef = theMacroFeature->refattr(theArguments.front());
1362   FeaturePtr aRefByThird;
1363   if (aThirdPointRef->isObject())
1364     aRefByThird = ModelAPI_Feature::feature(aThirdPointRef->object());
1365   if (!aRefByThird)
1366     return true;
1367
1368   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1369   threePointsOfFeature(theMacroFeature, aPoints);
1370
1371   std::shared_ptr<GeomAPI_Edge> aThirdShape =
1372       std::dynamic_pointer_cast<GeomAPI_Edge>(aRefByThird->lastResult()->shape());
1373   if (!aThirdShape)
1374     return true;
1375
1376   SketchPlugin_Sketch* aSketch =
1377       std::dynamic_pointer_cast<SketchPlugin_Feature>(theMacroFeature)->sketch();
1378   std::shared_ptr<GeomAPI_Pnt> aFirstPnt3D = aSketch->to3D(aPoints[0]->x(), aPoints[0]->y());
1379   std::shared_ptr<GeomAPI_Pnt> aSecondPnt3D = aSketch->to3D(aPoints[1]->x(), aPoints[1]->y());
1380
1381   bool isOk = true;
1382   if (aThirdShape->isLine())
1383     isOk = isOnSameSide(aThirdShape->line(), aFirstPnt3D, aSecondPnt3D);
1384   else if (aThirdShape->isCircle() || aThirdShape->isArc())
1385     isOk = isOnSameSide(aThirdShape->circle(), aFirstPnt3D, aSecondPnt3D);
1386
1387   if (!isOk)
1388     theError = aErrorPointsApart;
1389   return isOk;
1390 }
1391
1392 bool SketchPlugin_ArcEndPointValidator::isValid(
1393     const AttributePtr& theAttribute,
1394     const std::list<std::string>& theArguments,
1395     Events_InfoMessage& theError) const
1396 {
1397   FeaturePtr aFeature = ModelAPI_Feature::feature(theAttribute->owner());
1398   AttributeRefAttrPtr anEndPointRef = aFeature->refattr(theArguments.front());
1399
1400   if(!anEndPointRef.get()) {
1401     return true;
1402   }
1403
1404   ObjectPtr anObject = anEndPointRef->object();
1405   AttributePtr anAttr = anEndPointRef->attr();
1406   if(!anObject.get() && !anAttr.get()) {
1407     return true;
1408   }
1409
1410   if(anEndPointRef->attr().get()) {
1411     return false;
1412   }
1413
1414   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1415   if(aResult.get()) {
1416     GeomShapePtr aShape = aResult->shape();
1417     if(aShape.get() && aShape->isVertex()) {
1418       return false;
1419     }
1420   }
1421
1422   aFeature = ModelAPI_Feature::feature(anObject);
1423   if(aFeature.get()) {
1424     if(aFeature->getKind() == SketchPlugin_Point::ID()) {
1425       return false;
1426     }
1427   }
1428
1429   return true;
1430 }
1431
1432 static GeomShapePtr toInfiniteEdge(const GeomShapePtr theShape)
1433 {
1434   if(!theShape.get()) {
1435     return theShape;
1436   }
1437
1438   if(!theShape->isEdge()) {
1439     return theShape;
1440   }
1441
1442   std::shared_ptr<GeomAPI_Edge> anEdge(new GeomAPI_Edge(theShape));
1443
1444   if(!anEdge.get()) {
1445     return theShape;
1446   }
1447
1448   if(anEdge->isLine()) {
1449     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1450     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::line(aLine);
1451     return aShape;
1452   }
1453
1454   if(anEdge->isCircle() || anEdge->isArc()) {
1455     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1456     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::lineCircle(aCircle);
1457     return aShape;
1458   }
1459
1460   return theShape;
1461 }
1462
1463 bool SketchPlugin_ArcEndPointIntersectionValidator::isValid(
1464     const AttributePtr& theAttribute,
1465     const std::list<std::string>& theArguments,
1466     Events_InfoMessage& theError) const
1467 {
1468   std::shared_ptr<SketchPlugin_MacroArc> anArcFeature =
1469       std::dynamic_pointer_cast<SketchPlugin_MacroArc>(theAttribute->owner());
1470   AttributeRefAttrPtr anEndPointRef = anArcFeature->refattr(theArguments.front());
1471
1472   if(!anEndPointRef.get()) {
1473     return true;
1474   }
1475
1476   GeomShapePtr anArcShape = toInfiniteEdge(anArcFeature->getArcShape(false));
1477
1478   if(!anArcShape.get() || anArcShape->isNull()) {
1479     return true;
1480   }
1481
1482   ObjectPtr anObject = anEndPointRef->object();
1483   AttributePtr anAttr = anEndPointRef->attr();
1484   if(!anObject.get() && !anAttr.get()) {
1485     return true;
1486   }
1487
1488   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1489   if(aResult.get()) {
1490     GeomShapePtr aShape = aResult->shape();
1491     if (!aShape->isEdge())
1492       return true;
1493     aShape = toInfiniteEdge(aShape);
1494     if(aShape.get() && !aShape->isNull()) {
1495       if(anArcShape->isIntersect(aShape)) {
1496         return true;
1497       }
1498     }
1499   }
1500
1501   FeaturePtr aSelectedFeature = ModelAPI_Feature::feature(anObject);
1502   if(aSelectedFeature.get()) {
1503     std::list<ResultPtr> aResults = aSelectedFeature->results();
1504     for(std::list<ResultPtr>::const_iterator anIt = aResults.cbegin();
1505         anIt != aResults.cend();
1506         ++anIt)
1507     {
1508       GeomShapePtr aShape = (*anIt)->shape();
1509       if (!aShape->isEdge())
1510         return true;
1511       aShape = toInfiniteEdge(aShape);
1512       if(aShape.get() && !aShape->isNull()) {
1513         if(anArcShape->isIntersect(aShape)) {
1514           return true;
1515         }
1516       }
1517     }
1518   }
1519
1520   return false;
1521 }
1522
1523 bool SketchPlugin_HasNoConstraint::isValid(const AttributePtr& theAttribute,
1524                                            const std::list<std::string>& theArguments,
1525                                            Events_InfoMessage& theError) const
1526 {
1527   std::set<std::string> aFeatureKinds;
1528   for (std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1529        anArgIt != theArguments.end(); anArgIt++) {
1530     aFeatureKinds.insert(*anArgIt);
1531   }
1532
1533   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1534     theError = "The attribute with the %1 type is not processed";
1535     theError.arg(theAttribute->attributeType());
1536     return false;
1537   }
1538
1539   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
1540                                                                       (theAttribute);
1541   bool isObject = aRefAttr->isObject();
1542   if (!isObject) {
1543     theError = "It uses an empty object";
1544     return false;
1545   }
1546   ObjectPtr anObject = aRefAttr->object();
1547   FeaturePtr aFeature = ModelAPI_Feature::feature(anObject);
1548   if (!aFeature.get()) {
1549     theError = "The feature of the checked attribute is empty";
1550     return false;
1551   }
1552
1553   FeaturePtr aCurrentFeature = ModelAPI_Feature::feature(aRefAttr->owner());
1554
1555   std::set<AttributePtr> aRefsList = anObject->data()->refsToMe();
1556   std::set<AttributePtr>::const_iterator anIt = aRefsList.begin();
1557   for (; anIt != aRefsList.end(); anIt++) {
1558     FeaturePtr aRefFeature = ModelAPI_Feature::feature((*anIt)->owner());
1559     if (aRefFeature.get() && aCurrentFeature != aRefFeature &&
1560         aFeatureKinds.find(aRefFeature->getKind()) != aFeatureKinds.end())
1561       return false; // constraint is found, that means that the check is not valid
1562   }
1563   return true;
1564 }
1565
1566 bool SketchPlugin_ReplicationReferenceValidator::isValid(
1567     const AttributePtr& theAttribute,
1568     const std::list<std::string>& theArguments,
1569     Events_InfoMessage& theError) const
1570 {
1571   AttributeRefAttrPtr aRefAttr =
1572       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1573   if (!aRefAttr)
1574   {
1575     theError = "Incorrect attribute";
1576     return false;
1577   }
1578
1579   ObjectPtr anOwner;
1580   if (aRefAttr->isObject())
1581     anOwner = aRefAttr->object();
1582   else
1583   {
1584     AttributePtr anAttr = aRefAttr->attr();
1585     anOwner = anAttr->owner();
1586   }
1587   FeaturePtr anAttrOwnerFeature = ModelAPI_Feature::feature(anOwner);
1588   if (!anAttrOwnerFeature)
1589     return true;
1590   AttributeBooleanPtr aCopyAttr = anAttrOwnerFeature->boolean(SketchPlugin_SketchEntity::COPY_ID());
1591   if (!aCopyAttr || !aCopyAttr->value())
1592     return true; // feature is not a copy, thus valid
1593
1594   // check the copy feature is already referred by the "Multi" feature
1595   FeaturePtr aMultiFeature = ModelAPI_Feature::feature(theAttribute->owner());
1596   AttributeRefListPtr aRefList = aMultiFeature->reflist(theArguments.front());
1597   for (int i = 0; i < aRefList->size(); ++i)
1598   {
1599     FeaturePtr aRefOwner = ModelAPI_Feature::feature(aRefList->object(i));
1600     if (aRefOwner == anAttrOwnerFeature)
1601     {
1602       theError = "Attribute refers to the object generated by this feature";
1603       return false;
1604     }
1605   }
1606
1607   return true;
1608 }
1609
1610 bool SketchPlugin_SketchFeatureValidator::isValid(const AttributePtr& theAttribute,
1611                                                   const std::list<std::string>& theArguments,
1612                                                   Events_InfoMessage& theError) const
1613 {
1614   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1615     theError = "The attribute with the %1 type is not processed";
1616     theError.arg(theAttribute->attributeType());
1617     return false;
1618   }
1619
1620   // check the attribute refers to a sketch feature
1621   AttributeRefAttrPtr aRefAttr =
1622       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1623   bool isSketchFeature = aRefAttr->isObject();
1624   if (isSketchFeature) {
1625     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1626     isSketchFeature = aFeature.get() != NULL;
1627     if (isSketchFeature) {
1628       std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1629           std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
1630       isSketchFeature = aSketchFeature.get() != NULL;
1631     }
1632   }
1633
1634   if (isSketchFeature)
1635     return true;
1636
1637   theError = "The object selected is not a sketch feature";
1638   return false;
1639 }
1640
1641 bool SketchPlugin_MultiRotationAngleValidator::isValid(const AttributePtr& theAttribute,
1642                                                        const std::list<std::string>& theArguments,
1643                                                        Events_InfoMessage& theError) const
1644 {
1645   if (theAttribute->attributeType() != ModelAPI_AttributeDouble::typeId()) {
1646     theError = "The attribute with the %1 type is not processed";
1647     theError.arg(theAttribute->attributeType());
1648     return false;
1649   }
1650
1651   AttributeDoublePtr anAngleAttr =
1652     std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(theAttribute);
1653
1654   FeaturePtr aMultiRotation = ModelAPI_Feature::feature(theAttribute->owner());
1655   AttributeStringPtr anAngleType =
1656       aMultiRotation->string(SketchPlugin_MultiRotation::ANGLE_TYPE());
1657   AttributeIntegerPtr aNbCopies =
1658       aMultiRotation->integer(SketchPlugin_MultiRotation::NUMBER_OF_OBJECTS_ID());
1659
1660   if (anAngleType->value() != "FullAngle")
1661   {
1662     double aFullAngleValue = anAngleAttr->value() * (aNbCopies->value() - 1);
1663     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 359.9999999)
1664     {
1665       theError = "Rotation single angle should produce full angle less than 360 degree";
1666       return false;
1667     }
1668   }
1669   else
1670   {
1671     double aFullAngleValue = anAngleAttr->value();
1672     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 360.0000001)
1673     {
1674       theError = "Rotation full angle should be in range [0, 360]";
1675       return false;
1676     }
1677   }
1678
1679   return true;
1680 }