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)
 472       continue;
 473     if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 474       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 475         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
 476       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 477         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
 478       if(anAttrRefA.get()) {
 479         ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
 480         if(aResA.get()) {
 481           DocumentPtr aDoc = aResA->document();
 482           if(aDoc.get()) {
 483             FeaturePtr aFeatureA = aDoc->feature(aResA);
 484             if(aFeatureA.get() && aFeatureA == theFeature) {
 485               return true;
 486             }
 487           }
 488         }
 489       }
 490       if(anAttrRefB.get()) {
 491         ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
 492         if(aResB.get()) {
 493           DocumentPtr aDoc = aResB->document();
 494           if(aDoc.get()) {
 495             FeaturePtr aFeatureB = aDoc->feature(aResB);
 496             if(aFeatureB.get() && aFeatureB == theFeature) {
 497               return true;
 498             }
 499           }
 500         }
 501       }
 502     }
 503   }
 504   return false;
 505 }
 506
 507 static bool isPointPointCoincidence(const FeaturePtr& theCoincidence)
 508 {
 509   AttributeRefAttrPtr aRefAttr[2] = {
 510       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_A()),
 511       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_B())
 512   };
 513
 514   bool arePoints = true;
 515   for (int i = 0; i < 2 && arePoints; ++i) {
 516     if (aRefAttr[i]->isObject()) {
 517       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 518       arePoints = aFeature.get() && aFeature->getKind() == SketchPlugin_Point::ID();
 519     } else
 520       arePoints = aRefAttr[i]->attr().get() != NULL;
 521   }
 522   return arePoints;
 523 }
 524
 525 bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
 526                                                  const std::list<std::string>& theArguments,
 527                                                  Events_InfoMessage& theError) const
 528 {
 529   AttributeRefAttrPtr aPointRefAttr =
 530     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 531   if(!aPointRefAttr.get()) {
 532     theError = "Error: Point not selected.";
 533     return false;
 534   }
 535
 536   AttributePtr aPointAttribute = aPointRefAttr->attr();
 537   if (!aPointAttribute.get()) {
 538     theError = "Error: Bad point selected.";
 539     return false;
 540   }
 541   std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt =
 542     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
 543
 544   // Obtain constraint coincidence for the fillet point.
 545   const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
 546   FeaturePtr aConstraintCoincidence;
 547   for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin();
 548       anIt != aRefsList.cend(); ++anIt) {
 549     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 550     FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 551     if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 552       if (!isPointPointCoincidence(aConstrFeature))
 553         continue;
 554
 555       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 556         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 557       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 558         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 559
 560       AttributePtr anAttrA = anAttrRefA->attr();
 561       if(aPointAttribute == anAttrA) {
 562         aConstraintCoincidence = aConstrFeature;
 563         break;
 564       }
 565
 566       AttributePtr anAttrB = anAttrRefB->attr();
 567       if(aPointAttribute == anAttrB) {
 568         aConstraintCoincidence = aConstrFeature;
 569         break;
 570       }
 571     }
 572   }
 573
 574   if(!aConstraintCoincidence.get()) {
 575     theError = "Error: one of the selected point does not have coicidence.";
 576     return false;
 577   }
 578
 579   // Get coincides from constraint.
 580   std::set<FeaturePtr> aCoinsides;
 581   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 582                                         SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 583                                         aCoinsides,
 584                                         true);
 585   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 586                                         SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 587                                         aCoinsides,
 588                                         true);
 589
 590   // Remove points and external lines from set of coincides.
 591   std::set<FeaturePtr> aNewSetOfCoincides;
 592   for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 593       anIt != aCoinsides.end(); ++anIt) {
 594     std::shared_ptr<SketchPlugin_SketchEntity> aSketchEntity =
 595       std::dynamic_pointer_cast<SketchPlugin_SketchEntity>(*anIt);
 596     if(aSketchEntity.get() && (aSketchEntity->isCopy() || aSketchEntity->isExternal())) {
 597       continue;
 598     }
 599     if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
 600         (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
 601           continue;
 602     }
 603     if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
 604       AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 605       std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt =
 606         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
 607       double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
 608       if(aDistSelectedArcCenter < tolerance) {
 609         continue;
 610       }
 611     }
 612     aNewSetOfCoincides.insert(*anIt);
 613   }
 614   aCoinsides = aNewSetOfCoincides;
 615
 616   // If we still have more than two coincides remove auxilary entities from set of coincides.
 617   if(aCoinsides.size() > 2) {
 618     aNewSetOfCoincides.clear();
 619     for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 620         anIt != aCoinsides.end(); ++anIt) {
 621       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 622         aNewSetOfCoincides.insert(*anIt);
 623       }
 624     }
 625     aCoinsides = aNewSetOfCoincides;
 626   }
 627
 628   if(aCoinsides.size() != 2) {
 629     theError = "Error: One of the selected points does not have two suitable edges for fillet.";
 630     return false;
 631   }
 632
 633   // Check that selected edges don't have tangent constraint.
 634   std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 635   FeaturePtr aFirstFeature = *anIt++;
 636   FeaturePtr aSecondFeature = *anIt;
 637   const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
 638   if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
 639     theError = "Error: Edges in selected point has tangent constraint.";
 640     return false;
 641   }
 642
 643   std::list<ResultPtr> aFirstResults = aFirstFeature->results();
 644   for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin();
 645       aResIt != aFirstResults.end(); ++aResIt) {
 646     ResultPtr aRes = *aResIt;
 647     const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
 648     if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
 649       theError = "Error: Edges in selected point has tangent constraint.";
 650       return false;
 651     }
 652   }
 653
 654   // Check the features are not tangent
 655   std::shared_ptr<GeomAPI_Shape> aFirstShape = aFirstFeature->lastResult()->shape();
 656   std::shared_ptr<GeomAPI_Shape> aSecondShape = aSecondFeature->lastResult()->shape();
 657   if (!aFirstShape || !aFirstShape->isEdge() ||
 658       !aSecondShape || !aSecondShape->isEdge()) {
 659     theError = "Error: At least on of the features is not an edge";
 660     return false;
 661   }
 662
 663   std::shared_ptr<GeomAPI_Edge> anEdge1 = std::dynamic_pointer_cast<GeomAPI_Edge>(aFirstShape);
 664   std::shared_ptr<GeomAPI_Edge> anEdge2 = std::dynamic_pointer_cast<GeomAPI_Edge>(aSecondShape);
 665
 666   static const double TOL = 1.e-7;
 667   if (anEdge1->isLine() && anEdge2->isLine()) {
 668     // Check that lines not collinear
 669     std::shared_ptr<GeomAPI_Dir> aDir1 = anEdge1->line()->direction();
 670     std::shared_ptr<GeomAPI_Dir> aDir2 = anEdge2->line()->direction();
 671     double aCross = aDir1->cross(aDir2)->squareModulus();
 672     if (aCross < TOL * TOL)
 673       return false;
 674   } else if (anEdge1->isArc() && anEdge2->isArc()) {
 675     // check the circles are not tangent
 676     std::shared_ptr<GeomAPI_Circ> aCirc1 = anEdge1->circle();
 677     std::shared_ptr<GeomAPI_Circ> aCirc2 = anEdge2->circle();
 678     double aDistCC = aCirc1->center()->distance(aCirc2->center());
 679     double aRadSum = aCirc1->radius() + aCirc2->radius();
 680     double aRadDiff = fabs(aCirc1->radius() - aCirc2->radius());
 681     if (fabs(aDistCC - aRadSum) < TOL || fabs(aDistCC - aRadDiff) < TOL)
 682       return false;
 683   } else {
 684     // check whether line and arc are tangent
 685     std::shared_ptr<GeomAPI_Circ> aCirc;
 686     std::shared_ptr<GeomAPI_Lin> aLine;
 687     if (anEdge1->isLine()) {
 688       aLine = anEdge1->line();
 689       aCirc = anEdge2->circle();
 690     } else {
 691       aCirc = anEdge1->circle();
 692       aLine = anEdge2->line();
 693     }
 694
 695     double aDistCL = aLine->distance(aCirc->center());
 696     if (fabs(aDistCL - aCirc->radius()) < TOL)
 697       return false;
 698   }
 699
 700   return true;
 701 }
 702
 703 bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
 704                                                     const std::list<std::string>& theArguments,
 705                                                     Events_InfoMessage& theError) const
 706 {
 707   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 708     theError = "The attribute with the %1 type is not processed";
 709     theError.arg(theAttribute->attributeType());
 710     return false;
 711   }
 712
 713   // there is a check whether the feature contains a point and a linear edge or two point values
 714   std::string aParamA = theArguments.front();
 715   SessionPtr aMgr = ModelAPI_Session::get();
 716   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 717
 718   FeaturePtr anAttributeFeature =
 719     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 720   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 721   AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 722
 723   AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
 724   int aNbPoints = 0;
 725   int aNbLines = 0;
 726   for (int i = 0; i < 2; ++i) {
 727     if (!aRefAttrs[i]->isObject())
 728       ++aNbPoints;
 729     else {
 730       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
 731       if (!aFeature) {
 732         if (aNbPoints + aNbLines != 0)
 733           return true;
 734         else continue;
 735       }
 736
 737       if (aFeature->getKind() == SketchPlugin_Point::ID())
 738         ++aNbPoints;
 739       else if (aFeature->getKind() == SketchPlugin_Line::ID())
 740         ++aNbLines;
 741     }
 742   }
 743
 744   if (aNbPoints != 1 || aNbLines != 1) {
 745     theError = "Middle point constraint allows points and lines only";
 746     return false;
 747   }
 748   return true;
 749 }
 750
 751 bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
 752                                                     const std::list<std::string>& /*theArguments*/,
 753                                                     Events_InfoMessage& theError) const
 754 {
 755   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 756     theError = "The attribute with the %1 type is not processed";
 757     theError.arg(theAttribute->attributeType());
 758     return false;
 759   }
 760   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 761   AttributePtr anAttr = aRefAttr->attr();
 762   if (!anAttr) {
 763     theError = "The attribute %1 should be a point";
 764     theError.arg(theAttribute->id());
 765     return false;
 766   }
 767
 768   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 769   const std::string& aFeatureType = anAttrFeature->getKind();
 770   if (aFeatureType == SketchPlugin_Arc::ID()) {
 771     // selected point should not be a center of arc
 772     const std::string& aPntId = anAttr->id();
 773     if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
 774       theError = "The attribute %1 is not supported";
 775       theError.arg(aPntId);
 776       return false;
 777     }
 778   }
 779   else if (aFeatureType == SketchPlugin_Line::ID()) {
 780     // selected point should be bound point of line
 781     const std::string& aPntId = anAttr->id();
 782     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 783       theError = "The attribute %1 is not supported";
 784       theError.arg(aPntId);
 785       return false;
 786     }
 787   }
 788   else {
 789     theError = "Unable to build tangent arc on %1";
 790     theError.arg(anAttrFeature->getKind());
 791     return false;
 792   }
 793
 794   return true;
 795 }
 796
 797 bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
 798                                                  const std::list<std::string>& theArguments,
 799                                                  Events_InfoMessage& theError) const
 800 {
 801   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 802     theError = "The attribute with the %1 type is not processed";
 803     theError.arg(theAttribute->attributeType());
 804     return false;
 805   }
 806   AttributeSelectionPtr anExternalAttr =
 807       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 808   std::shared_ptr<GeomAPI_Edge> anEdge;
 809   if (anExternalAttr && anExternalAttr->value() && anExternalAttr->value()->isEdge()) {
 810     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(anExternalAttr->value()));
 811   } else if(anExternalAttr->context() && anExternalAttr->context()->shape() &&
 812             anExternalAttr->context()->shape()->isEdge()) {
 813     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(anExternalAttr->context()->shape()));
 814   }
 815
 816   if (!anEdge) {
 817     theError = "The attribute %1 should be an edge";
 818     theError.arg(theAttribute->id());
 819     return false;
 820   }
 821
 822   // find a sketch
 823   std::shared_ptr<SketchPlugin_Sketch> aSketch;
 824   std::set<AttributePtr> aRefs = anExternalAttr->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   // check the edge is intersected with sketch plane
 840   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
 841
 842   std::list<GeomPointPtr> anIntersectionsPoints;
 843   anEdge->intersectWithPlane(aPlane, anIntersectionsPoints);
 844   if (anIntersectionsPoints.empty()) {
 845     theError = "The edge is not intersected with sketch plane";
 846     return false;
 847   }
 848   return true;
 849 }
 850
 851 bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
 852                                           const std::list<std::string>& theArguments,
 853                                           Events_InfoMessage& theError) const
 854 {
 855   bool aValid = false;
 856
 857   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 858     theError = "The attribute with the %1 type is not processed";
 859     theError.arg(theAttribute->attributeType());
 860     return aValid;
 861   }
 862   AttributeReferencePtr aFeatureAttr =
 863             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 864
 865   ObjectPtr anAttrObject = aFeatureAttr->value();
 866   FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
 867   if (!anAttrFeature)
 868     return aValid;
 869
 870   std::string aKind = anAttrFeature->getKind();
 871   if (aKind == SketchPlugin_Line::ID() ||
 872       aKind == SketchPlugin_Arc::ID() ||
 873       aKind == SketchPlugin_Circle::ID()) {
 874
 875     std::set<ResultPtr> anEdgeShapes;
 876     ModelGeomAlgo_Shape::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
 877     if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
 878       return aValid;
 879
 880     // coincidences to the feature
 881     std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
 882     ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature,
 883                         SketchPlugin_ConstraintCoincidence::ID(),
 884                         aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
 885
 886     GeomShapePtr anAttrShape = (*anEdgeShapes.begin())->shape();
 887     std::shared_ptr<SketchPlugin_Feature> aSFeature =
 888                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
 889     SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 890
 891     std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
 892     std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
 893         aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
 894     std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 895         aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
 896     std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 897         aData->attribute(SketchPlugin_Sketch::NORM_ID()));
 898     std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
 899
 900     typedef std::map<std::shared_ptr<GeomAPI_Pnt>,
 901                      std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
 902                                std::list<std::shared_ptr<ModelAPI_Object> > > > PointToRefsMap;
 903     PointToRefsMap aPointsInfo;
 904
 905     ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
 906                                                 aX->dir(), aDirY, aPointsInfo);
 907     int aCoincidentToFeature = (int)aPointsInfo.size();
 908     if (aKind == SketchPlugin_Circle::ID())
 909       aValid = aCoincidentToFeature >= 2;
 910     else
 911       aValid = aCoincidentToFeature >= 1;
 912   }
 913
 914   return aValid;
 915 }
 916
 917 bool SketchPlugin_TrimValidator::isValid(const AttributePtr& theAttribute,
 918                                          const std::list<std::string>& theArguments,
 919                                          Events_InfoMessage& theError) const
 920 {
 921   bool aValid = false;
 922
 923   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
 924     theError = "The attribute with the %1 type is not processed";
 925     theError.arg(theAttribute->attributeType());
 926     return aValid;
 927   }
 928   AttributeReferencePtr aBaseObjectAttr =
 929             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 930
 931   std::shared_ptr<SketchPlugin_Feature> aTrimFeature =
 932                  std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 933
 934   ObjectPtr aBaseObject = aBaseObjectAttr->value();
 935   if (!aBaseObject) {
 936     AttributePtr aPreviewAttr = aTrimFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
 937     aBaseObjectAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
 938     aBaseObject = aBaseObjectAttr->value();
 939   }
 940
 941   FeaturePtr aBaseFeature = ModelAPI_Feature::feature(aBaseObject);
 942   if (!aBaseFeature)
 943     return aValid;
 944
 945   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 946                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(aBaseFeature);
 947   if (!aSketchFeature.get() || aSketchFeature->isCopy())
 948     return aValid;
 949
 950   std::string aKind = aBaseFeature->getKind();
 951   if (aKind != SketchPlugin_Line::ID() &&
 952       aKind != SketchPlugin_Arc::ID() &&
 953       aKind != SketchPlugin_Circle::ID())
 954     return aValid;
 955
 956   // point on feature
 957   AttributePoint2DPtr aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 958                        aTrimFeature->data()->attribute(SketchPlugin_Trim::PREVIEW_POINT()));
 959
 960   SketchPlugin_Sketch* aSketch = aTrimFeature->sketch();
 961
 962   std::shared_ptr<GeomAPI_Pnt2d> anAttributePnt2d = aPoint->pnt();
 963   std::shared_ptr<GeomAPI_Pnt> anAttributePnt = aSketch->to3D(anAttributePnt2d->x(),
 964                                                               anAttributePnt2d->y());
 965
 966   std::map<ObjectPtr, std::set<GeomShapePtr> > aCashedShapes;
 967   std::map<ObjectPtr, std::map<std::shared_ptr<GeomAPI_Pnt>,
 968            std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
 969                      std::list<std::shared_ptr<ModelAPI_Object> > > > > anObjectToPoints;
 970   SketchPlugin_Trim::fillObjectShapes(aBaseObject, aSketch->data()->owner(),
 971                                       aCashedShapes, anObjectToPoints);
 972   const std::set<GeomShapePtr>& aShapes = aCashedShapes[aBaseObject];
 973
 974   return aShapes.size() > 1;
 975 }
 976
 977 bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
 978                                                const std::list<std::string>& theArguments,
 979                                                Events_InfoMessage& theError) const
 980 {
 981   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 982     theError = "The attribute with the %1 type is not processed";
 983     theError.arg(theAttribute->attributeType());
 984     return false;
 985   }
 986
 987   AttributeSelectionPtr aFeatureAttr =
 988       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 989   std::shared_ptr<GeomAPI_Edge> anEdge;
 990   std::shared_ptr<SketchPlugin_Feature> aSketchFeature;
 991   if (aFeatureAttr.get()) {
 992     GeomShapePtr aVal = aFeatureAttr->value();
 993     ResultPtr aRes = aFeatureAttr->context();
 994     if (aVal && aVal->isVertex())
 995       return true; // vertex is always could be projected
 996     if (aVal && aVal->isEdge()) {
 997       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->value()));
 998     } else if(aRes && aRes->shape()) {
 999       if (aRes->shape()->isVertex())
1000         return true; // vertex is always could be projected
1001       else if (aRes->shape()->isEdge())
1002         anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->context()->shape()));
1003     }
1004
1005     // try to convert result to sketch feature
1006     if (aRes) {
1007       aSketchFeature =
1008         std::dynamic_pointer_cast<SketchPlugin_Feature>(ModelAPI_Feature::feature(aRes));
1009     }
1010   }
1011   if (!anEdge) {
1012     theError = "The attribute %1 should be an edge or vertex";
1013     theError.arg(theAttribute->id());
1014     return false;
1015   }
1016
1017   // find a sketch
1018   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1019   std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
1020   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1021   for (; anIt != aRefs.end(); ++anIt) {
1022     CompositeFeaturePtr aComp =
1023         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1024     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1025       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1026       break;
1027     }
1028   }
1029   if (!aSketch) {
1030     theError = "There is no sketch referring to the current feature";
1031     return false;
1032   }
1033   if (aSketchFeature && aSketch.get() == aSketchFeature->sketch()) {
1034     theError = "Unable to project feature from the same sketch";
1035     return false;
1036   }
1037
1038   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1039   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
1040   std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
1041
1042   if (anEdge->isLine()) {
1043     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1044     std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
1045     double aDot = fabs(aNormal->dot(aLineDir));
1046     bool aValid = fabs(aDot - 1.0) >= tolerance * tolerance;
1047     if (!aValid)
1048       theError = "Error: Edge is already in the sketch plane.";
1049     return aValid;
1050   }
1051   else if (anEdge->isCircle() || anEdge->isArc()) {
1052     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1053     std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
1054     double aDot = fabs(aNormal->dot(aCircNormal));
1055     bool aValid = fabs(aDot - 1.0) < tolerance * tolerance;
1056     if (!aValid)
1057       theError.arg(anEdge->isCircle() ? "Error: Cirlce is already in the sketch plane."
1058                                       : "Error: Arc is already in the sketch plane.");
1059     return aValid;
1060   }
1061
1062   theError = "Error: Selected object is not line, circle or arc.";
1063   return false;
1064 }
1065
1066
1067 static std::set<FeaturePtr> common(const std::set<FeaturePtr>& theSet1,
1068                                    const std::set<FeaturePtr>& theSet2)
1069 {
1070   std::set<FeaturePtr> aCommon;
1071   if (theSet1.empty() || theSet2.empty())
1072     return aCommon;
1073
1074   std::set<FeaturePtr>::const_iterator anIt2 = theSet2.begin();
1075   for (; anIt2 != theSet2.end(); ++anIt2)
1076     if (theSet1.find(*anIt2) != theSet1.end())
1077       aCommon.insert(*anIt2);
1078   return aCommon;
1079 }
1080
1081 bool SketchPlugin_DifferentReferenceValidator::isValid(
1082     const AttributePtr& theAttribute,
1083     const std::list<std::string>& theArguments,
1084     Events_InfoMessage& theError) const
1085 {
1086   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1087
1088   int aNbFeaturesReferred = 0;
1089   int aNbAttributesReferred = 0;
1090   std::set<FeaturePtr> aCommonReferredFeatures;
1091
1092   // find all features referred by attributes listed in theArguments
1093   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1094   for (; anArgIt != theArguments.end(); ++anArgIt) {
1095     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1096     if (!aRefAttr)
1097       continue;
1098
1099     std::set<FeaturePtr> aCoincidentFeatures;
1100     if (aRefAttr->isObject()) {
1101       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1102       if (aFeature) {
1103         aCoincidentFeatures.insert(aFeature);
1104         aNbFeaturesReferred += 1;
1105       }
1106     } else {
1107       AttributePoint2DPtr aPoint =
1108           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1109       if (aPoint) {
1110         aCoincidentFeatures = SketchPlugin_Tools::findFeaturesCoincidentToPoint(aPoint);
1111         aNbAttributesReferred += 1;
1112       }
1113     }
1114
1115     if (aCommonReferredFeatures.empty())
1116       aCommonReferredFeatures = aCoincidentFeatures;
1117     else
1118       aCommonReferredFeatures = common(aCommonReferredFeatures, aCoincidentFeatures);
1119
1120     if (aCommonReferredFeatures.empty())
1121       return true;
1122   }
1123
1124   bool isOk = aNbFeaturesReferred < 1;
1125   if (aNbFeaturesReferred == 1) {
1126     if (aCommonReferredFeatures.size() == 1) {
1127       FeaturePtr aFeature = *aCommonReferredFeatures.begin();
1128       isOk = aNbAttributesReferred <= 1 ||
1129              aFeature->getKind() == SketchPlugin_Circle::ID() ||
1130              aFeature->getKind() == SketchPlugin_Arc::ID();
1131     } else
1132       isOk = false;
1133   }
1134
1135   if (!isOk)
1136     theError = "Attributes are referred to the same feature";
1137   return isOk;
1138 }
1139
1140 bool SketchPlugin_DifferentPointReferenceValidator::isValid(
1141     const AttributePtr& theAttribute,
1142     const std::list<std::string>& theArguments,
1143     Events_InfoMessage& theError) const
1144 {
1145   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1146   std::set<AttributePoint2DPtr> aReferredCoincidentPoints;
1147
1148   // find all points referred by attributes listed in theArguments
1149   bool hasRefsToPoints = false;
1150   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1151   for (; anArgIt != theArguments.end(); ++anArgIt) {
1152     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1153     if (!aRefAttr)
1154       continue;
1155
1156     if (!aRefAttr->isObject()) {
1157       AttributePoint2DPtr aPoint =
1158           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1159       if (aReferredCoincidentPoints.empty())
1160         aReferredCoincidentPoints = SketchPlugin_Tools::findPointsCoincidentToPoint(aPoint);
1161       else if (aReferredCoincidentPoints.find(aPoint) == aReferredCoincidentPoints.end())
1162         return true; // non-coincident point has been found
1163       else
1164         hasRefsToPoints = true;
1165     }
1166   }
1167
1168   if (hasRefsToPoints)
1169     theError = "Attributes are referred to the same point";
1170   return !hasRefsToPoints;
1171 }
1172
1173 bool SketchPlugin_CirclePassedPointValidator::isValid(
1174     const AttributePtr& theAttribute,
1175     const std::list<std::string>&,
1176     Events_InfoMessage& theError) const
1177 {
1178   static const std::string aErrorMessage(
1179       "Passed point refers to the same feature as a center point");
1180
1181   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1182
1183   AttributeRefAttrPtr aCenterRef =
1184       anOwner->refattr(SketchPlugin_MacroCircle::CENTER_POINT_REF_ID());
1185   AttributeRefAttrPtr aPassedRef =
1186       anOwner->refattr(SketchPlugin_MacroCircle::PASSED_POINT_REF_ID());
1187
1188   if (!aPassedRef->isObject())
1189     return true;
1190
1191   FeaturePtr aPassedFeature = ModelAPI_Feature::feature(aPassedRef->object());
1192   if (!aPassedFeature)
1193     return true;
1194
1195   if (aCenterRef->isObject()) {
1196     if (aCenterRef->object() == aPassedRef->object()) {
1197       theError = aErrorMessage;
1198       return false;
1199     }
1200   } else {
1201     AttributePoint2DPtr aCenterPoint =
1202         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aCenterRef->attr());
1203     if (aCenterPoint) {
1204       std::set<FeaturePtr> aCoincidentFeatures =
1205           SketchPlugin_Tools::findFeaturesCoincidentToPoint(aCenterPoint);
1206       // check one of coincident features is a feature referred by passed point
1207       std::set<FeaturePtr>::const_iterator anIt = aCoincidentFeatures.begin();
1208       for(; anIt != aCoincidentFeatures.end(); ++anIt)
1209         if (*anIt == aPassedFeature) {
1210           theError = aErrorMessage;
1211           return false;
1212         }
1213     }
1214   }
1215   return true;
1216 }
1217
1218 bool SketchPlugin_ThirdPointValidator::isValid(
1219     const AttributePtr& theAttribute,
1220     const std::list<std::string>& theArguments,
1221     Events_InfoMessage& theError) const
1222 {
1223   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1224   return arePointsNotOnLine(anOwner, theError) &&
1225          arePointsNotSeparated(anOwner, theArguments, theError);
1226 }
1227
1228 static std::shared_ptr<GeomAPI_Pnt2d> toPoint(const FeaturePtr& theMacroCircle,
1229                                               const std::string& thePointAttrName,
1230                                               const std::string& theRefPointAttrName)
1231 {
1232   AttributePoint2DPtr aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1233       theMacroCircle->attribute(thePointAttrName));
1234   AttributeRefAttrPtr aRefAttr = theMacroCircle->refattr(theRefPointAttrName);
1235
1236   std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointAttr->pnt();
1237   if (aRefAttr) {
1238     if (aRefAttr->isObject()) {
1239       // project a point onto selected feature
1240       std::shared_ptr<SketchPlugin_Feature> aFeature =
1241           std::dynamic_pointer_cast<SketchPlugin_Feature>(
1242           ModelAPI_Feature::feature(aRefAttr->object()));
1243       if (aFeature) {
1244         SketchPlugin_Sketch* aSketch = aFeature->sketch();
1245         std::shared_ptr<GeomAPI_Edge> anEdge =
1246             std::dynamic_pointer_cast<GeomAPI_Edge>(aFeature->lastResult()->shape());
1247         if (anEdge) {
1248           std::shared_ptr<GeomAPI_Pnt> aPoint3D = aSketch->to3D(aPoint->x(), aPoint->y());
1249           if (anEdge->isLine())
1250             aPoint3D = anEdge->line()->project(aPoint3D);
1251           else if (anEdge->isCircle())
1252             aPoint3D = anEdge->circle()->project(aPoint3D);
1253           if(aPoint3D)
1254             aPoint = aSketch->to2D(aPoint3D);
1255         }
1256       }
1257     } else {
1258       AttributePoint2DPtr anOtherPoint =
1259           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1260       if (anOtherPoint)
1261         aPoint = anOtherPoint->pnt(); // the reference point is much more precise, use it
1262     }
1263   }
1264
1265   return aPoint;
1266 }
1267
1268 static void threePointsOfFeature(const FeaturePtr& theMacroFeature,
1269                                  std::shared_ptr<GeomAPI_Pnt2d> thePoints[3])
1270 {
1271   if (theMacroFeature->getKind() == SketchPlugin_MacroCircle::ID()) {
1272     thePoints[0] = toPoint(theMacroFeature,
1273           SketchPlugin_MacroCircle::FIRST_POINT_ID(),
1274           SketchPlugin_MacroCircle::FIRST_POINT_REF_ID());
1275     thePoints[1] = toPoint(theMacroFeature,
1276           SketchPlugin_MacroCircle::SECOND_POINT_ID(),
1277           SketchPlugin_MacroCircle::SECOND_POINT_REF_ID());
1278     thePoints[2] = toPoint(theMacroFeature,
1279           SketchPlugin_MacroCircle::THIRD_POINT_ID(),
1280           SketchPlugin_MacroCircle::THIRD_POINT_REF_ID());
1281   } else if (theMacroFeature->getKind() == SketchPlugin_MacroArc::ID()) {
1282     thePoints[0] = toPoint(theMacroFeature,
1283           SketchPlugin_MacroArc::START_POINT_2_ID(),
1284           SketchPlugin_MacroArc::START_POINT_REF_ID());
1285     thePoints[1] = toPoint(theMacroFeature,
1286           SketchPlugin_MacroArc::END_POINT_2_ID(),
1287           SketchPlugin_MacroArc::END_POINT_REF_ID());
1288     thePoints[2] = toPoint(theMacroFeature,
1289           SketchPlugin_MacroArc::PASSED_POINT_ID(),
1290           SketchPlugin_MacroArc::PASSED_POINT_REF_ID());
1291   }
1292 }
1293
1294 static bool isPointsOnLine(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint1,
1295                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint2,
1296                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint3)
1297 {
1298   static const double aTolerance = 1.e-7;
1299   if (thePoint1->distance(thePoint2) < aTolerance ||
1300       thePoint1->distance(thePoint3) < aTolerance)
1301     return true;
1302
1303   std::shared_ptr<GeomAPI_Dir2d> aDirP1P2(new GeomAPI_Dir2d(thePoint2->x() - thePoint1->x(),
1304                                                             thePoint2->y() - thePoint1->y()));
1305   std::shared_ptr<GeomAPI_Dir2d> aDirP1P3(new GeomAPI_Dir2d(thePoint3->x() - thePoint1->x(),
1306                                                             thePoint3->y() - thePoint1->y()));
1307   return fabs(aDirP1P2->cross(aDirP1P3)) < aTolerance;
1308 }
1309
1310 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Lin>& theLine,
1311                          const std::shared_ptr<GeomAPI_Pnt>& thePoint1,
1312                          const std::shared_ptr<GeomAPI_Pnt>& thePoint2)
1313 {
1314   static const double aTolerance = 1.e-7;
1315   std::shared_ptr<GeomAPI_Dir> aLineDir = theLine->direction();
1316   std::shared_ptr<GeomAPI_XYZ> aLineLoc = theLine->location()->xyz();
1317
1318   std::shared_ptr<GeomAPI_XYZ> aVec1 = thePoint1->xyz()->decreased(aLineLoc);
1319   // the first point is on the line
1320   if (aVec1->squareModulus() < aTolerance * aTolerance)
1321     return false;
1322   std::shared_ptr<GeomAPI_Dir> aDirP1L(new GeomAPI_Dir(aVec1));
1323   std::shared_ptr<GeomAPI_XYZ> aVec2 = thePoint2->xyz()->decreased(aLineLoc);
1324   // the second point is on the line
1325   if (aVec2->squareModulus() < aTolerance * aTolerance)
1326     return false;
1327   std::shared_ptr<GeomAPI_Dir> aDirP2L(new GeomAPI_Dir(aVec2));
1328
1329   return aLineDir->cross(aDirP1L)->dot(aLineDir->cross(aDirP2L)) > -aTolerance;
1330 }
1331
1332 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Circ>& theCircle,
1333                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint1,
1334                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint2)
1335 {
1336   static const double aTolerance = 1.e-7;
1337   std::shared_ptr<GeomAPI_Pnt> aCenter = theCircle->center();
1338   double aDistP1C = thePoint1->distance(aCenter);
1339   double aDistP2C = thePoint2->distance(aCenter);
1340   return (aDistP1C - theCircle->radius()) * (aDistP2C - theCircle->radius()) > -aTolerance;
1341 }
1342
1343 bool SketchPlugin_ThirdPointValidator::arePointsNotOnLine(
1344     const FeaturePtr& theMacroFeature,
1345     Events_InfoMessage& theError) const
1346 {
1347   static const std::string aErrorPointsOnLine(
1348       "Selected points are on the same line");
1349
1350   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1351   threePointsOfFeature(theMacroFeature, aPoints);
1352
1353   if (isPointsOnLine(aPoints[0], aPoints[1], aPoints[2])) {
1354     theError = aErrorPointsOnLine;
1355     return false;
1356   }
1357   return true;
1358 }
1359
1360 bool SketchPlugin_ThirdPointValidator::arePointsNotSeparated(
1361     const FeaturePtr& theMacroFeature,
1362     const std::list<std::string>& theArguments,
1363     Events_InfoMessage& theError) const
1364 {
1365   static const std::string aErrorPointsApart(
1366       "Selected entity is lying between first two points");
1367
1368   AttributeRefAttrPtr aThirdPointRef = theMacroFeature->refattr(theArguments.front());
1369   FeaturePtr aRefByThird;
1370   if (aThirdPointRef->isObject())
1371     aRefByThird = ModelAPI_Feature::feature(aThirdPointRef->object());
1372   if (!aRefByThird)
1373     return true;
1374
1375   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1376   threePointsOfFeature(theMacroFeature, aPoints);
1377
1378   std::shared_ptr<GeomAPI_Edge> aThirdShape =
1379       std::dynamic_pointer_cast<GeomAPI_Edge>(aRefByThird->lastResult()->shape());
1380   if (!aThirdShape)
1381     return true;
1382
1383   SketchPlugin_Sketch* aSketch =
1384       std::dynamic_pointer_cast<SketchPlugin_Feature>(theMacroFeature)->sketch();
1385   std::shared_ptr<GeomAPI_Pnt> aFirstPnt3D = aSketch->to3D(aPoints[0]->x(), aPoints[0]->y());
1386   std::shared_ptr<GeomAPI_Pnt> aSecondPnt3D = aSketch->to3D(aPoints[1]->x(), aPoints[1]->y());
1387
1388   bool isOk = true;
1389   if (aThirdShape->isLine())
1390     isOk = isOnSameSide(aThirdShape->line(), aFirstPnt3D, aSecondPnt3D);
1391   else if (aThirdShape->isCircle() || aThirdShape->isArc())
1392     isOk = isOnSameSide(aThirdShape->circle(), aFirstPnt3D, aSecondPnt3D);
1393
1394   if (!isOk)
1395     theError = aErrorPointsApart;
1396   return isOk;
1397 }
1398
1399 bool SketchPlugin_ArcEndPointValidator::isValid(
1400     const AttributePtr& theAttribute,
1401     const std::list<std::string>& theArguments,
1402     Events_InfoMessage& theError) const
1403 {
1404   FeaturePtr aFeature = ModelAPI_Feature::feature(theAttribute->owner());
1405   AttributeRefAttrPtr anEndPointRef = aFeature->refattr(theArguments.front());
1406
1407   if(!anEndPointRef.get()) {
1408     return true;
1409   }
1410
1411   ObjectPtr anObject = anEndPointRef->object();
1412   AttributePtr anAttr = anEndPointRef->attr();
1413   if(!anObject.get() && !anAttr.get()) {
1414     return true;
1415   }
1416
1417   if(anEndPointRef->attr().get()) {
1418     return false;
1419   }
1420
1421   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1422   if(aResult.get()) {
1423     GeomShapePtr aShape = aResult->shape();
1424     if(aShape.get() && aShape->isVertex()) {
1425       return false;
1426     }
1427   }
1428
1429   aFeature = ModelAPI_Feature::feature(anObject);
1430   if(aFeature.get()) {
1431     if(aFeature->getKind() == SketchPlugin_Point::ID()) {
1432       return false;
1433     }
1434   }
1435
1436   return true;
1437 }
1438
1439 static GeomShapePtr toInfiniteEdge(const GeomShapePtr theShape)
1440 {
1441   if(!theShape.get()) {
1442     return theShape;
1443   }
1444
1445   if(!theShape->isEdge()) {
1446     return theShape;
1447   }
1448
1449   std::shared_ptr<GeomAPI_Edge> anEdge(new GeomAPI_Edge(theShape));
1450
1451   if(!anEdge.get()) {
1452     return theShape;
1453   }
1454
1455   if(anEdge->isLine()) {
1456     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1457     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::line(aLine);
1458     return aShape;
1459   }
1460
1461   if(anEdge->isCircle() || anEdge->isArc()) {
1462     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1463     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::lineCircle(aCircle);
1464     return aShape;
1465   }
1466
1467   return theShape;
1468 }
1469
1470 bool SketchPlugin_ArcEndPointIntersectionValidator::isValid(
1471     const AttributePtr& theAttribute,
1472     const std::list<std::string>& theArguments,
1473     Events_InfoMessage& theError) const
1474 {
1475   std::shared_ptr<SketchPlugin_MacroArc> anArcFeature =
1476       std::dynamic_pointer_cast<SketchPlugin_MacroArc>(theAttribute->owner());
1477   AttributeRefAttrPtr anEndPointRef = anArcFeature->refattr(theArguments.front());
1478
1479   if(!anEndPointRef.get()) {
1480     return true;
1481   }
1482
1483   GeomShapePtr anArcShape = toInfiniteEdge(anArcFeature->getArcShape(false));
1484
1485   if(!anArcShape.get() || anArcShape->isNull()) {
1486     return true;
1487   }
1488
1489   ObjectPtr anObject = anEndPointRef->object();
1490   AttributePtr anAttr = anEndPointRef->attr();
1491   if(!anObject.get() && !anAttr.get()) {
1492     return true;
1493   }
1494
1495   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1496   if(aResult.get()) {
1497     GeomShapePtr aShape = aResult->shape();
1498     if (!aShape->isEdge())
1499       return true;
1500     aShape = toInfiniteEdge(aShape);
1501     if(aShape.get() && !aShape->isNull()) {
1502       if(anArcShape->isIntersect(aShape)) {
1503         return true;
1504       }
1505     }
1506   }
1507
1508   FeaturePtr aSelectedFeature = ModelAPI_Feature::feature(anObject);
1509   if(aSelectedFeature.get()) {
1510     std::list<ResultPtr> aResults = aSelectedFeature->results();
1511     for(std::list<ResultPtr>::const_iterator anIt = aResults.cbegin();
1512         anIt != aResults.cend();
1513         ++anIt)
1514     {
1515       GeomShapePtr aShape = (*anIt)->shape();
1516       if (!aShape->isEdge())
1517         return true;
1518       aShape = toInfiniteEdge(aShape);
1519       if(aShape.get() && !aShape->isNull()) {
1520         if(anArcShape->isIntersect(aShape)) {
1521           return true;
1522         }
1523       }
1524     }
1525   }
1526
1527   return false;
1528 }
1529
1530 bool SketchPlugin_HasNoConstraint::isValid(const AttributePtr& theAttribute,
1531                                            const std::list<std::string>& theArguments,
1532                                            Events_InfoMessage& theError) const
1533 {
1534   std::set<std::string> aFeatureKinds;
1535   for (std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1536        anArgIt != theArguments.end(); anArgIt++) {
1537     aFeatureKinds.insert(*anArgIt);
1538   }
1539
1540   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1541     theError = "The attribute with the %1 type is not processed";
1542     theError.arg(theAttribute->attributeType());
1543     return false;
1544   }
1545
1546   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
1547                                                                       (theAttribute);
1548   bool isObject = aRefAttr->isObject();
1549   if (!isObject) {
1550     theError = "It uses an empty object";
1551     return false;
1552   }
1553   ObjectPtr anObject = aRefAttr->object();
1554   FeaturePtr aFeature = ModelAPI_Feature::feature(anObject);
1555   if (!aFeature.get()) {
1556     theError = "The feature of the checked attribute is empty";
1557     return false;
1558   }
1559
1560   FeaturePtr aCurrentFeature = ModelAPI_Feature::feature(aRefAttr->owner());
1561
1562   std::set<AttributePtr> aRefsList = anObject->data()->refsToMe();
1563   std::set<AttributePtr>::const_iterator anIt = aRefsList.begin();
1564   for (; anIt != aRefsList.end(); anIt++) {
1565     FeaturePtr aRefFeature = ModelAPI_Feature::feature((*anIt)->owner());
1566     if (aRefFeature.get() && aCurrentFeature != aRefFeature &&
1567         aFeatureKinds.find(aRefFeature->getKind()) != aFeatureKinds.end())
1568       return false; // constraint is found, that means that the check is not valid
1569   }
1570   return true;
1571 }
1572
1573 bool SketchPlugin_ReplicationReferenceValidator::isValid(
1574     const AttributePtr& theAttribute,
1575     const std::list<std::string>& theArguments,
1576     Events_InfoMessage& theError) const
1577 {
1578   AttributeRefAttrPtr aRefAttr =
1579       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1580   if (!aRefAttr)
1581   {
1582     theError = "Incorrect attribute";
1583     return false;
1584   }
1585
1586   ObjectPtr anOwner;
1587   if (aRefAttr->isObject())
1588     anOwner = aRefAttr->object();
1589   else
1590   {
1591     AttributePtr anAttr = aRefAttr->attr();
1592     anOwner = anAttr->owner();
1593   }
1594   FeaturePtr anAttrOwnerFeature = ModelAPI_Feature::feature(anOwner);
1595   if (!anAttrOwnerFeature)
1596     return true;
1597   AttributeBooleanPtr aCopyAttr = anAttrOwnerFeature->boolean(SketchPlugin_SketchEntity::COPY_ID());
1598   if (!aCopyAttr || !aCopyAttr->value())
1599     return true; // feature is not a copy, thus valid
1600
1601   // check the copy feature is already referred by the "Multi" feature
1602   FeaturePtr aMultiFeature = ModelAPI_Feature::feature(theAttribute->owner());
1603   AttributeRefListPtr aRefList = aMultiFeature->reflist(theArguments.front());
1604   for (int i = 0; i < aRefList->size(); ++i)
1605   {
1606     FeaturePtr aRefOwner = ModelAPI_Feature::feature(aRefList->object(i));
1607     if (aRefOwner == anAttrOwnerFeature)
1608     {
1609       theError = "Attribute refers to the object generated by this feature";
1610       return false;
1611     }
1612   }
1613
1614   return true;
1615 }
1616
1617 bool SketchPlugin_SketchFeatureValidator::isValid(const AttributePtr& theAttribute,
1618                                                   const std::list<std::string>& theArguments,
1619                                                   Events_InfoMessage& theError) const
1620 {
1621   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1622     theError = "The attribute with the %1 type is not processed";
1623     theError.arg(theAttribute->attributeType());
1624     return false;
1625   }
1626
1627   // check the attribute refers to a sketch feature
1628   AttributeRefAttrPtr aRefAttr =
1629       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1630   bool isSketchFeature = aRefAttr->isObject();
1631   if (isSketchFeature) {
1632     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1633     isSketchFeature = aFeature.get() != NULL;
1634     if (isSketchFeature) {
1635       std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1636           std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
1637       isSketchFeature = aSketchFeature.get() != NULL;
1638     }
1639   }
1640
1641   if (isSketchFeature)
1642     return true;
1643
1644   theError = "The object selected is not a sketch feature";
1645   return false;
1646 }
1647
1648 bool SketchPlugin_MultiRotationAngleValidator::isValid(const AttributePtr& theAttribute,
1649                                                        const std::list<std::string>& theArguments,
1650                                                        Events_InfoMessage& theError) const
1651 {
1652   if (theAttribute->attributeType() != ModelAPI_AttributeDouble::typeId()) {
1653     theError = "The attribute with the %1 type is not processed";
1654     theError.arg(theAttribute->attributeType());
1655     return false;
1656   }
1657
1658   AttributeDoublePtr anAngleAttr =
1659     std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(theAttribute);
1660
1661   FeaturePtr aMultiRotation = ModelAPI_Feature::feature(theAttribute->owner());
1662   AttributeStringPtr anAngleType =
1663       aMultiRotation->string(SketchPlugin_MultiRotation::ANGLE_TYPE());
1664   AttributeIntegerPtr aNbCopies =
1665       aMultiRotation->integer(SketchPlugin_MultiRotation::NUMBER_OF_OBJECTS_ID());
1666
1667   if (anAngleType->value() != "FullAngle")
1668   {
1669     double aFullAngleValue = anAngleAttr->value() * (aNbCopies->value() - 1);
1670     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 359.9999999)
1671     {
1672       theError = "Rotation single angle should produce full angle less than 360 degree";
1673       return false;
1674     }
1675   }
1676   else
1677   {
1678     double aFullAngleValue = anAngleAttr->value();
1679     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 360.0000001)
1680     {
1681       theError = "Rotation full angle should be in range [0, 360]";
1682       return false;
1683     }
1684   }
1685
1686   return true;
1687 }