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