src/SketchPlugin/SketchPlugin_Validators.cpp

   1 // Copyright (C) 2014-2019  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
  18 //
  19
  20 #include "SketchPlugin_Validators.h"
  21
  22 #include "SketchPlugin_Arc.h"
  23 #include "SketchPlugin_BSpline.h"
  24 #include "SketchPlugin_BSplinePeriodic.h"
  25 #include "SketchPlugin_Circle.h"
  26 #include "SketchPlugin_ConstraintCoincidence.h"
  27 #include "SketchPlugin_ConstraintCoincidenceInternal.h"
  28 #include "SketchPlugin_ConstraintDistance.h"
  29 #include "SketchPlugin_ConstraintRigid.h"
  30 #include "SketchPlugin_ConstraintTangent.h"
  31 #include "SketchPlugin_Ellipse.h"
  32 #include "SketchPlugin_EllipticArc.h"
  33 #include "SketchPlugin_Fillet.h"
  34 #include "SketchPlugin_CurveFitting.h"
  35 #include "SketchPlugin_Line.h"
  36 #include "SketchPlugin_MacroArc.h"
  37 #include "SketchPlugin_MacroCircle.h"
  38 #include "SketchPlugin_MultiRotation.h"
  39 #include "SketchPlugin_Offset.h"
  40 #include "SketchPlugin_Point.h"
  41 #include "SketchPlugin_Sketch.h"
  42 #include "SketchPlugin_Trim.h"
  43 #include "SketchPlugin_Tools.h"
  44
  45 #include "SketcherPrs_Tools.h"
  46
  47 #include <Events_InfoMessage.h>
  48
  49 #include <Locale_Convert.h>
  50
  51 #include <ModelAPI_Data.h>
  52 #include <ModelAPI_Validator.h>
  53 #include <ModelAPI_AttributeDouble.h>
  54 #include <ModelAPI_AttributeInteger.h>
  55 #include <ModelAPI_AttributeRefAttr.h>
  56 #include <ModelAPI_AttributeRefAttrList.h>
  57 #include <ModelAPI_AttributeRefList.h>
  58 #include <ModelAPI_AttributeSelectionList.h>
  59 #include <ModelAPI_AttributeString.h>
  60 #include <ModelAPI_Session.h>
  61 #include <ModelAPI_Tools.h>
  62 #include <ModelAPI_ResultConstruction.h>
  63
  64 #include <ModelGeomAlgo_Point2D.h>
  65 #include <ModelGeomAlgo_Shape.h>
  66
  67 #include <GeomAlgoAPI_EdgeBuilder.h>
  68 #include <GeomAlgoAPI_ShapeTools.h>
  69
  70 #include <GeomAPI_Circ.h>
  71 #include <GeomAPI_Dir2d.h>
  72 #include <GeomAPI_Ellipse.h>
  73 #include <GeomAPI_Lin.h>
  74 #include <GeomAPI_Edge.h>
  75 #include <GeomAPI_Vertex.h>
  76
  77 #include <GeomDataAPI_Point2D.h>
  78 #include <GeomDataAPI_Point2DArray.h>
  79
  80 #include <algorithm>
  81 #include <cmath>
  82
  83 const double tolerance = 1.e-7;
  84
  85 static bool isSpline(FeaturePtr theFeature)
  86 {
  87   return theFeature && (theFeature->getKind() == SketchPlugin_BSpline::ID() ||
  88                         theFeature->getKind() == SketchPlugin_BSplinePeriodic::ID());
  89 }
  90
  91
  92 bool SketchPlugin_DistanceAttrValidator::isValid(const AttributePtr& theAttribute,
  93                                                  const std::list<std::string>& theArguments,
  94                                                  Events_InfoMessage& theError) const
  95 {
  96   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
  97     theError = "The attribute with the %1 type is not processed";
  98     theError.arg(theAttribute->attributeType());
  99     return false;
 100   }
 101
 102   // there is a check whether the feature contains a point and a linear edge or two point values
 103   std::string aParamA = theArguments.front();
 104   SessionPtr aMgr = ModelAPI_Session::get();
 105   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 106
 107   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
 108                                                                       (theAttribute);
 109   bool isObject = aRefAttr->isObject();
 110   if (!isObject) {
 111     // an attribute is a point. A point value is valid always for the distance
 112     return true;
 113   } else {
 114     // 1. check whether the references object is a linear
 115     ObjectPtr anObject = aRefAttr->object();
 116
 117     const ModelAPI_AttributeValidator* aShapeValidator =
 118       dynamic_cast<const ModelAPI_AttributeValidator*>(
 119       aFactory->validator("GeomValidators_ShapeType"));
 120     std::list<std::string> anArguments;
 121     anArguments.push_back("circle");
 122     Events_InfoMessage aCircleError;
 123     bool aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aCircleError);
 124     // the circle line is not a valid case
 125     if (aShapeValid) {
 126       theError = "Circle can not be used in distance constraint";
 127       return false;
 128     }
 129
 130     anArguments.clear();
 131     anArguments.push_back("line");
 132     Events_InfoMessage aLineError;
 133     aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aLineError);
 134     // if the attribute value is not a line, that means it is a vertex. A vertex is always valid
 135     if (aShapeValid) {
 136       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 137       // If it is a line then we have to check that first attribute id not a line
 138       std::shared_ptr<SketchPlugin_Feature> aSFeature =
 139         std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 140       SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 141       std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(aSketch);
 142       std::shared_ptr<GeomDataAPI_Point2D> aPoint = SketcherPrs_Tools::getFeaturePoint(
 143         aFeature->data(), aParamA, aPlane);
 144       if (!aPoint.get()) {
 145         theError = "One of parameters of distance constraint should be a point";
 146         return false;
 147       }
 148     }
 149   }
 150   return true;
 151 }
 152
 153 bool SketchPlugin_TangentAttrValidator::isValid(const AttributePtr& theAttribute,
 154                                                 const std::list<std::string>& theArguments,
 155                                                 Events_InfoMessage& theError) const
 156 {
 157   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 158     theError = "The attribute with the %1 type is not processed";
 159     theError.arg(theAttribute->attributeType());
 160     return false;
 161   }
 162
 163   // there is a check whether the feature contains a point and a linear edge or two point values
 164   std::string aParamA = theArguments.front();
 165   SessionPtr aMgr = ModelAPI_Session::get();
 166   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 167
 168   FeaturePtr anAttributeFeature =
 169     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 170   AttributeRefAttrPtr aRefAttr =
 171     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 172
 173   bool isObject = aRefAttr->isObject();
 174   ObjectPtr anObject = aRefAttr->object();
 175   if (!isObject || !anObject.get()) {
 176     theError = "It uses an empty object";
 177     return false;
 178   }
 179
 180   FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
 181
 182   AttributeRefAttrPtr aOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 183   ObjectPtr aOtherObject = aOtherAttr->object();
 184   FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
 185   if (!aOtherFea)
 186     return true;
 187
 188   if (aRefFea->getKind() == SketchPlugin_Line::ID() &&
 189       aOtherFea->getKind() == SketchPlugin_Line::ID()) {
 190     theError = "Two segments cannot be tangent";
 191     return false;
 192   }
 193   else if (isSpline(aRefFea) && isSpline(aOtherFea)) {
 194     theError = "Two B-splines cannot be tangent";
 195     return false;
 196   }
 197
 198   bool isValid = true;
 199   bool hasSpline = isSpline(aRefFea);
 200   if (!hasSpline && isSpline(aOtherFea)) {
 201     hasSpline = true;
 202     std::swap(aRefFea, aOtherFea);
 203   }
 204   if (hasSpline) {
 205     auto isApplicableCoincidence = [](FeaturePtr theFeature, const std::string& theAttrName) {
 206       AttributeRefAttrPtr aRefAttr = theFeature->refattr(theAttrName);
 207       if (aRefAttr->isObject())
 208         return false;
 209       AttributePtr anAttr = aRefAttr->attr();
 210       FeaturePtr anOwner = ModelAPI_Feature::feature(anAttr->owner());
 211       AttributePoint2DPtr aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr);
 212       if (aPointAttr) {
 213         return anOwner->getKind() == SketchPlugin_BSpline::ID() &&
 214               (aPointAttr->id() == SketchPlugin_BSpline::START_ID() ||
 215                aPointAttr->id() == SketchPlugin_BSpline::END_ID());
 216       }
 217
 218       AttributePoint2DArrayPtr aPntArray =
 219           std::dynamic_pointer_cast<GeomDataAPI_Point2DArray>(anAttr);
 220       if (aPntArray && anOwner->getKind() == SketchPlugin_BSpline::ID()) {
 221         // check index of the pole
 222         AttributeIntegerPtr anIndex = theAttrName == SketchPlugin_Constraint::ENTITY_A() ?
 223             theFeature->integer(SketchPlugin_ConstraintCoincidenceInternal::INDEX_ENTITY_A()) :
 224             theFeature->integer(SketchPlugin_ConstraintCoincidenceInternal::INDEX_ENTITY_B());
 225         return anIndex && (anIndex->value() == 0 || anIndex->value() == aPntArray->size() - 1);
 226       }
 227       return false;
 228     };
 229
 230     isValid = false;
 231     AttributePoint2DArrayPtr aBSplinePoles = std::dynamic_pointer_cast<GeomDataAPI_Point2DArray>(
 232         aRefFea->attribute(SketchPlugin_BSplineBase::POLES_ID()));
 233     // additional check the B-spline edge and the other edge have a coincident boundary point
 234     std::set<FeaturePtr> aCoincidences = SketchPlugin_Tools::findCoincidentConstraints(aRefFea);
 235     for (std::set<FeaturePtr>::iterator anIt = aCoincidences.begin();
 236          anIt != aCoincidences.end() && !isValid; ++anIt) {
 237       std::set<FeaturePtr> aCoinc;
 238       if (isApplicableCoincidence(*anIt, SketchPlugin_Constraint::ENTITY_A()))
 239         SketchPlugin_Tools::findCoincidences(*anIt, SketchPlugin_Constraint::ENTITY_B(),
 240                                              aCoinc, true);
 241       else if (isApplicableCoincidence(*anIt, SketchPlugin_Constraint::ENTITY_B()))
 242         SketchPlugin_Tools::findCoincidences(*anIt, SketchPlugin_Constraint::ENTITY_A(),
 243                                              aCoinc, true);
 244
 245       isValid = aCoinc.find(aOtherFea) != aCoinc.end();
 246     }
 247   }
 248
 249   return isValid;
 250 }
 251
 252 bool SketchPlugin_PerpendicularAttrValidator::isValid(const AttributePtr& theAttribute,
 253                                                       const std::list<std::string>& theArguments,
 254                                                       Events_InfoMessage& theError) const
 255 {
 256   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 257     theError = "The attribute with the %1 type is not processed";
 258     theError.arg(theAttribute->attributeType());
 259     return false;
 260   }
 261
 262   std::string aParamA = theArguments.front();
 263   SessionPtr aMgr = ModelAPI_Session::get();
 264   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 265
 266   FeaturePtr anOwner = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 267   AttributeRefAttrPtr aRefAttr =
 268       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 269
 270   bool isObject = aRefAttr->isObject();
 271   ObjectPtr anObject = aRefAttr->object();
 272   if (isObject && anObject.get()) {
 273     FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
 274
 275     AttributeRefAttrPtr aOtherAttr = anOwner->refattr(aParamA);
 276     ObjectPtr aOtherObject = aOtherAttr->object();
 277     FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
 278
 279     // at least one feature should be a line
 280     if (aRefFea->getKind() != SketchPlugin_Line::ID() &&
 281         aOtherFea && aOtherFea->getKind() != SketchPlugin_Line::ID()) {
 282       theError = "At least one feature should be a line";
 283       return false;
 284     }
 285     else if (isSpline(aRefFea) || isSpline(aOtherFea)) {
 286       theError = "B-spline is not supported";
 287       return false;
 288     }
 289   }
 290   else {
 291     theError = "It uses an empty object";
 292     return false;
 293   }
 294
 295   return true;
 296 }
 297
 298 bool SketchPlugin_NotFixedValidator::isValid(const AttributePtr& theAttribute,
 299                                              const std::list<std::string>& theArguments,
 300                                              Events_InfoMessage& theError) const
 301 {
 302   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 303     theError = "The attribute with the %1 type is not processed";
 304     theError.arg(theAttribute->attributeType());
 305     return false;
 306   }
 307
 308   std::shared_ptr<SketchPlugin_Feature> aFeature =
 309       std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 310   if (!aFeature)
 311     return true;
 312
 313   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 314
 315   SketchPlugin_Sketch* aSketch = aFeature->sketch();
 316   int aNbFeatures = aSketch->numberOfSubs();
 317   for (int anInd = 0; anInd < aNbFeatures; anInd++) {
 318     FeaturePtr aSubFeature = aSketch->subFeature(anInd);
 319     if (aSubFeature->getKind() != SketchPlugin_ConstraintRigid::ID() || aSubFeature == aFeature)
 320       continue;
 321     AttributeRefAttrPtr aRAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 322         aSubFeature->attribute(SketchPlugin_ConstraintRigid::ENTITY_A()));
 323     if (aRefAttr->isObject()) {
 324       if (aRefAttr->object() == aRAttr->object()) {
 325         ObjectPtr anObject = aRefAttr->object();
 326         std::wstring aName = anObject.get() ? anObject->data()->name() : L"";
 327         theError = "The object %1 has been already fixed.";
 328         theError.arg(aName);
 329         return false;
 330       }
 331     }
 332     else if (aRefAttr->attr() == aRAttr->attr()) {
 333       AttributePtr anAttribute = aRefAttr->attr();
 334       std::wstring aName =
 335           anAttribute.get() ? Locale::Convert::toWString(anAttribute->id()) : L"";
 336       theError = "The attribute %1 has been already fixed.";
 337       theError.arg(aName);
 338       return false;
 339     }
 340   }
 341   return true;
 342 }
 343
 344 bool SketchPlugin_EqualAttrValidator::isValid(const AttributePtr& theAttribute,
 345                                               const std::list<std::string>& theArguments,
 346                                               Events_InfoMessage& theError) const
 347 {
 348   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 349     theError = "The attribute with the %1 type is not processed";
 350     theError.arg(theAttribute->attributeType());
 351     return false;
 352   }
 353
 354   std::string aParamA = theArguments.front();
 355   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 356   AttributeRefAttrPtr aRefAttr[2];
 357   aRefAttr[0] = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 358   aRefAttr[1] = aFeature->data()->refattr(aParamA);
 359
 360   if (!aRefAttr[0]->isObject() || !aRefAttr[1]->isObject()) {
 361     theError = "Attributes can not be used in equal constraint";
 362     return false;
 363   }
 364
 365   std::string aType[2];
 366   std::list<std::string> anArguments;
 367   for (int i = 0; i < 2; i++) {
 368     aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 369     if (!aFeature.get())
 370       return true;
 371
 372     aType[i] = aFeature->getKind();
 373     if (aFeature->getKind() != SketchPlugin_Line::ID() &&
 374         aFeature->getKind() != SketchPlugin_Circle::ID() &&
 375         aFeature->getKind() != SketchPlugin_Arc::ID() &&
 376         aFeature->getKind() != SketchPlugin_Ellipse::ID() &&
 377         aFeature->getKind() != SketchPlugin_EllipticArc::ID()) {
 378       theError = "The %1 feature is not supported by the Equal constraint.";
 379       theError.arg(aFeature->getKind());
 380       // wrong type of attribute
 381       return false;
 382     }
 383   }
 384
 385   bool isOk = aType[0] == aType[1];
 386   if (!isOk) {
 387     // circle and arc may be equal
 388     isOk = (aType[0] == SketchPlugin_Arc::ID() && aType[1] == SketchPlugin_Circle::ID())
 389         || (aType[0] == SketchPlugin_Circle::ID() && aType[1] == SketchPlugin_Arc::ID());
 390   }
 391   if (!isOk) {
 392     // ellipse and elliptic arc may be equal
 393     isOk = (aType[0] == SketchPlugin_EllipticArc::ID() && aType[1] == SketchPlugin_Ellipse::ID())
 394         || (aType[0] == SketchPlugin_Ellipse::ID() && aType[1] == SketchPlugin_EllipticArc::ID());
 395   }
 396   if (!isOk) {
 397     theError = "Features with kinds %1 and %2 can not be equal.";
 398     theError.arg(aType[0]).arg(aType[1]);
 399     return false;
 400   }
 401   return true;
 402 }
 403
 404 bool SketchPlugin_MirrorAttrValidator::isValid(const AttributePtr& theAttribute,
 405                                                const std::list<std::string>& theArguments,
 406                                                Events_InfoMessage& theError) const
 407 {
 408   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 409     theError = "The attribute with the %1 type is not processed";
 410     theError.arg(theAttribute->attributeType());
 411     return false;
 412   }
 413
 414   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 415   AttributeRefListPtr aSelAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 416
 417   AttributeRefListPtr aRefListOfMirrored = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 418       aFeature->attribute(SketchPlugin_Constraint::ENTITY_C()));
 419   std::list<ObjectPtr> aMirroredObjects = aRefListOfMirrored->list();
 420
 421   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 422     ObjectPtr aSelObject = aSelAttr->object(anInd);
 423
 424     // B-splines are not supported in Mirror yet
 425     FeaturePtr aSelFeature = ModelAPI_Feature::feature(aSelObject);
 426     if (aSelFeature && (aSelFeature->getKind() == SketchPlugin_BSpline::ID() ||
 427         aSelFeature->getKind() == SketchPlugin_BSplinePeriodic::ID())) {
 428       theError = "Not supported";
 429       return false;
 430     }
 431
 432     std::wstring aName = aSelObject.get() ? aSelObject->data()->name() : L"";
 433     std::list<ObjectPtr>::iterator aMirIter = aMirroredObjects.begin();
 434     for (; aMirIter != aMirroredObjects.end(); aMirIter++)
 435       if (aSelObject == *aMirIter) {
 436         theError = "The object %1 is a result of mirror";
 437         theError.arg(aName);
 438         return false;
 439       }
 440   }
 441   return true;
 442 }
 443
 444 bool SketchPlugin_CoincidenceAttrValidator::isValid(const AttributePtr& theAttribute,
 445                                                     const std::list<std::string>& theArguments,
 446                                                     Events_InfoMessage& theError) const
 447 {
 448   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 449     theError = "The attribute with the %1 type is not processed";
 450     theError.arg(theAttribute->attributeType());
 451     return false;
 452   }
 453
 454   // there is a check whether the feature contains a point and a linear edge or two point values
 455   std::string aParamA = theArguments.front();
 456   SessionPtr aMgr = ModelAPI_Session::get();
 457   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 458
 459   FeaturePtr aConstraint = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 460   AttributeRefAttrPtr aRefAttrA = aConstraint->data()->refattr(aParamA);
 461   if (!aRefAttrA) {
 462     theError = "The %1 attribute should be %2";
 463     theError.arg(aParamA).arg(ModelAPI_AttributeRefAttr::typeId());
 464     return false;
 465   }
 466
 467   AttributeRefAttrPtr aRefAttrB =
 468     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 469
 470   // first attribute is a point, it may coincide with any object
 471   if (!aRefAttrA->isObject())
 472     return true;
 473   else {
 474     ObjectPtr anObject = aRefAttrA->object();
 475     if (!anObject.get()) {
 476       theError = "%1 attribute has an empty object";
 477       theError.arg(aParamA);
 478       return false;
 479     }
 480     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrA->object());
 481     if (!aFeature.get()) {
 482       theError = "%1 attribute has an empty feature";
 483       theError.arg(aParamA);
 484       return false;
 485     }
 486
 487     if (aFeature->getKind() == SketchPlugin_Point::ID())
 488       return true;
 489   }
 490
 491   // second attribute is a point, it may coincide with any object
 492   if (!aRefAttrB->isObject())
 493     return true;
 494   else {
 495     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrB->object());
 496     if (!aFeature) {
 497       theError = "%1 attribute has an empty object";
 498       theError.arg(theAttribute->id());
 499       return false;
 500     }
 501     if (aFeature->getKind() == SketchPlugin_Point::ID())
 502       return true;
 503   }
 504   theError = "There is no an attribute filled by a point";
 505   return false;
 506 }
 507
 508
 509 bool SketchPlugin_CopyValidator::isValid(const AttributePtr& theAttribute,
 510                                          const std::list<std::string>& theArguments,
 511                                          Events_InfoMessage& theError) const
 512 {
 513   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 514     theError = "The attribute with the %1 type is not processed";
 515     theError.arg(theAttribute->attributeType());
 516     return false;
 517   }
 518
 519   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 520   AttributeRefListPtr aSelAttr =
 521     std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 522   std::set<ObjectPtr> aSelected;
 523
 524   AttributeRefListPtr aRefListOfInitial = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 525       aFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
 526   AttributeRefListPtr aRefListOfCopied = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 527       aFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
 528   std::list<ObjectPtr> anInitialObjects = aRefListOfInitial->list();
 529   std::list<ObjectPtr> aCopiedObjects = aRefListOfCopied->list();
 530
 531   std::list<ObjectPtr>::iterator anObjIter;
 532   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 533     ObjectPtr aSelObject = aSelAttr->object(anInd);
 534     if (aSelected.find(aSelObject) != aSelected.end()) {
 535       theError = "Error: An object selected twice";
 536       return false;
 537     }
 538     aSelected.insert(aSelObject);
 539
 540     anObjIter = anInitialObjects.begin();
 541     for (; anObjIter != anInitialObjects.end(); anObjIter++)
 542       if (aSelObject == *anObjIter)
 543         break;
 544     if (anObjIter != anInitialObjects.end())
 545       continue;
 546
 547     // B-splines are not supported in Copying features
 548     FeaturePtr aSelFeature = ModelAPI_Feature::feature(aSelObject);
 549     if (aFeature->getKind() != SketchPlugin_Offset::ID() &&
 550         aSelFeature && (aSelFeature->getKind() == SketchPlugin_BSpline::ID() ||
 551         aSelFeature->getKind() == SketchPlugin_BSplinePeriodic::ID())) {
 552       theError = "Not supported";
 553       return false;
 554     }
 555
 556     anObjIter = aCopiedObjects.begin();
 557     for (; anObjIter != aCopiedObjects.end(); anObjIter++) {
 558       bool isFound = aSelObject == *anObjIter;
 559       if (!isFound) {
 560         // check in the results of the feature
 561         FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 562         if (aFeature) {
 563           const std::list<ResultPtr>& aResults = aFeature->results();
 564           for (std::list<ResultPtr>::const_iterator aResIt = aResults.begin();
 565             aResIt != aResults.end() && !isFound; ++aResIt) {
 566             isFound = aSelObject == *aResIt;
 567           }
 568         }
 569       }
 570       if (isFound) {
 571         std::wstring aName = aSelObject.get() ? aSelObject->data()->name() : L"";
 572         theError = "The object %1 is a result of copy";
 573         theError.arg(aName);
 574         return false;
 575       }
 576     }
 577   }
 578   return true;
 579 }
 580
 581 bool SketchPlugin_SolverErrorValidator::isValid(
 582   const std::shared_ptr<ModelAPI_Feature>& theFeature,
 583   const std::list<std::string>& theArguments,
 584   Events_InfoMessage& theError) const
 585 {
 586   AttributeStringPtr aAttributeString = theFeature->string(SketchPlugin_Sketch::SOLVER_ERROR());
 587
 588   if (!aAttributeString->value().empty()) {
 589     theError = aAttributeString->value();
 590     return false;
 591   }
 592
 593   return true;
 594 }
 595
 596 bool SketchPlugin_SolverErrorValidator::isNotObligatory(std::string theFeature,
 597                                                         std::string theAttribute)
 598 {
 599   return true;
 600 }
 601
 602 static bool hasSameTangentFeature(const std::set<AttributePtr>& theRefsList,
 603                                   const FeaturePtr theFeature)
 604 {
 605   for(std::set<AttributePtr>::const_iterator
 606       anIt = theRefsList.cbegin(); anIt != theRefsList.cend(); ++anIt) {
 607     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 608     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 609     if (!aFeature)
 610       continue;
 611     if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 612       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 613         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
 614       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 615         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
 616       if(anAttrRefA.get()) {
 617         ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
 618         if(aResA.get()) {
 619           DocumentPtr aDoc = aResA->document();
 620           if(aDoc.get()) {
 621             FeaturePtr aFeatureA = aDoc->feature(aResA);
 622             if(aFeatureA.get() && aFeatureA == theFeature) {
 623               return true;
 624             }
 625           }
 626         }
 627       }
 628       if(anAttrRefB.get()) {
 629         ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
 630         if(aResB.get()) {
 631           DocumentPtr aDoc = aResB->document();
 632           if(aDoc.get()) {
 633             FeaturePtr aFeatureB = aDoc->feature(aResB);
 634             if(aFeatureB.get() && aFeatureB == theFeature) {
 635               return true;
 636             }
 637           }
 638         }
 639       }
 640     }
 641   }
 642   return false;
 643 }
 644
 645 static bool isPointPointCoincidence(const FeaturePtr& theCoincidence)
 646 {
 647   AttributeRefAttrPtr aRefAttr[2] = {
 648       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_A()),
 649       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_B())
 650   };
 651
 652   bool arePoints = true;
 653   for (int i = 0; i < 2 && arePoints; ++i) {
 654     if (aRefAttr[i]->isObject()) {
 655       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 656       arePoints = aFeature.get() && aFeature->getKind() == SketchPlugin_Point::ID();
 657     } else
 658       arePoints = aRefAttr[i]->attr().get() != NULL;
 659   }
 660   return arePoints;
 661 }
 662
 663 bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
 664                                                  const std::list<std::string>& theArguments,
 665                                                  Events_InfoMessage& theError) const
 666 {
 667   AttributeRefAttrPtr aPointRefAttr =
 668     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 669   if(!aPointRefAttr.get()) {
 670     theError = "Error: Point not selected.";
 671     return false;
 672   }
 673
 674   AttributePtr aPointAttribute = aPointRefAttr->attr();
 675   if (!aPointAttribute.get()) {
 676     theError = "Error: Bad point selected.";
 677     return false;
 678   }
 679   std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt =
 680     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
 681
 682   // Obtain constraint coincidence for the fillet point.
 683   const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
 684   FeaturePtr aConstraintCoincidence;
 685   for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin();
 686       anIt != aRefsList.cend(); ++anIt) {
 687     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 688     FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 689     if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 690       if (!isPointPointCoincidence(aConstrFeature))
 691         continue;
 692
 693       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 694         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 695       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 696         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 697
 698       AttributePtr anAttrA = anAttrRefA->attr();
 699       if(aPointAttribute == anAttrA) {
 700         aConstraintCoincidence = aConstrFeature;
 701         break;
 702       }
 703
 704       AttributePtr anAttrB = anAttrRefB->attr();
 705       if(aPointAttribute == anAttrB) {
 706         aConstraintCoincidence = aConstrFeature;
 707         break;
 708       }
 709     }
 710   }
 711
 712   if(!aConstraintCoincidence.get()) {
 713     theError = "Error: one of the selected point does not have coincidence.";
 714     return false;
 715   }
 716
 717   // Get coincides from constraint.
 718   std::set<FeaturePtr> aCoinsides;
 719   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 720                                         SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 721                                         aCoinsides,
 722                                         true);
 723   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 724                                         SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 725                                         aCoinsides,
 726                                         true);
 727
 728   // Remove points and external lines from set of coincides.
 729   std::set<FeaturePtr> aNewSetOfCoincides;
 730   for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 731       anIt != aCoinsides.end(); ++anIt) {
 732     std::shared_ptr<SketchPlugin_SketchEntity> aSketchEntity =
 733       std::dynamic_pointer_cast<SketchPlugin_SketchEntity>(*anIt);
 734     if(aSketchEntity.get() && (aSketchEntity->isCopy() || aSketchEntity->isExternal())) {
 735       continue;
 736     }
 737     if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
 738         (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
 739           continue;
 740     }
 741     if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
 742       AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 743       std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt =
 744         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
 745       double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
 746       if(aDistSelectedArcCenter < tolerance) {
 747         continue;
 748       }
 749     }
 750     aNewSetOfCoincides.insert(*anIt);
 751   }
 752   aCoinsides = aNewSetOfCoincides;
 753
 754   // If we still have more than two coincides remove auxilary entities from set of coincides.
 755   if(aCoinsides.size() > 2) {
 756     aNewSetOfCoincides.clear();
 757     for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 758         anIt != aCoinsides.end(); ++anIt) {
 759       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 760         aNewSetOfCoincides.insert(*anIt);
 761       }
 762     }
 763     aCoinsides = aNewSetOfCoincides;
 764   }
 765
 766   if(aCoinsides.size() != 2) {
 767     theError = "Error: One of the selected points does not have two suitable edges for fillet.";
 768     return false;
 769   }
 770
 771   // Check that selected edges don't have tangent constraint.
 772   std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 773   FeaturePtr aFirstFeature = *anIt++;
 774   FeaturePtr aSecondFeature = *anIt;
 775   const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
 776   if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
 777     theError = "Error: Edges in selected point has tangent constraint.";
 778     return false;
 779   }
 780
 781   std::list<ResultPtr> aFirstResults = aFirstFeature->results();
 782   for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin();
 783       aResIt != aFirstResults.end(); ++aResIt) {
 784     ResultPtr aRes = *aResIt;
 785     const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
 786     if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
 787       theError = "Error: Edges in selected point has tangent constraint.";
 788       return false;
 789     }
 790   }
 791
 792   // Check the features are not tangent
 793   std::shared_ptr<GeomAPI_Shape> aFirstShape = aFirstFeature->lastResult()->shape();
 794   std::shared_ptr<GeomAPI_Shape> aSecondShape = aSecondFeature->lastResult()->shape();
 795   if (!aFirstShape || !aFirstShape->isEdge() ||
 796       !aSecondShape || !aSecondShape->isEdge()) {
 797     theError = "Error: At least on of the features is not an edge";
 798     return false;
 799   }
 800
 801   std::shared_ptr<GeomAPI_Edge> anEdge1 = std::dynamic_pointer_cast<GeomAPI_Edge>(aFirstShape);
 802   std::shared_ptr<GeomAPI_Edge> anEdge2 = std::dynamic_pointer_cast<GeomAPI_Edge>(aSecondShape);
 803
 804   static const double TOL = 1.e-7;
 805   if (anEdge1->isLine() && anEdge2->isLine()) {
 806     // Check that lines not collinear
 807     std::shared_ptr<GeomAPI_Dir> aDir1 = anEdge1->line()->direction();
 808     std::shared_ptr<GeomAPI_Dir> aDir2 = anEdge2->line()->direction();
 809     double aCross = aDir1->cross(aDir2)->squareModulus();
 810     if (aCross < TOL * TOL)
 811       return false;
 812   } else if (anEdge1->isArc() && anEdge2->isArc()) {
 813     // check the circles are not tangent
 814     std::shared_ptr<GeomAPI_Circ> aCirc1 = anEdge1->circle();
 815     std::shared_ptr<GeomAPI_Circ> aCirc2 = anEdge2->circle();
 816     double aDistCC = aCirc1->center()->distance(aCirc2->center());
 817     double aRadSum = aCirc1->radius() + aCirc2->radius();
 818     double aRadDiff = fabs(aCirc1->radius() - aCirc2->radius());
 819     if (fabs(aDistCC - aRadSum) < TOL || fabs(aDistCC - aRadDiff) < TOL)
 820       return false;
 821   } else {
 822     // check whether line and arc are tangent
 823     std::shared_ptr<GeomAPI_Circ> aCirc;
 824     std::shared_ptr<GeomAPI_Lin> aLine;
 825     if (anEdge1->isLine()) {
 826       aLine = anEdge1->line();
 827       aCirc = anEdge2->circle();
 828     } else {
 829       aCirc = anEdge1->circle();
 830       aLine = anEdge2->line();
 831     }
 832
 833     double aDistCL = aLine->distance(aCirc->center());
 834     if (fabs(aDistCL - aCirc->radius()) < TOL)
 835       return false;
 836   }
 837
 838   return true;
 839 }
 840
 841 bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
 842                                                     const std::list<std::string>& theArguments,
 843                                                     Events_InfoMessage& theError) const
 844 {
 845   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 846     theError = "The attribute with the %1 type is not processed";
 847     theError.arg(theAttribute->attributeType());
 848     return false;
 849   }
 850
 851   // there is a check whether the feature contains a point and a linear edge or two point values
 852   std::string aParamA = theArguments.front();
 853   SessionPtr aMgr = ModelAPI_Session::get();
 854   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 855
 856   FeaturePtr anAttributeFeature =
 857     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 858   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 859   AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 860
 861   AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
 862   int aNbPoints = 0;
 863   int aNbLines = 0;
 864   for (int i = 0; i < 2; ++i) {
 865     if (!aRefAttrs[i]->isObject())
 866       ++aNbPoints;
 867     else {
 868       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
 869       if (!aFeature) {
 870         if (aNbPoints + aNbLines != 0)
 871           return true;
 872         else continue;
 873       }
 874
 875       if (aFeature->getKind() == SketchPlugin_Point::ID())
 876         ++aNbPoints;
 877       else if (aFeature->getKind() == SketchPlugin_Line::ID() ||
 878                aFeature->getKind() == SketchPlugin_Arc::ID() ||
 879                aFeature->getKind() == SketchPlugin_EllipticArc::ID())
 880         ++aNbLines;
 881     }
 882   }
 883
 884   if (aNbPoints != 1 || aNbLines != 1) {
 885     theError = "Middle point constraint allows points and lines only";
 886     return false;
 887   }
 888   return true;
 889 }
 890
 891 bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
 892                                                     const std::list<std::string>& /*theArguments*/,
 893                                                     Events_InfoMessage& theError) const
 894 {
 895   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 896     theError = "The attribute with the %1 type is not processed";
 897     theError.arg(theAttribute->attributeType());
 898     return false;
 899   }
 900   FeaturePtr anOwner = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 901   AttributeStringPtr anArcTypeAttr = anOwner->string(SketchPlugin_MacroArc::ARC_TYPE());
 902   if (anArcTypeAttr && anArcTypeAttr->value() != SketchPlugin_MacroArc::ARC_TYPE_BY_TANGENT_EDGE())
 903     return true; // not applicable for non-tangent arcs
 904
 905   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 906   AttributePtr anAttr = aRefAttr->attr();
 907   if (!anAttr) {
 908     theError = "The attribute %1 should be a point";
 909     theError.arg(theAttribute->id());
 910     return false;
 911   }
 912
 913   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 914   const std::string& aFeatureType = anAttrFeature->getKind();
 915   if (aFeatureType == SketchPlugin_Arc::ID()) {
 916     // selected point should not be a center of arc
 917     const std::string& aPntId = anAttr->id();
 918     if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
 919       theError = "The attribute %1 is not supported";
 920       theError.arg(aPntId);
 921       return false;
 922     }
 923   }
 924   else if (aFeatureType == SketchPlugin_Line::ID()) {
 925     // selected point should be bound point of line
 926     const std::string& aPntId = anAttr->id();
 927     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 928       theError = "The attribute %1 is not supported";
 929       theError.arg(aPntId);
 930       return false;
 931     }
 932   }
 933   else {
 934     theError = "Unable to build tangent arc on %1";
 935     theError.arg(anAttrFeature->getKind());
 936     return false;
 937   }
 938
 939   return true;
 940 }
 941
 942 bool SketchPlugin_ArcTransversalPointValidator::isValid(
 943     const AttributePtr& theAttribute,
 944     const std::list<std::string>& /*theArguments*/,
 945     Events_InfoMessage& theError) const
 946 {
 947   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 948     theError = "The attribute with the %1 type is not processed";
 949     theError.arg(theAttribute->attributeType());
 950     return false;
 951   }
 952   FeaturePtr anOwner = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 953   AttributeStringPtr anArcTypeAttr = anOwner->string(SketchPlugin_MacroArc::ARC_TYPE());
 954   if (anArcTypeAttr &&
 955       anArcTypeAttr->value() != SketchPlugin_MacroArc::ARC_TYPE_BY_TRANSVERSAL_LINE())
 956     return true; // not applicable for non-transversal arcs
 957
 958   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 959   AttributePtr anAttr = aRefAttr->attr();
 960   if (!anAttr) {
 961     theError = "The attribute %1 should be a point";
 962     theError.arg(theAttribute->id());
 963     return false;
 964   }
 965
 966   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 967   const std::string& aFeatureType = anAttrFeature->getKind();
 968   if (aFeatureType == SketchPlugin_Line::ID()) {
 969     // selected point should be bound point of line
 970     const std::string& aPntId = anAttr->id();
 971     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 972       theError = "The attribute %1 is not supported";
 973       theError.arg(aPntId);
 974       return false;
 975     }
 976   }
 977   else {
 978     theError = "Unable to build perpendicular arc on %1";
 979     theError.arg(anAttrFeature->getKind());
 980     return false;
 981   }
 982
 983   return true;
 984 }
 985
 986 bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
 987                                                  const std::list<std::string>& theArguments,
 988                                                  Events_InfoMessage& theError) const
 989 {
 990   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 991     theError = "The attribute with the %1 type is not processed";
 992     theError.arg(theAttribute->attributeType());
 993     return false;
 994   }
 995   AttributeSelectionPtr anExternalAttr =
 996       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 997   std::shared_ptr<GeomAPI_Edge> anEdge;
 998   if (anExternalAttr && anExternalAttr->value() && anExternalAttr->value()->isEdge()) {
 999     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(anExternalAttr->value()));
1000   } else if(anExternalAttr->context() && anExternalAttr->context()->shape() &&
1001             anExternalAttr->context()->shape()->isEdge()) {
1002     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(anExternalAttr->context()->shape()));
1003   }
1004
1005   if (!anEdge) {
1006     theError = "The attribute %1 should be an edge";
1007     theError.arg(theAttribute->id());
1008     return false;
1009   }
1010
1011   // find a sketch
1012   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1013   std::set<AttributePtr> aRefs = anExternalAttr->owner()->data()->refsToMe();
1014   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1015   for (; anIt != aRefs.end(); ++anIt) {
1016     CompositeFeaturePtr aComp =
1017         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1018     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1019       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1020       break;
1021     }
1022   }
1023   if (!aSketch) {
1024     theError = "There is no sketch referring to the current feature";
1025     return false;
1026   }
1027
1028   // check the edge is intersected with sketch plane
1029   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1030
1031   std::list<GeomPointPtr> anIntersectionsPoints;
1032   anEdge->intersectWithPlane(aPlane, anIntersectionsPoints);
1033   if (anIntersectionsPoints.empty()) {
1034     theError = "The edge is not intersected with sketch plane";
1035     return false;
1036   }
1037   return true;
1038 }
1039
1040 bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
1041                                           const std::list<std::string>& theArguments,
1042                                           Events_InfoMessage& theError) const
1043 {
1044   bool aValid = false;
1045
1046   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
1047     theError = "The attribute with the %1 type is not processed";
1048     theError.arg(theAttribute->attributeType());
1049     return aValid;
1050   }
1051   AttributeReferencePtr aFeatureAttr =
1052             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
1053   std::shared_ptr<SketchPlugin_Feature> aSplitFeature =
1054     std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
1055
1056   ObjectPtr anAttrObject = aFeatureAttr->value();
1057   if (!anAttrObject) {
1058     AttributePtr aPreviewAttr = aSplitFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
1059     aFeatureAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
1060     anAttrObject = aFeatureAttr->value();
1061   }
1062
1063   FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
1064   if (!anAttrFeature)
1065     return aValid;
1066
1067   // B-splines are not supported by the Split yet
1068   if (anAttrFeature->getKind() == SketchPlugin_BSpline::ID() ||
1069       anAttrFeature->getKind() == SketchPlugin_BSplinePeriodic::ID()) {
1070     theError = "Not supported";
1071     return false;
1072   }
1073
1074   std::set<ResultPtr> anEdgeShapes;
1075   ModelGeomAlgo_Shape::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
1076   if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
1077     return aValid;
1078
1079   // coincidences to the feature
1080   std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
1081   ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature,
1082                       SketchPlugin_ConstraintCoincidence::ID(),
1083                       aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
1084
1085   GeomShapePtr anAttrShape = (*anEdgeShapes.begin())->shape();
1086   std::shared_ptr<SketchPlugin_Feature> aSFeature =
1087                                 std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
1088   if (!aSFeature || aSFeature->isCopy())
1089     return false;
1090   SketchPlugin_Sketch* aSketch = aSFeature->sketch();
1091
1092   std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
1093   std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
1094       aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
1095   std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
1096       aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
1097   std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
1098       aData->attribute(SketchPlugin_Sketch::NORM_ID()));
1099   std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
1100
1101   typedef std::map<std::shared_ptr<GeomAPI_Pnt>,
1102                     std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
1103                               std::list<std::shared_ptr<ModelAPI_Object> > > > PointToRefsMap;
1104   PointToRefsMap aPointsInfo;
1105
1106   ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
1107                                               aX->dir(), aDirY, aPointsInfo);
1108   int aCoincidentToFeature = (int)aPointsInfo.size();
1109   if (anAttrFeature->getKind() == SketchPlugin_Circle::ID() ||
1110       anAttrFeature->getKind() == SketchPlugin_Ellipse::ID())
1111     aValid = aCoincidentToFeature >= 2;
1112   else
1113     aValid = aCoincidentToFeature >= 1;
1114
1115   return aValid;
1116 }
1117
1118 bool SketchPlugin_TrimValidator::isValid(const AttributePtr& theAttribute,
1119                                          const std::list<std::string>& theArguments,
1120                                          Events_InfoMessage& theError) const
1121 {
1122   bool aValid = false;
1123
1124   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
1125     theError = "The attribute with the %1 type is not processed";
1126     theError.arg(theAttribute->attributeType());
1127     return aValid;
1128   }
1129   AttributeReferencePtr aBaseObjectAttr =
1130             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
1131
1132   std::shared_ptr<SketchPlugin_Feature> aTrimFeature =
1133                  std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
1134
1135   ObjectPtr aBaseObject = aBaseObjectAttr->value();
1136   if (!aBaseObject) {
1137     AttributePtr aPreviewAttr = aTrimFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
1138     aBaseObjectAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
1139     aBaseObject = aBaseObjectAttr->value();
1140   }
1141
1142   FeaturePtr aBaseFeature = ModelAPI_Feature::feature(aBaseObject);
1143   if (!aBaseFeature)
1144     return aValid;
1145
1146   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1147                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(aBaseFeature);
1148   if (!aSketchFeature.get() || aSketchFeature->isCopy())
1149     return aValid;
1150
1151   // B-splines are not supported by the Trim yet
1152   if (aBaseFeature->getKind() == SketchPlugin_BSpline::ID() ||
1153       aBaseFeature->getKind() == SketchPlugin_BSplinePeriodic::ID()) {
1154     theError = "Not supported";
1155     return false;
1156   }
1157
1158   // point on feature
1159   AttributePoint2DPtr aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1160                        aTrimFeature->data()->attribute(SketchPlugin_Trim::PREVIEW_POINT()));
1161
1162   SketchPlugin_Sketch* aSketch = aTrimFeature->sketch();
1163
1164   std::shared_ptr<GeomAPI_Pnt2d> anAttributePnt2d = aPoint->pnt();
1165   std::shared_ptr<GeomAPI_Pnt> anAttributePnt = aSketch->to3D(anAttributePnt2d->x(),
1166                                                               anAttributePnt2d->y());
1167
1168   std::map<ObjectPtr, std::set<GeomShapePtr> > aCashedShapes;
1169   std::map<ObjectPtr, std::map<std::shared_ptr<GeomAPI_Pnt>,
1170            std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
1171                      std::list<std::shared_ptr<ModelAPI_Object> > > > > anObjectToPoints;
1172   SketchPlugin_SegmentationTools::fillObjectShapes(
1173       aTrimFeature.get(), aBaseObject, aCashedShapes, anObjectToPoints);
1174   const std::set<GeomShapePtr>& aShapes = aCashedShapes[aBaseObject];
1175
1176   return aShapes.size() > 1;
1177 }
1178
1179 bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
1180                                                const std::list<std::string>& theArguments,
1181                                                Events_InfoMessage& theError) const
1182 {
1183   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
1184     theError = "The attribute with the %1 type is not processed";
1185     theError.arg(theAttribute->attributeType());
1186     return false;
1187   }
1188
1189   AttributeSelectionPtr aFeatureAttr =
1190       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
1191   std::shared_ptr<GeomAPI_Edge> anEdge;
1192   std::shared_ptr<SketchPlugin_Feature> aSketchFeature;
1193   if (aFeatureAttr.get()) {
1194     GeomShapePtr aVal = aFeatureAttr->value();
1195     ResultPtr aRes = aFeatureAttr->context();
1196     if (aVal && aVal->isVertex())
1197       return true; // vertex is always could be projected
1198     if (aVal && aVal->isEdge()) {
1199       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->value()));
1200     } else if(aRes && aRes->shape()) {
1201       if (aRes->shape()->isVertex())
1202         return true; // vertex is always could be projected
1203       else if (aRes->shape()->isEdge())
1204         anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->context()->shape()));
1205     }
1206
1207     // try to convert result to sketch feature
1208     if (aRes) {
1209       aSketchFeature =
1210         std::dynamic_pointer_cast<SketchPlugin_Feature>(ModelAPI_Feature::feature(aRes));
1211     }
1212   }
1213   if (!anEdge) {
1214     theError = "The attribute %1 should be an edge or vertex";
1215     theError.arg(theAttribute->id());
1216     return false;
1217   }
1218
1219   // find a sketch
1220   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1221   std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
1222   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1223   for (; anIt != aRefs.end(); ++anIt) {
1224     CompositeFeaturePtr aComp =
1225         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1226     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1227       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1228       break;
1229     }
1230   }
1231   if (!aSketch) {
1232     theError = "There is no sketch referring to the current feature";
1233     return false;
1234   }
1235   if (aSketchFeature && aSketch.get() == aSketchFeature->sketch()) {
1236     theError = "Unable to project feature from the same sketch";
1237     return false;
1238   }
1239
1240   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1241   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
1242   std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
1243
1244   bool aValid = true;
1245   if (anEdge->isLine()) {
1246     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1247     std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
1248     double aDot = fabs(aNormal->dot(aLineDir));
1249     aValid = fabs(aDot - 1.0) >= tolerance * tolerance;
1250     if (!aValid)
1251       theError = "Error: Line is orthogonal to the sketch plane.";
1252   }
1253   else if (anEdge->isCircle() || anEdge->isArc()) {
1254     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1255     std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
1256     double aDot = fabs(aNormal->dot(aCircNormal));
1257     aValid = aDot >= tolerance * tolerance;
1258     if (!aValid)
1259       theError.arg(anEdge->isCircle() ? "Error: Circle is orthogonal to the sketch plane."
1260                                       : "Error: Arc is orthogonal to the sketch plane.");
1261   }
1262   else if (anEdge->isEllipse()) {
1263     std::shared_ptr<GeomAPI_Ellipse> anEllipse = anEdge->ellipse();
1264     std::shared_ptr<GeomAPI_Dir> anEllipseNormal = anEllipse->normal();
1265     double aDot = fabs(aNormal->dot(anEllipseNormal));
1266     aValid = aDot >= tolerance * tolerance;
1267     if (!aValid)
1268       theError.arg(anEdge->isClosed() ? "Error: Ellipse is orthogonal to the sketch plane."
1269                                       : "Error: Elliptic Arc is orthogonal to the sketch plane.");
1270   }
1271
1272   return aValid;
1273 }
1274
1275
1276 static std::set<FeaturePtr> common(const std::set<FeaturePtr>& theSet1,
1277                                    const std::set<FeaturePtr>& theSet2)
1278 {
1279   std::set<FeaturePtr> aCommon;
1280   if (theSet1.empty() || theSet2.empty())
1281     return aCommon;
1282
1283   std::set<FeaturePtr>::const_iterator anIt2 = theSet2.begin();
1284   for (; anIt2 != theSet2.end(); ++anIt2)
1285     if (theSet1.find(*anIt2) != theSet1.end())
1286       aCommon.insert(*anIt2);
1287   return aCommon;
1288 }
1289
1290 bool SketchPlugin_DifferentReferenceValidator::isValid(
1291     const AttributePtr& theAttribute,
1292     const std::list<std::string>& theArguments,
1293     Events_InfoMessage& theError) const
1294 {
1295   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1296
1297   int aNbFeaturesReferred = 0;
1298   int aNbAttributesReferred = 0;
1299   std::set<FeaturePtr> aCommonReferredFeatures;
1300
1301   // find all features referred by attributes listed in theArguments
1302   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1303   for (; anArgIt != theArguments.end(); ++anArgIt) {
1304     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1305     if (!aRefAttr)
1306       continue;
1307
1308     std::set<FeaturePtr> aCoincidentFeatures;
1309     if (aRefAttr->isObject()) {
1310       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1311       if (aFeature) {
1312         aCoincidentFeatures.insert(aFeature);
1313         aNbFeaturesReferred += 1;
1314       }
1315     } else {
1316       AttributePoint2DPtr aPoint =
1317           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1318       if (aPoint) {
1319         aCoincidentFeatures = SketchPlugin_Tools::findFeaturesCoincidentToPoint(aPoint);
1320         aNbAttributesReferred += 1;
1321       }
1322     }
1323
1324     if (aCommonReferredFeatures.empty())
1325       aCommonReferredFeatures = aCoincidentFeatures;
1326     else
1327       aCommonReferredFeatures = common(aCommonReferredFeatures, aCoincidentFeatures);
1328
1329     if (aCommonReferredFeatures.empty())
1330       return true;
1331   }
1332
1333   bool isOk = aNbFeaturesReferred < 1;
1334   if (aNbFeaturesReferred == 1) {
1335     if (aCommonReferredFeatures.size() == 1) {
1336       FeaturePtr aFeature = *aCommonReferredFeatures.begin();
1337       isOk = aNbAttributesReferred <= 1 ||
1338              aFeature->getKind() == SketchPlugin_Circle::ID() ||
1339              aFeature->getKind() == SketchPlugin_Arc::ID();
1340     } else
1341       isOk = false;
1342   }
1343
1344   if (!isOk)
1345     theError = "Attributes are referred to the same feature";
1346   return isOk;
1347 }
1348
1349 bool SketchPlugin_DifferentPointReferenceValidator::isValid(
1350     const AttributePtr& theAttribute,
1351     const std::list<std::string>& theArguments,
1352     Events_InfoMessage& theError) const
1353 {
1354   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1355   std::set<AttributePoint2DPtr> aReferredCoincidentPoints;
1356
1357   // find all points referred by attributes listed in theArguments
1358   bool hasRefsToPoints = false;
1359   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1360   for (; anArgIt != theArguments.end(); ++anArgIt) {
1361     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1362     if (!aRefAttr)
1363       continue;
1364
1365     if (!aRefAttr->isObject()) {
1366       AttributePoint2DPtr aPoint =
1367           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1368       if (aReferredCoincidentPoints.empty())
1369         aReferredCoincidentPoints = SketchPlugin_Tools::findPointsCoincidentToPoint(aPoint);
1370       else if (aReferredCoincidentPoints.find(aPoint) == aReferredCoincidentPoints.end())
1371         return true; // non-coincident point has been found
1372       else
1373         hasRefsToPoints = true;
1374     }
1375   }
1376
1377   if (hasRefsToPoints)
1378     theError = "Attributes are referred to the same point";
1379   return !hasRefsToPoints;
1380 }
1381
1382 bool SketchPlugin_CirclePassedPointValidator::isValid(
1383     const AttributePtr& theAttribute,
1384     const std::list<std::string>&,
1385     Events_InfoMessage& theError) const
1386 {
1387   static const std::string aErrorMessage(
1388       "Passed point refers to the same feature as a center point");
1389
1390   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1391
1392   AttributeRefAttrPtr aCenterRef =
1393       anOwner->refattr(SketchPlugin_MacroCircle::CENTER_POINT_REF_ID());
1394   AttributeRefAttrPtr aPassedRef =
1395       anOwner->refattr(SketchPlugin_MacroCircle::PASSED_POINT_REF_ID());
1396
1397   if (!aPassedRef->isObject())
1398     return true;
1399
1400   FeaturePtr aPassedFeature = ModelAPI_Feature::feature(aPassedRef->object());
1401   if (!aPassedFeature)
1402     return true;
1403
1404   if (aCenterRef->isObject()) {
1405     if (aCenterRef->object() == aPassedRef->object()) {
1406       theError = aErrorMessage;
1407       return false;
1408     }
1409   } else {
1410     AttributePoint2DPtr aCenterPoint =
1411         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aCenterRef->attr());
1412     if (aCenterPoint) {
1413       std::set<FeaturePtr> aCoincidentFeatures =
1414           SketchPlugin_Tools::findFeaturesCoincidentToPoint(aCenterPoint);
1415       // check one of coincident features is a feature referred by passed point
1416       std::set<FeaturePtr>::const_iterator anIt = aCoincidentFeatures.begin();
1417       for(; anIt != aCoincidentFeatures.end(); ++anIt)
1418         if (*anIt == aPassedFeature) {
1419           theError = aErrorMessage;
1420           return false;
1421         }
1422     }
1423   }
1424   return true;
1425 }
1426
1427 bool SketchPlugin_ThirdPointValidator::isValid(
1428     const AttributePtr& theAttribute,
1429     const std::list<std::string>& theArguments,
1430     Events_InfoMessage& theError) const
1431 {
1432   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1433   return arePointsNotOnLine(anOwner, theError) &&
1434          arePointsNotSeparated(anOwner, theArguments, theError);
1435 }
1436
1437 static std::shared_ptr<GeomAPI_Pnt2d> toPoint(const FeaturePtr& theMacroCircle,
1438                                               const std::string& thePointAttrName,
1439                                               const std::string& theRefPointAttrName)
1440 {
1441   AttributePoint2DPtr aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1442       theMacroCircle->attribute(thePointAttrName));
1443   AttributeRefAttrPtr aRefAttr = theMacroCircle->refattr(theRefPointAttrName);
1444
1445   std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointAttr->pnt();
1446   if (aRefAttr) {
1447     if (aRefAttr->isObject()) {
1448       // project a point onto selected feature
1449       std::shared_ptr<SketchPlugin_Feature> aFeature =
1450           std::dynamic_pointer_cast<SketchPlugin_Feature>(
1451           ModelAPI_Feature::feature(aRefAttr->object()));
1452       if (aFeature) {
1453         SketchPlugin_Sketch* aSketch = aFeature->sketch();
1454         std::shared_ptr<GeomAPI_Edge> anEdge =
1455             std::dynamic_pointer_cast<GeomAPI_Edge>(aFeature->lastResult()->shape());
1456         if (anEdge) {
1457           std::shared_ptr<GeomAPI_Pnt> aPoint3D = aSketch->to3D(aPoint->x(), aPoint->y());
1458           if (anEdge->isLine())
1459             aPoint3D = anEdge->line()->project(aPoint3D);
1460           else if (anEdge->isCircle())
1461             aPoint3D = anEdge->circle()->project(aPoint3D);
1462           if(aPoint3D)
1463             aPoint = aSketch->to2D(aPoint3D);
1464         }
1465       }
1466     } else {
1467       AttributePoint2DPtr anOtherPoint =
1468           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1469       if (anOtherPoint)
1470         aPoint = anOtherPoint->pnt(); // the reference point is much more precise, use it
1471     }
1472   }
1473
1474   return aPoint;
1475 }
1476
1477 static void threePointsOfFeature(const FeaturePtr& theMacroFeature,
1478                                  std::shared_ptr<GeomAPI_Pnt2d> thePoints[3])
1479 {
1480   if (theMacroFeature->getKind() == SketchPlugin_MacroCircle::ID()) {
1481     thePoints[0] = toPoint(theMacroFeature,
1482           SketchPlugin_MacroCircle::FIRST_POINT_ID(),
1483           SketchPlugin_MacroCircle::FIRST_POINT_REF_ID());
1484     thePoints[1] = toPoint(theMacroFeature,
1485           SketchPlugin_MacroCircle::SECOND_POINT_ID(),
1486           SketchPlugin_MacroCircle::SECOND_POINT_REF_ID());
1487     thePoints[2] = toPoint(theMacroFeature,
1488           SketchPlugin_MacroCircle::THIRD_POINT_ID(),
1489           SketchPlugin_MacroCircle::THIRD_POINT_REF_ID());
1490   } else if (theMacroFeature->getKind() == SketchPlugin_MacroArc::ID()) {
1491     thePoints[0] = toPoint(theMacroFeature,
1492           SketchPlugin_MacroArc::START_POINT_2_ID(),
1493           SketchPlugin_MacroArc::START_POINT_REF_ID());
1494     thePoints[1] = toPoint(theMacroFeature,
1495           SketchPlugin_MacroArc::END_POINT_2_ID(),
1496           SketchPlugin_MacroArc::END_POINT_REF_ID());
1497     thePoints[2] = toPoint(theMacroFeature,
1498           SketchPlugin_MacroArc::PASSED_POINT_ID(),
1499           SketchPlugin_MacroArc::PASSED_POINT_REF_ID());
1500   }
1501 }
1502
1503 static bool isPointsOnLine(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint1,
1504                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint2,
1505                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint3)
1506 {
1507   static const double aTolerance = 1.e-7;
1508   if (thePoint1->distance(thePoint2) < aTolerance ||
1509       thePoint1->distance(thePoint3) < aTolerance)
1510     return true;
1511
1512   std::shared_ptr<GeomAPI_Dir2d> aDirP1P2(new GeomAPI_Dir2d(thePoint2->x() - thePoint1->x(),
1513                                                             thePoint2->y() - thePoint1->y()));
1514   std::shared_ptr<GeomAPI_Dir2d> aDirP1P3(new GeomAPI_Dir2d(thePoint3->x() - thePoint1->x(),
1515                                                             thePoint3->y() - thePoint1->y()));
1516   return fabs(aDirP1P2->cross(aDirP1P3)) < aTolerance;
1517 }
1518
1519 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Lin>& theLine,
1520                          const std::shared_ptr<GeomAPI_Pnt>& thePoint1,
1521                          const std::shared_ptr<GeomAPI_Pnt>& thePoint2)
1522 {
1523   static const double aTolerance = 1.e-7;
1524   std::shared_ptr<GeomAPI_Dir> aLineDir = theLine->direction();
1525   std::shared_ptr<GeomAPI_XYZ> aLineLoc = theLine->location()->xyz();
1526
1527   std::shared_ptr<GeomAPI_XYZ> aVec1 = thePoint1->xyz()->decreased(aLineLoc);
1528   // the first point is on the line
1529   if (aVec1->squareModulus() < aTolerance * aTolerance)
1530     return false;
1531   std::shared_ptr<GeomAPI_Dir> aDirP1L(new GeomAPI_Dir(aVec1));
1532   std::shared_ptr<GeomAPI_XYZ> aVec2 = thePoint2->xyz()->decreased(aLineLoc);
1533   // the second point is on the line
1534   if (aVec2->squareModulus() < aTolerance * aTolerance)
1535     return false;
1536   std::shared_ptr<GeomAPI_Dir> aDirP2L(new GeomAPI_Dir(aVec2));
1537
1538   return aLineDir->cross(aDirP1L)->dot(aLineDir->cross(aDirP2L)) > -aTolerance;
1539 }
1540
1541 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Circ>& theCircle,
1542                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint1,
1543                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint2)
1544 {
1545   static const double aTolerance = 1.e-7;
1546   std::shared_ptr<GeomAPI_Pnt> aCenter = theCircle->center();
1547   double aDistP1C = thePoint1->distance(aCenter);
1548   double aDistP2C = thePoint2->distance(aCenter);
1549   return (aDistP1C - theCircle->radius()) * (aDistP2C - theCircle->radius()) > -aTolerance;
1550 }
1551
1552 bool SketchPlugin_ThirdPointValidator::arePointsNotOnLine(
1553     const FeaturePtr& theMacroFeature,
1554     Events_InfoMessage& theError) const
1555 {
1556   static const std::string aErrorPointsOnLine(
1557       "Selected points are on the same line");
1558
1559   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1560   threePointsOfFeature(theMacroFeature, aPoints);
1561
1562   if (isPointsOnLine(aPoints[0], aPoints[1], aPoints[2])) {
1563     theError = aErrorPointsOnLine;
1564     return false;
1565   }
1566   return true;
1567 }
1568
1569 bool SketchPlugin_ThirdPointValidator::arePointsNotSeparated(
1570     const FeaturePtr& theMacroFeature,
1571     const std::list<std::string>& theArguments,
1572     Events_InfoMessage& theError) const
1573 {
1574   static const std::string aErrorPointsApart(
1575       "Selected entity is lying between first two points");
1576
1577   AttributeRefAttrPtr aThirdPointRef = theMacroFeature->refattr(theArguments.front());
1578   FeaturePtr aRefByThird;
1579   if (aThirdPointRef->isObject())
1580     aRefByThird = ModelAPI_Feature::feature(aThirdPointRef->object());
1581   if (!aRefByThird)
1582     return true;
1583
1584   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1585   threePointsOfFeature(theMacroFeature, aPoints);
1586
1587   std::shared_ptr<GeomAPI_Edge> aThirdShape =
1588       std::dynamic_pointer_cast<GeomAPI_Edge>(aRefByThird->lastResult()->shape());
1589   if (!aThirdShape)
1590     return true;
1591
1592   SketchPlugin_Sketch* aSketch =
1593       std::dynamic_pointer_cast<SketchPlugin_Feature>(theMacroFeature)->sketch();
1594   std::shared_ptr<GeomAPI_Pnt> aFirstPnt3D = aSketch->to3D(aPoints[0]->x(), aPoints[0]->y());
1595   std::shared_ptr<GeomAPI_Pnt> aSecondPnt3D = aSketch->to3D(aPoints[1]->x(), aPoints[1]->y());
1596
1597   bool isOk = true;
1598   if (aThirdShape->isLine())
1599     isOk = isOnSameSide(aThirdShape->line(), aFirstPnt3D, aSecondPnt3D);
1600   else if (aThirdShape->isCircle() || aThirdShape->isArc())
1601     isOk = isOnSameSide(aThirdShape->circle(), aFirstPnt3D, aSecondPnt3D);
1602
1603   if (!isOk)
1604     theError = aErrorPointsApart;
1605   return isOk;
1606 }
1607
1608 bool SketchPlugin_ArcEndPointValidator::isValid(
1609     const AttributePtr& theAttribute,
1610     const std::list<std::string>& theArguments,
1611     Events_InfoMessage& theError) const
1612 {
1613   FeaturePtr aFeature = ModelAPI_Feature::feature(theAttribute->owner());
1614   AttributeRefAttrPtr anEndPointRef = aFeature->refattr(theArguments.front());
1615
1616   if(!anEndPointRef.get()) {
1617     return true;
1618   }
1619
1620   ObjectPtr anObject = anEndPointRef->object();
1621   AttributePtr anAttr = anEndPointRef->attr();
1622   if(!anObject.get() && !anAttr.get()) {
1623     return true;
1624   }
1625
1626   if(anEndPointRef->attr().get()) {
1627     return false;
1628   }
1629
1630   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1631   if(aResult.get()) {
1632     GeomShapePtr aShape = aResult->shape();
1633     if(aShape.get() && aShape->isVertex()) {
1634       return false;
1635     }
1636   }
1637
1638   aFeature = ModelAPI_Feature::feature(anObject);
1639   if(aFeature.get()) {
1640     if(aFeature->getKind() == SketchPlugin_Point::ID()) {
1641       return false;
1642     }
1643   }
1644
1645   return true;
1646 }
1647
1648 static GeomShapePtr toInfiniteEdge(const GeomShapePtr theShape)
1649 {
1650   if(!theShape.get()) {
1651     return theShape;
1652   }
1653
1654   if(!theShape->isEdge()) {
1655     return theShape;
1656   }
1657
1658   std::shared_ptr<GeomAPI_Edge> anEdge(new GeomAPI_Edge(theShape));
1659
1660   if(!anEdge.get()) {
1661     return theShape;
1662   }
1663
1664   if(anEdge->isLine()) {
1665     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1666     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::line(aLine);
1667     return aShape;
1668   }
1669
1670   if(anEdge->isCircle() || anEdge->isArc()) {
1671     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1672     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::lineCircle(aCircle);
1673     return aShape;
1674   }
1675
1676   return theShape;
1677 }
1678
1679 bool SketchPlugin_ArcEndPointIntersectionValidator::isValid(
1680     const AttributePtr& theAttribute,
1681     const std::list<std::string>& theArguments,
1682     Events_InfoMessage& theError) const
1683 {
1684   std::shared_ptr<SketchPlugin_MacroArc> anArcFeature =
1685       std::dynamic_pointer_cast<SketchPlugin_MacroArc>(theAttribute->owner());
1686   AttributeRefAttrPtr anEndPointRef = anArcFeature->refattr(theArguments.front());
1687
1688   if(!anEndPointRef.get()) {
1689     return true;
1690   }
1691
1692   GeomShapePtr anArcShape = toInfiniteEdge(anArcFeature->getArcShape(false));
1693
1694   if(!anArcShape.get() || anArcShape->isNull()) {
1695     return true;
1696   }
1697
1698   ObjectPtr anObject = anEndPointRef->object();
1699   AttributePtr anAttr = anEndPointRef->attr();
1700   if(!anObject.get() && !anAttr.get()) {
1701     return true;
1702   }
1703
1704   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1705   if(aResult.get()) {
1706     GeomShapePtr aShape = aResult->shape();
1707     if (!aShape->isEdge())
1708       return true;
1709     aShape = toInfiniteEdge(aShape);
1710     if(aShape.get() && !aShape->isNull()) {
1711       if(anArcShape->isIntersect(aShape)) {
1712         return true;
1713       }
1714     }
1715   }
1716
1717   FeaturePtr aSelectedFeature = ModelAPI_Feature::feature(anObject);
1718   if(aSelectedFeature.get()) {
1719     std::list<ResultPtr> aResults = aSelectedFeature->results();
1720     for(std::list<ResultPtr>::const_iterator anIt = aResults.cbegin();
1721         anIt != aResults.cend();
1722         ++anIt)
1723     {
1724       GeomShapePtr aShape = (*anIt)->shape();
1725       if (!aShape->isEdge())
1726         return true;
1727       aShape = toInfiniteEdge(aShape);
1728       if(aShape.get() && !aShape->isNull()) {
1729         if(anArcShape->isIntersect(aShape)) {
1730           return true;
1731         }
1732       }
1733     }
1734   }
1735
1736   return false;
1737 }
1738
1739 bool SketchPlugin_HasNoConstraint::isValid(const AttributePtr& theAttribute,
1740                                            const std::list<std::string>& theArguments,
1741                                            Events_InfoMessage& theError) const
1742 {
1743   std::set<std::string> aFeatureKinds;
1744   for (std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1745        anArgIt != theArguments.end(); anArgIt++) {
1746     aFeatureKinds.insert(*anArgIt);
1747   }
1748
1749   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1750     theError = "The attribute with the %1 type is not processed";
1751     theError.arg(theAttribute->attributeType());
1752     return false;
1753   }
1754
1755   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
1756                                                                       (theAttribute);
1757   bool isObject = aRefAttr->isObject();
1758   if (!isObject) {
1759     theError = "It uses an empty object";
1760     return false;
1761   }
1762   ObjectPtr anObject = aRefAttr->object();
1763   FeaturePtr aFeature = ModelAPI_Feature::feature(anObject);
1764   if (!aFeature.get()) {
1765     theError = "The feature of the checked attribute is empty";
1766     return false;
1767   }
1768
1769   FeaturePtr aCurrentFeature = ModelAPI_Feature::feature(aRefAttr->owner());
1770
1771   std::set<AttributePtr> aRefsList = anObject->data()->refsToMe();
1772   std::set<AttributePtr>::const_iterator anIt = aRefsList.begin();
1773   for (; anIt != aRefsList.end(); anIt++) {
1774     FeaturePtr aRefFeature = ModelAPI_Feature::feature((*anIt)->owner());
1775     if (aRefFeature.get() && aCurrentFeature != aRefFeature &&
1776         aFeatureKinds.find(aRefFeature->getKind()) != aFeatureKinds.end())
1777       return false; // constraint is found, that means that the check is not valid
1778   }
1779   return true;
1780 }
1781
1782 bool SketchPlugin_ReplicationReferenceValidator::isValid(
1783     const AttributePtr& theAttribute,
1784     const std::list<std::string>& theArguments,
1785     Events_InfoMessage& theError) const
1786 {
1787   AttributeRefAttrPtr aRefAttr =
1788       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1789   if (!aRefAttr)
1790   {
1791     theError = "Incorrect attribute";
1792     return false;
1793   }
1794
1795   ObjectPtr anOwner;
1796   if (aRefAttr->isObject())
1797     anOwner = aRefAttr->object();
1798   else
1799   {
1800     AttributePtr anAttr = aRefAttr->attr();
1801     anOwner = anAttr->owner();
1802   }
1803   FeaturePtr anAttrOwnerFeature = ModelAPI_Feature::feature(anOwner);
1804   if (!anAttrOwnerFeature)
1805     return true;
1806   AttributeBooleanPtr aCopyAttr = anAttrOwnerFeature->boolean(SketchPlugin_SketchEntity::COPY_ID());
1807   if (!aCopyAttr || !aCopyAttr->value())
1808     return true; // feature is not a copy, thus valid
1809
1810   // check the copy feature is already referred by the "Multi" feature
1811   FeaturePtr aMultiFeature = ModelAPI_Feature::feature(theAttribute->owner());
1812   AttributeRefListPtr aRefList = aMultiFeature->reflist(theArguments.front());
1813   for (int i = 0; i < aRefList->size(); ++i)
1814   {
1815     FeaturePtr aRefOwner = ModelAPI_Feature::feature(aRefList->object(i));
1816     if (aRefOwner == anAttrOwnerFeature)
1817     {
1818       theError = "Attribute refers to the object generated by this feature";
1819       return false;
1820     }
1821   }
1822
1823   return true;
1824 }
1825
1826 bool SketchPlugin_SketchFeatureValidator::isValid(const AttributePtr& theAttribute,
1827                                                   const std::list<std::string>& theArguments,
1828                                                   Events_InfoMessage& theError) const
1829 {
1830   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId() &&
1831       theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
1832     theError = "The attribute with the %1 type is not processed";
1833     theError.arg(theAttribute->attributeType());
1834     return false;
1835   }
1836
1837   // check the attribute refers to a sketch feature
1838   bool isSketchFeature = false;
1839   AttributeRefAttrPtr aRefAttr =
1840       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1841   if (aRefAttr) {
1842     isSketchFeature = aRefAttr->isObject();
1843     if (isSketchFeature) {
1844       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1845       isSketchFeature = aFeature.get() != NULL;
1846       if (isSketchFeature) {
1847         std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1848             std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
1849         isSketchFeature = aSketchFeature.get() != NULL;
1850       }
1851     }
1852   }
1853   else {
1854     AttributeReferencePtr aReference =
1855       std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
1856     if (aReference) {
1857       FeaturePtr aFeature = ModelAPI_Feature::feature(aReference->value());
1858       isSketchFeature = aFeature.get() && aFeature->getKind() == SketchPlugin_Sketch::ID();
1859     }
1860   }
1861
1862   if (!isSketchFeature)
1863     theError = "The object selected is not a sketch feature";
1864   return isSketchFeature;
1865 }
1866
1867 bool SketchPlugin_MultiRotationAngleValidator::isValid(const AttributePtr& theAttribute,
1868                                                        const std::list<std::string>& theArguments,
1869                                                        Events_InfoMessage& theError) const
1870 {
1871   if (theAttribute->attributeType() != ModelAPI_AttributeDouble::typeId()) {
1872     theError = "The attribute with the %1 type is not processed";
1873     theError.arg(theAttribute->attributeType());
1874     return false;
1875   }
1876
1877   AttributeDoublePtr anAngleAttr =
1878     std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(theAttribute);
1879
1880   FeaturePtr aMultiRotation = ModelAPI_Feature::feature(theAttribute->owner());
1881   AttributeStringPtr anAngleType =
1882       aMultiRotation->string(SketchPlugin_MultiRotation::ANGLE_TYPE());
1883   AttributeIntegerPtr aNbCopies =
1884       aMultiRotation->integer(SketchPlugin_MultiRotation::NUMBER_OF_OBJECTS_ID());
1885
1886   if (anAngleType->value() != "FullAngle")
1887   {
1888     double aFullAngleValue = anAngleAttr->value() * (aNbCopies->value() - 1);
1889     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 359.9999999)
1890     {
1891       theError = "Rotation single angle should produce full angle less than 360 degree";
1892       return false;
1893     }
1894   }
1895   else
1896   {
1897     double aFullAngleValue = anAngleAttr->value();
1898     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 360.0000001)
1899     {
1900       theError = "Rotation full angle should be in range [0, 360]";
1901       return false;
1902     }
1903   }
1904
1905   return true;
1906 }
1907
1908 bool SketchPlugin_BSplineValidator::isValid(const AttributePtr& theAttribute,
1909                                             const std::list<std::string>& theArguments,
1910                                             Events_InfoMessage& theError) const
1911 {
1912   AttributePoint2DArrayPtr aPolesArray =
1913       std::dynamic_pointer_cast<GeomDataAPI_Point2DArray>(theAttribute);
1914   if (!aPolesArray)
1915     return false;
1916
1917   if (aPolesArray->size() < 2) {
1918     theError = "Number of B-spline poles should be 2 or more";
1919     return false;
1920   }
1921
1922   return true;
1923 }
1924
1925 bool SketchPlugin_CurveFittingValidator::isValid(const FeaturePtr& theFeature,
1926                                                  const std::list<std::string>& theArguments,
1927                                                  Events_InfoMessage& theError) const
1928 {
1929   AttributeRefAttrListPtr aRefAttrList =
1930       theFeature->refattrlist(SketchPlugin_CurveFitting::POINTS_ID());
1931   AttributeBooleanPtr aPeriodicAttr =
1932       theFeature->boolean(SketchPlugin_CurveFitting::PERIODIC_ID());
1933
1934   // check number of selected entities
1935   int aMinNbPoints = aPeriodicAttr->value() ? 3 : 2;
1936   if (aRefAttrList->size() < aMinNbPoints) {
1937     theError = "Not enough points selected. Need at least %1 points.";
1938     theError.arg(aMinNbPoints);
1939     return false;
1940   }
1941   return true;
1942 }