src/SketchPlugin/SketchPlugin_Validators.cpp

   1 // Copyright (C) 2014-2020  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 <ModelAPI_Data.h>
  50 #include <ModelAPI_Validator.h>
  51 #include <ModelAPI_AttributeDouble.h>
  52 #include <ModelAPI_AttributeInteger.h>
  53 #include <ModelAPI_AttributeRefAttr.h>
  54 #include <ModelAPI_AttributeRefAttrList.h>
  55 #include <ModelAPI_AttributeRefList.h>
  56 #include <ModelAPI_AttributeSelectionList.h>
  57 #include <ModelAPI_AttributeString.h>
  58 #include <ModelAPI_Session.h>
  59 #include <ModelAPI_Tools.h>
  60 #include <ModelAPI_ResultConstruction.h>
  61
  62 #include <ModelGeomAlgo_Point2D.h>
  63 #include <ModelGeomAlgo_Shape.h>
  64
  65 #include <GeomAlgoAPI_EdgeBuilder.h>
  66 #include <GeomAlgoAPI_ShapeTools.h>
  67
  68 #include <GeomAPI_Circ.h>
  69 #include <GeomAPI_Dir2d.h>
  70 #include <GeomAPI_Ellipse.h>
  71 #include <GeomAPI_Lin.h>
  72 #include <GeomAPI_Edge.h>
  73 #include <GeomAPI_Vertex.h>
  74
  75 #include <GeomDataAPI_Point2D.h>
  76 #include <GeomDataAPI_Point2DArray.h>
  77
  78 #include <algorithm>
  79 #include <cmath>
  80
  81 #ifdef _MSC_VER
  82 #pragma warning(disable: 4100)
  83 #endif
  84
  85 const double tolerance = 1.e-7;
  86
  87 static bool isSpline(FeaturePtr theFeature)
  88 {
  89   return theFeature && (theFeature->getKind() == SketchPlugin_BSpline::ID() ||
  90                         theFeature->getKind() == SketchPlugin_BSplinePeriodic::ID());
  91 }
  92
  93
  94 bool SketchPlugin_DistanceAttrValidator::isValid(const AttributePtr& theAttribute,
  95                                                  const std::list<std::string>& theArguments,
  96                                                  Events_InfoMessage& theError) const
  97 {
  98   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
  99     theError = "The attribute with the %1 type is not processed";
 100     theError.arg(theAttribute->attributeType());
 101     return false;
 102   }
 103
 104   // there is a check whether the feature contains a point and a linear edge or two point values
 105   std::string aParamA = theArguments.front();
 106   SessionPtr aMgr = ModelAPI_Session::get();
 107   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 108
 109   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
 110                                                                       (theAttribute);
 111   bool isObject = aRefAttr->isObject();
 112   if (!isObject) {
 113     // an attribute is a point. A point value is valid always for the distance
 114     return true;
 115   } else {
 116     // 1. check whether the references object is a linear
 117     ObjectPtr anObject = aRefAttr->object();
 118
 119     const ModelAPI_AttributeValidator* aShapeValidator =
 120       dynamic_cast<const ModelAPI_AttributeValidator*>(
 121       aFactory->validator("GeomValidators_ShapeType"));
 122     std::list<std::string> anArguments;
 123     anArguments.push_back("circle");
 124     Events_InfoMessage aCircleError;
 125     bool aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aCircleError);
 126     // the circle line is not a valid case
 127     if (aShapeValid) {
 128       theError = "Circle can not be used in distance constraint";
 129       return false;
 130     }
 131
 132     anArguments.clear();
 133     anArguments.push_back("line");
 134     Events_InfoMessage aLineError;
 135     aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aLineError);
 136     // if the attribute value is not a line, that means it is a vertex. A vertex is always valid
 137     if (aShapeValid) {
 138       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 139       // If it is a line then we have to check that first attribute id not a line
 140       std::shared_ptr<SketchPlugin_Feature> aSFeature =
 141         std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 142       SketchPlugin_Sketch* aSketch = aSFeature->sketch();
 143       std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(aSketch);
 144       std::shared_ptr<GeomDataAPI_Point2D> aPoint = SketcherPrs_Tools::getFeaturePoint(
 145         aFeature->data(), aParamA, aPlane);
 146       if (!aPoint.get()) {
 147         theError = "One of parameters of distance constraint should be a point";
 148         return false;
 149       }
 150     }
 151   }
 152   return true;
 153 }
 154
 155 bool SketchPlugin_TangentAttrValidator::isValid(const AttributePtr& theAttribute,
 156                                                 const std::list<std::string>& theArguments,
 157                                                 Events_InfoMessage& theError) const
 158 {
 159   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 160     theError = "The attribute with the %1 type is not processed";
 161     theError.arg(theAttribute->attributeType());
 162     return false;
 163   }
 164
 165   // there is a check whether the feature contains a point and a linear edge or two point values
 166   std::string aParamA = theArguments.front();
 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
 264   FeaturePtr anOwner = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 265   AttributeRefAttrPtr aRefAttr =
 266       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 267
 268   bool isObject = aRefAttr->isObject();
 269   ObjectPtr anObject = aRefAttr->object();
 270   if (isObject && anObject.get()) {
 271     FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
 272
 273     AttributeRefAttrPtr aOtherAttr = anOwner->refattr(aParamA);
 274     ObjectPtr aOtherObject = aOtherAttr->object();
 275     FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
 276
 277     // at least one feature should be a line
 278     if (aRefFea->getKind() != SketchPlugin_Line::ID() &&
 279         aOtherFea && aOtherFea->getKind() != SketchPlugin_Line::ID()) {
 280       theError = "At least one feature should be a line";
 281       return false;
 282     }
 283     else if (isSpline(aRefFea) || isSpline(aOtherFea)) {
 284       theError = "B-spline is not supported";
 285       return false;
 286     }
 287   }
 288   else {
 289     theError = "It uses an empty object";
 290     return false;
 291   }
 292
 293   return true;
 294 }
 295
 296 bool SketchPlugin_NotFixedValidator::isValid(const AttributePtr& theAttribute,
 297                                              const std::list<std::string>& theArguments,
 298                                              Events_InfoMessage& theError) const
 299 {
 300   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 301     theError = "The attribute with the %1 type is not processed";
 302     theError.arg(theAttribute->attributeType());
 303     return false;
 304   }
 305
 306   std::shared_ptr<SketchPlugin_Feature> aFeature =
 307       std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
 308   if (!aFeature)
 309     return true;
 310
 311   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 312
 313   SketchPlugin_Sketch* aSketch = aFeature->sketch();
 314   int aNbFeatures = aSketch->numberOfSubs();
 315   for (int anInd = 0; anInd < aNbFeatures; anInd++) {
 316     FeaturePtr aSubFeature = aSketch->subFeature(anInd);
 317     if (aSubFeature->getKind() != SketchPlugin_ConstraintRigid::ID() || aSubFeature == aFeature)
 318       continue;
 319     AttributeRefAttrPtr aRAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 320         aSubFeature->attribute(SketchPlugin_ConstraintRigid::ENTITY_A()));
 321     if (aRefAttr->isObject()) {
 322       if (aRefAttr->object() == aRAttr->object()) {
 323         ObjectPtr anObject = aRefAttr->object();
 324         std::string aName = anObject.get() ? anObject->data()->name() : "";
 325         theError = "The object %1 has been already fixed.";
 326         theError.arg(aName);
 327         return false;
 328       }
 329     }
 330     else if (aRefAttr->attr() == aRAttr->attr()) {
 331       AttributePtr anAttribute = aRefAttr->attr();
 332       std::string aName = anAttribute.get() ? anAttribute->id() : "";
 333       theError = "The attribute %1 has been already fixed.";
 334       theError.arg(aName);
 335       return false;
 336     }
 337   }
 338   return true;
 339 }
 340
 341 bool SketchPlugin_EqualAttrValidator::isValid(const AttributePtr& theAttribute,
 342                                               const std::list<std::string>& theArguments,
 343                                               Events_InfoMessage& theError) const
 344 {
 345   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 346     theError = "The attribute with the %1 type is not processed";
 347     theError.arg(theAttribute->attributeType());
 348     return false;
 349   }
 350
 351   std::string aParamA = theArguments.front();
 352   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 353   AttributeRefAttrPtr aRefAttr[2];
 354   aRefAttr[0] = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 355   aRefAttr[1] = aFeature->data()->refattr(aParamA);
 356
 357   if (!aRefAttr[0]->isObject() || !aRefAttr[1]->isObject()) {
 358     theError = "Attributes can not be used in equal constraint";
 359     return false;
 360   }
 361
 362   std::string aType[2];
 363   std::list<std::string> anArguments;
 364   for (int i = 0; i < 2; i++) {
 365     aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 366     if (!aFeature.get())
 367       return true;
 368
 369     aType[i] = aFeature->getKind();
 370     if (aFeature->getKind() != SketchPlugin_Line::ID() &&
 371         aFeature->getKind() != SketchPlugin_Circle::ID() &&
 372         aFeature->getKind() != SketchPlugin_Arc::ID() &&
 373         aFeature->getKind() != SketchPlugin_Ellipse::ID() &&
 374         aFeature->getKind() != SketchPlugin_EllipticArc::ID()) {
 375       theError = "The %1 feature is not supported by the Equal constraint.";
 376       theError.arg(aFeature->getKind());
 377       // wrong type of attribute
 378       return false;
 379     }
 380   }
 381
 382   bool isOk = aType[0] == aType[1];
 383   if (!isOk) {
 384     // circle and arc may be equal
 385     isOk = (aType[0] == SketchPlugin_Arc::ID() && aType[1] == SketchPlugin_Circle::ID())
 386         || (aType[0] == SketchPlugin_Circle::ID() && aType[1] == SketchPlugin_Arc::ID());
 387   }
 388   if (!isOk) {
 389     // ellipse and elliptic arc may be equal
 390     isOk = (aType[0] == SketchPlugin_EllipticArc::ID() && aType[1] == SketchPlugin_Ellipse::ID())
 391         || (aType[0] == SketchPlugin_Ellipse::ID() && aType[1] == SketchPlugin_EllipticArc::ID());
 392   }
 393   if (!isOk) {
 394     theError = "Features with kinds %1 and %2 can not be equal.";
 395     theError.arg(aType[0]).arg(aType[1]);
 396     return false;
 397   }
 398   return true;
 399 }
 400
 401 bool SketchPlugin_MirrorAttrValidator::isValid(const AttributePtr& theAttribute,
 402                                                const std::list<std::string>& theArguments,
 403                                                Events_InfoMessage& theError) const
 404 {
 405   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 406     theError = "The attribute with the %1 type is not processed";
 407     theError.arg(theAttribute->attributeType());
 408     return false;
 409   }
 410
 411   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 412   AttributeRefListPtr aSelAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 413
 414   AttributeRefListPtr aRefListOfMirrored = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 415       aFeature->attribute(SketchPlugin_Constraint::ENTITY_C()));
 416   std::list<ObjectPtr> aMirroredObjects = aRefListOfMirrored->list();
 417
 418   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 419     ObjectPtr aSelObject = aSelAttr->object(anInd);
 420
 421     // B-splines are not supported in Mirror yet
 422     FeaturePtr aSelFeature = ModelAPI_Feature::feature(aSelObject);
 423     if (aSelFeature && (aSelFeature->getKind() == SketchPlugin_BSpline::ID() ||
 424         aSelFeature->getKind() == SketchPlugin_BSplinePeriodic::ID())) {
 425       theError = "Not supported";
 426       return false;
 427     }
 428
 429     std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 430     std::list<ObjectPtr>::iterator aMirIter = aMirroredObjects.begin();
 431     for (; aMirIter != aMirroredObjects.end(); aMirIter++)
 432       if (aSelObject == *aMirIter) {
 433         theError = "The object %1 is a result of mirror";
 434         theError.arg(aName);
 435         return false;
 436       }
 437   }
 438   return true;
 439 }
 440
 441 bool SketchPlugin_CoincidenceAttrValidator::isValid(const AttributePtr& theAttribute,
 442                                                     const std::list<std::string>& theArguments,
 443                                                     Events_InfoMessage& theError) const
 444 {
 445   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 446     theError = "The attribute with the %1 type is not processed";
 447     theError.arg(theAttribute->attributeType());
 448     return false;
 449   }
 450
 451   // there is a check whether the feature contains a point and a linear edge or two point values
 452   std::string aParamA = theArguments.front();
 453
 454   FeaturePtr aConstraint = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 455   AttributeRefAttrPtr aRefAttrA = aConstraint->data()->refattr(aParamA);
 456   if (!aRefAttrA) {
 457     theError = "The %1 attribute should be %2";
 458     theError.arg(aParamA).arg(ModelAPI_AttributeRefAttr::typeId());
 459     return false;
 460   }
 461
 462   AttributeRefAttrPtr aRefAttrB =
 463     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 464
 465   // first attribute is a point, it may coincide with any object
 466   if (!aRefAttrA->isObject())
 467     return true;
 468   else {
 469     ObjectPtr anObject = aRefAttrA->object();
 470     if (!anObject.get()) {
 471       theError = "%1 attribute has an empty object";
 472       theError.arg(aParamA);
 473       return false;
 474     }
 475     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrA->object());
 476     if (!aFeature.get()) {
 477       theError = "%1 attribute has an empty feature";
 478       theError.arg(aParamA);
 479       return false;
 480     }
 481
 482     if (aFeature->getKind() == SketchPlugin_Point::ID())
 483       return true;
 484   }
 485
 486   // second attribute is a point, it may coincide with any object
 487   if (!aRefAttrB->isObject())
 488     return true;
 489   else {
 490     FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrB->object());
 491     if (!aFeature) {
 492       theError = "%1 attribute has an empty object";
 493       theError.arg(theAttribute->id());
 494       return false;
 495     }
 496     if (aFeature->getKind() == SketchPlugin_Point::ID())
 497       return true;
 498   }
 499   theError = "There is no an attribute filled by a point";
 500   return false;
 501 }
 502
 503
 504 bool SketchPlugin_CopyValidator::isValid(const AttributePtr& theAttribute,
 505                                          const std::list<std::string>& theArguments,
 506                                          Events_InfoMessage& theError) const
 507 {
 508   if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
 509     theError = "The attribute with the %1 type is not processed";
 510     theError.arg(theAttribute->attributeType());
 511     return false;
 512   }
 513
 514   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 515   AttributeRefListPtr aSelAttr =
 516     std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 517   std::set<ObjectPtr> aSelected;
 518
 519   AttributeRefListPtr aRefListOfInitial = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 520       aFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
 521   AttributeRefListPtr aRefListOfCopied = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
 522       aFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
 523   std::list<ObjectPtr> anInitialObjects = aRefListOfInitial->list();
 524   std::list<ObjectPtr> aCopiedObjects = aRefListOfCopied->list();
 525
 526   std::list<ObjectPtr>::iterator anObjIter;
 527   for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
 528     ObjectPtr aSelObject = aSelAttr->object(anInd);
 529     if (aSelected.find(aSelObject) != aSelected.end()) {
 530       theError = "Error: An object selected twice";
 531       return false;
 532     }
 533     aSelected.insert(aSelObject);
 534
 535     anObjIter = anInitialObjects.begin();
 536     for (; anObjIter != anInitialObjects.end(); anObjIter++)
 537       if (aSelObject == *anObjIter)
 538         break;
 539     if (anObjIter != anInitialObjects.end())
 540       continue;
 541
 542     // B-splines are not supported in Copying features
 543     FeaturePtr aSelFeature = ModelAPI_Feature::feature(aSelObject);
 544     if (aFeature->getKind() != SketchPlugin_Offset::ID() &&
 545         aSelFeature && (aSelFeature->getKind() == SketchPlugin_BSpline::ID() ||
 546         aSelFeature->getKind() == SketchPlugin_BSplinePeriodic::ID())) {
 547       theError = "Not supported";
 548       return false;
 549     }
 550
 551     anObjIter = aCopiedObjects.begin();
 552     for (; anObjIter != aCopiedObjects.end(); anObjIter++) {
 553       bool isFound = aSelObject == *anObjIter;
 554       if (!isFound) {
 555         // check in the results of the feature
 556         FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
 557         if (aFeature) {
 558           const std::list<ResultPtr>& aResults = aFeature->results();
 559           for (std::list<ResultPtr>::const_iterator aResIt = aResults.begin();
 560             aResIt != aResults.end() && !isFound; ++aResIt) {
 561             isFound = aSelObject == *aResIt;
 562           }
 563         }
 564       }
 565       if (isFound) {
 566         std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
 567         theError = "The object %1 is a result of copy";
 568         theError.arg(aName);
 569         return false;
 570       }
 571     }
 572   }
 573   return true;
 574 }
 575
 576 bool SketchPlugin_SolverErrorValidator::isValid(
 577   const std::shared_ptr<ModelAPI_Feature>& theFeature,
 578   const std::list<std::string>& theArguments,
 579   Events_InfoMessage& theError) const
 580 {
 581   AttributeStringPtr aAttributeString = theFeature->string(SketchPlugin_Sketch::SOLVER_ERROR());
 582
 583   if (!aAttributeString->value().empty()) {
 584     theError = aAttributeString->value();
 585     return false;
 586   }
 587
 588   return true;
 589 }
 590
 591 bool SketchPlugin_SolverErrorValidator::isNotObligatory(std::string theFeature,
 592                                                         std::string theAttribute)
 593 {
 594   return true;
 595 }
 596
 597 static bool hasSameTangentFeature(const std::set<AttributePtr>& theRefsList,
 598                                   const FeaturePtr theFeature)
 599 {
 600   for(std::set<AttributePtr>::const_iterator
 601       anIt = theRefsList.cbegin(); anIt != theRefsList.cend(); ++anIt) {
 602     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 603     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 604     if (!aFeature)
 605       continue;
 606     if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 607       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 608         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
 609       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 610         aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
 611       if(anAttrRefA.get()) {
 612         ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
 613         if(aResA.get()) {
 614           DocumentPtr aDoc = aResA->document();
 615           if(aDoc.get()) {
 616             FeaturePtr aFeatureA = aDoc->feature(aResA);
 617             if(aFeatureA.get() && aFeatureA == theFeature) {
 618               return true;
 619             }
 620           }
 621         }
 622       }
 623       if(anAttrRefB.get()) {
 624         ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
 625         if(aResB.get()) {
 626           DocumentPtr aDoc = aResB->document();
 627           if(aDoc.get()) {
 628             FeaturePtr aFeatureB = aDoc->feature(aResB);
 629             if(aFeatureB.get() && aFeatureB == theFeature) {
 630               return true;
 631             }
 632           }
 633         }
 634       }
 635     }
 636   }
 637   return false;
 638 }
 639
 640 static bool isPointPointCoincidence(const FeaturePtr& theCoincidence)
 641 {
 642   AttributeRefAttrPtr aRefAttr[2] = {
 643       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_A()),
 644       theCoincidence->refattr(SketchPlugin_Constraint::ENTITY_B())
 645   };
 646
 647   bool arePoints = true;
 648   for (int i = 0; i < 2 && arePoints; ++i) {
 649     if (aRefAttr[i]->isObject()) {
 650       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr[i]->object());
 651       arePoints = aFeature.get() && aFeature->getKind() == SketchPlugin_Point::ID();
 652     } else
 653       arePoints = aRefAttr[i]->attr().get() != NULL;
 654   }
 655   return arePoints;
 656 }
 657
 658 bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
 659                                                  const std::list<std::string>& theArguments,
 660                                                  Events_InfoMessage& theError) const
 661 {
 662   AttributeRefAttrPtr aPointRefAttr =
 663     std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 664   if(!aPointRefAttr.get()) {
 665     theError = "Error: Point not selected.";
 666     return false;
 667   }
 668
 669   AttributePtr aPointAttribute = aPointRefAttr->attr();
 670   if (!aPointAttribute.get()) {
 671     theError = "Error: Bad point selected.";
 672     return false;
 673   }
 674   std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt =
 675     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
 676
 677   // Obtain constraint coincidence for the fillet point.
 678   const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
 679   FeaturePtr aConstraintCoincidence;
 680   for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin();
 681       anIt != aRefsList.cend(); ++anIt) {
 682     std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
 683     FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
 684     if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
 685       if (!isPointPointCoincidence(aConstrFeature))
 686         continue;
 687
 688       AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 689         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
 690       AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 691         aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
 692
 693       AttributePtr anAttrA = anAttrRefA->attr();
 694       if(aPointAttribute == anAttrA) {
 695         aConstraintCoincidence = aConstrFeature;
 696         break;
 697       }
 698
 699       AttributePtr anAttrB = anAttrRefB->attr();
 700       if(aPointAttribute == anAttrB) {
 701         aConstraintCoincidence = aConstrFeature;
 702         break;
 703       }
 704     }
 705   }
 706
 707   if(!aConstraintCoincidence.get()) {
 708     theError = "Error: one of the selected point does not have coincidence.";
 709     return false;
 710   }
 711
 712   // Get coincides from constraint.
 713   std::set<FeaturePtr> aCoinsides;
 714   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 715                                         SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 716                                         aCoinsides,
 717                                         true);
 718   SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
 719                                         SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 720                                         aCoinsides,
 721                                         true);
 722
 723   // Remove points and external lines from set of coincides.
 724   std::set<FeaturePtr> aNewSetOfCoincides;
 725   for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 726       anIt != aCoinsides.end(); ++anIt) {
 727     std::shared_ptr<SketchPlugin_SketchEntity> aSketchEntity =
 728       std::dynamic_pointer_cast<SketchPlugin_SketchEntity>(*anIt);
 729     if(aSketchEntity.get() && (aSketchEntity->isCopy() || aSketchEntity->isExternal())) {
 730       continue;
 731     }
 732     if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
 733         (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
 734           continue;
 735     }
 736     if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
 737       AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
 738       std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt =
 739         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
 740       double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
 741       if(aDistSelectedArcCenter < tolerance) {
 742         continue;
 743       }
 744     }
 745     aNewSetOfCoincides.insert(*anIt);
 746   }
 747   aCoinsides = aNewSetOfCoincides;
 748
 749   // If we still have more than two coincides remove auxilary entities from set of coincides.
 750   if(aCoinsides.size() > 2) {
 751     aNewSetOfCoincides.clear();
 752     for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 753         anIt != aCoinsides.end(); ++anIt) {
 754       if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
 755         aNewSetOfCoincides.insert(*anIt);
 756       }
 757     }
 758     aCoinsides = aNewSetOfCoincides;
 759   }
 760
 761   if(aCoinsides.size() != 2) {
 762     theError = "Error: One of the selected points does not have two suitable edges for fillet.";
 763     return false;
 764   }
 765
 766   // Check that selected edges don't have tangent constraint.
 767   std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
 768   FeaturePtr aFirstFeature = *anIt++;
 769   FeaturePtr aSecondFeature = *anIt;
 770   const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
 771   if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
 772     theError = "Error: Edges in selected point has tangent constraint.";
 773     return false;
 774   }
 775
 776   std::list<ResultPtr> aFirstResults = aFirstFeature->results();
 777   for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin();
 778       aResIt != aFirstResults.end(); ++aResIt) {
 779     ResultPtr aRes = *aResIt;
 780     const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
 781     if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
 782       theError = "Error: Edges in selected point has tangent constraint.";
 783       return false;
 784     }
 785   }
 786
 787   // Check the features are not tangent
 788   std::shared_ptr<GeomAPI_Shape> aFirstShape = aFirstFeature->lastResult()->shape();
 789   std::shared_ptr<GeomAPI_Shape> aSecondShape = aSecondFeature->lastResult()->shape();
 790   if (!aFirstShape || !aFirstShape->isEdge() ||
 791       !aSecondShape || !aSecondShape->isEdge()) {
 792     theError = "Error: At least on of the features is not an edge";
 793     return false;
 794   }
 795
 796   std::shared_ptr<GeomAPI_Edge> anEdge1 = std::dynamic_pointer_cast<GeomAPI_Edge>(aFirstShape);
 797   std::shared_ptr<GeomAPI_Edge> anEdge2 = std::dynamic_pointer_cast<GeomAPI_Edge>(aSecondShape);
 798
 799   static const double TOL = 1.e-7;
 800   if (anEdge1->isLine() && anEdge2->isLine()) {
 801     // Check that lines not collinear
 802     std::shared_ptr<GeomAPI_Dir> aDir1 = anEdge1->line()->direction();
 803     std::shared_ptr<GeomAPI_Dir> aDir2 = anEdge2->line()->direction();
 804     double aCross = aDir1->cross(aDir2)->squareModulus();
 805     if (aCross < TOL * TOL)
 806       return false;
 807   } else if (anEdge1->isArc() && anEdge2->isArc()) {
 808     // check the circles are not tangent
 809     std::shared_ptr<GeomAPI_Circ> aCirc1 = anEdge1->circle();
 810     std::shared_ptr<GeomAPI_Circ> aCirc2 = anEdge2->circle();
 811     double aDistCC = aCirc1->center()->distance(aCirc2->center());
 812     double aRadSum = aCirc1->radius() + aCirc2->radius();
 813     double aRadDiff = fabs(aCirc1->radius() - aCirc2->radius());
 814     if (fabs(aDistCC - aRadSum) < TOL || fabs(aDistCC - aRadDiff) < TOL)
 815       return false;
 816   } else {
 817     // check whether line and arc are tangent
 818     std::shared_ptr<GeomAPI_Circ> aCirc;
 819     std::shared_ptr<GeomAPI_Lin> aLine;
 820     if (anEdge1->isLine()) {
 821       aLine = anEdge1->line();
 822       aCirc = anEdge2->circle();
 823     } else {
 824       aCirc = anEdge1->circle();
 825       aLine = anEdge2->line();
 826     }
 827
 828     double aDistCL = aLine->distance(aCirc->center());
 829     if (fabs(aDistCL - aCirc->radius()) < TOL)
 830       return false;
 831   }
 832
 833   return true;
 834 }
 835
 836 bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
 837                                                     const std::list<std::string>& theArguments,
 838                                                     Events_InfoMessage& theError) const
 839 {
 840   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 841     theError = "The attribute with the %1 type is not processed";
 842     theError.arg(theAttribute->attributeType());
 843     return false;
 844   }
 845
 846   // there is a check whether the feature contains a point and a linear edge or two point values
 847   std::string aParamA = theArguments.front();
 848
 849   FeaturePtr anAttributeFeature =
 850     std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 851   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 852   AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
 853
 854   AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
 855   int aNbPoints = 0;
 856   int aNbLines = 0;
 857   for (int i = 0; i < 2; ++i) {
 858     if (!aRefAttrs[i]->isObject())
 859       ++aNbPoints;
 860     else {
 861       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
 862       if (!aFeature) {
 863         if (aNbPoints + aNbLines != 0)
 864           return true;
 865         else continue;
 866       }
 867
 868       if (aFeature->getKind() == SketchPlugin_Point::ID())
 869         ++aNbPoints;
 870       else if (aFeature->getKind() == SketchPlugin_Line::ID() ||
 871                aFeature->getKind() == SketchPlugin_Arc::ID() ||
 872                aFeature->getKind() == SketchPlugin_EllipticArc::ID())
 873         ++aNbLines;
 874     }
 875   }
 876
 877   if (aNbPoints != 1 || aNbLines != 1) {
 878     theError = "Middle point constraint allows points and lines only";
 879     return false;
 880   }
 881   return true;
 882 }
 883
 884 bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
 885                                                     const std::list<std::string>& /*theArguments*/,
 886                                                     Events_InfoMessage& theError) const
 887 {
 888   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 889     theError = "The attribute with the %1 type is not processed";
 890     theError.arg(theAttribute->attributeType());
 891     return false;
 892   }
 893   FeaturePtr anOwner = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 894   AttributeStringPtr anArcTypeAttr = anOwner->string(SketchPlugin_MacroArc::ARC_TYPE());
 895   if (anArcTypeAttr && anArcTypeAttr->value() != SketchPlugin_MacroArc::ARC_TYPE_BY_TANGENT_EDGE())
 896     return true; // not applicable for non-tangent arcs
 897
 898   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 899   AttributePtr anAttr = aRefAttr->attr();
 900   if (!anAttr) {
 901     theError = "The attribute %1 should be a point";
 902     theError.arg(theAttribute->id());
 903     return false;
 904   }
 905
 906   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 907   const std::string& aFeatureType = anAttrFeature->getKind();
 908   if (aFeatureType == SketchPlugin_Arc::ID()) {
 909     // selected point should not be a center of arc
 910     const std::string& aPntId = anAttr->id();
 911     if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
 912       theError = "The attribute %1 is not supported";
 913       theError.arg(aPntId);
 914       return false;
 915     }
 916   }
 917   else if (aFeatureType == SketchPlugin_Line::ID()) {
 918     // selected point should be bound point of line
 919     const std::string& aPntId = anAttr->id();
 920     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 921       theError = "The attribute %1 is not supported";
 922       theError.arg(aPntId);
 923       return false;
 924     }
 925   }
 926   else {
 927     theError = "Unable to build tangent arc on %1";
 928     theError.arg(anAttrFeature->getKind());
 929     return false;
 930   }
 931
 932   return true;
 933 }
 934
 935 bool SketchPlugin_ArcTransversalPointValidator::isValid(
 936     const AttributePtr& theAttribute,
 937     const std::list<std::string>& /*theArguments*/,
 938     Events_InfoMessage& theError) const
 939 {
 940   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
 941     theError = "The attribute with the %1 type is not processed";
 942     theError.arg(theAttribute->attributeType());
 943     return false;
 944   }
 945   FeaturePtr anOwner = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
 946   AttributeStringPtr anArcTypeAttr = anOwner->string(SketchPlugin_MacroArc::ARC_TYPE());
 947   if (anArcTypeAttr &&
 948       anArcTypeAttr->value() != SketchPlugin_MacroArc::ARC_TYPE_BY_TRANSVERSAL_LINE())
 949     return true; // not applicable for non-transversal arcs
 950
 951   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 952   AttributePtr anAttr = aRefAttr->attr();
 953   if (!anAttr) {
 954     theError = "The attribute %1 should be a point";
 955     theError.arg(theAttribute->id());
 956     return false;
 957   }
 958
 959   FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
 960   const std::string& aFeatureType = anAttrFeature->getKind();
 961   if (aFeatureType == SketchPlugin_Line::ID()) {
 962     // selected point should be bound point of line
 963     const std::string& aPntId = anAttr->id();
 964     if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
 965       theError = "The attribute %1 is not supported";
 966       theError.arg(aPntId);
 967       return false;
 968     }
 969   }
 970   else {
 971     theError = "Unable to build perpendicular arc on %1";
 972     theError.arg(anAttrFeature->getKind());
 973     return false;
 974   }
 975
 976   return true;
 977 }
 978
 979 bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
 980                                                  const std::list<std::string>& theArguments,
 981                                                  Events_InfoMessage& theError) const
 982 {
 983   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
 984     theError = "The attribute with the %1 type is not processed";
 985     theError.arg(theAttribute->attributeType());
 986     return false;
 987   }
 988   AttributeSelectionPtr anExternalAttr =
 989       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 990   std::shared_ptr<GeomAPI_Edge> anEdge;
 991   if (anExternalAttr && anExternalAttr->value() && anExternalAttr->value()->isEdge()) {
 992     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(anExternalAttr->value()));
 993   } else if(anExternalAttr->context() && anExternalAttr->context()->shape() &&
 994             anExternalAttr->context()->shape()->isEdge()) {
 995     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(anExternalAttr->context()->shape()));
 996   }
 997
 998   if (!anEdge) {
 999     theError = "The attribute %1 should be an edge";
1000     theError.arg(theAttribute->id());
1001     return false;
1002   }
1003
1004   // find a sketch
1005   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1006   std::set<AttributePtr> aRefs = anExternalAttr->owner()->data()->refsToMe();
1007   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1008   for (; anIt != aRefs.end(); ++anIt) {
1009     CompositeFeaturePtr aComp =
1010         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1011     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1012       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1013       break;
1014     }
1015   }
1016   if (!aSketch) {
1017     theError = "There is no sketch referring to the current feature";
1018     return false;
1019   }
1020
1021   // check the edge is intersected with sketch plane
1022   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1023
1024   std::list<GeomPointPtr> anIntersectionsPoints;
1025   anEdge->intersectWithPlane(aPlane, anIntersectionsPoints);
1026   if (anIntersectionsPoints.empty()) {
1027     theError = "The edge is not intersected with sketch plane";
1028     return false;
1029   }
1030   return true;
1031 }
1032
1033 bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
1034                                           const std::list<std::string>& theArguments,
1035                                           Events_InfoMessage& theError) const
1036 {
1037   bool aValid = false;
1038
1039   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
1040     theError = "The attribute with the %1 type is not processed";
1041     theError.arg(theAttribute->attributeType());
1042     return aValid;
1043   }
1044   AttributeReferencePtr aFeatureAttr =
1045             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
1046   std::shared_ptr<SketchPlugin_Feature> aSplitFeature =
1047     std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
1048
1049   ObjectPtr anAttrObject = aFeatureAttr->value();
1050   if (!anAttrObject) {
1051     AttributePtr aPreviewAttr = aSplitFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
1052     aFeatureAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
1053     anAttrObject = aFeatureAttr->value();
1054   }
1055
1056   FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
1057   if (!anAttrFeature)
1058     return aValid;
1059
1060   // B-splines are not supported by the Split yet
1061   if (anAttrFeature->getKind() == SketchPlugin_BSpline::ID() ||
1062       anAttrFeature->getKind() == SketchPlugin_BSplinePeriodic::ID()) {
1063     theError = "Not supported";
1064     return false;
1065   }
1066
1067   std::set<ResultPtr> anEdgeShapes;
1068   ModelGeomAlgo_Shape::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
1069   if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
1070     return aValid;
1071
1072   // coincidences to the feature
1073   std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
1074   ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature,
1075                       SketchPlugin_ConstraintCoincidence::ID(),
1076                       aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
1077
1078   GeomShapePtr anAttrShape = (*anEdgeShapes.begin())->shape();
1079   std::shared_ptr<SketchPlugin_Feature> aSFeature =
1080                                 std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
1081   if (!aSFeature || aSFeature->isCopy())
1082     return false;
1083   SketchPlugin_Sketch* aSketch = aSFeature->sketch();
1084
1085   std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
1086   std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
1087       aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
1088   std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
1089       aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
1090   std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
1091       aData->attribute(SketchPlugin_Sketch::NORM_ID()));
1092   std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
1093
1094   typedef std::map<std::shared_ptr<GeomAPI_Pnt>,
1095                     std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
1096                               std::list<std::shared_ptr<ModelAPI_Object> > > > PointToRefsMap;
1097   PointToRefsMap aPointsInfo;
1098
1099   ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
1100                                               aX->dir(), aDirY, aPointsInfo);
1101   int aCoincidentToFeature = (int)aPointsInfo.size();
1102   if (anAttrFeature->getKind() == SketchPlugin_Circle::ID() ||
1103       anAttrFeature->getKind() == SketchPlugin_Ellipse::ID())
1104     aValid = aCoincidentToFeature >= 2;
1105   else
1106     aValid = aCoincidentToFeature >= 1;
1107
1108   return aValid;
1109 }
1110
1111 bool SketchPlugin_TrimValidator::isValid(const AttributePtr& theAttribute,
1112                                          const std::list<std::string>& theArguments,
1113                                          Events_InfoMessage& theError) const
1114 {
1115   bool aValid = false;
1116
1117   if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
1118     theError = "The attribute with the %1 type is not processed";
1119     theError.arg(theAttribute->attributeType());
1120     return aValid;
1121   }
1122   AttributeReferencePtr aBaseObjectAttr =
1123             std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
1124
1125   std::shared_ptr<SketchPlugin_Feature> aTrimFeature =
1126                  std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
1127
1128   ObjectPtr aBaseObject = aBaseObjectAttr->value();
1129   if (!aBaseObject) {
1130     AttributePtr aPreviewAttr = aTrimFeature->attribute(SketchPlugin_Trim::PREVIEW_OBJECT());
1131     aBaseObjectAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(aPreviewAttr);
1132     aBaseObject = aBaseObjectAttr->value();
1133   }
1134
1135   FeaturePtr aBaseFeature = ModelAPI_Feature::feature(aBaseObject);
1136   if (!aBaseFeature)
1137     return aValid;
1138
1139   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1140                                  std::dynamic_pointer_cast<SketchPlugin_Feature>(aBaseFeature);
1141   if (!aSketchFeature.get() || aSketchFeature->isCopy())
1142     return aValid;
1143
1144   // B-splines are not supported by the Trim yet
1145   if (aBaseFeature->getKind() == SketchPlugin_BSpline::ID() ||
1146       aBaseFeature->getKind() == SketchPlugin_BSplinePeriodic::ID()) {
1147     theError = "Not supported";
1148     return false;
1149   }
1150
1151   // point on feature
1152   AttributePoint2DPtr aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1153                        aTrimFeature->data()->attribute(SketchPlugin_Trim::PREVIEW_POINT()));
1154
1155   SketchPlugin_Sketch* aSketch = aTrimFeature->sketch();
1156
1157   std::shared_ptr<GeomAPI_Pnt2d> anAttributePnt2d = aPoint->pnt();
1158   std::shared_ptr<GeomAPI_Pnt> anAttributePnt = aSketch->to3D(anAttributePnt2d->x(),
1159                                                               anAttributePnt2d->y());
1160
1161   std::map<ObjectPtr, std::set<GeomShapePtr> > aCashedShapes;
1162   std::map<ObjectPtr, std::map<std::shared_ptr<GeomAPI_Pnt>,
1163            std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
1164                      std::list<std::shared_ptr<ModelAPI_Object> > > > > anObjectToPoints;
1165   SketchPlugin_SegmentationTools::fillObjectShapes(
1166       aTrimFeature.get(), aBaseObject, aCashedShapes, anObjectToPoints);
1167   const std::set<GeomShapePtr>& aShapes = aCashedShapes[aBaseObject];
1168
1169   return aShapes.size() > 1;
1170 }
1171
1172 bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
1173                                                const std::list<std::string>& theArguments,
1174                                                Events_InfoMessage& theError) const
1175 {
1176   if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
1177     theError = "The attribute with the %1 type is not processed";
1178     theError.arg(theAttribute->attributeType());
1179     return false;
1180   }
1181
1182   AttributeSelectionPtr aFeatureAttr =
1183       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
1184   std::shared_ptr<GeomAPI_Vertex> aVertex;
1185   std::shared_ptr<GeomAPI_Edge> anEdge;
1186   std::shared_ptr<SketchPlugin_Feature> aSketchFeature;
1187   if (aFeatureAttr.get()) {
1188     GeomShapePtr aVal = aFeatureAttr->value();
1189     ResultPtr aRes = aFeatureAttr->context();
1190     if (aVal && aVal->isVertex())
1191       aVertex = std::shared_ptr<GeomAPI_Vertex>(new GeomAPI_Vertex(aVal));
1192     else if (aVal && aVal->isEdge()) {
1193       anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aVal));
1194     } else if(aRes && aRes->shape()) {
1195       if (aRes->shape()->isVertex())
1196         aVertex = std::shared_ptr<GeomAPI_Vertex>(new GeomAPI_Vertex(aRes->shape()));
1197       else if (aRes->shape()->isEdge())
1198         anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aRes->shape()));
1199     }
1200
1201     // try to convert result to sketch feature
1202     if (aRes) {
1203       aSketchFeature =
1204         std::dynamic_pointer_cast<SketchPlugin_Feature>(ModelAPI_Feature::feature(aRes));
1205     }
1206   }
1207   if (!aVertex && !anEdge) {
1208     theError = "The attribute %1 should be an edge or vertex";
1209     theError.arg(theAttribute->id());
1210     return false;
1211   }
1212
1213   // find a sketch
1214   std::shared_ptr<SketchPlugin_Sketch> aSketch;
1215   std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
1216   std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
1217   for (; anIt != aRefs.end(); ++anIt) {
1218     CompositeFeaturePtr aComp =
1219         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
1220     if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
1221       aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
1222       break;
1223     }
1224   }
1225   if (!aSketch) {
1226     theError = "There is no sketch referring to the current feature";
1227     return false;
1228   }
1229   if (aSketchFeature && aSketch.get() == aSketchFeature->sketch()) {
1230     theError = "Unable to project feature from the same sketch";
1231     return false;
1232   }
1233
1234   std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
1235   std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
1236   std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
1237
1238   bool aValid = true;
1239   if (aVertex)
1240     aValid = true; // vertex is always could be projected
1241   else if (anEdge->isLine()) {
1242     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1243     std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
1244     double aDot = fabs(aNormal->dot(aLineDir));
1245     aValid = fabs(aDot - 1.0) >= tolerance * tolerance;
1246     if (!aValid)
1247       theError = "Error: Line is orthogonal to the sketch plane.";
1248   }
1249   else if (anEdge->isCircle() || anEdge->isArc()) {
1250     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1251     std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
1252     double aDot = fabs(aNormal->dot(aCircNormal));
1253     aValid = aDot >= tolerance * tolerance;
1254     if (!aValid)
1255       theError.arg(anEdge->isCircle() ? "Error: Circle is orthogonal to the sketch plane."
1256                                       : "Error: Arc is orthogonal to the sketch plane.");
1257   }
1258   else if (anEdge->isEllipse()) {
1259     std::shared_ptr<GeomAPI_Ellipse> anEllipse = anEdge->ellipse();
1260     std::shared_ptr<GeomAPI_Dir> anEllipseNormal = anEllipse->normal();
1261     double aDot = fabs(aNormal->dot(anEllipseNormal));
1262     aValid = aDot >= tolerance * tolerance;
1263     if (!aValid)
1264       theError.arg(anEdge->isClosed() ? "Error: Ellipse is orthogonal to the sketch plane."
1265                                       : "Error: Elliptic Arc is orthogonal to the sketch plane.");
1266   }
1267
1268   return aValid;
1269 }
1270
1271
1272 static std::set<FeaturePtr> common(const std::set<FeaturePtr>& theSet1,
1273                                    const std::set<FeaturePtr>& theSet2)
1274 {
1275   std::set<FeaturePtr> aCommon;
1276   if (theSet1.empty() || theSet2.empty())
1277     return aCommon;
1278
1279   std::set<FeaturePtr>::const_iterator anIt2 = theSet2.begin();
1280   for (; anIt2 != theSet2.end(); ++anIt2)
1281     if (theSet1.find(*anIt2) != theSet1.end())
1282       aCommon.insert(*anIt2);
1283   return aCommon;
1284 }
1285
1286 bool SketchPlugin_DifferentReferenceValidator::isValid(
1287     const AttributePtr& theAttribute,
1288     const std::list<std::string>& theArguments,
1289     Events_InfoMessage& theError) const
1290 {
1291   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1292
1293   int aNbFeaturesReferred = 0;
1294   int aNbAttributesReferred = 0;
1295   std::set<FeaturePtr> aCommonReferredFeatures;
1296
1297   // find all features referred by attributes listed in theArguments
1298   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1299   for (; anArgIt != theArguments.end(); ++anArgIt) {
1300     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1301     if (!aRefAttr)
1302       continue;
1303
1304     std::set<FeaturePtr> aCoincidentFeatures;
1305     if (aRefAttr->isObject()) {
1306       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1307       if (aFeature) {
1308         aCoincidentFeatures.insert(aFeature);
1309         aNbFeaturesReferred += 1;
1310       }
1311     } else {
1312       AttributePoint2DPtr aPoint =
1313           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1314       if (aPoint) {
1315         aCoincidentFeatures = SketchPlugin_Tools::findFeaturesCoincidentToPoint(aPoint);
1316         aNbAttributesReferred += 1;
1317       }
1318     }
1319
1320     if (aCommonReferredFeatures.empty())
1321       aCommonReferredFeatures = aCoincidentFeatures;
1322     else
1323       aCommonReferredFeatures = common(aCommonReferredFeatures, aCoincidentFeatures);
1324
1325     if (aCommonReferredFeatures.empty())
1326       return true;
1327   }
1328
1329   bool isOk = aNbFeaturesReferred < 1;
1330   if (aNbFeaturesReferred == 1) {
1331     if (aCommonReferredFeatures.size() == 1) {
1332       FeaturePtr aFeature = *aCommonReferredFeatures.begin();
1333       isOk = aNbAttributesReferred <= 1 ||
1334              aFeature->getKind() == SketchPlugin_Circle::ID() ||
1335              aFeature->getKind() == SketchPlugin_Arc::ID();
1336     } else
1337       isOk = false;
1338   }
1339
1340   if (!isOk)
1341     theError = "Attributes are referred to the same feature";
1342   return isOk;
1343 }
1344
1345 bool SketchPlugin_DifferentPointReferenceValidator::isValid(
1346     const AttributePtr& theAttribute,
1347     const std::list<std::string>& theArguments,
1348     Events_InfoMessage& theError) const
1349 {
1350   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1351   std::set<AttributePoint2DPtr> aReferredCoincidentPoints;
1352
1353   // find all points referred by attributes listed in theArguments
1354   bool hasRefsToPoints = false;
1355   std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1356   for (; anArgIt != theArguments.end(); ++anArgIt) {
1357     AttributeRefAttrPtr aRefAttr = anOwner->refattr(*anArgIt);
1358     if (!aRefAttr)
1359       continue;
1360
1361     if (!aRefAttr->isObject()) {
1362       AttributePoint2DPtr aPoint =
1363           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1364       if (aReferredCoincidentPoints.empty())
1365         aReferredCoincidentPoints = SketchPlugin_Tools::findPointsCoincidentToPoint(aPoint);
1366       else if (aReferredCoincidentPoints.find(aPoint) == aReferredCoincidentPoints.end())
1367         return true; // non-coincident point has been found
1368       else
1369         hasRefsToPoints = true;
1370     }
1371   }
1372
1373   if (hasRefsToPoints)
1374     theError = "Attributes are referred to the same point";
1375   return !hasRefsToPoints;
1376 }
1377
1378 bool SketchPlugin_CirclePassedPointValidator::isValid(
1379     const AttributePtr& theAttribute,
1380     const std::list<std::string>&,
1381     Events_InfoMessage& theError) const
1382 {
1383   static const std::string aErrorMessage(
1384       "Passed point refers to the same feature as a center point");
1385
1386   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1387
1388   AttributeRefAttrPtr aCenterRef =
1389       anOwner->refattr(SketchPlugin_MacroCircle::CENTER_POINT_REF_ID());
1390   AttributeRefAttrPtr aPassedRef =
1391       anOwner->refattr(SketchPlugin_MacroCircle::PASSED_POINT_REF_ID());
1392
1393   if (!aPassedRef->isObject())
1394     return true;
1395
1396   FeaturePtr aPassedFeature = ModelAPI_Feature::feature(aPassedRef->object());
1397   if (!aPassedFeature)
1398     return true;
1399
1400   if (aCenterRef->isObject()) {
1401     if (aCenterRef->object() == aPassedRef->object()) {
1402       theError = aErrorMessage;
1403       return false;
1404     }
1405   } else {
1406     AttributePoint2DPtr aCenterPoint =
1407         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aCenterRef->attr());
1408     if (aCenterPoint) {
1409       std::set<FeaturePtr> aCoincidentFeatures =
1410           SketchPlugin_Tools::findFeaturesCoincidentToPoint(aCenterPoint);
1411       // check one of coincident features is a feature referred by passed point
1412       std::set<FeaturePtr>::const_iterator anIt = aCoincidentFeatures.begin();
1413       for(; anIt != aCoincidentFeatures.end(); ++anIt)
1414         if (*anIt == aPassedFeature) {
1415           theError = aErrorMessage;
1416           return false;
1417         }
1418     }
1419   }
1420   return true;
1421 }
1422
1423 bool SketchPlugin_ThirdPointValidator::isValid(
1424     const AttributePtr& theAttribute,
1425     const std::list<std::string>& theArguments,
1426     Events_InfoMessage& theError) const
1427 {
1428   FeaturePtr anOwner = ModelAPI_Feature::feature(theAttribute->owner());
1429   return arePointsNotOnLine(anOwner, theError) &&
1430          arePointsNotSeparated(anOwner, theArguments, theError);
1431 }
1432
1433 static std::shared_ptr<GeomAPI_Pnt2d> toPoint(const FeaturePtr& theMacroCircle,
1434                                               const std::string& thePointAttrName,
1435                                               const std::string& theRefPointAttrName)
1436 {
1437   AttributePoint2DPtr aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
1438       theMacroCircle->attribute(thePointAttrName));
1439   AttributeRefAttrPtr aRefAttr = theMacroCircle->refattr(theRefPointAttrName);
1440
1441   std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointAttr->pnt();
1442   if (aRefAttr) {
1443     if (aRefAttr->isObject()) {
1444       // project a point onto selected feature
1445       std::shared_ptr<SketchPlugin_Feature> aFeature =
1446           std::dynamic_pointer_cast<SketchPlugin_Feature>(
1447           ModelAPI_Feature::feature(aRefAttr->object()));
1448       if (aFeature) {
1449         SketchPlugin_Sketch* aSketch = aFeature->sketch();
1450         std::shared_ptr<GeomAPI_Edge> anEdge =
1451             std::dynamic_pointer_cast<GeomAPI_Edge>(aFeature->lastResult()->shape());
1452         if (anEdge) {
1453           std::shared_ptr<GeomAPI_Pnt> aPoint3D = aSketch->to3D(aPoint->x(), aPoint->y());
1454           if (anEdge->isLine())
1455             aPoint3D = anEdge->line()->project(aPoint3D);
1456           else if (anEdge->isCircle())
1457             aPoint3D = anEdge->circle()->project(aPoint3D);
1458           if(aPoint3D)
1459             aPoint = aSketch->to2D(aPoint3D);
1460         }
1461       }
1462     } else {
1463       AttributePoint2DPtr anOtherPoint =
1464           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
1465       if (anOtherPoint)
1466         aPoint = anOtherPoint->pnt(); // the reference point is much more precise, use it
1467     }
1468   }
1469
1470   return aPoint;
1471 }
1472
1473 static void threePointsOfFeature(const FeaturePtr& theMacroFeature,
1474                                  std::shared_ptr<GeomAPI_Pnt2d> thePoints[3])
1475 {
1476   if (theMacroFeature->getKind() == SketchPlugin_MacroCircle::ID()) {
1477     thePoints[0] = toPoint(theMacroFeature,
1478           SketchPlugin_MacroCircle::FIRST_POINT_ID(),
1479           SketchPlugin_MacroCircle::FIRST_POINT_REF_ID());
1480     thePoints[1] = toPoint(theMacroFeature,
1481           SketchPlugin_MacroCircle::SECOND_POINT_ID(),
1482           SketchPlugin_MacroCircle::SECOND_POINT_REF_ID());
1483     thePoints[2] = toPoint(theMacroFeature,
1484           SketchPlugin_MacroCircle::THIRD_POINT_ID(),
1485           SketchPlugin_MacroCircle::THIRD_POINT_REF_ID());
1486   } else if (theMacroFeature->getKind() == SketchPlugin_MacroArc::ID()) {
1487     thePoints[0] = toPoint(theMacroFeature,
1488           SketchPlugin_MacroArc::START_POINT_2_ID(),
1489           SketchPlugin_MacroArc::START_POINT_REF_ID());
1490     thePoints[1] = toPoint(theMacroFeature,
1491           SketchPlugin_MacroArc::END_POINT_2_ID(),
1492           SketchPlugin_MacroArc::END_POINT_REF_ID());
1493     thePoints[2] = toPoint(theMacroFeature,
1494           SketchPlugin_MacroArc::PASSED_POINT_ID(),
1495           SketchPlugin_MacroArc::PASSED_POINT_REF_ID());
1496   }
1497 }
1498
1499 static bool isPointsOnLine(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint1,
1500                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint2,
1501                            const std::shared_ptr<GeomAPI_Pnt2d>& thePoint3)
1502 {
1503   static const double aTolerance = 1.e-7;
1504   if (thePoint1->distance(thePoint2) < aTolerance ||
1505       thePoint1->distance(thePoint3) < aTolerance)
1506     return true;
1507
1508   std::shared_ptr<GeomAPI_Dir2d> aDirP1P2(new GeomAPI_Dir2d(thePoint2->x() - thePoint1->x(),
1509                                                             thePoint2->y() - thePoint1->y()));
1510   std::shared_ptr<GeomAPI_Dir2d> aDirP1P3(new GeomAPI_Dir2d(thePoint3->x() - thePoint1->x(),
1511                                                             thePoint3->y() - thePoint1->y()));
1512   return fabs(aDirP1P2->cross(aDirP1P3)) < aTolerance;
1513 }
1514
1515 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Lin>& theLine,
1516                          const std::shared_ptr<GeomAPI_Pnt>& thePoint1,
1517                          const std::shared_ptr<GeomAPI_Pnt>& thePoint2)
1518 {
1519   static const double aTolerance = 1.e-7;
1520   std::shared_ptr<GeomAPI_Dir> aLineDir = theLine->direction();
1521   std::shared_ptr<GeomAPI_XYZ> aLineLoc = theLine->location()->xyz();
1522
1523   std::shared_ptr<GeomAPI_XYZ> aVec1 = thePoint1->xyz()->decreased(aLineLoc);
1524   // the first point is on the line
1525   if (aVec1->squareModulus() < aTolerance * aTolerance)
1526     return false;
1527   std::shared_ptr<GeomAPI_Dir> aDirP1L(new GeomAPI_Dir(aVec1));
1528   std::shared_ptr<GeomAPI_XYZ> aVec2 = thePoint2->xyz()->decreased(aLineLoc);
1529   // the second point is on the line
1530   if (aVec2->squareModulus() < aTolerance * aTolerance)
1531     return false;
1532   std::shared_ptr<GeomAPI_Dir> aDirP2L(new GeomAPI_Dir(aVec2));
1533
1534   return aLineDir->cross(aDirP1L)->dot(aLineDir->cross(aDirP2L)) > -aTolerance;
1535 }
1536
1537 static bool isOnSameSide(const std::shared_ptr<GeomAPI_Circ>& theCircle,
1538                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint1,
1539                          const std::shared_ptr<GeomAPI_Pnt>&  thePoint2)
1540 {
1541   static const double aTolerance = 1.e-7;
1542   std::shared_ptr<GeomAPI_Pnt> aCenter = theCircle->center();
1543   double aDistP1C = thePoint1->distance(aCenter);
1544   double aDistP2C = thePoint2->distance(aCenter);
1545   return (aDistP1C - theCircle->radius()) * (aDistP2C - theCircle->radius()) > -aTolerance;
1546 }
1547
1548 bool SketchPlugin_ThirdPointValidator::arePointsNotOnLine(
1549     const FeaturePtr& theMacroFeature,
1550     Events_InfoMessage& theError) const
1551 {
1552   static const std::string aErrorPointsOnLine(
1553       "Selected points are on the same line");
1554
1555   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1556   threePointsOfFeature(theMacroFeature, aPoints);
1557
1558   if (isPointsOnLine(aPoints[0], aPoints[1], aPoints[2])) {
1559     theError = aErrorPointsOnLine;
1560     return false;
1561   }
1562   return true;
1563 }
1564
1565 bool SketchPlugin_ThirdPointValidator::arePointsNotSeparated(
1566     const FeaturePtr& theMacroFeature,
1567     const std::list<std::string>& theArguments,
1568     Events_InfoMessage& theError) const
1569 {
1570   static const std::string aErrorPointsApart(
1571       "Selected entity is lying between first two points");
1572
1573   AttributeRefAttrPtr aThirdPointRef = theMacroFeature->refattr(theArguments.front());
1574   FeaturePtr aRefByThird;
1575   if (aThirdPointRef->isObject())
1576     aRefByThird = ModelAPI_Feature::feature(aThirdPointRef->object());
1577   if (!aRefByThird)
1578     return true;
1579
1580   std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
1581   threePointsOfFeature(theMacroFeature, aPoints);
1582
1583   std::shared_ptr<GeomAPI_Edge> aThirdShape =
1584       std::dynamic_pointer_cast<GeomAPI_Edge>(aRefByThird->lastResult()->shape());
1585   if (!aThirdShape)
1586     return true;
1587
1588   SketchPlugin_Sketch* aSketch =
1589       std::dynamic_pointer_cast<SketchPlugin_Feature>(theMacroFeature)->sketch();
1590   std::shared_ptr<GeomAPI_Pnt> aFirstPnt3D = aSketch->to3D(aPoints[0]->x(), aPoints[0]->y());
1591   std::shared_ptr<GeomAPI_Pnt> aSecondPnt3D = aSketch->to3D(aPoints[1]->x(), aPoints[1]->y());
1592
1593   bool isOk = true;
1594   if (aThirdShape->isLine())
1595     isOk = isOnSameSide(aThirdShape->line(), aFirstPnt3D, aSecondPnt3D);
1596   else if (aThirdShape->isCircle() || aThirdShape->isArc())
1597     isOk = isOnSameSide(aThirdShape->circle(), aFirstPnt3D, aSecondPnt3D);
1598
1599   if (!isOk)
1600     theError = aErrorPointsApart;
1601   return isOk;
1602 }
1603
1604 bool SketchPlugin_ArcEndPointValidator::isValid(
1605     const AttributePtr& theAttribute,
1606     const std::list<std::string>& theArguments,
1607     Events_InfoMessage& theError) const
1608 {
1609   FeaturePtr aFeature = ModelAPI_Feature::feature(theAttribute->owner());
1610   AttributeRefAttrPtr anEndPointRef = aFeature->refattr(theArguments.front());
1611
1612   if(!anEndPointRef.get()) {
1613     return true;
1614   }
1615
1616   ObjectPtr anObject = anEndPointRef->object();
1617   AttributePtr anAttr = anEndPointRef->attr();
1618   if(!anObject.get() && !anAttr.get()) {
1619     return true;
1620   }
1621
1622   if(anEndPointRef->attr().get()) {
1623     return false;
1624   }
1625
1626   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1627   if(aResult.get()) {
1628     GeomShapePtr aShape = aResult->shape();
1629     if(aShape.get() && aShape->isVertex()) {
1630       return false;
1631     }
1632   }
1633
1634   aFeature = ModelAPI_Feature::feature(anObject);
1635   if(aFeature.get()) {
1636     if(aFeature->getKind() == SketchPlugin_Point::ID()) {
1637       return false;
1638     }
1639   }
1640
1641   return true;
1642 }
1643
1644 static GeomShapePtr toInfiniteEdge(const GeomShapePtr theShape)
1645 {
1646   if(!theShape.get()) {
1647     return theShape;
1648   }
1649
1650   if(!theShape->isEdge()) {
1651     return theShape;
1652   }
1653
1654   std::shared_ptr<GeomAPI_Edge> anEdge(new GeomAPI_Edge(theShape));
1655
1656   if(!anEdge.get()) {
1657     return theShape;
1658   }
1659
1660   if(anEdge->isLine()) {
1661     std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
1662     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::line(aLine);
1663     return aShape;
1664   }
1665
1666   if(anEdge->isCircle() || anEdge->isArc()) {
1667     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
1668     GeomShapePtr aShape = GeomAlgoAPI_EdgeBuilder::lineCircle(aCircle);
1669     return aShape;
1670   }
1671
1672   return theShape;
1673 }
1674
1675 bool SketchPlugin_ArcEndPointIntersectionValidator::isValid(
1676     const AttributePtr& theAttribute,
1677     const std::list<std::string>& theArguments,
1678     Events_InfoMessage& theError) const
1679 {
1680   std::shared_ptr<SketchPlugin_MacroArc> anArcFeature =
1681       std::dynamic_pointer_cast<SketchPlugin_MacroArc>(theAttribute->owner());
1682   AttributeRefAttrPtr anEndPointRef = anArcFeature->refattr(theArguments.front());
1683
1684   if(!anEndPointRef.get()) {
1685     return true;
1686   }
1687
1688   GeomShapePtr anArcShape = toInfiniteEdge(anArcFeature->getArcShape(false));
1689
1690   if(!anArcShape.get() || anArcShape->isNull()) {
1691     return true;
1692   }
1693
1694   ObjectPtr anObject = anEndPointRef->object();
1695   AttributePtr anAttr = anEndPointRef->attr();
1696   if(!anObject.get() && !anAttr.get()) {
1697     return true;
1698   }
1699
1700   ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(anObject);
1701   if(aResult.get()) {
1702     GeomShapePtr aShape = aResult->shape();
1703     if (!aShape->isEdge())
1704       return true;
1705     aShape = toInfiniteEdge(aShape);
1706     if(aShape.get() && !aShape->isNull()) {
1707       if(anArcShape->isIntersect(aShape)) {
1708         return true;
1709       }
1710     }
1711   }
1712
1713   FeaturePtr aSelectedFeature = ModelAPI_Feature::feature(anObject);
1714   if(aSelectedFeature.get()) {
1715     std::list<ResultPtr> aResults = aSelectedFeature->results();
1716     for(std::list<ResultPtr>::const_iterator anIt = aResults.cbegin();
1717         anIt != aResults.cend();
1718         ++anIt)
1719     {
1720       GeomShapePtr aShape = (*anIt)->shape();
1721       if (!aShape->isEdge())
1722         return true;
1723       aShape = toInfiniteEdge(aShape);
1724       if(aShape.get() && !aShape->isNull()) {
1725         if(anArcShape->isIntersect(aShape)) {
1726           return true;
1727         }
1728       }
1729     }
1730   }
1731
1732   return false;
1733 }
1734
1735 bool SketchPlugin_HasNoConstraint::isValid(const AttributePtr& theAttribute,
1736                                            const std::list<std::string>& theArguments,
1737                                            Events_InfoMessage& theError) const
1738 {
1739   std::set<std::string> aFeatureKinds;
1740   for (std::list<std::string>::const_iterator anArgIt = theArguments.begin();
1741        anArgIt != theArguments.end(); anArgIt++) {
1742     aFeatureKinds.insert(*anArgIt);
1743   }
1744
1745   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
1746     theError = "The attribute with the %1 type is not processed";
1747     theError.arg(theAttribute->attributeType());
1748     return false;
1749   }
1750
1751   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
1752                                                                       (theAttribute);
1753   bool isObject = aRefAttr->isObject();
1754   if (!isObject) {
1755     theError = "It uses an empty object";
1756     return false;
1757   }
1758   ObjectPtr anObject = aRefAttr->object();
1759   FeaturePtr aFeature = ModelAPI_Feature::feature(anObject);
1760   if (!aFeature.get()) {
1761     theError = "The feature of the checked attribute is empty";
1762     return false;
1763   }
1764
1765   FeaturePtr aCurrentFeature = ModelAPI_Feature::feature(aRefAttr->owner());
1766
1767   std::set<AttributePtr> aRefsList = anObject->data()->refsToMe();
1768   std::set<AttributePtr>::const_iterator anIt = aRefsList.begin();
1769   for (; anIt != aRefsList.end(); anIt++) {
1770     FeaturePtr aRefFeature = ModelAPI_Feature::feature((*anIt)->owner());
1771     if (aRefFeature.get() && aCurrentFeature != aRefFeature &&
1772         aFeatureKinds.find(aRefFeature->getKind()) != aFeatureKinds.end())
1773       return false; // constraint is found, that means that the check is not valid
1774   }
1775   return true;
1776 }
1777
1778 bool SketchPlugin_ReplicationReferenceValidator::isValid(
1779     const AttributePtr& theAttribute,
1780     const std::list<std::string>& theArguments,
1781     Events_InfoMessage& theError) const
1782 {
1783   AttributeRefAttrPtr aRefAttr =
1784       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1785   if (!aRefAttr)
1786   {
1787     theError = "Incorrect attribute";
1788     return false;
1789   }
1790
1791   ObjectPtr anOwner;
1792   if (aRefAttr->isObject())
1793     anOwner = aRefAttr->object();
1794   else
1795   {
1796     AttributePtr anAttr = aRefAttr->attr();
1797     anOwner = anAttr->owner();
1798   }
1799   FeaturePtr anAttrOwnerFeature = ModelAPI_Feature::feature(anOwner);
1800   if (!anAttrOwnerFeature)
1801     return true;
1802   AttributeBooleanPtr aCopyAttr = anAttrOwnerFeature->boolean(SketchPlugin_SketchEntity::COPY_ID());
1803   if (!aCopyAttr || !aCopyAttr->value())
1804     return true; // feature is not a copy, thus valid
1805
1806   // check the copy feature is already referred by the "Multi" feature
1807   FeaturePtr aMultiFeature = ModelAPI_Feature::feature(theAttribute->owner());
1808   AttributeRefListPtr aRefList = aMultiFeature->reflist(theArguments.front());
1809   for (int i = 0; i < aRefList->size(); ++i)
1810   {
1811     FeaturePtr aRefOwner = ModelAPI_Feature::feature(aRefList->object(i));
1812     if (aRefOwner == anAttrOwnerFeature)
1813     {
1814       theError = "Attribute refers to the object generated by this feature";
1815       return false;
1816     }
1817   }
1818
1819   return true;
1820 }
1821
1822 bool SketchPlugin_SketchFeatureValidator::isValid(const AttributePtr& theAttribute,
1823                                                   const std::list<std::string>& theArguments,
1824                                                   Events_InfoMessage& theError) const
1825 {
1826   if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId() &&
1827       theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
1828     theError = "The attribute with the %1 type is not processed";
1829     theError.arg(theAttribute->attributeType());
1830     return false;
1831   }
1832
1833   // check the attribute refers to a sketch feature
1834   bool isSketchFeature = false;
1835   AttributeRefAttrPtr aRefAttr =
1836       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
1837   if (aRefAttr) {
1838     isSketchFeature = aRefAttr->isObject();
1839     if (isSketchFeature) {
1840       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
1841       isSketchFeature = aFeature.get() != NULL;
1842       if (isSketchFeature) {
1843         std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
1844             std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
1845         isSketchFeature = aSketchFeature.get() != NULL;
1846       }
1847     }
1848   }
1849   else {
1850     AttributeReferencePtr aReference =
1851       std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
1852     if (aReference) {
1853       FeaturePtr aFeature = ModelAPI_Feature::feature(aReference->value());
1854       isSketchFeature = aFeature.get() && aFeature->getKind() == SketchPlugin_Sketch::ID();
1855     }
1856   }
1857
1858   if (!isSketchFeature)
1859     theError = "The object selected is not a sketch feature";
1860   return isSketchFeature;
1861 }
1862
1863 bool SketchPlugin_MultiRotationAngleValidator::isValid(const AttributePtr& theAttribute,
1864                                                        const std::list<std::string>& theArguments,
1865                                                        Events_InfoMessage& theError) const
1866 {
1867   if (theAttribute->attributeType() != ModelAPI_AttributeDouble::typeId()) {
1868     theError = "The attribute with the %1 type is not processed";
1869     theError.arg(theAttribute->attributeType());
1870     return false;
1871   }
1872
1873   AttributeDoublePtr anAngleAttr =
1874     std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(theAttribute);
1875
1876   FeaturePtr aMultiRotation = ModelAPI_Feature::feature(theAttribute->owner());
1877   AttributeStringPtr anAngleType =
1878       aMultiRotation->string(SketchPlugin_MultiRotation::ANGLE_TYPE());
1879   AttributeIntegerPtr aNbCopies =
1880       aMultiRotation->integer(SketchPlugin_MultiRotation::NUMBER_OF_OBJECTS_ID());
1881
1882   if (anAngleType->value() != "FullAngle")
1883   {
1884     double aFullAngleValue = anAngleAttr->value() * (aNbCopies->value() - 1);
1885     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 359.9999999)
1886     {
1887       theError = "Rotation single angle should produce full angle less than 360 degree";
1888       return false;
1889     }
1890   }
1891   else
1892   {
1893     double aFullAngleValue = anAngleAttr->value();
1894     if (aFullAngleValue < -1.e-7 || aFullAngleValue > 360.0000001)
1895     {
1896       theError = "Rotation full angle should be in range [0, 360]";
1897       return false;
1898     }
1899   }
1900
1901   return true;
1902 }
1903
1904 bool SketchPlugin_BSplineValidator::isValid(const AttributePtr& theAttribute,
1905                                             const std::list<std::string>& theArguments,
1906                                             Events_InfoMessage& theError) const
1907 {
1908   AttributePoint2DArrayPtr aPolesArray =
1909       std::dynamic_pointer_cast<GeomDataAPI_Point2DArray>(theAttribute);
1910   if (!aPolesArray)
1911     return false;
1912
1913   if (aPolesArray->size() < 2) {
1914     theError = "Number of B-spline poles should be 2 or more";
1915     return false;
1916   }
1917
1918   return true;
1919 }
1920
1921 bool SketchPlugin_CurveFittingValidator::isValid(const FeaturePtr& theFeature,
1922                                                  const std::list<std::string>& theArguments,
1923                                                  Events_InfoMessage& theError) const
1924 {
1925   AttributeRefAttrListPtr aRefAttrList =
1926       theFeature->refattrlist(SketchPlugin_CurveFitting::POINTS_ID());
1927   AttributeBooleanPtr aPeriodicAttr =
1928       theFeature->boolean(SketchPlugin_CurveFitting::PERIODIC_ID());
1929
1930   // check number of selected entities
1931   int aMinNbPoints = aPeriodicAttr->value() ? 3 : 2;
1932   if (aRefAttrList->size() < aMinNbPoints) {
1933     theError = "Not enough points selected. Need at least %1 points.";
1934     theError.arg(aMinNbPoints);
1935     return false;
1936   }
1937   return true;
1938 }