X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FSketchPlugin%2FSketchPlugin_Validators.cpp;h=d42c783606ae58dc8d45bc5f5255c60d55d4c5a0;hb=de93e11325cc65d1067e0c3484cbb5c836bdcde6;hp=ec5e929abb7d0b6101fe2e35f0e583d71f05f1ba;hpb=3eb5a9ba3696a7d8eb516943dfdabd8b188a76c5;p=modules%2Fshaper.git

diff --git a/src/SketchPlugin/SketchPlugin_Validators.cpp b/src/SketchPlugin/SketchPlugin_Validators.cpp
old mode 100644
new mode 100755
index ec5e929ab..d42c78360
--- a/src/SketchPlugin/SketchPlugin_Validators.cpp
+++ b/src/SketchPlugin/SketchPlugin_Validators.cpp
@@ -5,29 +5,66 @@
 // Author:      Vitaly SMETANNIKOV
 
 #include "SketchPlugin_Validators.h"
+
+#include "SketchPlugin_Arc.h"
+#include "SketchPlugin_Circle.h"
+#include "SketchPlugin_ConstraintCoincidence.h"
 #include "SketchPlugin_ConstraintDistance.h"
+#include "SketchPlugin_Fillet.h"
+#include "SketchPlugin_ConstraintRigid.h"
+#include "SketchPlugin_ConstraintTangent.h"
+#include "SketchPlugin_Line.h"
+#include "SketchPlugin_Point.h"
+#include "SketchPlugin_Sketch.h"
+#include "SketchPlugin_Tools.h"
+
+#include "SketcherPrs_Tools.h"
+
+#include <Events_InfoMessage.h>
+
 #include <ModelAPI_Data.h>
 #include <ModelAPI_Validator.h>
 #include <ModelAPI_AttributeDouble.h>
 #include <ModelAPI_AttributeRefAttr.h>
+
+#include <ModelAPI_AttributeRefAttrList.h>
+#include <ModelAPI_AttributeRefList.h>
+#include <ModelAPI_AttributeSelectionList.h>
+#include <ModelAPI_AttributeString.h>
 #include <ModelAPI_Session.h>
+#include <ModelAPI_Tools.h>
+#include <ModelAPI_ResultConstruction.h>
 
-//#include <ModuleBase_ValidatorLinearEdge.h>
+#include <ModelGeomAlgo_Point2D.h>
 
+#include <GeomAPI_Circ.h>
+#include <GeomAPI_Lin.h>
+#include <GeomAPI_Edge.h>
+#include <GeomAPI_Vertex.h>
 #include <GeomDataAPI_Point2D.h>
 
-bool SketchPlugin_DistanceAttrValidator::isValid(
-  const AttributePtr& theAttribute, const std::list<std::string>& theArguments ) const
+#include <algorithm>
+#include <cmath>
+
+const double tolerance = 1.e-7;
+
+bool SketchPlugin_DistanceAttrValidator::isValid(const AttributePtr& theAttribute,
+                                                 const std::list<std::string>& theArguments,
+                                                 Events_InfoMessage& theError) const
 {
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
   // there is a check whether the feature contains a point and a linear edge or two point values
   std::string aParamA = theArguments.front();
   SessionPtr aMgr = ModelAPI_Session::get();
   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
 
-  AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
-  if (!aRefAttr)
-    return false;
-
+  AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
+                                                                      (theAttribute);
   bool isObject = aRefAttr->isObject();
   if (!isObject) {
     // an attribute is a point. A point value is valid always for the distance
@@ -35,101 +72,870 @@ bool SketchPlugin_DistanceAttrValidator::isValid(
   } else {
     // 1. check whether the references object is a linear
     ObjectPtr anObject = aRefAttr->object();
-    /*
-    const ModelAPI_AttributeValidator* aCircleValidator = 
-      dynamic_cast<ModuleBase_ValidatorLinearEdge*>(aFactory->validator("ModuleBase_ValidatorLinearEdge"));
+
+    const ModelAPI_AttributeValidator* aShapeValidator =
+      dynamic_cast<const ModelAPI_AttributeValidator*>(
+      aFactory->validator("GeomValidators_ShapeType"));
     std::list<std::string> anArguments;
     anArguments.push_back("circle");
-    bool anEdgeValid = aCircleValidator->isValid(aRefAttr, anArguments);
-    if (anEdgeValid)
+    Events_InfoMessage aCircleError;
+    bool aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aCircleError);
+    // the circle line is not a valid case
+    if (aShapeValid) {
+      theError = "Circle can not be used in distance constraint";
       return false;
-      
+    }
+
     anArguments.clear();
     anArguments.push_back("line");
-    bool anEdgeValid = aCircleValidator->isValid(aRefAttr, anArguments);
-    if (!anEdgeValid)
-      return true;*/
-
-    /*const ModelAPI_ResultValidator* anArcValidator = aFactory->validator("ModuleBase_ValidatorLinearEdge");
-    //dynamic_cast<const ModelAPI_ResultValidator*>(aFactory->validator("SketchPlugin_ResultArc"));
-    bool anArcValid = anArcValidator->isValid(anObject);
-    if (anArcValid)
+    Events_InfoMessage aLineError;
+    aShapeValid = aShapeValidator->isValid(aRefAttr, anArguments, aLineError);
+    // if the attribute value is not a line, that means it is a vertex. A vertex is always valid
+    if (aShapeValid) {
+      FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+      // If it is a line then we have to check that first attribute id not a line
+      std::shared_ptr<SketchPlugin_Feature> aSFeature =
+        std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
+      SketchPlugin_Sketch* aSketch = aSFeature->sketch();
+      std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(aSketch);
+      std::shared_ptr<GeomDataAPI_Point2D> aPoint = SketcherPrs_Tools::getFeaturePoint(
+        aFeature->data(), aParamA, aPlane);
+      if (!aPoint.get()) {
+        theError = "One of parameters of distance constraint should be a point";
+        return false;
+      }
+    }
+  }
+  return true;
+}
+
+bool SketchPlugin_TangentAttrValidator::isValid(const AttributePtr& theAttribute,
+                                                const std::list<std::string>& theArguments,
+                                                Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  // there is a check whether the feature contains a point and a linear edge or two point values
+  std::string aParamA = theArguments.front();
+  SessionPtr aMgr = ModelAPI_Session::get();
+  ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
+
+  FeaturePtr anAttributeFeature =
+    std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+  AttributeRefAttrPtr aRefAttr =
+    std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+
+  bool isObject = aRefAttr->isObject();
+  ObjectPtr anObject = aRefAttr->object();
+  if (isObject && anObject.get()) {
+    FeaturePtr aRefFea = ModelAPI_Feature::feature(anObject);
+
+    AttributeRefAttrPtr aOtherAttr = anAttributeFeature->data()->refattr(aParamA);
+    ObjectPtr aOtherObject = aOtherAttr->object();
+    FeaturePtr aOtherFea = ModelAPI_Feature::feature(aOtherObject);
+    if (!aOtherFea)
+      return true;
+
+    if (aRefFea->getKind() == SketchPlugin_Line::ID()) {
+      if (aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
+          aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
+        theError = "It refers to a %1, but %2 is neither an %3 nor %4";
+        theError.arg(SketchPlugin_Line::ID()).arg(aParamA)
+            .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
+        return false;
+      }
+    }
+    else if (aRefFea->getKind() == SketchPlugin_Arc::ID() ||
+             aRefFea->getKind() == SketchPlugin_Circle::ID()) {
+      if (aOtherFea->getKind() != SketchPlugin_Line::ID() &&
+          aOtherFea->getKind() != SketchPlugin_Arc::ID() &&
+          aOtherFea->getKind() != SketchPlugin_Circle::ID()) {
+        theError = "It refers to an %1, but %2 is not a %3 or an %4 or a %5";
+        theError.arg(SketchPlugin_Arc::ID()).arg(aParamA)
+            .arg(SketchPlugin_Line::ID()).arg(SketchPlugin_Arc::ID())
+            .arg(SketchPlugin_Circle::ID());
+        return false;
+      }
+    }
+    else {
+      theError = "It refers to %1, but should refer to %2 or %3 or %4";
+      theError.arg(aRefFea->getKind()).arg(SketchPlugin_Line::ID())
+          .arg(SketchPlugin_Arc::ID()).arg(SketchPlugin_Circle::ID());
+      return false;
+    }
+    return true;
+  }
+  else {
+    theError = "It uses an empty object";
+    return false;
+  }
+
+  return true;
+}
+
+bool SketchPlugin_NotFixedValidator::isValid(const AttributePtr& theAttribute,
+                                             const std::list<std::string>& theArguments,
+                                             Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  std::shared_ptr<SketchPlugin_Feature> aFeature =
+      std::dynamic_pointer_cast<SketchPlugin_Feature>(theAttribute->owner());
+  if (!aFeature)
+    return true;
+
+  AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+
+  SketchPlugin_Sketch* aSketch = aFeature->sketch();
+  int aNbFeatures = aSketch->numberOfSubs();
+  for (int anInd = 0; anInd < aNbFeatures; anInd++) {
+    FeaturePtr aSubFeature = aSketch->subFeature(anInd);
+    if (aSubFeature->getKind() != SketchPlugin_ConstraintRigid::ID() || aSubFeature == aFeature)
+      continue;
+    AttributeRefAttrPtr aRAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
+        aSubFeature->attribute(SketchPlugin_ConstraintRigid::ENTITY_A()));
+    if (aRefAttr->isObject()) {
+      if (aRefAttr->object() == aRAttr->object()) {
+        ObjectPtr anObject = aRefAttr->object();
+        std::string aName = anObject.get() ? anObject->data()->name() : "";
+        theError = "The object %1 has been already fixed.";
+        theError.arg(aName);
+        return false;
+      }
+    }
+    else if (aRefAttr->attr() == aRAttr->attr()) {
+      AttributePtr anAttribute = aRefAttr->attr();
+      std::string aName = anAttribute.get() ? anAttribute->id() : "";
+      theError = "The attribute %1 has been already fixed.";
+      theError.arg(aName);
+      return false;
+    }
+  }
+  return true;
+}
+
+bool SketchPlugin_EqualAttrValidator::isValid(const AttributePtr& theAttribute,
+                                              const std::list<std::string>& theArguments,
+                                              Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  std::string aParamA = theArguments.front();
+  FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+  AttributeRefAttrPtr aRefAttr[2];
+  aRefAttr[0] = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+  aRefAttr[1] = aFeature->data()->refattr(aParamA);
+
+  if (!aRefAttr[0]->isObject() || !aRefAttr[1]->isObject()) {
+    theError = "Attributes can not be used in equal constraint";
+    return false;
+  }
+
+  std::string aType[2];
+  std::list<std::string> anArguments;
+  for (int i = 0; i < 2; i++) {
+    ObjectPtr anObject = aRefAttr[i]->object();
+    if (!anObject.get()) {
+      theError = "An empty object is used.";
       return false;
+    }
 
-    // If the object is not a line then it is accepted. It can be a point feature selected
-    const ModelAPI_ResultValidator* aLineValidator =
-        dynamic_cast<const ModelAPI_ResultValidator*>(aFactory->validator("SketchPlugin_ResultLine"));
-    bool aLineValid = aLineValidator->isValid(anObject);
-    if (!aLineValid)
-      return true;*/
-
-    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
-    // If it is a line then we have to check that first attribute id not a line
-    std::shared_ptr<GeomDataAPI_Point2D> aPoint = getFeaturePoint(aFeature->data(), aParamA);
-    if (aPoint)
+    aFeature = ModelAPI_Feature::feature(anObject);
+    if (!aFeature.get()) {
+      theError = "An empty feature is used.";
+      return false;
+    }
+
+    aType[i] = aFeature->getKind();
+    if (aFeature->getKind() != SketchPlugin_Line::ID() &&
+        aFeature->getKind() != SketchPlugin_Circle::ID() &&
+        aFeature->getKind() != SketchPlugin_Arc::ID()) {
+      theError = "The %1 feature kind of attribute is wrong. It should be %2 or %3 or %4";
+      theError.arg(aFeature->getKind()).arg(SketchPlugin_Line::ID())
+          .arg(SketchPlugin_Circle::ID()).arg(SketchPlugin_Arc::ID());
+      // wrong type of attribute
+      return false;
+    }
+  }
+
+  if ((aType[0] == SketchPlugin_Line::ID() || aType[1] == SketchPlugin_Line::ID()) &&
+      aType[0] != aType[1]) {
+    theError = "Feature with kinds %1 and %2 can not be equal.";
+    theError.arg(aType[0]).arg(aType[1]);
+    return false;
+  }
+  return true;
+}
+
+bool SketchPlugin_MirrorAttrValidator::isValid(const AttributePtr& theAttribute,
+                                               const std::list<std::string>& theArguments,
+                                               Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+  AttributeRefListPtr aSelAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
+
+  AttributeRefListPtr aRefListOfMirrored = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
+      aFeature->attribute(SketchPlugin_Constraint::ENTITY_C()));
+  std::list<ObjectPtr> aMirroredObjects = aRefListOfMirrored->list();
+
+  for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
+    ObjectPtr aSelObject = aSelAttr->object(anInd);
+    std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
+    std::list<ObjectPtr>::iterator aMirIter = aMirroredObjects.begin();
+    for (; aMirIter != aMirroredObjects.end(); aMirIter++)
+      if (aSelObject == *aMirIter) {
+        theError = "The object %1 is a result of mirror";
+        theError.arg(aName);
+        return false;
+      }
+  }
+  return true;
+}
+
+bool SketchPlugin_CoincidenceAttrValidator::isValid(const AttributePtr& theAttribute,
+                                                    const std::list<std::string>& theArguments,
+                                                    Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  // there is a check whether the feature contains a point and a linear edge or two point values
+  std::string aParamA = theArguments.front();
+  SessionPtr aMgr = ModelAPI_Session::get();
+  ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
+
+  FeaturePtr aConstraint = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+  AttributeRefAttrPtr aRefAttrA = aConstraint->data()->refattr(aParamA);
+  if (!aRefAttrA) {
+    theError = "The %1 attribute should be %2";
+    theError.arg(aParamA).arg(ModelAPI_AttributeRefAttr::typeId());
+    return false;
+  }
+
+  AttributeRefAttrPtr aRefAttrB =
+    std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+
+  // first attribute is a point, it may coincide with any object
+  if (!aRefAttrA->isObject())
+    return true;
+  else {
+    ObjectPtr anObject = aRefAttrA->object();
+    if (!anObject.get()) {
+      theError = "%1 attribute has an empty object";
+      theError.arg(aParamA);
+      return false;
+    }
+    FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrA->object());
+    if (!aFeature.get()) {
+      theError = "%1 attribute has an empty feature";
+      theError.arg(aParamA);
+      return false;
+    }
+
+    if (aFeature->getKind() == SketchPlugin_Point::ID())
       return true;
   }
+
+  // second attribute is a point, it may coincide with any object
+  if (!aRefAttrB->isObject())
+    return true;
+  else {
+    FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrB->object());
+    if (!aFeature) {
+      theError = "%1 attribute has an empty object";
+      theError.arg(theAttribute->id());
+      return false;
+    }
+    if (aFeature->getKind() == SketchPlugin_Point::ID())
+      return true;
+  }
+  theError = "There is no an attribute filled by a point";
   return false;
 }
 
-//bool SketchPlugin_DifferentObjectsValidator::isValid(const FeaturePtr& theFeature,
-//                                                 const std::list<std::string>& theArguments,
-//                                                 const ObjectPtr& theObject) const
-//{
-//  std::list<std::shared_ptr<ModelAPI_Attribute> > anAttrs = 
-//    theFeature->data()->attributes(ModelAPI_AttributeRefAttr::type());
-//  std::list<std::shared_ptr<ModelAPI_Attribute> >::iterator anAttr = anAttrs.begin();
-//  for(; anAttr != anAttrs.end(); anAttr++) {
-//    if (*anAttr) {
-//      std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = 
-//        std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(*anAttr);
-//      // check the object is already presented
-//      if (aRef->isObject() && aRef->object() == theObject)
-//        return false;
-//    }
-//  }
-//  return true;
-//}
-
-//bool SketchPlugin_DifferentObjectsValidator::isValid(
-//  const AttributePtr& theAttribute, const std::list<std::string>& theArguments ) const
-//{
-//  std::shared_ptr<ModelAPI_AttributeRefAttr> anOrigAttr = 
-//    std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
-//  if (anOrigAttr && anOrigAttr->isObject()) {
-//    const ObjectPtr& anObj = theAttribute->owner();
-//    const FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anObj);
-//
-//    std::list<std::shared_ptr<ModelAPI_Attribute> > anAttrs = 
-//      aFeature->data()->attributes(ModelAPI_AttributeRefAttr::type());
-//    std::list<std::shared_ptr<ModelAPI_Attribute> >::iterator anAttr = anAttrs.begin();
-//    for(; anAttr != anAttrs.end(); anAttr++) {
-//      if (*anAttr && *anAttr != theAttribute) {
-//        std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = 
-//          std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(*anAttr);
-//        // check the object is already presented
-//        if (aRef->isObject() && aRef->object() == anOrigAttr->object())
-//          return false;
-//      }
-//    }
-//  }
-//  return true;
-//}
-
-//bool SketchPlugin_DifferentObjectsValidator::isValid(const FeaturePtr& theFeature,
-//  const std::list<std::string>& theArguments, const AttributePtr& theAttribute) const
-//{
-//  std::list<std::shared_ptr<ModelAPI_Attribute> > anAttrs = 
-//    theFeature->data()->attributes(ModelAPI_AttributeRefAttr::type());
-//  std::list<std::shared_ptr<ModelAPI_Attribute> >::iterator anAttr = anAttrs.begin();
-//  for(; anAttr != anAttrs.end(); anAttr++) {
-//    if (*anAttr) {
-//      std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = 
-//        std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(*anAttr);
-//      // check the object is already presented
-//      if (!aRef->isObject() && aRef->attr() == theAttribute)
-//        return false;
-//    }
-//  }
-//  return true;
-//}
+
+bool SketchPlugin_CopyValidator::isValid(const AttributePtr& theAttribute,
+                                         const std::list<std::string>& theArguments,
+                                         Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefList::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+  AttributeRefListPtr aSelAttr =
+    std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
+
+  AttributeRefListPtr aRefListOfInitial = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
+      aFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
+  AttributeRefListPtr aRefListOfCopied = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
+      aFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
+  std::list<ObjectPtr> anInitialObjects = aRefListOfInitial->list();
+  std::list<ObjectPtr> aCopiedObjects = aRefListOfCopied->list();
+
+  std::list<ObjectPtr>::iterator anObjIter;
+  for(int anInd = 0; anInd < aSelAttr->size(); anInd++) {
+    ObjectPtr aSelObject = aSelAttr->object(anInd);
+    anObjIter = anInitialObjects.begin();
+    for (; anObjIter != anInitialObjects.end(); anObjIter++)
+      if (aSelObject == *anObjIter)
+        break;
+    if (anObjIter != anInitialObjects.end())
+      continue;
+    anObjIter = aCopiedObjects.begin();
+    for (; anObjIter != aCopiedObjects.end(); anObjIter++)
+      if (aSelObject == *anObjIter) {
+        std::string aName = aSelObject.get() ? aSelObject->data()->name() : "";
+        theError = "The object %1 is a result of copy";
+        theError.arg(aName);
+        return false;
+      }
+  }
+  return true;
+}
+
+bool SketchPlugin_SolverErrorValidator::isValid(
+  const std::shared_ptr<ModelAPI_Feature>& theFeature,
+  const std::list<std::string>& theArguments,
+  Events_InfoMessage& theError) const
+{
+  AttributeStringPtr aAttributeString = theFeature->string(SketchPlugin_Sketch::SOLVER_ERROR());
+
+  if (!aAttributeString->value().empty()) {
+    theError = aAttributeString->value();
+    return false;
+  }
+
+  return true;
+}
+
+bool SketchPlugin_SolverErrorValidator::isNotObligatory(std::string theFeature,
+                                                        std::string theAttribute)
+{
+  return true;
+}
+
+static bool hasSameTangentFeature(const std::set<AttributePtr>& theRefsList,
+                                  const FeaturePtr theFeature)
+{
+  for(std::set<AttributePtr>::const_iterator
+      anIt = theRefsList.cbegin(); anIt != theRefsList.cend(); ++anIt) {
+    std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
+    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
+    if (aFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
+      AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
+        aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_A()));
+      AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
+        aFeature->attribute(SketchPlugin_ConstraintTangent::ENTITY_B()));
+      if(anAttrRefA.get()) {
+        ResultPtr aResA = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefA->object());
+        if(aResA.get()) {
+          DocumentPtr aDoc = aResA->document();
+          if(aDoc.get()) {
+            FeaturePtr aFeatureA = aDoc->feature(aResA);
+            if(aFeatureA.get() && aFeatureA == theFeature) {
+              return true;
+            }
+          }
+        }
+      }
+      if(anAttrRefB.get()) {
+        ResultPtr aResB = std::dynamic_pointer_cast<ModelAPI_Result>(anAttrRefB->object());
+        if(aResB.get()) {
+          DocumentPtr aDoc = aResB->document();
+          if(aDoc.get()) {
+            FeaturePtr aFeatureB = aDoc->feature(aResB);
+            if(aFeatureB.get() && aFeatureB == theFeature) {
+              return true;
+            }
+          }
+        }
+      }
+    }
+  }
+  return false;
+}
+
+bool SketchPlugin_FilletVertexValidator::isValid(const AttributePtr& theAttribute,
+                                                 const std::list<std::string>& theArguments,
+                                                 Events_InfoMessage& theError) const
+{
+  AttributeRefAttrPtr aPointRefAttr =
+    std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+  if(!aPointRefAttr.get()) {
+    theError = "Error: Point not selected.";
+    return false;
+  }
+
+  AttributePtr aPointAttribute = aPointRefAttr->attr();
+  if (!aPointAttribute.get()) {
+    theError = "Error: Bad point selected.";
+    return false;
+  }
+  std::shared_ptr<GeomAPI_Pnt2d> aSelectedPnt =
+    std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aPointAttribute)->pnt();
+
+  // Obtain constraint coincidence for the fillet point.
+  const std::set<AttributePtr>& aRefsList = aPointAttribute->owner()->data()->refsToMe();
+  FeaturePtr aConstraintCoincidence;
+  for(std::set<AttributePtr>::const_iterator anIt = aRefsList.cbegin();
+      anIt != aRefsList.cend(); ++anIt) {
+    std::shared_ptr<ModelAPI_Attribute> aAttr = (*anIt);
+    FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aAttr->owner());
+    if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
+      AttributeRefAttrPtr anAttrRefA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
+        aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_A()));
+      AttributeRefAttrPtr anAttrRefB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
+        aConstrFeature->attribute(SketchPlugin_ConstraintCoincidence::ENTITY_B()));
+      if(anAttrRefA.get() && !anAttrRefA->isObject()) {
+        AttributePtr anAttrA = anAttrRefA->attr();
+        if(aPointAttribute == anAttrA) {
+          aConstraintCoincidence = aConstrFeature;
+          break;
+        }
+      }
+      if(anAttrRefB.get() && !anAttrRefB->isObject()) {
+        AttributePtr anAttrB = anAttrRefB->attr();
+        if(aPointAttribute == anAttrB) {
+          aConstraintCoincidence = aConstrFeature;
+          break;
+        }
+      }
+    }
+  }
+
+  if(!aConstraintCoincidence.get()) {
+    theError = "Error: one of the selected point does not have coicidence.";
+    return false;
+  }
+
+  // Get coincides from constraint.
+  std::set<FeaturePtr> aCoinsides;
+  SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
+                                        SketchPlugin_ConstraintCoincidence::ENTITY_A(),
+                                        aCoinsides);
+  SketchPlugin_Tools::findCoincidences(aConstraintCoincidence,
+                                        SketchPlugin_ConstraintCoincidence::ENTITY_B(),
+                                        aCoinsides);
+
+  // Remove points from set of coincides.
+  std::set<FeaturePtr> aNewSetOfCoincides;
+  for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
+      anIt != aCoinsides.end(); ++anIt) {
+    std::shared_ptr<SketchPlugin_SketchEntity> aSketchEntity =
+      std::dynamic_pointer_cast<SketchPlugin_SketchEntity>(*anIt);
+    if(aSketchEntity.get() && aSketchEntity->isCopy()) {
+      continue;
+    }
+    if((*anIt)->getKind() != SketchPlugin_Line::ID() &&
+        (*anIt)->getKind() != SketchPlugin_Arc::ID()) {
+          continue;
+    }
+    if((*anIt)->getKind() == SketchPlugin_Arc::ID()) {
+      AttributePtr anArcCenter = (*anIt)->attribute(SketchPlugin_Arc::CENTER_ID());
+      std::shared_ptr<GeomAPI_Pnt2d> anArcCenterPnt =
+        std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anArcCenter)->pnt();
+      double aDistSelectedArcCenter = aSelectedPnt->distance(anArcCenterPnt);
+      if(aDistSelectedArcCenter < tolerance) {
+        continue;
+      }
+    }
+    aNewSetOfCoincides.insert(*anIt);
+  }
+  aCoinsides = aNewSetOfCoincides;
+
+  // If we still have more than two coincides remove auxilary entities from set of coincides.
+  if(aCoinsides.size() > 2) {
+    aNewSetOfCoincides.clear();
+    for(std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
+        anIt != aCoinsides.end(); ++anIt) {
+      if(!(*anIt)->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value()) {
+        aNewSetOfCoincides.insert(*anIt);
+      }
+    }
+    aCoinsides = aNewSetOfCoincides;
+  }
+
+  if(aCoinsides.size() != 2) {
+    theError = "Error: One of the selected points does not have two suitable edges for fillet.";
+    return false;
+  }
+
+  // Check that selected edges don't have tangent constraint.
+  std::set<FeaturePtr>::iterator anIt = aCoinsides.begin();
+  FeaturePtr aFirstFeature = *anIt++;
+  FeaturePtr aSecondFeature = *anIt;
+  const std::set<AttributePtr>& aFirstFeatureRefsList = aFirstFeature->data()->refsToMe();
+  if(hasSameTangentFeature(aFirstFeatureRefsList, aSecondFeature)) {
+    theError = "Error: Edges in selected point has tangent constraint.";
+    return false;
+  }
+
+  std::list<ResultPtr> aFirstResults = aFirstFeature->results();
+  for(std::list<ResultPtr>::iterator aResIt = aFirstResults.begin();
+      aResIt != aFirstResults.end(); ++aResIt) {
+    ResultPtr aRes = *aResIt;
+    const std::set<AttributePtr>& aResRefsList = aRes->data()->refsToMe();
+    if(hasSameTangentFeature(aResRefsList, aSecondFeature)) {
+      theError = "Error: Edges in selected point has tangent constraint.";
+      return false;
+    }
+  }
+
+  // Check that lines not collinear
+  if(aFirstFeature->getKind() == SketchPlugin_Line::ID() &&
+      aSecondFeature->getKind() == SketchPlugin_Line::ID()) {
+    std::string aStartAttr = SketchPlugin_Line::START_ID();
+    std::string anEndAttr = SketchPlugin_Line::END_ID();
+    std::shared_ptr<GeomAPI_Pnt2d> aFirstStartPnt, aFirstEndPnt, aSecondStartPnt, aSecondEndPnt;
+    aFirstStartPnt =
+      std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+      aFirstFeature->attribute(aStartAttr))->pnt();
+    aFirstEndPnt =
+      std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aFirstFeature->attribute(anEndAttr))->pnt();
+    aSecondStartPnt =
+      std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+      aSecondFeature->attribute(aStartAttr))->pnt();
+    aSecondEndPnt =
+      std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+      aSecondFeature->attribute(anEndAttr))->pnt();
+    double aCheck1 =
+      fabs((aFirstEndPnt->x() - aFirstStartPnt->x()) *
+      (aSecondStartPnt->y() - aFirstStartPnt->y()) -
+      (aSecondStartPnt->x() - aFirstStartPnt->x()) * (aFirstEndPnt->y() - aFirstStartPnt->y()));
+    double aCheck2 =
+      fabs((aFirstEndPnt->x() - aFirstStartPnt->x()) *
+      (aSecondEndPnt->y() - aFirstStartPnt->y()) -
+      (aSecondEndPnt->x() - aFirstStartPnt->x()) * (aFirstEndPnt->y() - aFirstStartPnt->y()));
+    if(aCheck1 < 1.e-7 && aCheck2 < 1.e-7) {
+      return false;
+    }
+  }
+
+
+  return true;
+}
+
+bool SketchPlugin_MiddlePointAttrValidator::isValid(const AttributePtr& theAttribute,
+                                                    const std::list<std::string>& theArguments,
+                                                    Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  // there is a check whether the feature contains a point and a linear edge or two point values
+  std::string aParamA = theArguments.front();
+  SessionPtr aMgr = ModelAPI_Session::get();
+  ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
+
+  FeaturePtr anAttributeFeature =
+    std::dynamic_pointer_cast<ModelAPI_Feature>(theAttribute->owner());
+  AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+  AttributeRefAttrPtr anOtherAttr = anAttributeFeature->data()->refattr(aParamA);
+
+  AttributeRefAttrPtr aRefAttrs[2] = {aRefAttr, anOtherAttr};
+  int aNbPoints = 0;
+  int aNbLines = 0;
+  for (int i = 0; i < 2; ++i) {
+    if (!aRefAttrs[i]->isObject())
+      ++aNbPoints;
+    else {
+      FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttrs[i]->object());
+      if (!aFeature) {
+        if (aNbPoints + aNbLines != 0)
+          return true;
+        else continue;
+      }
+
+      if (aFeature->getKind() == SketchPlugin_Point::ID())
+        ++aNbPoints;
+      else if (aFeature->getKind() == SketchPlugin_Line::ID())
+        ++aNbLines;
+    }
+  }
+
+  if (aNbPoints != 1 || aNbLines != 1) {
+    theError = "Middle point constraint allows points and lines only";
+    return false;
+  }
+  return true;
+}
+
+bool SketchPlugin_ArcTangentPointValidator::isValid(const AttributePtr& theAttribute,
+                                                    const std::list<std::string>& /*theArguments*/,
+                                                    Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeRefAttr::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+  AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
+  AttributePtr anAttr = aRefAttr->attr();
+  if (!anAttr) {
+    theError = "The attribute %1 should be a point";
+    theError.arg(theAttribute->id());
+    return false;
+  }
+
+  FeaturePtr anAttrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anAttr->owner());
+  const std::string& aFeatureType = anAttrFeature->getKind();
+  if (aFeatureType == SketchPlugin_Arc::ID()) {
+    // selected point should not be a center of arc
+    const std::string& aPntId = anAttr->id();
+    if (aPntId != SketchPlugin_Arc::START_ID() && aPntId != SketchPlugin_Arc::END_ID()) {
+      theError = "The attribute %1 is not supported";
+      theError.arg(aPntId);
+      return false;
+    }
+  }
+  else if (aFeatureType == SketchPlugin_Line::ID()) {
+    // selected point should be bound point of line
+    const std::string& aPntId = anAttr->id();
+    if (aPntId != SketchPlugin_Line::START_ID() && aPntId != SketchPlugin_Line::END_ID()) {
+      theError = "The attribute %1 is not supported";
+      theError.arg(aPntId);
+      return false;
+    }
+  }
+  else {
+    theError = "Unable to build tangent arc on %1";
+    theError.arg(anAttrFeature->getKind());
+    return false;
+  }
+
+  // Check the tangent point is equal to arc end
+  FeaturePtr anArc = std::dynamic_pointer_cast<ModelAPI_Feature>(aRefAttr->owner());
+  std::shared_ptr<GeomDataAPI_Point2D> anEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+      anArc->attribute(SketchPlugin_Arc::END_ID()));
+  if (anEndPoint->isInitialized()) {
+    std::shared_ptr<GeomDataAPI_Point2D> aTangPt =
+        std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr);
+    if (aTangPt->pnt()->distance(anEndPoint->pnt()) < tolerance) {
+      theError = "Unable to build arc on same points";
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool SketchPlugin_IntersectionValidator::isValid(const AttributePtr& theAttribute,
+                                                 const std::list<std::string>& theArguments,
+                                                 Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+  AttributeSelectionPtr aLineAttr =
+                       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
+  std::shared_ptr<GeomAPI_Edge> anEdge;
+  if(aLineAttr && aLineAttr->value() && aLineAttr->value()->isEdge()) {
+    anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->value()));
+  } else if(aLineAttr->context() &&
+            aLineAttr->context()->shape() && aLineAttr->context()->shape()->isEdge()) {
+    anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->context()->shape()));
+  }
+
+  if (!anEdge || !anEdge->isLine()) {
+    theError = "The attribute %1 should be a line";
+    theError.arg(theAttribute->id());
+    return false;
+  }
+
+  std::shared_ptr<GeomAPI_Dir> aLineDir = anEdge->line()->direction();
+
+  // find a sketch
+  std::shared_ptr<SketchPlugin_Sketch> aSketch;
+  std::set<AttributePtr> aRefs = aLineAttr->owner()->data()->refsToMe();
+  std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
+  for (; anIt != aRefs.end(); ++anIt) {
+    CompositeFeaturePtr aComp =
+        std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
+    if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
+      aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
+      break;
+    }
+  }
+  if (!aSketch) {
+    theError = "There is no sketch referring to the current feature";
+    return false;
+  }
+
+  std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
+  std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
+  return fabs(aNormal->dot(aLineDir)) > tolerance * tolerance;
+}
+
+bool SketchPlugin_SplitValidator::isValid(const AttributePtr& theAttribute,
+                                          const std::list<std::string>& theArguments,
+                                          Events_InfoMessage& theError) const
+{
+  bool aValid = false;
+
+  if (theAttribute->attributeType() != ModelAPI_AttributeReference::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return aValid;
+  }
+  AttributeReferencePtr aFeatureAttr =
+            std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
+
+  ObjectPtr anAttrObject = aFeatureAttr->value();
+  FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttrObject);
+  if (!anAttrFeature)
+    return aValid;
+
+  std::string aKind = anAttrFeature->getKind();
+  if (aKind == SketchPlugin_Line::ID() ||
+      aKind == SketchPlugin_Arc::ID() ||
+      aKind == SketchPlugin_Circle::ID()) {
+
+    std::set<ResultPtr> anEdgeShapes;
+    ModelAPI_Tools::shapesOfType(anAttrFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
+    if (anEdgeShapes.empty() || anEdgeShapes.size() > 1 /*there case has not existed yet*/)
+      return aValid;
+
+    // coincidences to the feature
+    std::set<std::shared_ptr<GeomDataAPI_Point2D> > aRefAttributes;
+    ModelGeomAlgo_Point2D::getPointsOfReference(anAttrFeature,
+                        SketchPlugin_ConstraintCoincidence::ID(),
+                        aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
+
+    GeomShapePtr anAttrShape = (*anEdgeShapes.begin())->shape();
+    std::shared_ptr<SketchPlugin_Feature> aSFeature =
+                                 std::dynamic_pointer_cast<SketchPlugin_Feature>(anAttrFeature);
+    SketchPlugin_Sketch* aSketch = aSFeature->sketch();
+
+    std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
+    std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
+        aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
+    std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
+        aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
+    std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
+        aData->attribute(SketchPlugin_Sketch::NORM_ID()));
+    std::shared_ptr<GeomAPI_Dir> aDirY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
+
+    typedef std::map<std::shared_ptr<GeomAPI_Pnt>,
+                     std::pair<std::list<std::shared_ptr<GeomDataAPI_Point2D> >,
+                               std::list<std::shared_ptr<ModelAPI_Object> > > > PointToRefsMap;
+    PointToRefsMap aPointsInfo;
+
+    ModelGeomAlgo_Point2D::getPointsInsideShape(anAttrShape, aRefAttributes, aC->pnt(),
+                                                aX->dir(), aDirY, aPointsInfo);
+    int aCoincidentToFeature = (int)aPointsInfo.size();
+    if (aKind == SketchPlugin_Circle::ID())
+      aValid = aCoincidentToFeature >= 2;
+    else
+      aValid = aCoincidentToFeature >= 1;
+  }
+
+  return aValid;
+}
+
+bool SketchPlugin_ProjectionValidator::isValid(const AttributePtr& theAttribute,
+                                               const std::list<std::string>& theArguments,
+                                               Events_InfoMessage& theError) const
+{
+  if (theAttribute->attributeType() != ModelAPI_AttributeSelection::typeId()) {
+    theError = "The attribute with the %1 type is not processed";
+    theError.arg(theAttribute->attributeType());
+    return false;
+  }
+
+  AttributeSelectionPtr aFeatureAttr =
+      std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
+  std::shared_ptr<GeomAPI_Edge> anEdge;
+  if (aFeatureAttr.get()) {
+    GeomShapePtr aVal = aFeatureAttr->value();
+    ResultPtr aRes = aFeatureAttr->context();
+    if(aFeatureAttr->value() && aFeatureAttr->value()->isEdge()) {
+      anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->value()));
+    } else if(aFeatureAttr->context() && aFeatureAttr->context()->shape() &&
+              aFeatureAttr->context()->shape()->isEdge()) {
+      anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aFeatureAttr->context()->shape()));
+    }
+  }
+  if (!anEdge) {
+    theError = "The attribute %1 should be an edge";
+    theError.arg(theAttribute->id());
+    return false;
+  }
+
+  // find a sketch
+  std::shared_ptr<SketchPlugin_Sketch> aSketch;
+  std::set<AttributePtr> aRefs = theAttribute->owner()->data()->refsToMe();
+  std::set<AttributePtr>::const_iterator anIt = aRefs.begin();
+  for (; anIt != aRefs.end(); ++anIt) {
+    CompositeFeaturePtr aComp =
+        std::dynamic_pointer_cast<ModelAPI_CompositeFeature>((*anIt)->owner());
+    if (aComp && aComp->getKind() == SketchPlugin_Sketch::ID()) {
+      aSketch = std::dynamic_pointer_cast<SketchPlugin_Sketch>(aComp);
+      break;
+    }
+  }
+  if (!aSketch) {
+    theError = "There is no sketch referring to the current feature";
+    return false;
+  }
+
+  std::shared_ptr<GeomAPI_Pln> aPlane = aSketch->plane();
+  std::shared_ptr<GeomAPI_Dir> aNormal = aPlane->direction();
+  std::shared_ptr<GeomAPI_Pnt> anOrigin = aPlane->location();
+
+  if (anEdge->isLine()) {
+    std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
+    std::shared_ptr<GeomAPI_Dir> aLineDir = aLine->direction();
+    std::shared_ptr<GeomAPI_Pnt> aLineLoc = aLine->location();
+    double aDot = aNormal->dot(aLineDir);
+    double aDist = aLineLoc->xyz()->decreased(anOrigin->xyz())->dot(aNormal->xyz());
+    bool aValid = (fabs(aDot) >= tolerance && fabs(aDot) < 1.0 - tolerance) ||
+           (fabs(aDot) < tolerance && fabs(aDist) > tolerance);
+    if (!aValid)
+      theError = "Error: Edge is already in the sketch plane.";
+    return aValid;
+  }
+  else if (anEdge->isCircle() || anEdge->isArc()) {
+    std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
+    std::shared_ptr<GeomAPI_Dir> aCircNormal = aCircle->normal();
+    std::shared_ptr<GeomAPI_Pnt> aCircCenter = aCircle->center();
+    double aDot = fabs(aNormal->dot(aCircNormal));
+    double aDist = aCircCenter->xyz()->decreased(anOrigin->xyz())->dot(aNormal->xyz());
+    bool aValid = fabs(aDot - 1.0) < tolerance * tolerance && fabs(aDist) > tolerance;
+    if (!aValid)
+      theError.arg(anEdge->isCircle() ? "Error: Cirlce is already in the sketch plane."
+                                      : "Error: Arc is already in the sketch plane.");
+    return aValid;
+  }
+
+  theError = "Error: Selected object is not line, circle or arc.";
+  return false;
+}