+ if (!sketch())
+ return thePrevious;
+
+ boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
+
+ boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
+ boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
+ if (!anAttr)
+ return thePrevious;
+ FeaturePtr aFeature = SketchPlugin_Sketch::getFeature(anAttr->object());
+ if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
+ return thePrevious;
+
+ boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
+ boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
+
+ DataPtr aData = aFeature->data();
+ boost::shared_ptr<GeomDataAPI_Point2D> aStartPoint =
+ boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
+ boost::shared_ptr<GeomDataAPI_Point2D> anEndPoint =
+ boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
+
+ boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aStartPoint->x(), aStartPoint->y());
+ boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(anEndPoint->x(), anEndPoint->y());
+ boost::shared_ptr<GeomAPI_Pnt> aFlyoutPnt = aFlyOutAttr->isInitialized() ?
+ sketch()->to3D(aFlyOutAttr->x(), aFlyOutAttr->y()) :
+ boost::shared_ptr<GeomAPI_Pnt>();
+
+ // value calculation
+ boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
+ boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
+ double aValue = aValueAttr->value();
+
+ boost::shared_ptr<GeomAPI_AISObject> anAIS = thePrevious;
+ if (!anAIS)
+ anAIS = boost::shared_ptr<GeomAPI_AISObject>(new GeomAPI_AISObject);
+ anAIS->createDistance(aPoint1, aPoint2, aFlyoutPnt, aPlane, aValue);
+ return anAIS;
+}
+
+void SketchPlugin_ConstraintLength::move(double theDeltaX, double theDeltaY)
+{
+ boost::shared_ptr<ModelAPI_Data> aData = data();
+ if (!aData->isValid())
+ return;
+
+ boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
+ boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
+ aPoint1->setValue(aPoint1->x() + theDeltaX, aPoint1->y() + theDeltaY);