+ std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
+ std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
+ if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
+ return thePrevious; // not possible to show length because points are not defined
+
+ std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
+ std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
+ std::shared_ptr<GeomAPI_Pnt> aFlyoutPnt = std::shared_ptr<GeomAPI_Pnt>();
+ if (aFlyOutAttr->isInitialized()) {
+ aFlyoutPnt = sketch()->to3D(aFlyOutAttr->x(), aFlyOutAttr->y());
+ } else {
+ std::shared_ptr<GeomAPI_Lin2d> aLine =
+ std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStartPoint->pnt(), anEndPoint->pnt()));
+ double aDist = aPoint1->distance(aPoint2)/5.;
+ std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
+ aFlyOutAttr->setValue(aFPnt);
+ aFlyoutPnt = sketch()->to3D(aFPnt->x(), aFPnt->y());
+ }
+ // value calculation
+ // TODO: has to be calculated on definition of reference object
+ double aDistance = aPoint1->distance(aPoint2);
+ std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
+ ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
+ double aValue = aDistance;
+ if (aValueAttr->isInitialized())
+ aValue = aValueAttr->value();
+ else
+ aValueAttr->setValue(aValue);
+ // End TODO
+
+ AISObjectPtr anAIS = thePrevious;
+ if (!anAIS)
+ anAIS = AISObjectPtr(new GeomAPI_AISObject);
+ anAIS->createDistance(aPoint1, aPoint2, aFlyoutPnt, aPlane, aValue);
+
+ // Set color from preferences
+ std::vector<int> aRGB =
+ Config_PropManager::color("Visualization", "length_color", LENGTH_COLOR);
+ anAIS->setColor(aRGB[0], aRGB[1], aRGB[2]);
+ return anAIS;