/// result is sum of coordinates of this and the given argument
const std::shared_ptr<GeomAPI_XY> added(const std::shared_ptr<GeomAPI_XY>& theArg);
+ /// result is difference between coordinates of this and the given argument
+ const std::shared_ptr<GeomAPI_XY> decreased(const std::shared_ptr<GeomAPI_XY>& theArg);
/// result is coordinates multiplied by the argument
const std::shared_ptr<GeomAPI_XY> multiplied(const double theArg);