const int MIN_MAP_ZOOM_LEVEL = 0; ///< Minimum zoom level
const int MAX_MAP_ZOOM_LEVEL = 18; ///< Maximum zoom level
+const int MIN_VIEW_ZOOM_LEVEL = 2; ///< Minimum zoom level for MapView
const int MIN_MAP_SCENE_NORMAL_LEVEL = MAX_MAP_ZOOM_LEVEL + 1;
const int ZOOM_FPS = 30; ///< FPS for the zoom effect