zoomOut method
Zooms out from the current position.
Implementation
MapPosition zoomOut() {
final newZoomLevel = max(zoomlevel - 1, 0);
return MapPosition._(
latitude: _latitude,
longitude: _longitude,
zoomlevel: newZoomLevel,
indoorLevel: indoorLevel,
rotation: _rotation,
rotationRadian: _rotationRadian,
scale: 1,
focalPoint: null,
projection: PixelProjection(newZoomLevel),
);
}