ZoomIn method

@override void ZoomIn()

Implementation

@override
void ZoomIn() {
  // ServicesRF.instance.RFN;
  try {
    final camera = _controller.camera;
    final zoom = min(camera.zoom + 1, 20.0);
    _controller.move(camera.center, zoom);
    debugPrint("zoom in");
  } catch (e) {
    print(e);
  }
}