Function update_camera

pub fn update_camera(
    window_q: Query<'_, '_, &Window>,
    ev_motion: EventReader<'_, '_, MouseMotion>,
    ev_scroll: EventReader<'_, '_, MouseWheel>,
    input_mouse: Res<'_, ButtonInput<MouseButton>>,
    query: Query<'_, '_, (&mut PanOrbitCamera, &mut Transform, &Projection)>,
)

Camera update routine.