Function imageproc::drawing::draw_filled_circle_mut

pub fn draw_filled_circle_mut<I>(
    image: &mut I, 
    center: (i32, i32), 
    radius: i32, 
    color: I::Pixel
) where
    I: GenericImage,
    I::Pixel: 'static, 

Draw as much of a circle, including its contents, as lies inside the image bounds.