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.