Function imageproc::geometric_transformations::rotate_about_center

pub fn rotate_about_center<P>(
    image: &Image<P>, 
    theta: f32, 
    interpolation: Interpolation, 
    default: P
) -> Image<P> where
    P: Pixel + Send + Sync + 'static,
    <P as Pixel>::Subpixel: Send + Sync,
    <P as Pixel>::Subpixel: ValueInto<f32> + Clamp<f32>, 

Rotates an image clockwise about its center. The output image has the same dimensions as the input. Output pixels whose pre-image lies outside the input image are set to default.