Function nannou::image::imageops::crop_imm

pub fn crop_imm<I>(
    image: &I, 
    x: u32, 
    y: u32, 
    width: u32, 
    height: u32
) -> SubImage<&I> where
    I: GenericImageView, 

Return an immutable view into an image The coordinates set the position of the top left corner of the crop.