Method set_pixel

src/opencv/mod.rs:608–617

TODO test + bounce checking, duplicated code

(&mut self, x: usize, y: usize, newval: u8)

    // TODO test + bounce checking, duplicated code
    pub fn set_pixel(&mut self, x: usize, y: usize, newval: u8) {

        unsafe {
            let img = &(*self.buffer());
            let off = (y * self.widthstep() + x) as isize;

            let p = img.imagedata.offset(off) as *mut u8;
            *p = newval;
        }
    }


    // TODO test