ppmwriter

Usage

```rust use std::fs::File; use std::io::Write; use std::path::Path;

use ppmwriter::Writer;

fn main() { let name = "image.ppm"; let mut ppm = Writer::new(69, 35, 2301).unwrap();

for n in 0..ppm.size {
    if n % 2 == 0 {
        ppm.write_pixel(ppm.maxval, 0, ppm.maxval);
    } else {
        ppm.write_pixel(0, 0, 0);
    }
}

let path = Path::new(name);
let mut file = match File::create(path) {
    Err(why) => panic!("Couldn't create {}: {}", path.display(), why),
    Ok(file) => file,
};

if let Err(why) = file.write_all(ppm.borrow_buffer()) {
    panic!("Couldn't write to {}: {}", path.display(), why)
}

} ```