turtle 1.0.0-rc.1

Learn the Rust language by creating animated drawings!
Documentation 
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extern crate turtle;

use turtle::{Turtle, Color};

fn main() {
    let mut turtle = Turtle::new();

    turtle.drawing_mut().set_background_color("light grey");
    turtle.set_speed(20);
    turtle.set_pen_size(2.0);
    for i in 0..290 {
        turtle.set_pen_color(Color {
            red: (i as f64 / 300.0 * 4.0) * 255.0 % 255.0,
            green: 255.0,
            blue: 255.0,
            alpha: 1.0,
        });
        turtle.forward(i as f64);

        turtle.right(60.0);
    }
}