Initial commit.

.gitignore

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+/target/

Cargo.lock

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+[root]
+name = "loldog"
+version = "0.1.0"
+dependencies = [
+ "ansi_term 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "ansi_term"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+

Cargo.toml

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+[package]
+name = "loldog"
+version = "0.1.0"
+authors = ["logaritmisk <anders.e.olsson@gmail.com>"]
+
+[dependencies]
+ansi_term = "0.9"

src/main.rs

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+extern crate ansi_term;
+
+use std::f32::consts::PI;
+use ansi_term::Colour::RGB;
+
+fn main() {
+    let (red, green, blue) = rainbow(0.1, 0);
+
+    println!("{}", RGB(red, green, blue).paint("Steel blue"));
+}
+
+fn rainbow(frec: f32, i: usize) -> (u8, u8, u8) {
+    let red = (f32::sin(frec * i as f32) * 127.0 + 128.0) as u8;
+    let green = (f32::sin(frec * i as f32 + 2.0 * PI / 3.0) * 127.0 + 128.0) as u8;
+    let blue = (f32::sin(frec * i as f32 + 4.0 * PI / 3.0) * 127.0 + 128.0) as u8;
+
+    (red, green, blue)
+}