Attractors in Rust. See Paul Bourke's site on Peter de Jong attractors for an explanation. All code is commented. This implementation is tested on *nix only.

rustc -C opt-level=3 main.rs

Three color functions are provided:

• color::amber: monochromatic shades of amber on a white background
• color::sparks: monochromatic shades of orange on a black background
• color::heat: heat-map-inspired; black->blue->cyan->green->yellow->red->white
• colors::viridis: accurate recreation of ColorBrewer's viridis
• colors::blue_purple: black->blue->purple

The fourth argument to make_image_data in the file module takes a color function. Any function that fits

fn(u8) -> [u8; 3]

works (takes a density from 0-255 and returns [r, g, b]).

To see a test image for a color function, you can use the function

file::test_color(color: fn(u8) -> [u8; 3], file_name: &'static str) -> Result<()>

and get an image like this (for viridis):

• add new attractor functions
• allow for writing to more than just PPM