elmesque 
This crate is an attempt at porting Elm's incredibly useful, purely functional std graphics modules. Its useful for all kinds of 2D freeform graphics and UI design.
See the docs or checkout the example.
Visit elm-lang.org to learn more about Elm.
All credit and thanks goes to Evan Czaplicki for all algorithms included within.
Ported to Rust by Mitchell Nordine.
Usage
Add elmesque to your cargo dependencies like so.
[dependencies]
elmesque = "*"