fogleman/primitive compiled from Go to JavaScript using GopherJS.

See it in action here: https://kdzwinel.github.io/primitive/

I've created a simplified version of main.go file (main-js.go) that exposes API to JavaScript and consumes images encoded with Base64. For sample use, see index.html.

To compile the project to JavaScript use gopherjs build main-js.go. Note that included main-js.hand.js was manually optimized (yes, original performance was even worse), so expect output from GopherJS to be 4x times slower. There is still plenty opportunity to make it faster (rewrite parts of generated code, minify JS, use web worker, web assembly, etc.). This project is just a PoC.