A simple Turtle graphics system implemented using a Free monad, intended for educational purposes. It comes with an interpreter that translates programs in the Turtle language to HTML canvas graphics.

main :: Effect Context2D main = CanvasInterpreter.render "turtleCanvas" do color Purple star forward 40.0 left 100.0 color Red star star = do penDown right 144.0 forward 100.0 right 144.0 forward 100.0 right 144.0 forward 100.0 right 144.0 forward 100.0 right 144.0 forward 100.0 penUp

In your shell, type:

npm install npm run build npm run bundle 

Then point your browser to ./html/index.html.