polytree/polytree.coffee

# PolyTree, intended to be loaded as a module

import {p5, p5loaded, p5vector} from './lib/loadp5.js'

sketch = (p) ->
   pos = null
   vel = null
   abs = Math.abs  # For convenience

   p.setup = =>
      p.createCanvas window.innerWidth, 575, p.WEBGL
      p.background 224
      p.frameRate 5
      pos = p.createVector p.width, p.height

   p.draw = =>
      if abs(pos.x) > p.width/2 or abs(pos.y) > p.height/2
         pos = p.createVector 0
         vel = p5vector.random2D().mult 32
      else
         pos.add vel
      p.point pos

show = () ->
   P5 = new p5 sketch

p5loaded.then show