polytree/polytree.coffee

# PolyTree, intended to be loaded as a module

import {p5, p5loaded, p5vector} from './lib/loadp5.js'
import Deque from './deque.js'  # Weird to write it this way when
                                # it's implemented in deque.coffee, but oh well.

sketch = (p) ->
   leaves = new Deque()
   leaves.insertRight p.createVector 0
   sides = 5
   length = 20
   steps = (p5vector.fromAngle(i*p.TAU/sides).mult length for i in [0...sides])

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

   p.draw = =>
      current = leaves.removeRight()
      p.point current
      for step in steps
         leaves.insertLeft current.copy().add(step)

show = () ->
   P5 = new p5 sketch

p5loaded.then show