       particle.render ctx
 
     ctx.translate width/2, height/2
+    ctx.scale 1/scale, 1/scale
     ctx.rotate -rotation
     ctx.translate -width/2, -height/2
     ctx.translate -offset.x, -offset.y

  MAX_MASS = 10
  PAN_SPEED = 10
  ROTATE_SPEED = 0.01

  width = window.innerWidth
  height = window.innerHeight
  offset = new Vector(0, 0)
  rotation = 0

  $('canvas').attr 'width', width
  $('canvas').attr 'height', height


  $(window).keydown (e) ->
    e.preventDefault()
    if e.keyCode == 88
      scale *= SCALE_SPEED
    if e.keyCode == 90
      scale /= SCALE_SPEED
    if e.keyCode == 81
      rotation -= ROTATE_SPEED
    if e.keyCode == 69
