Mbezier.coffee

class Mbezier
	constructor: ->
	update: (fn) ->
		for param in ['points', 'colors']
			if not this[param] then this[param] = {}
			if param is 'points' then k = 'xy'
			if param is 'colors' then k = 'rgba'
			for c in k.split('')
				this[param][c] = fn(param, c)

o = []
n = 13
v = 0.0001

sin = (val, scale) -> 2 * (Math.sin(@noise(val) * @PI) - 1) * scale
	
@setup = -> 
	@createCanvas 480, 360 
	for i in [0..n-1]
		o[i] = new Mbezier() 
		o[i].update (param, l)->
			if l is 'x' then r = @random(@width)
			if l is 'y' then r = @random(@height)
			if l is 'r' or l is 'g' or r is 'b' or r is 'a' then r = @random(255)
			{offset: Math.random(), val: r}
	
@draw = ->
	@background 0
	for oo in o
		@stroke oo.colors.r.val, oo.colors.g.val, oo.colors.b.val
		@noFill()
		@bezier oo.points.x.val[0], oo.points.y.val[0], oo.points.x.val[1], oo.points.y.val[1], oo.points.x.val[2], oo.points.y.val[2], oo.points.x.val[3], oo.points.y.val[3]
		oo.update (param, l)->
			offset = oo[param][l].offset + v
			if l is 'x' then r = sin(oo[param][l].offset, @width)
			if l is 'y' then r = sin(oo[param][l].offset, @height)
			if l is 'r' or l is 'g' or r is 'b' or r is 'a' then r = sin(oo[param][l].offset, 255)
			{offset: offset, val: r}