rainbow maker jeah

rainbowmaker.js

rainbow_maker={
	num:25,
	act_num:0,
	center:128,
	width:127,
	phase:0,
	factor_red: 30,
	factor_green:6,
	factor_blue:2,
	freq:false,		
	RGB2Color: function(r,g,b){
		return '#' + this.byte2Hex(r) + this.byte2Hex(g) + this.byte2Hex(b);
	},
	byte2Hex: function(n){
		var nybHexString = "0123456789ABCDEF";
		return String(nybHexString.substr((n >> 4) & 0x0F,1)) + nybHexString.substr(n & 0x0F,1);
	},
	next: function(){
		if (!this.freq) { this.freq = Math.PI*2/this.num; }
		var i=this.act_num;
		var red   = Math.sin(this.freq*i+this.factor_red+this.phase) * this.width + this.center;
		var green = Math.sin(this.freq*i+this.factor_green+this.phase) * this.width + this.center;
 		var blue  = Math.sin(this.freq*i+this.factor_blue+this.phase) * this.width + this.center;
 		this.act_num++;
 		return this.RGB2Color(red,green,blue);
	}
}

rgbtools.py

#!/usr/bin/env python

import math

class rainbowmaker:
	def __init__(self):
		self.num=25
		self.act_num=0
		self.center=127
		self.width=128
		self.phase=0
		self.factor_red=30
		self.factor_green=6
		self.factor_blue=2
		self.freq=False
		
	def rgb2color(self,r,g,b):
		return "#" + str(hex(r))[2:] + str(hex(g))[2:] + str(hex(b))[2:]

	def next(self):
		if self.freq is False:
			self.freq=math.pi*2/self.num
		i=self.act_num
		red=math.sin(self.freq*i+self.factor_red+self.phase) * self.width + self.center
		green=math.sin(self.freq*i+self.factor_green+self.phase) * self.width + self.center
		blue=math.sin(self.freq*i+self.factor_blue+self.phase) * self.width + self.center
		self.act_num=self.act_num+1
		return int(red),int(green),int(blue)