#!/usr/bin/python3.5

from PIL import Image
import sys
import time

WIDTH = 500
HEIGHT = 500

def print_usage():
        print ('Usage: led_color.py RED GREEN BLUE TOP_BRIGHTNESS')
        sys.exit(0)

def main():
    if len(sys.argv) != 5:
            print_usage()

    MAX_R = int(sys.argv[4])
    MAX_G = int(sys.argv[4])
    MAX_B = int(sys.argv[4])

    R = int(sys.argv[1])
    G = int(sys.argv[2])
    B = int(sys.argv[3])
    TB = int(sys.argv[4])

    for BR in range(1,TB+1):
        OUT_R = int(BR * R / MAX_R)
        OUT_G = int(BR * G / MAX_G)
        OUT_B = int(BR * B / MAX_B)

        print("red: {}, green: {}, blue: {}".format(OUT_R, OUT_G, OUT_B))

        img = Image.new("RGB", (WIDTH,HEIGHT), (OUT_R,OUT_G,OUT_B))
        img.show()
        time.sleep(0.1)


if __name__ == "__main__":
        main()