# Obamicon.py
#
# By Deepak Kumar (Bryn Mawr)
# Create an Obama-icon style image from any given image.
# Based on Shepard fairey's iconic Obama "HOPE" poster.
#
# How it works
#
# Each pixel is sampled and placed in one of 4 colors depending
# upon its total color saturation value...sum of RGB values.
#
# It assigns roughly equal intervals for each ofthe 4 colors. You can
# play with that to get different effects.
from myro import *

darkBlue = (0, 51, 76)
red = (217, 26, 33)
lightBlue = (112, 150, 158)
yellow = (252, 227, 166)

def main():
    # get the picture
    print "Select a picture..."
    p = makePicture(pickAFile())
    show(p)

    # process it
    for pixel in getPixels(p):
        r, g, b = getRGB(pixel)
        total = r+g+b
        if total < 182: 
            setRGB(pixel, darkBlue)
        elif total < 364:
            setRGB(pixel, red)
        elif total < 546:
            setRGB(pixel, lightBlue)
        else:
            setRGB(pixel, yellow)
    # Display resulting picture
    repaint()
    
main()