import os
os.chdir("/Users/koc/Desktop/wm")
from cImage import *

# -------- Test Functions --------
def MakeLowerBitsZero(im1,x):
    n = im1.getWidth()
    m = im1.getHeight()
    im2 = EmptyImage(n,m)
    for i in range(n):
        for j in range(m):
            p = im1.getPixel(i,j)
            r = p.getRed()
            g = p.getGreen()
            b = p.getBlue()
            newr = x & r
            newg = x & g
            newb = x & b
            newp = Pixel(newr,newg,newb)
            im2.setPixel(i,j,newp)
    return(im2)



# -------- Main Program --------

im1 = FileImage("leo1.gif")
n = im1.getWidth()
m = im1.getHeight()
mywin1 = ImageWin("file1",n,m)
im1.draw(mywin1)

im2 = MakeLowerBitsZero(im1,252)
im4 = MakeLowerBitsZero(im1,240)
im6 = MakeLowerBitsZero(im1,192)
im7 = MakeLowerBitsZero(im1,128)

mywin2 = ImageWin("file2",n,m)
mywin4 = ImageWin("file4",n,m)
mywin6 = ImageWin("file6",n,m)
mywin7 = ImageWin("file7",n,m)

im2.draw(mywin2)
im4.draw(mywin4)
im6.draw(mywin6)
im7.draw(mywin7)