# LetterZPpm Example
# Draw the letter Z in a PPM file.
# Use light pink (255,230,230) for background color.
# Use navy (0,0,128) for foreground color.

# Open output file
fout = open("z.ppm", "w")

# Write light pink background pixel
def draw_background_pixel( ):
    fout.write("255 230 230   ")

# Write navy foreground pixel
def draw_foreground_pixel( ):
    fout.write("0 0 128   ")

def write_graphics_file_header( ):
    fout.write("P3 200 200 255\n")

def draw_top_space( ):
    for y in range(0, 30):
        for x in range(0, 200):
            draw_background_pixel( )
        fout.write("\n")

def draw_horizontal_bar( ):
    for y in range(30, 50):
        for x in range(0, 40):
            draw_background_pixel( )
        for x in range(40, 160):
            draw_foreground_pixel( )
        for x in range(160, 200):
            draw_background_pixel( )
        fout.write("\n")

def draw_diagonal_bar( ):
    for y in range(50, 140):
        for x in range(0, 180 - y):
            draw_background_pixel( )
        for x in range(180 - y, 210 - y):
            draw_foreground_pixel( )
        for x in range(210 - y, 200):
            draw_background_pixel( )
        fout.write("\n")

def draw_bottom_space( ):
    for y in range(140, 200):
        for x in range(1, 200):
            draw_background_pixel( )
        fout.write("\n")
	
write_graphics_file_header( )
draw_top_space( )
draw_horizontal_bar( )
draw_diagonal_bar( )
draw_horizontal_bar( )
draw_bottom_space( )

fout.close( )