# ShowDisk.py
""" Ilustrates the procedure DrawDisk.
"""
from simpleGraphics import *

# Create a figure with a plot window that displays
# the region -d<=x<=d, -d<=y<=d
d = 8
MakeWindow(8,bgcolor=BLACK,labels=False)

# Draw six disks that are tangent to each other with centers
# on the x-axis.
# Initial (leftmost) disk.
x = -4.0
r = 4.0
DrawDisk(x,0,r,color=MAGENTA,stroke=0)
# Disk 2
# The center of the next disk is 1.5r to the right of the
# center of the current disk.
x = x + 1.5*r
r = r/2
DrawDisk(x,0,r,color=CYAN,stroke=0)
# Disk 3
x = x + 1.5*r
r = r/2
DrawDisk(x,0,r,color=MAGENTA,stroke=0)
# Disk 4
x = x + 1.5*r
r = r/2
DrawDisk(x,0,r,color=CYAN,stroke=0)
# Disk 5
x = x + 1.5*r
r = r/2
DrawDisk(x,0,r,color=MAGENTA,stroke=0)
# DIsk 6
x = x + 1.5*r
r = r/2
DrawDisk(x,0,r,color=CYAN,stroke=0)
ShowWindow()