'''
    graphics2.py
    Jeff Ondich, 11 October 2018

    Started in Pascal on 1/25/95
    Ported to C++, Java, and Python
    Adapted to Python 3 by Jed Yang in 2016

    1. Try it.

    2. Identify which corner of the polygon has which coordinates
       as listed in the source code.

    3. Redesign the polygon to be a triangle or a rectangle.
       Can you do a regular hexagon?

    4. What is the default background color of a GraphWin object?
'''

from graphics import *

def main():
    window = GraphWin('Polygon demo', 600, 500)

    polygon = Polygon(Point(200, 100),
                      Point(400, 100),
                      Point(500, 200),
                      Point(400, 300),
                      Point(200, 200))

    polygon_color = color_rgb(255, 0, 0)
    polygon.setOutline(polygon_color)

    # Some come colors have pre-defined names so you don't have to mix RGB values
    # with color_rgb(). But then you have less control over the resulting color.
    polygon_fill_color = 'yellow'
    polygon.setFill(polygon_fill_color)
    # What is the difference between .setOutline() and .setFill()?

    polygon.draw(window)
    # Can you .draw() first and then .setFill() later?

    # Wait for user input.
    print('Hit any key to quit')
    keyResponse = window.getKey()
    print('You hit', keyResponse)
    # Which window needs input focus for this to work?  Why?
    # Which keys work?

main()