Boston Python Workshop/Saturday/ColorWall

Program graphical effects for a ColorWall using the Tkinter GUI toolkit. See the ColorWall in action here.

Setup
See the Friday setup instructions.

Goals

 * Have fun experiment with and creating graphical effects.
 * Practice using functions and classes.
 * Get experience with graphics programming using the Tkinter GUI toolkit.

Suggested exercises
  Find and change the colors used in the  effect, and re-run the effect:

python run.py Checkerboards

Then change the line

if (x + y + i) % 2 == 0:

to

if (x + y + i) % 3 == 0:

re-run the effect, and see what changed.   Find and change the color of the columns in the  effect, and re-run the effect:

python run.py Matrix

Each column that we see on the wall corresponds to a  object. Add some randomness to the color used by each column (the variable whose value you changed above) using the  function, re-run the effect, and see what happens.   Walk through. Find explanations of the  and   functions in the online documentation at

http://docs.python.org/library/random.html.

Experiment with these functions at a Python prompt:

import random random.randint(0, 1) random.randint(0, 5) random.uniform(-1, 1)

Then experiment with the numbers that make up the hue and re-run the effect:

python run.py Twinkle   Write your own effects!  

Some Useful Links
If you choose to use HSV colors you define instead of the dictionary, you may find some of the following useful:
 * A graphical HSV color picking website
 * HSV on Wikipedia
 * Python random library
 * Python time library

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