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Program graphical effects for a ColorWall using the Tkinter GUI toolkit. See the ColorWall in action [http://vimeo.com/16522975 here].
==Setup==
See the [http://openhatch.org/wiki/Boston_Python_Workshop_3/Friday 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==
<ul>
<li>
Find and change the colors used in the <code>Checkerboards</code> effect, and re-run the effect:
<pre>
python run.py Checkerboards
</pre>
Then change the line
<pre>
if (x + y + i) % 2 == 0:
</pre>
to
<pre>
if (x + y + i) % 3 == 0:
</pre>
re-run the effect, and see what changed.
</li>
<li>
Find and change the color of the columns in the <code>Matrix</code> effect, and re-run the effect:
<pre>
python run.py Matrix
</pre>
Each column that we see on the wall corresponds to a <code>Column</code> object. Add some randomness to the color used by each column (the variable whose value you changed above) using the <code>random.random</code> function, re-run the effect, and see what happens.
</li>
<li>
Walk through <code>Twinkle</code>. Find explanations of the <code>random.randint</code> and <code>random.uniform</code> functions in the online documentation at
http://docs.python.org/library/random.html.
Experiment with these functions at a Python prompt:
<pre>
import random
random.randint(0, 1)
random.randint(0, 5)
random.uniform(-1, 1)
</pre>
Then experiment with the numbers that make up the hue and re-run the effect:
<pre>
python run.py Twinkle
</pre>
</li>
<li>
Write your own effects!
</li>
</ul>
==Some Useful Links==
If you choose to use HSV colors you define instead of the dictionary, you may find some of the following useful:
* [http://www.yafla.com/yaflaColor/ColorRGBHSL.aspx A graphical HSV color picking website]
* [http://en.wikipedia.org/wiki/HSL_and_HSV HSV on Wikipedia]
* [http://docs.python.org/library/random.html Python random library]
* [http://docs.python.org/library/time.html Python time library]
[[Boston Python workshop 2/Saturday projects|« Back to the Saturday project page]]
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Latest revision as of 13:15, 24 September 2011
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
Checkerboards
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
Matrix
effect, and re-run the effect:python run.py Matrix
Each column that we see on the wall corresponds to a
Column
object. Add some randomness to the color used by each column (the variable whose value you changed above) using therandom.random
function, re-run the effect, and see what happens. -
Walk through
Twinkle
. Find explanations of therandom.randint
andrandom.uniform
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: