Boston Python Workshop 4/ColorWall: Difference between revisions
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See the [http://openhatch.org/wiki/Boston_Python_Workshop_4/Friday Friday setup instructions]. |
See the [http://openhatch.org/wiki/Boston_Python_Workshop_4/Friday Friday setup instructions]. |
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== |
==Handout== |
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[[Boston_Python_Workshop_4/ColorWall_handout| ColorWall handout]]: goals and cheat sheet. |
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* Have fun experiment with and creating graphical effects. |
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* Practice using functions and classes. |
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* Get experience with graphics programming using the Tkinter GUI toolkit. |
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<hr /> |
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==Suggested exercises== |
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| ⚫ | |||
<ul> |
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<li> |
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Find and change the colors used in the <code>Checkerboards</code> effect, and re-run the effect: |
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[[Boston Python Workshop 4|« to the Workshop home page]] |
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<pre> |
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python run.py Checkerboards |
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</pre> |
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Then change the line |
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<pre> |
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if (x + y + i) % 2 == 0: |
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</pre> |
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to |
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<pre> |
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if (x + y + i) % 3 == 0: |
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</pre> |
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re-run the effect, and see what changed. |
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</li> |
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<li> |
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Find and change the color of the columns in the <code>Matrix</code> effect, and re-run the effect: |
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<pre> |
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python run.py Matrix |
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</pre> |
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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. |
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</li> |
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<li> |
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Walk through <code>Twinkle</code>. Find explanations of the <code>random.randint</code> and <code>random.uniform</code> functions in the online documentation at |
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http://docs.python.org/library/random.html. |
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Experiment with these functions at a Python prompt: |
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<pre> |
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import random |
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random.randint(0, 1) |
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random.randint(0, 5) |
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random.uniform(-1, 1) |
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</pre> |
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Then experiment with the numbers that make up the hue and re-run the effect: |
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<pre> |
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python run.py Twinkle |
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</pre> |
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</li> |
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<li> |
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Write your own effects! |
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</li> |
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</ul> |
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==Some Useful Links== |
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If you choose to use HSV colors you define instead of the dictionary, you may find some of the following useful: |
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* [http://www.yafla.com/yaflaColor/ColorRGBHSL.aspx A graphical HSV color picking website] |
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* [http://en.wikipedia.org/wiki/HSL_and_HSV HSV on Wikipedia] |
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* [http://docs.python.org/library/random.html Python random library] |
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* [http://docs.python.org/library/time.html Python time library] |
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| ⚫ | |||
Latest revision as of 06:28, 18 August 2013
Program graphical effects for a ColorWall using the Tkinter GUI toolkit. See the ColorWall in action here.
Setup
See the Friday setup instructions.
Handout
ColorWall handout: goals and cheat sheet.