hogesonline / svg_play

Making pretty generated SVGs in Python

Just call me Hoges!

I used to work in IT and then retrained as a teacher and haven't regretted it for a second. I teach computers and technology to all high school years from 7-12. The best thing about my job is that I get to play with robots and computer games and call it work. I'm going to start that textbook any day now.

👨🏻‍💻  About Me

• 🎓   Computer Science teacher at St Andrew's Cathedral School Sydney
• ✍️   Gonna write that textbook tomorrow
• 🔭 I’m currently working on trying to break down difficult concepts for teenage minds
• 💬 Ask me about generative art
• 🚲 I like going fast on my bike

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svg_play's Issues

arcs.py - simple fix

Hi Amanda,

I think the issue you had with this might be a simple fix...

line 29
n = random.randint(0,4) should be=> n = random.randint(0,3)

I've been playing around with your SVG ideas this week, I might have a fun little app (all Python) to share with you.
Pete

Corrections and a Jupyter notebook

Hi,
thanks for your programs. They are fun and interesting.

I noted some small problems:

a_bit_mondrian.py
Running it in python 3 gives an error in the random.choice function because colors is an iterable and not a list.
By changing line 14 to:
colors = list(color_nums.keys())
the problem is resolved.

double_pendulum.py
1- the PATH directive is not terminated properly which gives an XML error.
to correct simply change line 116 from:
path+= '" style="fill-opacity: 0; stroke-width: 2; stroke: green; filter: url(#glow);"'
to
path+= '" style="fill-opacity: 0; stroke-width: 2; stroke: green; filter: url(#glow);" />'

2- the filter is not applied because the tags in the filter definition are in lowercase instead of camelcase:
fegaussianblur must be change to feGaussianBlur
stddeviation to stdDeviation
femerge to feMerge
femergenode to feMergeNode

Funny thing, the lowercase tags works in a Jupyter notebook.

Speaking of Jupyter notebook, I put all your programs in a single Jupyter notebook to facilitate experimentation.
I included the notebook and a sample pdf file in the attached files.

sample.pdf
svg_play_notebook.zip

convert to python 3

 python 'a_bit_mondrian.py'
<svg viewBox="0 0 500 500" xmlns="http://www.w3.org/2000/svg">

Traceback (most recent call last):
  File "a_bit_mondrian.py", line 37, in <module>
    draw_mondrian(500, 500, COLORNUMS)
  File "a_bit_mondrian.py", line 18, in draw_mondrian
    col = random.choice(colors)
  File "/usr/lib/python3.6/random.py", line 261, in choice
    return seq[i]
TypeError: 'dict_keys' object does not support indexing