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some plugins for the image-processing-project einguteswerkzeug

License: MIT License

Python 98.13% Shell 1.87%

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implement a generator doing stuff with Bézier curves

https://en.wikipedia.org/wiki/B%C3%A9zier_curve

Before starting to implement this doing some reasearch about which (ideally lightweight) vector-graphics library could be usefull for this is necessary. Maybe Pycairo?? http://www.tortall.net/mu/wiki/CairoTutorial

plugin-meta-information (version, description, ...) is stored in wrong attributes

the version contains the description etc :

$ ./egw_plugin_rothko.py

        <class '__main__.Rothko'> rothko - None
        version : adaption of [RothkoBot](https://github.com/ZacharyDavis/RothkoBot), Copyright (c) 2017 Zachary Davis (plugin_iface_version : 0.4.0)
        author  : 0.1.2
        kwargs  : {'size': (800, 800), 'seed': None, 'palette': 'colors.txt', 'color1': None, 'color2': None, 'color3': None, 'color4': None}

usage selftest: <me> image_out [<int seed>]

implement --generator geopattern

There are already lots of ports of Jason Long's wonderfull geo_pattern (Ruby) available. Should be easy to adopt the python port by Bryan Veloso here for egw.

implement --generator watercolor

implement --filter retrolux

implement --generator pnoise

doing something with (perlin-) noise is a must-have. :) this issue is related to #2 but has a more playfull "non-serious-stuff" intention. ideal for playing around.

some inspirations / ideas:

https://medium.com/@yvanscher/playing-with-perlin-noise-generating-realistic-archipelagos-b59f004d8401

implement --generator codesim

https://github.com/erdavids/Simulated-Code

implement --generator noisylines

plots N lines with perlin noise. inspired by joy division's famous "unknown pleasures" cover.

kwargs: nr_lines, brush_size, bgcolor, color; x_step, y_noise (=> "roughness")

implement --generator mondrian

literature:
http://nifty.stanford.edu/2018/stephenson-mondrian-art/

migration to a class-based plugin-structure #DRY

CR: every generator should provide a 'size' argument (tuple) in its kwargs

implement --generator pnvfields

inspiration: https://rmarcus.info/blog/2018/03/04/perlin-noise.html

implement --filter puzzle (random deconstruction)

implement --generator offsetquads

--filter pixesort doesn't work with RGBA (only with RGB)

Traceback (most recent call last):
  File "/home/s3h10r/development/einguteswerkzeug/tmp/venv_egw/bin/egw", line 69, in <module>
    main(args)
  File "/home/s3h10r/development/einguteswerkzeug/tmp/venv_egw/lib/python3.6/site-packages/einguteswerkzeug/core/__init__.py", line 584, in main
    img = _apply_filters(image=source, filters = apply_filters, filters_args = [])
  File "/home/s3h10r/development/einguteswerkzeug/tmp/venv_egw/lib/python3.6/site-packages/einguteswerkzeug/core/__init__.py", line 433, in _apply_filters
    img = PLUGINS_FILTERS[edit_filter].run(**kwargs)
  File "/home/s3h10r/development/einguteswerkzeug/tmp/venv_egw/lib/python3.6/site-packages/einguteswerkzeug/core/../plugins/filters/pixelsort.py", line 43, in run
    return _do_pixelsort(image, algo)
  File "/home/s3h10r/development/einguteswerkzeug/tmp/venv_egw/lib/python3.6/site-packages/einguteswerkzeug/core/../plugins/filters/pixelsort.py", line 87, in _do_pixelsort
    [r, g, b] = img_in_pixels[x, y]
ValueError: too many values to unpack (expected 3)

test_plugin-params.sh:

egw --generator nlines --clockwise --params-generator='{"seed" : 5269546439996500824, "nr_lines" : 9, "x_step" : 20, "thickness" : 6, "color" : [0,255,0,255], "bg_color" : [0,0,200,255]}' -o $FOUT  --filter quads,invert,oil,pixelsort --params-filter='{"mode" : 1, "iterations" : 256}{}{"brush_size" : 2, "roughness" : 50}' --config $CONFIG --template $TPL  --title "quad-filtered generator nlines (variant b), 2019 #einguteswerkzeug" --max-size 800 || exit 1
feh $FOUT

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