# the logo

Some different sizes' logos are needed.

## license

<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.

## the process of creation

No professional designers are here. Thus the following steps involve many programer styles. :-)

1. use excalidraw and export png and svg.

   ```bash
   # results
   logo.excalidraw
   logo.png
   logo.svg
   ```

2. manually edit the `logo.svg` and make background transparent.

   ```bash
   # results
   logo-transparent.svg
   ```

3. use python library [`svgutils`](https://github.com/btel/svg_utils) to make a strictly square figure. The [doc](https://svgutils.readthedocs.io/en/latest/tutorials/composing_multipanel_figures.html) is very useful.

   ```python
   from svgutils.compose import *
   def get_standard_300x300(file_name):
       fig = Figure(300, 300,
           Panel(
               SVG(file_name),
           ).move(-3, 12),
       )
       return fig

   get_standard_300x300('logo-transparent.svg').save('300x300.svg')

   # def get_other_size_from_standard(file_name, px):
   #     fig = Figure(px, px,
   #         Panel(
   #             SVG(file_name).scale(px/300.0),
   #         ).move(-3*px/300.0, 12*px/300.0),
   #     )
   #     return fig

   # get_other_size_from_standard('logo.svg',256).save('256x256.svg')
   ```

   ```bash
   # results
   300x300.svg
   ```

4. use `inkscape` command line to get different sizes' `.png` files.

   ```bash
   inkscape 300x300.svg -o 300x300.png

   inkscape 300x300.svg -o 50x50.png -w 50 -h 50

   inkscape 300x300.svg -o 64x64.png -w 64 -h 64
   inkscape 300x300.svg -o 256x256.png -w 256 -h 256
   ```

   ```bash
   # results
   50x50.png
   64x64.png
   256x256.png
   ```