PySolFC -- Python and SVG implementation issues

[Jan Kleks]

Shlomif is wondering how to implement SVG support using Python in PySolFC: https://github.com/shlomif/PySolFC/issues/3 Any ideas? I've read that it's possible to extend Python functionality using, for instance, C (https://docs.python.org/2/extending/extending.html), maybe this would be a solution? There also might be some performance benefits when using a lower level language, which I guess might be good for displaying and scaling SVG graphics.

[Jan Kleks]

Well, I have also found this Python SVG library: https://jugad2.blogspot.com/2014/03/svgfig-pure-python-svg-library.html

[Shlomi Fish]

Hi Jan,

On Sun, Apr 30, 2017 at 3:17 PM, Jan Kleks <wineb...@gmail.com> wrote:

Well, I have also found this Python SVG library: https://jugad2.blogspot.com/2014/03/svgfig-pure-python-svg-library.html

I'd imagine rendering SVG in pure-Python will be too slow especially considering the fact that I couldn't figure out a way to get tkinter running under pypy,

regards,

-- Shlomi
 

On Sunday, 30 April 2017 14:06:26 UTC+2, Jan Kleks wrote:

Shlomif is wondering how to implement SVG support using Python in PySolFC: https://github.com/shlomif/PySolFC/issues/3 Any ideas? I've read that it's possible to extend Python functionality using, for instance, C (https://docs.python.org/2/extending/extending.html), maybe this would be a solution? There also might be some performance benefits when using a lower level language, which I guess might be good for displaying and scaling SVG graphics.

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Shlomi Fish http://www.shlomifish.org/

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[Shlomi Fish]

Hi Jan and all,

On Sun, Apr 30, 2017 at 3:06 PM, Jan Kleks <wineb...@gmail.com> wrote:

Shlomif is wondering how to implement SVG support using Python in PySolFC: https://github.com/shlomif/PySolFC/issues/3 Any ideas?

Perhaps we can take a look at how https://www.kde.org/applications/games/kpatience/ is doing that for some ideas.
 

I've read that it's possible to extend Python functionality using, for instance, C (https://docs.python.org/2/extending/extending.html), maybe this would be a solution? There also might be some performance benefits when using a lower level language, which I guess might be good for displaying and scaling SVG graphics.

There are some other approaches for calling native code from python:

1. http://www.python.net/crew/theller/ctypes/

2. https://en.wikipedia.org/wiki/Cython

3. http://cffi.readthedocs.io/en/latest/

We probably should use an existing library in C for rendering the SVG.

 

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[Jan Kleks]

On Monday, 1 May 2017 19:47:23 UTC+2, Shlomi Fish wrote:

Perhaps we can take a look at how https://www.kde.org/applications/games/kpatience/ is doing that for some ideas.

I think Aisleriot (https://github.com/GNOME/aisleriot) uses SVG cards too.

Jan

[Shlomi Fish]

Hi!

Thanks for the pointer. It may be worthy of investigation as well.

Regards,

Shlomi

[Kyle Unverferth]

I started out using SVG for solitaire.gg, it was slow and painful, even on the web (which ostensibly has better SVG support than python). I "solved" the issue by just working with 400x300 raster cards, which is a ridiculous size. I'm working on loading smaller assets now - even though it's only 1MB of compressed images, it explodes to a ton of texture memory, ruining the game for people with shitty computers..

[Shlomi Fish]

Hi Kyle!

Thanks for sharing your experiences. I still would like to  investigate using SVG cards by rendering them first into bitmaps in a similar fashion to how kpat may do it.

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[Jan Kleks]

But maybe for the desktop app when using a C library for vector rendering (and possibly some OpenGL/Vulkan acceleration) that wouldn't be that much of a problem?