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Is it possible to make python addon as a modifier?

I just would like to make some deformation modifiers. But I know only python.

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No, the modifier API is currently not exposed via Python.

Arguably, Python is too slow to do realtime operations on mesh data which can have millions of faces.

Though there is some possibility of something faster using Python, NumPy for example or maybe eventually even PyPy.

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    $\begingroup$ Whilst this is not the right place to ask, I'd love to know if there are any plans to open modifiers up via python/numpy in the near future (e.g. the 2.8 workflow release). There are a lot of great Blender addons that would arguably work better as addons, but the need to know the c source and distribute a custom release of Blender is a large barrier to making them that way. $\endgroup$ – MrFlamey Sep 30 '15 at 2:25
  • $\begingroup$ Is this answer still valid for current blender 2.78? What's the status for 2.8? $\endgroup$ – cjorssen May 7 '17 at 12:00
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    $\begingroup$ Digging through Modifier and it's related documents, this still doesn't seem to be exposed. There's no APIs for adding/removing custom modifiers and I don't see any modifier registration documentation. $\endgroup$ – Coburn Nov 18 '17 at 6:40
  • $\begingroup$ It also looks like the devs are currently more focussed on the image/preview browser, and the custom data block data update. $\endgroup$ – Coburn Nov 18 '17 at 6:41
  • $\begingroup$ This is a non-goal. Its not a question of focus. $\endgroup$ – ideasman42 Nov 18 '17 at 6:45

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