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Molecular Script Update


PyroEvil gives us an update on his add-on: Molecular Script.


I want to share with everybody some test I did with my new molecular script. Probably many of you see my entry to the contest "Let's break some stuff" with this video:

Now I rewrite it from scratch with a UI to make it more user friendly. I did not finish it yet (but get nice result with it) , but a "alpha version" is available on my blog for testing. Now I get a big headhash by trying to convert it to Cython and get a speed increase ( 10-100x faster on many code ). Any donation to support are welcome.



About the Author

Avatar image for Bart Veldhuizen
Bart Veldhuizen

I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Head of Community at Sketchfab.


  1. That's awesome! Really looking forward to a full version of it, as well as possible offsprings that extend the functionality even further!

  2. Thanks for all comment. Probably a simple mesher can be one of my next addon project if no developpement of this coming soon from the Blender team. I see a lot of download of my addon ( 230 at this time a wrote the comment ) but not a lot of feedback. I suppose they need times to try it well. So any constructive comment/feedback about anything are welcome ( my addon , my blog , my videos ... etc ).

  3. Its great but we really need a fast mesh/surface_creator, there has been a few scripts but for any scene but none really suitable for high amounts of particles or animation.

    So far the scripts we do have use meta-balls, but meta-balls in blender are very old ans slow, however if we could get a GPU accelerated meta balls we would create fluid quickly and handle large particle counts. A quick google search shows that GPU accelerated meta balls are possible.

      • You are doing a great job ;), lets hope a developer becomes inspired by your work and created a new GPU accelerated meta balls.

        Maybe Nvidia will have source code examples some place, they normally have lots of information and examples on this sort of stuff.

    • and yes , metaball are very slow. I did some test today and the result are :
      - 1000 metaball it's take 10 sec to calculate
      - 10 000 is like 1-2 minutes
      - 100 000 .... I left it calculate for 3hours and they never finish

      • If you'll google, you can find two addons on blenderartists, trying meshing through metaballs and both come to same conclusion as you - computation time grows exponentially to ball count.
        I guess it requires another algorithm for metaball, where, for instance, balls could be separated by voxels beforehand, and balls outside of neighbour voxels won't affect computation of current voxel being computed.
        Unfortunately my math probably is worse than yours :)

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