Ryan Alexander

@notlion

Creating audiovisual tools and art. Seeking practices that better the world in small ways.

San Franciso
Joined August 2007

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  1. Pinned Tweet
    14 Mar 2018

    Woot! New website up at ! Now mobile friendly and with pinchy-zoomy image previews! ✌️^__^

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  2. Jan 27

    Added some vertex based ambient-occlusion to the 3D CA demo shader in pst-alpha. Only 3 checks per vertex, and it looks pretty good!

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  3. Jan 23

    And here's an optimized version of the original 64^3 CA without internal faces. Should run faster now on integrated GPUs

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  4. Jan 22

    Optimized out drawing of internal faces. It runs fast on the Oculus Quest now! (Click "Enter VR" on bottom right)

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  5. Jan 22
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  6. Jan 22

    Also if anyone knows any other cool generations CA rules, I'd love to try them. This 445 rule comes from

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  7. Jan 22

    Shaders are now linkable in pst-alpha! Here's a 3d cellular automata example:

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  8. Jan 21

    Oh also, vertex/fragment varyings are now explicit. You could always add your own, but now it should be obvious.

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  9. Jan 21

    New updates to pst-alpha✨ - Added a common source tab - Sim size and vertex count configurable via - Simplified shader function arguments (all outs) - Removed particle coord attribs (just use gl_VertexID)

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  10. Jan 17

    Annnd video compression totally trashed that.. so here’s a screenshot🤞

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  11. Jan 17

    Sessions in the galaxy connected by a pleasing curve. All I had to do was solve a tridiagonal system of linear equations! 🤓

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  12. 12 Dec 2019

    Really intriguing sonification of linear vs hermite interpolation.

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  13. Retweeted
    6 Nov 2019

    I'm booking my freelance schedule for 2020, I'll be available mid Feb onwards for retweet pls

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  14. 30 Oct 2019

    Ooo that new dark mode 🧛🏿💋

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  15. Retweeted
    30 Oct 2019

    Last chance to get your Sun Seed Kit 🌈✨ Our campaign ends at midnight! Thank you everyone who has pledged and shared and supported our art! 💗

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  16. Retweeted
    26 Oct 2019

    I just sent out a new Cuttle newsletter about how we used Cuttle's combination of direct manipulation and programmability to design Sun Seeds.

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  17. 21 Oct 2019

    Whoa! We're at capacity for our first batch of Sun Seeds! Thanks to everyone who's placed an order so far! If you were thinking about it but haven't yet, order today for Dec 15th delivery!

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  18. 16 Oct 2019

    It can be difficult to make out some of the Sun Seed forms without motion, so I made animated GIFs for each of them. Lotus pictured here.

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  19. 15 Oct 2019

    Real protected bike lanes and no private cars on Market Street! This is great news!

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  20. 15 Oct 2019

    Whoa! Met our goal within a few hours! Thanks everyone! 🥳

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  21. 15 Oct 2019

    Sun Seed “daisy”. Kits for this and 5 other new designs are now available! 🌸🌼 Collab with

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