Forrest O.'s Avatar

Forrest O.

@forresto.bsky.social

https://forresto.com/ (projects) https://cuttle.xyz/@forresto (parametric CAD for makers)

624 Followers  |  299 Following  |  320 Posts  |  Joined: 12.04.2023
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Posts by Forrest O. (@forresto.bsky.social)

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Some day one of these slop diagrams won't give itself away with melting dream writing, but not yet.

28.02.2026 08:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Icosahedron globe strip showing North and South America, now with lakes visible.

Icosahedron globe strip showing North and South America, now with lakes visible.

ObservableHQ/d3 code showing how to make lake "holes" in the land shapes.

ObservableHQ/d3 code showing how to make lake "holes" in the land shapes.

Fixed!
The idea: concat the lakes path to the land path, and use fill-rule: evenodd.
Found lakes geojson via @nvkelso/natural-earth-vector.
observablehq.com/@forresto/or...

27.02.2026 11:53 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Icosahedron globe strip showing North and South America, now with lakes visible.

Icosahedron globe strip showing North and South America, now with lakes visible.

ObservableHQ/d3 code showing how to make lake "holes" in the land shapes.

ObservableHQ/d3 code showing how to make lake "holes" in the land shapes.

Fixed!
The idea: concat the lakes path to the land path, and use fill-rule: evenodd.
Found lakes geojson via @nvkelso/natural-earth-vector.
observablehq.com/@forresto/or...

27.02.2026 11:53 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
12x12 multiplication table as packed circles, decomposed to primes

12x12 multiplication table as packed circles, decomposed to primes

I want to port my Observable notebooks to my own site. There are some fun experiments in there, and it would be nice to have that notebook authoring flow in my own space.
observablehq.com/@forresto/mu...

26.02.2026 06:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Icosahedral globe for pen plotting / Forrest O. | Observable Based on a version of Tomoko Fuse's 5-peice modular origami icosahedron. Playing with new big pen plotter at the work space. ... Icosahedral projections are available from d3-geo-polygon, along with other polyhedral projections. Play zone See @visionscarto/world-atlas-topojson

I faked them with a Noun Project icon on this project. πŸ™ˆ observablehq.com/@forresto/or...

26.02.2026 06:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I'm surprised there are no issues matching "lake" on that repo. Oh, and the repo is archived. Do any map heads know if there is an alternative with lakes?

26.02.2026 06:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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GitHub - topojson/world-atlas: Pre-built TopoJSON from Natural Earth. Pre-built TopoJSON from Natural Earth. Contribute to topojson/world-atlas development by creating an account on GitHub.

cc topojson/world-atlas @observablehq.com
github.com/topojson/wor...

25.02.2026 19:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

(aside, I'd like to share these on the family TV, but YouTube won't cast shorts. It's like... enforced solitary consumption.)

25.02.2026 17:37 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
YouTube
A huge wasp touches down in our backyard. YouTube

I really like Wes Hargis' series of illustrated stories of feral childhood in the 1970s.
youtube.com/shorts/8D4Fx...

25.02.2026 17:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Yeah... my feeds are very anti.

25.02.2026 13:42 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Maybe it's cheating to animate an optical illusion like this.
I like the Cuttle version, to dial in the parameters and find where the illusion is lost or found.

25.02.2026 10:52 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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rotating pips

24.02.2026 21:28 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I made it wavy by rotating the small squares. Catnip for parametric design... you can animate the parameters here: cuttle.xyz/@forresto/Ti...
#CuttleXYZ

24.02.2026 07:05 β€” πŸ‘ 11    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0

Still a daily player with my fam chat. πŸ˜ƒ
I'm wondering if you are saving all the scores in the db, or just the winning one. It could be interesting to have a view that sorts "solutions" by first play, second play...

23.02.2026 06:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

that's clearly a naΓ―ve baby chick (as opposed to a more jaded one)

20.02.2026 08:36 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Raukku is such a charming fellow. πŸ•ŠοΈ

12.02.2026 11:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Wes Cook and the Centralia McDonald's Mural A personal story about discovering a mural in a McDonald's, an unknown artist named Wes Cook, saving the mural, and a conference talk about the whole thing.

over a year ago, i gave a talk at the xoxo conference about a mural, a mcdonald’s, and a man. (but it was also secretly about life, and legacy, and meaning.)

finally, i’m blogging the full story, with behind-the-scenes details, and a video of the talk.

enjoy. cabel.com/wes-cook-and...

11.02.2026 19:04 β€” πŸ‘ 359    πŸ” 103    πŸ’¬ 24    πŸ“Œ 26

Helsinki transport had a phase last year where they demanded ID to make sure you weren't using someone else's ticket / phone. Felt wrong, but I didn't look up if it was legal.

08.02.2026 20:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Muppet Elmo with arms raised to orange column of light from Hakaniemi sunrise.

Muppet Elmo with arms raised to orange column of light from Hakaniemi sunrise.

Thursday sky was doing some kind of optical effect with the sunrise, and @jhilden.bsky.social got this picture, which I had to enhance with fuego Elmo.

07.02.2026 16:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Seems like that would be comms 101, but maybe the kids are like who?

04.02.2026 15:47 β€” πŸ‘ 37    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Hi! Alt CAD blue sky +1

04.02.2026 15:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Have they ever heard of the Streisand effect???

04.02.2026 15:30 β€” πŸ‘ 75    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

> πŸ† First high score of the day!
Does this mean the previous high score shown was somebody camping on the seed? Is the day UTC or device time?

28.01.2026 06:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

@val.town speaks deno and SQLite πŸ€”

28.01.2026 05:57 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Neat, I wonder about a good way for a group to share such a view.

27.01.2026 20:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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This is a reminder that every diagram from my book Projective Geometric Algebra Illuminated is available on Wikimedia Commons under the CC-BY-4.0 license. They can be freely used in slides, papers, books, Wikipedia articles, etc., with proper attribution.
commons.wikimedia.org/wiki/User:Er...

27.01.2026 02:36 β€” πŸ‘ 33    πŸ” 10    πŸ’¬ 0    πŸ“Œ 0
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The Mind-Bending Math Behind Spot It!, the Beloved Family Card Game The simple matching game has some deceptively complex mathematics behind the scenes

I found Projective Geometries by wondering how the card game Spot It! works.
www.smithsonianmag.com/science-natu...

27.01.2026 16:09 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

They also don't have video compression but...

27.01.2026 13:20 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I see your blocks but can I interest you in blocks AND wires?

27.01.2026 13:18 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"absolutely changed my life over the past 48 hours"

25.01.2026 09:24 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0