this post was submitted on 11 Feb 2025
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I've messed with this dozens of times with various AI models that are generally good at abstractions with advanced prompting, custom diffusion settings outside of the typical, and some hacks in the model loader code. I seem to lack the vocabulary to describe the fundamental geometry of centrifugal gravity in the kind of depth required. Like how does one say that the road ahead curves up like a hill continuing overhead with the buildings anchored to...

I need language here that has unambiguous specificity and likely does not occur in any other context. Layperson verbosity will fail to get traction without fine tuning the model first. I prefer to explore what models can really do using settings and the prompts only.

Most of my vocabulary and understanding of geometry is limited to the Cartesian planes and CAD assemblies. Perhaps someone here has a better lexicon and doesn't mind sharing.

(Post image is from a Blender rendered video someone posted on YouTube about what life in an O'Neill cylinder might look like)

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[–] [email protected] 7 points 2 days ago* (last edited 2 days ago) (3 children)

I think you're looking for words like:

  • Prograde - In the direction of spin.

  • Retrograde - Against the direction of spin.

  • Nadirial or Anti-radial - Toward the center of rotation; "Up" in your centrifugal graviation model

  • Radial or Anti-Nadirial - Away from the center of rotation; "Down" in your model.

Throwing a bowling ball "prograde", it will experience greater "gravity" than normal. If you throw it retrograde, it will experience less gravity than normal, unless you throw it more than twice as fast as the prograde velocity, in which case it will experience more gravity.

[–] [email protected] 6 points 1 day ago (1 children)

Hey now - any directional system not making use of Turnwise and Widdershins is one I want no part of.

[–] [email protected] 4 points 1 day ago

Hey now - any directional system not making use of Turnwise and Widdershins is one I want no part of.

And obviously going toward the main hub of the spacecraft should be called “Hubwards.” And away from the main hub, out toward the edge of space, we could call something like “Rimwards.”

[–] [email protected] 5 points 2 days ago* (last edited 2 days ago) (1 children)

Additionally:

Normal and antinormal - perpendicular to prograde and retrograde.

Source: well over 2000 hours in KSP

[–] [email protected] 1 points 2 days ago

Correct. Orthogonal to both the prograde/retrograde and the radial/anti-radial axis.

AFAIK, "normal" follows the right-hand rule. If you point your straight index finger prograde, and your thumb points radially, your middle finger, bent perpendicular to the other two, is "normal".

[–] [email protected] 6 points 2 days ago (1 children)

What are you trying to explain to people exactly? If you're just trying how centrifugal gravity works, keep it simple stupid. It's just a great big rotor ride.