Inverted Slope Limits

Started by WAS, February 15, 2021, 04:37:23 PM

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WAS

Can someone, for my sanities sake explain/demonstrate how one would target a specific slope restriction when you're working with inverted terrain/planet? I can't get the same look as I do on a normal planet and I think I'm just not mathing in my head right. Hopefully it's not just a limitation in TG

Dune

By inverted terrain you mean something like the ceiling of a cave?

WAS

Basically, or a inverted sphere (Negative radius).

Wanted to export planet maps that more represent the non inverted look

Dune

So you render spherically from the 0/0/0, I see. I would say, theoretically, that slopes are the same whether inverted or not. So you found a difference?

Dune

Mmmm. Mask is going upside down, and rotating the sphere obviously doesn't help. I don't see a way out, unless you rotate the texture 180ยบ afterwards, or flip it vertically. And when I set scale Y=-1 TG crashed.

Tangled-Universe

With an inverted sphere you are basically consistently trying to sample the surface laterally, similar to how difficult it can be to populate laterally displaced surfaces, and TG has difficulties with that by design.
I'll think about it...