Comments on: The Limits of Scenery Precision

By: Jonathan

Jonathan — Thu, 02 Jun 2011 22:09:00 +0000

Ah. Well, I’ve had some fun with projections myself. My own code naturally used great circles, but the map naturally used loxodromes (straight lines on a Mercator projection); and I didn’t bother to work around that. Fortunately the lines it was meant to deal with are very small, but if you do enter points that are artificially far apart, the discrepancy looks truly bizarre.

Re: shadows: I noticed there was no self-shadowing. Maybe this is just what happens naturally when you flatten a shadow volume? The high shadow concentration would give it its dark color? On the ‘bright’ side, such darkness may improve your sleep. 🙂

By: Ben Supnik

Ben Supnik — Thu, 02 Jun 2011 21:19:37 +0000

In reply to Jonathan.

precision loss: any number of things, including but not limited to…
– Precision limits inherent to DSF.
– Precision limits due to the decision on point pooling in the DSF.
– Decision limits due to the internal representations in memory in the sim.
– Precision limits and precision loss during transform in the sim.
– Gnomes inside the code.
Re: shadows: that’s the “fake” decal shadow that you get if you turn real shadows off. I have no idea why it’s so dark..I may lose sleep over this.

By: Jonathan

Jonathan — Thu, 02 Jun 2011 21:13:48 +0000

Hmmm. What is actually happening that causes this misalignment? Something to do with the map projection?

P.S. In case you miss the beatings you get for showing in-development stuff, shadows aren’t that dark in real life. 😛