Re: [Flightgear-devel] Grand Canyon Demo

[Alex P. <ale...@ie...>]

> > That demonstrates the point I made about texturing for rock types;
> > You can do a good guess of the GC texturing by ...
> > (1) Anything within 30 degrees of the horizontal is covered with forest
> > (2) Anything between 30 degrees and 60 degress is a grey scree color
> > (3) Anything else is textured according to altitude MSL with a 1D texture
> 
> This sounds like a good idea. I am not an expert in this, but would
> something like that take a lot of cpu time, i.e. slope-determinant
> texturing? POV-Ray does something similar to that when placing a texture on
> a mountain or whatever. The effect is very good.

I was thinking more of doing it at scenery compilation time; i.e. taking
the existing tile of scenery, keeping the triangles and repainting them
according to the above rules to see what it looks like.

If it helps a lot, it would be worth putting a hook into TerraGear so
that it can implement the same ploy to other canyonlands areas worldwide
simply by providing the two magic angles and the rock layering texture.