In article <3f35342b@news.povray.org>, "JK" <bil### [at] mbnetfi> wrote:

> On the matter of slopes again, its also not possible to translate or 
> rotate the slope pattern or to use it as a function, I guess.

Correct. It requires information about a surface normal, instead of just 
position as with most other patterns.


> I'm just going through the POV-Ray docs trying to learn as much as possible.
> Right now the idea of using functions as patterns and the whole idea of 3D
> solid texturing seems the most confusing to me.

Well, consider a real-world sphere being carved from a block of wood. 
The grain and ring structure exist through the entire block of wood, as 
you carve out the sphere you only this structure at the surface. In POV, 
this structure is usually defined with a 3D function. The gradient 
pattern is an infinite stack of gradients, the wood pattern is similar, 
but based on nested infinite cylinders instead. You describe the 
materials objects are made of, instead of stretching images over their 
surfaces.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

Post a reply to this message