In article <web.3dcadd16195c50e490f0db7e0@news.povray.org>,
 "normdoering" <nor### [at] yahoocom> wrote:

> They do from a user's perspective. Both of them take images, jpegs, gifs,
> etc. and derive a z coordinate from the "brightness" of a pixel point.
> That's the essence of a mesh.

That's the essence of a height field. Meshes and isosurfaces are both 
much more flexible. What you are asking to do makes it no longer a 
height field, but a mesh would easily do it.


> The picture gives you pixels in an orderly x,y or u,v set of 
> coordinates and the grayscale values give you a z. Now if you could 
> turn specially drawn pictures into mesh structures and manipulate 
> them like you can manipulate an isosurface you'd have a way of making 
> intricate, but very large, wireframe/mesh models.

What do you mean by manipulating a mesh "like you can manipulate an 
isosurface"?
Anyway, it has already been explained that you can generate the needed 
mesh with the scene description language, if you have a more specific 
question about doing this, ask it. And just drop the word "wireframe" 
from your vocabulary until you learn how to use it correctly, please...

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

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