ABX <abx### [at] abxartpl> wrote in
news:bf938v0ve50rka8b3sovjbtbdmjhl7qike@4ax.com: 

> On 26 Mar 2003 07:40:08 -0500, Tor Olav Kristensen
> <tor_olav_kCURLYAhotmail.com> wrote:
>> Of course I had to try ABX' suggestion to make one's
>> own XYZ to UV mapping functions:
> 
> I have used that idea in my 'random' isosurface maze:
> http://news.povray.org/search/advanced/?s=maze&g=povray.binaries.images

I did not realise that back then. Hmmm... Maybe I could
use this in some of my own isosurfaces.


>> And after having played around for a while with that
>> technique, I thought that maybe one could define a
>> pigment that shows the uv-coordinates "projected"
>> onto the surface of the shape one are working with.
> 
> Interesting, you mean red is u, green is v and blue is nothing ?

Yes.


>> Any suggestions or comments ?
> 
> Since it is mesh, isn't that already posible with 'traditional'
> uv_mapping ? 

It _is_ traditional UV-mapping. Maybe I was a little
unclear about that: No user defined functions are used
to build or map the pigment. It is POV-ray itselt that
does the mapping. My macro just builds the pigment.

(The ParametricMesh() macro defines, as usual, the UV
coordinates for each mesh triangle vertice.)


Tor Olav

Post a reply to this message