JRG wrote:
> Simple scene to test some metallic textures.

Nice pic. What metals are the spheres supposed to present? The "iron"
ones (white) look very real. The yellow ones (gold? brass?) do not look
very good. They look more like a plastic metallic spheres hung on x-mas
tree than real metal. I encountered similar problems when I tried to
create realistic antique gold texture based on your magnificent
iridescent metal but failed miserably. I think at the basic problem with
your spheres is that they are too polished and reflective; real gold
tends to not reflect a much, but instead it has highlights that have
this far been resisted all my attemps to model them with POV-Ray.
Combining strong highlites with a little different colour than the
diffuse color of the metal and possibly using blurred reflection is my
best guess right now.

In fact I almost came to conclusion that it's impossible to model
real-looking gold with POV-Ray, but you guys have repeatedly proved my
asumptations of this kind false, so I expect you to do it this time too.

One problem with gold is that it is not possible to have a real life
look at any golden item, that would have big smooth surfaces. I have to
rely on few very small gold items I own and to pictures. And almost all
the pictures are taken in studio environments, with no possibility to
know about lighting, surroundings etc. I have also noticed, that ancient
gold items semm to look more greenish, at least on hightlights, than
modern gold items - is this due to differences in alloy, environment of
the items in photographs or something completely else is something I
have not been able to find out this far.

The copper spheres (reddish brown) in your pic can't be judged, because
none of them are clearly visible.

-- 
          /"\                           |    iki.
          \ /     ASCII Ribbon Campaign |    fi/
           X      Against HTML Mail     |    zds
          / \

Post a reply to this message