POV-Ray : Newsgroups : povray.advanced-users : 3dstudiomax -> povray : Re: 3dstudiomax -> povray Server Time
30 Jul 2024 16:14:50 EDT (-0400)
  Re: 3dstudiomax -> povray  
From: Ron Parker
Date: 29 Sep 1999 11:17:05
Message: <37f22d71@news.povray.org>
On Thu, 30 Sep 1999 01:05:25 +1000, Lance Birch wrote:
>WUNDERBAR!!!  8)
>
>Does it do diffuse/specular selection yet???

No.  It's only good for specifying which objects interact with which 
light sources.  If you would, could you go into some detail as to 
how the interface for MAX's feature works?  Do you have some sort of
patch bay where you say "this light illuminates this object fully,
this light illuminates this object only specularly" etcetera, or is
it more like "This light illuminates only diffusely, and it illuminates
these objects."

It would be relatively easy, I should think, to make a light illuminate
only diffusely or only specularly (with a patch to POV, of course, not
with any current version of POV.)  Given that, one could easily put 
a diffuse-only light and a specular-only light at the same location and 
use light groups to specify which objects each illuminates.

By the way, you could probably also use the superpatch to write a macro 
that - given the camera parameters, image size, pixel position, and object
identifier for a specular highlight - could compute a light source that 
would create that highlight.


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