POV-Ray : Newsgroups : moray.win : Getting light to reflect : Re: Getting light to reflect Server Time
25 Jan 2022 03:22:57 EST (-0500)
  Re: Getting light to reflect  
From: Tim Cook
Date: 27 Feb 2011 03:06:23
Message: <4d6a05ff$1@news.povray.org>
On 2011-02-26 12:18, Warp wrote:
>    Radiosity only does diffuse reflection, not specular (ie. mirror)
> reflection, which is what photon mapping does. I got the impression
> that the original poster wanted the light to reflect from a reflective
> (mirror-like) object.

I find myself confused as to the exact distinction between diffuse and 
specular reflectivity.   All objects are mirror-like and specular; 
diffuse materials are just this reflection spread out according to the 
unevenness of the surface texture.  If you tune radiosity settings to a 
count of one and a very low error bound you can see that this is what 
radiosity is doing.   The bright-spot shine of a specular highlight is 
simply the result of a light source being so much brighter than 
everything it's illuminating.  Yes?

-- 
Tim Cook


Post a reply to this message

Copyright 2003-2021 Persistence of Vision Raytracer Pty. Ltd.