POV-Ray: Newsgroups: povray.advanced-users: material that is non lit on direct hit, but after reflect/refract: material that is non lit on direct hit, but after reflect/refract

POV-Ray : Newsgroups : povray.advanced-users : material that is non lit on direct hit, but after reflect/refract : material that is non lit on direct hit, but after reflect/refract		Server Time 8 Jun 2024 00:24:45 EDT (-0400)

From: Daniel Sirleto
Date: 14 Mar 2014 05:45:00
Message: <web.5322cefdf42c1a55be9a59a30@news.povray.org>

Hello World ;)

i am trying to create a material that does NOT become bright on direct hit by
light source (but keeps its base color, e.g. 0.5,0.5,0.5). but it shall increase
its brightness when hit by light that has been reflected/refracted.

what i want is to render glass-like objects ontop of a light gray surface. but i
need the surface to keep its color and not show a pointlights phong-like
whiteish arua, instead it shall stay gray everywhere. (i guess the easiest way
is to set an ambient value and disable lighting for that material). but i still
want caustics or other refraction effects that cause (colored) light coming
through the glass objects to colorize this otherwise gray surface.

any ideas?

thanks for your help,
  daniel / sirleto

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