POV-Ray : Newsgroups : povray.general : Cone of light : Re: Cone of light Server Time
6 Aug 2024 21:38:58 EDT (-0400)
  Re: Cone of light  
From: Mitchell Waite
Date: 13 Jan 2002 23:24:55
Message: <3c425d97$1@news.povray.org>
I am trying to use the KISS method, how about this as a texture on a cone
with a spot aligned inside it?

#declare Cone_Light =
   material  // Cone Light
   {
      texture
      {
         pigment
         {
            color rgbt <0.501961, 1.0, 1.0, 0.968733>
         }
         finish
         {
            ambient 1.0
            diffuse 1.0
            specular 0.007167
            roughness 0.654133
         }
      }
   }



"Christopher James Huff" <chr### [at] maccom> wrote in message
news:chr### [at] netplexaussieorg...
> In article <3c4234ef@news.povray.org>,
>  "Mitchell Waite" <mit### [at] dnaicom> wrote:
>
> > Can anyone point me to an example that shows how to make my spotlight
appear
> > to have a cone of light seem to emanate and also glows without haven't
to
> > use atmosphere (which seems to slow my rendering way down and adds too
much
> > stuff outside my light area)?
>
> Well, first, "atmosphere" is an obsolete feature, it has been replaced
> by "media" in POV 3.1. POV 3.5 is currently in beta, you really should
> upgrade to at least POV 3.1.
> Anyway, the reason it is slow is the extra calculations for doing the
> light scattering...you pretty much have to choose between fast rendering
> and no light beams or slow rendering with visible beams. However, the
> MegaPOV unofficial patch and the POV-Ray 3.5 beta have additional
> sampling methods that can let you get away with much faster settings, so
> you may want to check them out.
>
> Or you might be able to fake it using a semitransparent cone or a
> transparent cone filled with emitting media (which will render faster
> than scattering media).
>
> --
>  --
> Christopher James Huff <chr### [at] maccom>


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