POV-Ray : Newsgroups : povray.binaries.images : Neon Tubes (Anyone can tell me how to make them emit light) : Re: Neon Tubes (Anyone can tell me how to make them emit light) Server Time
18 May 2024 15:53:25 EDT (-0400)
  Re: Neon Tubes (Anyone can tell me how to make them emit light)  
From: Mike Raiford
Date: 8 Sep 2005 10:11:06
Message: <4320467a@news.povray.org>
Mike Raiford wrote:
> NumbC wrote:
> 
>> Anyone got a solution for good realistic neon lights? I am currently 
>> trying
> 
> 
> I'm with everyone else:
> 
> radiosity+emitting media.
> 
> It seems your neons are torroidial, so use a torus function, something 
> like:
> 
> #declare neon_light =
> torus
> {
>     2, 0.1
> 
>         pigment { color rgbt 1 }
>         finish { ambient 4.0 diffuse 0 reflection 0.5}
>             hollow
>         interior
>         {
>             media { emission rgb <1, 0.01, 0.001> *15
> 
>                 density
>                 {
>                    function { f_torus(x,y,z,2,0.05)}
>                 }
>             }
>         }
> 
> }
> 
> The radiosity block I used:
> 
>     radiosity
>     {
>        pretrace_start 0.08
>        pretrace_end 0.01
>        low_error_factor .8
>        count 100
>        nearest_count 20
>        recursion_limit 4
>        error_bound 1
>        brightness 1
>        media on
>     }
> 
> I'll attached a file of what this will look like. Please excuse me if 
> the object looks similar. I liked it and wanted to make it look the same
> (but makes a darn good demo-scene) :)
> 
> Adjust the colors in any way you wish. I chose a more typical red for 
> the neon.
> 


-- 
~Mike

Things! Billions of them!


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