POV-Ray : Newsgroups : povray.general : No pointlight atmospheric media interaction? : Re: No pointlight atmospheric media interaction? Server Time
10 Aug 2024 23:27:09 EDT (-0400)
  Re: No pointlight atmospheric media interaction?  
From: Ken
Date: 7 Oct 1999 09:36:21
Message: <37FCA1C6.54C9971C@pacbell.net>
"Greg M. Johnson" wrote:
> 
> I cannot get a pointlight to interact with atmospheric media. What's up?
> 
> When I put a spotlight here, it looks cool.  The pointlight, however,
> doesn't do a thing....
> 
> light_source{<0.005,0.00081,0.00081>  color White*14
> media_interaction on}
>   /*
>   light_source {  <0,0,0>
>     color White*14
>     spotlight
>     radius 90
>     falloff 89//28
>     tightness 1
>     point_at x
> 
>   }
>     */
> media {                         //media scattering
>   intervals 10
>   scattering { 2, red 0.05 blue 0.001 green 0.02}
>   samples 1, 10
>   confidence 0.9999
>   variance 1/1000
>   ratio 0.9
> }


This works for me using your media and my camera. Turn the media_interaction
off and the media dissappears. Turn the media_interaction on and the media
appears. I don't know what your problem is but it's not Pov's fault.

#include "colors.inc"

  camera {
    location <0, 0, -1>
    look_at <0, 0, 0>
    angle 75
    }
    

 light_source{<0.005,0.00081,0.00081>  color White*14
 media_interaction on}

 media {                         //media scattering
   intervals 10
   scattering { 2, red 0.05 blue 0.001 green 0.02}
   samples 1, 10
   confidence 0.9999
   variance 1/1000
   ratio 0.9
 }


-- 
Ken Tyler
1100+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html


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