I have found that it is indeed the fog that messes up the media object.
Is this a bug in POV-Ray? and/or is there some workaround to this? I
hope this can be fixed.

-Josh


Josh Franklin wrote:
> 
> Ok, here's another question I have for you all...I have a cylinder that
> houses a media object that looks like fire. The fire looks great, but
> there is a dark clearish object where the cylinder is. here is most the
> code for the scene...
> 
> #include "colors.inc"
> 
> camera {
>         location < 0.0, 1.4, -1.0 >
>         look_at < 0.0, 1.35, 0.0 >
> }
> 
> //i've tried setting media_interaction off, but that does nothing
> light_source { < 100.0, 100.0, -100.0 > color rgb 0.8 }
> 
> //just to make it visible
> background { color rgb <0.6, 0.2, 0.4 > }
> 
> //could the fog be interfering?
> fog {
>         fog_type 2 distance 80 color rgbf < 0.6, 0.4, 0.6, 0.4 >
>         turbulence 0.6 turb_depth 10
>         omega .75 lambda 2.5 octaves 3
>         fog_offset 0.8 fog_alt 1.3
>   }
> 
> plane {
>         y, 0.0
>         texture {
>                 pigment { color rgb < 0.04, 0.8, 0.1 > }
>                 normal { bumps 0.3 scale < 1.2, 0.6, 1.4 > }
>         }
> }
> 
> //This is the evil cylinder
> cylinder {
>         <0, 0.01, 0 >, < 0, 2, 0 >, 1
>         pigment { color rgbf 1 }
>         interior {
>                 media {
>                 emission 1.5
>                         intervals 20
>                         samples 1, 10
>                         confidence 0.9999
>                         variance 1/1000
>                         density {
>                            cylindrical
>                         poly_wave pi
>                         turbulence 1.1
>                         color_map {
>                                   [0.0 color rgbt < 0, 0, 0, -1 > ]
>                                   [0.3 color rgbf <1, .45, 0, -.9 >]
>                                   [0.8 color rgbf <1, 1, 0, .8 >]
>                                   [1.0 color rgbt < 0, 0, 0, -1 > ]
>                         }
>                         scale < 1.4, .8, .8 >
>                         rotate 90*z rotate 85*y
>                 }
>                 }
>         }
>         translate 5*z
>         hollow
> }

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