i had to set the light source to be a really high rgb value.  for some
reason i had to also put a plane behind the stain glass or it just came out
looking dull.  heres a 'makeshift' bit of code.

john

////////

global_settings {
    ambient_light rgb 0.0
    max_trace_level 10

    radiosity {
      pretrace_start 0.08
      pretrace_end   0.02
      count 100
      nearest_count 8
      error_bound 1.15
      recursion_limit 6
      low_error_factor 0.6
      adc_bailout 1/255
      gray_threshold 0.05
      minimum_reuse 0.015
      brightness 0.125
      max_sample -1
      normal on
     }
    }

media {
    intervals 50
    scattering { 2, rgb 0.005 }
    samples 1, 5
    confidence 0.95
    variance 1/128
    ratio 0.9
    }

#declare Dull = finish { ambient 0.05 diffuse 0.3 reflection 0.0 specular 1
roughness 0.001 }

#declare Cutty =
union {
 box {<-15,-40,-2>,<15,0,2>}
 intersection {
  cylinder {<-10,0,-2>,<-10,0,2>,25}
  cylinder {<10,0,-2.1>,<10,0,2.1>,25}
  }
 }

difference {
 box {<-210,-110,31>,<210,130,-340>}
 box {<-200,-50,29>,<200,125,-330>}
 object { Cutty translate <0,40,30> }
 pigment { rgb 1 }
 finish {
  ambient 0.1
  diffuse 0.8
  reflection  { 0 }
  specular 0.1
  roughness 0.005
   }
 normal { granite 0.2 scale 1 }
  }

 box {<-16,-1,30.5>,<16,70,30.6>
 pigment {
  image_map { gif "bruce4.gif" interpolate 2 filter all 0.6}
  translate <-0.5,0,0>
  scale <32,75,1>*0.8
  }
 finish { Dull }
 }

camera {
    perspective
    location <85,-30,-190>
    direction <0,0,1.5>
    look_at <-55,0,30>
  }

 light_source { <0,60,-260> rgb <1,0.5,0.2>*0.4 media_interaction off  }

 light_source { <0,1200,2000> rgb 25 }

 background { rgb 1 }

 plane {<0,0,1>,2100 hollow pigment { rgb 0.05 } finish { Dull }}



/////////////////// the end

"Alastair Murray" <ala### [at] hotmailcom> wrote in message
news:3c9cab9b$1@news.povray.org...
> How did you get the light to shine through the dust like that?
>
> Sources would be incredibly useful.
>
>
> "John & Amy Robinson" <jro### [at] columbusrrcom> wrote in message
> news:3c9ca1c3$1@news.povray.org...
> >
> > "Patrick Dugan" <pat### [at] netinsnet> wrote in message
> > news:3c9c9e4e@news.povray.org...
> > > How do/can you make a isosurface box that has a "rough" surface?
> > > I have a (poor) image I made by hand of a "turbulent" box shape.
> > Basically
> > > I am trying to
> > > make boxes that look like randomly made rectangular stones that have
> been
> > > placed within
> > > a stone wall (like a fireplace) but have been chipped to be somewhat
> > > rectangular so they
> > > can be placed somewhat close together.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > i used the f_rounded_box function for the walls in this image
> > http://www.fishinglog.com/Art/bigThe%20Keep.html
> >
> >
> >
> >
>
>

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