> Also, why are you using emitting media rather than scattering?


Makes more sense to me to use emitting in this particular case. If he were
using scattering, then he shouldn't confine the media to the cone shape. It
may make sense to add fog to the scene to simulate the absorption part of
the media.

- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]

"Trevor Quayle" <Tin### [at] hotmailcom> wrote in message
news:3bdc1fec@news.povray.org...
> try adding
> fade_power 2 to the light source as well, this will really increase the
> falloff rate
> change Clear to rgbt 1  (Clear = rgbf 1 which comes out different fo some
> reason)
> Also, why are you using emitting media rather than scattering?
>
> -tgq
>
>
> "25ct" <25c### [at] lineonenet> wrote in message
news:3bdc1cd8@news.povray.org...
> > Hi,
> >
> >      Using Steve's and others suggestion of a clear cone and media, I'm
> > somewhat closer to what I want to achieve, but if you look at the image
> > where the light crosses the illuminated window, you can see clearly a
kind
> > of dark/black hue or line. It doesn't show so much in the darker areas,
so
> > how do I remove it?  Also, I'm getting it wrong where it's supposed to
> start
> > fading, can anyone help me with this? I've tried fade_distance in the
> light
> > source but can't see any difference between a low setting and a high
> > setting, ie, I've tried .8 and 3.8.
> >
> >      Thanks for any help.
> >
> >       ~Steve~
> >
> >      Here's the code...
> >
> >    light_source { <-10.125, 5.83, 13> colour Yellow * 1.5
> >
> >   area_light <4, 0, 0>, <0, 0, 4>, 4, 4
> >   adaptive 1.5
> >   jitter
> >
> >    fade_distance 3.8
> >
> >     }
> >
> >
> > #declare Media =
> > media {
> >
> > emission .028
> >       intervals 5
> >       samples 1, 10
> >       confidence .9999
> >             variance 1/1000
> >       density{
> >               gradient y
> >               ramp_wave
> >               turbulence 18 //0.3
> >
> >               colour_map{
> >                         [0.0 colour <.6, .6, 0.3>]
> >
> >                        }
> >               scale <1,1,1>
> >               translate <-10.6, 5.2, 14>
> >              }
> >       }
> >
> >
> > cone{<0,-7.5,0>20,
> >      <0,1.3,0>.05
> >
> >      pigment{rgb Clear}
> >      interior{media{Media}}
> >
> >      hollow
> >
> >      translate <-10.6, 5.2, 14>
> >     }
> >
> >
> >
> >
>
>

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