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Phil,
I have 3 media tutorials in the PRSG that may help you. Look in POV Advanced
under the tutorials section.
www.croswinds.net/~povstudy
Hope it helps,
C.J. - POV User
"philhall" <phi### [at] io com> wrote in message
news:3A41116E.42279D13@io.com...
> Chris Huff wrote:
> > media {
> > emission color White
> > samples 100, 100
> > //you will probably want to change the samples setting to
> > //something more like: samples 75, 125
> > //of course, the numbers depend on your scene...if you use
> > //MegaPOV and method 2 or 3, you can get away with much smaller
> > //numbers.
> > density {spherical turbulence 1.5
> > //use the "spherical" pattern to control the density
> > color_map {
> > //I don't know what you meant with the "t" channel,
> > //you will need to adjust the brightness of these colors
> > //to get the right results.
> > [0.0 color rgb < 1, 0, 0>]
> > [0.6 color rgb < 1, 1, 0>]
> > [1.0 color rgb < 1, 1, 0>]
> > }
> > }
> > rotate < 0, 90, 0>
> > scale < 0.6, 0.5, 0.6>
> > }
> >
> > You can generally ignore ratio, variance, and confidence, the defaults
> > are usually sufficient. Don't bother messing with transmit or filter,
> > the brightness of the color defines the density, black is completely
> > transparent. Try experimenting with emission media at first, it is the
> > fastest rendering.
>
> Thanks for your help. I'm getting slightly better results with your
> advice but it still looks like a big splotch of color. I'm basically
> trying to make a nebula type effect inside of a glass sphere. If density
> is controlled by the brightness of the color, how can I get a nebulous
> effect with vivid colors? Also, I don't seem to be able to get any
> turbulence. Its more sort of rings of color that fade into each other.
> Do you have any more advice or could you point me to some place that has
> good examples and descriptions of getting this media thing to look good?
>
> -Phil
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