Simen Kvaal <sim### [at] studentmatnatuiono> wrote in message
news:383cf8f8@news.povray.org...
> One way to avoid slow-rendering media is to use several semi-transparent
> cones inside each other, 5 or 6 would do. They all should have the same
> pigment, i suggest bozo with a [clear -> semi transparent gray] color_map.
> Since they will be placed on different coordinates, the texture will look
> like it is in fact a media. I haven't tried it, though.

I can confirm this works fine - i have used this technoque for rocket engine
exaust - however to do it properly its not much quicker than using real
media

Rick

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