I've just tried and compared the image_map
approach to the approach I used. You're
idea about passing the pigment through the
image_map function moves the load off of
the tracing process onto the parsing process.
So, depending if I want quick renders or
quick parsing, I set up a switch so that one might
choose freely where the timing should rise.. :-)

I'm wondering though, if there'd be a method
to output that image_map function on the fly,
that'd be neat!

-- 
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights
Email: Tim### [at] gmxde

> Hm.. I don't understand what you're after.
> What I'm doing now is take several pigments
> and average them for the blurring effect. I then
> wrap this into a function and apply my own
> color_map. So I'm passing it through the function
> like you suggested. Or am I misunderstanding
> something?
> Do note that I do need transparency based on
> the brightness, so I'm not sure what you're after.
> Are you suggesting I should use image_map function
> to create an internal image-map, then pass that to
> a function again, for me to apply the transparency?
>
> -- 
> Tim Nikias v2.0
> Homepage: http://www.digitaltwilight.de/no_lights
> Email: Tim### [at] gmxde
>
>
> > > Did it with pigment-patterns alone, but had to
> > > go through a function once to apply my own
> > > color-map for transparencies. Thanks for
> > > the suggestion anyways!
> >
> > The point of using a function image would be for rendering
> > speed...evaluating the function/average pigment can get quite slow, you
> > can do it once at parse time and get a faster render. If you're just
> > rendering the image on a plane to just do a post-process filter, this
> > probably won't help.
> >
> > -- 
> > Christopher James Huff <cja### [at] earthlinknet>
> > http://home.earthlink.net/~cjameshuff/
> > POV-Ray TAG: chr### [at] tagpovrayorg
> > http://tag.povray.org/
>
>

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