How about adding a 5th color channel: glow.
Every pixel that has a glow-value of 1 will glow with a pixel-radius
given in the global_settings. 0.5 will glow with half the intensity.
I hope you understand what I mean...?
ZK
http://www.povplace.be.tf
(You'll get an error-message if you follow that link. Don't worry,
it's not important, it's just a JAVA-error...)
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