WebFX: About Fire
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About Fire: Each pixel in the image is turned into an average of the
three pixels on the line directly below it, and a fourth pixel two lines
below it. The fourth pixel is also darkened. (This creates separate 'licks'
of flame). Random bright pixels are placed throughout the image and many
are placed on the bottom lines of the image (to 'feed' the flames.)
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Tips: This looks best with images that aren't too tall.
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Inspiration: Fire effects seen on Atari 8-bit demos. (Thanks to
Tamas Bene of HARD Software of Hungary for the algorithm!)
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Levels: None
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