From: "Richard Pett" <rpett AT sparky DOT niwa DOT cri DOT nz>
Newsgroups: comp.os.msdos.djgpp
Subject: Help! rotation in Allegro.
Date: Thu, 26 Nov 1998 09:10:42 +1300
Organization: National Insitute of Water and Atmosphere (http://www.niwa.cri.nz)
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

I need help.  Can someone please explain to me the 256 degrees rotation
system used in Allegro, and how to use it.  small example would be nice :-)

Also, I was looking through the example programs that came with Allegro, and
one of the examples, I think it was ex22.c (the bouncing cubes one anyway)
had a line in it that went something along the lines of...

...= { 16 << -32, 16 << 32, 16 << -32,
          etc....

I don't know if I quoted the exact code very well (sorry brought the wrong
file to work with me - so I'm guessing).  I am unsure about what this does,
I'm assuming that it's a bitwise operation of some sort but I'm not really
sure.  sigh!