From: "DeHackEd" <notgiven AT out DOT com>
Newsgroups: comp.os.msdos.djgpp
References: <73hodr$pa2$1 AT clam DOT niwa DOT cri DOT nz>
Subject: Re: Help! rotation in Allegro.
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Message-ID: <iMH72.2068$Z72.488458@tundra.ops.attcanada.net>
Date: Sat, 28 Nov 1998 00:49:18 GMT
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NNTP-Posting-Date: Sat, 28 Nov 1998 00:49:18 GMT
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Ex22.c is a 3d example, and those are coordinate codes, each line containing an
X, Y, and Z coordinate for the 8 corners needed to make a cube.

A better example would be ex21 near the end. Just make your way around the
comments and indentation.

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"DeHackEd"

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Richard Pett wrote in message <73hodr$pa2$1 AT clam DOT niwa DOT cri DOT nz>...
>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!
>
>
>