Date: Sun, 22 Nov 1998 15:16:02 GMT
From: Junior System Administrator <pete AT restall DOT net>
Message-Id: <199811221516.PAA03824@basil.restall.net>
To: djgpp AT delorie DOT com
Subject: OFF-TOPPIC: Trig tables
Reply-To: djgpp AT delorie DOT com


Hi, please forgive me but...I couldn't find this info anywhere.  I know it's
not a DJGPP-specific question, but please see if you can help.

I'm taking my first steps to creating a ray-caster (using DJGPP, of course :)
and I'm stuck with trig lookup tables.  See, DOOM/Wolf3D use these things
called 'finesine' and 'finetangent' so that the lookup tables don't need to
be re-calculated everytime the screen is resized, and I would _really_ like
to know how they work.  Re-calculating the tables takes a little time, so
there's got to be a better way to do it, and I can't find one !  Can anyone
help me please ???  Thanks in advance, and sorry once again for posting this
here,

	Pete =:-)

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