From: "Steve Patton" <leaphe AT pemail DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro : 3D Problems
Date: Sat, 25 Apr 1998 18:24:01 -0600
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References: <6hmd3q$m67 AT bgtnsc02 DOT worldnet DOT att DOT net> <zVZbPCAQz4P1Ewzl AT talula DOT demon DOT co DOT uk>
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Ok, I see.  I didn't see the vector part, I was thinking more of the lines
as position coordinates, and front coordinates, ok, makes much more sense
now, thanks.

--
-Steve
Personal : http://home.att.net/~pattonl
Shawn Hargreaves wrote in message ...
>Steve Patton writes:
>>get_camera_matrix_f( &matrix, 0, 0, -10, 0, 0, 0,
>>                                 0, 1, 0, 32, 1);
>
>You are passing a zero front vector for your camera. Allegro doesn't
>usually care what length this vector is, so there is no need to
>normalise it, but zero is obviously a bad thing because it makes it
>impossible to tell which direction the camera should be facing...
>
>
>--
>Shawn Hargreaves - shawn AT talula DOT demon DOT co DOT uk -
http://www.talula.demon.co.uk/
>"Pigs use it for a tambourine" - Frank Zappa