From: "Ike" <drone AT ismi DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Another 3D question.
Date: Sat, 1 May 1999 13:04:07 -0700
Lines: 11
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.00.2314.1300
X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300
NNTP-Posting-Host: tc2-16.ismi.net
Message-ID: <372b346c@news.ismi.net>
X-Trace: 1 May 1999 13:05:48 -0400, tc2-16.ismi.net
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

    I've recently started testing out some of the cool 3D functions in the
Allegro library, and this is my first time doing anything constructive in
3D.  Well using the matrix routines and V3D_f structure I can get a
four-faced pyrmid to roate around the Z-axis, but Im having some trouble.
The faces on the back of the triangle show through the faces on the front
becase they are drawn first and I can't figure out how to Zsort them so the
ones on top get blitted first.
    Is there a function in the Allegro libarary that will do this for me?
How exactly is it done?  Any help would be greatly appreciated.  Thanks!