Path: chuka.playstation.co.uk!news
From: jmhannan@cix.co.uk (Jeff Hannan)
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Problem with positioning
Date: 13 May 1998 17:32:59 GMT
Organization: PlayStation Net Yaroze (SCEE)
Lines: 22
Message-ID: <memo.19980513182550.44659B@jmhannan.compulink.co.uk>
Reply-To: jmhannan@cix.co.uk
NNTP-Posting-Host: dyna25-05.compulink.co.uk


Has anyone had a problem with positioning things
in 3D space?
I am trying to place some objects in the world,
but they come out incorrectly.
For example, I'm trying to place a single polygon
defined as 0,0,0; 0,0,-2000; 2000,0,-2000; 2000,0,0
This seems fine even when I do rsdlink -info on the
tmd file, though the vertices aren't listed in the
same order.
The object is displayed at 0,0,0; 0,0,2000; -2000,0,2000;
-2000,0,0 - seems to have x and z values negated.
If I add an offset to this object, it is added correctly,
i.e. not negated.
Other objects only seem to have x parts negated or only
z parts.
I have set the super to WORLD.
Is this an obvious problem, or is it more likely I have
some corruption occuring in my program?

Jeff Hannan