From: Bernd Kreimeier <Bernd.Kreimeier@NeRo.Uni-Bonn.DE>
Date: Mon, 18 Mar 1996 14:35:18 +0100 (MET)
Message-Id: <199603181335.OAA07387@colossus.nero.uni-bonn.de>
To: quake-editing@nvg.unit.no
Subject: Re: WAD Conversion sketch
>From: Uffe Friis Lichtenberg <uffefl@diku.dk>
>additional info need, namely convex hulls
Has anybody verified that a Slab BSP tree is needed, or might
it be easily omitted with a zero length entry? If there is
only one Slab, does it have to be a convex hull, or is a
bounding box sufficient?
>we do need a 3D BSP tree
If I am not mistaken, you could simply copy the 2D BSP into
a matching 3D BSP, and convert the information from the old
NODES and SSECTORS. Think about it.
>the floors and ceilings are planes and have to be partitioned
You are perfectly right. In fact, this might be the most
difficult task to solve. It breaks down to creating closed
polygons from SECTORS and LINEDEFS for each floor (ceilings
will have the same partitions), and using the 2D BSP NODES
info (namely the partition lines) to split the SECTORS'
polygon into the Leaf2D surfaces. I already added this
to the proposal.
>misc. remarks on conversion, DXF, intermediate file formats
All very true. However, I am skeptical that any file format
not done by id will ever be agreed upon. Anybody remember the
porposal by Tom Neff (WAD Interchange Format)?
>>The WAD will have to have only one floor/ceiling per xy plane,
>>i.e. the DOOM world geometry restrictions
>But where do you find wads that fulfil this requirement?
Hmmm? Any WAD that can be used with DOOM does :-).
b.