HDTenEightyP/NetNews huggingface dataset:
From: ct54143@uxa.cso.uiuc.edu (Chris Trimble)
Subject: Re: SIGGRAPH member benefits
Organization: University of Illinois at Urbana
Date: Thu, 27 Aug 1992 23:18:20 GMT

spl@szechuan.uucp (Steve Lamont) writes:
>I'm all for splitting SIGGRAPH off from ACM -- that way ACM could form
>a new organization that would concentrate on the academic and research
>aspects of computer graphics, as opposed to the show biz.  

 IMHO, SIGGRAPH is for all computer graphics enthusiasts, not just one 
particular subset. It should also remain as such because it gives everyone
a chance to interact with and learn from people who do things with graphics
that are completely different with their own projects.


-- 
 Chris Trimble 	    | I bought you drinks ; I brought you flowers ; I read you
 SGI - NeXT - Mac   | books and talked for hours. And every day so many drinks
 Univ. Of Illinois  | such pretty flowers. So tell me : what've I - what've I -
 chris1@uiuc.edu    | what've I done to deserve this? 	  - Pet Shop Boys
Newsgroups: comp.graphics
From: reddy@spso.gsfc.nasa.gov (Jagan Reddy)
Subject: gnuplot. Problem plotting data.. Help appreciated.
Summary: gnuplot is treating values too low and not plotting.
Keywords: gnuplot too low values
Organization: Goddard Space Flight Center
Date: Mon, 31 Aug 1992 22:30:56 GMT

Hi,

	When I am trying to plot my data which looks like

   3.041000  3.720E-27
   3.261900  1.240E-26
   3.688000  1.720E-26
   4.211400  1.520E-27
   5.007400  1.430E-26
   5.029000  1.620E-26
   5.621000  1.210E-26
   5.654700  1.190E-28
   6.794000  2.460E-26
   6.057000  6.170E-27
   6.907700  1.240E-29
   7.114567  7.770E-23
   7.471000  3.170E-26
   7.785000  1.900E-25
   7.916000  5.120E-27

gnuplot is treating the y axis as zeros and drawing a line on the
screen. 
Well I thought by deviding all the y values as
f(y) = y/1.0e-24 /* an arbitrary number supposedly a  median of the y values*/
gnuplot complines undefined y value.

My command script  is as follows.

set terminal tek40xx 
set noxzeroaxis
set data style lines
set logscale y
set output "x.plt"
pop(y) = y/1.0e-26
plot   't1.dat_bak',pop(y) with errorbars
plot   't1.dat_bak',pop(y)
quit

%gnuplot < commands
         line 7: undefined variable: y

         line 8: undefined variable: y

%

Actually the data is spectroscopy data and I need to plot (!!if possible !!)
as a spectrum. 

Any ideas at the earliest of your conveniance.

Thanks in advance.

Jagan

 

Newsgroups: comp.graphics
From: ap@jyu.fi (Patric Aalto)
Subject: Polygon normal direction?
Organization: University of Jyvaskyla, Finland
Date: Tue, 1 Sep 1992 05:45:14 GMT

Hi!

Sorry for this FAQ-like question, but I didn't find a reference to it in
the FAQ, nor in any of the graphics books and articles I have.

I have a set of 3D objects, consisting of polygons (triangles). I would
like to render these objects effectively on my 486. In order to do that,
I need to do backface elimination, among other things. The problem is,
the polygon vertices are in no particular order (about 50% are clockwise,
50% anti-clockwise, I could quess). I can easily calculate normal vectors
for the polygons, but I would need some algorithm to select the correct
direction to this normal. What is the correct algorithm?

I tried to use common sense, and coded an algorithm that sends a ray from
a point in the middle of the polygon to the direction of the normal. I
then checked this ray against all the other polygons, and decided that
if the number of intersections is odd, I must negate the normal direction.
This method works somewhat (after this around 80% of the normals point
to the correct direction). But this obviously is not the final solution.

Could you please help me with this, or point me to a book/article that
would be helpfull?

Thanks in advance,

Patrick Aalto
ap@tukki.jyu.fi
From: hlr@aber.ac.uk (Hazel Marie Davey)
Newsgroups: comp.graphics
Subject: VPGraphics File Conversion
Date: 31 Aug 92 11:59:47 GMT
Organization: University of Wales, Aberystwyth

Does anyone know of a way to convert .VPG files into anything
useful (TIFF,GEM etc).

I have a lot of files in vpg format (VPGRAPHICS, NEWSTAR SOFTWARE)
that I would like to import into winword documents (possibly via 
CorelDraw).

Does a suitable filter exist?

Thanks in advance for your help

Hazel   (hlr@aber.ac.uk)
Newsgroups: comp.graphics
From: steve@aurora.com (Steve Anderson)
Subject: Why 3D clipping?
Organization: The Aurora Group
Date: Sun, 23 Aug 92 22:48:15 GMT

>Why does a 3D object painter need to do 3D clipping?
>Is it necessary, or just a faster way of rejecting
>off-screen objects & polygons?

One big reason besides the faster rejection argument is what to do if
something is partly-on and partly-off the screen. Clipping at the
pixel level for these guys might be expensive, even if you can handle it.

This sort of problem appears in animation especially.

But you are onto something, "real" clipping is usually the last thing
added/debugged to a renderer, partly because you can often get along
without it, but largely, I suspect, because it's not easy to do right,
and usually not as much fun as adding yet-another-cool-rendering-effect.

--steve

-- 
 H. Stephen Anderson			 | email: steve@aurora.com
 The Aurora Group 			 | Phone: (415) 327-3001
 800 El Camino Real, Suite 200           | "If you are what you eat, then
 Menlo Park, California 94025            |  I'm dead meat..."  -- Timbuk 3
Newsgroups: uiuc.general,comp.graphics
From: stgprao@st.unocal.COM (Richard Ottolini)
Subject: Re: NASA/WEATHER SAT images
Keywords: nasa
Organization: Unocal Corporation
Date: Thu, 27 Aug 1992 21:51:42 GMT

In article <Btnn6v.6Iv@ux1.cso.uiuc.edu> lam@ux1.cso.uiuc.edu (Ken Lam) writes:
>I need to locate the sites which carry NASA images esp.
>ones about Hurricane Andrew.
>
>Please email the replies.
>
>Thanks in advance,  Ken Lam
>		    klam@uiuc.edu
			 ^^^^^^^^

I couldn't resist this request.  uiuc.edu is the site, vmd.cso.uiuc.edu cd wx


Newsgroups: comp.graphics
From: kaufman@eecs.nwu.edu (Michael L. Kaufman)
Subject: Re: Speedstar 24X
Organization: EECS Department, Northwestern University
Date: Sat, 29 Aug 1992 17:51:33 GMT

In article <16851F8DE.RMOY@vm.poly.edu> RMOY@vm.poly.edu writes:
>I want to know can the speedstar24x handle 65K colors at 800X600?  

According to a flyer I just got in the mail, The speedstar 24x can handle
16 colors at 1280x1024
256 colors at 1024x768
32768 colors at 800x600
16.7 million colors at 640x480 

Incidently, it will also run in 32768 mode at 640x480.

Michael


-- 
Michael Kaufman | I've seen things you people wouldn't believe. Attack ships on
 kaufman        | fire off the shoulder of Orion. I watched C-beams glitter in
  @eecs.nwu.edu | the dark near the Tannhauser gate. All those moments will be
                | lost in time - like tears in rain. Time to die.     Roy Batty 
Newsgroups: comp.graphics
From: rcj2@cbnewsd.cb.att.com (ray.c.jender)
Subject: 3D Digitizers...again
Organization: AT&T
Date: Wed, 26 Aug 1992 13:47:25 GMT


	I was wondering what is the state of 3D digitizing right
	now? I would think that 3D Digitizing would really be taking
	off right now. Can someone point me to information
	on 3D Digitizing? Manufacturers? Papers? Books? 
	Anything would be nice. Thanks.
Newsgroups: comp.graphics
Subject: PCGLOBE
From: T.D.Sadlier@massey.ac.nz (T.D. Sadlier)
Date: Wed, 26 Aug 92 04:26:10 GMT
Organization: Massey University, Palmerston North, New Zealand
X-Reader: NETNEWS/PC Version 2c

Has anyone heard of PCGLOBE?  If so, help would be appreciated if
you know anything about saving and printing and whether it it
possible to import it to other programmes, ie.  Pagemaker.

Let me know if anyone out there knows of the programme - it's
wild!!

Tanya Sadlier
Newsgroups: comp.graphics
From: schuette@wl.com (Wade Schuette)
Subject: Where bloodcell images?
Organization: Warner Lambert / Parke-Davis
Date: Tue, 1 Sep 1992 09:55:15 GMT

Can anyone point me to a source of images of 
microscope views of blood vessels (capillaries)
at a resolution so that the individual cells
are visible?  Thanks in advance!   Wade. 

-- 
==================================================================
R. Wade Schuette     |  All opinions expressed are personal,    
Ann Arbor, MI USA    |  not to be attributed to my employer.
schuette@wl.com      |
From: A.L.Radtke@bradford.ac.uk (Drew Radtke)
Newsgroups: comp.graphics,uk.misc
Subject: OCR Software Recommendations?
Date: 26 Aug 92 14:23:12 GMT
Organization: University of Bradford, UK
Originator: s3535@mail

A colleague of mine has recently got a HP Scanject IIp scanner (not the
colour one though boo hoo) and she was wondering about getting some
Optical Character Reading software for it.

It's connected to a PC running Windows 3.1 (boo hiss) but it's quite
pleasent to use for scanning tifs etc.

Has anyone any recommendations? I've been looking at Omnipage, but I've
nothing to compare it with.

You can either mail me direct, but if you've any interesting comments
I'd rather to sent them to the group so we can all have a look.

Thanks in advance anyone.
-- 
Drew Radtke * * * * * * * * * * * * * * * * * * * A.L.Radtke@bradford.ac.uk
* * * * * * * * Fax: +44 274 305340 * Voice: +44 274 383180 * * * * * * * *
Newsgroups: comp.graphics,comp.graphics.visualization,comp.sys.ibm.pc.hardware
From: andreas@awstar.rus.uni-stuttgart.de (Andreas Wierse)
Subject: Re: Looking for polygon engine hardware
Organization: Visualization Group Comp.Center (RUS) U of Stuttgart, FRG
Date: Wed, 2 Sep 1992 11:26:11 GMT

In article <34709@cbmvax.commodore.com> chrisg@cbmvax.commodore.com (Chris Green) writes:
>In article <1992Aug27.140202.21662@eng.umd.edu> bigmac@eng.umd.edu (Mike McDonald) writes:
>>I am looking for a PC based graphics card for use as a VR graphics engine.
>>The card needs to be able to produce atleast 20K Gouraud-shaded,100 pixel
>>triangles/second. If anyone knows of any PC (ISA) card(s) like this, please
>>email some information on it.  I will later post a summary of the responses
>>I receive.
>>
>>Thanks,
>>Mike
>
>	You can probably get this rate with just a really fast 486 with a
>fast local bus vga card.
>	Back when I was doing this kind of thing on PC's, we got 2.2Mpixels/second
>in the gouraud shading loop, and that was only on a non-cached 20mhz
>386 with a dog-slow paradise PVGA.

I think Mike didn't just speak about fill-rate, but meant full 3D
Gouraud shaded triangles. This means 20,000 * 3 matrix calculations to
perform every second (if it's a triangle mesh ~ 20,000 +), the whole
clipping stuff, color interpolation, polygon breakdown to spans and
pixels etc.. I'm quite sure that even a fast 486 is not fast enough to
render so much triangles.

BTW, not long ago I read an article about a PC graphics card that
should be able to fill 2,700 Mpixels/second (opposed to ~ 300 for SGIs
or Suns as they said :-). I don't know how they do it, but this seems
to be real fast (if it was no typo :-).

Hope this helps

Andreas

--
 Andreas Wierse              | Institute for Computerapplications II
                             | Dep. Computersimulation and Visualization
 wierse@rus.uni-stuttgart.de | Computer Center University of Stuttgart
 Tel.: ++49-711-685-5796     | Allmandring 30
 Fax:  ++49-711-682357       | D-7000 Stuttgart 80     Germany
From: bthompso@reed.edu (Benjamin Thompson)
Newsgroups: comp.graphics
Subject: Re: What is a good book for Digital Image Processing?
Date: 28 Aug 92 06:00:07 GMT
Article-I.D.: reed.1992Aug28.060007.14036
Organization: Reed College, Portland, OR


The three books that more people recommended were the following:

Jain, Anil K., _Fundamentals of Digital Image Processing_.  Englewood
Cliffs, NJ: Prentice-Hall, 1989.  ISBN 0-13-336165-9

Pratt, William K., _Digital Image Processing, Second Edition_.  New
York: John Wiley & Sons, Inc., 1991.  ISBN 0-471-85766-1

Castleman, Kenneth R., _Digital Image Processing_.  Englewood Cliffs,
NJ: Prentice-Hall, 1979.  ISBN 0-13-212365-7

Thanks again to all of those that responded.  Now I just have to go pick
one of these suggested books to teach me all about DIP.
-- 
Benjamin Thompson                     Welcome my son, Welcome to the machine...
bthompso@reed.edu                     I go to Reed College --- You can trust me
From: vishnu@lsil.com (Vishnu Satya 4318)
Newsgroups: comp.graphics
Subject: Re: (17aug92) comp.graphics Frequently Asked Qu
Date: 29 Aug 92 00:32:31 GMT
Reply-To: vishnu@lsil.com
Organization: LSI Logic Microprocessor Group


---
Vishnu Satya 4318		ext. 4318
From: hubbold@cs.man.ac.uk (Roger Hubbold)
Newsgroups: comp.graphics
Subject: Eurographics'92 -- LAST CHANCE!!!
Date: 1 Sep 92 16:56:02 GMT
Distribution: comp.graphics
Organization: Department of Computer Science, University of Manchester


****************************************************************************
*                   THERE'S STILL TIME TO REGISTER FOR                     *
*                            EUROGRAPHICS '92                              *
*                CAMBRIDGE, ENGLAND, 7 - 11 SEPTEMBER 1992                 *
****************************************************************************



*** NOTE -- special one-day and student rate registrations are available ***



The Eurographics Annual Conference is the leading European conference on
computer graphics, user interfaces, multimedia, computer animation,
visualisation and virtual reality, in a single forum. This year's event
will be held in Cambridge , England, from Monday 7th to Friday 11th
September.

The programme features two days of TUTORIALS, given by leading experts, a
three-day TECHNICAL PROGRAMME with invited papers, refereed technical
papers selected from a large number submitted from around the world, and
State of the Art Reports which offer updates on key areas, SLIDE, VIDEO AND
FILM SHOWS and competitions, and SOCIAL EVENTS offering a chance to meet
people with interesting ideas and views in the unique surroundings of
Cambridge. In addition to all of this there will be an EXHIBITION and an
industry-oriented seminar programme.

****************************************************************************
REGISTER NOW - FOR FURTHER INFORMATION CONTACT:

EG'92 Organisers
c/o Jane Thorp
The Registry
University of East Anglia
Norwich NR4 7TJ
UK

Tel: +44 603 592 802
Fax: +44 603 250 035
email: eg92-organiser@sys.uea.ac.uk

****************************************************************************

Copies of the programme may be accessed by anonymous FTP at siggraph.org
under the directory gen_info/announcements/conferences/eurographics_92

****************************************************************************
--
****************************************************************************
* Dr R.J. Hubbold,                             email: hubbold@cs.man.ac.uk *
* Department of Computer Science,                     Tel: +44 61 275 6158 *
* University of Manchester,                           Fax: +44 61 275 6236 *
* Oxford Road,                                                             *
* Manchester M13 9PL, UK.                                                  *
****************************************************************************
From: cbc0b@jade.cs.Virginia.EDU (C. Brian Cadieux)
Newsgroups: comp.graphics
Subject: triangulating a concave polygon
Keywords: triangulation, concave polygons
Date: 2 Sep 92 22:48:25 GMT
Reply-To: cbc0b@Virginia.EDU (C. Brian Cadieux)
Distribution: usa
Organization: University of Virginia



     I'm looking for code (C, FORTRAN, pseudo code -- whatever
you've got) that will divide a concave planar polygon into
triangles.  Dividing the polygon into the smallest number of
triangles would be ideal, but anything that works would be more than
welcome.  An algorithm (or a title and/or author to a reference with
an algorithm), would also be much appreciated.  Efficiency is nice,
but certainly not a must.

     Thank you in advance for information or answers that you can
provide.  E-mailing me directly or posting to comp.graphics will
both get to me.

Brian Cadieux 
cbc0b@virginia.edu
From: RMOY@vm.poly.edu
Newsgroups: comp.graphics
Subject: Re: Speedstar 24X
Date: 28 Aug 92 22:41:49 GMT
Organization: Polytechnic University

Hi:
 
my question is related to this, kind of.
I want to know can the speedstar24x or spdstar24 handle 65K colors
at 800X600?  I ask because I've seen boards that use the Tseng 4000
chip set and they can handle 65k colors some are Genoa 7900, and
cardinals vga765.  I know that spdstr24X is not based on the Tseng 4000
but also want to know if it can handle 65K colors too ( thespdstr24x,
I've seen advertised shows only 32K colors at 800X600).One other
question, does the speedstar24 or 24X support vesa65k,32k,1.67 mil
colors.  I hope these questions haven't been answeredbefore.
thanx in advance.
 
                                  rock...........
 
Xref: sparky comp.graphics:9265 comp.programming:2531
From: erudite@uflorida.cis.ufl.edu
Newsgroups: comp.graphics,comp.programming
Subject: Re: Use SEGA Master System 3D glasses w/ computer?
Date: 29 Aug 92 07:05:26 GMT
Reply-To: erudite
Followup-To: comp.graphics
Organization: University of Florida  (ufl.edu)
News-Software: VAX/VMS VNEWS 1.3-4

In article <1992Aug25.170723.27930@uvm.edu>, thibault@kira.emba.uvm.edu (Scott A Thibault) writes...
>In article <1992Aug19.000129.22085@microsoft.com> ryb@microsoft.com (Danger Mouse) writes:
>>The local Toys 'R' Us is clearing out old SEGA Master System video games
>>that come with the light pistol and 3D glasses for $50.

  Have you seen the Stereoscopic LCD glasses that several companies have out 
now?  These glasses alternate between the left and the right lens on/off
at a rate of 30 frames/sec.  They work in conjunction with a monitor that is
in sink with the glasses rate.   The image produced by this hardware have all
the workings of an faux 3d model that is readily grasped.  Through the use 
of triangulation methods, the orientation of the glasses is known at all 
times within a 80 degree normal to the screen.  Several companies incorperate
the use of litium batteries within the glasses, eliminating the constaints
of the cord connection between the hardware. 

CHECK OUT THE NEWSGROUPS ON SIGRAPH>>

>>   'Has anyone tried hooking up the 3D glasses to their computer...'

- Brian
From: dmeny@marillion.Corp.Sun.COM (David Meny)
Newsgroups: comp.graphics
Subject: Re: 3d rotation about an arbitrary axis: how?
Date: 28 Aug 1992 23:10:49 GMT
Organization: Sun Microsystems, Inc.
Distribution: world
Reply-To: dmeny@marillion.Corp.Sun.COM
NNTP-Posting-Host: marillion.corp.sun.com
Keywords: 3D rotation matrix graphics gems

Charlie:

From "Graphics Gems" (the original), page 466:

R = rotation_about_axis_by_angle(axis, theta) =

   | txx + c     txy + sz     txz - sy  |
 = | txy - sz    tyy + c      tyz + sx  |
   | txz + sy    tyz - sx     tzz + c   |

where:
    x, y, and z are the components of a unit vector along rotation axis;
    theta is the angular amount of rotation;
    s = sin theta;
    c = cos theta;
    t = 1 - c.

This is a matrix.  To use it, multiply a row vector [x y z 1] by this 
matrix to get your new vector [x' y' z' 1].

I just used this reference in a program I'm writing where I needed to rotate about
an arbitrary axis.  This formula works great.

>> David W. Meny <<
Newsgroups: comp.graphics
From: jim@baroque.Stanford.EDU (James Helman)
Subject: Re: What is a good book for Digital Image Processing?
Organization: Stanford University
	<17lb41INNik7@network.ucsd.edu>
	<1992Aug28.233619.17728@organpipe.uug.arizona.edu>
Date: 1 Sep 92 23:17:57

   jlc@firewalladaclabs.com (Jean-Luc Chatelain) writes:
       
       Pratt, William K., _Digital Image Processing, Second Edition_.
       New York, John Wiley and Sons. (1991) ISBN 0-471-85766-1
       
   newberry@newton.as.arizona.edu (Mike Newberry) writes:

       Yes, but has anyone ever tried to get "useful" information out
       of this book?

Not much for plot or narrative, but it contains a lot of good information.

-jim helman
jimh@surreal.asd.sgi.com
415.390.1151
From: diskount@micromed.com (don hirschfeld)
Newsgroups: comp.graphics
Subject: Commodore SX64
Date: Sun, 23 Aug 92 05:34:55 PDT
Organization: Micro-Medic  - +1 408 279 5240 - Public Access

For Sale:
        Commodore SX64 Transportable
        Compact unit has built-in disk drive, detachable keyboard, and 
        5" color monitor.
        Great for those who go to user groups.
$250 or best offer.
Leave mail or call 415-964-0102 between 5-8PM or 415-855-5597 days.

----------------------------------------------------------------------------
diskount@micromed.com (don hirschfeld)
Micro-Medic BBS                                                (408)279-5240
----------------------------------------------------------------------------
Newsgroups: comp.graphics,comp.graphics.visualization
From: timo.vendelin@vtt.fi (Timo Vendelin)
Subject: adaptive pseudo color program (24bit to 8bit) ?
Keywords: adaptive, color, source code, 24bit, 8bit
Followup-To: comp.graphics.visualization
Organization: VTT/TIK
Date: Mon, 31 Aug 1992 09:08:19 GMT
Reply-To: timo.vendelin@vtt.fi (Timo Vendelin)


Hello,

I have need to show 24 bit image files in 8 bit display.
For that I would like to find some software.

If you know where to find source code for an adaptive
pseudo color program to create a 256-color (8 bit) file
from 24 bit RGB files (3 separate 8 bit files, i.e. R,G and B),
could you please email me.

I will summarize my answers (If I get one).

Thank you,
		Timo vendelin
		email: timo.vendelin@vtt.fi

--
	email:		timo.vendelin@vtt.fi
     	X.400-email: 	C=FI,ADMD=MAILNET,PRMD=VTT,PN=Timo Vendelin
	office_phone: 	+358 0 456 4505
        fax: 		+358 0 455 2839
  	office_address: 	VTT, Technical Research Centre of Finland, 
				Graphic Arts Laboratory
				It{tuulentie 2 B, PL 160, 
				SF-02101 ESPOO, FINLAND
Newsgroups: comp.graphics,comp.windows.x.pex,comp.unix.aix
From: schultz@schultz.kgn.ibm.com (schultz)
Subject: Re: IBM's graPHIGS package, problem with GPNBS, any hint?
Date: Fri, 04 Sep 92 20:25:08 GMT
Reply-To: schultz@vnet.ibm.com
Organization: IBM AWD Graphics Systems
Keywords: PHIGS, graPHIGS, NURBS 

In article <Bu2BFs.Lzw@well.sf.ca.us>, levine@well.sf.ca.us (Ron Levine)
writes:
|> In article <1484@igd.fhg.de> pfuetz@igd.fhg.de (Matthias Pfuetzner) writes:
|> .... stuff deleted...
|> 
|> I'm not sure this is your problem, but it's worth checking:
|> 
|> I haven't worked directly with graPHIGS, but a couple of years ago, when 
|> porting a graPHIGS demo application to DEC PHIGS, I discovered that for the 
|> RATIONAL B-spline case, graPHIGS expects DIFFERENT data from DEC PHIGS, 
|> SunPHIGS, and most of the other implementations.  Namely, for the
coordinate 
|> 4-tuple for the weighted control points, graPHIGS expects the
application to 
|> pass (x,y,z,w), while the other implementations expect (xw,yw,zw,w). 

This is correct, although if the app passes the homogenous form, it usually
results in wierd-looking results instead of a blank screen.  I guess it depends
on how big w is.

|> The PHIGS PLUS DIS Specification document of February 14, 1991 is not 
|> absolutely clear on the point.  It says simply that "When RATIONAL is 
|> specified the control points are specified as homogeneous modelling 
|> coordinates with the restriction that the fourth coordinate be greater than 
|> zero".  Technically, the graPHIGS implementation does not violate the 
|> specification, because (x,y,z,w) are indeed homogeneous coordinates
for the 3D 
|> point (x/w,y/w,z/w).  I guess most people would say that the IBM 
|> interpretation is wrong, but I think it is preferable from the point
of view 
|> of the application, because in most situations it would save the
application 
|> the work of multiplying the 3D coordinates by the weights.

I guess the history behind this was influenced by our supporting graPHIGS
on the IBM 6090.  The 6090 hardware wanted the points in non-homogenous form,
so we didn't see the point behind having the app do the multiply and then the
hardware do the divide.  I'm not sure what the PHIGS PLUS spec said about 
this several years ago either.


Karl Schultz                             schultz@vnet.ibm.com
These statements or opinions are not necessarily those of IBM