HDTenEightyP/NetNews huggingface dataset:
From: checker@acf3.nyu.edu (Christopher Hecker)
Subject: Re: Re-moderating comp.graphics.research
Organization: New York University
Date: Thu, 13 Aug 1992 21:09:24 GMT

hollasch@kpc.com (Steve Hollasch) writes:
>| be online a lot, but I go to sleep sometimes too. :-)  I'd like
>| to suggest that a call be put out for a couple people to form
>| a moderation team.
>    This sounds like a good idea; how would it be implemented?  Has this
>sort of thing been done before?

sci.virtual-worlds has two moderators.

Chris

Newsgroups: comp.graphics,comp.graphics.avs,comp.soft-sys.khoros,comp.sys.sgi
From: mag@minerva.inesc.pt (Manuel Gamito)
Subject: Time Dependent Visualization on Explorer,AVS,Khoros,...
Organization: INESC, Lisboa, Portugal
Date: Thu, 20 Aug 1992 16:50:02 GMT

Hello net!

I am starting to work on a project involving the dinamics of rigid
bodies.
I would like to use one scientific visualization package for this but I
don't know wich one is best.

I know Explorer already (since I'm on an IRIS Indigo) but it doesn't
seem to handle explicitly time varying phenomena.

Am I wrong about Explorer?
Is there other systems better for this kind of simulations over
time like apE???, Khoros, Avs or others.

If you don't know all these systems just tell about the one(s) you know.

Much thanks!!!
-- 
Manuel Noronha Gamito, INESC          		| email: mag@minerva.inesc.pt
R. Alves Redol, 9 Apartado 10105		| mcsun!inesc!mag@uunet.UU.NET
1017 LISBOA CODEX				| Phone: +351 1 3100094
PORTUGAL					| Fax:   +351 1 525843
From: jregehr@matt.ksu.ksu.edu (John David Regehr)
Newsgroups: comp.graphics
Subject: problems porting POV to an i860
Date: 13 Aug 1992 09:20:11 -0500
Organization: Kansas State University
NNTP-Posting-Host: matt.ksu.ksu.edu

I am attempting to port POV 1.0 to a Number-Smasher 860 board running in
a 486, using NDP C/C++ 860.  The program seems to run fine (minus the screen  
display while tracing for now), but the output files are always messed up.    
Most of the time an image will look okay at the top of the screen, but then
bands of different colors will appear, as if the color bytes were reversed.
Also, some images are skewed to the right.           

Does this sound like a compiler problem, or a communications problem somewhere
between the i860 and the hard drive?  I tried re-compiling without any        
optimizations, but it didn't help.

Anyway, I would appreciate any help from somebody who has tried this, or
from anyone with experience with i860s in DOS machines.

-------------------------------------------------------------------
John Regehr
jregehr@matt.ksu.edu
KANSAS STATE UNIVERSITY
-------------------------------------------------------------------

Newsgroups: comp.graphics
From: jk87377@cc.tut.fi (Juhana Kouhia)
Subject: PC/Unix for computer graphics?
Organization: Tampere University of Technology
Date: Wed, 12 Aug 92 21:11:38 GMT



Hi,

I'm looking for IBM PC compatible computer with Unix.
Unix will be free Linux first, but if it fails I have to check
BSD386 or a commercial Unix.

I'm interested in to know how much a compile time and run time memory,
both the RAM+virtual memory and the disk space, various programs
takes.

I have planned to use at least 50 Mbytes for the swap file.
But 100 Mbytes is maximum -- I need disk space for the programs too :-)


Somebody wrote about Rayshade that it used for certain scene 70 Mbytes
run time virtual memory. How complex scene that was?

What about programs/scenes which with images (choose most complex
images) in SIGGRAPH conference proceedings are made?

How much X-window system takes?

How much Khoros takes?


Juhana Kouhia
From: bobmcg@castle.ed.ac.uk (Bob McGonigle)
Newsgroups: comp.graphics
Subject: Boronoi Tessalation
Keywords: Boronoi Tessalation
Date: 18 Aug 92 12:11:22 GMT
Organization: Edinburgh University Computing Service

Anyone got a refernce to "Boronoi Tessalation". Replies direct to me please.

Bob
From: spl@alex.uucp (Steve Lamont)
Newsgroups: comp.graphics
Subject: Re: SigGraph, Chicago, and Unions
Date: 14 Aug 1992 20:39:21 GMT
Organization: University of Calif., San Diego/Microscopy and Imaging Resource
Distribution: usa
NNTP-Posting-Host: alex.ucsd.edu

In article <16gpbvINN375@sixgun.East.Sun.COM> nick@sunpix.East.Sun.COM (Nick England - Sun NC Development Center) writes:
>No it doesn't have anything to do with graphics other than my intro to
>Chicago unions came at SIGGRAPH 89 as a very small exhibitor whose
>entire future was in the hands of these assholes. I'll be quiet now.

Uh... SIGGRAPH 89 was in Boston (another strong Union town), wasn't
it?  Or did I get on the wrong plane again?

							spl

-- 
Steve Lamont, SciViGuy -- (619) 534-7968 -- spl@dim.ucsd.edu
UCSD Microscopy and Imaging Resource/UCSD Med School/La Jolla, CA 92093-0608
"But is there hope to save/Even this ethereal essense from the grave?"
	- James Russel Lowell, "Ode Recited at the Harvard Commemoration"
From: maru@enea.se (Martin Runesson)
Newsgroups: comp.graphics
Subject: uncompress & display CCITT compressed TIFF images (Macintosh)
Date: 12 Aug 92 11:00:27 GMT
Organization: Enea Data AB

Hi,
I am looking for software that uncompress and displays CCITT compressed
(fax group 3 or 4)  TIFF images on the Mac.


Thanks for any hints,


Martin Runesson


 


-- 
 ----------------------------------------------------------------------------
|  ENEA Data  		 TEL +46 8 792 25 00   |     Martin Runesson M.Sc.   |
|  Stockholm - SWEDEN	 FAX +46 8 768 43 88   |         maru@enea.se        |
 ----------------------------------------------------------------------------
From: wirth@igd.fhg.de (Hanno Wirth)
Newsgroups: comp.graphics
Subject: Bug list for Foley/vanDam - where?
Summary: Where is (new?) Bug List for Foley/vanDam
Keywords: bug list, Foley, vanDam
Date: 21 Aug 92 11:12:58 GMT
Followup-To: poster
Organization: IGD FHG Darmstadt, FRG

Hello netters,

a very bad copy of a bug list for the 2.nd edition of Foley/vanDam (ISBN
0-201-12110-7) fell into my hands a few days ago. It's dated "Bug list
(11/1/90)". I'd like to know if

	- there's a possibility to get a good copy of it anywhere via ftp
	  or email server

	- there is a newer version of the bug list.

I'd be grateful for any hints. Please reply by email as I won't be able to
follow this newsgroup for the next two weeks (I'm on holidays :-) and I don't
know how long this newsgroup is stored on our system.

Thanks,
		Hanno

PS.: If there's a better newsgroup to ask this question, please give me a hint.

+--------------------------------------------------+--------------------------+
| Hanno Wirth, Technische Hochschule Darmstadt     | Phone: (+49)6151-155244  |
| FB Informatik, FG Graphisch-Interaktive Systeme  | FAX  : (+49)6151-155299  |
| Wilhelminenstrasse 7                             | EMail: wirth@igd.fhg.de  |
| D-W-6100 Darmstadt (Federal Republic of Germany) | Telex: 4 197 367 agd d   |
+--------------------------------------------------+--------------------------+
From: kiwi@iis.ethz.ch (Rene Mueller)
Newsgroups: comp.graphics
Subject: CIA-World Map Viewer on X11 or PS ?
Date: 17 Aug 92 09:55:01 GMT
Distribution: comp
Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH

I search a X11 viewer for the CIA world map database (*.cbd) files, or a viewer
for PS. My wisg is, that I create a detail Earth rayshade source based on
polygones. Can you help me with some informations about the base or other
tools as 'domap.c'? (I read Database_info, but there are only few informations)

Thank's.
   ,
Rene (kiwi@iis.ethz.ch)
From: frank@whare.cavebbs.welly.gen.nz (Frank van der Hulst)
Newsgroups: comp.graphics
Subject: Re: RayShade, Animator, TgaFli & AaPlay
Date: Sat, 22 Aug 92 10:27:02 NZT
Organization: Tech-Soft Systems, Wellington NZ

M.CRAMER@qut.edu.au (Mark Cramer) writes:

>     The files which TgaFli produces don't have a single palette, so the
> image flickers from frame to frame.  The Docs for TGAFLI say to load the
> Fli in Animator and force it to one palette, which I can do, but then
> AaPlay no longer recognises the Fli file.  The docs also say save the
> single palette in Animator, and use that to recreate the Fli using
> TgaFli. I've tried that too, it just screws up the colours, so they look
> nothing like the originals.
> 
>     Does anyone know what I'm doing wrong?  Or is there another way of
> taking a sequence of TGA files and producing an Fli file, with a single
> palette, that AaPlay can play?

Download PVQUAN15.ZIP (Simtel, <MSDOS/GRAPHICS>) -- It contains a series
of programs to create .FLI animations using Persistence of Vision to
create the scenes. Included is a program to take a set of .TGA files,
generate a single palette, and output (via another program) a .FLI file.

PVQUAN15 is a collection of Public Domain programs, and includes C (Unix
gcc or Turbo-C) source code.

Frank.
From: shk@gserv1.dl.ac.uk (Steve Kinder)
Newsgroups: comp.graphics
Subject: Screendumps on an ESV10
Date: 18 Aug 92 10:26:11 GMT
Reply-To: shk@gserv1.dl.ac.uk
Organization: Daresbury Laboratory, UK

We are running Frodo on an ESV10/33 and need to get good quality dumps of the
windows into postscript for putting onto slides. We have been given a version of
xwd and a program called colordump to convert its output to postscript. This
doesn't seem to produce very good results, our first attempt meerly produced a
black slide. It seems that turning the monitor's brightness up and reducing the
size of the window before dumping produce better results, but it seems to me there
should be a better way of doing it. If there is an image on the screen that one
can see then shouldn't it be possible to produce a good reproduction on a slide.
Any help, advice or suggestions would be appreciated.
Newsgroups: comp.graphics
From: jim@baroque.Stanford.EDU (James Helman)
Subject: Re: SigGraph, Chicago, and Unions
Organization: Stanford University
	<16h5lpINN13p@network.ucsd.edu>
Distribution: usa
Date: 15 Aug 92 00:48:06

nick@sunpix.East.Sun.COM (Nick England - Sun NC Race Track) writes:
   No it doesn't have anything to do with graphics other than my intro to
   Chicago unions came at SIGGRAPH 89 as a very small exhibitor whose
   entire future was in the hands of these assholes. I'll be quiet now.

spl@alex.uucp (Steve Lamont) writes:
   Uh... SIGGRAPH 89 was in Boston (another strong Union town), wasn't
   it?  Or did I get on the wrong plane again?

Unless I'm mistaken, '89 was Chicago and '79 was Boston.
And Nick England got famous around '79 working for one of
those large, three-letter workstation companies.  But then
in the late 80's, he got an urge to start a small company
to do very fast VLIW race car simulators, which was what
caused the aforementioned problems with the unions.  The
battle between the electricians and the auto mechanics was
only resolved when they decided they could both collect
double, cut in the upholstery union and keep the tires.

I also heard his simulators got so good at the motion and
visuals for Italian sports cars, that even he thought they
were real.

-jim

Jim Helman					SGI:  (415) 390-1151
jimh@surreal.asd.sgi.com			FAX:  (415) 591-8165
jim@KAOS.stanford.edu	 			Home: (415) 593-1233

"The power of the computer is locked behind a door with no knob."
							-B. Laurel
From: ss7m+@andrew.cmu.edu (Steven M. Stadnicki)
Newsgroups: comp.graphics
Subject: Graphics Gems III gripe
Date: 17 Aug 92 12:08:27 GMT
Article-I.D.: andrew.QeY0Qvm00WB4EF8HtH
Organization: Robotics Institute, Carnegie Mellon, Pittsburgh, PA

Generally, the book was quite good, though I don't think it was as good as the
first two; perhaps it's just that there isn't much good generalized material
left.  But am I the only person who was annoyed by the 'about the cover'?  It
seemed to me like nothing more than an advertisement for various Renderman-
related products, particularly the VG shaders, and had very little on anything
other than 'we used shader X to get Y effect'...

                              Steven Stadnicki
                              ss7m@andrew.cmu.edu
Newsgroups: comp.graphics
From: noel@reg.triumf.ca (NOEL)
Subject: Re: Positive suggestions about a new FAQ
News-Software: VAX/VMS VNEWS 1.41    
Organization: TRIUMF: Tri-University Meson Facility
Date: Thu, 13 Aug 1992 17:58:00 GMT

In article <1992Aug13.033014.18175@cs.ucf.edu>, wilson@cs.ucf.edu (tom wilson) writes...
>ehgasm2@uts.mcc.ac.uk (Simon Marshall) wrote:
>>In article <1992Aug12.104704.9639@cs.ucf.edu> wilson@cs.ucf.edu (tom wilson) writes:
>>>someone2 wrote:
>>>>someone wrote:
>>>>>So can't you be quiet now?
>>>>Et tu, et al.
>>>Pone argumentum in nugarum tuo ordine.
>>Hmm.  Is this ROT-13?  My newsreader doesn't seem to unscramble it?  Hmm.  It's
>>about a FAQ, so it must be personal abuse anyway...
> 
>No it's Latin-753BC. It says: Put the subject in your kill file (it's supposed
>to, anyway).
> 
>Basically, the FAQ war doesn't belong in c.g, but it does need to be discussed
>for the group's improved future. If readers do not want to read the junk, put
>the subject (and the spawned subjects) in your kill files. If you don't have
>kill files...
> 
>It's the only thing I have been reading since the remaining articles are FAQs
>or uninteresting (to me) subjects.
> 
>Tom

	If these faq stabbing petty squabbles really cease, I am going to
miss them in a perverse and curious kind of way.  I haven't gleened a lot
of graphics gems but as for insight into how really petty and fragile an ego
can be, it is better than two semesters of child psychology. It even surpasses
the daytime soaps. What we have is a network version of "Dynasty". So lets 
keep things rolling by adding our own personal jibes to fuel the fire until
we "tune in tomorrow" for another episode. Don't these people realize the 
world is watching. They are going to be very embarressed if they ever grow up.

					Noel@reg.triumf.ca
From: brianp@meteor.wisc.edu (Brian Paul)
Newsgroups: comp.graphics
Subject: Quaternion questions
Date: 13 Aug 92 20:15:13 GMT
Organization: University of Wisconsin, Meteorology and Space Science


I'm trying to implement a rigid body simulation with the notes from
my SIGGRAPH '92 course "An Introduction to Physically Based Modeling".
I am using quaternions to represent object orientations and have a few
questions:

Suppose I implement quaternions as a 4-element vector q[4] where:
   q[0] = i axis
   q[1] = j axis
   q[2] = k axis
   q[3] = rotation value

Is this the correct way to normalize a quaternion to unit length?
   double mag = sqrt( q[0]*q[0] + q[1]*q[1] + q[2]*q[2] + q[3]*q[3] );
   q[0] /= mag;
   q[1] /= mag;
   q[2] /= mag;
   q[3] /= mag;


How does one scale a quaternion?  In Baraff's notes on the bottom of
page H23 there is the C++ expression:
   quaternion qdot = .5 * (rb->omega * rb->q);

where rb->omega and rb->q are quaternions.  If p is the product of
the two quaternions then is  .5 * p  correctly computed by:

  p[0] *= 0.5;
  p[1] *= 0.5;
  p[2] *= 0.5;
  p[3] *= 0.5;

But if p was of unit length before, it won't be after this operation.
Therefore, won't the quaternion deviate from being a pure rotation since
it no longer has unit length?

The reason I have these questions is that I'm seeing some "drift" rotation
when doing a "pure" Y-axis rotation.  I've tried re-normalizing the
quaternions at various stages and tried variations on the quaternion
scale method without success.  I have the Shoemake articles referenced by
Baraff but I haven't found answers there either.

Thanks

-Brian Paul
Newsgroups: comp.graphics,comp.multimedia
From: steve@dmntor.UUCP (Steve Pozgaj)
Subject: Need Info on NorthShore/Genesis
Summary: Anyone heard of these outfits?
Keywords: video manipulation, scaling, zooming, filtering
Organization: Digital Media Networks, Toronto, Canada
Distribution: na
Date: Wed, 12 Aug 92 18:45:11 GMT

I have recently been made aware of some "phenomenal" [so-claimed]
algorithmic advances made by a David Sarnoff spinoff outfit called
NorthShore Inc in the field of video processing.  They are teaming up
with a Canadian fabless chip designer called genesis to press this
algorithm into Silicon.  The most wonderful superlatives are being
used to describe the venture ... yet nothing concrete has emerged
in over six years of "action".

Any knowledgeable video/graphics/multimedia types out there know
anything about any of this?  I'd sure appreciate hearing.
-- 
Steve Pozgaj (signature in postmark; cute remarks in comics section)
From: lilleyc@cs.man.ac.uk (Chris Lilley)
Newsgroups: comp.graphics
Subject: Re: HELP! XWD -> GIF/PICT
Date: 13 Aug 92 00:07:07 GMT
Reply-To: lilleyc@cs.man.ac.uk (Chris Lilley)
Organization: Department of Computer Science, University of Manchester UK

In article <1992Aug12.172514.24659@oracle.pnl.gov> d3g450@tnp_op.pnl.gov (MC Pottier) writes:

>   I need to convert XWD images from a Sun sparcstation to either a PICT or
>GIF format. Does anyone know of a RELIABLE way of doing this? (utilities,
>programs, applications). I've tried the ppm utilities, (xwdtoppm ppmtogif) and
>they don't work. I end up with black bitmaps...

First, are you sure the XWD are correct, you are using the latest
version,etc

After that, you can avoid the ppm to gif bit, but its tricky. I do not
know of a way to convert xwd to anything much other than ps or ppm.

You will need to know the gamma of your monitor for this, as it
assumes corrected (linear) RGB values.

xwd (yor preferred options) | xwdtopnm |ppmtorle | rleflip | rleswap
-t 2,1,0 |to8 -g (yourgamma) | rletogif > file.gif

rleflip is because the origins are different for xwd and rle files,
rleswap because they store RGB in different orders. to8 is an
optimised 24 to 8 quantiser. It emits an 8 bit file with an assumed
gamma of 2.5. You can change that if it is not suitable.

I use a similar pipeline to display 24 bit gamma corrected versions of
un-gamma corrected 24bit windows. xwdtopnm works fine for me. I can't
say about ppmtogif, I don't use it.




--
Chris Lilley
---------------------------------------------------------------------------
Technical Author, ITTI Computer Graphics and Visualisation Training Project
Computer Graphics Unit, Manchester Computing Centre, Manchester, UK
Internet:   lilley@cgu.mcc.ac.uk        Janet:   lilley@uk.ac.mcc.cgu
Voice:      +44 (0)61 275 6095          Fax:     +44 (0)61 275 6040
---------------------------------------------------------------------------
From: galanter@nyu.edu (Philip Galanter)
Subject: Re: SigGraph, Chicago, and Unions
Reply-To: galanter@nyu.edu (Philip Galanter)
Organization: New York University
Date: Tue, 18 Aug 1992 02:14:57 GMT

Its time to migrate this somewhere other than comp.graphics...but...

In article <1992Aug17.203830.26802@sunspot.noao.edu> bob@sunspot.noao.edu  
(Bob Riegelmann) writes:

|
|Personal soapbox mode on --
|
|I think it is an attitude problem for them. "I'm entitled to a 
|job, no matter how bad I do it, nor how much I overcharge."  They should 
|try running the company for a while and find out what the world is really  
like.

I think the above shows who is out of touch with what.  The world is  
really like what most people experience...working for a boss.

Our economy depends on both workers and execs.  I think the economy would  
gain more if the execs could see through the workers eyes than vice versa.
Try not to forget who makes the decisions and has the (concentrated)  
power.  Unions are an attempt to level what is by definition an unlevel  
playing field.  

|
|In another point, several union leaders have come out against the free  
trade 
|agreement. I have seen what is going on along our borders, the jobs they
|think we will lose to folks to the south, are already lost, right here in 
|the states.  For those of you who live along the southern border, look at
|your service industry, landscapers, housekeepers, custodians, etc. are 
|predominately hispanic, most legal, some not.  The only way to solve the
|jobs problem is to make the border areas (both US-Canada and US-Mexico)  
as
|prosperous as we (US) are.  Only then will the "cheap labor" problem  
stop. 
|So get off it unions, use some vision.

Its the border areas between rich and poor _within_ the US that needs to  
attended to first...and its the Bush who lacks "the vision thing"...but  
here there is no lack of vision on either side of this issue.  Unions  
rightly see this as an attempt by those at the top to increase their slice  
of the pie by cutting the workers slice thinner.  And Bush sees it the  
same way.  There is a lack of _candor_, of course, on the Bush side.

The last 12 years of Reagan/Bush are either a successful attempt to  
increase the gap between the rich and the working class, or an  
unsuccessful attempt to do something else.  Either way, its time for a  
change.  

Phil

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Philip Galanter         New York University    phone:    212-998-3041
Research Associate      251 Mercer             fax:      212-995-4120
Academic Computing      New York, NY 10012     internet: galanter@nyu.edu
 
   O f f i c e   o f   A r t s   &   M e d i a   T e c h n o l o g i e s
Newsgroups: comp.graphics,alt.graphics.pixutils
From: wilkie@unixg.ubc.ca (Donald Wilkie)
Subject: fli archive
Originator: wilkie@unixg.ubc.ca
Organization: University of British Columbia, Vancouver, B.C., Canada
Distribution: na
Date: Thu, 13 Aug 1992 21:01:40 GMT

does anyone know the location of a fli animation file archive?
 
email please to wilkie@unixg.ubc.ca
Newsgroups: comp.graphics
From: IQ00000 <IQ00@polytec1.polymtl.ca>
Subject: Re: Facial Animation ftp?
Organization: Ecole Polytechnique de Montreal
Date: Sat, 15 Aug 1992 21:52:26 GMT

In article <1992Aug10.082916.3963@ppgfr.uucp> wolpert@mars (Florian Wolpert) writes:
>krhobson@uokmax.ecn.uoknor.edu (Kenneth Ray Hobson) writes:
>: I too would like the ftp site and name ffor the facial animation program, thanks:-]
>
>so did I !!!
>
>--
>OUT OF ORDER 2i-d&s : wolpert%dandsnx.uucp@germany.eu.net (NeXTmail preferred)
>Hellige : wolpert%ppgfr.uucp@germany.eu.net
>uni-fr  : wolpert@informatik.uni-freiburg.de
>snail-mail to 2i Industrial Informatics, Haierweg 20e, D-7800 Freiburg
>.
>.
so did I !!!!
Ciro Palludetti
Genie Biomedical - Ecole Polytechnique de Montreal
E-mail IQ00@polytec1.polymtl.ca

Newsgroups: comp.graphics
From: jwindley%asylum.cs.utah.edu@cs.utah.edu (Jay Windley)
Subject: Re: SigGraph, Chicago, and Unions
Date: 14 Aug 92 10:53:49 MDT
Keywords: Coffee Break!
Organization: University of Utah CS Dept

claude+@cs.cmu.edu (William Welch) writes:
>Though generally less polite. My favorite story involves a paper
>session which began to run overtime, and would thus have impacted a
>scheduled AV coffee-break. Supposedly, the crew began flashing a
>message on the speaker's monitor: "Stop Talking".

During the papers I sat where I could see the AV control panels,
including the speaker's monitor.  Several speakers went over their
allotted time, including the keynote speaker.  The first message to
flash on the screen was (in all cases which I personally saw) "You
have X minutes left," where X was decremented from 5 to 1.  The next
message was "Your time is up," which remained displayed for five or so
minutes, then the infamous "Stop" message.  This never occurred until
the speaker had gone at least ten minutes overtime, and never without
having had previous warning.

I think the coffee break story is a bunch of hooey.  How do you know
that the messages weren't being displayed at the request of the
session moderator?  How do you know that the speaker involved hadn't
simply ignored the previous polite requests to wrap it up?

I only bring this up because unsubstantiated stories like this one
have the tendency to be spread around and cause undue embarrassment
and difficulty for those involved.  Apologies if I have offended.
--------------------------------+---------------------------------------
Jay Windley                     | jwindley@asylum.cs.utah.edu
Department of Computer Science  +---------------------------------------
Univ. of Utah, Salt Lake City   | "Okay, NOW I'm worried."  -- Batman