HDTenEightyP/NetNews huggingface dataset:
From: clem@bach.udel.edu (Clement Gray Taylor)
Newsgroups: comp.graphics
Subject: Fixed point multiple precision arithmetic source?
Date: 20 Aug 92 23:31:36 GMT
Article-I.D.: news.BtB2op.GHq
Distribution: usa
Organization: University of Delaware

In Dr. Dobb's Journal (August 1992) there is an article titled
"Multiple-Precision Arithmetic in C" that features a simple "big int"
package. Has anyone heard of a similar PD package that supports high
precision (say 256 bit) fixed point math. A graphics project that I am working
on requires such a package, and I currently don't have enough time to start
from scratch. Any help would be greatly appreciated.

---
Clem Taylor - clem@bach.udel.edu - ctaylor@apollo.sarnoff.com
From: pace@tabarzin.usace.mil (Joe Pace)
Newsgroups: comp.graphics
Subject: Microtek 600 ZS Scanner driver for unix
Date: 14 Aug 92 19:33:59 GMT
Organization: US Army Corps of Engineers, Sacramento District

Are there any UNIX device drivers available for the Microtek 600 
scanner (it uses a SCSI interface)?

Thanks.

Joe
-- 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Joe Pace                                              UNIX/Networking Analyst
US Army Corps of Engineers                                     pace@usace.mil
Sacramento District                                     JPPACE@UCDAVIS.BITNET
Newsgroups: comp.graphics
From: spl@szechuan.uucp (Steve Lamont)
Newsgroups: comp.graphics,talk.politics.misc
Subject: Re: SigGraph, Chicago, and Unions
Followup-To: talk.politics.misc
Date: 19 Aug 1992 18:50:52 GMT
Organization: University of Calif., San Diego/Microscopy and Imaging Resource
NNTP-Posting-Host: szechuan.ucsd.edu

In article <Bt8Gnv.BIA@watserv1.uwaterloo.ca> broehl@sunee.uwaterloo.ca (Bernie Roehl) writes:
>People wonder why the U.S. and Canada are losing the productivity battle
>to the rest of the world, and I think a large part of the answer lies with
>the big labor unions.

Oh.  That must be why companies are leaving Right To Work states (for
example, Proctor-Silex leaving North Carolina for Mexico) for Mexico,
Singapore, Taiwan, and so forth, because of the "power" of the big
labor unions.

The productivity battle is being "lost" because of short-sighted,
bean-counting management that only looks as far as the quarterly
bottom line and how the stock market will react.

I see no graphics in this or any other posting in this thread.
Followups directed to talk.politics.misc.

							spl
-- 
Steve Lamont, SciViGuy -- (619) 534-7968 -- spl@dim.ucsd.edu
UCSD Microscopy and Imaging Resource/UCSD Med School/La Jolla, CA 92093-0608
"O generation of the thoroughly smug/and thoroughly uncomfortable...
.. the fish swim in the lake/and do not even own clothing." - Ezra Pound
Newsgroups: comp.graphics
From: acc@basinger.inescn.pt (Antonio Costa)
Subject: Ray-tracing scenes
Keywords: Ray-tracing
Organization: CG & CAD - INESC Norte
Date: Wed, 12 Aug 92 22:37:14 GMT

Hi.

For everybody that uploaded the RTrace ray-tracer (at asterix.inescn.pt
[192.35.246.17] in directory pub/RTrace), I have put a lot of scene files
(both in SFF and SCN format) in directory pub/RTrace/scene-demos

Many have been converted from other graphic formats (NFF, T3D, OFF).
Others have been converted from chemical/molecular/medical data.

Please fell free to contact me (acc@asterix.inescn.pt or
basinger@inescn.pt)

PS: the MAC version of RTrace (for THINK C compiler) is almost ready.
Please contact Reid Judd (reid.judd@east.sun.com) to get the program.

Regards,
Antonio Costa.
.........................................................................
     O     O
    /     /                        I N E S C
   | O   |        Antonio Costa        | E-Mail   acc@asterix.inescn.pt
   | |\  |   O                         |          acc@basinger.inescn.pt
   | | \ |  /  O  Comp. Graphics & CAD | DECnet   inescn::a_costa
   | |  \| /  /                        | VAX-Mail +26802001576::a_costa
   | |  /  | |    Largo Mompilher 22   | UUCP     {mcvax,...}!...
   O | |-O | |    4100 Porto PORTUGAL  | Bell     +351+02+321006
    /   \ /   \
   O     O     O          "Let the good times roll..."
From: reddy@spso.gsfc.nasa.gov (Jagan Reddy)
Newsgroups: comp.graphics
Subject: wanted x/y plotting software for character terminal, on UNIX.
Summary: I am looking for a very primitive x/y plotting software for
Keywords: sun, plot vt100
Date: 12 Aug 92 15:13:35 GMT
Organization: Goddard Space Flight Center

Hi,

	I am looking for x/y plotting software that can be used
to plot a very primitive plots like frequency historgrams etc for
character based terminal on sun(unix).

	I would appreciate if anyone has any idea. I am posting this
only after exhausting all available resources at my place.

Thanks
Jagan.
Xref: sparky comp.graphics:8949 sci.math:10371
From: pjt@newton.cs.jhu.edu (Paul Tanenbaum)
Newsgroups: comp.graphics,sci.math
Subject: Delaunay Interpolation
Keywords: surface interpolation, Delaunay triangulation, CAGD
Date: 18 Aug 92 17:41:21 GMT
Organization: Johns Hopkins Computer Science Department, Baltimore, MD


     Suppose I have a bunch of sample points from the boundary of a closed
volume in $R^3$.  Suppose in particular that I have been given the Delaunay
triangulation of these boundary points.  I'd like to interpolate a $C^3$
surface through these vertices.  The related surface-interpolation algorithms
I've found seem not to be applicable:  they either assume that the
triangulation is regular (usually of degree six) or that the surface is
monotonic with respect to some plane.
     Does there exist an algorithm to solve this problem?  References to
the literature would be greatly appreciated.
     Thanks,
     +++paul
Newsgroups: comp.graphics
From: chapman@cs.sfu.ca (John Chapman)
Subject: Re: Worst of SIGGRAPH
Organization: CSS, Simon Fraser University, Burnaby, B.C., Canada
Date: Thu, 13 Aug 1992 21:00:40 GMT

In article <1992Aug13.165330.17458@allegra.att.com> don@allegra.att.com (Don Mitchell) writes:
>I've indulged in some SIGGRAPH kvetching myself, so I can agree with
>some of Rick Speer's comments about things like the terrible electronic
>message system.  But...
>
>>    'old-boy' network... The growing suspicions are not helped by things
>>    like Pat Hanrahan, a session chair, refusing to answer a question from
>>    the floor about how and why a particular paper was accepted...
>
>
As far as "old-boy" networks goes I think this relates to a feeling of
exclusivity and the creation of what are sometimes known as "privileged
dialogs". Further along those lines are the division of the world into
"those who go to siggraph" and "those who can't go to siggraph"; this
sort of division is further exacerbated when valuable research tools
like the CD-ROM proceedings are only available to attendees (yes I know
it was an experiment, but still....) - why aren't they available to
regular siggraph members along with the proceedings which they will
automatically get as members? In any organization where there is a
lot of volunteer work there will inevitably be a group of "in" people
who are seen as distinct by those on the outside (who benefit from their
work); however when resentment starts to percolate through the masses
and the very process of refereeing is called into question (as has 
apparently happened here) then perhaps it is time for a little
Cultural Revolution (sometimes translated as "agonizing re-appraisal").
From: pererik@cmi.no (Per-Erik Nordbo)
Newsgroups: comp.graphics
Subject: CIA Map archive B encoding algorithm
Date: 17 Aug 92 11:57:06 GMT
Organization: Chr. Michelsen Institute

1) Is the ENCODING algorithm of the CIA Map archive B ftp-able somewhere?

2) Has anybody closed the coastline lists for filling purposes?

Thanks

--
Per Erik Nordboe, CMI, Norway
pererik@cmi.no
Xref: sparky comp.graphics:9018 comp.periphs:1151 comp.graphics.avs:694
From: merritt@provolone.bchem.washington.edu (Ethan A Merritt)
Newsgroups: comp.graphics,comp.periphs,comp.graphics.avs
Subject: Re: Dial/Knob Boxes?
Keywords: CAD/CAM 3-D-Graphics Visualization
Date: 20 Aug 92 17:30:52 GMT
Article-I.D.: u.1992Aug20.173052.8036
Reply-To: merritt@u.washington.edu
Followup-To: comp.graphics.avs
Organization: University of Washington


In article <12715@lupine.ncd.com>, keg@hansen1.ncd.com (Ken Garnett) writes:
|> I'm looking for manufacturers of input devices commonly known as
"Dial Boxes"
|> or "Knob Boxes".  These are units composed of multiple rheostat-like knobs
|> which each can generate ranges of integer values.
|> 
|> If anyone has information on who manufactures these devices, I'd appreciate
|> any pointers to them.  Detailed information like model names/numbers would
|> be helpful, too, if you've got that handy...
|> 
	The ones I have are made by Spectragraphics / 9707 Waples St /
San Diego 92121 / (619)450-0611.  They are re-sold by DEC for use with
DEC workstations, but should be usable anywhere since they just plug in to
a normal serial port.

	I am posting this rather than simply mailing a response because
it raises a gripe I have with a lack of flexibility in AVS as regards to
interactive input.  It would be awfully nice if there were some generalized
input port to all the 3-D viewers (particularly "render geometry") which
would take ascii input and rotate/scale/translate/etc.  That way one
could actually _use_ the dial box (it's not supported on the AVS version
I have), or bind function keys to give pure axial rotations, discrete scaling
increments, or whatever.  I.e., whatever bit of code is polling the mouse
buttons and pointer motion could equally well pay attention to input on the
ascii port.

	Any hope of seeing such an approach in a future version? Or anyone
have any bright ideas about how to approximate it given the tools that are
there right now?  I realize that one could create modules which essentially
take over the maintenance of the transformation matrices upstream of the
geometry viewer, but this seems like a wasteful duplication of code and
likely of compute time also.

					Ethan A Merritt
					merritt@u.washington.edu
Newsgroups: comp.graphics
From: foo@netcom.com (Mark Hall)
Subject: Re: SigGraph, Chicago, and Unions
Date: Fri, 14 Aug 92 17:35:32 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Followup-To: talk.politics.misc
Keywords: Coffee Break!

In article <1992Aug14.154616.7014@engage.pko.dec.com> wwlk@riscee.pko.dec.com (Bill Licea-Kane) writes:
)In article <BsyK9q.18s.2@cs.cmu.edu>,claude+@cs.cmu.edu (William Welch) writes:
)
)[stuff deleted about something that happened ]
)   [more stuff deleted, this time a hypothetical case]

   No hypothetical cases, please. 

   There were *many* union horror stories from the SIGGRAPH conference
week. The bottom line is the union guys had the attitude of 'let's screw 
the conference for as much money for as little work as possible.' 
And it works, short term. It just makes SIGGRAPH want to avoid Union 
towns in the future. 

   Just a few: 

      Student volunteers were not allowed to carry cardboard signs to the
   various locations. "That's a Union Job". Of course, the signs were 
   then just stuffed into the holders haphazardly. For example, there 
   were three "Radiosity" signs in the same holder. I had to redo all
   the signs at the papers and panels. 

      Student volunteers were not allowed to change tapes or press 'rewind'
   at the Living room screening room. "That's a Union Job." 

      The AV people had to routinely hand out cash to get the union
   guys to actually start work. Do you wonder how the foreman could 
   afford the Ferarri(no joke) he drove up in?

      There was a robot arm in the art show. Before it could be set up,
   the union guys had to decide who had jurisdiction to move it. Teamsters
   move general stuff. The Electricians handle computers, and this 
   had lots of microprocessors. Another Union was in charge of setting 
   up the Art Show. Elapsed time to discuss this: 6 hours.

      and my favorite: 

      The normal speakers in the Arie Crown theatre had to be removed 
   from their perch near the ceiling because they interfered with our 
   projection. The unions said that would take 10 guys 8 hours. After 
   *long* negotiations, they accepted 4(or was it 8) guys on an 8 hour 
   call. What happened was: two guys rolled carts out from a closet and 
   placed  them underneath the speakers. Another guy walked over to 
   a wall panel and threw a switch. The speakers came down onto the 
   carts. Elapsed time: 10 minutes. Of course, now the guys had 7 
   hours and 50 minutes to spend doing other things, at *your expense*. 
   

   - mark hall

   FOLLOWUPS TO talk.politics or anywhere else but comp.graphics
 since this is going to get even farther from graphics. At least 
 no mention was made of the F*Q. 

Newsgroups: comp.graphics
From: andy@osea.demon.co.uk (Andrew Haveland-Robinson)
Subject: GIF -> PCL filter needed 
Distribution: world
Organization: Haveland-Robinson Associates
Date: Sat, 15 Aug 1992 04:19:48 +0000


In article <joerg.713273234@iiasa> joerg@iiasa.ac.at writes:

>  I'm a graphics neophyte who is trying to print some color GIF images 
>on an inkjet printer that only understands HP's PCL. Does anyone know
>of a filter which will convert GIF -> PCL? Actually, I would be interested
>in any filter which converts from one of the standard graphics formats
>(GIF, TIFF, JPEG, etc) -> PCL. Unfortunately, an Archie search has come
>up with zip. Any help would be appreciated.
>

You need Image Alchemy.  It will do what you want and much, much more.
It's shareware and the unregistered version converts up to 640x480 images.
Well worth registering.  Email them and they will mail you the uuencoded exe.

I quote from the help screen:

    For support or update information contact:

        Handmade Software, Inc.
        15951 Los Gatos Blvd., Suite 17
        Los Gatos, CA  95032

        +1 408 356-3297 bbs
        +1 408 356-4143 fax
        +1 408 358-1292

        UUCP:  hsi@netcom.COM
        Cserve:  71330,3136

Andy.

+-------------------------------------------------------------------------+
| Haveland-Robinson Associates     | Email: andy@osea.demon.co.uk         |
| Pine Cottage, Osea Island, Essex |        ahaveland@cix.compulink.co.uk |
| CM9 8UH England.  0621-88756     | Also:  081-800 1708  081-802 4502    |
+-------------------------------------------------------------------------+
Newsgroups: comp.graphics
From: dougb@comm.mot.com (Doug Bank)
Subject: Re: SigGraph, Chicago, and Unions
Reply-To: dougb@ecs.comm.mot.com
Organization: Motorola Land Mobile Products Sector
Date: Wed, 19 Aug 1992 18:14:36 GMT

In article <hersh.714074256@xenon.lcs.mit.edu>, hersh@expo.lcs.mit.edu (Jay Hersh) writes:

|> I don't know about other portions of the conference (though I've heard horror
|> stories of $700 slide projector rental costs since an Electrician was
|> required to plug it in, and an operator to run it), but it is clear from
|> these 2 examples alone that Union wages in Chicago are higher for comparable
|> services in other not-necessarily union towns as Boston or Las Vegas,
|> and that the work rules were substantially less flexible.
|> 
|> I would expect things will have to change substantially before SIGGRAPH 
|> goes back to Chicago as my hearsay understanding of the impression of those
|> involved was that people were generally unhappy with certain portions of the
|> conference (such as I mentioned above), and that much of this was a factor
|> of inflexible work rules and union costs.

This is not a problem with Chicago.  This IS a problem with McCormick place.  The
unions there are going to drive all the conventions away from this town.  They
don't seem to realize that a parasite eventually kills the host.....

-- 
Doug Bank                       Private Systems Division
dougb@ecs.comm.mot.com          Motorola Communications Sector
dougb@nwu.edu                   Schaumburg, Illinois
dougb@casbah.acns.nwu.edu       708-576-8207                    
Newsgroups: comp.graphics
From: u7816004@cc.nctu.edu.tw ()
Subject: More colors in ACAD?
Organization: National Chiao Tung University
X-Newsreader: Tin 1.1 PL4
Date: Mon, 17 Aug 1992 10:48:14 GMT

Hi, everybody :
   I want to use more than 16 colors at the same time in Auto CAD, but it
seems to fail. My computer is 486DX-33, SVGA, ET-4000, and ACAD R10. Does
it need 8514A graphic card to use more than 16 colors? Or it is just a
problem in configuration?
   Any response or suggestion would be appreciated.

Thanks.


                                           Tsai Wang Kai
                                           Civil Engineering Dep., NCTU
                                           Hsinchu, Taiwan, ROC
                                           E-mail:  u7816004@cc.nctu.edu.tw
From: lilleyc@cs.man.ac.uk (Chris Lilley)
Newsgroups: comp.graphics
Subject: Re: Is there a mathematical relationship RGB -> wavelength?
Date: 17 Aug 92 13:27:35 GMT
Reply-To: lilleyc@cs.man.ac.uk (Chris Lilley)
Organization: Department of Computer Science, University of Manchester UK

In article <mcdonald.207@aries.scs.uiuc.edu>
mcdonald@aries.scs.uiuc.edu (J. D. McDonald) writes: 

>In article <5760@m1.cs.man.ac.uk> lilleyc@cs.man.ac.uk (Chris Lilley) writes:

>>In article <1992Aug13.233117.21185@cco.caltech.edu>
>>nyet@cco.caltech.edu (n liu) writes: 

>>>Keep in mind that our color sense is
>>>extremely crude, i.e. we can't tell the difference between pure magenta
>>>and a spectrum that contains a spike at blue and a spike at red. 

>>Yes, all colours are seen as a single sensation.

>That is only true for objects covering a large field, with soft
>edges. In fact, if you have a small object or a sharp edge, it
>is not true due to chromatic aberration in the eye. The effect is 
>very striking indeed and both psychedelic and disconcerting when viewing
>the compound color, especially with very red reds and very violet 
>"blues". 

Yes, that is true, although I suggest that `large' a misnomer; you can
get a single colour with small (1 degree or less) fields. My point was
that you cannot separate out the orange, say, from a compound colour
such as white. I accept that some clues can be obtained with purples
by abberation fringes at the edges. Particularly if the achromatic
contrast between colour and background is high - one reason for the
neutral grey background favoured in colour matching.

And actually, I should have picked up a point in n. liu's post. There
*is* no pure magenta. It is *always* a mixture of violet and red. I
suspect we are using the word pure in subtly different ways.

>Doug McDonald









--
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
---------------------------------------------------------------------------
Newsgroups: comp.graphics
From: mpulver@research.canon.oz.au (Mark Pulver)
Subject: Wanted: 1 seconds worth of motion
Organization: Canon Information Systems Research Australia
Date: Wed, 19 Aug 1992 22:25:31 GMT

Can anyone point me to any archive of sequence of images that would form
a second or two of a moive.  Resolution does not matter (much). The ideal
sequence would be a talking face, something to lots of movement in some areas
and little in others.

Thanks.

Mark
Newsgroups: comp.graphics
From: abucior@ugly.UVic.CA (Alan  Bucior)
Subject: Ray tracing a height field
Organization: University of Victoria, Victoria, BC, Canada
Date: Wed, 12 Aug 92 21:14:19 GMT

I'm experimenting with some techniques of doing my own texture mapping,
and I was wondering if anyone knew of a fast technique of intersecting
rays with a height field.  Subdividing the height field into polygons
is a possibility, but it just seems like there must be an easier and
faster way. Does anyone have any ideas of how to intersect rays with a
height field?

Any help appreciated.
Al.
-- 
 Alan Bucior             |  University of Victoria  
 abucior@sirius.uvic.ca  |  Victoria, British Columbia, CANADA
From: wwlk@riscee.pko.dec.com (Bill Licea-Kane)
Subject: Re: SigGraph, Chicago, and Unions
Keywords: Coffee Break!
Organization: Digital Equipment Corporation, Maynard MA.
Date: Fri, 14 Aug 1992 15:46:16 GMT

In article <BsyK9q.18s.2@cs.cmu.edu>, claude+@cs.cmu.edu (William Welch) writes:

[stuff deleted...]

|> >At the end of the day they [union workers] are  
|> >just like you, tired and a little bit older...
|> 
|> 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".
|> 
|> Yep, they sure showed us.
|> 
|> -- will

	A short lesson on politeness....

	Let's change your favorite story just a little bit....


	A speaker is running overtime.  The AV crew, who have been
	working for several sessions now, are "polite" and allow the
	speaker to run over.

	The speaker may actually notice many people leaving the session
	and arriving to the session, but continues to talk.  Or perhaps
	the speaker is inexperienced, and just doesn't notice.

	The next session chair is also polite, and allows the speaker
	to run into a few minutes of the next session.  But finally,
	the next session chair gives the high sign, and then very
	politely, the speaker says thank you very much and several
	people follow out to the hallway to continue the discussion.

	The AV crew, who are polite, miss their break and continue their
	job for the next session.


	Out in the hall, the speaker politely discusses the paper with
	several people for a number of minutes.  Slowly, people politely
	excuse themselves.  Finally, the speaker is left with one or
	two other people, and they continue for several more minutes.

	Eventually, the speaker politely thanks the now very small
	audience in the hallway for their long attention and excuses
	herself.  She heads for the bathroom, and then to a coffee shop
	where she meets with some colleages.


	Back in the auditorium, since the session started late, the
	speaker is again running late.  He doesn't notice people are again
	leaving and arriving.  But the AV crew, who are polite, suffer
	in silence.  The sessions run together again, the speaker heads
	out with a small entorage in tow, they talk for a while, and then
	he thanks the remaining and takes his break and heads for the
	bathroom and then meets some colleagues in a coffee shop.


	Back in the auditorium, the next speaker is starting late.  One of
	the polite AV crew finally mutters quietly "I'll be right back" and
	dashes for the bathroom.  The speaker, who after a few minutes
	of talking pushes the button for the first slide.  But it's the
	wrong button, so nothing happens.  The speaker calls out "uh,
	first slide please?"  No response.  "Uh, first slide please?"
	Still no response.  At this point, many people are wondering
	whatever happened to the AV crew.


								-mr. bill
-----
Bill Licea-Kane
Digital Equipment Corporation
Newsgroups: comp.graphics