HDTenEightyP/NetNews huggingface dataset:
From: mavuduru@exa.cs.umn.edu (Rama Mavuduru)
Subject: Re: Need graphics library for hardcopy support
Organization: University of Minnesota
Date: Thu, 7 Jan 1993 03:05:39 GMT

In <mmcardle.930105190505@eng.auburn.edu> mmcardle@eng.auburn.edu (Mary McArdle) writes:

>I am searching for a graphics package or library that 
>will enable me to create output for both HP plotters and 
>postscript printers.

	PHIGS and GKS open a workstation for drawing. This workstation
	can be a display screen or a printer.

	If the workstation is a printer the drawing is written to a file
	in the CGM format. There are convertors available which create a
	postscript file using this CGM file.

Rama
From: dbrackman@desire.wright.edu
Newsgroups: comp.graphics
Subject: Re: Touch Screens
Date: 6 Jan 93 04:22:16 GMT
Organization: Wright State University

In article <1993Jan2.195959.21840@spang.Camosun.BC.CA>, morley@suncad.camosun.bc.ca (Mark Morley) writes:
> About a year ago I saw someone demonstrate a touch screen that simply
> fitted over a regular 14" VGA monitor.  It converted the "touches" into
> mouse signals.  In other words, once you have written software to work
> with a Microsoft mouse you don't have to change anything to make it work
> with this touch screen.  Did that make sense?  Anyway, I can't remember
> who made it or how much it cost, etc.  If anyone out there has any info on
> this or similar products, I'd be most interested in getting it.  Also, if
> you have ideas for other touch screens or alternatives I'd like to hear them.
> 
I was recently working on a project where a MicroTouch touch screen was
attached to the front of a PC's monitor.  Unfortunately, I don't have
MicroTouch's phone number or address at hand.

I can tell you, however, that the touch screen connected to the computer
via a serial port, or via a card from MicroTouch that emulates a serial
port.  It comes with a mouse-emulator driver, a driver for using it with
Microsoft Windows, and documentation for writing your own low-level driver.
Also, I remember that the touch screens are relatively durable, as we
were exposing them to an industrial environment.

This isn't much, but hope it helps.

Dave
From: woo@basia.csd.sgi.com (Mason Woo)
Newsgroups: comp.graphics.opengl
Subject: OpenGL Documentation from Addison-Wesley
Date: 5 Jan 93 00:27:06 GMT
Reply-To: woo@basia.csd.sgi.com (Mason Woo)
Organization: Silicon Graphics Inc.

>Just one question, actually:  could you give us (me!) the exact title,
>order of the authors, and ISBN number if you have it?  Thanks!
>
>Eric Haines

Here's the requested information about both books:

OpenGL Reference Manual:
The Official Reference Document for OpenGL, Release 1
388 pages, plus a B&W pull out poster
Author:  OpenGL Architecture Review Board
ISBN 0-201-63276-4
"The Blue Book"

OpenGL Programming Guide:
The Official Guide to Learning OpenGL, Release 1
about 650 pages
Authors:  Jackie Neider, Tom Davis, and Mason Woo
ISBN 0-201-63274-8
"The Red Book"

These books are so outstanding, they've been accepted
by the Library of Congress.  :-)

Mason Woo, "Graphics Standards 'R Us" 	(415) 390-3314 
Graphics Technology Licensing (Product Marketing)
Silicon Graphics, Inc.	Internet: woo@SGI.COM 	
If you dub all the Amy Fisher movies into Japanese, you could
use your remote control to make a Long Island version of "Rashomon."
Newsgroups: comp.graphics.opengl
From: algebras@brolga.cc.uq.oz.au (murray bent)
Subject: Windows port of GL ?
Summary: GL ported ?
Keywords: Microsoft Windows 
Organization: Prentice Centre, University of Queensland
Date: Thu, 7 Jan 1993 00:39:44 GMT

    Can anyone recommend a port of GL for Microsoft Windows, please.
Apologies if this has been answered already, and I'd really appreciate an
e-mail reply on this,
   Cheers,
               MJ

Xref: sparky comp.graphics.opengl:233 comp.sys.sgi.graphics:87 comp.graphics:13356
From: woo@basia.csd.sgi.com (Mason Woo)
Newsgroups: comp.graphics.opengl,comp.sys.sgi.graphics,sgi.engr.opengl.arb,comp.graphics
Subject: OpenGL Architectural Review Board Meeting 1/25/93 Boston
Date: 4 Jan 93 18:30:31 GMT
Organization: Silicon Graphics, Inc., Mountain View, CA

Announcement of a meeting of the OpenGL Architectural Review Board

The members of the OpenGL Architectural Review Board (DEC, IBM, Intel,
Microsoft, and SGI) are meeting in Boston in late January.  
Part of the meeting is an open forum with the public at large:
licensees, applications developers, or just anyone who has an
interest in the future evolution of the OpenGL graphics interface.
This meeting will be the precursor to the formation of the 
OpenGL Advisory Board.

The OpenGL open forum will take place from 1-4 PM on Monday, January
25th at the Swissotel Boston LaFayette Hotel.  

There is a special $89.00 per night rate if you make the reservation 
by 1/10/93 and indicate that you are attending the OpenGL open forum.  
The phone number of the hotel is 617-451-2600.  Also, please contact
me via e-mail or voice mail, so I can get an idea how many people
might be attending this session.  (P. S.  My phone number is changing
this week, so e-mail is your best bet, or call the main switchboard
at SGI, (415) 960-1980)

Of course, whether you attend or not, you are encouraged to continue to
use comp.graphics.opengl to communicate your recommendations for
the future of OpenGL.  

--
Mason Woo, "Graphics Standards 'R Us" 	(415) 390-3314 
Graphics Technology Licensing (Product Marketing)
Silicon Graphics, Inc.	Internet: woo@SGI.COM 	
Current Project:  To make the PBS TV movie of the Amy Fisher story
From: erich@eye.com (Eric Haines)
Newsgroups: comp.graphics.opengl
Subject: Software speed?
Date: Fri, 8 Jan 93 22:40:25 GMT
Summary: I am curious (yellow)


I would like to know how fast the provided code for the OpenGL API performs.
That is, if you get a level 2 commercial license, how fast is the software
only version of the X11 sample implementation for shaded polygons?  I'm
interested in figures on any machine - GPC type figures are fine, or any other
3D illuminated polygon benchmark you guys at SGI might have (Bill Glazier, are
you still out there?  You seem to be in the know).

I'm also interested in how this compares to SGI hardware speeds, i.e. how
much does various dedicated graphics hardware buy you vs. just using the raw
compute power of the machine and a software only render?  100x?  10x?  1.5x?
Does anyone else out there have any feel for this?

Eric
Newsgroups: comp.graphics.opengl
From: spider@hercules.kgn.ibm.com (Gregory Scallan)
Subject: Re: OpenGL Documentation from Addison-Wesley (status report)
Date: Mon, 04 Jan 93 21:53:59 GMT
Reply-To: spider@hercules.kgn.ibm.com (Gregory Scallan)
Organization: IBM Kingston NY

Could someone post or send me the information on how to order this from
Addison-Wesley (phone number would be perfect).  My email id is
spider@vnet.ibm.com

Thanks,
Greg

 ____________________________________________________________
 Gregory J. Scallan                       |  IBMnet:     GSCALLAN@KGNVMY
 Graphics Systems Technical Center, AWSD  |  Internet:   spider@vnet.ibm.com
 (914)385-5054  (T/L 695)                 |  Sneakernet: 203-2-2-2, Kingston
From: kipp@warp.asd.sgi.com (Kipp Hickman)
Newsgroups: comp.graphics.opengl
Subject: Re: Software speed?
Date: 11 Jan 1993 18:05:08 GMT
Organization: Silicon Graphics, Inc.  Mountain View, CA
NNTP-Posting-Host: warp.asd.sgi.com


The software implemenation provided to Level 2 licensees is called the
"SampleGL".  It has a short history, and for various reasons, is not
anywhere near fast enough to ship as a product after a "trivial" port.

The primary reason is that to make it portable it layers its rendering
on top of the X servers DDX layer.  This makes it pretty darn slow.
What the purchaser of the license is supposed to do is to immediately
throw out the DDX layer code, and replace it with machine specific code.
Just doing this will get the implementation a x10 or more speed up.

After that, it is a matter of leveraging your graphics adapter and CPU
to achieve the best performance in the time you are willing to spend
on it.

For example, we have spent about 4ish months (two engineers full time)
tuning the "SampleGL" for the Indigo starter product.  Right now it is
running header over heels faster than the vanilla DDX implementation.

I refuse to give you exact multiples or specific numbers, because they
don't ever translate.

Hope this helps!

					kipp hickman
					silicon graphics inc.
From: akin@tuolumne.asd.sgi.com (Allen Akin)
Newsgroups: comp.graphics.opengl
Subject: Re: Software speed?
Date: 11 Jan 1993 19:52:07 GMT
Organization: Silicon Graphics, Inc.  Mountain View, CA
NNTP-Posting-Host: tuolumne.asd.sgi.com


In article <1993Jan8.174025.21761@eye.com>, erich@eye.com writes:
> Lines: 13
> 
> I would like to know how fast the provided code for the OpenGL API performs.
> That is, if you get a level 2 commercial license, how fast is the software
> only version of the X11 sample implementation for shaded polygons?  I'm
> interested in figures on any machine - GPC type figures are fine, or any other
> 3D illuminated polygon benchmark you guys at SGI might have (Bill Glazier, are
> you still out there?  You seem to be in the know).

As Kipp said... The sample OpenGL implementation is intended to be
functionally complete and readily customizable, but it isn't optimized
to the extent that you could ship it as a product off-the-shelf.
Therefore measuring its performance isn't very meaningful -- you'd be
getting some measurement of the schedule pressures faced by its
implementors :-), but not any measurement of the intrisic capabilities
of the API or the software or the hardware on which it's run.

FYI, the sample OpenGL implementation is being used as the basis for
SGI's product implementations, so we're pretty confident that it
doesn't present any unreasonable limits to optimization.  Some of the
changes we make for our products will be fed back into the sample
implementation, so it will continue to improve.  Perhaps the other
licensees will contribute optimizations, too.

Sorry we have to be this cautious.  People do use performance numbers
out of context, so it pays to avoid misunderstandings.  Could you give
us a clue as to what questions you're trying to answer?  Perhaps that
would help us provide more useful information.


> I'm also interested in how this compares to SGI hardware speeds, i.e. how
> much does various dedicated graphics hardware buy you vs. just using the raw
> compute power of the machine and a software only render?  100x?  10x?  1.5x?
> Does anyone else out there have any feel for this?

Could you give me a little more context?

As I understand your question, the answer depends pretty drastically on
which model of graphics hardware and which graphics primitive (among
other things) you'd like to use for comparison.  I've seen cases in the
past where adding graphics hardware yielded performance improvements of
greater than 1000X (textured polygons) and performance degradation of
0.5X (image transfer).

The general question of using dedicated hardware vs. general-purpose
hardware, and the resulting cost tradeoffs for particular markets, is a
very interesting one.

Allen
From: grant@Manticore.COM (Grant J. Munsey)
Newsgroups: comp.graphics
Subject: Targa 16 software for DOS/WINDOWS?
Date: 10 Jan 93 22:15:36 GMT
Reply-To: grant@Manticore.COM

I have an old Targa 16 that I would like to use under Windows and or Dos.
Anybody have pointers to PD software for this combination? Thanks,
---
Grant Munsey, Mainticore, Inc. (408)252-1135
grant@Manticore.COM,  uunet!ub-gate!gouche!grant   NeXTMail ok.
From: ogo@artin.donetsk.ua (Dagajev Sergey N.)
Newsgroups: comp.graphics
Subject: Help! Tpansform palette from 24-bit to 256 (or less) colors?
Date: Wed, 06 Jan 93 10:12:47 +0200
Distribution: world
Organization: Artificial Intelligence Problems Institute
Reply-To: ogo@artin.donetsk.ua

  When I decompress JPEG file, I get picture with 24-bit palette.
How to transform this picture to 256 (or less) colors for time
less 1 minute?
P.S. Where I may find C-code, if it is possible?

Thanks.

ogo@artin.donetsk.ua

Xref: sparky comp.graphics:13468 alt.graphics.pixutils:2838
From: klui@corp.hp.com (Kenneth K.F. Lui)
Newsgroups: comp.graphics,alt.graphics.pixutils
Subject: Re: Your one stop GRAPHICS shop!
Date: 6 Jan 1993 19:55:22 GMT
Organization: Hewlett-Packard Company
NNTP-Posting-Host: klui.corp.hp.com

In article <1993Jan6.150118.24767@a.cs.okstate.edu> jmccorm@a.cs.okstate.edu (MCCORMICK JOSHUA C) writes:
>From article <38346@cbmvax.commodore.com>, by chrisg@cbmvax.commodore.com (Chris Green):
>> 	The quality loss from reducing your 24 bit data to only 256 colors
>> (GIF) is much higher than the loss from a jpeg compression.
>On standard 8 bit data files, however, the situation is reversed.

This is an added incentive to stay away from 8-bit images
altogether.  I loathe GIF files now that good-quality JPEG files
are more-readily available and I'm able to appreciate them on my
24-bit display at home.  What's bad is some JPEGs are converted
from GIF, which is not what JPEG files were intended for.  Having
a JPEG file made from an original 24-bit scanned tiff file is as
good as having the tiff itself, at a fraction of the size.

>                                                                  In either
>case, you need not waste time with a GIFLITE picture converting it into a
>viewable format.
>
That's because most people out in netland have an 8-bit display.
No conversion (quantizing) of 24-bit down to 8-bit is necessary
if full-color display hardware is available.  People won't have
8-bit video forever, and I see the trend going towards 24-/32-bit
video in the near future.  The trend is JPEG; GIF will die soon
enough.  Why aren't there any more 16-color EGA dithered GIFs
anymore??



Ken
-- 
Kenneth K.F. Lui, klui@corp.hp.com                  3000 Hanover Street MS20BJ
Corporate Administrative Information Systems        Palo Alto, CA  94304   USA
Core Application Technologies                1(415)857-3230 Fax 1(415)852-8026
Newsgroups: comp.graphics
From: mal2n@fulton.seas.Virginia.EDU (Matt Leonard)
Subject: Capture the entire screen of a Sun and NeXT station ? HELP!
Organization: University of Virginia
Date: Fri, 8 Jan 1993 18:38:39 GMT

How do you capture the entire screen of a Sun and a NeXT station into
a GIF or other popular DOS image format?  I am looking for the equivalent
of a 'print screen' in a file format compatible with DOS.
If any non-standard software is required, please list the site address so
I can ftp it.  Remember that I am looking for the entire screen resolution.
	
	NeXT  1024x832 pixels
	Sun   1152x900
	      1280x1024
	      1600x1280

Thank you in advance!  I need a response by this Sunday. (please)

Matt Leonard
From: af774@cleveland.Freenet.Edu (Chad Cipiti)
Newsgroups: comp.graphics
Subject: SpeedStar 24X Fractint drivers
Date: 6 Jan 1993 22:56:30 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


Do drivers for Fractint exist so I can use my SpeedStar 24X to
 it's fullest potential?  If so, where can I find them - FTP site
 or otherwise.

Thanks!

Chad


-- 
    ....                  SHARK ENCOUNTER
~ ~  :::::. ~~~  ~   ~      new in 1993             Chad Cipiti
 ~~ ::::::::. ~   ~~     Sea World of Ohio   af774@cleveland.freenet.edu
~~.:::::::::::.~ ~~~ ~    "Make Contact."
Newsgroups: comp.graphics
From: waynec@cgrg.ohio-state.edu (Wayne E. Carlson)
Subject: apologies
Organization: OSU, Advanced Computing Center for Arts & Design
Date: Mon, 4 Jan 1993 18:49:14 GMT


Please excuse the improper posting of the above job related message.
It was supposed to go to misc.jobs.offered.
Newsgroups: comp.graphics
From: orourke@sophia.smith.edu (Joseph O'Rourke)
Subject: Re: Polygon-polygon intersection
Organization: Smith College, Northampton, MA, US
Date: Tue, 5 Jan 1993 01:56:48 GMT

In article <1iadoeINN2hj@life.ai.mit.edu> sundar@ai.mit.edu writes:
>|> In article <7418@tivoli.UUCP> twb@tivoli.com (Tom Bereiter) writes:

>|> >I'm looking for an efficient test for whether two 2D polygons intersect.

>This seems to come up repeatedly, and it DOES have a simple answer,
>Polygon intersection can be reduced to point in polygon in linear time. 
>Basically convolve A & B, [etc.]

	This does come up repeatedly.  Last time it did I pointed out
that the Minkowski sum (convolution) can be computed in linear time
on for two *convex* polygons.  For two arbitrary simple polygons of
n vertices each, there are examples that require n^4 time!
From: sl9z5@cc.usu.edu
Newsgroups: comp.graphics
Subject: Urgent : Needed ftp sites info.
Date: 7 Jan 93 16:42:22 MDT
Organization: Utah State University

Hai,
	I am desperately in the need out for 3D objects.
	Can someone give me list of ftp sites where I can find
	some 3D objects.
Thanks in advance
Murali Seetharaman,
Utah State Uty.,
Logan.
sl9z5@cc.usu.edu
p.s: You could mail them to me directly.
From: azhao@cs.arizona.edu (Qiang Alex Zhao)
Newsgroups: comp.graphics
Subject: Generic Tetris V2.0.0
Date: 11 Jan 93 05:34:35 GMT


A new release of my "Generic Tetris" is out. This V2.0.0 is a complete
re-write based on V1.8.1. The layout has changed and people can now play
with "show next" mode and other preferences.

I've submitted the source to "comp.sources.games", and you can find it on:

    HOST: export.lcs.mit.edu
    FILE: /contrib/tetris.2.0.0.tar.Z

The following is some info in case you are not familiar with this program...


	GENERIC TETRIS
	==============	Yet Another Tetris Game on X, V2.0.0


WHY ANOTHER?

    Because this one is simple, easy to build, and portable -- actually
    the blocks are bigger, more comfortable for your eyes. It only uses
    Xlib -- no "toolkit" kind of thing. People have tested it on the
    following platforms:

	DEC 5000		Ultrix 4.2A	X11R4
	Iris 4D			IRIX 4.0.1	Motif
	Sun4, SPARCstation	SunOS 4.1.1	X11R4, X11R5
	Sequent S81		DYNIX 3.2.0	X11R5

...

ANYTHING SPECIAL IN PLAYING?

    Use 'j' to move left; 'l' to move right; 'k' to rotate. Left-handed
    people may want to use 's', 'd', 'f' respectively. Use the space
    bar to drop a block quickly.

    Use CTRL-L key combination to redraw -- in case the program messes
    somthing up.

    As usual, '+' and '-' will speed up or lower down the speed. Note
    that you don't need to press the SHIFT key -- '=' and '_' also
    work. The 'b' key can be used to toggle "beep" and 'n' toggles
    "show next".

    If you press 'p', the game will be paused, and the window will be
    iconified -- just in case your boss suddenly appears at your door.
    ;o) When the tetris window loses its focus, it also goes to
    "paused" mode except it doesn't iconify itself.

    Refer to the man page for detailed command line options.

--
= Qiang Alex Zhao                 ___       .             ______
  Computer Science Dept          /   )     /|   )          __//  )
  University of Arizona         /   /     /_|  / _        //    /_  _. ._
  azhao@cs.arizona.edu         (__)(_o   /  (_(_(-'_)(   ((____/ (_(_(_(_)
Newsgroups: comp.graphics
From: bwong@csulb.edu (Bradley Wong)
Subject: RFI: auto creating raster file from segments
Organization: Cal State Long Beach
Distribution: usa
Date: Mon, 11 Jan 1993 19:11:22 GMT

I have a graphical problem and am looking for a solution.

Brief statement of problem:

I need to take the output of a user display prgram running
under X and make it available for display in an propriatary
X-based presentation program (kind of like a Freeland for X).

This would be easy if I could use xwd to dump the screen,
convert the dump to GIF, crop the gif file, an import the
GIF file into the presentation system (as a "slide").

The problem is this problem has to be automatic: It has to
happen in the backgroup. The user program may not even be
up and running at the time and the specific screen is 
nested within another program.

The original display is made of colored icons, fonts and cells and
is driven from d fixed-length, but variable data, text file.

Potential solutions?

I have access to the same data file information. 

One way I guess
would be to create a composite graphical file using a programable
vector language like postscript based on the variable data, and
import the result as an EPS file or convert to a raster file.

Another would be to have a bunch of raster "segments" or icons that could
somehow be concatinated to form a single composit raster file
(GIF, TIF, etc.). But, this has to be done programatically.

Any suggestions or pointers (programs on the net, code fragments, etc.)? 





Newsgroups: comp.graphics
From: mavuduru@peca.cs.umn.edu (Rama Mavuduru)
Subject: Re: looking for reference on plotting technical data
Organization: University of Minnesota
Date: Thu, 7 Jan 1993 17:29:17 GMT

In <IBE1109.93Jan6042308@etbsun1.draper.com> ibe1109@draper.com (Ira Ekhaus) writes:

>I'm looking for references to books, articles and examples of all the
>ways that technical data is displayed, especially stylistic issues and
>methods to measure the effectivenss of various formats to convey
>numerical data.

	See the following two books by Edward Tufte:

	1. Envisioning Information, Graphics Press, 1990.
	2. The Graphical Display of Qualitative Information, Graphics Press,
	      1983.

Rama
Newsgroups: comp.graphics
From: mshiels@TMSoftware.Ca (Michael A. Shiels)
Subject: Barcode information? How to idenitfy a barcode in a bitmap?
Organization: MaS Network Software and Consulting
Date: Mon, 11 Jan 1993 01:49:41 GMT

Where is the best place to get information on barcodes? 

How hard/easy is it to recognise a barcode and decode it from a bitmap?

MaS
-- 
---

Michael A. Shiels                           | mshiels@masnet.uucp
MaS Network Software and Consulting         | mshiels@tmsoftware.ca
From: smmyers@foghorn.srv.pacbell.com (Sean Myers)
Newsgroups: comp.graphics
Subject: JPEG --> GIF Converter
Keywords: gif, jpeg
Date: 6 Jan 93 19:03:50 GMT
Organization: Pacific Bell OSSEM


Does anyone know of an FTP site that would carry a JPEG to GIF converter to be used on an RS6K?

Thanks,

       _____  _____   ___   __  _       __  __ _____ ____  _____  _____ 
      |   __||   __| /   \ |  \| |     |  \/  |\ | /|  __||     \|   __|
      |__   ||   __||  ^  ||     |     |      | | | |  __||  ^  /|__   |
      |_____||_____||__|__||_|\__|     |_|\/|_| |_| |____||__|__\|_____|
  -+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+-
  + Sean M. Myers (smmyers@pbhyg.PacBell.COM)|                              +
  = Systems Analyst                          |    THIS SPACE FOR RENT...    =
  + Operator Services                        |                              +
  = Software Engineering and Maintenance     |                              =
  + Pacific Bell (SRV complex) CA. USA       |                              +
  -+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+--+=+-