ÿþID&&&&NewsGroup&&&&ArticleText@@@@37261.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!dtix.dt.navy.mil!oasys!lipman From: lipman@oasys.dt.navy.mil (Robert Lipman) Subject: CALL FOR PRESENTATIONS: Navy SciViz/VR Seminar Message-ID: <32850@oasys.dt.navy.mil> Date: 19 Mar 93 20:10:23 GMT Article-I.D.: oasys.32850 Expires: 30 Apr 93 04:00:00 GMT Reply-To: lipman@oasys.dt.navy.mil (Robert Lipman) Followup-To: comp.graphics Distribution: usa Organization: Carderock Division, NSWC, Bethesda, MD Lines: 65 CALL FOR PRESENTATIONS NAVY SCIENTIFIC VISUALIZATION AND VIRTUAL REALITY SEMINAR Tuesday, June 22, 1993 Carderock Division, Naval Surface Warfare Center (formerly the David Taylor Research Center) Bethesda, Maryland SPONSOR: NESS (Navy Engineering Software System) is sponsoring a one-day Navy Scientific Visualization and Virtual Reality Seminar. The purpose of the seminar is to present and exchange information for Navy-related scientific visualization and virtual reality programs, research, developments, and applications. PRESENTATIONS: Presentations are solicited on all aspects of Navy-related scientific visualization and virtual reality. All current work, works-in-progress, and proposed work by Navy organizations will be considered. Four types of presentations are available. 1. Regular presentation: 20-30 minutes in length 2. Short presentation: 10 minutes in length 3. Video presentation: a stand-alone videotape (author need not attend the seminar) 4. Scientific visualization or virtual reality demonstration (BYOH) Accepted presentations will not be published in any proceedings, however, viewgraphs and other materials will be reproduced for seminar attendees. ABSTRACTS: Authors should submit a one page abstract and/or videotape to: Robert Lipman Naval Surface Warfare Center, Carderock Division Code 2042 Bethesda, Maryland 20084-5000 VOICE (301) 227-3618; FAX (301) 227-5753 E-MAIL lipman@oasys.dt.navy.mil Authors should include the type of presentation, their affiliations, addresses, telephone and FAX numbers, and addresses. Multi-author papers should designate one point of contact. DEADLINES: The abstact submission deadline is April 30, 1993. Notification of acceptance will be sent by May 14, 1993. Materials for reproduction must be received by June 1, 1993. For further information, contact Robert Lipman at the above address. PLEASE DISTRIBUTE AS WIDELY AS POSSIBLE, THANKS. Robert Lipman | Internet: lipman@oasys.dt.navy.mil David Taylor Model Basin - CDNSWC | or: lip@ocean.dt.navy.mil Computational Signatures and | Voicenet: (301) 227-3618 Structures Group, Code 2042 | Factsnet: (301) 227-5753 Bethesda, Maryland 20084-5000 | Phishnet: stockings@long.legs The sixth sick shiek's sixth sheep's sick. @@@@37913.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!wupost!usc!newshub.sdsu.edu!ucssun1.sdsu.edu.sdsu.edu!weston From: weston@ucssun1.sdsu.edu (weston t) Subject: graphical representation of vector-valued functions Date: 5 Apr 1993 20:22:28 GMT Organization: SDSU Computing Services Lines: 13 Message-ID: <1pq4e4$afc@pandora.sdsu.edu> NNTP-Posting-Host: ucssun1.sdsu.edu gnuplot, etc. make it easy to plot real valued functions of 2 variables but I want to plot functions whose values are 2-vectors. I have been doing this by plotting arrays of arrows (complete with arrowheads) but before going further, I thought I would ask whether someone has already done the work. Any pointers?? thanx in advance Tom Weston | USENET: weston@ucssun1.sdsu.edu Department of Philosophy | (619) 594-6218 (office) San Diego State Univ. | (619) 575-7477 (home) San Diego, CA 92182-0303 | @@@@37914.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!caen!usenet.cis.ufl.edu!rap From: rap@coconut.cis.ufl.edu (Ryan Porter) Subject: Re: DMORPH Message-ID: <1pqlhnINN8k1@snoopy.cis.ufl.edu> Date: 6 Apr 93 01:14:31 GMT Article-I.D.: snoopy.1pqlhnINN8k1 References: <1993Apr3.183303.6442@usl.edu> Organization: Univ. of Florida CIS Dept. Lines: 34 NNTP-Posting-Host: coconut.cis.ufl.edu In article <1993Apr3.183303.6442@usl.edu> jna8182@ucs.usl.edu (Armstrong Jay N) writes: >Can someone please tell me where I can ftp DTA or DMORPH? DMorf (Dave's Morph, I think is what it means) and DTax (Dave's TGA Assembler) are available in the MSDOS_UPLOADS directory on the wuarchive. They are arjed and bundled with their respective xmemory versions, dmorfx.exe and dtax.exe, you can also find a version of aaplay.exe there, with which you can view files you create with dta.exe or dtax.exe. I downloaded the whole bunch last week and have been morphing away the afternoons since. The programmes are all a bit buggy and definitely not-ready-to-spread-to-the-masses, but they are very well written. The interface is frustrating at first, but it gets easy once you figure out the tricks. I have noticed that dmorfx will crash horribly if you try to morph without using the splines option. Not sure why, since I don't have the source. I think it was written for TP 6.0. If anyone else comes up with any other hints on getting the thing to work right, tell me; it took me several hours the first time just to figure out that if I just used the durned splines then it would work... >JNA >jna8182@usl.edu -Ryan rap@cis.ufl.edu @@@@37915.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!asuvax!cs.utexas.edu!sdd.hp.com!caen!uvaarpa!murdoch!onyx.cs.Virginia.EDU!kph2q From: kph2q@onyx.cs.Virginia.EDU (Kenneth Hinckley) Subject: VOICE INPUT -- vendor information needed Message-ID: <C4yxLJ.MzB@murdoch.acc.Virginia.EDU> Sender: usenet@murdoch.acc.Virginia.EDU Reply-To: kph2q@onyx.cs.Virginia.EDU (Kenneth Hinckley) Organization: University of Virginia Date: Sun, 4 Apr 1993 16:53:43 GMT Lines: 27 Hello, I am looking to add voice input capability to a user interface I am developing on an HP730 (UNIX) workstation. I would greatly appreciate information anyone would care to offer about voice input systems that are easily accessible from the UNIX environment. The names or adresses of applicable vendors, as well as any experiences you have had with specific systems, would be very helpful. Please respond via email; I will post a summary if there is sufficient interest. Thanks, Ken P.S. I have found several impressive systems for IBM PC's, but I would like to avoid the hassle of purchasing and maintaining a separate PC if at all possible. ------------------------------------------------------------------------------- Ken Hinckley (kph2q@virginia.edu) University of Virginia Neurosurgical Visualization Laboratory ------------------------------------------------------------------------------- @@@@37916.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!asuvax!cs.utexas.edu!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!uw-beaver!cs.ubc.ca!unixg.ubc.ca!kakwa.ucs.ualberta.ca!ersys!joth From: joth@ersys.edmonton.ab.ca (Joe Tham) Subject: Where can I find SIPP? Message-ID: <yFXJ2B2w165w@ersys.edmonton.ab.ca> Date: Mon, 05 Apr 93 14:58:21 MDT Organization: Edmonton Remote Systems #2, Edmonton, AB, Canada Lines: 11 I recently got a file describing a library of rendering routines called SIPP (SImple Polygon Processor). Could anyone tell me where I can FTP the source code and which is the newest version around? Also, I've never used Renderman so I was wondering if Renderman is like SIPP? ie. a library of rendering routines which one uses to make a program that creates the image... Thanks, Joe Tham -- Joe Tham joth@ersys.edmonton.ab.ca @@@@37917.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!nntp-server.caltech.edu!andrey From: andrey@cco.caltech.edu (Andre T. Yew) Subject: Re: 16 million vs 65 thousand colors Date: 3 Apr 1993 19:51:06 GMT Organization: California Institute of Technology, Pasadena Lines: 28 Message-ID: <1pkpraINNck9@gap.caltech.edu> References: <1993Mar26.210323.27802@midway.uchicago.edu> <dotzlaw-020493084300@murphy.biochem.umanitoba.ca> <d9hh.733845825@dtek.chalmers.se> NNTP-Posting-Host: punisher.caltech.edu d9hh@dtek.chalmers.se (Henrik Harmsen) writes: >1-4 bits per R/G/B gives horrible machbanding visible in almost any picture. >5 bits per R/G/B (32768, 65000 colors) gives visible machbanding >color-gradient picture has _almost_ no machbanding. This color-resolution is >see some small machbanding on the smooth color-gradient picture, but all in all, >There _ARE_ situiations where you get visible mach-banding even in >a 24 bit card. If >you create a very smooth color gradient of dark-green-white-yellow >or something and turn >up the contrast on the monitor, you will probably see some mach-banding. While I don't mean to damn Henrik's attempt to be helpful here, he's using a common misconception that should be corrected. Mach banding will occur for any image. It is not the color quantization you see when you don't have enough bits. It is the human eye's response to transitions or edges between intensities. The result is that colors near the transistion look brighter on the brighter side and darker on the darker side. --Andre -- Andre Yew andrey@cco.caltech.edu (131.215.139.2) @@@@37918.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!uwm.edu!daffy!uwvax!picard.cs.wisc.edu!oehler From: oehler@picard.cs.wisc.edu (Eric Oehler) Subject: Translating TTTDDD to DXF or Swiv3D. Message-ID: <1993Apr6.020751.13389@cs.wisc.edu> Date: 6 Apr 93 02:07:51 GMT Article-I.D.: cs.1993Apr6.020751.13389 Sender: news@cs.wisc.edu (The News) Distribution: usa Organization: University of Wisconsin, Madison -- Computer Sciences Dept. Lines: 8 I am a Mac-user when it comes to graphics (that's what I own software and hardware for) and I've recently come across a large number of TTTDDD format modeling databases. Is there any software, mac or unix, for translating those to something I could use, like DXF? Please reply via email. Thanx. Eric Oehler oehler@picard.cs.wisc.edu @@@@37919.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!nigel.msen.com!sdd.hp.com!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!decwrl!netcomsv!apple!phughes From: phughes@Apple.COM (Peter Hughes) Subject: Searching for Public Domain Brain & Neuron Databases Message-ID: <80425@apple.apple.COM> Date: 5 Apr 93 23:23:22 GMT Followup-To: sci.med Organization: The Humbio Project Lines: 21 I am looking for publically accessible sources of data depicting brain and neuron functions. Especially interesting would be volumetric data from brain scans, electromicographs, and so forth. Please email me and let me know if you know of such. -------------------------------------------------------- The HumBio Project is a CD-ROM-based curriculum tool for sixth-, seventh-, and eigth-graders, studying the function of the human brain and the effects of neurotransmitters, alcohol, and drugs. The will be a special focus in depicting the effects of neurotransmitters on behavior. Volotta Interactive Video is producing this project for Stanford Univers ity. We are currently in a pre-production phase and we are looking for data sets and visualizations depicting brain function on the whole brain, neuron and molecular levels. We intend to use state-of-the-art visualization tools to render instructive visualizations from two-, three-, and four-dimensional data sets as well as using already-completed visualizations to their best effect. @@@@37920.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!usenet.ufl.edu!usenet.cis.ufl.edu!caen!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!decwrl!netcomsv!apple!phughes From: phughes@Apple.COM (Peter Hughes) Subject: The HumBio Project-- call for data and visualizations Message-ID: <80426@apple.apple.COM> Date: 5 Apr 93 23:25:41 GMT Followup-To: sci.med Organization: Apple Computer Inc, Cupertino, CA Lines: 28 The HumBio Project: Call for Data and Visualizations The HumBio Project is a CD-ROM-based curriculum tool for sixth-, seventh-, and eigth-graders, studying the function of the human brain and the effects of neurotransmitters, alcohol, and drugs. The will be a special focus in depicting the effects of neurotransmitters on behavior. Volotta Interactive Video is producing this project for Stanford University. We are currently in a pre-production phase and we are looking for data sets and visualizations depicting brain function on the whole brain, neuron and molecular levels. We intend to use state-of-the-art visualization tools to render instructive visualizations from two-, three-, and four-dimensional data sets as well as using already-completed visualizations to their best effect. If you're interested in sharing your data for the purpose of education and supporting the introductions of CD-ROM and scientific visualization technologies into our schools, please e-mail phughes@igc.org. Include your name, organization, and type and format of data you might be willing to provide. We are eager to begin production in the next few months and will be excited to hear from you. Sincerely, Peter Hughes The HumBio Project (The HumBio Project is not in any way affiliated with Apple Computer or IGC.) @@@@37921.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!swrinde!zaphod.mps.ohio-state.edu!usc!elroy.jpl.nasa.gov!ames!olivea!uunet!mcsun!fuug!kiae!relcom!newsserv From: alex@talus.msk.su (Alex Kolesov) Subject: Help on RenderMan language wanted! Message-ID: <9304051103.AA01274@talus.msk.su> Date: 5 Apr 93 11:00:50 GMT Sender: news-service@newcom.kiae.su Reply-To: alex@talus.msk.su Organization: unknown Lines: 17 Hello everybody ! If you are using PIXAR'S RenderMan 3D scene description language for creating 3D worlds, please, help me. I'm using RenderMan library on my NeXT but there is no documentation about NeXTSTEP version of RenderMan available. I can create very complicated scenes and render them using surface shaders, but I can not bring them to life by applying shadows and reflections. As far as I understand I have to define environmental and shadows maps to produce reflections and shadows, but I do not know how to use them. Any advises or simple RIB or C examples will be appreciated. Thanks in advance... --- Alex Kolesov Moscow, Russia. Talus Imaging & Communications Corporation e-mail: <alex@talus.msk.su> (NeXT mail accepted) . @@@@37922.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!swrinde!cs.utexas.edu!csc.ti.com!tilde.csc.ti.com!fstop.csc.ti.com!pocomoco!rowlands From: rowlands@pocomoco.NoSubdomain.NoDomain (Jon Rowlands) Subject: Re: More gray levels out of the screen Message-ID: <C51C4r.BtG@csc.ti.com> Sender: rowlands@pocomoco (Jon Rowlands) Nntp-Posting-Host: pocomoco.hc.ti.com Reply-To: rowlands@hc.ti.com (Jon Rowlands) Organization: Texas Instruments, SPDC, DSP Technology Branch, Dallas References: <1pmfs4$3e7@cc.tut.fi> <1993Apr5.040819.14943@kpc.com> <1pp991$t63@cc.tut.fi> Date: Tue, 6 Apr 1993 00:02:50 GMT Lines: 51 In article <1pp991$t63@cc.tut.fi>, jk87377@lehtori.cc.tut.fi (Kouhia Juhana) writes: >In article <1993Apr5.040819.14943@kpc.com> hollasch@kpc.com (Steve >Hollasch) writes: >> >> I think you're proposal would work to get an extra one, maybe two extra >>bits of color resolution. However, if you had a display that chould do only >>zero or full intensity for each primary, I don't think you'd get great >>equivalent 24-bit photographs. > >I have not suggested to do so; I wrote about problems, and the problem >were clearly visible with 7 bit b&w images; not to mention 24 bit images. [ description of experiment deleted ] >If the 1 bit images are viewed quickly and in sync with screen, >then 100 intensities could be better than we have -- I dunno. [ more deleted ] >In any case, getting black color with slow machines is problem. >I could try it on our 8 bit screens but I don't know how to >render pixels with X in constant time. I recall our double buffer >has other image color and one b&w -- that doesn't help either. >Maybe I should dump photos to screen with low level code; how? A few years ago a friend and I took some 256 grey-level photos from a 1 bit Mac Plus screen using this method. Displaying all 256 levels synchronized to the 60Hz display took about 10 seconds. After experimenting with different aperture settings and screen brightnesses we found a range that worked well, giving respectable contrast. The quality of the images was pretty good. There were no visible contrast bands. To minimize the exposure time the display program built 255 different 1 bit frames. The first contained a dot only for pixels that had value 255, the second only for pixels that had value 254, etc. These frames were stored using a sparse data structure that was very fast to 'or' onto the screen in sequence. Creating these frames sometimes took 5-10 minutes on that old Mac, but the camera shutter was closed during that time anyway. And yes, we wrote directly to the screen memory. Mea culpa. Our biggest problem was that small images were displayed in the top left corner of the screen instead of the center. It took an extra week to have the film developed and printed, because the processors took the trouble to manually move the all images into the center of the print. Who'd have guessed? regards, Jon Rowlands @@@@37923.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!willis1.cis.uab.edu!sloan From: sloan@cis.uab.edu (Kenneth Sloan) Subject: Re: More gray levels out of the screen Message-ID: <1993Apr6.011605.909@cis.uab.edu> Organization: CIS, University of Alabama at Birmingham References: <1993Apr5.040819.14943@kpc.com> <1pp991$t63@cc.tut.fi> <C51C4r.BtG@csc.ti.com> Date: Tue, 6 Apr 1993 01:16:05 GMT Lines: 22 In article <C51C4r.BtG@csc.ti.com> rowlands@hc.ti.com (Jon Rowlands) writes: > >A few years ago a friend and I took some 256 grey-level photos from >a 1 bit Mac Plus screen using this method. Displaying all 256 levels >synchronized to the 60Hz display took about 10 seconds. Why didn't you create 8 grey-level images, and display them for 1,2,4,8,16,32,64,128... time slices? This requires the same total exposure time, and the same precision in timing, but drastically reduces the image-preparation time, no? -- Kenneth Sloan Computer and Information Sciences sloan@cis.uab.edu University of Alabama at Birmingham (205) 934-2213 115A Campbell Hall, UAB Station (205) 934-5473 FAX Birmingham, AL 35294-1170 @@@@37924.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!swrinde!sdd.hp.com!cs.utexas.edu!uunet!decwrl!netcomsv!optimla!lex From: lex@optimla.aimla.com (Lex van Sonderen) Subject: Re: Rumours about 3DO ??? Message-ID: <C51Eyz.4Ix@optimla.aimla.com> Sender: news@optimla.aimla.com Nntp-Posting-Host: emerald Organization: Philips Interactive Media of America References: <1993Mar31.074502.3590@aragorn.unibe.ch> <h1p4s4g@zola.esd.sgi.com> Date: Tue, 6 Apr 1993 01:04:10 GMT Lines: 20 In article <h1p4s4g@zola.esd.sgi.com> erik@westworld.esd.sgi.com (Erik Fortune) writes: >> better than CDI >*Much* better than CDI. Of course, I do not agree. It does have more horsepower. Horsepower is not the only measurement for 'better'. It does not have full motion, full screen video yet. Does it have CD-ROM XA? >> starting in the 4 quarter of 1993 >The first 3DO "multiplayer" will be manufactured by panasonic and will be >available late this year. A number of other manufacturers are reported to >have 3DO compatible boxes in the works. Which other manufacturers? We shall see about the date. >All this information is third hand or so and worth what you paid for it:-). This is second hand, but it still hard to look to the future ;-). Lex van Sonderen lex@aimla.com Philips Interactive Media @@@@37925.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!newsserver.jvnc.net!newsserver.technet.sg!iti.gov.sg!teckjoo From: teckjoo@iti.gov.sg (Chua Teck Joo) Subject: Visuallib (3D graphics for Windows) Message-ID: <1993Apr6.022227.221@iti.gov.sg> Sender: news@iti.gov.sg (News Admin) Organization: Information Technology Institute, National Computer Board, Singapore. Date: Tue, 6 Apr 1993 02:22:27 GMT Lines: 17 I am currently looking for a 3D graphics library that runs on MS Windows 3.1. Are there any such libraries out there other than Visuallib? (It must run on VGA and should not require any other add-on graphics cards). For Visuallib, will it run with Metaware High C compiler v3.0? Any email contact for the author of Visuallib? Any help would be much appreciated. Thanks. -- * Chua, Teck Joo | Information Technology Institute * * Email: teckjoo@iti.gov.sg | 71 Science Park Drive * * Phone: (65) 772-0237 | Singapore (0511) * * Fax: (65) 779-1827 | * @@@@37926.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!emory!gatech!taco!garfield.catt.ncsu.edu!cst From: cst@garfield.catt.ncsu.edu (Caroline Tsang) Subject: Graphics Library Package Message-ID: <1993Apr6.051201.9535@ncsu.edu> Date: 6 Apr 93 05:12:01 GMT Article-I.D.: ncsu.1993Apr6.051201.9535 Sender: news@ncsu.edu (USENET News System) Organization: Computer and Technologies Theme Program, NCSU, Raleigh Lines: 15 Hi all, I am looking for a recommandation on a good royalty free graphics library package for C and C++ program. This is mainly use to write children games and education software. I heard someone mentioned Genus and also GFX ? Are they any good? Please pardon me if my question sounds a little strange, I am asking this question for a friend. Thanks in advance! Caroline Tsang <cst@garfield.catt.ncsu.edu> @@@@37927.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!decwrl!csus.edu!netcom.com!bprofane From: bprofane@netcom.com (Gert Niewahr) Subject: Re: Rumours about 3DO ??? Message-ID: <bprofaneC51wHz.HIo@netcom.com> Date: 6 Apr 93 07:22:46 GMT Article-I.D.: netcom.bprofaneC51wHz.HIo References: <1993Mar31.074502.3590@aragorn.unibe.ch> <h1p4s4g@zola.esd.sgi.com> <C51Eyz.4Ix@optimla.aimla.com> Organization: Netcom Online Communications Services (408-241-9760 login: guest) Lines: 39 In article <C51Eyz.4Ix@optimla.aimla.com> lex@optimla.aimla.com (Lex van Sonderen) writes: >In article <h1p4s4g@zola.esd.sgi.com> erik@westworld.esd.sgi.com (Erik Fortune) writes: >>> better than CDI >>*Much* better than CDI. >Of course, I do not agree. It does have more horsepower. Horsepower is not >the only measurement for 'better'. It does not have full motion, full screen >video yet. Does it have CD-ROM XA? > >>> starting in the 4 quarter of 1993 >>The first 3DO "multiplayer" will be manufactured by panasonic and will be >>available late this year. A number of other manufacturers are reported to >>have 3DO compatible boxes in the works. >Which other manufacturers? >We shall see about the date. A 3DO marketing rep. recently offered a Phillips marketing rep. a $100 bet that 3DO would have boxes on the market on schedule. The Phillips rep. declined the bet, probably because he knew that 3DO players are already in pre-production manufacturing runs, 6 months before the commercial release date. By the time of commercial release, there will be other manufacturers of 3DO players announced and possibly already tooling up production. Chip sets will be in full production. The number of software companies designing titles for the box will be over 300. How do I know this? I was at a bar down the road from 3DO headquarters last week. Some folks were bullshitting a little too loudly about company business. >>All this information is third hand or so and worth what you paid for it:-). >This is second hand, but it still hard to look to the future ;-). > >Lex van Sonderen >lex@aimla.com >Philips Interactive Media ^^^^^^^^^^^^^^^^^^^^^^^^^ What an impartial source! @@@@37928.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!swrinde!sdd.hp.com!ux1.cso.uiuc.edu!news.cso.uiuc.edu!eehp22!hl7204 From: hl7204@eehp22 (H L) Subject: Re: Graphics Library Package Date: Tue, 6 Apr 1993 07:05:17 GMT Message-ID: <C51vot.C5D@news.cso.uiuc.edu> References: <1993Apr6.051201.9535@ncsu.edu> Sender: usenet@news.cso.uiuc.edu (Net Noise owner) Organization: University of Illinois at Urbana Lines: 2 @@@@37929.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!network.ucsd.edu!munnari.oz.au!uniwa!DIALix!not-for-mail From: steveq@DIALix.oz.au (Steve Quartly) Subject: WANTED: SIRD Alogorythmn Summary: WANTED: A Sird Alogorythmn Keywords: Sird Message-ID: <1praaa$pqv@DIALix.oz.au> Date: 6 Apr 93 23:08:58 GMT Article-I.D.: DIALix.1praaa$pqv Organization: DIALix Services, Perth, Western Australia Lines: 12 NNTP-Posting-Host: localhost.dialix.oz.au X-Newsreader: NN version 6.4.19 #1 Hi, I'm interested in writing a program to generate a SIRD picture, you know the stereogram where you cross your eyes and the picture becomes 3D. Does anyone have one or know where I can get one? Please e-mail to steveq@sndcrft.DIALix.oz.au with any replies. Many thanks for your help. Steve Q. @@@@37930.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!mcsun!fuug!tahko.lpr.carel.fi!tahko.lpr.carel.fi!not-for-mail From: ari@tahko.lpr.carel.fi (Ari Suutari) Subject: Any graphics packages available for AIX ? Date: 6 Apr 1993 10:00:38 +0300 Organization: Carelcomp Oy Lines: 24 Message-ID: <1pr9qnINNiag@tahko.lpr.carel.fi> NNTP-Posting-Host: tahko.lpr.carel.fi Keywords: gks graphics Does anybody know if there are any good 2d-graphics packages available for IBM RS/6000 & AIX ? I'm looking for something like DEC's GKS or Hewlett-Packards Starbase, both of which have reasonably good support for different output devices like plotters, terminals, X etc. I have tried also xgks from X11 distribution and IBM's implementation of Phigs. Both of them work but we require more output devices than just X-windows. Our salesman at IBM was not very familiar with graphics and I am not expecting for any good solutions from there. Ari --- Ari Suutari ari@carel.fi Carelcomp Oy Lappeenranta FINLAND @@@@37931.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!gatech!swrinde!elroy.jpl.nasa.gov!usc!cs.utexas.edu!uunet!mcsun!sun4nl!fwi.uva.nl!wijkstra From: wijkstra@fwi.uva.nl (Marcel Wijkstra (AIO)) Subject: Re: BW hardcopy of colored window? Message-ID: <1993Apr6.075547.12457@fwi.uva.nl> Keywords: color hardcopy print Sender: news@fwi.uva.nl Nntp-Posting-Host: ic.fwi.uva.nl Organization: FWI, University of Amsterdam References: <1542@ixos.de> Date: Tue, 6 Apr 1993 07:55:47 GMT Lines: 38 mars@ixos.de (Martin Stein) writes: #I use xwd/xpr (from the X11R5 dist.) and various programs of the #ppm-tools to print hardcopies of colored X windows. My problem is, I don't like xpr. It gives (at least, the X11R4 version does) louzy output: the hardcopy looks very grainy to me. Instead, I use pnmtops. This takes full advantage PostScript, and lets the printer do the dirty job of dithering a (graylevel) image to black and white dots. So: if you have a PostScript printer, try: xwdtopnm <xwdfile> | # convert to PPM [ppmtopgm |] # .. to graylevel for smaller file to print pnmtops -noturn | # .. to PostScript lpr # print pnmtops Has several neat options, but use them with care: If you want your image to be 4" wide, use: pnmtops -noturn -scale 100 -width 4 -noturn Prevents the image from being rotated (if it is wider than it is high) -width 4 Specifies the PAPER width (not the image width - see below) -scale 100 Is used because if the image is small, it may fit within a width less than 4", and will thus be printed smaller than 4" wide. If you first scale it up a lot, it will certainly not fit in 4", and will be scaled down by pnmtops automatically to fit the specified paper width. In short: pnmtops will scale an image down to fit the paper size, but it will not blow it up automatically. Hope this helps. Marcel. -- X Marcel Wijkstra AIO (wijkstra@fwi.uva.nl) |X| Faculty of Mathematics and Computer Science X University of Amsterdam The Netherlands ======Life stinks. Fortunately, I've got a cold.======== @@@@37932.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!pipex!marble.uknet.ac.uk!mcsun!news.funet.fi!butler.cc.tut.fi!lehtori.cc.tut.fi!not-for-mail From: jk87377@lehtori.cc.tut.fi (Kouhia Juhana) Subject: Re: More gray levels out of the screen Date: 6 Apr 1993 12:36:08 +0300 Organization: Tampere University of Technology Lines: 21 Distribution: inet Message-ID: <1priu8$k88@cc.tut.fi> References: <1pp991$t63@cc.tut.fi> <C51C4r.BtG@csc.ti.com> <1993Apr6.011605.909@cis.uab.edu> NNTP-Posting-Host: cc.tut.fi In article <1993Apr6.011605.909@cis.uab.edu> sloan@cis.uab.edu (Kenneth Sloan) writes: > >Why didn't you create 8 grey-level images, and display them for >1,2,4,8,16,32,64,128... time slices? By '8 grey level images' you mean 8 items of 1bit images? It does work(!), but it doesn't work if you have more than 1bit in your screen and if the screen intensity is non-linear. With 2 bit per pixel; there could be 1*c_1 + 4*c_2 timing, this gives 16 levels, but they are linear if screen intensity is linear. With 1*c_1 + 2*c_2 it works, but we have to find the best compinations -- there's 10 levels, but 16 choises; best 10 must be chosen. Different compinations for the same level, varies a bit, but the levels keeps their order. Readers should verify what I wrote... :-) Juhana Kouhia @@@@37933.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!paladin.american.edu!news.univie.ac.at!blekul11!frmop11.cnusc.fr!jussieu!amertume.ufr-info-p7.ibp.fr!renouar From: renouar@amertume.ufr-info-p7.ibp.fr (Renouard Olivier) Subject: LOOKING for CTDS ! Message-ID: <1993Apr5.185035.15108@jussieu.fr> Keywords: CTDS Sender: news@jussieu.fr (Le Facteur) Nntp-Posting-Host: amertume.ufr-info-p7.ibp.fr Organization: Universite PARIS 7 - UFR d'Informatique Date: Mon, 5 Apr 1993 18:50:35 GMT Lines: 5 I can't find CTDS (Connect The Dots Smoother) in France. If it is a commercial program I'll happily pay whatever it may cost (do not take it litterally). Please help! I have *LOTS* of PoV sources, texture images and animations though, if you are looking for something, just tell. @@@@37934.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!paladin.american.edu!news.univie.ac.at!blekul11!frmop11.cnusc.fr!jussieu!amertume.ufr-info-p7.ibp.fr!renouar From: renouar@amertume.ufr-info-p7.ibp.fr (Renouard Olivier) Subject: Re: POV previewer Message-ID: <1993Apr5.192402.15503@jussieu.fr> Sender: news@jussieu.fr (Le Facteur) Nntp-Posting-Host: amertume.ufr-info-p7.ibp.fr Organization: Universite PARIS 7 - UFR d'Informatique References: <1993Mar26.175056.8374@brt.deakin.edu.au> <1993Mar27.170305.5671@hippo.ru.ac.za> Date: Mon, 5 Apr 1993 19:24:02 GMT Lines: 10 Actually I am trying to write something like this but I encounter some problems, amongst them: - drawing a 3d wireframe view of a quadric/quartic requires that you have the explicit equation of the quadric/quartic (x, y, z functions of some parameters). How to convert the implicit equation used by PoV to an explicit one? Is it mathematically always possible? I don't have enough math to find out by myself, has anybody heard about useful books on the subject? @@@@37935.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usenet.ins.cwru.edu!magnus.acs.ohio-state.edu!cis.ohio-state.edu!udecc.engr.udayton.edu!blackbird.afit.af.mil!falcon.aamrl.wpafb.af.mil!dsnyder From: dsnyder@falcon.aamrl.wpafb.af.mil Subject: Re: Real Time Graphics?? Message-ID: <1993Apr5.114428.2061@falcon.aamrl.wpafb.af.mil> Date: 5 Apr 93 11:44:28 EST References: <C4vA9r.KK7@taurus.cs.nps.navy.mil> Distribution: na Organization: USAF AL/CFH, WPAFB, Dayton, OH Lines: 30 In article <C4vA9r.KK7@taurus.cs.nps.navy.mil>, stockel@oahu.oc.nps.navy.mil (Jim Stockel) writes: > Hi, > > I will be writing a data acquisition program to collect data from a > variety of sources including RS232, and external A/D's, and I would > like to be able to display the data in near realtime. I've done this > type of thing on PC's and other machines, but I am unaware of any graphics > package that could help me with this on a UNIX machine. > > ....... > > Does anyone have any ideas on commercial or "free" packages that might > suit my needs? I would really appreciate any input. I'm sure this has > been done many times before. > For a commerical package try WAVE from Precision Visuals 505-530-6563 For a free package try KHOROS from University of New Mexico 508-277-6563 ftp from ptrg.eece.unm.edu Login in anonyomus or ftp with a valid email address as the password cd /pub/khoros/release That will get you to the right place. David @@@@37936.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!wupost!uunet!think.com!cass.ma02.bull.com!pluto.uk03.bull.co.uk!scrowe From: scrowe@hemel.bull.co.uk (Simon Crowe) Subject: BGI Drivers for SVGA Message-ID: <1993Apr6.113029.12001@uk03.bull.co.uk> Summary: Ftp site for SVGA Driver Keywords: BGI, SVGA Sender: @uk03.bull.co.uk Nntp-Posting-Host: bogart Organization: Bull HN UK Date: Tue, 6 Apr 93 11:30:29 GMT Lines: 11 I require BGI drivers for Super VGA Displays and Super XVGA Displays. Does anyone know where I could obtain the relevant drivers ? (FTP sites ??) Regards Simon Crowe @@@@37937.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!news.chalmers.se!pc5_b109.et.hj.se!d91-fad From: d91-fad@tekn.hj.se (DANIEL FALK) Subject: RE: VESA on the Speedstar 24 Message-ID: <d91-fad.23.734094936@tekn.hj.se> Date: 6 Apr 93 11:15:36 GMT Sender: news@news.chalmers.se Organization: H|gskolan i J|nk|ping Lines: 39 Nntp-Posting-Host: pc5_b109.et.hj.se >>>kjb/MGL/uvesa32.zip >>> >>>This is a universal VESA driver. It supports most video >>>boards/chipsets (include the Speedstar-24 and -24X) up to >>>24 bit color. >>> >>>Terry >>> >>>P.S. I've tried it on a Speedstar-24 and -24X and it works. :) >>Not with all software. :( For instance it doesn't work at all with >>Animator Pro from Autodesk. It can't detect ANY SVGA modes when >>running UniVESA. This is really a problem as we need a VESA driver >>for both AA Pro and some hi-color stuff. :( >Just out of curiosity... Are you using the latest version (3.2)? Versions >previous to this did not fill in all of the capabilities bits and other >information correctly. I had problems with a lot of software until I got >this version. (I don't think the author got around to posting an >announcementof it (or at least I missed it), but 3.2 was available in the >directory indicated as of 3/29.) I sure did use version 3.2. It works fine with most software but NOT with Animator Pro and that one is quite important to me. Pretty useless program without that thing working IMHO. So I hope the author can fix that. /Daniel... ============================================================================= !! Daniel Falk \\ " Don't quote me! No comments! " !! !! ^^^^^^ ^^^^ \\ Ebenezum the Great Wizard !! !! d91-fad@tekn.hj.se \\ !! !! d91fad@hjds90.hj.se // Also known as the mega-famous musician !! !! Jkpg, Sweeeeeden... \\ Leinad of The Yellow Ones !! ============================================================================= @@@@37938.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!wupost!uunet!pipex!marble.uknet.ac.uk!warwick!bham!ibm3090.bham.ac.uk!SITUNAYA From: SITUNAYA@IBM3090.BHAM.AC.UK Subject: (None set) Date: 06 Apr 93 14:59:30 BST Organization: The University of Birmingham, United Kingdom Lines: 5 Message-ID: <935906145930@ibm3090.bham.ac.uk> NNTP-Posting-Host: ibm3090.bham.ac.uk ============================================================================== Bear with me i'm new at this game, but could anyone explain exactly what DMORF does, does it simply fade one bitmap into another or does it re shape one bitma p into another. Please excuse my ignorance, i' not even sure if i've posted thi s message correctly. @@@@37939.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!wupost!uunet!pipex!marble.uknet.ac.uk!warwick!bham!ibm3090.bham.ac.uk!SITUNAYA From: SITUNAYA@IBM3090.BHAM.AC.UK Subject: HELP WANTED FOR DMORF.......! Date: 06 Apr 93 15:04:10 BST Organization: The University of Birmingham, United Kingdom Lines: 6 Message-ID: <930406150410@ibm3090.bham.ac.uk> NNTP-Posting-Host: ibm3090.bham.ac.uk ============================================================================== Please bear with me as i am new at this game, i apologize unreservedly if i hav e posted another message earlier by mistake. but i digress, could anyone out th ere please explain exactly what DMORF does (dtax.exe). Does it simply fade one bitmap into another or does it reshape one bitmap into another. Excuse my ignor ance..... @@@@37940.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!pipex!marble.uknet.ac.uk!warwick!bham!ibm3090.bham.ac.uk!SITUNAYA From: SITUNAYA@IBM3090.BHAM.AC.UK Subject: test....(sorry) Date: 06 Apr 93 15:07:18 BST Organization: The University of Birmingham, United Kingdom Lines: 1 Message-ID: <930706150718@ibm3090.bham.ac.uk> NNTP-Posting-Host: ibm3090.bham.ac.uk ============================================================================== @@@@37941.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!sdd.hp.com!network.ucsd.edu!news.service.uci.edu!unogate!stgprao From: stgprao@st.unocal.COM (Richard Ottolini) Subject: Re: Rumours about 3DO ??? Message-ID: <1993Apr6.144520.2190@unocal.com> Sender: news@unocal.com (Unocal USENET News) Organization: Unocal Corporation References: <1993Mar31.074502.3590@aragorn.unibe.ch> <h1p4s4g@zola.esd.sgi.com> <C51Eyz.4Ix@optimla.aimla.com> Date: Tue, 6 Apr 1993 14:45:20 GMT Lines: 5 They need a hit software product to encourage software sales of the product, i.e. the Pong, Pacman, VisiCalc, dBase, or Pagemaker of multi-media. There are some multi-media and digital television products out there already, albeit, not as capable as 3DO's. But are there compelling reasons to buy such yet? Perhaps someone in this news group will write that hit software :-) @@@@37942.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!husc-news.harvard.edu!husc11.harvard.edu!jiu1 Subject: Technical Help Sought Message-ID: <1993Apr6.112102.22553@husc3.harvard.edu> From: jiu1@husc11.harvard.edu (Haibin Jiu) Date: 6 Apr 93 11:21:00 EDT Organization: Harvard University Science Center Nntp-Posting-Host: husc11.harvard.edu Lines: 9 Hi! I am in immediate need for details of various graphics compression techniques. So if you know where I could obtain descriptions of algo- rithms or public-domain source codes for such formats as JPEG, GIF, and fractals, I would be immensely grateful if you could share the info with me. This is for a project I am contemplating of doing. Thanks in advance. Please reply via e-mail if possible. --hBJ @@@@37943.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!emory!gatech!usenet.ufl.edu!travis.csd.harris.com!travis.csd.harris.com!not-for-mail From: srp@travis.csd.harris.com (Stephen Pietrowicz) Subject: Surface normal orientations Message-ID: <1pscti$aqe@travis.csd.harris.com> Date: 6 Apr 93 08:59:30 GMT Article-I.D.: travis.1pscti$aqe Organization: Harris CSD, Ft. Lauderdale, FL Lines: 20 NNTP-Posting-Host: travis.csd.harris.com Some rendering programs require that all surface normals point in the same direction. (ie: On a closed cube, all normals point outwards). You can use the points on the faces to determine the direction of the normal, by making sure that all points are either in clockwise or counter-clockwise order. How do you go about orienting all normals in the same direction, given a set of points, edges and faces? Say that you had a cube with all faces that have their normals facing outwards, except for one face. What's the best way to realize that face is "flipped", and should have it's points re-ordered? I thought I had a good way of telling this, but then realized that the algorithm I had would only tell you if you had points in clockwise order for a 2d polygon. I'd like something for 3d data. Any hints, tips, references would be appreciated. Steve -- Where humor is concerned there are no standards -- no one can say what is good or bad, although you can be sure that everyone will. -- John Kenneth Galbraith ------- These opinions are my own. @@@@37944.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!utcsri!utnut!torn!newshost.uwo.ca!gaul.csd.uwo.ca!egerter From: egerter@gaul.csd.uwo.ca (Barry Egerter) Subject: Re: Graphics Library Package Organization: Computer Science Dept., Univ. of Western Ontario, London, Canada Date: Tue, 6 Apr 1993 15:50:32 GMT Message-ID: <1993Apr6.155032.15949@julian.uwo.ca> References: <1993Apr6.051201.9535@ncsu.edu> Sender: egerter@obelix.gaul.csd.uwo.ca Nntp-Posting-Host: obelix.gaul.csd.uwo.ca Lines: 43 WGT is the WordUp Graphics Toolkit, designed by yours truly and my co-programmer (and brother) Chris Egerter. It is a Turbo/Borland C++ graphics library for programming in 320*200*256 VGA. We are currently producing it as shareware, but in a few years it may be a commercial product (excuse typos, there's no backspace on this terminal). Features include: - loading and saving bit-images (called blocks from herein) - flipping, resizing and warping blocks - loading and saving palette, fading, several in memory at once - graphics primitives such as line, circle, bar, rectangle - region fill (not the usually useless floodfill) - sprites (animated bitmaps), up to 200 onscreen at once - joystick/mouse support - SB support (VOC and CMF) - tile-based game creation using 16*16 pixel tiles to create a 320*200 tile map (or game world) like in Duke Nuke 'Em - number of sprites increased to 1000 - Professional Sprite Creator utility and Map Maker - routines to simplify scrolling games using maps, etc - FLI playing routines, sprites can be animated over the FLI while playing - PCX support, soon GIF - EMS/XMS coming soon as well Leave E-mail to Barry Egerter at egerter@obelix.gaul.csd.uwo.ca Files available on: (use mget wgt*.zip) SIMTEL20 and mirrors pd1:<msdos.turbo-c> nic.funet.fi pub/msdos/games/programming Some sites may not have recent files, contact me for info regarding the up-to- date information. @@@@37945.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!das.wang.com!wang!news From: IMAGING.CLUB@OFFICE.WANG.COM ("Imaging Club") Subject: Re: Signature Image Database Organization: Mail to News Gateway at Wang Labs Date: Tue, 6 Apr 1993 15:02:12 GMT Message-ID: <199304061402.AA05965@tuna.wang.com> Sender: news@wang.com Lines: 21 Contact Signaware Corp 800-4583820 800 6376564 -------------------------------- Original Memo -------------------------------- BCC: Vincent Wall From: Imaging Club Subject: Signature verification ? Date Sent: 05/04/93 sci.image.processing From: yyqi@ece.arizona.edu (Yingyong Qi) Subject: Signature Image Database Organization: U of Arizona Electrical and Computer Engineering Hi, All: Could someone tell me if there is a database of handwriting signature images available for evaluating signature verification systems. Thanks. YY @@@@37946.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!decwrl!concert!gatech!willis1.cis.uab.edu!sloan From: sloan@cis.uab.edu (Kenneth Sloan) Subject: Re: Surface normal orientations Message-ID: <1993Apr6.181509.1973@cis.uab.edu> Date: 6 Apr 93 18:15:09 GMT Article-I.D.: cis.1993Apr6.181509.1973 References: <1pscti$aqe@travis.csd.harris.com> <1993Apr6.175117.1848@cis.uab.edu> Organization: CIS, University of Alabama at Birmingham Lines: 16 In article <1993Apr6.175117.1848@cis.uab.edu> sloan@cis.uab.edu (Kenneth Sloan) writes: A brilliant algorithm. *NOT* Seriously - it's correct, up to a sign change. The flaw is obvious, and will therefore not be shown. sorry about that. -- Kenneth Sloan Computer and Information Sciences sloan@cis.uab.edu University of Alabama at Birmingham (205) 934-2213 115A Campbell Hall, UAB Station (205) 934-5473 FAX Birmingham, AL 35294-1170 @@@@37947.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!cs.utexas.edu!utnut!torn!newsserver.cs.uwindsor.ca!pallis From: pallis@server.uwindsor.ca (PALLIS DIMITRIOS ) Subject: Re: Genoa Blitz 24 hits 1600x1200x256 NI ! Message-ID: <3295@newsserver.cs.uwindsor.ca> Date: 5 Apr 1993 21:00:36 GMT References: <D56BBGPO@zelator.in-berlin.de> Sender: news@server.uwindsor.ca Followup-To: comp.graphics.animation Lines: 3 i am sorry, but this genoa card does nothing that the ATI ultra plus 2mb can't do, PLUS the ATI costs 330$US street price .... @@@@37948.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!willis1.cis.uab.edu!sloan From: sloan@cis.uab.edu (Kenneth Sloan) Subject: Re: Surface normal orientations Message-ID: <1993Apr6.175117.1848@cis.uab.edu> Organization: CIS, University of Alabama at Birmingham References: <1pscti$aqe@travis.csd.harris.com> Date: Tue, 6 Apr 1993 17:51:17 GMT Lines: 42 In article <1pscti$aqe@travis.csd.harris.com> srp@travis.csd.harris.com (Stephen Pietrowicz) writes: >... >How do you go about orienting all normals in the same direction, given a >set of points, edges and faces? Look for edge inconsistencies. Consider two vertices, p and q, which are connected by at least one edge. If (p,q) is an edge, then (q,p) should *not* appear. If *both* (p,q) and (q,p) appear as edges, then the surface "flips" when you travel across that edge. This is bad. Assuming (warning...warning...warning) that you have an otherwise acceptable surface - you can pick an edge, any edge, and traverse the surface enforcing consistency with that edge. 0) pick an edge (p,q), and mark it as "OK" 1) for each face, F, containing this edge (if more than 2, oops) make sure that all edges in F are consistent (i.e., the Face should be [(p,q),(q,r),(r,s),(s,t),(t,p)]). Flip those which are wrong. Mark all of the edges in F as "OK", and add them to a queue (check for duplicates, and especially inconsistencies - don't let the queue have both (p,q) and (q,p)). 2) remove an edge from the queue, and go to 1). If a *marked* edge is discovered to be inconsistent, then you lose. If step 1) finds more than one face sharing a particular edge, then you lose. Otherwise, when done, all of the edges will be consistent. Which means that all of the surface normals will either point IN or OUT. Deciding which way is OUT is left as an exercise... -- Kenneth Sloan Computer and Information Sciences sloan@cis.uab.edu University of Alabama at Birmingham (205) 934-2213 115A Campbell Hall, UAB Station (205) 934-5473 FAX Birmingham, AL 35294-1170 @@@@37949.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!howland.reston.ans.net!bogus.sura.net!darwin.sura.net!sgiblab!sgigate!odin!fido!krypton!gavin From: gavin@krypton.asd.sgi.com (Gavin Bell) Subject: Re: Surface normal orientations Date: 6 Apr 1993 17:58:21 GMT Organization: Silicon Graphics, Inc. Mountain View, CA Lines: 38 Message-ID: <1psgbt$f2d@fido.asd.sgi.com> References: <1pscti$aqe@travis.csd.harris.com> NNTP-Posting-Host: krypton.asd.sgi.com In <1pscti$aqe@travis.csd.harris.com> srp@travis.csd.harris.com (Stephen Pietrowicz) writes: >How do you go about orienting all normals in the same direction, given a >set of points, edges and faces? This algorithm works well for me: Algorithm to attempt to find outward-facing normals: --------------------------------------------------- First, mark all faces as UNKNOWN. Then create an edge dictionary that allows you to find all of the faces sharing a given edge (where an edge is two integers representing the two shared vertices). Pick an arbitrary face and mark it COUNTER_CLOCKWISE. Using the edge dictionary, orient all surrounding faces based on the orientation of this face. And recurse for all surrounding faces, consistently orienting the entire surface. Find the average of the vertices in this surface. Using that point, calculate a volume measurement, taking into account the face's orientation. If the volume turns out to be positive, assume the faces are oriented correctly. If it is negative, reverse their orientations (mark them CLOCKWISE). If any faces are still UNKNOWN after this, choose another face and go through the algorithm again. At the end, faces marked CLOCKWISE must have their indices reversed before facet normals are found. (Note: if you are running on Silicon Graphics machines and buy the IRIS Inventor 3D toolkit developers package you have the source to this algorithm-- see /usr/src/Inventor/tools/ivnorm/. If you're not... sorry, I can't give out the source, and even if I could it relies heavily on Inventor). -- --gavin (gavin@sgi.com, (415)390-1024) @@@@37950.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!pipex!sunic!news.chalmers.se!dtek.chalmers.se!d9hh From: d9hh@dtek.chalmers.se (Henrik Harmsen) Subject: Re: 16 million vs 65 thousand colors Message-ID: <d9hh.734115637@dtek.chalmers.se> Sender: news@news.chalmers.se Nntp-Posting-Host: hacke11.dtek.chalmers.se Organization: Chalmers University of Technology, Gothenburg Sweden References: <1993Mar26.210323.27802@midway.uchicago.edu> <dotzlaw-020493084300@murphy.biochem.umanitoba.ca> <d9hh.733845825@dtek.chalmers.se> <1pkpraINNck9@gap.caltech.edu> Date: Tue, 6 Apr 1993 17:00:37 GMT Lines: 37 andrey@cco.caltech.edu (Andre T. Yew) writes: >d9hh@dtek.chalmers.se (Henrik Harmsen) writes: >>1-4 bits per R/G/B gives horrible machbanding visible in almost any picture. >>5 bits per R/G/B (32768, 65000 colors) gives visible machbanding >>color-gradient picture has _almost_ no machbanding. This color-resolution is >>see some small machbanding on the smooth color-gradient picture, but all in all, >>There _ARE_ situiations where you get visible mach-banding even in >>a 24 bit card. If >>you create a very smooth color gradient of dark-green-white-yellow >>or something and turn >>up the contrast on the monitor, you will probably see some mach-banding. > While I don't mean to damn Henrik's attempt to be helpful here, >he's using a common misconception that should be corrected. > Mach banding will occur for any image. It is not the color >quantization you see when you don't have enough bits. It is the >human eye's response to transitions or edges between intensities. >The result is that colors near the transistion look brighter on >the brighter side and darker on the darker side. >--Andre Yeah, of course... The term 'mach banding' was not the correct one, it should've been 'color quantization effect'. Although a bad color quantization effect could result in some visible mach-bands on a picture that was smooth before it was quantizised. -- Henrik Harmsen Internet: d9hh@dtek.chalmers.se Chalmers University of Technology, Sweden. "I haven't lost my mind -- it's backed up on tape somewhere." @@@@37951.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!udecc.engr.udayton.edu!blackbird.afit.af.mil!falcon.aamrl.wpafb.af.mil!dsnyder From: dsnyder@falcon.aamrl.wpafb.af.mil Subject: Re: Real Time Graphics?? Message-ID: <1993Apr6.132223.2065@falcon.aamrl.wpafb.af.mil> Date: 6 Apr 93 13:22:23 EST References: <C4vA9r.KK7@taurus.cs.nps.navy.mil> <1993Apr5.114428.2061@falcon.aamrl.wpafb.af.mil> Distribution: na Organization: USAF AL/CFH, WPAFB, Dayton, OH Lines: 27 In article <1993Apr5.114428.2061@falcon.aamrl.wpafb.af.mil>, dsnyder@falcon.aamrl.wpafb.af.mil writes: > In article <C4vA9r.KK7@taurus.cs.nps.navy.mil>, stockel@oahu.oc.nps.navy.mil (Jim Stockel) writes: >> Hi, >> >> Opps! typed in the phone numbers wrong. Here are the correct numbers. > > For a commerical package try WAVE from Precision Visuals 303-530-9000 > > For a free package try KHOROS from University of New Mexico 505-277-6563 > ftp from > ptrg.eece.unm.edu > > Login in anonyomus or ftp with a valid email address as the password > cd /pub/khoros/release @@@@37952.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!rphroy!cveng2.cad.gmeds.com!ccadmn1.cad.gmeds.com!bsaffo01 From: bsaffo01@cad.gmeds.com (Brian H. Safford) Subject: IGES Viewer for DOS/Windows Date: Tue, 6 Apr 1993 18:55:34 GMT Organization: EDS/Cadillac Lines: 10 Message-ID: <bsaffo01.5.734122534@cad.gmeds.com> NNTP-Posting-Host: ccadmn1.cad.gmeds.com Anybody know of an IGES Viewer for DOS/Windows? I need to be able to display ComputerVision IGES files on a PC running Windows 3.1. Thanks in advance. +-----------------------------------------------------------+ | Brian H. Safford EMAIL: bsaffo01@cad.gmeds.com | | Electronic Data Systems PHONE: (313) 696-6302 | +-----------------------------------------------------------+ | NOTE: The views and opinions expressed herein are mine, | | and DO NOT reflect those of Electronic Data Systems Corp. | +-----------------------------------------------------------+ @@@@37953.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!newsserver.jvnc.net!netnews.upenn.edu!netnews.cc.lehigh.edu!ns1.cc.lehigh.edu!brr1 From: brr1@ns1.cc.lehigh.edu (BRANT RICHARD RITTER) Subject: computer graphics to vcr? Message-ID: <1993Apr6.050845.65067@ns1.cc.lehigh.edu> Date: 6 Apr 93 05:08:45 GMT Organization: Lehigh University Lines: 15 HELP MY FRIEND AND I HAVE A CLASS PROJECT IN WHICH WE ARE TRYING TO MAKE A COMPUTER ANIMATED MOVIE OF SORTS WITH THE DISNEY ANIMATION AND WOULD LIKE TO PUT WHAT WE HAVE ON A VCR IS THIS POSSIBLE? IS IT EASY AND RELATIVELY CHEAP? IF SO HOW? WE BOTH HAVE 386 IBM COMPATIBLES BUT ARE RELATIVELY CLUELESS WITH COMPUTERS IF YOU COULD HELP PLEASE DO. THANX. -- BRANT RITTER ----------------------------------------------------- moshing-- "a cosmic cesspool of physical delight." -A. Kiedas RHCP ----------------------------------------------------- @@@@37954.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!engr.uark.edu!engr.engr.uark.edu!mbh2 From: mbh2@engr.engr.uark.edu (M. Barton Hodges) Subject: Stereoscopic imaging Message-ID: <1993Apr6.195548.9469@engr.engr.uark.edu> Summary: Stereoscopic imaging Keywords: stereoscopic Sender: netnews@engr.uark.edu (NetNews Administrator) Nntp-Posting-Host: engr.engr.uark.edu Organization: University of Arkansas Date: Tue, 6 Apr 1993 19:55:48 GMT Lines: 8 I am interested in any information on stereoscopic imaging on a sun workstation. For the most part, I need to know if there is any hardware available to interface the system and whether the refresh rates are sufficient to produce quality image representations. Any information about the subject would be greatly appreciated. Thanks! @@@@37955.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!purdue!mentor.cc.purdue.edu!news From: ab@nova.cc.purdue.edu (Allen B) Subject: Re: Fractals? what good are they? Message-ID: <C52wBw.CGI@mentor.cc.purdue.edu> Sender: news@mentor.cc.purdue.edu (USENET News) Organization: Purdue University References: <7155@pdxgate.UUCP> Date: Tue, 6 Apr 1993 20:16:43 GMT Lines: 51 In article <7155@pdxgate.UUCP> idr@rigel.cs.pdx.edu (Ian D Romanick) writes: > One thing: a small change in initial conditions can cause a huge > change in final conditions. There are certain things about the way > the plate tektoniks and volcanic activity effect a land scape that > is, while not entirely random, unpredictable. This is also true with > fractals, so one could also conclude that you could model this > fractally. Yeah, and it's also true most long complicated sequences of events, calculations, or big computer programs in general. I don't argue that you can get similar and maybe useful results from fractals, I just question whether you >should<. The fractal fiends seem to be saying that any part of a system that we can't model should be replaced with a random number generator. That has been useful, for instance, in making data more palatable to human perception or for torture testing the rest of the system, but I don't think it has much to do with fractals, and I certainly would rather that the model be improved in a more explicable manner. I guess I just haven't seen all these earth-shaking fractal models that explain and correlate to the universe as it actually exists. I really hope I do, but I'm not holding my self-similar breath. > There is one other thing that fractals are good for: fractal > image compression. Uh huh. I'll believe it when I see it. I've been chasing fractal compression for a few years, and I still don't believe in it. If it's so great, how come we don't see it competing with JPEG? 'Cause it can't, I'll wager. Actually, I have wagered, I quit trying to make fractal compression work- and I was trying- because I don't think it's a reasonable alternative to other techniques. It is neat, though. :-) I'll reiterate my disbelief that everything is fractal. That's why I don't think fractal compression as it is widely explained is practical. I know Barnsley and Sloan have some tricks up their sleeves that make their demos work, but I don't see anyone using it in a real product. It's been six years since Iterated Systems was formed, right? "There are always going to be questions until there's a product out there," Sloan replies. The company plans to ship its first encoding devices in the summer, he says. In March, Iterated Systems will have the other half of the system: the decoders. - Scientific American, March 1990, page 77 Allen B (Don't even get me started :-) ) @@@@37956.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!uwm.edu!caen!batcomputer!cornell!uw-beaver!cs.ubc.ca!ironduke.cs.ubc.ca!not-for-mail From: ranjan@cs.ubc.ca (Vishwa Ranjan) Subject: Complex (i.e. with real and imaginary parts) bio-medical images.. Date: 6 Apr 1993 13:10:31 -0700 Organization: Computer Science, University of B.C., Vancouver, B.C., Canada Lines: 7 Distribution: world Message-ID: <1pso3nINNgdo@ironduke.cs.ubc.ca> NNTP-Posting-Host: ironduke.cs.ubc.ca Are complex bio-medical images available anywhere on the net for experimentation? By complex I mean that every sampled data point has a magnitude and phase information both. Thanks for any pointers, --Vishwa @@@@37957.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!ux1.cso.uiuc.edu!news.cso.uiuc.edu!uxa.cso.uiuc.edu!sas58295 From: sas58295@uxa.cso.uiuc.edu (Lord Soth ) Subject: MPEG for MS-DOS Date: Tue, 6 Apr 1993 20:08:35 GMT Message-ID: <C52vyC.7K2@news.cso.uiuc.edu> Sender: usenet@news.cso.uiuc.edu (Net Noise owner) Organization: University of Illinois at Urbana Lines: 13 Does anyone know where I can FTP MPEG for DOS from? Thanks for any help in advance. Email is preferred but posting is fine. Scott --------------------------------------------------------------------------- | Lord Soth, Knight |||| email to --> LordSoth@uiuc |||||||| | of the Black Rose |||| NeXT to ---> sas58295@sumter.cso.uiuc.edu |||||||| | @}--'-,--}-- ||||||||||||||||||||||||||||||||||||||||||||||||||||||| |-------------------------------------------------------------------------| | I have no clue what I want to say in here so I won't say anything. | --------------------------------------------------------------------------- @@@@37958.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!decwrl!uunet!nntp1.radiomail.net!fernwood!shograf!jack From: jack@shograf.com (Jack Ritter) Subject: Help!! Message-ID: <C531E6.7uo@shograf.com> Date: 6 Apr 93 22:06:06 GMT Article-I.D.: shograf.C531E6.7uo Distribution: usa Organization: SHOgraphics, Sunnyvale Lines: 9 I need a complete list of all the polygons that there are, in order. I'll summarize to the net. -------------------------------------------------------- "If only I had been compiled with the '-g' option." --------------------------------------------------------- @@@@37959.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!decwrl!waikato.ac.nz!canterbury.ac.nz!geoffrey From: geoffrey@cosc.canterbury.ac.nz (Geoff Thomas) Subject: Re: Help! 256 colors display in C. Keywords: graphics Message-ID: <C533EM.Cv7@cantua.canterbury.ac.nz> Date: 6 Apr 93 22:49:34 GMT Article-I.D.: cantua.C533EM.Cv7 References: <C4zu5p.8Bn@constellation.ecn.uoknor.edu> Organization: University of Canterbury, Christchurch, New Zealand Lines: 21 Nntp-Posting-Host: huia.canterbury.ac.nz You'll probably have to set the palette up before you try drawing in the new colours. Use the bios interrupt calls to set the r g & b values (in the range from 0-63 for most cards) for a particular palette colour (in the range from 0-255 for 256 colour modes). Then you should be able to draw pixels in those palette values and the result should be ok. You might have to do a bit of colourmap compressing if you have more than 256 unique rgb triplets, for a 256 colour mode. Geoff Thomas geoffrey@cosc.canterbury.ac.nz Computer Science Dept. University of Canterbury Private Bag +-------+ Christchurch | Oook! | New Zealand +-------+ @@@@37960.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!uwm.edu!caen!batcomputer!cornell!uw-beaver!cs.ubc.ca!larry.cs.ubc.ca!not-for-mail From: tessmann@cs.ubc.ca (Markus Tessmann) Subject: Re: Rumours about 3DO ??? Date: 6 Apr 1993 14:04:29 -0700 Organization: Computer Science, University of B.C., Vancouver, B.C., Canada Lines: 16 Message-ID: <1psr8tINN66r@larry.cs.ubc.ca> References: <1993Mar31.074502.3590@aragorn.unibe.ch> <h1p4s4g@zola.esd.sgi.com> <C51Eyz.4Ix@optimla.aimla.com> <1993Apr6.144520.2190@unocal.com> NNTP-Posting-Host: larry.cs.ubc.ca stgprao@st.unocal.COM (Richard Ottolini) writes: >They need a hit software product to encourage software sales of the product, >i.e. the Pong, Pacman, VisiCalc, dBase, or Pagemaker of multi-media. >There are some multi-media and digital television products out there already, >albeit, not as capable as 3DO's. But are there compelling reasons to buy >such yet? Perhaps someone in this news group will write that hit software :-) I've just had the good fortune to be hired by Electronic Arts as Senior Computer Graphics Artist at the Vancouver, Canada office. :^) The timing has a lot to do with the 3DO which EA is putting a lot of resources into. I do not know of any titles to be developed as yet but will be happy to post as things develop. I start there May 3. Markus Tessmann @@@@37961.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!uwm.edu!rpi!mustang.stu.rpi.edu!user From: johnsh@rpi.edu (Hugh Johnson) Subject: Re: QuickTime movie available Message-ID: <johnsh-060493161931@mustang.stu.rpi.edu> Date: 6 Apr 93 20:21:46 GMT Article-I.D.: mustang.johnsh-060493161931 References: <johnsh-040493161915@mustang.stu.rpi.edu> Followup-To: comp.graphics Organization: Rensselaer Polytechnic Institute Lines: 31 Nntp-Posting-Host: mustang.stu.rpi.edu In article <johnsh-040493161915@mustang.stu.rpi.edu>, I wrote: > > I've used the recently-released Macintosh application MPEG to QuickTime to > convert the excellent MPEG "canyon.mpg" into a QuickTime movie. While > anyone who would want this movie is perfectly able to convert it > themselves, I thought I'd let the net know that I'd be glad to mail copies > of mine out. The movie conversion took close to SIX HOURS on my poor > little IIcx; in other words, unless you've got a Quadra, you might not want > to tie up your machine in converting this file. > > The movie is a fast fly-through of a fractal-generated canyon landscape. > The movie is 58 seconds long, and uses the compact video compressor (i.e., > QuickTime v1.5). The movie looks okay on 8-bit displays, and looks > absolutely awesome on 16- and 24-bit displays. > > I'd be happy to mail this movie to the first 20 or so people who ask for > it. The only caveat is you need to be able to receive a nine-megabyte mail > message (the movie was stuff-it'ed down to seven megs, but binhex ruined > that party). If more then 20 people want this movie, then it's just more > evidence that the net needs a dedicated QuickTime FTP archive site. C'mon, > someone's gotta have a spare 1.2GB drive out there... Okay, I've received a whole lot of requests for the movie, so for simplicity's sake I can't mail out any more than I've already received (as of 16:30 EDT, Tuesday). Maybe it'll pop up on a site sooner or later. ============================================================================== Hugh Johnson (johnsh@rpi.edu) | Rensselaer Polytechnic Institute | Welcome to Macintosh. Troy, New York, USA | ============================================================================== @@@@37962.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!howland.reston.ans.net!noc.near.net!uunet!news.larc.nasa.gov!thrasher.larc.nasa.gov!george From: george@ccmail.larc.nasa.gov (George M. Brown) Subject: QC/MSC code to view/save images Date: Tue, 6 Apr 1993 21:57:25 GMT Organization: Client Specific Systems, Inc. Lines: 12 Message-ID: <george.4.734133445@ccmail.larc.nasa.gov> NNTP-Posting-Host: thrasher.larc.nasa.gov Dear Binary Newsers, I am looking for Quick C or Microsoft C code for image decoding from file for VGA viewing and saving images from/to GIF, TIFF, PCX, or JPEG format. I have scoured the Internet, but its like trying to find a Dr. Seuss spell checker TSR. It must be out there, and there's no need to reinvent the wheel. Thanx in advance. ////////////// The Internet is like a Black Hole.... @@@@37963.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!nic.csu.net!vmsb.is.csupomona.edu!cvadrmaz Subject: AutoCAD -> TIFF Can it be done???? Message-ID: <1993Apr6.150208.1@vmsb.is.csupomona.edu> From: cvadrmaz@vmsb.is.csupomona.edu Date: 6 Apr 93 15:02:08 PST Organization: California State Polytechnic University, Pomona Nntp-Posting-Host: acvax2 Nntp-Posting-User: cvadrmaz Lines: 9 Hello, I realize that this might be a FAQ but I have to ask since I don't get a change to read this newsgroup very often. Anyways for my senior project I need to convert an AutoCad file to a TIFF file. Please I don't need anyone telling me that the AutoCAD file is a vector file and the TIFF is a bit map since I have heard that about 100 times already I would just like to know if anyone knows how to do this or at least point me to the right direction. Any help greatly appreciated, Matt Georgy @@@@38099.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!news.ans.net!howland.reston.ans.net!bogus.sura.net!darwin.sura.net!mojo.eng.umd.edu!amjad From: amjad@eng.umd.edu (Amjad A Soomro) Subject: Gamma-Law Correction Date: 9 Apr 1993 15:51:44 GMT Organization: Project GLUE, University of Maryland, College Park Lines: 22 Distribution: USA Expires: 05/15/93 Message-ID: <1q462gINNdhe@mojo.eng.umd.edu> NNTP-Posting-Host: filter.eng.umd.edu Hi: I am digitizing a NTSC signal and displaying on a PC video monitor. It is known that the display response of tubes is non-linear and is sometimes said to follow Gamma-Law. I am not certain if these non-linearities are "Gamma-corrected" before encoding NTSC signals or if the TV display is supposed to correct this. Also, if 256 grey levels, for example, are coded in a C program do these intensity levels appear with linear brightness on a PC monitor? In other words does PC monitor display circuitry correct for "gamma errrors"? Your response is much appreciated. Amjad. Amjad Soomro CCS, Computer Science Center U. of Maryland at College Park email: amjad@wam.umd.edu @@@@38214.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!swrinde!network.ucsd.edu!ucsnews!eng!mlee From: mlee@eng.sdsu.edu (Mike Lee) Subject: MPEG for x-windows MONO needed. Date: 13 Apr 1993 19:01:20 GMT Organization: San Diego State University Computing Services Lines: 4 Message-ID: <1qf2m0$139@gondor.sdsu.edu> NNTP-Posting-Host: eng.sdsu.edu X-Newsreader: TIN [version 1.1 PL9] Hello, and thank you for reading this request. I have a Mpeg viewer for x-windows and it did not run because I was running it on a monochrome monitor. I need the mono-driver for mpeg_play. Please post the location of the file or better yet, e-mail me at mlee@eng.sdsu.edu. @@@@38215.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!howland.reston.ans.net!gatech!purdue!mentor.cc.purdue.edu!news From: ab@nova.cc.purdue.edu (Allen B) Subject: Re: thining algorithm Message-ID: <C5Fstu.6wz@mentor.cc.purdue.edu> Sender: news@mentor.cc.purdue.edu (USENET News) Organization: Purdue University References: <1q7615INNmi@shelley.u.washington.edu> Date: Tue, 13 Apr 1993 19:29:53 GMT Lines: 15 In article <1q7615INNmi@shelley.u.washington.edu> kshin@stein.u.washington.edu (Kevin Shin) writes: > I am trying obtain program to preprocess handwriting characters. > Like thining algorithm, graph alogrithm. > Do anyone know where I can obtain those? I usually use "Algorithms for graphics and image processing" by Theodosios Pavlidis, but other people here got them same idea and now 3 of 4 copies in the libraries have been stolen! Another reference is "Digital Image Processing" by Gonzalez and Wintz/Wood, which is widely available but a little expensive ($55 here- I just checked today). ab @@@@38216.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!gatech!purdue!mentor.cc.purdue.edu!news From: ab@nova.cc.purdue.edu (Allen B) Subject: Re: TIFF: philosophical significance of 42 Message-ID: <C5Ft68.8HC@mentor.cc.purdue.edu> Sender: news@mentor.cc.purdue.edu (USENET News) Organization: Purdue University References: <1993Apr10.160929.696@galki.toppoint.de> Date: Tue, 13 Apr 1993 19:37:18 GMT Lines: 20 In article <1993Apr10.160929.696@galki.toppoint.de> ulrich@galki.toppoint.de writes: > According to the TIFF 5.0 Specification, the TIFF "version number" > (bytes 2-3) 42 has been chosen for its "deep philosophical > significance". > Last week, I read the Hitchhikers Guide To The Galaxy, > Is this actually how they picked the number 42? I'm sure it is, and I am not amused. Every time I read that part of the TIFF spec, it infuriates me- and I'm none too happy about the complexity of the spec anyway- because I think their "arbitrary but carefully chosen number" is neither. Additionally, I find their choice of 4 bytes to begin a file with meaningless of themselves- why not just use the letters "TIFF"? (And no, I don't think they should have bothered to support both word orders either- and I've found that many TIFF readers actually don't.) ab @@@@38217.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!uunet!tarpit!tous!bilver!jwt!rjck!rob From: rob@rjck.UUCP (Robert J.C. Kyanko) Subject: Re: VGA 640x400 graphics mode Distribution: world Message-ID: <734553308snx@rjck.UUCP> References: <C55DoH.2AI@constellation.ecn.uoknor.edu> Date: Sun, 11 Apr 93 18:35:08 GMT Organization: Neptune Software Inc Lines: 15 gchen@essex.ecn.uoknor.edu writes in article <C55DoH.2AI@constellation.ecn.uoknor.edu>: > > Greetings! > > Does anybody know if it is possible to set VGA graphics mode to 640x400 > instead of 640x480? Any info is appreciated! Some VESA bios's support this mode (0x100). And *any* VGA should be able to support this (640x480 by 256 colors) since it only requires 256,000 bytes. My 8514/a VESA TSR supports this; it's the only VESA mode by card can support due to 8514/a restrictions. (A WD/Paradise) -- I am not responsible for anything I do or say -- I'm just an opinion. Robert J.C. Kyanko (rob@rjck.UUCP) @@@@38218.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!uunet!tarpit!tous!bilver!jwt!rjck!rob From: rob@rjck.UUCP (Robert J.C. Kyanko) Subject: Re: Weitek P9000 ? Distribution: world Message-ID: <734553652snx@rjck.UUCP> References: <abraxis.734340159@class1.iastate.edu> Date: Sun, 11 Apr 93 18:40:52 GMT Organization: Neptune Software Inc Lines: 23 abraxis@iastate.edu writes in article <abraxis.734340159@class1.iastate.edu>: > > Anyone know about the Weitek P9000 graphics chip? > Micron is selling it with their systems They rank them at 50 winmarks... > Any info would help... > thanks. It's supposedly a high-performance chip based upon workstation graphics accelerators. It's quite fast (I have 7), but as usual with new boards/chips the drivers are buggy for Windows. As far as Winmarks go, it depends upon the version. I think I got 42M winmarks with version 3.11. 2.5 yielded the 50+ number. I've also benchmarked this with Wintach at over 65 (from memory as well). As far as the low-level stuff goes, it looks pretty nice. It's got this quadrilateral fill command that requires just the four points. It's very fast, but beware of buggy drivers, and otherwise no non-windows support. -- I am not responsible for anything I do or say -- I'm just an opinion. Robert J.C. Kyanko (rob@rjck.UUCP) @@@@38219.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!rpi!lewism From: lewism@aix.rpi.edu (Michael C. Lewis) Subject: Re: Delaunay Triangulation Message-ID: <_wq5h#d@rpi.edu> Nntp-Posting-Host: aix.rpi.edu Organization: Rensselaer Polytechnic Institute, Troy, NY References: <lsk1v9INN93c@caspian.usc.edu> Date: Tue, 13 Apr 1993 19:07:13 GMT Lines: 16 In article <lsk1v9INN93c@caspian.usc.edu> zyeh@caspian.usc.edu (zhenghao yeh) writes: > >Does anybody know what Delaunay Triangulation is? >Is there any reference to it? >Is it useful for creating 3-D objects? If yes, what's the advantage? It is used to create a TIN (triangulated irregular network), which is basically a bunch of triangles which form a surface over a group of points. What is special about it is that the triangles formed are the most equalateral possible. Check out "Proceedings of AutoCarto N" where N is 8..10. Sorry, I don't have a specific reference describing the process. -Michael @@@@38220.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!udel!news.intercon.com!psinntp!newsserver.tasc.com!newsserver.tasc.com!news From: rubery@saturn.aitc.rest.tasc.com. (Dan Rubery) Subject: Graphic Formats Date: 13 Apr 1993 21:04:11 GMT Organization: TASC Lines: 7 Message-ID: <1qf9sbINN45r@jumbo.read.tasc.com> NNTP-Posting-Host: saturn.aitc.rest.tasc.com I am writing some utilies to convert Regis and Tektonic esacpe sequences into some useful formats. I would rather not have to goto a bitmap format. I can convert them to Window Meta FIles easily enough, but I would rather convert them to Corel Draw, .CDR, or MS Power Point, .PPT, files. Microsoft would not give me the format. I was wondering if anybody out there knows the formats for these two applications. @@@@38221.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!sdd.hp.com!ux1.cso.uiuc.edu!mp.cs.niu.edu!news.ecn.bgu.edu!siemens!aad From: aad@scr.siemens.com (Anthony A. Datri) Subject: Re: Nice gif code Message-ID: <C5FxwG.KJq@scr.siemens.com> Sender: news@scr.siemens.com (NeTnEwS) Nntp-Posting-Host: lovecraft.siemens.com Organization: Siemens Weyland-Yutani References: <93098.200236U34465@uicvm.uic.edu> <C5EEKo.8B3@incc.com> Date: Tue, 13 Apr 1993 21:19:28 GMT Lines: 7 >There is a thing called xgif xgif is the grandfather of XV. -- ======================================================================8--< @@@@38222.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!uwm.edu!cs.utexas.edu!utnut!nott!bnrgate!bnr.co.uk!pipex!sunic!uts!iesd!fischer From: fischer@iesd.auc.dk (Lars Peter Fischer) Subject: Re: Rumours about 3DO ??? In-Reply-To: archer@elysium.esd.sgi.com's message of 6 Apr 93 18:18:30 GMT Message-ID: <FISCHER.93Apr14001345@thor.iesd.auc.dk> Sender: news@iesd.auc.dk (UseNet News) Organization: Mathematics and Computer Science, Aalborg University References: <1993Mar31.074502.3590@aragorn.unibe.ch> <h1p4s4g@zola.esd.sgi.com> <C51Eyz.4Ix@optimla.aimla.com> <1993Apr6.144520.2190@unocal.com> <h48vtis@zola.esd.sgi.com> Date: 13 Apr 1993 23:13:45 GMT Lines: 11 >>>>> "Archer" == Archer (Bad Cop) Surly (archer@elysium.esd.sgi.com) Archer> How about "Interactive Sex with Madonna"? or "Sexium" for short. /Lars -- Lars Fischer, fischer@iesd.auc.dk | It takes an uncommon mind to think of CS Dept., Aalborg Univ., DENMARK. | these things. -- Calvin @@@@38223.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!sybus.sybus.com!myrddin!ckctpa!crash From: crash@ckctpa.UUCP (Frank "Crash" Edwards) Subject: Re: forms for curses Message-ID: <1993Apr13.213614.4271@ckctpa.UUCP> Date: Tue, 13 Apr 1993 21:36:14 GMT Reply-To: crash%ckctpa@myrddin.sybus.com (Frank "Crash" Edwards) References: <93098.200236U34465@uicvm.uic.edu> <C5EEKo.8B3@incc.com> <1993Apr12.220133.3436@ucsu.Colorado.EDU> Organization: Edwards & Edwards Consulting Followup-To: comp.unix.programmer Lines: 40 Note the Followup-To: header ... steelem@rintintin.Colorado.EDU (STEELE MARK A) writes: >Is there a collection of forms routines that can be used with curses? >If so where is it located? On my SVR4 Amiga Unix box, I've got -lform, -lmenu, and -lpanel for use with the curses library. Guess what they provide? :-) Unix Press, ie. Prentice-Hall, has a programmer's guide for these tools, referred to as the FMLI (Forms Mgmt Language Interface) and ETI (Extended Terminal Interface), now in it's 2nd edition. It is ISBN 0-13-020637-7. Paraphrased from the outside back cover: FMLI is a high-level programming tool for creating menus, forms, and text frames. ETI is a set of screen management library subroutines that promote fast development of application programs for window, panel, menu, and form manipulation. The FMLI is a shell package which reads ascii text files and produces screen displays for data entry and presentation. It consists of a "shell-like" environment of the "fmli" program and it's database files. It is section 1F in the Unix Press manual. The ETI are subroutines, part of the 3X manual section, provide support for a multi-window capability on an ordinary ascii terminal with controls built on top of the curses library. >Thanks >-Mark Steele >steelem@rintintin.colorado.edu -- Frank "Crash" Edwards Edwards & Edwards Consulting Voice: 813/786-3675 crash%ckctpa@myrddin.sybus.com, but please Data: 813/787-3675 don't ask UUNET to route it -- it's sloooow. There will be times in life when everyone you meet smiles and pats you on the back and tells you how great you are ... so hold on to your wallet. @@@@38224.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!clarkson!millernw From: millernw@craft.camp.clarkson.edu (Neal Miller) Subject: Re: Trying to view POV files..... Message-ID: <millernw.734741402@craft.camp.clarkson.edu> Sender: news@news.clarkson.edu Nntp-Posting-Host: craft.clarkson.edu Organization: Clarkson University References: <1993Apr11.132604.13400@ornl.gov> <C5EoqK.CAM@mentor.cc.purdue.edu> Date: Tue, 13 Apr 1993 22:50:02 GMT Lines: 31 merkelbd@sage.cc.purdue.edu (Brian Merkel) writes: >In article <1993Apr11.132604.13400@ornl.gov> ednobles@sacam.OREN.ORTN.EDU (Edward d Nobles) writes: >> >>I've been trying to view .tga files created in POVRAY. I have the Diamond >>SpeedStar 24 Video board (not the _24X_). So far I can convert them to >>jpeg using cjpeg and view them with CVIEW but that only displays 8 bit color. >> >>I'm looking for some way to convert and/or view them in 24 bit. >> >>I have UNIVESA (uvesa31.zip) and the DVPEG viewer but I don't get anything. >>Perhaps I am not setting up UNIVESA properly? If anyone has ideas about this >>please feel free to enlighten me... >> >>Just want to see the darn things in real color... >Image Alchemy (aka alchemy) will view the TGA files that POV outputs > and just about any other format you can think of. It will also convert > between all these. It's shareware, so it's probably available by FTP > somwhere out there in netland... Yep... Alchemy works fine on my Tseng400+DAC, but I think I remember reading that it only displays in 15-bit or so. Of course, that's still 32K colors which is nothing to sneeze at. Use the --v flag. -- ----------------------------------------------------------------------------- Neal Miller | "Why not go mad?" | millernw@craft.camp.clarkson.edu Clarkson University | - Ford Prefect | dark@craft.camp.clarkson.edu ----------------------------------------------------------------------------- @@@@38225.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!willis1.cis.uab.edu!nntp.msstate.edu!Ra.MsState.Edu!trb3 From: trb3@Ra.MsState.Edu (Tony R. Boutwell) Subject: HOT NEW 3D Software Message-ID: <trb3.734742669@Ra.MsState.Edu> Keywords: Imagine,3d Sender: news@ra.msstate.edu Nntp-Posting-Host: ra.msstate.edu Organization: Mississippi State University Date: Tue, 13 Apr 1993 23:11:09 GMT Lines: 20 There is a new product for the (IBM'ers) out there... it is called IMAGINE and it just started shipping yesterday... I can personally attest that it will blow the doors off of 3D-Studio. It is made by IMPUlSE, and is in its 3rd version....(1st) for the IBM.... it can do morphing, your standard key-framming animation, it is a raytracer (reflections & shadows), and can do/apply special FX to objects... (like ripple, explode, bounce) things of that nature. Also it has algorithmic texture maps....and your standard brushmapping also... you can have animated brushmaps...(ie. live video mapped on the objs)... also animated backdrops (ie. live video backgrounds) also animted reflections maps.... you get the idea.... it will run for about 500$ retail (I think)... dont let the low price fool you.... this product can do it all when it comes to 3D-animation and Renderering...! also....does anyone here know how to get in the Imagine mailing list?? please e-mail me if you do or post up here.... oh...the number for IMPULSE is --->1 800 328 0184 trb3@ra.msstate.edu @@@@38226.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usenet.ins.cwru.edu!po.CWRU.Edu!mbc From: mbc@po.CWRU.Edu (Michael B. Comet) Subject: Re: HOT NEW 3D Software Date: 14 Apr 1993 00:27:32 GMT Organization: Case Western Reserve University, Cleveland, OH (USA) Lines: 34 Message-ID: <1qflpk$re1@usenet.INS.CWRU.Edu> References: <trb3.734742669@Ra.MsState.Edu> Reply-To: mbc@po.CWRU.Edu (Michael B. Comet) NNTP-Posting-Host: thor.ins.cwru.edu In a previous article, trb3@Ra.MsState.Edu (Tony R. Boutwell) says: >There is a new product for the (IBM'ers) out there... it is called >IMAGINE and it just started shipping yesterday... I can personally attest that it will blow the doors off of 3D-Studio. It is made by IMPUlSE, and is in its > Well....I don't know about its competing with 3D studio, but it's pretty powerful allright. > >also....does anyone here know how to get in the Imagine mailing list?? >please e-mail me if you do or post up here.... > Yes, send e-mail to: imagine-request@email.sp.paramax.com With a header of something like subscribe. I actually work on the FAQ (frequently asked questions). We should have the new version out of it by next week, but if you want, I could e-mail you the previous one. It details what the list is etc... as well as answering basic questions about Imagine. Hope this helps! -- +======================================================================+ | Michael B. Comet - Software Engineer / Graphics Artist - CWRU | | mbc@po.CWRU.Edu - "Silence those who oppose the freedom of speech" | +======================================================================+ @@@@38227.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!news-feed-1.peachnet.edu!umn.edu!student.tc.umn.edu!dutc0006 From: dutc0006@student.tc.umn.edu (David J Dutcher-1) Subject: Re: VGA 640x400 graphics mode Message-ID: <C5G7qB.BMp@news2.cis.umn.edu> Sender: news@news2.cis.umn.edu (Usenet News Administration) Nntp-Posting-Host: student.tc.umn.edu Organization: University of Minnesota References: <C55DoH.2AI@constellation.ecn.uoknor.edu> <734553308snx@rjck.UUCP> Date: Wed, 14 Apr 1993 00:51:45 GMT Lines: 23 In article <734553308snx@rjck.UUCP> rob@rjck.UUCP (Robert J.C. Kyanko) writes: >gchen@essex.ecn.uoknor.edu writes in article <C55DoH.2AI@constellation.ecn.uoknor.edu>: >> >> Greetings! >> >> Does anybody know if it is possible to set VGA graphics mode to 640x400 >> instead of 640x480? Any info is appreciated! > >Some VESA bios's support this mode (0x100). And *any* VGA should be able to >support this (640x480 by 256 colors) since it only requires 256,000 bytes. >My 8514/a VESA TSR supports this; it's the only VESA mode by card can support >due to 8514/a restrictions. (A WD/Paradise) > >-- >I am not responsible for anything I do or say -- I'm just an opinion. > Robert J.C. Kyanko (rob@rjck.UUCP) Ahh no. Possibly you punched in the wrong numbers on your calculator. 256 color modes take a byte per pixel so 640 time 480 is 307,200 which is 300k to be exact. 640x400x256 only takes 250k but I don't think it is a BIOS mode. I wouldn't bet that all VGA cards can do that either. If a VGA card has 512k I bet it can do both 640x400 and 640x480. That by definition is SVGA, though not very high SVGA. @@@@38228.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!sol.ctr.columbia.edu!destroyer!ncar!vexcel!copper!cudnvr!pvconway From: pvconway@cudnvr.denver.colorado.edu Subject: TIN files & coutours Message-ID: <1993Apr13.180954.1@cudnvr.denver.colorado.edu> Date: 13 Apr 93 18:02:54 GMT Sender: netnews@copper.denver.colorado.edu Lines: 15 Hi! I am working on a project that needs to create contour lines from random data points. The work that I have done so far tells me that I need to look into Triangulated Irregular Networks (TIN), the Delauney criiterion, and the Krige method. Does anyone have any suggestions for references, programs and hopefully source code for creating contours. Any help with this or any surface modeling would be greatly appreciated. I can be reached at the addresses below: -- Paul Conway PVCONWAY@COPPER.DENVER.COLORADO.EDU PVCONWAY@CUDNVR.DENVER.COLORADO.EDU @@@@38229.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!utcsri!dgp.toronto.edu!mccool From: mccool@dgp.toronto.edu (Michael McCool) Subject: Apr 20 Toronto Siggraph Event Message-ID: <1993Apr13.230334.13380@jarvis.csri.toronto.edu> Organization: University of Toronto Dynamic Graphics Project Distribution: na Date: 14 Apr 93 03:03:34 GMT Lines: 48 Toronto Siggraph ================ What: ``Chance's Art'': 2D Graphics and Animation on the Indigo. By: Ken Evans, Imagicians Artware, Inc. When: Tuesday 20 April 1993 7:00pm-9:00pm Where: The McLuhan Centre for Culture and Technology University of Toronto 39A Queen's Park Crescent Toronto Who: Members and non-members alike (non-members encouraged to become members...) Abstract: Imagicians Artware, Inc. is entering into early beta site testing on Silicon Graphics workstations of a new 2D abstract artwork and animation package called Chance's Art. The package will be described and demonstrated, and some of the technical issues will be discussed. Marketing plans will be outlined. The talk will also present some of the technical and business problems increasingly confronting small startup software companies today, and some of the opportunities this situation presents. Time after the event will be allocated for hands-on demonstrations to interested parties. Silicon Graphics is graciously providing an Indigo for this event. Myck Kupka will also be demonstrating his computerized interactive reflective stereoscope, which is installed upstairs in the McLuhan Centre, so feel free to drop by for a demonstration before or after the event. BTW, be sure to sing "Happy Birthday, Myck"... The names of nominees for our Siggraph executive offices will be announced at this meeting. Nominations will still be open until the election at our May 18th event; call Myck Kupka at 465-0943 or fax to 465-0729. Directions: The McLuhan Coachhouse is on the east side of Queen's Park Crescent, just NORTH of Wellesley, SOUTH of St. Joseph St., BEHIND (EAST of) 39 Queen's Park Crescent, which is the centre for Mediaeval Studies. For information on Toronto Siggraph membership, contact Michael McCool via: Internet: mccool@dgp.utoronto.ca; Voice: 652-8072/978-6619/978-6027; Fax: 653-1654 @@@@38230.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!agate!dog.ee.lbl.gov!network.ucsd.edu!munnari.oz.au!uniwa!usenet From: Dave Watson <watson@maths.uwa.edu.au> Subject: Re: Delaunay Triangulation Date: 14 Apr 1993 01:26:19 GMT Organization: The University of Western Australia Lines: 29 Distribution: world Message-ID: <1qfp7r$kau@uniwa.uwa.oz.au> References: <lsk1v9INN93c@caspian.usc.edu> Reply-To: watson@maths.uwa.edu.au NNTP-Posting-Host: madvax.maths.uwa.oz.au zyeh@caspian.usc.edu (zhenghao yeh) writes: >Does anybody know what Delaunay Triangulation is? >Is there any reference to it? The Delaunay triangulation is the geometrical dual of the Voronoi tessellation and both constructions are derived from natural neighbor order. Aurenhammer, F., 1991, Voronoi Diagrams - A Survey of a Fundamental Geometric Data Structure: ACM Computing Surveys, 23(3), p. 345-405. Okabe, A., Boots, B., and Sugihara, K., 1992, Spatial tessellations : concepts and applications of Voronoi diagrams: Wiley & Sons, New York, ISBN 0 471 93430 5, 532p. Watson, D.F., 1981, Computing the n-dimensional Delaunay tessellation with application to Voronoi polytopes: The Computer J., 24(2), p. 167-172.} Watson, D.F., 1985, Natural neighbour sorting: The Australian Computer J., 17(4), p. 189-193. -- Dave Watson Internet: watson@maths.uwa.edu.au Department of Mathematics The University of Western Australia Tel: (61 9) 380 3359 Nedlands, WA 6009 Australia. FAX: (61 9) 380 1028 @@@@38231.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!magnus.acs.ohio-state.edu!bgsuvax!att!cbnewsi!hrs1 From: hrs1@cbnewsi.cb.att.com (herman.r.silbiger) Subject: ANSI/AIIM MS-53 Standard Image File Format Organization: AT&T Date: Wed, 14 Apr 1993 03:07:59 GMT Message-ID: <1993Apr14.030759.15927@cbnewsi.cb.att.com> Followup-To: comp.dcom.fax Keywords: image, file format Lines: 6 wing the suggestion of Stu Lynne, I have posted the Image File Format executable and source code to alt.sources. Herman Silbiger . @@@@38232.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!darwin.sura.net!news-feed-1.peachnet.edu!umn.edu!lynx.unm.edu!mimbres.cs.unm.edu!nmt.edu!ccraig From: ccraig@nmt.edu (Catherine Craig) Subject: Re: Trying to view POV files..... Message-ID: <1993Apr13.035924.23329@nmt.edu> Sender: ccraig@titan.nmt.edu Organization: New Mexico Tech References: <1993Apr11.132604.13400@ornl.gov> Date: Tue, 13 Apr 1993 03:59:24 GMT Lines: 23 In article <1993Apr11.132604.13400@ornl.gov> ednobles@sacam.OREN.ORTN.EDU (Edward d Nobles) writes: > >I've been trying to view .tga files created in POVRAY. I have the Diamond >SpeedStar 24 Video board (not the _24X_). So far I can convert them to >jpeg using cjpeg and view them with CVIEW but that only displays 8 bit color. > >I'm looking for some way to convert and/or view them in 24 bit. > > >Just want to see the darn things in real color... > >Thanks, > >Jim Nobles > The best program I've seen for viewing such files is VPIC. You'll want version 5.9 or later. (6.0x is current.) It allows you to view in 15 and 24 bit modes. It really is QUITE nice. Now, for a return question: Do you run Windows? If so, what are the dates on your drivers? The newest ones *I* can find are from around 4-??-92!! My problem is they conflict with Star Trek: After Dark, and other things as well. I'm willing to bet that it's the drivers, and NOT the programs. Anyone out there have info on newer SS24 (NOT X) drivers for windows or OS/2? Thanks, Justin @@@@38233.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!munnari.oz.au!bruce.cs.monash.edu.au!labtam!graeme From: graeme@labtam.labtam.oz.au (Graeme Gill) Subject: Re: looking for circle algorithm faster than Bresenhams Organization: Labtam Australia Pty. Ltd., Melbourne, Australia Date: Wed, 14 Apr 1993 04:49:46 GMT Message-ID: <1993Apr14.044946.12144@labtam.labtam.oz.au> References: <1q5r5g$rsf@uniwa.uwa.oz.au> <2843@usna.navy.mil> <1993Apr13.025240.8884@nwnexus.WA.COM> Lines: 28 In article <1993Apr13.025240.8884@nwnexus.WA.COM>, mpdillon@halcyon.com (Michael Dillon) writes: > I have an algorithm similar to Bresenhams line drawing algorithm, that > draws a line by stepping along the minor axis and drawing slices like > AAAA, BBBB, CCCC in the following diagram. > > AAAA > BBBB > CCCC > Yes, that's known as "Bresenhams Run Length Slice Algorithm for Incremental lines". See Fundamental Algorithms for Computer Graphics, Springer-Verlag, Berlin Heidelberg 1985. > I have tried to extrapolate this to circles but I can't figure out > how to determine the length of the slices. Any ideas? Hmm. I don't think I can help you with this, but you might take a look at the following: "Double-Step Incremental Generation of Lines and Circles", X. Wu and J. G. Rokne, Computer Graphics and Image processing, Vol 37, No. 4, Mar. 1987, pp. 331-334 "Double-Step Generation of Ellipses", X. Wu and J. G. Rokne, IEEE Computer Graphics & Applications, May 1989, pp. 56-69 Graeme Gill. @@@@38234.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!nic.csu.net!eis.CalState.EDU!gmontem Subject: E-mail of Michael Abrash? Message-ID: <C5G6BL.C1D@eis.calstate.edu> From: gmontem@eis.calstate.edu (George A. Montemayor) Date: Wed, 14 Apr 1993 00:21:20 GMT Organization: Calif State Univ/Electronic Information Services Lines: 0 @@@@38235.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!cs.utexas.edu!uunet!munnari.oz.au!mel.dit.csiro.au!its.csiro.au!dmssyd.syd.dms.CSIRO.AU!metro!news.cs.uow.edu.au!news.cs.uow.edu.au!not-for-mail From: g9134255@wampyr.cc.uow.edu.au (Coronado Emmanuel Abad) Subject: Fonts in POV?? Date: 14 Apr 1993 16:03:24 +1000 Organization: University of Wollongong, NSW, Australia. Lines: 11 Message-ID: <1qg9fc$et9@wampyr.cc.uow.edu.au> NNTP-Posting-Host: wampyr.cc.uow.edu.au Keywords: fonts, raytrace I have seen several ray-traced scenes (from MTV or was it RayShade??) with stroked fonts appearing as objects in the image. The fonts/chars had color, depth and even textures associated with them. Now I was wondering, is it possible to do the same in POV?? Thanks, Noel @@@@38236.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!newsserver.jvnc.net!gmd.de!rrz.uni-koeln.de!rrz.uni-koeln.de!lm001 From: lm001@rrz.Uni-Koeln.DE (Erwin H. Keeve) Subject: Polygon Reduction for Marching Cubes Date: 14 Apr 1993 07:45:06 GMT Organization: Regional Computing Center, University of Cologne Lines: 36 Distribution: world Message-ID: <1qgfe2INN1kj7@rs1.rrz.Uni-Koeln.DE> NNTP-Posting-Host: rs1.rrz.uni-koeln.de Keywords: Polygon Reduction, Marching Cubes, Surfaces, Midical Visualisation Dear Reader, I'am searching for an implementation of a polygon reduction algorithm for marching cubes surfaces. I think the best one is the reduction algorithm from Schroeder et al., SIGGRAPH '92. So, is there any implementation of this algorithm, it would be very nice if you could leave it to me. Also I'am looking for a fast !!! connectivity test for marching cubes surfaces. Any help or hints will be very useful. Thanks a lot ,,, (o o) ___________________________________________oOO__(-)__OOo_____________ |___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|_| |_|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___| | | | | Erwin Keeve | adress: Peter-Welter-Platz 2 | | | W-5000 Cologne 1, Germany | | | | | Dept. of Computergraphics & | phone: +49-221-20189-132 (-192) | | Computeranimation | FAX: +49-221-20189-17 | | | | | Academy of Media Arts Cologne | Email: keeve@khm.uni-koeln.de | |_______________________________|_____________________________________| @@@@38237.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!math.fu-berlin.de!informatik.tu-muenchen.de!regent!seneca!stefan From: stefan@lis.e-technik.tu-muenchen.de (Stefan Eckart) Subject: dmpeg10.zip info: Another DOS MPEG decoder/player posted Message-ID: <stefan.734777594@seneca> Followup-To: alt.graphics.pixutils Keywords: MPEG, DOS Sender: news@regent.e-technik.tu-muenchen.de (News System.) Reply-To: stefan@lis.e-technik.tu-muenchen.de Organization: Technische Universitaet Muenchen, Germany Date: Wed, 14 Apr 1993 08:53:14 GMT Lines: 74 I have posted a DOS MPEG decoder/player to alt.binaries.pictures.utilities. Here is a short description and some technical information, taken from the accompanying documentation: DMPEG V1.0 Public Domain MPEG decoder by Stefan Eckart 0. Features =========== DMPEG/DMPLAY is another MPEG decoder/player for the PC: - decodes (nearly) the full MPEG video standard (I,P,B frames, frame size up to at least 352x240 supported) - saves decoded sequence in 8 or 24bit raw file for later display - optional on-screen display during decoding (requires VGA) - several dithering options: ordered dither, Floyd-Steinberg, grayscale - color-space selection - runs under DOS, 640KB RAM, no MS-Windows required - very compact (small code / small data models, 16 bit arithmetic) - real time display of the raw file by a separate player for VGA and many Super-VGAs ... 4. Technical information ======================== The player is a rather straightforward implementation of the MPEG spec [1]. The IDCT is based on the Chen-Wang 13 multiplication algorithm [2] (not quite the optimum, I know). Blocks with not more than eight non-zero coefficients use a non-separated direct multiply-accumulate 2D-IDCT (sounds great, doesn't it?), which turned out to be faster than a 'fast' algorithm in this (quite common) case. Dithering is pretty standard. Main difference to the Berkeley decoder (except for the fewer number of supported algorithms) is the use of 256 instead of 128 colors, the (default) option to use a restricted color-space and the implementation of a color saturation dominant ordered dither. This leads to a significantly superior quality of the dithered image (I claim, judge yourself). Restricted color-space means that the U and V components are clipped to +/-0.25 (instead of +/-0.5) and the display color-space points are distributed over this restricted space. Since the distance between color-space points is thus reduced by a factor of two, the color resolution is doubled at the expense of not being able to represent fully saturated colors. Saturation dominant ordered dither is a method by which a color, lying somewhere between the points of the display color space, is approximated by primarily alternating between two points of constant hue instead of constant saturation. This yields subjectivly better quality due to the lower sensitivity of the human viewing system to saturation changes than to hue changes (the same reasoning as used by the PAL TV standard to improve on NTSC). The improvement is particularly visible in dark brown or redish areas. ... -- Stefan Eckart, stefan@lis.e-technik.tu-muenchen.de @@@@38238.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!spool.mu.edu!cass.ma02.bull.com!pluto.uk03.bull.co.uk!scrowe From: scrowe@hemel.bull.co.uk (Simon Crowe) Subject: Point within a polygon Message-ID: <1993Apr14.102007.20664@uk03.bull.co.uk> Summary: Algorithm to find if a point is bound by a polygon Keywords: point, polygon Sender: @uk03.bull.co.uk Nntp-Posting-Host: bogart Organization: Bull HN UK Date: Wed, 14 Apr 93 10:20:07 GMT Lines: 7 I am looking for an algorithm to determine if a given point is bound by a polygon. Does anyone have any such code or a reference to book containing information on the subject ? Regards Simon @@@@38239.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!pipex!bnr.co.uk!uknet!uknet!nessie!goshawk!john From: john@goshawk.mcc.ac.uk (John Heaton) Subject: POV reboots PC after memory upgrade Message-ID: <1993Apr14.130612.8719@nessie.mcc.ac.uk> Date: 14 Apr 93 13:06:12 GMT Sender: news@nessie.mcc.ac.uk (Usenet News System) Reply-To: john@nessie.mcc.ac.uk Organization: MCC Network Unit Lines: 13 Up until last week, I have been running POVray v1.0 on my 486/33 under DOS5 without any major problems. Over Easter I increased the memory from 4Meg to 8Meg, and found that POVray reboots the system every time under DOS5. I had a go at running POVray in a DOS window when running Win3.1 on the same system and it now works fine, even if a lot slower. I would like to go back to using POVray directly under DOS, anyone any ideas??? John -- John Heaton - NRS Central Administrator MCC Network Unit, The University, Oxford Road, Manchester, M13-9PL Phone: (+44) 61 275 6011 - FAX: (+44) 61 275 6040 Packet: G1YYH @ G1YYH.GB7PWY.#16.GBR.EU @@@@38240.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usenet.ins.cwru.edu!cleveland.Freenet.Edu!af774 From: af774@cleveland.Freenet.Edu (Chad Cipiti) Subject: Good shareware paint and/or animation software for SGI? Date: 14 Apr 1993 13:24:52 GMT Organization: Case Western Reserve University, Cleveland, OH (USA) Lines: 15 Message-ID: <1qh3b5$7nc@usenet.INS.CWRU.Edu> Reply-To: af774@cleveland.Freenet.Edu (Chad Cipiti) NNTP-Posting-Host: hela.ins.cwru.edu Does anyone know of any good shareware animation or paint software for an SGI machine? I've exhausted everyplace on the net I can find and still don't hava a nice piece of software. Thanks alot! Chad -- Knock, knock. Chad Cipiti Who's there? af774@cleveland.freenet.edu cipiti@bobcat.ent.ohiou.edu It might be Heisenberg. chad@voxel.zool.ohiou.edu @@@@38241.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!usenet.ufl.edu!darwin.sura.net!dtix.dt.navy.mil!oasys!hendrix From: hendrix@oasys.dt.navy.mil (Dane Hendrix) Subject: Processing of stereo images Message-ID: <34291@oasys.dt.navy.mil> Date: 14 Apr 93 13:47:10 GMT Reply-To: hendrix@oasys.dt.navy.mil (Dane Hendrix) Followup-To: comp.sys.sgi.graphics Organization: Code 1542, DTMB, Bethesda, MD Lines: 16 I'm interested in find out what is involved in processing pairs of stereo photographs. I have black-and-white photos and would like to obtain surface contours. I'd prefer to do the processing on an SGI, but would be interested in hearing what software/hardware is used for this type of image processing. Please email and/or post to comp.sys.sgi.graphics your responses. Thanks, Dane Hendrix | email: dane@wizard.dt.navy.mil DTMB (a.k.a. Headquarters, Carderock Div.,| or hendrix@oasys.dt.navy.mil Naval Surface Warfare Center) | or hendrix@nas.nasa.gov Code 1542, Bethesda, MD 20084-5000 | phone: (301)227-1340 @@@@38242.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!usenet.ufl.edu!travis.csd.harris.com!grouper.mkt.csd.harris.com!amber!jgreen From: jgreen@amber (Joe Green) Subject: Re: Weitek P9000 ? Date: 14 Apr 1993 13:38:21 GMT Organization: Harris Computer Systems Division Lines: 14 Distribution: world Message-ID: <1qh44d$bf2@grouper.mkt.csd.harris.com> References: <734553652snx@rjck.UUCP> NNTP-Posting-Host: amber.ssd.csd.harris.com X-Newsreader: TIN [version 1.1 PL9] Robert J.C. Kyanko (rob@rjck.UUCP) wrote: > abraxis@iastate.edu writes in article <abraxis.734340159@class1.iastate.edu>: > > Anyone know about the Weitek P9000 graphics chip? > As far as the low-level stuff goes, it looks pretty nice. It's got this > quadrilateral fill command that requires just the four points. Do you have Weitek's address/phone number? I'd like to get some information about this chip. -- Joe Green Harris Corporation jgreen@csd.harris.com Computer Systems Division "The only thing that really scares me is a person with no sense of humor." -- Jonathan Winters @@@@38243.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!agate!ames!sgi!wdl1!mail!kreyling From: kreyling@lds.loral.com (Ed Kreyling 6966) Subject: Sun-os and 8bit ASCII graphics Message-ID: <1993Apr14.133027.28108@lds.loral.com> Organization: Loral Data Systems Distribution: comp.graphics Date: Wed, 14 Apr 1993 13:30:27 GMT Lines: 7 I would like to know if anyone has had any luck using the upper 128 ASCII characters on a Sun station. I am trying to convert a fortran program to run on a Sun. When we write character buffers to the Sun which contain char(218) or char(196) or char(197) etc. We get characters on the screen but they are not the characters in the standard ASCII tables. Any ideas or help will be appreciated. @@@@38244.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!spool.mu.edu!torn!newshost.uwo.ca!newshost.uwo.ca!clipper From: clipper@mccarthy.csd.uwo.ca (Khun Yee Fung) Subject: Re: looking for circle algorithm faster than Bresenhams Organization: Department of Computer Science, The University of Western Ontario, London, Ontario, Canada Date: Wed, 14 Apr 1993 14:27:17 GMT Message-ID: <CLIPPER.93Apr14102713@mccarthy.csd.uwo.ca> In-Reply-To: graeme@labtam.labtam.oz.au's message of Wed, 14 Apr 1993 04:49:46 GMT References: <1q5r5g$rsf@uniwa.uwa.oz.au> <2843@usna.navy.mil> <1993Apr13.025240.8884@nwnexus.WA.COM> <1993Apr14.044946.12144@labtam.labtam.oz.au> Sender: news@julian.uwo.ca (USENET News System) Nntp-Posting-Host: mccarthy.csd.uwo.ca Lines: 41 >>>>> On Wed, 14 Apr 1993 04:49:46 GMT, graeme@labtam.labtam.oz.au (Graeme Gill) said: Graeme> Yes, that's known as "Bresenhams Run Length Slice Algorithm for Graeme> Incremental lines". See Fundamental Algorithms for Computer Graphics, Graeme> Springer-Verlag, Berlin Heidelberg 1985. > I have tried to extrapolate this to circles but I can't figure out > how to determine the length of the slices. Any ideas? Graeme> Hmm. I don't think I can help you with this, but you might Graeme> take a look at the following: Graeme> "Double-Step Incremental Generation of Lines and Circles", Graeme> X. Wu and J. G. Rokne, Computer Graphics and Image processing, Graeme> Vol 37, No. 4, Mar. 1987, pp. 331-334 Graeme> "Double-Step Generation of Ellipses", X. Wu and J. G. Rokne, Graeme> IEEE Computer Graphics & Applications, May 1989, pp. 56-69 Another paper you might want to consider is: @article{fungdraw, title="A Run-Length Slice Line Drawing Algorithm without Division Operations", author="Khun Yee Fung and Tina M. Nicholl and A. K. Dewdney", journal="Computer Graphics Forum", year=1992, volume=11, number=3, pages="C-267--C-277" } Khun Yee -- Khun Yee Fung clipper@csd.uwo.ca Department of Computer Science Middlesex College University of Western Ontario London, Ontario Canada N6A 5B7 Tel: (519) 661-6889 Fax: (519) 661-3515 @@@@38245.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!darwin.sura.net!jhunix.hcf.jhu.edu!jhunix.hcf.jhu.edu!not-for-mail From: msc_wdqn@jhunix.hcf.jhu.edu (Daniel Q Naiman) Subject: Geometry package Date: 14 Apr 1993 10:42:54 -0400 Organization: Homewood Academic Computing, Johns Hopkins University, Baltimore, Md, USA Lines: 11 Distribution: world Message-ID: <1qh7teINN7bi@jhunix.hcf.jhu.edu> NNTP-Posting-Host: jhunix.hcf.jhu.edu I am looking for a package which takes as inputs a set of geometric objects defined by unions of convex polytopes specified in some manner, say by inequalities and equalities, and determines in some reasonable form things like intersections, unions, etc. etc.. Does anyone know where I can find such a thing? Dan Naiman Department of Mathematical Sciences Johns Hopkins University @@@@38246.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!agate!dog.ee.lbl.gov!network.ucsd.edu!ivem.ucsd.edu!spl From: spl@ivem.ucsd.edu (Steve Lamont) Subject: Re: Point within a polygon Date: 14 Apr 1993 16:06:04 GMT Organization: University of Calif., San Diego/Microscopy and Imaging Resource Lines: 15 Message-ID: <1qhcpc$i3i@network.ucsd.edu> References: <1993Apr14.102007.20664@uk03.bull.co.uk> NNTP-Posting-Host: ivem.ucsd.edu Keywords: point, polygon In article <1993Apr14.102007.20664@uk03.bull.co.uk> scrowe@hemel.bull.co.uk (Simon Crowe) writes: >I am looking for an algorithm to determine if a given point is bound by a >polygon. Does anyone have any such code or a reference to book containing >information on the subject ? See the article "An Efficient Ray-Polygon Intersection," p. 390 in Graphics Gems (ISBN 0-12-286165-5). The second step, intersecting the polygon, does what you want. There is sample code in the book. spl -- Steve Lamont, SciViGuy -- (619) 534-7968 -- spl@szechuan.ucsd.edu San Diego Microscopy and Imaging Resource/UC San Diego/La Jolla, CA 92093-0608 "They are not Bolsheviks, just bullshitviks." - Yevgeny Yevtechenko, "Again a meeting..." @@@@38247.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!mcsun!sun4nl!wtrlnd!oeinck.waterland.wlink.nl!ferdinan From: ferdinan@oeinck.waterland.wlink.nl (Ferdinand Oeinck) Subject: Re: Distance between two Bezier curves Message-ID: <eN0R2B3w165w@oeinck.waterland.wlink.nl> Date: Wed, 14 Apr 93 14:02:49 CET References: <1993Apr13.124727.4172@nntp.hut.fi> Organization: My own node in Groningen, NL. Lines: 14 pes@hutcs.cs.hut.fi (Pekka Siltanen) writes: > Suppose two cubic Bezier curves (control points V1,..,V4 and W1,..,W4) > which have equal first and last control points (V1 = W1, V4 = W4). How do I > get upper bound for distance between these curves. Which distance? The distance between one point (t = ti) on the first curve and a point on the other curve with same parameter (u = ti)? > > Any references appreciated. Thanks in anvance. > > Pekka Siltanen @@@@38248.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!mcsun!sunic!liuida!isy!jonas-y From: jonas-y@isy.liu.se (Jonas Yngvesson) Subject: Re: Point within a polygon Message-ID: <jonas-y.734802983@gouraud> Keywords: point, polygon Sender: news@isy.liu.se (Lord of the News) Organization: Dept of EE, University of Linkoping References: <1993Apr14.102007.20664@uk03.bull.co.uk> Date: 14 Apr 93 15:56:23 GMT Lines: 129 scrowe@hemel.bull.co.uk (Simon Crowe) writes: >I am looking for an algorithm to determine if a given point is bound by a >polygon. Does anyone have any such code or a reference to book containing >information on the subject ? Well, it's been a while since this was discussed so i take the liberty of reprinting (without permission, so sue me) Eric Haines reprint of the very interesting discussion of this topic... /Jonas O / \ O ------------------------- X snip snip X ------------------------------ O \ / O "Give a man a fish, and he'll eat one day. Give a man a fishing rod, and he'll laze around fishing and never do anything." With that in mind, I reprint (without permission, so sue me) relevant information posted some years ago on this very problem. Note the early use of PostScript technology, predating many of this year's papers listed in the April 1st SIGGRAPH Program Announcement posted here a few days ago. -- Eric Intersection Between a Line and a Polygon (UNDECIDABLE??), by Dave Baraff, Tom Duff From: deb@charisma.graphics.cornell.edu Keywords: P, NP, Jordan curve separation, Ursyhon Metrization Theorem Organization: Program of Computer Graphics In article [...] ncsmith@ndsuvax.UUCP (Timothy Lyle Smith) writes: > > I need to find a formula/algorithm to determine if a line intersects > a polygon. I would prefer a method that would do this in as little > time as possible. I need this for use in a forward raytracing > program. I think that this is a very difficult problem. To start with, lines and polygons are semi-algebraic sets which both contain uncountable number of points. Here are a few off-the-cuff ideas. First, we need to check if the line and the polygon are separated. Now, the Jordan curve separation theorem says that the polygon divides the plane into exactly two open (and thus non-compact) regions. Thus, the line lies completely inside the polygon, the line lies completely outside the polygon, or possibly (but this will rarely happen) the line intersects the polyon. Now, the phrasing of this question says "if a line intersects a polygon", so this is a decision problem. One possibility (the decision model approach) is to reduce the question to some other (well known) problem Q, and then try to solve Q. An answer to Q gives an answer to the original decision problem. In recent years, many geometric problems have been successfully modeled in a new language called PostScript. (See "PostScript Language", by Adobe Systems Incorporated, ISBN # 0-201-10179-3, co. 1985). So, given a line L and a polygon P, we can write a PostScript program that draws the line L and the polygon P, and then "outputs" the answer. By "output", we mean the program executes a command called "showpage", which actually prints a page of paper containing the line and the polygon. A quick examination of the paper provides an answer to the reduced problem Q, and thus the original problem. There are two small problems with this approach. (1) There is an infinite number of ways to encode L and P into the reduced problem Q. So, we will be forced to invoke the Axiom of Choice (or equivalently, Zorn's Lemma). But the use of the Axiom of Choice is not regarded in a very serious light these days. (2) More importantly, the question arises as to whether or not the PostScript program Q will actually output a piece of paper; or in other words, will it halt? Now, PostScript is expressive enough to encode everything that a Turing Machine might do; thus the halting problem (for PostScript) is undecidable. It is quite possible that the original problem will turn out to be undecidable. I won't even begin to go into other difficulties, such as aliasing, finite precision and running out of ink, paper or both. A couple of references might be: 1. Principia Mathematica. Newton, I. Cambridge University Press, Cambridge, England. (Sorry, I don't have an ISBN# for this). 2. An Introduction to Automata Theory, Languages, and Computation. Hopcroft, J and Ulman, J. 3. The C Programming Language. Kernighan, B and Ritchie, D. 4. A Tale of Two Cities. Dickens, C. -------- From: td@alice.UUCP (Tom Duff) Summary: Overkill. Organization: AT&T Bell Laboratories, Murray Hill NJ The situation is not nearly as bleak as Baraff suggests (he should know better, he's hung around The Labs for long enough). By the well known Dobbin-Dullman reduction (see J. Dullman & D. Dobbin, J. Comp. Obfusc. 37,ii: pp. 33-947, lemma 17(a)) line-polygon intersection can be reduced to Hamiltonian Circuit, without(!) the use of Grobner bases, so LPI (to coin an acronym) is probably only NP-complete. Besides, Turing-completeness will no longer be a problem once our Cray-3 is delivered, since it will be able to complete an infinite loop in 4 milliseconds (with scatter-gather.) -------- From: deb@svax.cs.cornell.edu (David Baraff) Well, sure its no worse than NP-complete, but that's ONLY if you restrict yourself to the case where the line satisfies a Lipschitz condition on its second derivative. (I think there's an '89 SIGGRAPH paper from Caltech that deals with this). -- ------------------------------------------------------------------------------ J o n a s Y n g v e s s o n email: jonas-y@isy.liu.se Dept. of Electrical Engineering voice: +46-(0)13-282162 University of Linkoping, Sweden fax : +46-(0)13-139282 @@@@38249.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!darwin.sura.net!zaphod.mps.ohio-state.edu!usc!zyeh From: zyeh@caspian.usc.edu (zhenghao yeh) Subject: Re: Point within a polygon Date: 14 Apr 1993 11:04:06 -0700 Organization: University of Southern California, Los Angeles, CA Lines: 28 Sender: zyeh@caspian.usc.edu (zhenghao yeh) Distribution: world Message-ID: <lsokgmINN9k4@caspian.usc.edu> References: <1993Apr14.102007.20664@uk03.bull.co.uk> NNTP-Posting-Host: caspian.usc.edu Keywords: point, polygon In article <1993Apr14.102007.20664@uk03.bull.co.uk>, scrowe@hemel.bull.co.uk (Simon Crowe) writes: |> I am looking for an algorithm to determine if a given point is bound by a |> polygon. Does anyone have any such code or a reference to book containing |> information on the subject ? |> |> Regards |> |> Simon Basically, there are two algorithms determining whether a point is inside, outside or on the polygon. The first one is Ray (or half line) method. In this method, you can draw any ray, if the number of the intersection point of the ray and the polygon is even, then it is outside. If the number is odd, then it is inside. Of cause, you have to deal with the special cases which may make you headache. The second method is PI algorithm. Draw the lines between the point and all the vertices on the polygon. Calculate and sum the angles of the successive lines. If the result is 2*PI, then it is inside. If PI, then it is on the polygon. Otherwise it is outside. My experience tells the second method is relible. Hope this helps. Yeh USC @@@@38250.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!darwin.sura.net!zaphod.mps.ohio-state.edu!sdd.hp.com!cs.utexas.edu!geraldo.cc.utexas.edu!portal.austin.ibm.com!awdprime.austin.ibm.com!channui From: channui@austin.ibm.com (Christopher Chan-Nui) Subject: Re: Two pointing devices in one COM-port? Sender: news@austin.ibm.com (News id) Message-ID: <C5HIr4.CwH@austin.ibm.com> Date: Wed, 14 Apr 1993 17:47:28 GMT Reply-To: channui@austin.ibm.com References: <C4v8Ko.BHE@jabba.ess.harris.com> Organization: IBM Austin X-Newsreader: TIN [version 1.1 PL9] Followup-To: comp.graphics,comp.periphs,comp.sys.ibm.pc.hardware Lines: 22 Bob Davis (sonny@trantor.harris-atd.com) wrote: : In article <C4tKGM.1v6@unix.portal.com>, wil@shell.portal.com (Ville V Walveranta) writes: : |> : |> Is there any way to connect two pointing devices to one serial : |> port? I haven't tried this but I believe they would interfere : |> with each other (?) even if only one at a time would be used. : Just get an A-B switch for RS232. Look in Computer Shopper. : They are available fairly cheap. They allow switching between two : serial devices on a single port. Unfortunately the poster wants to use an internal and an external modem so a switch isn't going to help them. If you aren't using your com ports for anything else, just define them on different com ports. Define your internal modem to be say, com1, and your external modem to be com3. You really shouldn't have to worry about interrupt conflicts since you won't be using both modems at the same time :). --- Christopher Chan-Nui | Investment in reliability will increase until it channui@austin.ibm.com | exceeds the probable cost of errors, or until someone #include <disclaimer.h> | insists on getting some useful work done. @@@@38251.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!sample.eng.ohio-state.edu!purdue!mentor.cc.purdue.edu!news From: ab@nova.cc.purdue.edu (Allen B) Subject: Re: Fractals? what good are they? Message-ID: <C5HJzA.JoH@mentor.cc.purdue.edu> Sender: news@mentor.cc.purdue.edu (USENET News) Organization: Purdue University References: <7208@pdxgate.UUCP> Date: Wed, 14 Apr 1993 18:13:57 GMT Lines: 17 In article <7208@pdxgate.UUCP> idr@rigel.cs.pdx.edu (Ian D Romanick) writes: > They talked about another routine that could yield up to 150 to 1 > compress with no image loss that *I* could notice. The draw back is that it > takes a hell of a long time to compress something. I'll have to see if I can > find the book so that I can give more exact numbers. TTYL. That's a typical claim, though they say they've improved compression speed considerably. Did you find out anything else about the book? I'd be interested in looking at it if you could give me any pointers. Reportedly, early fractal compression times of 24-100 hours used that marvelous piece of hardware called "grad students" to do the work. Supposedly it's been automated since about 1988, but I'm still waiting to be impressed. Allen B (Sign me "Cynical") @@@@38252.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!swrinde!zaphod.mps.ohio-state.edu!darwin.sura.net!spool.mu.edu!sol.ctr.columbia.edu!eff!enterpoop.mit.edu!thunder.mcrcim.mcgill.edu!homer.cs.mcgill.ca!clump From: clump@acaps.cs.mcgill.ca (Clark VERBRUGGE) Subject: Re: BGI Drivers for SVGA Message-ID: <C5HIz1.GE3@cs.mcgill.ca> Sender: news@cs.mcgill.ca (Netnews Administrator) Organization: SOCS, McGill University, Montreal, Canada X-Newsreader: TIN [version 1.1 PL8] References: <1993Apr10.092953.19868@uxmail.ust.hk> Date: Wed, 14 Apr 1993 17:52:12 GMT Lines: 29 Dominic Lai (cs_cylai@cs.ust.hk) wrote: : Simon Crowe (scrowe@hemel.bull.co.uk) wrote: : 8~> I require BGI drivers for Super VGA Displays and Super XVGA Displays. Does : 8~> anyone know where I could obtain the relevant drivers ? (FTP sites ??) : I would like to know too! : Regards, : Dominic garbo.uwasa.fi (or one of its many mirrors) has a file called "svgabg40" in the programming subdirectory. These are svga bgi drivers for a variety of cards. [from the README]: "Card types supported: (SuperVGA drivers) Ahead, ATI, Chips & Tech, Everex, Genoa, Paradise, Oak, Trident (both 8800 and 8900, 9000), Tseng (both 3000 and 4000 chipsets) and Video7. These drivers will also work on video cards with VESA capability. The tweaked drivers will work on any register-compatible VGA card." enjoy, Clark Verbrugge clump@cs.mcgill.ca -- HONK HONK BLAT WAK WAK WAK WAK WAK UNGOW! @@@@38253.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!news.ans.net!malgudi.oar.net!zaphod.mps.ohio-state.edu!uunet.ca!canrem!dosgate!dosgate![danny.hawrysio@canrem.com] From: "danny hawrysio" <danny.hawrysio@canrem.com> Subject: windows imagine??!! Message-ID: <1993Apr14.4387.24075@dosgate> Reply-To: "danny hawrysio" <danny.hawrysio@canrem.com> Organization: Canada Remote Systems Distribution: comp Date: 14 Apr 93 14:45:44 EST Lines: 12 -> I have been on the phone with Impulse for about 3 months waiting for -> my cross - platform upgrade (Amiga to IBM). They have told me every -> week for 3 months, "it will be ready next week". Still waiting....... They've been saying that for two years now, you'd think by now people wouldn't go on about it being 'soon' and only believe it when they can buy it. I wish Amiga users wouldn't be so gullible (gasp, how dare he say that!). -- Canada Remote Systems - Toronto, Ontario 416-629-7000/629-7044 @@@@38254.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!news.ans.net!malgudi.oar.net!zaphod.mps.ohio-state.edu!uunet.ca!canrem!dosgate!dosgate![danny.hawrysio@canrem.com] From: "danny hawrysio" <danny.hawrysio@canrem.com> Subject: windows imagine??!! Message-ID: <199314.4387.24074@dosgate> Reply-To: "danny hawrysio" <danny.hawrysio@canrem.com> Organization: Canada Remote Systems Distribution: comp Date: 14 Apr 93 14:45:43 EST Lines: 12 -> I have been on the phone with Impulse for about 3 months waiting for -> my cross - platform upgrade (Amiga to IBM). They have told me every -> week for 3 months, "it will be ready next week". Still waiting....... They've been saying that for two years now, you'd think by now people wouldn't go on about it being 'soon' and only believe it when they can buy it. I wish Amiga users wouldn't be so gullible (gasp, how dare he say that!). -- Canada Remote Systems - Toronto, Ontario 416-629-7000/629-7044 @@@@38255.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!concert!samba!helix!cptully From: cptully@med.unc.edu (Christopher P. Tully,Pathology,62699) Subject: Re: TIFF: philosophical significance of 42 Message-ID: <1993Apr14.191415.10553@samba.oit.unc.edu> Sender: usenet@samba.oit.unc.edu Nntp-Posting-Host: helix.med.unc.edu Reply-To: cptully@med.unc.edu Organization: UNC-CH School of Medicine References: <C5Ft68.8HC@mentor.cc.purdue.edu> Date: Wed, 14 Apr 1993 19:14:15 GMT Lines: 40 In article 8HC@mentor.cc.purdue.edu, ab@nova.cc.purdue.edu (Allen B) writes: >In article <1993Apr10.160929.696@galki.toppoint.de> ulrich@galki.toppoint.de >writes: >> According to the TIFF 5.0 Specification, the TIFF "version number" >> (bytes 2-3) 42 has been chosen for its "deep philosophical >> significance". >> Last week, I read the Hitchhikers Guide To The Galaxy, >> Is this actually how they picked the number 42? > >I'm sure it is, and I am not amused. Every time I read that part of the >TIFF spec, it infuriates me- and I'm none too happy about the >complexity of the spec anyway- because I think their "arbitrary but >carefully chosen number" is neither. Additionally, I find their >choice of 4 bytes to begin a file with meaningless of themselves- why >not just use the letters "TIFF"? > >(And no, I don't think they should have bothered to support both word >orders either- and I've found that many TIFF readers actually >don't.) > >ab Why so up tight? FOr that matter, TIFF6 is out now, so why not gripe about its problems? Also, if its so important to you, volunteer to help define or critique the spec. Finally, a little numerology: 42 is 24 backwards, and TIFF is a 24 bit image format... Chris --- ********************************************************************* Christopher P. Tully cptully@med.unc.edu Univ. of North Carolina - Chapel Hill CB# 7525 (919) 966-2699 Chapel Hill, NC 27599 ********************************************************************* I get paid for my opinions, but that doesn't mean that UNC or anybody else agrees with them. @@@@38256.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!udel!darwin.sura.net!zaphod.mps.ohio-state.edu!uwm.edu!msuinfo!uchinews!raistlin!timbuk.cray.com!walter.cray.com!emm From: emm@tamarack202.cray.com (Mike McConnell) Subject: Interleaf to CGM Message-ID: <1993Apr14.140534.18897@walter.cray.com> Originator: emm@tamarack202 Keywords: Interleaf, CGM, ileaf Lines: 13 Sender: emm@tamarack202 (Mike McConnell) Nntp-Posting-Host: tamarack202.cray.com Organization: Cray Research, Inc. Date: 14 Apr 93 14:05:33 CDT Has anyone successfully converted Interleaf graphics to CGM, or even heard of it being done???? We'd love to hear about it. -Mike McConnell emm@cray.com @@@@38257.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!swrinde!zaphod.mps.ohio-state.edu!uwm.edu!spool.mu.edu!decwrl!olivea!sgigate!odin!fido!deadhead.asd.sgi.com!mogal From: mogal@deadhead.asd.sgi.com (Joshua Mogal) Subject: Re: Hollywood Hits, Virtual Reality Message-ID: <1qhs7l$efb@fido.asd.sgi.com> Date: 14 Apr 93 20:29:41 GMT References: <1993Mar17.185725.13487@relay.nswc.navy.mil> Organization: Silicon Graphics, Inc. Lines: 137 NNTP-Posting-Host: deadhead.asd.sgi.com Sorry I missed you Raymond, I was just out in Dahlgren last month... I'm the Virtual Reality market manager for Silicon Graphics, so perhaps I can help a little. In article <1993Mar17.185725.13487@relay.nswc.navy.mil>, rchui@nswc-wo.nswc.navy.mil (Raymond Chui) writes: |> Hello, the real reality. Our agency started to express interest in |> virtual reality(VR). So far, we do not know much about VR. All we |> know about are the Hollywood movies "The Terminater 2" and "Lawnmover |> Man". We also know something about VR from ABC news magazine and |> Computer Graphics World magazine. Unfortunately, while SGI systems were used to create the special effects for both Terminator 2 and Lawnmower Man, those are film-quality computer graphics, rendered in software and written to film a frame at a time. Each frame of computer animation for those films took hours to render on high-end parallel processing computer systems. Thus, that level of graphics would be difficult, if not impossible, to acheive in real time (30 frames per second). |> |> We certainly want to know more about VR. Who are the leading |> companies, |> agencies, universities? What machines support VR (i.e. SGI, Sun4, |> HP-9000, BIM-6000, etc.)? It depends upon how serious you are and how advanced your application is. True immersive visualization (VR), requires the rendering of complex visual databases at anywhere from 20 to 60 newly rendered frames per second. This is a similar requirement to that of traditional flight simulators for pilot training. If the frame rate is too low, the user notices the stepping of the frames as they move their head rapidly around the scene, so the motion of the graphics is not smooth and contiguous. Thus the graphics system must be powerful enough to sustain high frame rates while rendering complex data representations. Additionally, the frame rate must be constant. If the system renders 15 frames per second at one point, then 60 frames per second the next (perhaps due to the scene in the new viewing direction being simpler than what was visible before), the user can get heavily distracted by the medium (the graphics computer) rather than focusing on the data. To maintain a constant frame rate, the system must be able to run in real-time. UNIX in general does not support real-time operation, but Silicon Graphics has modified the UNIX kernel for its multi-processor systems to be able to support real-time operation, bypassing the usual UNIX process priority-management schemes. Uniprocessor systems running UNIX cannot fundamentally support real-time operation (not Sun SPARC10, not HP 700 Series systems, not IBM RS-6000, not even SGI's uniprocessor systems like Indigo or Crimson). Only our multiprocessor Onyx and Challenge systems support real-time operation due to their Symmetric Multi-Processing (SMP) shared-memory architecture. From a graphics perspective, rendering complex virtual environments requires advanced rendering techniques like texture mapping and real-time multi-sample anti-aliasing. Of all of the general purpose graphics systems on the market today, only Crimson RealityEngine and Onyx RealityEngine2 systems fully support these capabilities. The anti-aliasing is particularly important, as the crawling jagged edges of aliased polygons is an unfortunate distraction when immersed in a virtual environment. |> What kind of graphics languages are used with VR |> (GL, opengl, Phigs, PEX, GKS, etc.)? You can use the general purpose graphics libraries listed above to develop VR applications, but that is starting at a pretty low level. There are off-the- shelf software packages available to get you going much faster, being targeted directly at the VR application developer. Some of the most popular are (in no particular order): - Division Inc. (Redwood City, CA) - dVS - Sens8 Inc. (Sausalito, CA) - WorldToolKit - Naval Postgraduate School (Monterey, CA) - NPSnet (FREE!) - Gemini Technology Corp (Irvine, CA) - GVS Simation Series - Paradigm Simulation Inc. (Dallas, TX) - VisionWorks, AudioWorks - Silicon Graphics Inc. (Mountain View,CA) - IRIS Performer There are some others, but not off the top of my head... |> What companies are making |> interface devices for VR (goggles or BOOM (Binocular Omni-Orientational |> Monitor), hamlets, gloves, arms, etc.)? There are too many to list here, but here is a smattering: - Fake Space Labs (Menlo Park,CA) - BOOM - Virtual Technologies Inc. (Stanford, CA) - CyberGlove - Digital Image Design (New York, NY) - The Cricket (3D input) - Kaiser Electro Optics (Carlsbad, CA) - Sim Eye Helmet Displays - Virtual Research (Sunnyvale, CA) - Flight Helmet display - Virtual Reality Inc. (Pleasantville,NY) - Head Mtd Displays, s/w - Software Systems (San Jose, CA) - 3D Modeling software - etc., etc., etc. |> What are those company's |> addresses and phone numbers? Where we can get a list name of VR |> experts |> and their phone numbers and Email addresses? Read some of the VR books on the market: - Virtual Reality - Ken Pimental and Ken Texiera (sp?) - Virtual Mirage - Artificial Reality - Myron Kreuger - etc. Or check out the newsgroup sci.virtual_worlds Feel free to contact me for more info. Regards, Josh -- ************************************************************************** ** ** ** ** Joshua Mogal ** Product Manager ** ** Advanced Graphics Division ** Advanced Graphics Systems ** ** Silicon Graphics Inc. ** Market Manager ** ** 2011 North Shoreline Blvd. ** Virtual Reality ** ** Mountain View, CA 94039-7311 ** Interactive Entertainment ** ** M/S 9L-580 ** ** ** ************************************* ** Tel: (415) 390-1460 ** ** Fax: (415) 964-8671 ** ** E-mail: mogal@sgi.com ** ** ** ************************************************************************** @@@@38258.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!purdue!mentor.cc.purdue.edu!news From: ab@nova.cc.purdue.edu (Allen B) Subject: Re: Point within a polygon Message-ID: <C5HqIx.n19@mentor.cc.purdue.edu> Keywords: Obfuscated PostScript Sender: news@mentor.cc.purdue.edu (USENET News) Organization: Purdue University References: <jonas-y.734802983@gouraud> Date: Wed, 14 Apr 1993 20:35:20 GMT Lines: 60 In article <jonas-y.734802983@gouraud> jonas-y@isy.liu.se (Jonas Yngvesson) writes: > Intersection Between a Line and a Polygon (UNDECIDABLE??), > by Dave Baraff, Tom Duff > > From: deb@charisma.graphics.cornell.edu > In recent years, many geometric problems have been successfully modeled in a > new language called PostScript. (See "PostScript Language", by Adobe Systems > Incorporated, ISBN # 0-201-10179-3, co. 1985). > > So, given a line L and a polygon P, we can write a PostScript program that > draws the line L and the polygon P, and then "outputs" the answer. By > "output", we mean the program executes a command called "showpage", which > actually prints a page of paper containing the line and the polygon. A quick > examination of the paper provides an answer to the reduced problem Q, and thus > the original problem. Curiously, in modern PostScript, the point in a polygon problem can be solved even more easily. To wit: %! %%Title: Point in Polygon %%Creator: Allen B (ab@cc.purdue.edu) %%For: the amusement of comp.graphics regulars %%LanguageLevel: 2 %%DocumentNeededResource: humor sense thereof %%EndComments % This program will test whether a point is inside a given polygon. % Currently it uses the even-odd rule, but that can be changed by % replacing ineofill with infill. These are Level 2 operators, % so if you've only got Level 1 you're out of luck. % % The result will be printed on the output stream. % % Caution: only accurate to device pixels! % Put a huge scale in first if you aren't sure. % Point to test % PUT X AND Y COORDINATES HERE 50 75 % Vertices of polygon in counter-clockwise order % PUT ARRAY OF PAIRS OF COORDINATES HERE [ [ 0 0 ] [ 100 0 ] [ 100 100 ] [ 67 100 ] [ 67 50 ] [ 33 50 ] [ 33 100 ] [ 0 100 ] ] dup 0 get aload pop moveto dup length 1 dup 3 1 roll sub getinterval { aload pop lineto } forall closepath ineofill { (Yes!) } { (No!) } ifelse = @@@@38259.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!swrinde!zaphod.mps.ohio-state.edu!usc!acsc.com!cpuserver.acsc.com!robert From: robert@cpuserver.acsc.com (Robert Grant) Subject: Virtual Reality for X on the CHEAP! Date: 14 Apr 1993 21:12:07 GMT Organization: USCACSC, Los Angeles Lines: 187 Distribution: world Message-ID: <1qhun7$6po@acsc.com> Reply-To: robert@cpuserver.acsc.com (Robert Grant) NNTP-Posting-Host: cpuserver.acsc.com Hi everyone, I thought that some people may be interested in my VR software on these groups: *******Announcing the release of Multiverse-1.0.2******* Multiverse is a multi-user, non-immersive, X-Windows based Virtual Reality system, primarily focused on entertainment/research. Features: Client-Server based model, using Berkeley Sockets. No limit to the number of users (apart from performance). Generic clients. Customizable servers. Hierachical Objects (allowing attachment of cameras and light sources). Multiple light sources (ambient, point and spot). Objects can have extension code, to handle unique functionality, easily attached. Functionality: Client: The client is built around a 'fast' render loop. Basically it changes things when told to by the server and then renders an image from the user's viewpoint. It also provides the server with information about the user's actions - which can then be communicated to other clients and therefore to other users. The client is designed to be generic - in other words you don't need to develop a new client when you want to enter a new world. This means that resources can be spent on enhancing the client software rather than adapting it. The adaptations, as will be explained in a moment, occur in the servers. This release of the client software supports the following functionality: o Hierarchical Objects (with associated addressing) o Multiple Light Sources and Types (Ambient, Point and Spot) o User Interface Panels o Colour Polygonal Rendering with Phong Shading (optional wireframe for faster frame rates) o Mouse and Keyboard Input (Some people may be disappointed that this software doesn't support the PowerGlove as an input device - this is not because it can't, but because I don't have one! This will, however, be one of the first enhancements!) Server(s): This is where customization can take place. The following basic support is provided in this release for potential world server developers: o Transparent Client Management o Client Message Handling This may not sound like much, but it takes away the headache of accepting and terminating clients and receiving messages from them - the application writer can work with the assumption that things are happening locally. Things get more interesting in the object extension functionality. This is what is provided to allow you to animate your objects: o Server Selectable Extension Installation: What this means is that you can decide which objects have extended functionality in your world. Basically you call the extension initialisers you want. o Event Handler Registration: When you develop extensions for an object you basically write callback functions for the events that you want the object to respond to. (Current events supported: INIT, MOVE, CHANGE, COLLIDE & TERMINATE) o Collision Detection Registration: If you want your object to respond to collision events just provide some basic information to the collision detection management software. Your callback will be activated when a collision occurs. This software is kept separate from the worldServer applications because the application developer wants to build a library of extended objects from which to choose. The following is all you need to make a World Server application: o Provide an initWorld function: This is where you choose what object extensions will be supported, plus any initialization you want to do. o Provide a positionObject function: This is where you determine where to place a new client. o Provide an installWorldObjects function: This is where you load the world (.wld) file for a new client. o Provide a getWorldType function: This is where you tell a new client what persona they should have. o Provide an animateWorld function: This is where you can go wild! At a minimum you should let the objects move (by calling a move function) and let the server sleep for a bit (to avoid outrunning the clients). That's all there is to it! And to prove it here are the line counts for the three world servers I've provided: generic - 81 lines dactyl - 270 lines (more complicated collision detection due to the stairs! Will probably be improved with future versions) dogfight - 72 lines Location: This software is located at the following site: ftp.u.washington.edu Directory: pub/virtual-worlds File: multiverse-1.0.2.tar.Z Futures: Client: o Texture mapping. o More realistic rendering: i.e. Z-Buffering (or similar), Gouraud shading o HMD support. o Etc, etc.... Server: o Physical Modelling (gravity, friction etc). o Enhanced Object Management/Interaction o Etc, etc.... Both: o Improved Comms!!! I hope this provides people with a good understanding of the Multiverse software, unfortunately it comes with practically zero documentation, and I'm not sure whether that will ever be able to be rectified! :-( I hope people enjoy this software and that it is useful in our explorations of the Virtual Universe - I've certainly found fascinating developing it, and I would *LOVE* to add support for the PowerGlove...and an HMD :-)!! Finally one major disclaimer: This is totally amateur code. By that I mean there is no support for this code other than what I, out the kindness of my heart, or you, out of pure desperation, provide. I cannot be held responsible for anything good or bad that may happen through the use of this code - USE IT AT YOUR OWN RISK! Disclaimer over! Of course if you love it, I would like to here from you. And anyone with POSITIVE contributions/criticisms is also encouraged to contact me. Anyone who hates it: > /dev/null! ************************************************************************ ********* And if anyone wants to let me do this for a living: you know where to write :-)! ************************************************************************ ********* Thanks, Robert. robert@acsc.com ^^^^^^^^^^^^^^^ @@@@38260.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!usc!acsc.com!cpuserver.acsc.com!robert From: robert@cpuserver.acsc.com (Robert Grant) Subject: Re: Virtual Reality for X on the CHEAP! Date: 14 Apr 1993 21:56:10 GMT Organization: USCACSC, Los Angeles Lines: 11 Distribution: world Message-ID: <1qi19q$6t2@acsc.com> References: <1qhun7$6po@acsc.com> Reply-To: robert@cpuserver.acsc.com (Robert Grant) NNTP-Posting-Host: cpuserver.acsc.com Update on location!! Directory should be: public/virtual-worlds!! ^^^^^^ Sorry! :-) Robert. robert@acsc.com @@@@38261.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!utnut!nott!cunews!freenet.carleton.ca!Freenet.carleton.ca!ad994 From: ad994@Freenet.carleton.ca (Jason Wiggle) Subject: PCX Message-ID: <1993Apr14.220100.17867@freenet.carleton.ca> Sender: news@freenet.carleton.ca (News Administrator) Organization: National Capital Freenet, Ottawa, Canada Date: Wed, 14 Apr 1993 22:01:00 GMT Lines: 27 Hello HELP!!! please I am a student of turbo c++ and graphics programming and I am having some problems finding algorithms and code to teach me how to do some stuff.. 1) Where is there a book or code that will teach me how to read and write pcx,dbf,and gif files? 2) How do I access the extra ram on my paradise video board so I can do paging in the higher vga modes ie: 320x200x256 800x600x256 3) anybody got a line on a good book to help answer these question? Thanks very much ! send reply's to : Palm@snycanva.bitnet Peace be Blessed be Stephen Palm @@@@38262.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!ux1.cso.uiuc.edu!cywang From: cywang@ux1.cso.uiuc.edu (Crying Freeman) Subject: What's a good assembly VGA programming book? Message-ID: <C5Hwwr.KrH@ux1.cso.uiuc.edu> Organization: University of Illinois at Urbana Date: Wed, 14 Apr 1993 22:53:01 GMT Lines: 9 Can someone give me the title of a good VGA graphics programming book? Please respond by email. Thanks! --Yuan -- Che-Yuan Wang cw21219@uxa.cso.uiuc.edu cywang@ux1.cso.uiuc.edu @@@@38263.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!newsfeed.rice.edu!nb.rockwell.com!davidr From: davidr@rincon.ema.rockwell.com (David J. Ray) Subject: Re: Fractals? what good are they? Message-ID: <1993Apr14.213943.26061@nb.rockwell.com> Sender: news@nb.rockwell.com Organization: Rockwell International X-Newsreader: Tin 1.1 PL5 References: <C5HJzA.JoH@mentor.cc.purdue.edu> Date: Wed, 14 Apr 1993 21:39:43 GMT Lines: 16 In regards to fractal commpression, I have seen 2 fractal compressed "movies". They were both fairly impressive. The first one was a 64 gray scale "movie" of Casablanca, it was 1.3MB and had 11 minutes of 13 fps video. It was a little grainy but not bad at all. The second one I saw was only 3 minutes but it had 8 bit color with 10fps and measured in at 1.2MB. I consider the fractal movies a practical thing to explore. But unlike many other formats out there, you do end up losing resolution. I don't know what kind of software/hardware was used for creating the "movies" I saw but the guy that showed them to me said it took 5-15 minutes per frame to generate. But as I said above playback was 10 or more frames per second. And how else could you put 11 minutes on one floppy disk? davidr@rincon.ema.rockwell.com My opinions are my own except where they are shared by others in which case I will probably change my mind. @@@@38264.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!spool.mu.edu!torn!nott!bnrgate!bnr.co.uk!uknet!mcsun!fuug!kiae!bitcom!kiae!relcom!newsserv From: Ivanov Sergey <serge@argus.msk.su> Subject: Re: Re: VGA 640x400 graphics mode Date: Wed, 14 Apr 93 02:43:57 +0400 Distribution: world Organization: Commercial and Industrial Group ARGUS Message-ID: <AAj8qohe_8@argus.msk.su> Sender: news-service@newcom.kiae.su Reply-To: serge@argus.msk.su References: <734553308snx@rjck.UUCP> Lines: 7 > My 8514/a VESA TSR supports this Can You report CRT and other register state in this mode ? Thank's. Serge Ivanov (serge@argus.msk.su) @@@@38265.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!wupost!sdd.hp.com!elroy.jpl.nasa.gov!usc!zaphod.mps.ohio-state.edu!uwm.edu!ux1.cso.uiuc.edu!news.iastate.edu!pi.eai.iastate.edu!boylan From: boylan@pi.eai.iastate.edu (Terran Boylan) Subject: Reaction-Diffusion techniques Message-ID: <C5I247.8Ar@news.iastate.edu> Sender: news@news.iastate.edu (USENET News System) Organization: Engineering Animation, Inc. Date: Thu, 15 Apr 1993 00:45:40 GMT Lines: 24 This past week I've been playing with some of the R-D (Reaction- Diffusion, not to be confused with RDS or R&D) techniques from SIGGRAPH '91. I was wondering what material is available to explain the control mechanism a little more. It seems to me very much like a matter of picking random magic numbers and sitting back and waiting. Although both of the papers (Turk and Witkin & Kass) were very well organized and extremely helpful, I guess what I need is a more basic description of the technique, especially wrt the control mechanisms. The tests that I did had a tendency to either turn into blurry mud or become unstable. Is there any info available online? Source code would be great but not necessary. Thanks! -- --- Terran J. Boylan, Sr. Artist/Programmer | "It's better to have loved Engineering Animation, Inc., Ames, IA | and lost than just to have (515) 296-9908 / (515) 296-7892 (> 5PM) | lost." -- Dorky Dog @@@@38266.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!pdn!parsec!rjs002c From: rjs002c@parsec.paradyne.com (Robert Synoski) Subject: 24 bit Graphics cards Message-ID: <1993Apr14.215934.17733@pdn.paradyne.com> Sender: usenet@pdn.paradyne.com (News Subsystem) Nntp-Posting-Host: parsec Reply-To: rjs002c@parsec.paradyne.com Organization: AT&T Paradyne, Largo Florida Date: Wed, 14 Apr 1993 21:59:34 GMT Lines: 10 I am looking for EISA or VESA local bus graphic cards that support at least 1024x786x24 resolution. I know Matrox has one, but it is very expensive. All the other cards I know of, that support that resoultion, are striaght ISA. Also are there any X servers for a unix PC that support 24 bits? thanks @@@@38267.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!usenet.ins.cwru.edu!agate!spool.mu.edu!uwm.edu!caen!batcomputer!munnari.oz.au!yoyo.aarnet.edu.au!fang.dsto.gov.au!dls From: dls@aeg.dsto.gov.au (David Silver) Subject: Re: Fractal Generation of Clouds Date: 15 Apr 1993 01:20:22 GMT Organization: Defence Science and Technology Organisation Lines: 14 Message-ID: <1qid8m$31l@fang.dsto.gov.au> References: <1993Apr7.073619.11896@nevada.edu> NNTP-Posting-Host: kestrel.dsto.gov.au haabn@nye.nscee.edu (Frederick J. Haab) writes: >I need to implement an algorithm to fractally generate clouds >as sort of a benchmark for some algorithms I'm working on. Just as a matter of interest, a self-promo computer graphics sequence that one of the local TV stations used to play quite a lot a couple of years ago showed a 3D flyover of Australia from the West coast to the East. The clouds were quite recognisable as fuzzy, flat, white Mandlebrot sets!! David Silver @@@@38268.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!udel!darwin.sura.net!haven.umd.edu!uunet!bcstec!rgc3679 From: rgc3679@bcstec.ca.boeing.com (Robert G. Carpenter) Subject: Please Recommend 3D Graphics Library For Mac. Message-ID: <C5HLoD.2G1@bcstec.ca.boeing.com> Organization: Boeing Computer Services Date: Wed, 14 Apr 1993 18:50:34 GMT Lines: 15 Hi Netters, I'm building a CAD package and need a 3D graphics library that can handle some rudimentry tasks, such as hidden line removal, shading, animation, etc. Can you please offer some recommendations? I'll also need contact info (name, address, email...) if you can find it. Thanks (Please Post Your Responses, in case others have same need) Bob Carpenter @@@@38269.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!network.ucsd.edu!munnari.oz.au!newsroom.utas.edu.au!ccresources6h53.cc.utas.edu.au!user From: kai_h@postoffice.utas.edu.au (Kai Howells) Subject: Re: HOT NEW 3D Software Message-ID: <kai_h-150493121347@ccresources6h53.cc.utas.edu.au> Followup-To: comp.graphics Sender: news@newsroom.utas.edu.au Organization: University of Tasmania (Australia) References: <trb3.734742669@Ra.MsState.Edu> <1qflpk$re1@usenet.INS.CWRU.Edu> Date: Thu, 15 Apr 1993 02:18:29 GMT Lines: 20 In article <1qflpk$re1@usenet.INS.CWRU.Edu>, mbc@po.CWRU.Edu (Michael B. Comet) wrote: > > > In a previous article, trb3@Ra.MsState.Edu (Tony R. Boutwell) says: > > >There is a new product for the (IBM'ers) out there... it is called > >IMAGINE and it just started shipping yesterday... I can personally attest that it will blow the doors off of 3D-Studio. It is made by IMPUlSE, and is in its > > > Well....I don't know about its competing with 3D studio, but > it's pretty powerful allright. Yes but a key issue is _SPEED_ how fast is Imagine? And is it as easy to use as 3D Studio? Can it just do a render as fast as 3DS if you don't want things like IOR etc.. 3DS can do fine shadows, animated reflection maps, animated bump maps, animated anything maps, and with the IPAS routines (Not that I've ever seen them) It can do explosions, top quality morphing, fire, rain, lens flares etc.. I'm not knocking imagine, I just want to know how it compares with 3DS @@@@38270.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!network.ucsd.edu!munnari.oz.au!newsroom.utas.edu.au!franklin.cc.utas.edu.au!u895027 From: u895027@franklin.cc.utas.edu.au (Mark Mackey) Subject: Raytracers: which is best? Message-ID: <u895027.734839921@franklin> Sender: news@newsroom.utas.edu.au Organization: University of Tasmania, Australia. Date: Thu, 15 Apr 1993 02:12:01 GMT Lines: 15 Hi all! I've just recently become seriously hooked on POV, but there are a few thing that I want to do that POV won't do (penumbral shadows, dispersion etc.). I was just wondering: what other shareware/freeware raytracers are out there, and what can they do? I've heard of Vivid and Polyray and Rayshade and so on, but I'd rather no wade through several hundred pages of manual for each trying to work out what their capabilities are. Can anyone help? A comparison of tracing speed between each program would also be mucho useful. Mark. ------------------------------------------------------------------------------- Mark Mackey | Life is a terminal disease and oxygen is mmackey@aqueous.ml.csiro.au | addictive. Are _you_ hooked? ------------------------------------------------------------------------------- @@@@38271.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!sample.eng.ohio-state.edu!purdue!ames!agate!spool.mu.edu!torn!newsserver.cs.uwindsor.ca!petro From: petro@server.uwindsor.ca (PETRO DAVID ) Subject: Shareware Message-ID: <3391@newsserver.cs.uwindsor.ca> Date: 15 Apr 1993 03:15:27 GMT Sender: news@server.uwindsor.ca Distribution: comp.graphics Organization: University of Windsor, Ontario, Canada Lines: 20 Recently I saw the latest Computer Shopper and in it there was an article on nice shareware graphics programs. They looked pretty good and of the 6 listed in the article, one I had (Graphics Workshop), one I found via archie (Draft Choice - old version though) and the rest I couldn't find. So if there is anyone that knows where I can get the following programs via anonymous ftp, please let me know. Adkins Graphics :AG1.ZIP, AG2.ZIP Draft Choice (latest VGA version) : DRAFTC.ZIP Envision Publisher: ENVIS1.ZIP, ENVIS2.ZIP Neopaint: NEOPNT.ZIP Thanx in advance. D.PETRO -- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ > DAVID PETRO KWYJIBO-- A big, dumb, balding < > Dept. of Physics North American ape. < > University of Windsor petro@server.uwindsor.ca < @@@@38272.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!wupost!usc!news.service.uci.edu!ucivax!bonnie.ics.uci.edu!mmadsen From: mmadsen@bonnie.ics.uci.edu (Matt Madsen) Subject: Re: Please Recommend 3D Graphics Library For Mac. Nntp-Posting-Host: bonnie.ics.uci.edu Message-ID: <2BCCDC27.25436@ics.uci.edu> Reply-To: mmadsen@ics.uci.edu (Matt Madsen) Organization: Univ. of Calif., Irvine, Info. & Computer Sci. Dept. Lines: 27 Date: 15 Apr 93 03:53:11 GMT References: <C5HLoD.2G1@bcstec.ca.boeing.com> Robert G. Carpenter writes: >Hi Netters, > >I'm building a CAD package and need a 3D graphics library that can handle >some rudimentry tasks, such as hidden line removal, shading, animation, etc. > >Can you please offer some recommendations? > >I'll also need contact info (name, address, email...) if you can find it. > >Thanks > >(Please Post Your Responses, in case others have same need) > >Bob Carpenter > I too would like a 3D graphics library! How much do C libraries cost anyway? Can you get the tools used by, say, RenderMan, and can you get them at a reasonable cost? Sorry that I don't have any answers, just questions... Matt Madsen mmadsen@ics.uci.edu @@@@38273.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!news-feed-1.peachnet.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!stein.u.washington.edu!kshin From: kshin@stein.u.washington.edu (Kevin Shin) Subject: thinning algorithm Date: 15 Apr 1993 03:48:20 GMT Organization: University of Washington, Seattle Lines: 10 Message-ID: <1qilu4INNqp3@shelley.u.washington.edu> NNTP-Posting-Host: stein.u.washington.edu Hi, netters I am looking for source code that can reads the ascii file or bitmap file and produced the thinned image. For example, to preprocess the character image I want to apply thinning algorithm. thanks kevin . @@@@38274.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!darwin.sura.net!seas.gwu.edu!geigel From: geigel@seas.gwu.edu (Joseph Geigel) Subject: Looking for AUTOCAD .DXF file parser Message-ID: <1993Apr14.213802.3008@seas.gwu.edu> Organization: George Washington University Date: Wed, 14 Apr 1993 21:38:02 GMT Lines: 16 Hello... Does anyone know of any C or C++ function libraries in the public domain that assist in parsing an AUTOCAD .dxf file? Please e-mail. Thanks, -- -- jogle geigel@seas.gwu.edu @@@@38275.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!magnesium.club.cc.cmu.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!zyeh From: zyeh@caspian.usc.edu (zhenghao yeh) Subject: Delaunay Triangulation Date: 12 Apr 1993 17:23:05 -0700 Organization: University of Southern California, Los Angeles, CA Lines: 9 Sender: zyeh@caspian.usc.edu (zhenghao yeh) Distribution: world Message-ID: <lsk1v9INN93c@caspian.usc.edu> NNTP-Posting-Host: caspian.usc.edu Does anybody know what Delaunay Triangulation is? Is there any reference to it? Is it useful for creating 3-D objects? If yes, what's the advantage? Thanks in advance. Yeh USC @@@@38276.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!news-feed-1.peachnet.edu!umn.edu!umeecs!krusty.eecs.umich.edu!katkere From: katkere@krusty.eecs.umich.edu (Arun Katkere) Subject: Re: cylinder and ray Message-ID: <1993Apr15.040423.3889@zip.eecs.umich.edu> Sender: news@zip.eecs.umich.edu (Mr. News) Reply-To: katkere@engin.umich.edu Organization: University of Michigan EECS Dept., Ann Arbor, MI References: <1qc1fgINNbv4@darkstar.UCSC.EDU> Date: Thu, 15 Apr 1993 04:04:23 GMT Lines: 19 In article <1qc1fgINNbv4@darkstar.UCSC.EDU>, koehler@secs.ucsc.edu writes: |> I would be most thrilled if some kind person could help me with the following |> Given a cylinder in 3D -defined as a line segment between two points and |> a radius (e.g. Sx,Sy,Sz to Ex,Ey,Ez and r), what is the easiest (and not |> too expensive) way to find if a ray -defined as another line through two |> points -cuts through this cylinder and if so where? |> I think the test for touching is rather simple: if the closest approach |> of the two lines is less than r, then the ray does penetrate the cylinder. Nope, this won't work for a cylinder. You can have a line arbitrarily close to the the cylinder backbone, and yet not intersect it. The test works for a pillbox, though. (a cylinder with two hemispheres attached at the ends.) |> Thanks, |> Ryan (koehler@secs.ucsc.edu) -arun -- @@@@38277.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!swrinde!zaphod.mps.ohio-state.edu!usc!hacgate!luke.rsg.hac.com!lee From: lee@luke.rsg.hac.com (C. Lee) Subject: Re: Crimson (Was: Kubota Announcement?) Message-ID: <30523@hacgate.SCG.HAC.COM> Date: 15 Apr 93 02:47:21 GMT References: <29542@hacgate.SCG.HAC.COM> <115072@bu.edu> Sender: news@hacgate.SCG.HAC.COM Organization: Hughes Transportation Simulation Center, HAC; Culver City, CA Lines: 30 In article <115072@bu.edu> kiki@PROBLEM_WITH_INEWS_GATEWAY_FILE (Keith Baccki) writes: >C. Lee (lee@obiwan.rsg.hac.com) wrote: >: Did you say DEC Alpha? Upgrade path from [...] >: 6xx0: replace. Upgrade path from VAX 66x0 to Alpha: replace the system. > Not totally fair - you haven't mentioned the DECstation >series. I think if SGI made CISC mainframes they wouldn't provide >an upgrade path to an Onyx. I agree with you about the upgrade path; but I think I was fair. The original posting complained (1) about SGI coming out with newer (and better) architectures and not having an upgrade path from the older ones, and (2) that DEC did. On statement (1), I merely attempted to point out that all computer companies are constantly attempting to improve their product (& market position/share). In so doing, they eventually come to a point where they have a new architecture, and the only upgrade path is to replace the system. And the particular system he was complaining about was (in computer lifetimes) relatively old. On statement (2), I felt DEC's history of providing upgrades was not far superior than the industry "average", and that, in my opinion, SGI's history is better than DEC's. (And what is DEC doing with it's MIPS based DECstation line? Are they going to "abandon" it for their Alpha based line, or provide an upgrade path to R4400's and TFP's and R5's?) -- @@@@38278.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!news.centerline.com!uunet!gatech!darwin.sura.net!zaphod.mps.ohio-state.edu!sdd.hp.com!ux1.cso.uiuc.edu!news.iastate.edu!iscsvax.uni.edu!williams4000 From: williams4000@iscsvax.uni.edu Subject: BOOK OF KELLS CORRECTION!!! Message-ID: <1993Apr14.221400.12376@iscsvax.uni.edu> Date: 14 Apr 93 22:14:00 -0600 Organization: University of Northern Iowa Lines: 11 I aparantly mistyped the address for the ftp site which holds the images. The correct address should be: jupiter.csd.unb.ca ^^ rather than jupiter.csd.unb.edu. They are in the directory: \pub\library.info Jon Williams University of Northern Iowa @@@@38279.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!sol.ctr.columbia.edu!The-Star.honeywell.com!umn.edu!news-feed-1.peachnet.edu!gatech!udel!news.intercon.com!psinntp!isc-newsserver!ultb!jxl9011 From: jxl9011@ultb.isc.rit.edu (J.X. Lee) Subject: JOB Message-ID: <1993Apr15.022015.25817@ultb.isc.rit.edu> Sender: news@ultb.isc.rit.edu (USENET News System) Nntp-Posting-Host: ultb-gw.isc.rit.edu Organization: Rochester Institute of Technology Distribution: SERI Date: Thu, 15 Apr 1993 02:20:15 GMT Lines: 45 JOB OPPORTUNITY --------------- SERI(Systems Engineering Research Institute), of KIST(Korea Institute of Science and Technology) is looking for the resumes for the following position and need them by the end of June (6/30). If you are interested, send resumes to: CAD/CAE lab (6th floor) Systems Engineering Research Institute Korea Institute of Science and Technology Yousung-Gu, Eoeun-Dong, Daejon. Korea 305-600 COMPANY: Systems Engineering Research Institute TITLE : Senior Research Scientist JOB DESCRIPTION : In depth knowledge of C. Working knowledge of Computer Aided Design. Working knowledge of Computer Graphics. Working knowledge of Virtual Reality. Skills not required but desirable : knowledge of data modeling, virtual reality experience, understanding of client/server architecture. REQUIREMENT : Ph.D JOB LOCATION : Daejon, Korea Contact Info : Chul-Ho, Lim CAD/CAE lab (6th floor) Systems Engineering Research Institute Korea Institute of Science and Technology Yousung-Gu, Eoeun-Dong, Daejon. Korea 305-600 Phone) 82-42-869-1681 Fax) 82-42-861-1999 E-mail) jxl9011@129.21.200.201 @@@@38280.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!swrinde!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!uunet!munnari.oz.au!foxhound.dsto.gov.au!fang.dsto.gov.au!dstos3.dsto.gov.au!egg From: egg@dstos3.dsto.gov.au Subject: Chosing optimal colors for colormap ? Date: 15 Apr 93 16:24:39 +0930 Organization: Defence Science and Technology Organisation Lines: 12 Message-ID: <1993Apr15.162439.1@dstos3.dsto.gov.au> NNTP-Posting-Host: dstos3.dsto.gov.au Hi, I'm looking for an algorithm that would generate a good cross-section of RGB colours given a limited colour map size. The problem: I'm writing an application for the PC that may have at most 256 colors. I want to use one colormap (palette) for the application but I'd like it to contain an even spread of colours of the visible spectrum. I could use a 6x6x6 RGB cube but the problem is that a lot of those colours are almost identical to the human eye. Does anyone know how I can optimize my choice of colors ? @@@@38281.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!olivea!charnel!rat!koko.csustan.edu!altair.csustan.edu!rsc From: rsc@altair.csustan.edu (Steve Cunningham) Subject: Re: SIGGRAPH Summary: No free lunch this year! Message-ID: <1993Apr15.070645.29184@koko.csustan.edu> Date: 15 Apr 93 07:06:45 GMT References: <4636.513.uupcb@almac.co.uk> <lsiv4tINNhim@exodus.Eng.Sun.COM> Sender: news@koko.csustan.edu (USENET News System) Organization: CSU Stanislaus Lines: 27 srnelson@speedsail.Eng.Sun.COM (Scott R. Nelson) writes: > dave.mikelson@almac.co.uk (Dave Mikelson) writes: > ... > >Does anyone know if there is an 'open day' for the public at any time? > >That is, not to attend conferences, but just browse around the > >exhibits. Or are the exhibits etc just for fully registered attendees? > was free as long as you got it to Siggraph on or before July 7. > For 1991, it was similar: $20.00 or free before July 9. It is safe > to assume that the same kind of deal will be available this year. I just got my advance program and the "card in the back" is for the Exhibits Plus program -- the exhibits plus admission to a number of conference venues, including a special general session, "Behind the Scenes: Computer Graphics in Film." Admission is not free, but is a nominal $30 (exhibits are open August 3 -- 5). To get a copy of the advance program, you can call 312-321-6830; the advance program itself is a good indication of the excitement of the conference! > > Register early and get in for free. Sorry -- doesn't work this year! -- Steve Cunningham @@@@38282.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!zaphod.mps.ohio-state.edu!uwm.edu!caen!batcomputer!ghost.dsi.unimi.it!rosa From: rosa@ghost.dsi.unimi.it (massimo rossi) Subject: 3d studio works changes!!!! Organization: Computer Science Dep. - Milan University Date: Thu, 15 Apr 1993 08:18:06 GMT Message-ID: <1993Apr15.081806.7019@ghost.dsi.unimi.it> Lines: 28 hi guys like all people in this group i'm a fans of fractal and render sw my favourite are fractint pov & 3dstudio 2.0 now listen my ideas i'have just starting now to be able to use 3dstudio quite well so i'm simulating a full animation of a f1 grand prix unfortanatly just some lap(10?) i' m very interested about all kind of .prj .3ds and so on concerning about cars or parts of its (motors wheel ...) (dxf are good enough) does anyone have object to give me to complete my hard animation anyway any exchanges about object material project will be VERY APRECIATE!!!!! is there a ftp site where I can find its? i' m looking for .pov files too (i 'm interested about cpu time comparision rendering images on pov & 3dstusio) thank to all email me at rosa@ghost.sm.dsi.unimi.it @@@@38283.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!gatech!pitt.edu!unixd2.cis.pitt.edu!djmst19 From: djmst19@unixd2.cis.pitt.edu (David J Madura) Subject: Re: Rumours about 3DO ??? Message-ID: <8942@blue.cis.pitt.edu> Date: 15 Apr 93 10:34:50 GMT References: <C56q9H.Ayq@optimla.aimla.com> Sender: news+@pitt.edu Followup-To: comp.multimedia Lines: 13 X-Newsreader: Tin 1.1 PL3 dave@optimla.aimla.com (Dave Ziedman) writes: : 3DO is still a concept. : The software is what sells and what will determine its : success. Apparantly you dont keep up on the news. 3DO was shown at CES to developers and others at private showings. Over 300 software licensees currently developing software for it. I would say that it is a *LOT* more than just a concept. @@@@38284.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!uunet!pipex!uknet!warwick!thyme!esuoc From: esuoc@csv.warwick.ac.uk (Ajay Soni) Subject: Re: Please Recommend 3D Graphics Library For M Date: 15 Apr 1993 11:17:13 GMT Organization: Computing Services, University of Warwick, UK Lines: 44 Distribution: world Message-ID: <1qjg7pINNkar@violet.csv.warwick.ac.uk> References: <C5HLoD.2G1@bcstec.ca.boeing.com> Reply-To: esuoc@csv.warwick.ac.uk NNTP-Posting-Host: thyme.csv.warwick.ac.uk In article 2G1@bcstec.ca.boeing.com, rgc3679@bcstec.ca.boeing.com (Robert G. Carpenter) writes: >Hi Netters, > >I'm building a CAD package and need a 3D graphics library that can handle >some rudimentry tasks, such as hidden line removal, shading, animation, etc. > >Can you please offer some recommendations? > >I'll also need contact info (name, address, email...) if you can find it. > >Thanks > >(Please Post Your Responses, in case others have same need) > >Bob Carpenter > I've been given the sites of some excellent 3D objects on all sorts of file formats ... Here's where they are: Host plaza.aarnet.edu.au Location: /graphics/graphics/mirrors DIRECTORY drwxr-xr-x 512 Apr 4 14:32 avalon.chinalake.navy.mil Host compute1.cc.ncsu.edu Location: /mirrors/wustl/graphics/graphics/mirrors DIRECTORY drwxr-xr-x 512 Mar 14 09:15 avalon.chinalake.navy.mil Host wuarchive.wustl.edu Location: /graphics/graphics/mirrors DIRECTORY drwxr-xr-x 512 Jan 3 06:29 avalon.chinalake.navy.mil See ya! Ajay 8*) @@@@38285.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!gatech!howland.reston.ans.net!noc.near.net!uunet!math.fu-berlin.de!irz401!sax!not-for-mail From: joerg@sax.sax.de (Joerg Wunsch) Subject: About the various DXF format questions Date: 15 Apr 1993 14:18:43 +0200 Organization: SaxNet, Dresden, Germany Lines: 25 Distribution: world Message-ID: <1qjjr3$c30@sax.sax.de> NNTP-Posting-Host: sax.sax.de Summary: List of sites holding documentation of DXF format Keywords: DXF, graphics formats Archie told me the following sites holding documentation about DXF: Host nic.funet.fi (128.214.6.100) Last updated 15:11 7 Apr 1993 Location: /pub/csc/graphics/format FILE rwxrwxr-- 95442 Dec 4 1991 dxf.doc Host rainbow.cse.nau.edu (134.114.64.24) Last updated 17:09 1 Jun 1992 Location: /graphics/formats FILE rw-r--r-- 95442 Mar 23 23:31 dxf.doc Host ftp.waseda.ac.jp (133.9.1.32) Last updated 00:47 5 Apr 1993 Location: /pub/data/graphic FILE rw-r--r-- 39753 Nov 18 1991 dxf.doc.Z -- J"org Wunsch, ham: dl8dtl : joerg_wunsch@uriah.sax.de If anything can go wrong... : ...or: .o .o : joerg@sax.de,wutcd@hadrian.hrz.tu-chemnitz.de, <_ ... IT WILL! : joerg_wunsch@tcd-dresden.de @@@@38286.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!gatech!howland.reston.ans.net!noc.near.net!uunet!umcc!not-for-mail From: lcd@umcc.umcc.umich.edu (Leon Dent) Subject: Re: MPEG for x-windows MONO needed. Date: 15 Apr 1993 08:39:55 -0400 Organization: UMCC, Ann Arbor, MI Lines: 20 Message-ID: <1qjl2r$n0d@umcc.umcc.umich.edu> References: <1qf2m0$139@gondor.sdsu.edu> NNTP-Posting-Host: umcc.umcc.umich.edu On sunsite.unc.edu in pub/multimedia/utilities/unix find mpeg_play-2.0.tar.Z. I find for mono it works best as mpeg_play -dither threshold though you can use mpeg_play -dither mono Face it, this is not be the best viewing situation. Also someone has made a patch for mpeg_play that gives two more mono modes (mono2 and halftone). They are by jan@pandonia.canberra.edu.au (Jan Newmarch). And the patch can be found on csc.canberra.edu.au (137.92.1.1) under /pub/motif/mpeg2.0.mono.patch. Leon Dent lcd@umcc.umich.edu @@@@38287.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!wupost!uunet!pipex!uknet!mcsun!news.funet.fi!aton.abo.fi!mtoivakk From: mtoivakk@abo.fi (Martti Toivakka PAP) Subject: Compiled version of VOGL-library for PC? Message-ID: <1993Apr15.122822.9619@abo.fi> Keywords: VOGL Organization: Abo Akademi University Date: Thu, 15 Apr 1993 12:28:22 GMT Lines: 11 Has anybody compiled VOGL-graphics library for IBM-PC? I need to call it from MS-Fortran but don't have MS-C to compile the sources. Thanks for any help... martti toivakka mtoivakk@abo.fi @@@@38288.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!agate!spool.mu.edu!uunet!pipex!mfmail!sts From: sts@mfltd.co.uk (Steve Sherwood (x5543)) Subject: Re: Virtual Reality for X on the CHEAP! Message-ID: <1993Apr15.134802.21995@mfltd.co.uk> Sender: news@mfltd.co.uk (News Login) Reply-To: sts@mfltd.co.uk Organization: Micro Focus Ltd, Newbury, England References: <1qhun7$6po@acsc.com> <1qi19q$6t2@acsc.com> Date: Thu, 15 Apr 1993 13:48:02 GMT Lines: 19 Has anyone got multiverse to work ? I have built it on 486 svr4, mips svr4s and Sun SparcStation. There seems to be many bugs in it. The 'dogfight' and 'dactyl' simply do nothing (After fixing a bug where a variable is defined twice in two different modules - One needed setting to static - else the client core-dumped) Steve -- Extn 5543, sts@mfltd.co.uk, !uunet!mfocus!sts +-----------------------------------+------------------------+ Micro Focus | Just like Pariah, I have no name, | rm -rf * | 26 West Street | Living in a blaze of obscurity, | "rum ruff splat" | Newbury | Need courage to survive the day. | | Berkshire +-----------------------------------+------------------------+ England (A)bort (R)etry (I)nfluence with large hammer @@@@38289.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!wupost!uunet!mcsun!sun4nl!spider.research.ptt.nl!athena.research.ptt.nl!ederveen From: ederveen@athena.research.ptt.nl (Ederveen D.) Subject: Micro World Data Bank II ? Message-ID: <ederveen.734879429@athena.research.ptt.nl> Sender: usenet@spider.research.ptt.nl (USEnet News) Nntp-Posting-Host: athena.research.ptt.nl Reply-To: D.N.M.Ederveen@research.ptt.nl Organization: PTT Research, The Netherlands Date: Thu, 15 Apr 1993 13:10:29 GMT Lines: 18 I'm looking for a database called "Micro World Data Bank II", a database with digital map information containing 178,068 latitude, longitude points. It is said to be in the public domain. If anyone knows a place where I can get it (preferably FTP/gopher/mailserver etc.; otherwise snail mail) please let me know. I you have it yourself and are willing to send me the file, drop me a line. I'll be using it with a program called VERSAMAP by Charles H. Culberson. If anyone knows of another detailed database that can be used with this program (preferably PD), I would be very interested. Replies by e-mail please, directly to me, I don't read this group regularly. If there's interest I'll post a summary, of course. -- Derk Ederveen (FidoNet 2:283/323) tel. +31-70-3323202 D.N.M.Ederveen@research.ptt.nl / ederveen@hlsdnl5.bitnet fax. +31-70-3326477 x400: /c=nl/admd=400net/prmd=ptt research/o=ptt research/s=ederveen/i=dnm ** "I wish I was a warrior, in every language that I speak" - Lou Reed ** @@@@38290.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!darwin.sura.net!newsserver.jvnc.net!howland.reston.ans.net!agate!ames!sun-barr!sh.wide!wnoc-tyo-news!news.u-tokyo.ac.jp!s.u-tokyo!is.s.u-tokyo!young From: young@is.s.u-tokyo.ac.jp (YOUNG Shio Hong) Subject: Looking for Dr. Bala R. Vatti's email address Nntp-Posting-Host: rabbit-gw Message-ID: <1993Apr15.125249.9270@isnews.is.s.u-tokyo.ac.jp> Organization: Dept. of Information Science, Univ. of Tokyo, Japan. Sender: news@isnews.is.s.u-tokyo.ac.jp (Usenet News System) Date: Thu, 15 Apr 1993 12:51:15 GMT Distribution: comp.graphics X-Bytes: 660 Lines: 27 Hi! I am looking for the email address of the author to "A Generic Solution to Polygon Clipping", Communication of the ACM, July 1992, Vol. 35, No. 7. I got information about the author as follows Mr. Bala R. Vatti LCEC, 65 River Road, Hudson, N.H. 03051 email: vatti@waynar.lcec.lockheed I want to get some related and detailed papers about the same topic from the author. But I failed to send my email to the address. Any information is appreciated. Thank you very much. Best regards. S. H. Young Kunii Lab Dept. of Information Science Faculty of Science University of Tokyo Bunkyo-Ku, Hongo 7-3-1 113 Tokyo, Japan email: young@is.s.u-tokyo.ac.jp @@@@38291.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!ux1.cso.uiuc.edu!milo.mcs.anl.gov!mamaier.med.anl.gov!user From: michael_maier@qmgate.anl.gov (Michael Maier) Subject: Round VS Elliptical DOT Screens Message-ID: <michael_maier-150493081953@mamaier.med.anl.gov> Followup-To: comp.graphics Sender: usenet@mcs.anl.gov Organization: ANL Date: Thu, 15 Apr 1993 14:14:58 GMT Lines: 15 When using Photoshop is there anyway to get an elliptical dot for the halftone screen rather than a round dot ? My printer would prefer an elliptical dot, but I'm not sure how to set it up. I'm sending from a Mac IIci to a Linotronic L300 imagesetter and I am using Photoshop 2.0.1 to make my separations. Any help would be greatly appreshed. T.I.A. Michael (Unscene) Michael Maier, Computer Artist, ANL | [|Ú]---*Z* Glued to the veiw. Email michael_maier@qmgate.anl.gov | "TV is the milk of Amnesia." Phone 708 252 5298 | Ñ Michael Maier @@@@38292.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!gatech!swrinde!network.ucsd.edu!ivem.ucsd.edu!spl From: spl@ivem.ucsd.edu (Steve Lamont) Subject: SGI sales practices (Was: Crimson (Was: Kubota Announcement?)) Date: 15 Apr 1993 14:28:28 GMT Organization: University of Calif., San Diego/Microscopy and Imaging Resource Lines: 49 Message-ID: <1qjrec$qem@network.ucsd.edu> References: <29542@hacgate.SCG.HAC.COM> <115072@bu.edu> <30523@hacgate.SCG.HAC.COM> NNTP-Posting-Host: ivem.ucsd.edu In article <30523@hacgate.SCG.HAC.COM> lee@luke.rsg.hac.com (C. Lee) writes: >The original posting complained (1) about SGI coming out with newer (and >better) architectures and not having an upgrade path from the older ones, >and (2) that DEC did. No. That's *not* what I was complaining about, nor did I intend to suggest that DEC was any better than SGI (let me tell you about the Lynx some day, but be prepared with a large sedative if you do...). My comment regarding DEC was to indicate that I might be open to other vendors that supported OpenGL, rather than deal further with SGI. What I *am* annoyed about is the fact that we were led to believe that we *would* be able to upgrade to a multiprocessor version of the Crimson without the assistance of a fork lift truck. I'm also annoyed about being sold *several* Personal IRISes at a previous site on the understanding *that* architecture would be around for a while, rather than being flushed. Now I understand that SGI is responsible to its investors and has to keep showing a positive quarterly bottom line (odd that I found myself pressured on at least two occasions to get the business on the books just before the end of the quarter), but I'm just a little tired of getting boned in the process. Maybe it's because my lab buys SGIs in onesies and twosies, so we aren't entitled to a "peek under the covers" as the Big Kids (NASA, for instance) are. This lab, and I suspect that a lot of other labs and organizations, doesn't have a load of money to spend on computers every year, so we can't be out buying new systems on a regular basis. The boxes that we buy now will have to last us pretty much through the entire grant period of five years and, in some case, beyond. That means that I need to buy the best piece of equipment that I can when I have the money, not some product that was built, to paraphrase one previous poster's words, 'to fill a niche' to compete with some other vendor. I'm going to be looking at this box for the next five years. And every time I look at it, I'm going to think about SGI and how I could have better spent my money (actually *your* money, since we're supported almost entirely by Federal tax dollars). Now you'll have to pardon me while I go off and hiss and fume in a corner somewhere and think dark, libelous thoughts. spl -- Steve Lamont, SciViGuy -- (619) 534-7968 -- spl@szechuan.ucsd.edu San Diego Microscopy and Imaging Resource/UC San Diego/La Jolla, CA 92093-0608 "My other car is a car, too." - Bumper strip seen on I-805 @@@@38293.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!wupost!udel!news.intercon.com!digex.com!digex.com!not-for-mail From: cheinan@access.digex.com (Cheinan Marks) Subject: Re: Please Recommend 3D Graphics Library For Mac. Followup-To: comp.sys.mac.programmer,comp.graphics,comp.graphics.animation Date: 15 Apr 1993 10:55:01 -0400 Organization: Express Access Online Communications, Greenbelt, MD USA Lines: 100 Message-ID: <1qjt05$4lc@access.digex.net> References: <2BCCDC27.25436@ics.uci.edu> NNTP-Posting-Host: access.digex.net X-Newsreader: TIN [version 1.1 PL8] : Robert G. Carpenter writes: : >Hi Netters, : > : >I'm building a CAD package and need a 3D graphics library that can handle : >some rudimentry tasks, such as hidden line removal, shading, animation, etc. : > : >Can you please offer some recommendations? : > : >I'll also need contact info (name, address, email...) if you can find it. : > : >Thanks : > : >(Please Post Your Responses, in case others have same need) : > : >Bob Carpenter : > The following is extracted from sumex-aim.stanford.edu. It should also be on the mirrors. I think there is source for some applications that may have some bearing on your project. Poke around the source directory. I've never used this package, nor do I know anyone who did, but the price is right :-) Hope this helps. Cheinan Abstracts of files as of Thu Apr 1 03:11:39 PST 1993 Directory: info-mac/source #### BINHEX 3d-grafsys-121.hqx **** Date: Fri, 5 Mar 93 14:13:07 +0100 From: Christian Steffen Ove Franz <cfranz@iiic.ethz.ch> To: questions@mac.archive.umich.edu Subject: 3d GrafSys 1.21 in incoming directory A 3d GrafSys short description follows: Programmers 3D GrafSys Vers 1.21 now available. Version 1.21 is mainly a bugfix for THINK C users. THIS VERSION NOW RUNS WITH THINK C, I PROMISE! The Docs now contain a chapter for C programmers on how to use the GrafSys. If you have problems, feel free to contact me. The other change is that I removed the FastPerfTrig calls from the FPU version to make it run faster. Those of you who don't know what all this is about, read on. ******** Programmers 3D GrafSys -- What it is: ------------------------------------- Didn't you always have this great game in mind where you needed some way of drawing three-dimensional scenes? Didn't you always want to write this program that visualized the structure of three-dimensional molecules? And didn't the task of writing your 3D conversions routines keep you from actually doing it? Well if the answer to any of the above questions is 'Yes, but what has it to do with this package???' , read on. GrafSys is a THINK Pascal/C library that provides you with simple routines for building, saving, loading (as resources), and manipulating (independent rotating around arbitrary achses, translating and scaling) three dimensional objects. Objects, not just simple single-line drawings. GrafSys supports full 3D clipping, animation and some (primitive) hidden- line/hidden-surface drawing with simple commands from within YOUR PROGRAM. GrafSys also supports full eye control with both perspective and parallel projections (If you can't understand a word, don't worry, this is just showing off for those who know about it. The docs that come with it will try to explain what it all means later on). GrafSys provides a powerful interface to supply your own drawing routines with data so you can use GrafSys to do the 3D transformations and your own routines to do the actual drawing. (Note that GrafSys also provides drawing routines so you don't have to worry about that if you don't want to) GrafSys 1.11 comes in two versions. One for the 881 and 020 or above processors. The other version uses fixed-point arithmetic and runs on any Mac. Both versions are *100% source compatibel*. GrafSys comes with an extensive manual that teaches you the fundamentals of 3D graphics and how to use the package. If demand is big enough I will convert the GrafSys to an object-class library. However, I feelt that the way it is implemented now makes it easier to use for a lot more people than the select 'OOP-Guild'. GrafSys is free for any non-commercial usage. Read the documentation enclosed. Enjoy, Christian Franz @@@@38294.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!uunet!mcsun!sun4nl!sun2.iend.wau.nl!PvdVeen.EL.WAU.NL From: Peter.vanderveen@visser.el.wau.nl (Peter van der Veen) Subject: Re: Fonts in POV?? Message-ID: <19930415162925.Peter.vanderveen@PvdVeen.EL.WAU.NL> Lines: 30 Sender: news@sun2.iend.wau.nl (Newsmanager WAU) Organization: Wageningen Agricultural University X-Newsreader: FTPNuz (DOS) v1.0 References: <1qg9fc$et9@wampyr.cc.uow.edu.au> Date: Thu, 15 Apr 1993 20:29:00 GMT In Article <1qg9fc$et9@wampyr.cc.uow.edu.au> "g9134255@wampyr.cc.uow.edu.au (Coronado Emmanuel Abad)" says: > > > I have seen several ray-traced scenes (from MTV or was it > RayShade??) with stroked fonts appearing as objects in the image. > The fonts/chars had color, depth and even textures associated with > them. Now I was wondering, is it possible to do the same in POV?? > > > Thanks, > > Noel > Yes, there are serveral programs which can convert font files (eq the Borland fonts) to objects consisting of spheres, cones etc. I've used a program (forgot its name/place, but i can look for it) which converted these Borland fonts to three different raytracers. Vivid, POV and Polyray (which i like more (more flexibel/faster/use of expressions etc). The program has a lot nice features. So if interested give me a mail. /*---------*\*/*-------------------------------------------*\ *| ____/| *|* PETER.VANDERVEEN@VISSER.EL.WAU.NL |* *| \ o.O| *|* Department of Genetics |* *| =(_)= *|* Agricultural University |* *| U *|* Wageningen, The Netherlands |* \*---------*/*\*-------------------------------------------*/ @@@@38295.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!agate!deep.rsoft.bc.ca!mindlink!a1681 From: Geoffrey_Hansen@mindlink.bc.ca (Geoffrey Hansen) Subject: Re: VESA on the Speedstar 24 Organization: MIND LINK! - British Columbia, Canada Date: Thu, 15 Apr 1993 15:56:04 GMT Message-ID: <23150@mindlink.bc.ca> Sender: news@deep.rsoft.bc.ca (Usenet News at rsoft.bc.ca) Lines: 12 Using the VMODE command, all you need to do is type VMODE VESA at the dos prompt. VMODE is included with the Speedstar 24. I have used the VESA mode for autodesk animator pro. -- <=================================================| | geoffrey_hansen@mindlink.bc.ca | |=================================================> "Inumerable confusions and a feeling of despair invariably emerge in periods of great technological and cultural transition." Marshall McLuhan @@@@38296.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!sol.ctr.columbia.edu!ira.uka.de!scsing.switch.ch!univ-lyon1.fr!ghost.dsi.unimi.it!ruocco From: ruocco@ghost.dsi.unimi.it (sergio ruocco) Subject: Re: HOT NEW 3D Software Keywords: Imagine,3d References: <trb3.734742669@Ra.MsState.Edu> Organization: Computer Science Dep. - Milan University Date: Thu, 15 Apr 1993 15:58:49 GMT Message-ID: <1993Apr15.155849.22753@ghost.dsi.unimi.it> Lines: 26 I don't have nor Imagine nor Real 3d, but as old Amiga user I think you should take a look also to Real 3d 2.0 for the Amiga. I saw Imagine 2.0 on the Amiga for a long time at my friend's home, and I've seen R3D 2.0 in action at Bit.Movie 93 in Riccione, Italy (an Italian Computer Graphics Contest). Many professionals using 3d Studio on PC, SoftImage for Silicon Graphics and Imagine on the Amiga were *VERY IMPRESSED* by the power of this programs. Sorry, I've lost the posting with full description of features of this great program. For more informations give a look in comp.sys.amiga.graphics. Representative of Activa International told me that it will be out in 2 weeks for the Amiga and that PC MS-Windows, Silicon Indigo and Unix version are under development. Ciao, Sergio -- Sergio Ruocco - ruocco@ghost.sm.dsi.unimi.it Via Di Vittorio, 4 I-20019 Settimo Milanese Milano Phone: 0039-2-3283896 @@@@38297.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!uunet!news.larc.nasa.gov!thrasher.larc.nasa.gov!george From: george@ccmail.larc.nasa.gov (George M. Brown) Subject: Re: PCX Date: Thu, 15 Apr 1993 15:21:26 GMT Organization: Client Specific Systems, Inc. Lines: 41 Message-ID: <george.10.734887286@ccmail.larc.nasa.gov> References: <1993Apr14.220100.17867@freenet.carleton.ca> NNTP-Posting-Host: thrasher.larc.nasa.gov In article <1993Apr14.220100.17867@freenet.carleton.ca> ad994@Freenet.carleton.ca (Jason Wiggle) writes: >From: ad994@Freenet.carleton.ca (Jason Wiggle) >Subject: PCX >Date: Wed, 14 Apr 1993 22:01:00 GMT > >Hello > HELP!!! please > I am a student of turbo c++ and graphics programming > and I am having some problems finding algorithms and code > to teach me how to do some stuff.. > > 1) Where is there a book or code that will teach me how > to read and write pcx,dbf,and gif files? > > 2) How do I access the extra ram on my paradise video board > so I can do paging in the higher vga modes ie: 320x200x256 > 800x600x256 > 3) anybody got a line on a good book to help answer these question? > >Thanks very much ! > >send reply's to : Palm@snycanva.bitnet > >Peace be >Blessed be >Stephen Palm A book that I can somewhat recommend is : Pratical Image Processing in C by Craig A. Lindley published by Wiley It addresses reading/writing to/from PCX/TIFF files; image acquisition, manipulation and storage; and has source code in the book. The source is primarily written in Turbo C and naturally has conversion possibilities. I have converted some of it to Quick C. Naturally, the code has some problems in the book - as usuall. Typos, syntax, etc. are problems. It can be a good learning experience for someone who is studying C. There is also a companion disk with source available for order and $50.00. Overall, the book is not bad. I acquired the book at WaldenSoftware. @@@@38298.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!wupost!udel!news.intercon.com!psinntp!shearson.com!rael!rschmitt From: rschmitt@shearson.com (Robert Schmitt) Subject: Re: Please Recommend 3D Graphics Library F Message-ID: <1993Apr15.134211.11170@shearson.com> Sender: news@shearson.com (News) Reply-To: rschmitt@shearson.com Organization: Lehman Brothers, Inc. References: <2BCCDC27.25436@ics.uci.edu> Date: Thu, 15 Apr 1993 13:42:11 GMT Lines: 9 What hardware do plan to run on? Workstation or PC? Cost level? Run-time licensing needs? Bob ------------------------------------------------------------------ Robert A. Schmitt | Applied Derivatives Technology | Lehman Brothers rschmitt@shearson.com @@@@38299.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!wupost!usc!usc!not-for-mail From: weber@sipi.usc.edu (Allan G. Weber) Subject: Need help with Mitsubishi P78U image printer Date: 15 Apr 1993 09:37:39 -0700 Organization: University of Southern California, Los Angeles, CA Lines: 26 Sender: nntp@sipi.usc.edu Distribution: na Message-ID: <1qk30jINNskb@sipi.usc.edu> NNTP-Posting-Host: sipi.usc.edu Our group recently bought a Mitsubishi P78U video printer and I could use some help with it. We bought this thing because it (1) has a parallel data input in addition to the usual video signal inputs and (2) claimed to print 256 gray level images. However, the manual that came with it only describes how to format the parallel data to print 1 and 4 bit/pixel images. After some initial problems with the parallel interface I now have this thing running from a parallel port of an Hewlett-Packard workstation and I can print 1 and 4 bit/pixel images just fine. I called the Mitsubishi people and asked about the 256 level claim and they said that was only available when used with the video signal inputs. This was not mentioned in the sales literature. However they did say the P78U can do 6 bit/pixel (64 level) images in parallel mode, but they didn't have any information about how to program it to do so, and they would call Japan, etc. Frankly, I find it hard to believe that if this thing can do 8 bit/pixel images from the video source, it can't store 8 bits/pixel in the memory. It's not like memory is that expensive any more. If anybody has any information on getting 6 bit/pixel (or even 8 bit/pixel) images out of this thing, I would greatly appreciate your sending it to me. Thanks. Allan Weber Signal & Image Processing Institute University of Southern California weber@sipi.usc.edu @@@@38300.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!uunet!pipex!zaphod.crihan.fr!univ-lyon1.fr!scsing.switch.ch!sicsun!masg1.epfl.ch!renggli From: renggli@masg1.epfl.ch (loris renggli) Subject: Need graph display/edit Message-ID: <1993Apr15.173134@masg1.epfl.ch> Date: 15 Apr 93 15:31:34 GMT Sender: news@sicsun.epfl.ch Organization: Math. Dept., Swiss Institute of Technology Lines: 17 I am looking for a program that is capable of displaying a graph with nodes and links and with the possibility to edit interactively the graph : add one node, change one link etc... Actually, a very _simple_ X11 program would be ok; all I need is to put some "boxes" (i.e. the nodes ) on a pane and be able to manipulate them with the mouse (move, add or delete boxes). Does anyone know if such program is available ? Thanks for any help !! ------------------------------------------------------------------------ Loris RENGGLI phone : +41-21-6934230 Swiss Federal Institute of Technology fax : +41-21-6934303 Math. Dept CH-1015 Lausanne (Switzerland) e-mail : renggli@masg1.epfl.ch @@@@38301.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!howland.reston.ans.net!usc!sol.ctr.columbia.edu!eff!news.oc.com!mercury.unt.edu!seanmac.acs.unt.edu!mcmains From: Sean McMains <mcmains@unt.edu> Subject: Re: Rumours about 3DO ??? Message-ID: <1993Apr15.164940.11632@mercury.unt.edu> X-Xxmessage-Id: <A7F2FC4E8B01023C@seanmac.acs.unt.edu> X-Xxdate: Thu, 15 Apr 93 17: 49:34 GMT Sender: usenet@mercury.unt.edu (UNT USENet Adminstrator) Organization: University of North Texas X-Useragent: Nuntius v1.1.1d20 References: <1993Mar31.074502.3590@aragorn.unibe.ch> <1993Apr15.143444.32980@rchland.ibm.com> <1993Apr15.143444.32980@rchland.ibm.com> Date: Thu, 15 Apr 1993 16:49:40 GMT Lines: 23 In article <1993Apr15.144843.19549@rchland.ibm.com> Ricardo Hernandez Muchado, ricardo@rchland.vnet.ibm.com writes: > And CD-I's CPU doesn't help much either. I understand it is >a 68070 (supposedly a variation of a 68000/68010) running at something >like 7Mhz. With this speed, you *truly* need sprites. Wow! A 68070! I'd be very interested to get my hands on one of these, especially considering the fact that Motorola has not yet released the 68060, which is supposedly the next in the 680x0 lineup. 8-D Ricardo, the animation playback to which Lawrence was referring in an earlier post is plain old Quicktime 1.5 with the Compact Video codec. I've seen digitized video (some of Apple's early commercials, to be precise) running on a Centris 650 at about 30fps very nicely (16-bit color depth). I would expect that using the same algorithm, a RISC processor should be able to approach full-screen full-motion animation, though as you've implied, the processor will be taxed more with highly dynamic material. ======================================================================== Sean McMains | Check out the Gopher | Phone:817.565.2039 University of North Texas | New Bands Info server | Fax :817.565.4060 P.O. Box 13495 | at seanmac.acs.unt.edu | E-Mail: Denton TX 76203 | | McMains@unt.edu @@@@38302.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!sol.ctr.columbia.edu!news.unomaha.edu!crcnis1.unl.edu!moe.ksu.ksu.edu!kuhub.cc.ukans.edu!parsifal.umkc.edu!sparc2!rleberle Subject: XGA-2 info? Message-ID: <1qik9oINNg0o@parsifal.umkc.edu> From: rleberle@sparc2.cstp.umkc.edu (Rainer Leberle) Date: 15 Apr 1993 03:20:24 GMT Distribution: World Organization: University of Missouri Kansas City NNTP-Posting-Host: sparc2.cstp.umkc.edu Lines: 13 Hi, has anyone more info about the XGA-2 chipset? HW-funcs, TrueColor, Resolutions,... Any boards with XGA-2 out yet? thanks Rainer -- Rainer Leberle rleberle@sparc2.cstp.umkc.edu University of Kansas City, MO >> New mail from clinton@whitehouse.dc.gov - (No Subject Specified) @@@@38303.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!bogus.sura.net!howland.reston.ans.net!ux1.cso.uiuc.edu!highlndr From: highlndr@ux1.cso.uiuc.edu (The Highlander) Subject: Re: TIFF: philosophical significance of 42 Message-ID: <C5JCJI.KJ3@ux1.cso.uiuc.edu> Organization: University of Illinois at Urbana References: <C5Ft68.8HC@mentor.cc.purdue.edu> <1993Apr14.191415.10553@samba.oit.unc.edu> Date: Thu, 15 Apr 1993 17:28:15 GMT Lines: 23 cptully@med.unc.edu (Christopher P. Tully,Pathology,62699) writes: >Why so up tight? FOr that matter, TIFF6 is out now, so why not gripe >about its problems? Also, if its so important to you, volunteer to >help define or critique the spec. HEAR HEAR!!! >Finally, a little numerology: 42 is 24 backwards, and TIFF is a 24 bit >image format... REALLY? i thought that the reason it was 42 was that it is REALLY 24, but written as 42 so that on Intel chips you could get the proper value :) -pete help stomp out the endian wars... break some eggs on their sides! -- Peter Mueller (TheBishop) | When a person commits a violation and sins highlndr@ux1.cso.uiuc.edu | unintentionally in regard to any of the pmueller@mrcnext.cso.uiuc.edu | Lord's holy things, he is to bring to the | Lord as a penalty, a ram from the flock... @@@@38304.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!agate!ames!olivea!sgigate!odin!fido!deadhead.asd.sgi.com!mogal From: mogal@deadhead.asd.sgi.com (Joshua Mogal) Subject: Re: SGI sales practices (Was: Crimson (Was: Kubota Announcement?)) Message-ID: <1qk91u$k8m@fido.asd.sgi.com> Date: 15 Apr 93 18:20:46 GMT References: <29542@hacgate.SCG.HAC.COM> <115072@bu.edu> <30523@hacgate.SCG.HAC.COM> <1qjrec$qem@network.ucsd.edu> Organization: Silicon Graphics, Inc. Lines: 123 NNTP-Posting-Host: deadhead.asd.sgi.com |> My |> comment regarding DEC was to indicate that I might be open to other |> vendors |> that supported OpenGL, rather than deal further with SGI. OpenGL is a graphics programming library and as such is a great, portable interface for the development of interactive 3D graphics applications. It is not, however, an indicator of performance, as that will vary strongly from machine to machine and vendor to vendor. SGI is committed to high performance interactive graphics systems and software tools, so OpenGL means that you can port easily from SGI to other platforms, there is no guarantee that your performance would be comparable. |> |> What I *am* annoyed about is the fact that we were led to believe that |> we *would* be able to upgrade to a multiprocessor version of the |> Crimson without the assistance of a fork lift truck. If your sales representative truly mislead you, then you should have a valid grievance against us which you should carry up to your local SGI sales management team. Feel free to contact the local branch manager...we understand that repeat sales come from satisfied customers, so give it a shot. |> |> I'm also annoyed about being sold *several* Personal IRISes at a |> previous site on the understanding *that* architecture would be around |> for a while, rather than being flushed. As one of the previous posts stated, the Personal IRIS was introduced in 1988 and grew to include the 4D/20, 4D/25, 4D/30 and 4D/35 as clock rates sped up over time. As a rule of thumb, SGI platforms live for about 4-5 years. This was true of the motorola-based 3000 series ('85-'89), the PI ('88-'93), the Professional Series (the early 4D's - '86-'90), the Power Series parallel systems ('88-'93). Individual CPU subsystems running at a particular clock rate usually live for about 2 years. New graphics architectures at the high end (GT, VGX, RealityEngine) are released every 18 months to 2 years. These are the facts of life. If we look at these machines, they become almost archaic after four years, and we have to come out with a new platform (like Indigo, Onyx, Challenge) which has higher bus bandwidths, faster CPUs, faster graphics and I/O, and larger disk capacities. If we don't, we become uncompetitive. From the user perspective, you have to buy a machine that meets your current needs and makes economic sense today. You can't wait to buy, but if you need a guaranteed upgrade path for the machine, ask the Sales Rep for one in writing. If it's feasible, they should be able to do that. Some of our upgrade paths have specific programs associated with them, such as the Performance Protection Program for older R3000-based Power Series multiprocessing systems which allowed purchasers of those systems to obtain a guaranteed upgrade price for moving to the new Onyx or Challenge R4400-based 64-bit multiprocessor systems. |> |> Now I understand that SGI is responsible to its investors and has to |> keep showing a positive quarterly bottom line (odd that I found myself |> pressured on at least two occasions to get the business on the books |> just before the end of the quarter), but I'm just a little tired of |> getting boned in the process. |> If that's happening, it's becausing of misunderstandings or mis-communication, not because SGI is directly attempting to annoy our customer base. |> Maybe it's because my lab buys SGIs in onesies and twosies, so we |> aren't entitled to a "peek under the covers" as the Big Kids (NASA, |> for instance) are. This lab, and I suspect that a lot of other labs |> and organizations, doesn't have a load of money to spend on computers |> every year, so we can't be out buying new systems on a regular basis. Most SGI customers are onesy-twosey types, but regardless, we rarely give a great deal of notice when we are about to introduce a new system because again, like a previous post stated, if we pre-announced and the schedule slipped, we would mess up our potential customers schedules (when they were counting on the availability of the new systems on a particular date) and would also look awfully bad to both our investors and the financial analysts who watch us most carefully to see if we are meeting our commitments. |> The boxes that we buy now will have to last us pretty much through the |> entire grant period of five years and, in some case, beyond. That |> means that I need to buy the best piece of equipment that I can when I |> have the money, not some product that was built, to paraphrase one |> previous poster's words, 'to fill a niche' to compete with some other |> vendor. I'm going to be looking at this box for the next five years. |> And every time I look at it, I'm going to think about SGI and how I |> could have better spent my money (actually *your* money, since we're |> supported almost entirely by Federal tax dollars). |> Five years is an awfully long time in computer years. New processor technologies are arriving every 1-2 years, making a 5 year old computer at least 2 and probably 3 generations behind the times. The competitive nature of the market is demanding that rate of development, so if your timing is really 5 years between purchases, you have to accept the limited viability of whatever architecture you buy into from any vendor. There are some realities about the computer biz that we all have to live with, but keeping customers happy is the most important, so don't give up, we know it. Josh |:-) -- ************************************************************************** ** ** ** ** Joshua Mogal ** Product Manager ** ** Advanced Graphics Division ** Advanced Graphics Systems ** ** Silicon Graphics Inc. ** Market Manager ** ** 2011 North Shoreline Blvd. ** Virtual Reality ** ** Mountain View, CA 94039-7311 ** Interactive Entertainment ** ** M/S 9L-580 ** ** ** ************************************* ** Tel: (415) 390-1460 ** ** Fax: (415) 964-8671 ** ** E-mail: mogal@sgi.com ** ** ** ************************************************************************** @@@@38305.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!swrinde!ctcvax.ccf.swri.edu!trident!wcarter Subject: Rendering Software for Multi-processor Computer S Message-ID: <336@trident.datasys.swri.edu> From: wcarter@trident.datasys.swri.edu (William Carter) Date: 15 Apr 93 13:52:08 GMT Followup-To: comp.graphics Organization: Southwest Research Institute Lines: 13 Hello, I am searching for rendering software which has been developed to specifically take advantage of multi-processor computer systems. Any pointers to such software would be greatly appreciated. Thanks. -- Billy Carter, Software Engineering Section Southwest Research Institute wcarter@swri.edu @@@@38306.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!swrinde!network.ucsd.edu!news.service.uci.edu!nntpsrv From: lvandyke@balboa.eng.uci.edu (Lee Van Dyke) Subject: Wanted: map of the world type gifs Nntp-Posting-Host: balboa.eng.uci.edu Message-ID: <2BCDACCF.26469@news.service.uci.edu> Organization: University of California, Irvine Lines: 11 Date: 15 Apr 93 18:43:27 GMT Hi, can anyone direct me to map type gifs? I am interesting in cartography and would find these gifs useful. tia, -- Lee Van Dyke lvandyke@balboa.eng.uci.edu, UUCP: infotec!Infotec.COM!lee@sunkist.West.Sun.COM @@@@38307.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!howland.reston.ans.net!sol.ctr.columbia.edu!destroyer!cs.ubc.ca!newsserver.sfu.ca!sfu.ca!dkennett From: dkennett@fraser.sfu.ca (Daniel Kennett) Subject: [POV] Having trouble bump mapping a gif to a sphere Message-ID: <dkennett.734899525@sfu.ca> Summary: Having trouble bump mapping a gif to a spher in POVray Keywords: bump map Sender: news@sfu.ca Organization: Simon Fraser University, Burnaby, B.C., Canada Date: Thu, 15 Apr 1993 18:45:25 GMT Lines: 44 Hello, I've been trying to bump map a gif onto a sphere for a while and I can't seem to get it to work. Image mapping works, but not bump mapping. Here's a simple file I was working with, could some kind soul tell me whats wrong with this..... #include "colors.inc" #include "shapes.inc" #include "textures.inc" camera { location <0 1 -3> direction <0 0 1.5> up <0 1 0> right <1.33 0 0> look_at <0 1 2> } object { light_source { <2 4 -3> color White } } object { sphere { <0 1 2> 1 } texture { bump_map { 1 <0 1 2> gif "surf.gif"} } } NOTE: surf.gif is a plasma fractal from Fractint that is using the landscape palette map. Thanks in advance -Daniel- *======================================================================* | Daniel Kennett | | dkennett@sfu.ca | | "Our minds are finite, and yet even in those circumstances of | | finitude, we are surrounded by possibilities that are infinite, and | | the purpose of human life is to grasp as much as we can out of that | | infinitude." - Alfred North Whitehead | *======================================================================* @@@@38308.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!csc.ti.com!tilde.csc.ti.com!fstop.csc.ti.com!osage!talluri From: talluri@osage.csc.ti.com (Raj Talluri) Subject: Point of intersection of n lines Message-ID: <C5JGqM.Az9@csc.ti.com> Keywords: robust statistics Sender: talluri@osage (Raj Talluri) Nntp-Posting-Host: osage Organization: Texas Instruments Date: Thu, 15 Apr 1993 18:59:09 GMT Lines: 21 Hi, Can anybody suggest robust algorithms/code for computing the point of intersection on n, 2-d lines in a plane. The data has outliers and hence a simple least squares technique does not seem to provide satifactory results. Please respond by e-mail and I will post the summary to the newsgroups if there is sufficient interest. Thanks, Raj Talluri Member Technical Staff Image Understanding Branch Texas Instruments Central Research Labs Dallas, Texas 75248 talluri@csc.ti.com @@@@38309.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!ub!acsu.buffalo.edu!lusardi From: lusardi@cs.buffalo.edu (Christopher Lusardi) Subject: Program Included: 2 Edge Detection Algorithms! Message-ID: <C5JqM6.HLG@acsu.buffalo.edu> Date: 15 Apr 93 22:32:29 GMT Article-I.D.: acsu.C5JqM6.HLG Sender: nntp@acsu.buffalo.edu Organization: State University of New York at Buffalo/Comp Sci Lines: 142 Nntp-Posting-Host: hadar.cs.buffalo.edu /* This program doesn't detect edges with compass operators and a laplacian operator. It should output 2 raw grey-scale images with edges. The output doesn't look like edges at all. In novicee terms, how do I correct the errors? Any improvements are welcome. (I'll even accept your corrected code.) (If I convolve the INPUT.IMAGE with a digital gaussian [7 by 7] to remove noise, will I get an improvement with the laplacian.) --------------------------2 types of edge detection-------------------------*/ #include <stdio.h> #include <math.h> #define IMAGEWIDTH 300 #define IMAGEHEIGHT 300 unsigned char Input_Image [IMAGEHEIGHT][IMAGEWIDTH]; unsigned char Angles_Wanted [IMAGEHEIGHT][IMAGEWIDTH]; unsigned char Magnitude_Image [IMAGEHEIGHT][IMAGEWIDTH]; int Laplace_Op1 [3][3] = { 0,-1, 0, -1,4,-1, 0,-1, 0}; int Compass_Op1 [3][3] = { 1, 1, 1, 0,0, 0, -1,-1,-1}; int Compass_Op2 [3][3] = { 1, 1, 0, 1,0,-1, 0,-1,-1}; int Compass_Op3 [3][3] = { 1, 0,-1, 1,0,-1, 1, 0,-1}; int Compass_Op4 [3][3] = { 0,-1,-1, 1,0,-1, 1, 1, 0}; int Compass_Op5 [3][3] = {-1,-1,-1, 0,0, 0, 1, 1, 1}; int Compass_Op6 [3][3] = {-1,-1, 0, -1,0, 1, 0, 1, 1}; int Compass_Op7 [3][3] = {-1, 0, 1, -1,0, 1, -1, 0, 1}; int Compass_Op8 [3][3] = { 0, 1, 1, -1,0, 1, -1,-1, 0}; void Compass (row,col) int row,col; { int value; int op_rows, op_cols; int Compass1,Compass2,Compass3,Compass4; int Compass5,Compass6,Compass7,Compass8; Compass1 = Compass2 = Compass3 = Compass4 = 0; Compass5 = Compass6 = Compass7 = Compass8 = 0; for (op_rows = -1; op_rows < 2; op_rows++) for (op_cols = -1; op_cols < 2; op_cols++) { if (((row + op_rows) >= 0) && ((col + op_cols) >= 0)) { Compass1 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op1 [op_rows + 1][op_cols + 1]; Compass2 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op2 [op_rows + 1][op_cols + 1]; Compass3 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op3 [op_rows + 1][op_cols + 1]; Compass4 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op4 [op_rows + 1][op_cols + 1]; Compass5 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op5 [op_rows + 1][op_cols + 1]; Compass6 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op6 [op_rows + 1][op_cols + 1]; Compass7 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op7 [op_rows + 1][op_cols + 1]; Compass8 += ((int) Input_Image [row + op_rows][col + op_cols]) * Compass_Op8 [op_rows + 1][op_cols + 1]; } } if (Compass1 < Compass2) value = Compass2; else value = Compass1; if (value < Compass3) value = Compass3; if (value < Compass4) value = Compass4; if (value < Compass5) value = Compass5; if (value < Compass6) value = Compass6; if (value < Compass7) value = Compass7; if (value < Compass8) value = Compass8; Magnitude_Image [row][col] = (char) value; } void Laplace1 (row,col) int row,col; { int op_rows, op_cols; Magnitude_Image [row][col] = 0; for (op_rows = -1; op_rows < 2; op_rows++) for (op_cols = -1; op_cols < 2; op_cols++) if (((row + op_rows) >= 0) && ((col + op_cols) >= 0)) Magnitude_Image [row][col] = (char) ((int)Magnitude_Image [row][col] + ((int) Input_Image [row + op_rows][col + op_cols] * Laplace_Op1 [op_rows + 1][op_cols + 1])); } main () { FILE *Original_Image_fp; FILE *Laplace1_mag_fp,*Laplace2_mag_fp,*Laplace3_mag_fp; FILE *Compass_mag_fp; int row, col, Algo_Count; Original_Image_fp = fopen ("INPUT.IMAGE","rb"); Laplace1_mag_fp = fopen ("Laplace1_Magnitude","wb"); Compass_mag_fp = fopen ("Compass_Magnitude","wb"); fread ((unsigned char *) Input_Image,sizeof(unsigned char),IMAGEHEIGHT * IMAGEWIDTH,Original_Image_fp); for (Algo_Count = 0; Algo_Count < 2;Algo_Count ++) { for (row = 0; row < IMAGEHEIGHT; row++) for (col = 0; col < IMAGEWIDTH; col++) if (!Algo_Count) Laplace1 (row,col); else Compass (row,col); if (!Algo_Count) fwrite(Magnitude_Image,sizeof(char),IMAGEHEIGHT * IMAGEWIDTH,Laplace1_mag_fp); else fwrite(Magnitude_Image,sizeof(char),IMAGEHEIGHT * IMAGEWIDTH,Compass_mag_fp); } } -- | .-, ###|For a lot of .au music: ftp sounds.sdsu.edu | / / __ , _ ###|then cat file.au > /dev/audio | \_>/ >_/ (_/\_/<>_ |UB library catalog:telnet bison.acsu.buffalo.edu |_ 14261 _|(When in doubt ask: xarchie, xgopher, or xwais.) @@@@38310.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!usc!acsc.com!cpuserver.acsc.com!robert From: robert@cpuserver.acsc.com (Robert Grant) Subject: Re: Virtual Reality for X on the CHEAP! Date: 15 Apr 1993 20:20:25 GMT Organization: USCACSC, Los Angeles Lines: 32 Distribution: world Message-ID: <1qkg29$dsl@acsc.com> References: <1qhun7$6po@acsc.com> <1qi19q$6t2@acsc.com> <1993Apr15.134802.21995@mfltd.co.uk> Reply-To: robert@cpuserver.acsc.com (Robert Grant) NNTP-Posting-Host: cpuserver.acsc.com Hi Steve, As the author of Multiverse, I feel I had better respond to your mailnote questioning whether anyone had managed to compile this software - the quick answer is yes! The long answer is yes - but a few have had a few problems with their platforms - not all unix's are the same, you know! As far as "many bugs" go, it would probably be more useful to everyone (including you) if you were a bit more explicit! :-) Platforms it has succesfully compiled and run on are: RS6000, Dec Ultrix Sun Solaris so it is possible. The main problem is that I don't have access to other platforms than the RS6000, so if there are portability problems then the only way I hear about them is by people letting me know and giving me a clue as to how to fix it. As far as the software not doing anything, do you really think I would bother releasing it, if that was the case? Perhaps you didn't read the few docs that ARE supplied. The dogfight world is made up of clients only, so if you're in there on your own, then you're not going to see anything! The dactyl world has quite a lot of scenary - so if you don't see anything there, then this is definitely a problem! One final word - if you're not interested, don't bother with it. If you are interested, then please remember that I'm not asking for any money! So why not try a little patience and constructive criticism, maybe that will get results?? Robert. robert@acsc.com @@@@38311.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!malgudi.oar.net!news.ysu.edu!psuvm!cunyvm!nt3qc Organization: City University of New York Date: Thursday, 15 Apr 1993 11:08:26 EDT From: <NT3QC@CUNYVM.BITNET> Message-ID: <93105.110826NT3QC@CUNYVM.BITNET> Subject: RE: Hot new 3D software Lines: 16 I don't think speed has been determined, since it has never run on Intel chips. But on the Amiga's Motorola Chips, it was one of the fastest true 'Ray Tracers' I don't think Impulse would port it over and not take speed into consideration. In terms of features, and learning curve... ALL that you stated for 3DS is also true for Imagine, and lots more... But I'll have to admit that after 3 years of use on the Amiga, the learning curve is very steep. This is due ONLY to the manual. It is realy BAD. However, there is a lot of after market support for this product, including regular 'Tips' articles in many magazines such as "AVID and a great book by Steve Worley called "Understanding Imagine 2.0" This book i is not just recommened, IT IS A MUST! I think an important consideration should be price...... $3000 for 3DS (Not including "tool" packages) Under $500 for Imagine complete. @@@@38312.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!destroyer!news.itd.umich.edu!spencer From: spencer@med.umich.edu (Spencer W. Thomas) Subject: Re: cylinder and ray Date: 15 Apr 93 16:23:36 Organization: University of Michigan HSITN Lines: 17 Message-ID: <SPENCER.93Apr15162336@guraldi.med.umich.edu> References: <1qc1fgINNbv4@darkstar.UCSC.EDU> <1993Apr15.040423.3889@zip.eecs.umich.edu> NNTP-Posting-Host: guraldi.itn.med.umich.edu In-reply-to: katkere@krusty.eecs.umich.edu's message of Thu, 15 Apr 1993 04:04:23 GMT Sketch: Rotate so cylinder axis is || Z axis. Intersect X/Y projection of line with projected cylinder (similar to, but easier than, sphere intersection). Result: no intersection, one intersection, or two intersections, parameterized along line by t0 and t1. Now look at Z, and compute intersections of line with top and bottom planes of cylinder. This gives t0' and t1'. The interval of intersection is then the bit of the line from [t0,t1] INTERSECT [t0',t1']. Details left as an exercise for the reader. =S -- =Spencer W. Thomas | Info Tech and Networking, B1911 CFOB, 0704 "Genome Informatician" | Univ of Michigan, Ann Arbor, MI 48109 Spencer.W.Thomas@med.umich.edu | 313-764-8065, FAX 313-764-4133 @@@@38313.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!carson.u.washington.edu!bolson From: bolson@carson.u.washington.edu (Edward Bolson) Subject: Sphere from 4 points? Date: 15 Apr 1993 20:25:34 GMT Organization: University of Washington, Seattle Lines: 18 Distribution: world Message-ID: <1qkgbuINNs9n@shelley.u.washington.edu> NNTP-Posting-Host: carson.u.washington.edu Boy, this will be embarassing if it is trivial or an FAQ: Given 4 points (non coplanar), how does one find the sphere, that is, center and radius, exactly fitting those points? I know how to do it for a circle (from 3 points), but do not immediately see a straightforward way to do it in 3-D. I have checked some geometry books, Graphics Gems, and Farin, but am still at a loss? Please have mercy on me and provide the solution? Thanks, Ed -- Ed Bolson University of Washington Cardiovascular Research (206)543-4535 bolson@u.washington.edu (preferred) bolson@max.bitnet bolson@milton.u.washington.edu (if you must) @@@@38314.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!husc-news.harvard.edu!husc11.harvard.edu!eekim Subject: [ANNOUNCE] Ivan Sutherland to speak at Harvard Message-ID: <1993Apr16.155236.22949@husc3.harvard.edu> From: eekim@husc11.harvard.edu (Eugene Kim) Date: 16 Apr 93 15:52:35 EDT Distribution: harvard Organization: Harvard University Science Center Nntp-Posting-Host: husc11.harvard.edu Lines: 21 The Harvard Computer Society is pleased to announce its third lecture of the spring. Ivan Sutherland, the father of computer graphics and an innovator in microprocessing, will be speaking at Harvard University on Tuesday, April 20, 1993, at 4:00 pm in Aiken Computations building, room 101. The title of his talk is "Logical Effort and the Conflict over the Control of Information." Cookies and tea will be served at 3:30 pm in the Aiken Lobby. Admissions is free, and all are welcome. Aiken is located north of the Science Center near the Law School. For more information, send e-mail to eekim@husc.harvard.edu. The lecture will be videotaped, and a tape will be made available. Thanks. -- Eugene Kim '96 | "Give me a place to stand, and I will INTERNET: eekim@husc.harvard.edu | move the earth." --Archimedes @@@@38315.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!cs.utk.edu!ornl!sacam.OREN.ORTN.EDU!ednobles From: ednobles@sacam.OREN.ORTN.EDU (Edward d Nobles) Subject: windows imagine??!! Message-ID: <1993Apr15.231246.7252@ornl.gov> Sender: usenet@ornl.gov (News poster) Organization: Oak Ridge National Laboratory X-Newsreader: TIN [version 1.1 PL9] Date: Thu, 15 Apr 1993 23:12:46 GMT Lines: 10 Has ANYONE who has ordered the new PC version of Imagine ACTUALLY recieved it yet? I'm just about ready to order but reading posts about people still awaiting delivery are making me a little paranoid. Has anyone actually held this piece of software in their own hands? Later, Jim Nobles @@@@38316.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!bb3.andrew.cmu.edu!news.sei.cmu.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!uunet!destroyer!cs.ubc.ca!news.UVic.CA!spang.Camosun.BC.CA!suncad.camosun.bc.ca!morley From: morley@suncad.camosun.bc.ca (Mark Morley) Subject: VGA Mode 13h Routines Available Message-ID: <1993Apr15.210943.7593@spang.Camosun.BC.CA> Sender: news@spang.Camosun.BC.CA (Network News) Nntp-Posting-Host: suncad.camosun.bc.ca Organization: Camosun College, Victoria B.C, Canada X-Newsreader: Tin 1.1 PL4 Date: Thu, 15 Apr 1993 21:09:43 GMT Lines: 31 Hi there, I've made a VGA mode 13h graphics library available via FTP. I originally wrote the routines as a kind of exercise for myself, but perhaps someone here will find them useful. They are certainly useable as they are, but are missing some higher-level functionality. They're intended more as an intro to mode 13h programming, a starting point. *** The library assumes a 386 processor, but it is trivial to modify it *** for a 286. If enough people ask, I'll make the mods and re-post it as a *** different version. The routines are written in assembly (TASM) and are callable from C. They are fairly simple, but I've found them to be very fast (for my purposes, anyway). Routines are included to enter and exit mode 13h, define a "virtual screen", put and get pixels, put a pixmap (rectangular image with no transparent spots), put a sprite (image with see-thru areas), copy areas of the virtual screen into video memory, etc. I've also included a simple C routine to draw a line, as well as a C routine to load a 256 color GIF image into a buffer. I also wrote a quick'n'dirty(tm) demo program that bounces a bunch of sprites around behind three "windows". The whole package is available on spang.camosun.bc.ca in /pub/dos/vgl.zip It is zipped with pkzip 2.04g It is completely in the public domain, as far as I'm concerned. Do with it whatever you like. However, it'd be nice to get credit where it's due, and maybe an e-mail telling me you like it (if you don't like it don't bother) Mark morley@camosun.bc.ca @@@@38317.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!bcstec!rgc3679 From: rgc3679@bcstec.ca.boeing.com (Robert G. Carpenter) Subject: Re: Please Recommend 3D Graphics Library For Mac. Message-ID: <C5JG6o.2vz@bcstec.ca.boeing.com> Organization: Boeing References: <2BCCDC27.25436@ics.uci.edu> <1qjt05$4lc@access.digex.net> Date: Thu, 15 Apr 1993 18:47:11 GMT Lines: 9 I searched the U Mich archives fairly thoroughly for 3D graphics packages, I always thought it to be a mirror of sumex-aim.stanford.edu... I was wrong. I'll look into GrafSys... it does sound interesting! Thanks Cheinan. BobC @@@@38318.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!bcstec!rgc3679 From: rgc3679@bcstec.ca.boeing.com (Robert G. Carpenter) Subject: Re: Please Recommend 3D Graphics Library F Message-ID: <C5Jr22.Hsz@bcstec.ca.boeing.com> Organization: Boeing References: <2BCCDC27.25436@ics.uci.edu> <1993Apr15.134211.11170@shearson.com> Date: Thu, 15 Apr 1993 22:42:00 GMT Lines: 13 Sorry about not mentioning platform... my original post was to mac.programmer, and then decided to post here to comp.graphics. I'd like the 3D software to run on primarily Mac in either C, Object Pascal (Think or MPW). But, I'll port to Windows later, so a package that runs on Mac and has a Windows version would be ideal. I'm looking for a package that has low upfront costs, and reasonable licensing costs... of course :) BobC @@@@38319.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!howland.reston.ans.net!bogus.sura.net!darwin.sura.net!sgiblab!nec-gw!nec-tyo!wnoc-tyo-news!hitwide!hinocgw!hcrlgw92!hcrlgw!steve From: steve@hcrlgw (Steven Collins) Subject: Re: Sphere from 4 points? Message-ID: <2406@hcrlgw92.crl.hitachi.co.jp> Date: 16 Apr 93 00:55:29 GMT References: <1qkgbuINNs9n@shelley.u.washington.edu> Sender: news@hcrlgw92.crl.hitachi.co.jp Organization: Central Research Lab. Hitachi, Ltd. Lines: 27 Nntp-Posting-Host: hcrlgw In article <1qkgbuINNs9n@shelley.u.washington.edu> bolson@carson.u.washington.edu (Edward Bolson) writes: >Boy, this will be embarassing if it is trivial or an FAQ: > >Given 4 points (non coplanar), how does one find the sphere, that is, >center and radius, exactly fitting those points? I know how to do it >for a circle (from 3 points), but do not immediately see a >straightforward way to do it in 3-D. I have checked some >geometry books, Graphics Gems, and Farin, but am still at a loss? >Please have mercy on me and provide the solution? Wouldn't this require a hyper-sphere. In 3-space, 4 points over specifies a sphere as far as I can see. Unless that is you can prove that a point exists in 3-space that is equi-distant from the 4 points, and this may not necessarily happen. Correct me if I'm wrong (which I quite possibly am!) steve --- -- +---------------------------------------+--------------------------------+ | Steven Collins | email: steve@crl.hitachi.co.jp | | Visiting Computer Graphics Researcher | phone: (0423)-23-1111 | | Hitachi Central Research Lab. Tokyo. | fax: (0423)-27-7742 | @@@@38320.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!decwrl!netcomsv!netcom.com!spworley From: spworley@netcom.com (Steve Worley) Subject: Re: Sphere from 4 points? Message-ID: <spworleyC5Jy7r.6Bo@netcom.com> Organization: NETCOM On-line Communication Services (408 241-9760 guest) References: <1qkgbuINNs9n@shelley.u.washington.edu> Date: Fri, 16 Apr 1993 01:16:38 GMT Lines: 38 bolson@carson.u.washington.edu (Edward Bolson) writes: >Boy, this will be embarassing if it is trivial or an FAQ: >Given 4 points (non coplanar), how does one find the sphere, that is, >center and radius, exactly fitting those points? I know how to do it >for a circle (from 3 points), but do not immediately see a >straightforward way to do it in 3-D. I have checked some >geometry books, Graphics Gems, and Farin, but am still at a loss? >Please have mercy on me and provide the solution? It's not a bad question: I don't have any refs that list this algorithm either. But thinking about it a bit, it shouldn't be too hard. 1) Take three of the points and find the plane they define as well as the circle that they lie on (you say you have this algorithm already) 2) Find the center of this circle. The line passing through this center perpendicular to the plane of the three points passes through the center of the sphere. 3) Repeat with the unused point and two of the original points. This gives you two different lines that both pass through the sphere's origin. Their interection is the center of the sphere. 4) the radius is easy to compute, it's just the distance from the center to any of the original points. I'll leave the math to you, but this is a workable algorithm. :-) An alternate method would be to take pairs of points: the plane formed by the perpendicular bisector of each line segment pair also contains the center of the sphere. Three pairs will form three planes, intersecting at a point. This might be easier to implement. -Steve spworley@netcom.com @@@@38321.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!emory!cs.utk.edu!ornl!fnnews.fnal.gov!adnet13.fnal.gov!user From: HURH@FNAL.FNAL.GOV (Patrick Hurh) Subject: Rayshade to DXF,RIB,etc.. (Strata)? Followup-To: comp.graphics Date: 16 Apr 1993 01:40:08 GMT Organization: FNAL Lines: 30 Distribution: world Message-ID: <HURH-150493193649@adnet13.fnal.gov> NNTP-Posting-Host: adnet13.fnal.gov I'm a mac user who wants to use some of the rayshade models I've built using macrayshade (rayshade-M) with Stratavision 3d. Since Stratavision can import many different model files I thought this would be a cinch... but I haven't been able to find a simple translator that will work on the mac. Any ideas? Stratavision 3d should be able to import: DXF MiniCAD Super 3d Swivel 3d professional out of the box and: RIB IGS with externals. Also, if anyone knows of any other translator externals available for Stratavision 3d (esp. Rayshade!) please e-mail me! BTW, I'm going to send mail to the rayshade usrs mailing list tomorrow (I misplaced the address) but since most users of rayshade do not seem to operate with macs, I'm not getting my hopes up... thanks in advance, --patrick. hurh@fnal.fnal.gov @@@@38322.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!agate!dog.ee.lbl.gov!network.ucsd.edu!rutgers!fdurt1.fdu.edu!wisdom.bubble.org!sugra!ken From: ken@sugra.uucp (Kenneth Ng) Subject: Re: Stay Away from MAG Innovision!!! Message-ID: <1993Apr16.003114.6828@sugra.uucp> Date: 16 Apr 93 00:31:14 GMT References: <1993Apr10.014106.13338@lynx.dac.northeastern.edu: <1993Apr12.114727.7059@walter.cray.com> Organization: Private Computer, Totowa, NJ Lines: 22 In article <1993Apr12.114727.7059@walter.cray.com: huot@cray.com (Tom Huot) writes: :Peter Clark (pclark@lynx.dac.northeastern.edu) wrote: :: Interesting. You seem to be the only person I have ever heard of who :: has had a problem with MAG like that. I have a MAG MX15F myself, no :: problems. I liked it so much I showed it to a bunch of my friends: 6 of :: them went out and bought them, no problems. All Gateway 2000 Crystal :: Scan monitors are MAG Innovisions. I've not heard many Gateway people :: griping about their monitors. Seems like you got the bad apple. :You haven't heard Gateway customers griping about their monitors? :Where have you been? I have never seen as many complaints on the :net about anything else above the famous GW CS monitor flamefest. The bulk of the GW CS monitor complaints (to which I can add my complaint) is for the older monitor that really comes from Tatung. After getting mine repaired by Tatung a year ago, it is starting to flake out again. I'll be looking into NEC3DS and MAG 15F for my next monitors. -- Kenneth Ng Please reply to ken@blue.njit.edu for now. "All this might be an elaborate simulation running in a little device sitting on someone's table" -- J.L. Picard: ST:TNG @@@@38323.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!spool.mu.edu!sol.ctr.columbia.edu!usenet.ucs.indiana.edu!depaul!falcon.depaul.edu!dkusswur From: dkusswur@falcon.depaul.edu (Daniel C. Kusswurm) Subject: Siggraph 1987 Course Notes Nntp-Posting-Host: falcon.depaul.edu Sender: dkusswur@falcon.depaul.edu Organization: DePaul University, Chicago Date: Fri, 16 Apr 1993 03:40:04 GMT Message-ID: <1993Apr16.034004.24814@hal.depaul.edu> Distribution: usa Lines: 7 I am looking for a copy of the following Siggraph publication: Gomez, J.E. "Comments on Event Driven Annimation," Siggraph Course Notes, 10, 1987. If anyone knows of a location where I can obtain a copy of these notes, I would appreciate if they could let me know. Thanks. dkusswur@falcon.depaul.edu @@@@38324.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!gatech!howland.reston.ans.net!bogus.sura.net!darwin.sura.net!sgiblab!tsoft!mirage From: bbs.mirage@tsoft.net (Jerry Lee) Subject: Cobra 2.0 1-b-1 Video card HELP ME!!!! Message-ID: <XsZ32B1w165w@tsoft.net> Sender: bbs@tsoft.net Organization: The TSoft BBS and Public Access Unix, +1 415 969 8238 Date: Fri, 16 Apr 1993 04:03:44 GMT Lines: 22 Does ANYONE out there in Net-land have any information on the Cobra 2.20 card? The sticker on the end of the card reads Model: Cobra 1-B-1 Bios: Cobra v2.20 I Havn't been able to find anything about it from anyone! If you have any information on how to get a hold of the company which produces the card or know where any drivers are for it, PLEASE let me know! As far as I can tell, it's a CGA card that is taking up 2 of my 16-bit ISA slots but when I enable the test patterns, it displays much more than the usualy 4 CGA colors... At least 16 from what I can count.. Thanks! .------------------------------------------. : Internet: jele@eis.calstate.edu : : bbs.mirage@gilligan.tsoft.net : : bbs.mirage@tsoft.sf-bay.org : : mirage@thetech.com : : UUCP : apple.com!tsoft!bbs.mirage : `------------------------------------------' Computer and Video Imaging Major @@@@38325.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!noc.near.net!uunet!pipex!sunic!seunet!piraya!overdose!Lars.Jorgensen From: Lars.Jorgensen@p7.syntax.bbs.bad.se (Lars Jorgensen) Subject: Externel processes for 3D Studio Message-ID: <OA92-910-0p7_2bce279e@piraya.bad.se> Date: Thu, 15 Apr 93 23:27:08 +0100 Sender: BadNet@piraya.bad.se Reply-To: Lars.Jorgensen@p7.syntax.bbs.bad.se (Lars Jorgensen) Distribution: world Organization: Nr. 5 p} NatR}b OD-Comment-To: Internet_Gateway Lines: 13 To:All Hi, Does anybody have the source code to the externel processes that comes with 3D Studio, and mabe som kind of DOC for writing the processes your self. /Lars +++ Author: Lars_Jorgensen@p7.syntax.bbs.bad.se, Syntax BBS, Denmark --- GoldED 2.41 @@@@38326.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!noc.near.net!uunet!mcsun!hp4at!sk2eu!cvtstu!cvtstu.cvt.stuba.cs!valo From: valo@cvtstu.cvt.stuba.cs (Valo Roman) Subject: Re: Text Recognition software availability Date: Fri, 2 Apr 1993 05:31:39 GMT Organization: Slovak Technical University Bratislava, Slovakia Lines: 23 Sender: news@cvtstu.cvt.stuba.cs (NetNews administrator at cvtstu) Message-ID: <C4uCos.8rs@cvtstu.cvt.stuba.cs> References: <1993Mar25.125409.18230@mksol.dseg.ti.com> <C4IHqM.7v3@mentor.cc.purdue.edu> NNTP-Posting-Host: sk2eu.eunet.sk ReplyTo: valo@cvtstu.cvt.stuba.cs (Valo Roman) In article <C4IHqM.7v3@mentor.cc.purdue.edu>, ab@nova.cc.purdue.edu (Allen B) writes: |> One more time: is there any >free< OCR software out there? |> |> I ask this question periodically and haven't found anything. This is |> the last time. If I don't find anything, I'm going to write some |> myself. |> |> Post here or email me if you have any leads or suggestions, else just |> sit back and wait for me. :) |> |> ab I'm not sure if this is free or shareware, but you can try to look to wsmrsimtel20.army.mil, directory PD1:<MSDOS.DESKPUB> file OCR104.ZIP . From the file SIMIBM.LST : OCR104.ZIP B 93310 910424 Optical character recognition for scanners. Hope this helps. Roman Valo valo@cvt.stuba.cs Slovak Technical University Bratislava Slovakia @@@@38327.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!newsserver.jvnc.net!newsserver.technet.sg!iti.gov.sg!johne From: johne@iti.gov.sg (Dr. John S. Eickemeyer) Subject: Re: Sphere from 4 points? Message-ID: <1993Apr16.060044.14644@iti.gov.sg> Sender: news@iti.gov.sg (News Admin) Organization: Information Technology Institute, National Computer Board, Singapore. References: <1qkgbuINNs9n@shelley.u.washington.edu> Date: Fri, 16 Apr 1993 06:00:44 GMT Lines: 37 In article <1qkgbuINNs9n@shelley.u.washington.edu> bolson@carson.u.washington.edu (Edward Bolson) writes: >Boy, this will be embarassing if it is trivial or an FAQ: >center and radius, exactly fitting those points? I know how to do it >for a circle (from 3 points), but do not immediately see a >straightforward way to do it in 3-D. I have checked some >geometry books, Graphics Gems, and Farin, but am still at a loss? >Please have mercy on me and provide the solution? Off the top of my head, I might try: Given: p_1, p_2, p_3, p_4 Find: p_c (center of sphere determined by p_1, ..., p_4), dist(p_c, p_i) (radius) p_c is the same distance from our four points, so dist(p_c,p_1) = dist(p_c,p_2) = dist(p_c,p_3) = dist(p_c,p_4) Of course, we can square the whole thing to get rid of square roots: distsq(p_c,p_1) = distsq(p_c,p_2) = distsq(p_c,p_3) = distsq(p_c,p_4) Plug in the variables into the distance formula, simplify, and the x^2_c, y^2_c, and z^2_c terms cancel out, leaving you with three linearly independent equations and three unknowns (x_c, y_c, z_c). Solve using your favorite method. :) All the best, - John :) ------------------------------------------------------------------------------- Dr. John S. Eickemeyer :: "The Lord God is subtle, Information Technology Institute :::: but malicious He is not." National Computer Board, Singapore :: Email: johne@iti.gov.sg :: - Albert Einstein ------------------------------------------------------------------------------- @@@@38328.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!decwrl!pa.dec.com!nestvx!neideck From: neideck@nestvx.enet.dec.com (Burkhard Neidecker-Lutz) Subject: Re: Rumours about 3DO ??? Date: 16 Apr 1993 06:49:39 GMT Organization: CEC Karlsruhe Lines: 17 Message-ID: <1qlku3INNkp@usenet.pa.dec.com> References: <1993Apr15.143444.32980@rchland.ibm.com> <1993Apr15.143444.32980@rchland.ibm.com> <1993Apr15.164940.11632@mercury.unt.edu> NNTP-Posting-Host: NESTVX In article <1993Apr15.164940.11632@mercury.unt.edu> Sean McMains <mcmains@unt.edu> writes: >Wow! A 68070! I'd be very interested to get my hands on one of these, >especially considering the fact that Motorola has not yet released the >68060, which is supposedly the next in the 680x0 lineup. 8-D The 68070 is a variation of the 68010 that was done a few years ago by the European partners of Motorola. It has some integrated I/O controllers and half a MMU, but otherwise it's a 68010. Think of it the same as the 8086 and 80186 were. Burkhard Neidecker-Lutz Distributed Multimedia Group, CEC Karlsruhe EERP Portfolio Manager Software Motion Pictures & BERKOM II Project Multimedia Base Technology Digital Equipment Corporation neidecker@nestvx.enet.dec.com @@@@38329.txt&&&&comp.graphics&&&&Path: cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!fs7.ece.cmu.edu!europa.eng.gtefsd.com!howland.reston.ans.net!zaphod.mps.ohio-state.edu!cs.utexas.edu!uunet!munnari.oz.au!goanna!escargot!melomys!rcomg From: rcomg@melomys.co.rmit.oz.AU (Mark Gregory) Subject: AVI file format? Summary: AVI file format? Keywords: