From 4bfd864f10b68b71482b35c818559068ef8d5797 Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Wed, 27 Nov 2024 20:54:24 +0100 Subject: doc: Add RFC documents --- doc/rfc/rfc174.txt | 165 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 doc/rfc/rfc174.txt (limited to 'doc/rfc/rfc174.txt') diff --git a/doc/rfc/rfc174.txt b/doc/rfc/rfc174.txt new file mode 100644 index 0000000..c443d47 --- /dev/null +++ b/doc/rfc/rfc174.txt @@ -0,0 +1,165 @@ + + + + + + +NWG J. Postel, V. Cerf +RFC # 174 UCLA-NMC +NIC # 6799 Computer Science +Categories: D.6,I.1 8 June 71 +References: 134 +Obsoletes: none + + UCLA-Computer Science Graphics Overview + +I. Hardware + + A. Imlac PDS-1 + + We have 2 PDS-1 graphics consoles each with 8K 16 bit words + of memory. + + The display screens are mounted with the long axis vertical. + + B. DEC 340 + + We have a DEC 340 Display Station with a light pen. Associ- + ated with the station are a Rand Tablet and a Lincoln Wand. + There is a display processor which drives the DEC 340 which + reads its instruction from the XDS Sigma 7 memory via dedi- + cated memory port. + +II. Software + + A. Imlacs + + We have not as yet developed any software for the PDS-1. + We have used the Imlac provided text and graphics support + software to utilize the PDS-1's as alphameric and limited + graphics consoles (at 1200 baud). + + These are used only with the SEX timesharing system. + + B. DEC 340 + + We have over several years developed a package of Library + routines* which interface to FORTRAN programs for use with + the DEC 340 and its associated devices. This station is + used only with a stand alone system (RAD 75). + + Several programs have been implemented using these facilities + among them are: + +*SMOG (sub-program manager for On-Line Graphics). + + + + [Page 1] + +NWG J. Postel, V. Cerf +RFC # 174 UCLA-NMC +NIC # 6799 Computer Science + 8 June 71 + + + + 1. MOSAIC + + MOSAIC is an experimental computer graphics program + which permits a user to manipulate the parameters of + a fairly complex polar co-ordinate equation. The ob- + ject is to explore the space of interesting images + which can be produced. Library facilities are provid- + ed so that the user can save interesting images. He + can also combine the images in many ways to form mo- + saic-like patterns. An Arriflex 16mm camera can be + driven through the use of this program, and we have + used the system to generate several films which serv- + ed as a basis for video-graphics experiments (TV video- + tape). + + + 2. FISHEYE + + Using the interactive part of MOSAIC, and a peculiar, + exponential mapping function, studies were made in the + presentation of CRT images too large to fit in normal + form on our 10" scope. The images are mapped in such + a way that part of the image is shown at linear scale, + the remainder being squeezed up at the outer edges of + the screen. Thus, the global image is always visible, + but details are apparent mainly in the linear region. + This study formed the basis of an M.S. thesis. + + + 3. MOVIE + + This is a movie script language which allows the user + to compose a scenario describing the entrance and exit + of images on the CRT. Mosaics can be created. Images + can fade-in, fade-out, dissolve, expand, zoom, contract, + Dramatis personae (in the form of MOSAIC images) can + be defined and their movements described. The program + computes the movements of all images for the duration + of the film and then calls on the MOSAIC generating + routines to make the film. Camera control is automa- + tic. + + + + [Page 2] + +NWG J. Postel, V. Cerf +RFC # 174 UCLA-NMC +NIC # 6799 Computer Science + 8 June 71 + + +III. Intentions + + A. Imlacs + + We intend to equip our PDS-1's with the mouse and keyset + configuration used at SRI-ARC. We intend to attempt to + make use of PDS-1 programs developed at other sites. We + intend to develop an assembler for PDS-1 programs. We are + thinking about a subroutine Library for PDS-1 graphics for + FORTRAN (or other higher level languages). + + + B. DEC 340 + + We intend eventually to bring the DEC 340 hardware and soft- + ware facilities into the SEX system. + + + + [ This RFC was put into machine readable form for entry ] + [ into the online RFC archives by Ignacio Goyret 6/97 ] + + + + + + + + + + + + + + + + + + + + + + + + + [Page 3] + -- cgit v1.2.3