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- 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
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- 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).
-
-
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- [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 ]
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- [Page 3]
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