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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
+
+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 ]
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+                                                                [Page 3]
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