Pictorial Janus Really!

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Pictorial Janus at C-LAB and Heinz Nixdorf Institut

Pictorial Janus at Paderborn is a joint effort of Marita Duecker, Christian Geiger, Ralf Hunstock, Georg Lehrenfeld, Wolfgang Mueller, and Christoph Tahedl.

Pictorial Janus (PJ) was developed by Kahn and Saraswat (Xerox PARC, 1989). PJ is a complete visual programming language based on the concepts of parallel, constraint-oriented textual programming language Janus.

Our introduction is available as a set of annotated transparencies.

Our Pictorial Janus capture and animation environment JIM (Janus In Motion) implements an interactive Pictorial Janus debugging environment.
Some Pictorial Janus animations generated by JIM are available as MPEG videos:

INRES Protocol System Level Animation (601 K),
Append Component Level Animation (827 K),
Color Sorting Assembly Buffer Component Level Animation (3150 K).

Application-oriented 3-D animation under OpenInventor as MPEG movies are available for:

Color Sorting Assembly Buffer

Our current investigations additionally covers 3-D Pictorial Janus. Fly Pictorial Janus programs as VRML 1.0:

Our PJ-Related Publications

Links to other PJ and PJ-Related Sites

Xerox PARC's ftp server provides some PJ movies and examples.
Volker Haarslev provides some PJ animations (MPEG and Quicktime) and PJ publications. His articles cover work on PJ's formal semantics and a PJ introduction.
John Gooday has written some articles on PJ's formal syntax and semantics.
Ken Kahn's ToonTalk is is a video-game-based programming language/environment for kids.