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Sketch pad a man-machine graphical communication system |
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Notes for this articleI had no idea that a system such as this was possible in 1963. The detailed description of the system and how it works painted a rich picture of the state of the art at that time.
Though it didn't appear until the conclusion, I appreciated the specific caveat that the system is only beneficial when drawing on the computer provides a sufficient benefit over drawing on paper, and that there were a limited number of cases at that time. Of course, as was pointed out in the paper, the system enables new applications such as simulating drawn circuits. Though a circuit simulation program was yet to be developed, the Sketchpad made the effort to write the simulation program more more worthwhile.
wants to make interaction more direct. All light pen based (Except captions) but also used custom buttons to introduce modes. graphical constraints introduced. drawings are hierarchies of subpictures. copying of "definitions" supported.
From a tools perspective, one interesting feature of sketchpad is that it was designed for easy expandability (essentially, adding library elements, something we'll see again later as an issue in tools)
has support for interactive "debugging" almost, not sure if that's the motivation -- displaying constraints, values for points, etc. in a manipulable way
Then discusses applications from (unnamed) animation to computing stresses on a bridge through constraints to circuit diagrams
Future work reviews a 3d interactive system (still doesn't exist :); early vision work;
Grand vision is simply the power of direct graphical interaction; plus constraints
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Posting History
AbstractThis paper was reproduced from the AFIPS Conference proceedings, Volume 23, of the Spring Joint Computer Conference held in Detroit, 1963. Mr. Timothy Johnson suggested that this report contained essentially the same material he spoke on at the SHARE D/A Committee Workshop.
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