Graphic display region defining technique
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United States of America Patent
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Feb 28, 1989
Grant Date -
N/A
app pub date -
Dec 2, 1985
filing date -
Dec 2, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A region defining technique for use with a computer aided design system, including a geometry specification step and a loop-chasing step which together locate the complete set of sequences of linked elements which defines the inner and outer boundaries of the region of interest in response to a single user input identifying which region is of interest. The technique permits a user with a single 'pick' to select a desired region of the display for further processing such as cross-hatching or extrusion, and provides a variety of useful applications not previously offered in commercially available computer aided design systems.
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