Technique for providing improved user feedback in an interactive

Details Technique for providing improved user feedback in an interactive Technique for providing improved user feedback in an interactive

1991-10-08

1994-12-06

Zimmerman, Mark K.

395133, 395919, G06F 1560

Patent

active

053718453

ABSTRACT:
System and methods for the creation of graphic images include automatic pull-off creation and maintenance of tangent and perpendicular lines, creation and maintenance of objects satisfying mutual geometric relationships, the identification and processing of visual intersections, and alignment in 3D space. Other techniques of the present invention include the automatic recognition of interesting points, the use of screen messages to identify points, the use of a secondary cursor, the creation of temporary geometry, the examination of interesting points which arise from actual geometry, temporary geometry, and/or the interaction of actual and temporary geometry, and precise graphic operations (e.g., drawing and transformations) with the assistance of interesting points.

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