Communications: electrical – Visual indication – Movable
Patent
1990-02-14
1991-05-28
Brier, Jeffery A.
Communications: electrical
Visual indication
Movable
340706, 340727, 340729, G09G 500
Patent
active
050198092
ABSTRACT:
A technique using a 2-dimensional input controller such as a mouse, a 2-D trackball, a joystick, a touch screen, a touch tablet or a digitizer for rotating an object displayed by a computer controlled video display system in 3-dimensional representation. A user visible reference circle is provided, and a pointer associated with the 2-D input controller is moved by the user relative to the reference circle in a control movement mode. Movement of the pointer within the reference circle produces rotation of the displayed object about arbitrary axes in 3-dimensional space, while movement of the pointer on or outside the reference circle produces rotation about a 3-dimensional axis that is oriented toward the viewer.
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Brier Jeffery A.
University of Toronto - Innovations Foundation
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