Method and apparatus for cursor movement control
AssigneeInternational Business Machines Corporation
InventorsKazuyoshi Hidaka, Masanori Akaishi
Life of this patent
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Abstract
A method for moving a cursor while constrained on a selected, displayed graphics object displayed on a display screen. Entering a signal for pointing to a position on the display screen, determining a point on the display screen in response to the entered signal, determining a point on the graphics object which is near to the point determined on the display screen, and displaying a cursor at the point determined on the graphics object.
Claims13
A method for moving a cursor on one of a plurality of graphics objects displayed on a display screen, comprising the steps of:
- (a) entering a signal for pointing to a position on the display screen;
- (b) determining a point on the display screen in response to the signal entered in step (a);
- (c) selecting a particular graphics object of said plurality of graphics objects;
- (d) determining a point on said particular graphics object which is near to the point determined in step (b);
- (e) displaying a cursor at the point determined in step (d);
- and
- (f) repeating said steps (a) to (e) until a signal indicative of a cursor constraint release is entered.
A method for moving a cursor on one of a plurality of graphics objects represented by a continuous series of segments on a display screen, comprising the steps of:
- (a) entering a signal for pointing to a position on the display screen;
- (b) selecting a particular graphics object of said plurality of graphics objects;
- (c) determining a segment li from the continuous series of segments displayed on the display screen and a point Qi on the display screen, in response to the signal entered in step (a);
- (d) determining a point Pi that is a projection of said point Qi onto the segment li;
- (e) displaying a cursor at said point Pi;
- and
- (f) repeating said steps (a) to (e) until a signal indicative of a cursor constraint release is entered.
Dependencies are inferred from the claim text.