Dynamic control of zoom operation in computer graphics
First Claim
1. A method for displaying a graphical space on a screen display, comprising the steps of:
- positioning a cursor at a preselected position on said screen display such that a reference location is fixed at said preselected position;
providing an object defining a predetermined area on said screen display, said reference location being substantially located on a border of said predetermined area;
moving said cursor from said reference location on said screen display in a direction in which said graphical space is to be selectively enlarged or reduced on said screen such that a line between said cursor and said reference location is provided on said screen display to indicate said direction; and
displaying the enlarged or reduced graphical space on said screen display on the basis of said line.
1 Assignment
0 Petitions
Accused Products
Abstract
Various objects, images, pictures, etc. are selectively enlarged or reduced on a screen using a zoom operation. To view an object, for example, on the screen with less details or more details than the current display of the object, a cursor positioned on the screen display using an input device is utilized to fix a reference location located on a circle of a predetermined diameter. By moving the cursor on the screen display, a line between the cursor and the reference location is provided. The direction of the line indicates direction of the zoom operation: if the line is inside the circle, the object is zoomed-out, and if the line is outside the circle, the object is zoomed in. The length of the line determines speed of the zoom operation.
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Citations
18 Claims
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1. A method for displaying a graphical space on a screen display, comprising the steps of:
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positioning a cursor at a preselected position on said screen display such that a reference location is fixed at said preselected position; providing an object defining a predetermined area on said screen display, said reference location being substantially located on a border of said predetermined area; moving said cursor from said reference location on said screen display in a direction in which said graphical space is to be selectively enlarged or reduced on said screen such that a line between said cursor and said reference location is provided on said screen display to indicate said direction; and displaying the enlarged or reduced graphical space on said screen display on the basis of said line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Apparatus for displaying a graphical space, comprising:
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a screen display for displaying said graphical space; and a programmable controller for positioning a cursor at a preselected position on said screen display such that a reference location is fixed at said preselected position, said programmable controller being operative to provide an object defining a predetermined area on said screen display, said reference location being substantially located on a border of said predetermined area, said programmable controller being operative to move said cursor from said reference location on said screen display in a direction in which said graphical space is to be selectively enlarged or reduced on said screen display such that a line between said cursor and said reference location is provided on said screen display to indicate said direction, said programmable controller being operative to selectively display the enlarged or reduced graphical space on said screen display on the basis of said line. - View Dependent Claims (16, 17, 18)
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Specification