Brett L Carver

US Patent:

61280240, Oct 3, 2000

Filed:

Dec 18, 1997

Appl. No.:

8/993617

Inventors:

Brett K. Carver - Santa Rosa CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G06T 300
G06T 360
G06T 1120

US Classification:

345441

Abstract:

A polar controller takes user-input to specify the creation of graphic shapes. An interface of the polar controller receives from a user a start angle, a stop angle, a step angle and a radius length for the graphic shape. A polar execution engine of the polar controller generates the graphic shape based on the start angle, the stop angle, the step angle and the radius length. For example, when the radius length is expressed as a function of angle, the polar controller is able to draw spiral-like shapes.

US Patent:

61219797, Sep 19, 2000

Filed:

Apr 28, 1998

Appl. No.:

9/067709

Inventors:

Brett K. Carver - Santa Rosa CA

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

G06F 1500

US Classification:

345438

Abstract:

A stretch controller and a repeat controller allow for manipulation of graphical shapes in arbitrary angles. To stretch the graphic shape, a stretch distance and a stretch direction are received from a user. When the stretch direction is positive, then a determination is made as to vertices of the graphic shape are on a first side of a control line. The control line is at an arbitrary angle. This means that the control line does not have to be parallel to or orthogonal to an x-axis, but can be placed at a range of angles from 0 degrees to 180 degrees with respect to the x-axis. The vertices of the graphic shape, which are on the first side of the control line are moved the stretch distance in a direction orthogonal to the control line.