Controllers for modifying shapes based on a control line placed

Details Controllers for modifying shapes based on a control line placed Controllers for modifying shapes based on a control line placed

1998-04-28

2000-09-19

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06F 1500

Patent

active

061219797

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.

REFERENCES:
patent: 5861889 (1999-01-01), Wallace et al.
patent: 5982382 (1999-11-01), Benzel
Virtuoso.TM. Parameterized Cell Reference Manual, Version 4.2.1, Sep. 1992, Cadence, 555 River Oaks Parkway, San Jose, CA 95134-1917, i through x and 1-1 through 1-11.

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