Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Reexamination Certificate
1998-04-09
2001-08-28
Luu, Matthew (Department: 2672)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
C345S215000
Reexamination Certificate
active
06281872
ABSTRACT:
BACKGROUND
The present invention concerns editing images and pertains specifically to a rotation interface in which rotation of an image is performed independently of a mirror attribute.
Image editing programs generally include some functionality which allows for an image to be rotated. Additionally, the same image editing programs often include the ability to “flip” the image around a horizontal axis and/or to “mirror” the image around a vertical axis.
SUMMARY OF THE INVENTION
In accordance with the preferred embodiment of the present invention, a rotation interface for an image is implemented. In response to a rotation control selecting a current angle of rotation, an image is rotated to the current angle of rotation. For example, the rotation control is a slider bar, a rotate left 90° button, or a rotate right 90° button. In response to a mirroring attribute control being selected, the image is mirrored by flipping the image around a first axis. The first axis is varied from vertical by the current angle of rotation.
In the preferred embodiment of the present invention, selecting a flip control results in flipping the image. The current angle of rotation for the rotation control is adjusted by 180°. Also, the current state of the mirroring attribute control is changed to reflect a current mirrored state of the image resulting from flipping the image.
The present invention provides for a rotation interface wherein the rotation operations are distinct from a separate image attribute-setting control for mirroring. Because mirroring is designated as an image attribute, users always will see either the normally rotated image, at any angle, or will see an image which has been first mirrored and then rotated to any angle.
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patent: 5533185 (1996-07-01), Lentz et al.
patent: 5671440 (1997-09-01), Curry
patent: 6054990 (2000-04-01), Tran
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Soap Explorer Guide, Version 1.0 , available from MetaTools Visual Computing Software Co., 6603 Carpinteria Ave. Carpentinteria, CA 93013, pp. 20,21.
Harrison Chante
Hewlett--Packard Company
Luu Matthew
LandOfFree
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