Importance

Loading Importance Indicators...

Abstract

An electronic graphic system includes an image store for storing in a multiplicity of storage locations data representing a multiplicity of image pixels which when displayed together form an image. A user operable input device generates control data in response to user operation thereof. An implement data store stores data defining a patch of implement pixels which together represent a profile of a drawing implement. A processor is connected to receive the control data from the user operable input device and responsive to the control data to identify a patch of storage locations in the image store, to read image data from the patch of storage locations, to modify the thus read image data using the patch of implement pixels in the implement data store and to write the thus modified image data back to the patch of storage locations in the image store, whereby in response to continuous operation of the input device a series of overlapping patches of image data are modified to create data representing a line in the image. A monitor displays an image represented by data input thereto. The system is operable in a preview mode in which display data is derived from the data in the implement data store, which display data defines an image comprising a graphical representation of the profile of the drawing implement, and in response to operation of the user operable input device to effect modifications to the graphical representation of the profile and corresponding to the data in the implement data store, the image defined by the display data further comprising an image defined by the data in the image store in response to control data corresponding to the single position being generated by the user operable input device, the system in the preview mode thereby enabling a user specified implement profile to be defined.

Loading the Abstract Image...

First Claim