Patent ID: 6867767
Filing Date: 2005-03-15
Classification: G06T

Abstract:
1. Computer graphics apparatus comprising: a data store for storing data defining a computer model comprising a plurality of three-dimensional objects; a model modifier operable to modify the computer model when stored in the data store; and a dynamic display data generator operable to process the data defining the computer model to generate display data defining a sequence of two-dimensional display images for display to a user conveying the changing computer model, wherein the computer graphics apparatus further comprises: a receiver arranged to receive a signal to initiate generation of static image data corresponding to one of the sequence of display images; a detector operable to detect modification of the computer model subsequent to the reception of an initiation signal; a recovery data writer responsive to said detector and operable to write recovery data to a memory enabling the computer model corresponding to the display image on receipt of the initiation signal to be generated using the computer model as modified subsequent to the reception of the initiation signal; and a static image data generator operable to generate static image data corresponding to the display image on receipt of the initiation signal using the computer model as modified subsequent to the reception of the initiation signal and the recovery data written by the recovery data writer.