METHOD AND SYSTEM FOR FAST CLIPPING OF POLYGONS

摘要

A method for rendering static graphics m a mobile devicein applications such as map applications Panning increments are receivedfor panning a previously rendered frame to a panned frame A renderingregion is then determined based on the panning increment A candidatepolygon is then clipped to create clipped polygons contained within therendering region. The clipped polygons can then be rendered, and apor-tion of the previously rendered frame can be copied, to provide thepanned frame