Research in Motion Corporation

Blackberry Corporation

Blackberry Limitied

Ramgopal Rajagopalan

Sean Patrick McIntyre

A method for rendering static graphics in a mobile device in applications such as map applications. Panning increments are received for panning a previously rendered frame to a panned frame. A rendering region is then determined based on the panning increment. A candidate polygon is then clipped to create clipped polygons contained within the rendering region. The clipped polygons can then be rendered, and a portion of the previously rendered frame can be copied, to provide the panned frame.

Method and system for fast clipping of polygons

A method of static graphics rendering in a mobile device. Panning increments are received for panning a previously rendered frame to a panned frame. A rendering region is then determined based on the panning increments. A candidate line segment or polyline is then clipped to create clipped line segments contained within the rendering region. The clipped line segments can then be rendered, and a portion of the previously rendered frame can be copied, to provide the panned frame.

Method and system for fast clipping of line segments

A method for rendering static labels in a mobile device in applications such as map applications. Panning increments are received for panning a previously rendered frame to a panned frame and a rendering region is defined based on the panning increments. Ones of the labels that overlap the region and that overlap with the panned frame by a threshold amount are determined. Geometry that overlaps the rendering region is rendered and a portion of the previously rendered frame is copied. The ones of the labels are rendered to provide the panned frame.

Method and system for rendering of labels

A method for rendering static graphics in a mobile device in applications such as map applications. Panning increments are received for panning a previously rendered frame to a panned frame. A rendering region is defined based on the panning increments and the rendering region is expanded to provide an expanded region. At least one of a candidate polygon, candidate line segment, and polyline is clipped to the expanded region to obtain one or more clipped portions of the at least one of the candidate polygon, candidate line segment and candidate polyline contained within the expanded region. The one or more clipped portions of the candidate polygon, candidate line segment and candidate polyline, are rendered and portion of the previously rendered frame is copied to provide the panned frame.

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Waterloo, Canada

Ramgopal Rajagopalan