Invention Grant
- Patent Title: Method and system for fast clipping of polygons
- Patent Title (中): 用于快速剪切多边形的方法和系统
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Application No.: US12476778Application Date: 2009-06-02
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Publication No.: US08368719B2Publication Date: 2013-02-05
- Inventor: Ramgopal Rajagopalan
- Applicant: Ramgopal Rajagopalan
- Applicant Address: CA Waterloo, Ontario
- Assignee: Research in Motion Limited
- Current Assignee: Research in Motion Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Borden Ladner Gervais LLP
- Agent Alexander Anishchenko
- Main IPC: G09G5/02
- IPC: G09G5/02

Abstract:
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.
Public/Granted literature
- US20100002939A1 METHOD AND SYSTEM FOR FAST CLIPPING OF POLYGONS Public/Granted day:2010-01-07
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