Polygon drawing method and polygon drawing apparatus
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United States of America Patent
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Jan 7, 2003
Grant Date -
N/A
app pub date -
Jan 5, 2000
filing date -
Jan 6, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A polygon drawing apparatus for drawing a polygon which is colored inside its outline by using outline data indicating the outline of the polygon, the apparatus comprising: an outline data generation unit for generating outline data indicating the outline of the polygon on the basis of coordinate data indicating the coordinates of points constituting the polygon; a mask data generation unit for performing, for a predetermined amount of the outline data, parallel exclusive-OR processes in units of amounts constituting the predetermined amount, thereby generating mask data which specifies 'coloring' for the inside of the outline; and a segment generation unit for drawing the polygon by using the mask data generated by the mask data generation means. Therefore, this polygon drawing apparatus can provide a satisfactory result of display without using a bulk memory, and without increasing the processing load.
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Cited Art Landscape
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