Method for Rendering Paths without Aliasing Artifacts
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
Jul 16, 2013
filing date -
Jul 16, 2013
priority date (Note) -
Abandoned
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Abstract
A method for rendering a two-dimensional input path defined according to a nonzero winding rule is described. Degenerate segments and degenerate contours of the input path are removed. intersections of the input path are determined. Contours of the input path that include intersections are marked. Unmarked interior contours are removed. Intersections are linked. The marked contours are walked to form new contours. Marked contours and degenerate contours are removed. The new contours and the unmarked contours are collected to form an equivalent output path. The contours of the equivalent output path are filled by either the nonzero winding rule or an even-odd parity rule. The segments of the equivalent output path are antialiased.
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