Tilman Hausherr created PDFBOX-1924:
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Summary: Gouraud shading: detect empty triangles
Key: PDFBOX-1924
URL: https://issues.apache.org/jira/browse/PDFBOX-1924
Project: PDFBox
Issue Type: Bug
Affects Versions: 1.8.4, 2.0.0
Reporter: Tilman Hausherr
Assignee: Tilman Hausherr
Priority: Minor
1) The ch14.pdf file has some empty triangles on p. 20, because two points of
the triangle are identical. These empty triangles result in divide by zeroes,
which can result in black raster coloring of a whole page at resolutions that I
didn't use before.
Bugfix: detect and delete empty triangles, and added code to detect an empty
list and no background in GouraudShadingContext.getRaster().
2) One statement (raster.setPixels) in GouraudShadingContext was accidentally
moved one line up in the past which could result in lower performance.
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