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https://issues.apache.org/jira/browse/BATIK-1109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr updated BATIK-1109:
-----------------------------------
Affects Version/s: 1.7
> svggen.font.SVGFont doesn't always calculate the correct path
> -------------------------------------------------------------
>
> Key: BATIK-1109
> URL: https://issues.apache.org/jira/browse/BATIK-1109
> Project: Batik
> Issue Type: Bug
> Components: SVGGraphics2D
> Affects Versions: 1.7
> Reporter: Tilman Hausherr
>
> We at PDFBox have used the code at
> https://svn.apache.org/viewvc/xmlgraphics/batik/trunk/sources/org/apache/batik/svggen/font/SVGFont.java?view=markup
> for TT font rendering. There've been some problems (see PDFBOX-1435, scroll
> to second half), and after bugfixes didn't work (see PDFBOX-1206), I had the
> idea to create a SVG file by hand with the calculations mentioned in the file.
> I calculated the SVG values for the outer circle of that "o" of PDFBOX-1435
> with the Batik source and added 100 to each y value (before I found out that
> svg allows translating). Here's the svg file I get:
> {code}
> <?xml version="1.0" standalone="no"?>
> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
> "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd";>
> <svg width="12cm" height="12cm" viewBox="0 0 1200 1200"
> xmlns="http://www.w3.org/2000/svg"; version="1.1">
> <rect x="1" y="1" width="1000" height="1000"
> fill="none" stroke="blue" stroke-width="1" />
> <g transform="scale(7)">
> <path d="M85,53 T74,49 T54,48.5 T39.5,59.5 T35.5,76.5 T44,94 T62,102
> T79.5,97 T89.5,82.5 T88.5,63 Z"
> fill="none" stroke="red" stroke-width="5" />
> </g>
> </svg>
> {code}
> This can be displayed with firefox, and this "o" has an angle :-( The reason
> is that the Batik algorithm doesn't work for contours made entirely with
> off-curve points.
> I didn't actually run the Batik code, the calculations were done on paper.
> Further thoughts on the TT path drawing algorithm can be found at
> PDFBOX-1206. We ended up using the code from PDF.js, and maybe you should too
> :-)
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