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https://issues.apache.org/jira/browse/BATIK-1014?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dian hina updated BATIK-1014:
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oke finish
> Valid input arcs produce non-rendered SVG arcs
> ----------------------------------------------
>
> Key: BATIK-1014
> URL: https://issues.apache.org/jira/browse/BATIK-1014
> Project: Batik
> Issue Type: Bug
> Components: SVGGraphics2D
> Affects Versions: 1.7
> Environment: Operating System: All
> Platform: PC
> Reporter: rolf.sigg
> Assignee: Batik Developer's Mailing list
> Attachments: AlmostCircleArc.java
>
>
> In some situations, pie charts produced using JFreeChart and SVGGraphics2D
> are rendered empty. Root cause is that the SVG spec states that elliptical
> arcs with identical start and end point are omitted
> (http://www.w3.org/TR/SVG11/implnote.html#ArcOutOfRangeParameters).
> However, the input Arc2D is ok, it is rendered perfectly e.g. to a bitmap
> image. The attached code sample produces both bitmap and SVG.
> Increasing the numeric precision may help, but does not solve the problem.
> There will be a case in which rounding effects will lead to identical start
> and end points.
> A possible approach could be to switch to circle based on the rounded points
> (SVGGraphics2D switches to circle if the Arc2D describes a perfect circle).
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