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https://issues.apache.org/jira/browse/BATIK-1014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479205#comment-16479205
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Philipp Pfeiffer commented on BATIK-1014:
-----------------------------------------

I have the same problem. I am trying to use svg icons for my desktop 
application's toolbar, based on [Feathericons|https://feathericons.com/]. If I 
use an icon with circle or ellipse, e. g. "user.svg" from 
[Feathericons|https://feathericons.com/] I get a distorted display. The head 
looks like an "egg head" and not round. In other situations, e. g. 
"help-circle", the outer and inner element are not centered both. 

Even if I manipulate my svg graphic in different ways, I do not get any 
acceptable result.

Has anybody an idea to solve this issue? 

> 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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