On Fri, Apr 11, 2014 at 10:40 AM, Nachtigall, Jens (init) <
[email protected]> wrote:
> Dear all,
>
>
>
> I think I've come across an SLD rendering bug in GeoServer 2.5.0.
>
>
>
> Rendering city names with this SLD (only relevant snippet here):
>
>
>
> <sld:TextSymbolizer>
> <sld:Label>
> <ogc:PropertyName>name</ogc:PropertyName>
> </sld:Label>
> <sld:Font>
> <sld:CssParameter name="font-family">Arial</sld:CssParameter
> >
> <sld:CssParameter name="font-size">10</sld:CssParameter>
> <sld:CssParameter name="font-style">normal</sld:CssParameter
> >
> <sld:CssParameter name="font-weight">normal</
> sld:CssParameter>
> </sld:Font>
> <sld:LabelPlacement>
> <sld:PointPlacement>
> <sld:AnchorPoint>
> <sld:AnchorPointX>0</sld:AnchorPointX>
> <sld:AnchorPointY>0.5</sld:AnchorPointY>
> </sld:AnchorPoint>
> <sld:Displacement>
> <sld:DisplacementX>3</sld:DisplacementX>
> <sld:DisplacementY>9</sld:DisplacementY>
> </sld:Displacement>
> <sld:Rotation>0</sld:Rotation>
> </sld:PointPlacement>
> </sld:LabelPlacement>
> <sld:Fill>
> <sld:CssParameter name="fill">#000000</sld:CssParameter>
> </sld:Fill>
> </sld:TextSymbolizer>
>
>
>
>
>
> This results in an image as given in the attachment
> CityName_NO_Rotation.png. You can clearly see that the text very hard to
> read. This does not happen if there is another layer (any color) below the
> text layer (e.g. as in a grouped layer).
>
>
>
> Just addin a Rotation to the above, i.e. changing Rotation to:
>
> <sld:Rotation>-1</sld:Rotation>
>
> fixes the issue. The resulting image looks as given in the attachment
> CityName_Rotation-1.png
> then. The text is now slidely rotated (hardly visible) but the text
> artefacts are now gone and the font is readable.
>
>
>
> Any ideas? Should I open a bug on Jira for this?
>
There is already one, it's the Java 7 text rendering unfortunately:
http://jira.codehaus.org/browse/GEOS-5486?jql=project%20%3D%20GEOS%20AND%20status%20%3D%20Open%20AND%20text%20~%20%22text%20java%207%22
This is a regression in Java itself, while there are small workarounds, we
still haven't found a good general solution
Cheers
Andrea
--
==
Meet us at GEO Business 2014! in London! Visit http://goo.gl/fES3aK
for more information.
==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
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