Discussion:
[Geotools-devel] Undefined behavior for polygon labels with line placement, filling that hole
Andrea Aime
2017-07-05 17:34:30 UTC
Permalink
Hi,
currently the rendering code does not notice "line placement" at all when
the
geometry is a polygon.
The specification does not seem to say anything either.

I've noticed this while working on TextSymbolizer export from QGIS, and
over there
they allow to label the perimeter of a polygon instead of its centroid.

So... given that we have no current useful behavior for that, how about we
extract
the polygon outline and label that as a line, when a line placement is
specified?

Anyone sees problems with filling the current behavior hole this way?

Regards,

Andrea Aime

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Ian Turton
2017-07-06 07:34:33 UTC
Permalink
That seems like a reasonable idea. Plus anything that increases GeoServer
QGIS interoperability is a good thing.

Ian
Post by Andrea Aime
Hi,
currently the rendering code does not notice "line placement" at all when
the
geometry is a polygon.
The specification does not seem to say anything either.
I've noticed this while working on TextSymbolizer export from QGIS, and
over there
they allow to label the perimeter of a polygon instead of its centroid.
So... given that we have no current useful behavior for that, how about we
extract
the polygon outline and label that as a line, when a line placement is
specified?
Anyone sees problems with filling the current behavior hole this way?
Regards,
Andrea Aime
==
GeoServer Professional Services from the experts! Visit
http://goo.gl/it488V for more information.
==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via di Montramito 3/A
55054 Massarosa (LU)
phone: +39 0584 962313 <+39%200584%20962313>
fax: +39 0584 1660272 <+39%200584%20166%200272>
mob: +39 339 8844549 <+39%20339%20884%204549>
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
AVVERTENZE AI SENSI DEL D.Lgs. 196/2003
Le informazioni contenute in questo messaggio di posta elettronica e/o
nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
loro utilizzo Ú consentito esclusivamente al destinatario del messaggio,
per le finalità indicate nel messaggio stesso. Qualora riceviate questo
messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia via e-mail e di procedere alla distruzione del messaggio
stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
utilizzarlo per finalità diverse, costituisce comportamento contrario ai
principi dettati dal D.Lgs. 196/2003.
The information in this message and/or attachments, is intended solely for
the attention and use of the named addressee(s) and may be confidential or
proprietary in nature or covered by the provisions of privacy act
(Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
Code).Any use not in accord with its purpose, any disclosure, reproduction,
copying, distribution, or either dissemination, either whole or partial, is
strictly forbidden except previous formal approval of the named
addressee(s). If you are not the intended recipient, please contact
immediately the sender by telephone, fax or e-mail and delete the
information in this message that has been received in error. The sender
does not give any warranty or accept liability as the content, accuracy or
completeness of sent messages and accepts no responsibility for changes
made after they were sent or for other risks which arise as a result of
e-mail transmission, viruses, etc.
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