Re: [Geotools-devel] Add extra vendor option (displacementMode) in SLD to control finer control text displacement when rendering labels

[Andrea A. <and...@ge...>]

Hi Nikolaos,
the values seem a bit rigid to me... what about giving all the quadrant
positions
a name, and then allow the user to provide a comma separated list of
positions
that they want the engine to try instead?

Did you check what desktop applications like ArcGIS or QGIS do? Would be
interested not to steer too far away from that as both systems have
converters
from their styling language to GeoTools own SLD (without getting crazy with
extra work, of course!)

Cheers
Andrea


On Thu, Dec 7, 2017 at 8:36 AM, Nikolaos Pringouris <npr...@gm...>
wrote:

> Hi,
> Currently the label conflict resolution for a feature is affected mainly
> by the vendor option maxDisplacement which tries to compute a a suitable
> not overlapping position moving in a counterclockwise cycle with 45 degrees
> steps until success or the max displacement radius is reached. It would be
> good to have finer control over the way displacement takes place since many
> times we want labels to be i.e. vertical aligned compared to a feature
> position.
> Based on that I have created https://osgeo-org.atlassian.
> net/browse/GEOT-5882 which propose an extra vendor option
> (displacementMode) that can be used to enhance displacement capabilities
> (mainly for point and polygon features.
> Below a jpeg is given illustrating an example of the existing behavior and
> the new one proposed
>
> [image: Ενσωματωμένη εικόνα 3]
>
>
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-- 

Regards,

Andrea Aime

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