[Geoserver-devel] Decorating animations

Andrea_Aime4 · October 24, 2011, 6:42pm

Hi,
we’d like to extend the animator to have the indication of the param values associated with that
frame as a label in a corner of the animation.

I was thinking about it and it seems to me the easiest, most natural way could be to leverage
map decorations, adding a new type of templatable decoration that uses the “env” filter
function as the source of values to be expanded.

This new “MessageDecoration” would be configurable using font family, size, bold/italic,
halo radius and halo color, and the message could be either fixed, or a CQL expression
just like in the “dynamic symbolizers”, that is something like:

This is year ${env(“time”)}

where whatever is in ${…} is interpreted as a CQL expression.

Another option could be that the message is interpreted as a Freemarker template that is
then fed the env variables as the evaluation context.

Hum… I guess I like the second better, what do you say?

The animator would then stick into the env function the current param value.
Text wise, nothing fancy, I don’t think I’m going to add wrapping and the like for example.

Opinions?

Cheers
Andrea

–

Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead

Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy

phone: +39 0584 962313
fax: +39 0584 962313

http://www.geo-solutions.it
http://geo-solutions.blogspot.com/
http://www.youtube.com/user/GeoSolutionsIT
http://www.linkedin.com/in/andreaaime
http://twitter.com/geowolf

Justin_Deoliveira · October 26, 2011, 5:50am

Not by domain but it sounds pretty reasonable to me. Not sure which option I like better… I think the first maybe… seems more direct. If the second is used how will the template lookup occur? Same directory that the current template file is located in? Regardless though +1 on the idea.

On Mon, Oct 24, 2011 at 7:42 PM, Andrea Aime <andrea.aime@anonymised.com> wrote:

Hi,
we’d like to extend the animator to have the indication of the param values associated with that
frame as a label in a corner of the animation.

I was thinking about it and it seems to me the easiest, most natural way could be to leverage
map decorations, adding a new type of templatable decoration that uses the “env” filter
function as the source of values to be expanded.

This new “MessageDecoration” would be configurable using font family, size, bold/italic,
halo radius and halo color, and the message could be either fixed, or a CQL expression
just like in the “dynamic symbolizers”, that is something like:

This is year ${env(“time”)}

where whatever is in ${…} is interpreted as a CQL expression.

Another option could be that the message is interpreted as a Freemarker template that is
then fed the env variables as the evaluation context.

Hum… I guess I like the second better, what do you say?

The animator would then stick into the env function the current param value.
Text wise, nothing fancy, I don’t think I’m going to add wrapping and the like for example.

Opinions?

Cheers
Andrea

–

Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead

Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy

phone: +39 0584 962313
fax: +39 0584 962313

http://www.geo-solutions.it
http://geo-solutions.blogspot.com/
http://www.youtube.com/user/GeoSolutionsIT
http://www.linkedin.com/in/andreaaime
http://twitter.com/geowolf

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–
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.

Andrea_Aime4 · October 26, 2011, 6:43am

On Wed, Oct 26, 2011 at 7:50 AM, Justin Deoliveira <jdeolive@anonymised.com.1501…> wrote: