Danilo,

to edit GeoTools source files, you must download and build GeoTools from source. Source jar attachments are read-only. You will also need to run "mvn clean install" for GeoTools and refresh Eclipse before changes will be seen by GeoServer projects.

Kind regards,
Ben.

On 24/08/17 06:05, Danilo da Silveira Figueira wrote:
Ok, i will create the prototype :).

But where i can get information how to get the entire source code? Because
for example the org.geotools.styling.ChannelSelection is part of a jar
(gt-api-11), and even with the -DdownloadSources i cant edit the source
code.
What i am doing wrong to not get all the source code dependencies?

2017-08-23 10:59 GMT-03:00 Andrea Aime <[email protected]>:

Hi Danilo,
that sounds great!

Just a word of warning, normally you should do the proposal first (maybe
do a tiny prototype
to figure out where you want to make the changes, it's up to you), and
then the coding.
If you do the opposite, it's fine too, but don't complain if/when you get
change request on your
proposal that will force you to rewrite part of the code ;-)

Cheers
Andrea


On Wed, Aug 23, 2017 at 3:51 PM, Danilo da Silveira Figueira <
[email protected]> wrote:

Andrea,

Thanks for your reply, so i will propose this API change and code this by
myself. After it i do the proposal for the developer team.



2017-08-23 5:16 GMT-03:00 Andrea Aime <[email protected]>:

Hi Danilo,
as far as I know there is no support for alpha channel in there.

You'll have to make a code extension in GeoTools, which might not be
simple since the current API,
derived from the SLD spec, goes like this:

     /**
      * Set the RGB channels to be used
      *
      * @param red the red channel
      * @param green the green channel
      * @param blue the blue channel
      */
     void setRGBChannels(SelectedChannelType red, SelectedChannelType
green, SelectedChannelType blue);

     /**
      * Set the RGB channels to be used
      *
      * @param channels array of channels in RGB order
      */
     void setRGBChannels(SelectedChannelType[] channels);

and all the code dealing with style parsing, encoding and rendering has
enumerations or explicit mentions
of "red", "green" and "blue".
So public API breaking seems to be necessary, which implies that you'll
have to make a proposal and restrict
the code changes to the developer series:
http://docs.geotools.org/latest/developer/procedures/proposal.html

Hope this helps (even if it's probably not what you wanted to hear :-p )

Cheers
Andrea


On Tue, Aug 22, 2017 at 8:41 PM, Danilo da Silveira Figueira <
[email protected]> wrote:

Hi all,

I see that the property ChannelSelection has only RGB channels, i need
to use all the RGBA channels.

In fact in my image the AlphaChannel is an important information too.
And each cell has one different value, so because this i cant use things
like RAMP/VALUE colormap.

It is possible to use something like <AlphaCHannel> in sld? If don't,
can i do this by implementing a geoserver extension?

i will have to
How can i do this?

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Regards,

Andrea Aime

==
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http://goo.gl/it488V for more information.
==

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@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>
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http://twitter.com/geosolutions_it

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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
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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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