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<div class="moz-cite-prefix">Hello Pawel, <br>
<br>
the shared data in Blender is located in the DNA. This DNA is
accessible to the widget (via RNA) and is used by the Compositor
(most of the time by copying the data to the Composite Operations.<br>
<br>
So when you want to access data of an Operation it must be made
accessible to other parts of blender via DNA and RNA. <br>
<br>
The DNA of the compositor can be found in the next file.
<a class="moz-txt-link-freetext" href="https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/makesdna/DNA_node_types.h">https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/makesdna/DNA_node_types.h</a><br>
The RNA of the compositor can be found in the next file
<a class="moz-txt-link-freetext" href="https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/makesrna/intern/rna_nodetree.c">https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/makesrna/intern/rna_nodetree.c</a><br>
<br>
The DNA describes how the data is structured, the RNA will tell
Blender how to evaluate the data when it changes. The
datastructure that is being used is
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NodeChroma.<br>
<br>
Now it should be accessible in the widget. But during compositing
it should be transferred to the specific operation (ColorMatte)<br>
<br>
In the file
<a class="moz-txt-link-freetext" href="https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/compositor/nodes/COM_ColorMatteNode.cpp">https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/source/blender/compositor/nodes/COM_ColorMatteNode.cpp</a>
this transfer takes place.<br>
<br>
Hope this will help you.<br>
<br>
Best regards, <br>
Jeroen<br>
<br>
<br>
On 12/14/2015 03:57 PM, Paweł Kozłowski wrote:<br>
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<blockquote
cite="mid:CAATbb7OJ+MCs0npfp3ZkK4n9AAk2aX=b0BKka9VD7BnRpc9zTg@mail.gmail.com"
type="cite">
<div dir="ltr">Hello,
<div><br>
</div>
<div>is it possible to get data from slider in Node to
interface_widget.c ? I mean, I have value of slider
in COM_ColorMatteOperation.cpp but I need it also this value
in interface_widget.c in drawing function, has it any acces
via pointers to gui values? Could you adwise me?</div>
<div><br>
</div>
<div>best regards</div>
<div>Pawel</div>
</div>
<br>
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