[vtkusers] Storing Metadata with VTK objects

Donny Zimmerman zmanvortex at gmail.com
Tue Jun 27 16:49:32 EDT 2017

Thanks David! That was exactly what I was looking for. Can I store a string
array into FieldData?

On Tue, Jun 27, 2017 at 3:17 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Donny,
> The usual way of doing this is by adding FieldData arrays to the VTK data
> objects:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/FieldData
> The field data can be retrieved from the data object during a pick.
>  - David
> On Tue, Jun 27, 2017 at 1:56 PM, Donny Zimmerman <zmanvortex at gmail.com>
> wrote:
>> I have tried asking this question before without response so i am going
>> to try to explain one of my use cases in hopes of clarifying the question.
>> I have vtkactors that are polyline and/or polygon objects that I am
>> rendering. These polyline/polygons represent National Weather Service watch
>> and warning areas. I would like to allow the user to pick a polygon and I
>> will pop up a window with the watch/warning information text. I need a way
>> to store some kind of ID with the actor so that when it is picked I am able
>> to look up the correct informative text from my database. I am struggling
>> with finding a way to store some kind of metadata with the vtkactor that
>> can be referenced when picked. Any help would be appreciated.
>> Thanks.
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