[vtkusers] special field-data annotation filter or similar functionality

[Dr. Roman Grothausmann]

Dear mailing list members,


Is there already a filter as described below that I've missed to find?
If not, any recommendation how to start implementing such filter?

Kind regards
Roman

On 17/07/14 12:36, Dr. Roman Grothausmann wrote:
> Dear mailing list members,
>
>
> Is there a filter in paraview that allows one to display specific field-data
> (e.g. of points or cells) at the 3D position of the corresponding point/cell in
> such a way that the annotation is hidden if some mesh or voxel object is in
> front? Or if the objects in front have some transparency the annotations are
> only visible as much as the transparency of the objects in front dictates?
> I know about the possibility of displaying selection labels via the Find-Dialog.
> However these annotations are
> - always in front,
> - cannot be made partially transparent (as I think was possible in older
> paraview versions than 4.1.0 when vtkVectorText was used) and
> - only the active selection can be annotated, ie not multiple datasets.
>
> I found this example in which the text is not always rendered in front of the axes:
> https://github.com/Kitware/VTK/blob/master/Examples/Annotation/Python/textOrigin.py
> However it uses vtkVectorText (which is not exportable as text into e.g. SVGs
> however vtkTextActor3D is).
> I now wonder if only vtkVectorText allows being hidden by other objects or if
> some settings of vtkTextActor3D are not offered for adjustment in the Find-Dialog?
> In any case a paraview filter that would offer all 3 features mentioned above
> would be really helpful. Are there any reasons that such a filter cannot be
> implemented in paraview at the present state?
> Can such functionality be implemented in general with the current state of VTK?
>
> Any help or hints are very much appreciated
> Roman
>

-- 
Dr. Roman Grothausmann

Tomographie und Digitale Bildverarbeitung
Tomography and Digital Image Analysis

Institut für Funktionelle und Angewandte Anatomie, OE 4120
Medizinische Hochschule Hannover
Carl-Neuberg-Str. 1
D-30625 Hannover

Tel. +49 511 532-9574