[vtkusers] Hide non visible labels on a 3d model

[Fernando Nellmeldin]

Hello.
Does anyone has any tips?
Thank you.

2016-01-25 10:39 GMT+01:00 Fernando Nellmeldin <
f.nellmeldin at open-engineering.com>:

> Hello.
> I'm trying to show the values of a contour as labels. Each label is fixed
> to a point in the contour. I do not want to show the labels that are
> anchored to points that are not visible.
>
> To achieve this, I followed these two examples:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/LabelContours
>
> http://www.vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/Annotation/Python/labeledMesh.py
>
> Unfortunately, the removal of hidden points (and thus, of labels) is not
> working as expected. I attach three pictures of the behavior when I move
> the camera. Look at the values on the top (365 and 399).
>
> The Pipeline I am using is the following:
> vtkUnstructuredGrid -> vtkGeometryFilter -> vtkContourFilter ->
> vtkStripper -> (create a vtkPolyData with one point of each contour) ->
> vtkSelectVisiblePoints -> vtkLabeledDataMapper -> vtkActor2D.
>
> I am using VTK 5.10 but I tried with VTK 6.3 and the problem is worse
> (nothing is hidden). This is under Windows 8.1.
>
> Any ideas?
>
> Thank you.
>
>


-- 
*Fernando NELLMELDIN*
Software Engineer
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*Open Engineering s.a.*

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