[vtk-developers] Exporting to vector format problem.

[David Lonie]

On the OpenGL backend, the scalar bar is handled specially by the
GL2PS export code. See
https://gitlab.kitware.com/vtk/vtk/blob/master/IO/ExportOpenGL/vtkOpenGLGL2PSExporter.cxx#L798

Exporting vector graphics through GL2PS is a rather tedious process
that requires some manual setup for certain actors. In this case, we
need to specially handle the scalar bar in order to get the textured
color bar to appear correctly. I don't see a way to work around this
without modifying the exporter itself.

On the OpenGL2 backend, the whole thing will be exported as a raster
image, aside from the text labels which will be scalable. So you
should at least see something in the output from the new backend.

HTH,
Dave

On Tue, Jun 27, 2017 at 3:27 AM, rakesh patil <prakeshofficial at gmail.com> wrote:
> Hi,
>
> I have derived my own class from vtkScalarBarActor. I have redefined
> ConfigureScalarBar() function. I am getting the desired output on the render
> window. When I export the renderwindow contents to vector format using
> vtkGL2PSExporter, the output PS file misses drawing the colour bar. If I
> replace my derived class with vtkScalarBarActor, the PS file shows proper
> output. Really wondering what might have gone wrong.
>
> Attached the code of my derived class. Experienced users/VTK developers,
> help me out to fix this problem.
>
> Thanks & Regards
> Rakesh Patil
>
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