[Paraview] Overriding the maximal cylinder source resolution

[Mathieu Westphal]

Hello

One way to go would be to copy (or subclass) vtkCylinderSource and built it
as a Plugin for paraview.
Easy if you are building ParaView yourself, more complex otherwise.

Another way would be to write your own cylinder source in a Python
Programmable Source,
not easy but you will be able to use your new source with the binary
release of ParaView

Regards,

Mathieu Westphal

On Tue, May 30, 2017 at 5:27 AM, kenichiro yoshimi <rccm.kyoshimi at gmail.com>
wrote:

> Hi Tomislav,
>
> I find restriction on the resolution number of a cyliner source in
> vtkCylinderSource.h, that is:
>   vtkSetClampMacro(Resolution,int,2,VTK_CELL_SIZE).
> This macro amounts to saying that the resolution is restricted to a
> range between 2 and VTK_CELL_SIZE(=512). Hence, I think it difficult
> to override.
>
> In order to increase the resolution of the cylinder, one thing you can
> try is to apply the loop subdivision filter after triangulating it.
>
> Thanks,
> yoshimi
>
> 2017-05-30 0:06 GMT+09:00 Tomislav Maric <tomislav.maric at gmx.com>:
> > Hello everyone,
> >
> > I have exported the paraview trace into the attached script that
> > generates a cylinder source without caps, triangulates and saves an STL
> > file.
> >
> > I have noticed that the cylinder resolution can be prescribed to any
> > number in the python script:
> >
> > ~~~
> >     # create a new 'Cylinder'
> >     cylinder1 = Cylinder()
> >
> >     # Properties modified on cylinder1
> >     cylinder1.Resolution = 100000
> > ~~~
> >
> > And this number is reported by the print command as well
> >
> > ~~~
> >     print(cylinder1.Resolution)
> > ~~~
> >
> > However, the actual resolution of the cylinder source never exceeds the
> > number 512. This I have figured out after manually inspecting the number
> > of triangles in the 'cylinder.stl' file generated by the attached script.
> >
> > I have browsed the VTK code as well, but I could not find the point
> > where the maximal cylinder source resolution is restricted to 512.
> >
> > My question is: can I somehow (in python, or in VTK) override the
> > resolution that is actually then applied to the cylinder? I am using
> > paraview version 4.4.0. Does it work in a newer paraview version?
> >
> > Kind Regards,
> >
> > Tomislav
> >
> >
> >
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