[vtkusers] Question about visualization

[Dan Lipsa]

Rustem,
Indeed there is a superquadric source in VTK and ParaView. You can try this
source in paraview to see what paramters you need to specify to get the
glyph you want.

Dan


On Tue, Jul 11, 2017 at 7:41 AM, Rustem Khabetdinov <
rustem.khabetdinov at gmail.com> wrote:

> As far as I know there is tensorglyph in vtk that allows to visualize
> superquadrics. I've tried to use it but it gives me incorrect glyph. It
> always gives me sphere instead of ellipsoid.
>
> 2017-07-04 18:44 GMT+03:00 longbowzhang <longbowzhangchina at gmail.com>:
>
>> Basically you try to visualize a 3-by-3 symmetric matrix.
>> The natural choice is to use an ellipsoid.
>>
>> Unfortunately, you have *negative* eigenvalues.
>> Therefore, the most elegant visualization should be this
>> SuperquadricTensorGlyph
>> <http://people.cs.uchicago.edu/~glk/sqd/schultzTVCG10Superqu
>> adricTensorGlyphs.pdf>
>> .
>> The  code <http://web.ci.uchicago.edu/~schultz/sphinx/superquadrics.html>
>> is based on OpenGL, rather than VTK.
>>
>> Hope this could help or inspire you to some extent.
>>
>> Longbow
>>
>>
>>
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>
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