[vtkusers] vtkMeshQuality Check, only one quality criteria is displayed at a time.. WHY?

[David Doria]

On Sun, Feb 28, 2010 at 11:20 PM, Rakesh Patil <rakeshthp at in.com> wrote:

> Hello,
>
> I am implementing the functionality of checking the mesh quality. As
> suggested by few of the seniors here in the mailing list, this is what i
> did:
>
> I passed the mesh data in the form of vtkUnstructuredGrid to the
> vtkMeshQuality. Then using the quality data array which we obtain from
> vtkMeshQuality's output, I use vtkThreshold class to get the elements which
> do not satisfy the requirement to be a good cell.
>
> I am able to successfully represent the bad elements for a single quality
> parameter. But when i try to represent two quality parameters at the same
> time then, i can see only the one which is rendered at the end. for example,
> i have a GUI window where user can select what all quality parameter he
> wants to be displayed. Like, if user selects Minimum angle and maximum
> angle, both, then, all the elements that do not satisfy both criteria will
> be highlighted.
>
> In my case, I am selecting both min and max angle criteria and first I am
> highlightin g bad element as for min angle and next I am highlighting max
> angle criteria. Now suppose, for min angle criteria, there are 10 bad cells.
> and for max angle criteria, there are only 2 bad cells, and these 2 cells
> are common in both criteria. SO i should get total 10 bad cell.. But in my
> case it is displaying only 2 bad cell for max angle quality. If i change the
> order of rendering then i see only 10 bad cells for min angle.
>
> So what do i have to do to see both the quality criteria bad elements.??
>
> Thanks
>
> Regards
> Rakesh Patil
>
>
You'll have to show us exactly how you are trying to do this. Are you using
two separate vtkMeshQuality filters? Two separate actors for highlighting?
Maybe you can post the smallest compilable piece of code that demonstrates
your problem.

Thanks,

David
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