[vtk-developers] howto report a bug?

[Sebastien Jourdain]

Oups, yes I didn't see the

sphere->SetRadius(dim);

But I don't think the issue come from the contour filter. Did you
tried to just render the SampleFunction ?

Seb


On Thu, Oct 4, 2012 at 5:23 PM, Henning Meyer <tutmann at gmail.com> wrote:
> Hi Sebastien,
>
> thank you for the quick answer. But I have to disagree.
> The cell size stays the same in relation to the radius of the sphere -
> in both cases the cell size is radius*2/20;
> You can also tell from the meshes, that the cell size is not changed.
> But the mesh quality is higher - which I suspect - maybe because of
> the values of the Implicit Function. In the first example the values
> are between -1 and 1, in the second example between -1000 and 1000.
>
> Henning
>
> 2012/10/4 Sebastien Jourdain <sebastien.jourdain at kitware.com>:
>> Hi Hennning,
>>
>> you properly reported a bug, but this is not a bug.
>>
>> In your example, you have an implicit function of a sphere that has a
>> radius 1 or .5.
>> And you sample that function across 20 cells in each dimension.
>> But in one case, you do it between -1 and 1 in each dimension and in
>> the second case you do it between -10000.0 and +10000.0.
>> Therefore the cell size that get created and clipped is not the same
>> which brings the artifact that you are seeing.
>> Which is totally expected...
>>
>> Seb
>>
>>
>>
>> On Thu, Oct 4, 2012 at 4:08 PM, Henning Meyer <tutmann at gmail.com> wrote:
>>> Hello All,
>>>
>>> I think I found a bug in VTK regarding the vtkContourFilter. After I
>>> got no helpful feedback @vtk-users I reported the bug
>>> (http://vtk.org/Bug/view.php?id=13472) about 10 days ago. But since
>>> nothing happend AND the bug ID is stroked in my view - I'm not really
>>> sure whether or not I did a good job reporting the bug.
>>> So I want to ask two things:
>>> 1) Is the bug http://vtk.org/Bug/view.php?id=13472 properly reported?
>>> 2) Could you please have a look at the actual issue of the bug?
>>>
>>> Thank you,
>>>
>>> Hennning
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