[vtkusers] vtkContourFilter precision with vtkPlane

[Henning Meyer]

update: reported as http://vtk.org/Bug/view.php?id=13472
Please help!

2012/9/21 Henning Meyer <tutmann at gmail.com>:
> nope - it's a problem of vtkContourFilter not finding the correct boundaries.
> both examples use the same number of samples.
> for clarity I updated the example file - see attachement.
>
> 2012/9/21 Bill Lorensen <bill.lorensen at gmail.com>:
>> Looks like an aliasing problem. http://en.wikipedia.org/wiki/Aliasing
>>
>> You need to increase the samples.
>>
>>
>> On Fri, Sep 21, 2012 at 4:11 AM, Henning Meyer <tutmann at gmail.com> wrote:
>>>
>>> Hi All,
>>>
>>> encountered a strange behaviour of vtkContourFilter. Basically the
>>> quality of the generated mesh dramatically changes, when the scale of
>>> the model is changed (with adapted dims and bounds of the
>>> vtkSampleFunction).
>>> For me, this only happens in combinations of vtkPlane or vtkBox with
>>> vtkImplicitBoolean.
>>>
>>> I modified this example a bit:
>>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/ImplicitFunctions/ImplicitSphere
>>>
>>> Please have a look a the attached sources - I'm thankful for any hint.
>>>
>>> Henning
>>>
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>>
>>
>>
>> --
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>>