[vtkusers] How to SHRINK a POLYDATA??!!!

[Bill Lorensen]

Compute the centroid of the polydata
Use TransformPolyDataFilter with a Transform that Translates to the
centroid, scales and translates back.

The vtkTransform would look something like:

vtkTransformPolyDataFilter *shrinkTransform = vtkTransformPolyDataFilter::New();
shrinkTransform->Translate(cx, cy, cz);
shrinkTransform->Scale(factor,factor,factor);
shrinkTransform->Translate(-cx, -cy, -cz);

On Mon, Nov 3, 2008 at 1:45 PM, Fabio Meneghini <fab.meneghini at gmail.com> wrote:
> well, actually vtkShrinkPolydata only shrinks cells, individually, respect
> to their own centroid. This results in a disconnection of each cells from
> each other.
> It's just a bit far from what I want...
>
>
> 2008/11/2 Bill Lorensen <bill.lorensen at gmail.com>
>>
>> Should be vtkShrinkPolyData
>>
>> On Sat, Nov 1, 2008 at 9:39 PM, Bill Lorensen <bill.lorensen at gmail.com>
>> wrote:
>> > vtkShrinkPolydata
>> >
>> > On Thu, Oct 30, 2008 at 6:09 PM, Fabio Meneghini
>> > <fab.meneghini at gmail.com> wrote:
>> >> Dear All,
>> >> Please don't tell me there's no way to shrink (or possibly enlarge) a
>> >> polydata, around his centroid!
>> >> Please help me!
>> >>
>> >> Fabio Meneghini
>> >>
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>
>