[vtk-developers] vtkPoints as input to a filter?

[David Gobbi]

But David D. brings up a good point.  A lot of the VTK filters should
be much more generic than they are.  Any vtkPolyData filter that only
operates on the points should be changed to take vtkPointSet instead.
Likewise, any filter that only operates on scalars should take
vtkDataSet.

For example, the classes vtkImageMapToColors and vtkImageShiftScale
have a whole bunch of unnecessary image-specific code in them.  These
operations should be simplified, genericised, and made to work the
scalars of any vtkDataSet.  Or, in fact, on any array stored in the
data.

   David


On Fri, Feb 5, 2010 at 10:06 AM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> There is an AppendData.
>
> On Fri, Feb 5, 2010 at 11:55 AM, David Doria <daviddoria+vtk at gmail.com> wrote:
>> On Fri, Feb 5, 2010 at 11:48 AM, Moreland, Kenneth <kmorel at sandia.gov>
>> wrote:
>>>
>>> Then use a vtkPolyData or vktUnstructuredGrid with no cells.
>>>
>>> -Ken
>>
>> The reason I ask is that it seems like there is no vtkAppendUnstructuredGrid
>> or vtkAppendPointSet, only vtkAppendPolyData. Is there a reason for this?
>> The output should be the same type as the inputs if the input types are all
>> the same. If the inputs are different types, the output should be the "most
>> general" type of vtkPointSet.
>> Does something like this already exist? Or should we add it?
>> Thanks,
>>
>> David
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