[vtkusers] I need to get the X, Y, Z coordinates of a point in a vtkPolyData

[Alessandro Artusi]

Thanks a lot Jerome,

I get an errore:

AttributeError GetPoints.

May be I am doing something wrong; what i  am doing is the following:

contour = vtk.vtkContourFilter()
contour.SetInput(grid) #grid is rectilineargrid()
contour.ComputeNormalOn()
contour.SetValue(0, 95) #my isovalue

in contour i should have my polyData right?

when i do what you suggested:

contour.GetPoints( ).GetPoint( pointId, coord )

I got the error.

Any suggestion?

Thanks again,
Alessandro.


On Mon, Oct 26, 2009 at 1:11 PM, Jérôme <jerome.velut at gmail.com> wrote:

> Hi,
> vtkPolyData is a vtkPointSet : you can access points coordinates through
>
> polydata->GetPoints( )->GetPoint( pointId, coord )
>
> where polydata is your... polydata, pointId is the point Id you want to get
> (from 0 to NumberOfPoints - 1) and coord is double coord[3] filled by the
> point coordinate.
>
> HTH
> Jerome
>
> 2009/10/26 Alessandro Artusi <artusialessandro4 at googlemail.com>
>
>>   Dear All,
>>
>> I have a vtkPolyData from the vtkContourFilter and I need to get the X,Y,Z
>> coordinates of each point in the PolyData. This because I need to convert
>> them.
>> How can i get this info?
>>
>> Thanks a lot for teh help,
>> Alessandro.
>>
>>
>>
>>
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