[vtkusers] How to extract points and lines?

[Andrej Gluhov]

In the application the user first selects a value for the filter
(m_iso.SetValue (0, (double) numcontourValue.Value)) Then the screen should
display a certain number of isolines on a certain criterion.
I seem to find the desired filter vtkPolyDataConnectivyFilter.


Jothybasu K Selvaraj wrote:
> 
> Why don't you independently set the values required like
> setValue(0,50),setValue(1,60).
> 
> Jothy
> 
> 2010/4/1 Andrej Gluhov <realandron at gmail.com>
> 
>> I use vtkContourFilter on DICOM-Image. The filter generates several
>> isolines. How to extract points and lines for each isolines or is it
>> impossible? I want to remove some isolines, but do not know how.
>>
>>            vtkDICOMImageReader DicomReader = new vtkDICOMImageReader();
>>             DicomReader.SetFileName(m_strFilePath);
>>             DicomReader.Update();
>>
>>             vtkContourFilter m_iso = new vtkContourFilter();
>>             m_iso.SetInputConnection(DicomReader.GetOutputPort());
>>             m_iso.SetValue(0, (double)numcontourValue.Value);
>>             m_iso.Update();//generate several isolines,but some need to
>> remove
>>
>>             vtkPolyData PD = m_iso.GetOutput();
>>             int NumberOfPoints = PD.GetNumberOfPoints();
>>
>>             using (FileStream fs = new FileStream("Points.txt",
>> FileMode.Create))
>>             {
>>                 using (StreamWriter sw = new StreamWriter(fs))
>>                 {
>>                     for (int i = 0; i < NumberOfPoints; i++)//points for
>> all isolines
>>                     {
>>                             double[] xyz = PD.GetPoint(i);
>>                             sw.Write(xyz[0].ToString() + " " +
>> xyz[1].ToString() + " " + xyz[2].ToString() + "\r\n");
>>                             sw.Flush();
>>                     }
>>                 }
>>             }
>> --
>> С Уважением,
>> Андрей.
>> Best regards, Andrew
>>
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> 
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