[vtkusers] vtkOBJReader

[Veerapuram Varadhan]

The following piece of sample can get you required tuple from the polydata.

vtkPolyData* input = NULL;
int nPoints = 0;
float intensity_value = 0.00;
float* coord = NULL;

input = vtkOBJReader->GetOutput();
nPoints = input->GetNumberOfPoints;

for (int i = 0; i < nPoints; i++)
{
    // to get the co-ordinate corresponding to a point in polydata
    coord = input->GetPoint(i);

    // to get the intensity value corresponding to a point in polydata
    intensity_value = input->GetPointData()->GetScalars()->GetTuple1(i);
}

Hope this helps,
V. Varadhan.


> On Mar 9, 2004, at 3:08 AM, Bernhard wrote:
>
>> I use the vtkOBJReader, i tried the example, but i don´t know, how i
>> can access the points, tuples and cells in this output. How can i do
>> this?
>
> vtkOBJReader's output is vtkPolyData. Once the file has been read into
> the pipeline, you can access the vtkPolyData returned from
> vtkOBJReader->GetOutput(). I usually run it through vtkPolyDataNormals
> and vtkStripper before accessing the data.
>
> Hope this helps,
> Chris
>
> --
> Chris Scharver
> Electronic Visualization Laboratory
> The University of Illinois at Chicago
> Ph: 312-996-3002   FAX: 312-413-7585
> <http://www.evl.uic.edu/scharver/>
>
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