[vtkusers] can't label poly data

[payman labbaf]

Dear All,
 
I've been trying to label some points with irregular geometery and topology. 
I chose vtkPolyData as it says in the specification that is fine for 0 dimension data.
 
Now I have a problem with labeling the data. 
Could you please have a look at my simplified code and let me know what I'm doing wrong.
 

//Points

float pointsArray[12] = {1,1,0,1,2,0,2,1,0,2,2,0};

vtkFloatArray *pointFloatArray = vtkFloatArray::New();

pointFloatArray->SetNumberOfComponents(3);

pointFloatArray->SetNumberOfTuples(dims[0]*dims[1]*dims[2]); 

pointFloatArray->SetVoidArray(&pointsArray[0],12,1);

vtkPoints *points = vtkPoints::New();

points->SetData(pointFloatArray);

 

//Vectors

float array[12] = {10,5,0,11,6,0,12,7,0,13,8,0};

vtkFloatArray *vectors = vtkFloatArray::New();

vectors->SetNumberOfComponents(3);

vectors->SetNumberOfTuples(dims[0]*dims[1]*dims[2]);

vectors->SetArray(&array[0],12,1);

 

//Poly Data

vtkPolyData *polyData = vtkPolyData::New();

polyData->SetPoints(points);

polyData->GetPointData()->SetVectors(vectors);

 

//Label Mapper

vtkLabeledDataMapper *labelMapper = vtkLabeledDataMapper::New();

labelMapper->SetInput(polyData);

labelMapper->SetLabelModeToLabelVectors();

 

//Actor

vtkActor2D *actor = vtkActor2D::New();

actor->SetMapper(labelMapper);

 

The above code works when I'm using vtkStructuredGrid but not for polyData.

(I also tried InsertNextPoint() function for giving the points coordinates to vtkPolyData and that didn't work either)

Many thanks in advance


		
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