[vtkusers] vtkProbeFilter always returns the same

[Michael Knopke]

Hi community,

When using vtkProbeFilter with my dataSet (ImageData) and two different
Polygons the output dataset is exactly the same. Below is the simplified
code:

// get polydata representation of a closed spline
splineWidget->GetPolyData(splinePoly); //circle shape

// create a new polygon that fills the inside of the spline
vtkPolyData *tempPoly = ...New

tempPoly->SetPoints(splinePoly->GetPoints());
tempPoly->SetPolys(splinePoly->GetLines()); // disc shape

// now polydata consists of 1 Poly

//optional also no effect: 
delauny2D->SetInput(tempPoly);
delauny2D->Update();

// now polydata consists of more the 400Polys
// I also testet other triangulation filters with no effect

probe->SetInput(tempPoly);
probe->SetSource(myDataSet);

probe->GetOutput()->GetScalarRange(ScalarRange);

ScalarRange[1] always returns the highest value found ON the originial
spline (circle shape) but does not take into account the inside of the
circle. So changing:

probe->SetInput(tempPoly);

to:

probe->SetInput(splinePoly);

yields the exact same result. I really need to probe with the complete
shape not only with the boundary. What am I doing wrong? The strange thing
is, that when adding to a mapper->actor and rendering the two polydatas
clearly show the difference (circle and disc).

Thanks.

Michael

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