New feature: vtkDataSet::GetPointsDataArray ?

[lassoan (Andras Lasso)]

@Yohann_Bearzi

This can currently be done by calling void vtkDataSet::GetPoint(vtkIdType, double[3]), which copies into the passed buffer the point coordinates.

This is the legacy way of accessing data. You should now use vtkSMPTools::For and other modern constructs. See for example how @ken-martin has revamped vtkWindowedSincPolyDataFilter and achieved 20-25x speedup.

My understanding is that vtkm is intended for massively parallel systems, such as GPUs, supercomputers - not for the 4-8 cores that you have in an average CPU.