Interpolating z-values from a Delaunay2D mesh

[Christos_Tsolakis (Christos Tsolakis (Kitware))]

Not sure if this will help but checkout VTK Classes used in the Examples and search for vtkDelaunay2D .

In particular, I would suggest looking into https://kitware.github.io/vtk-examples/site/Cxx/PolyData/InterpolateMeshOnGrid/