[vtkusers] How can I get parametric coordinates for 3D polydata points?

[Philip Fackler]

I have several distinct surfaces defined by triangular facets (wound
consistently) and the bounding segmented curves for each surface (the
surfaces are generally not closed). One way I can imagine to triangulate a
set of points on a surface is to use vtkDelaunay2D with each point's
corresponding (u, v) coordinates on a parametric surface, followed by a
transformation of the points back to 3D. So, is there a tool in vtk to
generate such a parametric surface based on a polydata with the information
indicated above?
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