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This will create a TIN 'Delaunay' triangulation, connecting in Z projection the provided points (a collapse is needed, to avoid nodes overlappednote that GiD collapses automatically the nodes in the same position, so as there are no overlapping in the resulting mesh).
It is topologically a valid surfaces model, that interpolate all provided points, but it has a lot of triangles, some of them with small angles or short edges and this difficult other geometrical operations, and re-meshing.
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