[GRASS-user] DTM/DEM to TIN

[G. Allegri]

As far as I can see GRASS doesn't provide any ready-to-go tool to generate
TINs from grid digital elevation models. I know I can transform a grid to a
regular mesh somehow (probably using the Triangle lib for the last step)
but I can't find tools to generate TINs, given a certain amount of
tolerance, which preserve significative locations (like those obtained by
TPI for example) and shapes (in a morphonetric sense).

Does anybody has experience on this? The general aim is generating terrain
meshes (to be further decimated for LODs) to be employed in a 3D context.

Cheers,
giovanni
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