Hi all. I wrote a shell-script module <v.triangle> that is "front-end" for the famous <Triangle> utility (http://www.cs.cmu.edu/~quake/triangle.html) of J.R. Shewchuk. I'm planning to add it to GRASS-Addons wiki page :)
<Triangle> makes exact Delaunay triangulations, constrained Delaunay triangulations, conforming Delaunay triangulations and high-quality triangular meshes. On GIS terminology, it produces 2D TIN, optionally with "breaklines". Link: https://raw.github.com/amuriy/GRASS-scripts/master/v.triangle P.S. It generally works but centroids in final TIN have "0" heights. Now I think about some hack to make the right centroids in all areas of TIN. ----------------------------------------------------------------- Comparison of the one resulting TIN with the TIN produced in ArcView 3D Analyst see in linked PDF ( http://dl.dropbox.com/u/42016908/ArcView_GRASS_TIN_breaklines.pdf) -----------------------------------------------------------------
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