[GRASS-user] <v.triangle> -- module to produce TIN with "breaklines" using <Triangle> utility

[Alexander Muriy]

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.

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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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