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(Constrained) Delaunay Triangulation of Planar Straight Line Graphs (pure Python)

Project description

Tri - (Constrained) Delaunay Triangulation of Planar Straight Line Graphs


  • Download the source
  • Run python install (or python develop)


To triangulate a polygon with one outer and one inner shell:

from tri import ToPointsAndSegments, triangulate
from tri.delaunay import output_triangles, TriangleIterator

# create points and segments for triangulation
pts_segs = ToPointsAndSegments()
pts_segs.add_polygon([[(0,0), (10,0), (5,10), (0,0)],
                      [(0,0), (8,2), (6,4), (5,7), (0,0)]

# triangulate the points and segments
dt = triangulate(pts_segs.points, pts_segs.infos, pts_segs.segments)

# write the output
with open("tris.wkt", "w") as fh:
    output_triangles([t for t in TriangleIterator(dt)], fh)

The resulting file is readable with QGIS (Add Delimited Text Layer).


See CHANGES.txt.

Bug reports

If you discover any bugs, feel free to create an issue on Bitbucket.

Please add as much information as possible to help us fixing the possible bug. We also encourage you to help even more by forking and sending us a pull request.

The issue tracker lives here.




MIT License

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Files for tri, version 0.3
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