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[loc <>]

putting it this way, i hope the read will get what i intend to achieve.  if i
have a point cloud (from a scan of building) and triangulate a subset(could
be points from the same surface of the building or  points from 2 or even
more intersecting surfaces) of this cloud using DT. i want to be able to
retrieve among all the incident facets on a specified vertex, facets that
form a triangular fan around  this  vertex. i tried
convex_hull_3_to_polyhedron_3 function and through this i can get what i
want for at least about 25% of my points but the remaining percentages could
not be accessed using this approach.



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