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[Olivier Devillers <>]

Then what about

cells such as 2 5 7 1? What does 7 mean? Shouldn't the maximum index be 5 in
my case?

There are 5 vertices numbered from 1 to 5 (0 is the infinite vertex) and 8 cells numbered from 0 to 7.

Cell 3 has vertices 0, 3, 2, and 5, its neighbors are cells 2, 5, 7, and 1

Thank you:)

----------------------------------------------------------------------------------------------
3
5
-0.0637694 -0.166919 -0.980245
0.402024 0.37029 0.284583
0.789346 -0.448131 0.179006
0.6388 0.146318 -0.428829
0.710744 0.200153 -0.406391
8
1 2 3 4
3 2 1 0
4 2 3 5
0 3 2 5
4 1 2 5
0 2 1 5
3 1 4 5
1 3 0 5
2 6 4 1
5 7 3 0
3 6 4 0
2 5 7 1
5 2 6 0
4 7 3 1
4 2 7 0
3 5 6 1

--------------------------------------------

There is nothing special about the code.

       std::vector<K::Point_3> points;
CGAL::Random_points_in_sphere_3<K::Point_3, Creator> g(1.0);
std::copy_n(g, 5, std::back_inserter(points));

DT3 dt3(points.begin(), points.end());



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Olivier Devillers, 

chercheur à l’Inria, https://members.loria.fr/Olivier.Devillers/
◼︎ https://universiteouverte.org/