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[brYang <>]

Hi TableYoung,
I use fci->vertex(i)->point() ,where i = 0,1,2,3 to access the four vertices
of cells.
And for the cells incident to a vertex, I use : 

//suppose dt is the delaunay triangulation
std::list<Cell_handle> cell_vector; 
dt.incident_cells(vh, std::back_inserter(cell_vector));

to access all the incidental cells of vh

Then I draw all the line segments of each cell by connecting any two of the
four vertices of it.

But it still shows as the image above.

Is there any other possibility for causing this situation?

Baorong Yang



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