Page "Delaunay triangulation" Paragraph 34
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The most straightforward way of efficiently computing the Delaunay triangulation is to repeatedly add one vertex at a time, retriangulating the affected parts of the graph.
When a vertex v is added, we split in three the triangle that contains v, then we apply the flip algorithm.
Done naively, this will take O ( n ) time: we search through all the triangles to find the one that contains v, then we potentially flip away every triangle.
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