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. 2013 Jan 10;9(1):e1002849. doi: 10.1371/journal.pcbi.1002849

Figure 3. An example of three consecutive accretive growth steps.

Figure 3

(A–C) Accretive growth steps; vertex vi represents a simulated corallite. The new layer is constructed along the direction of normal vector ni of the vertex vi. A, B and C are three consecutive growth steps where triangles are inserted once the surface of the object increases.