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Vertex_handle
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v.up ()
|
returns the corresponding vertex
(if any) of the next level triangulation;
|
|
Vertex_handle
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v.down ()
|
returns the corresponding vertex
of the previous level triangulation;
|
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void
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v.set_up ( Vertex_handle u)
|
sets the handle pointing to to the corresponding vertex
of the next level triangulation;
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void
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v.set_down ( Vertex_handle d)
|
sets the handle pointing to the corresponding vertex
of the previous level triangulation;
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