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Curve Node in the Hierarchy Tree (Curve_node)

Definition

An object cn of the class Curve_node is a node holding the curve in the hierarchy tree, corresponding to a root of a hierarchy. It holds the original curve inserted into the arrangement.

Inherits From

Subcurve_node

In addition to the operations of Subcurve_node the following operations are implemented.

Operations

bool cn.is_edge_node () returns false;

Subcurve_iterator cn.level_begin ( unsigned int i)
returns the begin iterator to the i'th level of subcurves (for the first subcurve level i=0).
Precondition: i < cn.number_of_sc_levels()

Subcurve_iterator cn.level_end ( unsigned int i)
returns the past-the-end iterator to the i'th level of subcurves (for the first subcurve level i=0).
Precondition: i < cn.number_of_sc_levels()

unsigned int cn.number_of_sc_levels ()
returns the number of subcurve levels (not including the edge level and the curve level).

Edge_iterator cn.edges_begin () overrides the same function in the Subcurve_node, to gain efficiency.

Edge_iterator cn.edges_end () overrides the same function in the Subcurve_node, to gain efficiency.

Next: Class declaration of Edge_node
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The GALIA project. Jan 18, 2000.