CGAL 4.12.1 - 3D Triangulation Data Structure
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#include <CGAL/Triangulation_utils_3.h>
Inherited by CGAL::Triangulation_3< Traits, TDS, SLDS >, CGAL::Triangulation_data_structure_3< TriangulationDSVertexBase_3, TriangulationDSCellBase_3, Concurrency_tag >, and Triangulation_3< Traits, Delaunay_triangulation_3< Traits, TDS, LP >::Triangulation_data_structure, SLDS >.
The class Triangulation_utils_3
defines operations on the indices of vertices and neighbors within a cell.
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Operations | |
static unsigned int | next_around_edge (unsigned int i, unsigned int j) |
In dimension 3, index of the neighbor n that is next to the current cell, when turning positively around an oriented edge whose endpoints are indexed i and j . More... | |
static int | vertex_triple_index (const int i, const int j) |
In dimension 3, index of the j 'th vertex in counterclockwise order on the face opposite to vertex with i of the cell. More... | |
static unsigned int | ccw (unsigned int i) |
Has a meaning only in dimension 2. More... | |
static unsigned int | cw (unsigned int i) |
Same for clockwise. | |
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static |
Has a meaning only in dimension 2.
Computes the index of the vertex that is next to the vertex numbered i
in counterclockwise direction. (see Figure 43.1).
i<3
.
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static |
In dimension 3, index of the neighbor n
that is next to the current cell, when turning positively around an oriented edge whose endpoints are indexed i
and j
.
According to the usual numbering of vertices and neighbors in a given cell, it is also the index of the vertex opposite to this neighbor n
. (see Figure 43.1).
( i < 4 ) && ( j < 4 ) && ( i != j )
.
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static |
In dimension 3, index of the j
'th vertex in counterclockwise order on the face opposite to vertex with i
of the cell.
( i < 4 ) && ( j < 3 )
.