Periodic_2TriangulationFaceBase_2 Concept Reference

Definition

At the base level (see Section Software Design), a face stores handles to its four vertices and to its four neighbor faces. The vertices and neighbors are indexed 0, 1 and 2. Neighbor \( i\) lies opposite to vertex \( i\).

Refines

TriangulationFaceBase_2

Has Models:

CGAL::Periodic_2_triangulation_face_base_2

See also

TriangulationDataStructure_2

TriangulationFaceBase_2

Periodic_2TriangulationVertexBase_2

Access Functions
int	offset (int i) const
	Returns the offset of vertex i.
bool	has_zero_offsets () const
	Returns true if the offset of vertex i is zero for \( i \in\{0, 1, 2\}\).

Setting
void	set_offsets (int off0, int off1, int off2)
	Sets the vertex offsets according to off0 to off2.

Member Function Documentation

offset()

int Periodic_2TriangulationFaceBase_2::offset

(

int

i

)

const

Returns the offset of vertex i.

Precondition

\( i \in\{0, 1, 2\}\).