Requirements for a Polyhedron_traits

Definition

A model for the Polyhedron_traits concept must provide the following types, operations and restrictions with respect to the halfedge data structure HDS used in the polyhedral surface.

Types

Polyhedron_traits::Point
	point type equal to HDS::Point, if points are supported.
Polyhedron_traits::Normal
	normal vector equal to HDS::Facet::Normal, if normals are supported.
Polyhedron_traits::Plane
	plane equation equal to HDS::Facet::Plane, if plane equations are supported.

Operations

void	traits.reverse_normal ( Normal& n) const
		reverses the orientation of the normal vector n. Only needed if normal vectors are supported.
void	traits.reverse_plane ( Plane& p) const
		reverses the orientation of the plane equation p. Only needed if plane equations are supported.

See Also

Polyhedron_3 and Polyhedron_default_traits_3.