PolyhedronTraits

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PolyhedronTraits_3

Required types and member functions for the PolyhedronTraits_3 concept. This geometric traits concept is used in the polyhedral surface data structure CGAL::Polyhedron_3<Traits>. This concept is a subset of the 3d kernel traits and any Cgal kernel model can be used directly as template argument.

Refines

CopyConstructable, Assignable.

Types

PolyhedronTraits_3::Point_3
	point type.

PolyhedronTraits_3::Plane_3
	plane equation. Even if plane equations are not supported with a particular polyhedral surface this type has to be defined (some dummy type).

PolyhedronTraits_3::Construct_opposite_plane_3
	is an unary function object that reverses the plane orientation. Must provide Plane_3 operator()(Plane_3 plane) that returns the reversed plane. Required only if plane equations are supported and the inside_out() method is used to reverse the polyhedral surface orientation.

Creation

PolyhedronTraits_3 traits ( traits2);
	copy constructor.

PolyhedronTraits_3&

traits = traits2

assignment.

Operations

Construct_opposite_plane_3	traits.construct_opposite_plane_3_object ()
		returns an instance of this function object.

Has Models