GetCost Concept Reference

Definition

The concept GetCost describes the requirements for the policy function object which gets the collapse cost of an edge.

The cost returned is a boost::optional value (i.e. it can be absent). An absent cost indicates that the edge should not be collapsed. This could be the result of a computational limitation (such as overflow), or can be intentionally returned to prevent the edge from being collapsed.

Refines:

DefaultConstructible

CopyConstructible

Has Models:

CGAL::Surface_mesh_simplification::Edge_length_cost<ECM>

CGAL::Surface_mesh_simplification::LindstromTurk_cost<ECM>

Types
typedef unspecified_type	Profile
	The type of the edge profile cache. More...
typedef unspecified_type	FT
	A field type representing the collapse cost. More...
CGAL::halfedge_graph_traits < ECM >::Point	Point
	The point type for the surface mesh vertex. More...
boost::optional< FT >	result_type
	The type of the result (an optional cost value). More...

Operations
result_type	operator() (Profile const &edge_profile, boost::optional< Point > const &placement) const
	Computes and returns the cost of collapsing the edge (represented by its profile), using the calculated placement. More...

Member Typedef Documentation

typedef unspecified_type GetCost::FT

A field type representing the collapse cost.

typedef unspecified_type GetCost::Profile

The type of the edge profile cache.

Must be a model of the EdgeProfile concept.

Member Function Documentation

result_type GetCost::operator()	(	Profile const &	edge_profile,
		boost::optional< Point > const &	placement
	)		const

Computes and returns the cost of collapsing the edge (represented by its profile), using the calculated placement.

Member Data Documentation

CGAL::halfedge_graph_traits<ECM>::Point GetCost::Point

The point type for the surface mesh vertex.

Must be a model of Point_3.

boost::optional<FT> GetCost::result_type

The type of the result (an optional cost value).