CGAL::Polyline_simplification_2::Scaled_squared_distance_cost Class Reference

#include <CGAL/Polyline_simplification_2/Scaled_squared_distance_cost.h>

Definition

This class is a cost function which calculates the cost as a scaled variant of the square of the distance between the original and simplified polylines.

Is model of

PolylineSimplificationCostFunction

Public Member Functions
	Scaled_squared_distance_cost ()
	Initializes the cost function.
template<class CDT >
std::optional< typename CDT::Geom_traits::FT >	operator() (const Constrained_triangulation_plus_2< CDT > &pct, typename Constrained_triangulation_plus_2< CDT >::Vertices_in_constraint_iterator vicq) const
	Given a vertex in constraint iterator vicq computes vicp=std::prev(vicq) and vicr=std::next(vicq), returns the maximum of the square distances between each point along the original subpolyline between vicp and vicr, and the straight line segment from *vicp->point() to *vicr->point() divided by the shortest squared distance between that segment and each of the vertices adjacent to vicq.

Member Function Documentation

operator()()

template<class CDT >

std::optional< typename CDT::Geom_traits::FT > CGAL::Polyline_simplification_2::Scaled_squared_distance_cost::operator()	(	const Constrained_triangulation_plus_2< CDT > &	pct,
		typename Constrained_triangulation_plus_2< CDT >::Vertices_in_constraint_iterator	vicq
	)		const

Given a vertex in constraint iterator vicq computes vicp=std::prev(vicq) and vicr=std::next(vicq), returns the maximum of the square distances between each point along the original subpolyline between vicp and vicr, and the straight line segment from *vicp->point() to *vicr->point() divided by the shortest squared distance between that segment and each of the vertices adjacent to vicq.

Template Parameters

CDT	must be CGAL::Constrained_Delaunay_triangulation_2 with a vertex type that is model of PolylineSimplificationVertexBase_2.