boost::geometry::select_calculation_type< Geometry1, Geometry2, CalculationType > Struct Template Reference

Meta-function selecting the "calculation" type. More...

#include <select_calculation_type.hpp>

Inheritance diagram for boost::geometry::select_calculation_type< Geometry1, Geometry2, CalculationType >:

Public Types
typedef boost::mpl::if_ < boost::is_void < CalculationType >, typename select_coordinate_type < Geometry1, Geometry2 >::type, CalculationType >::type	type

Detailed Description

template<typename Geometry1, typename Geometry2, typename CalculationType>
struct boost::geometry::select_calculation_type< Geometry1, Geometry2, CalculationType >

Meta-function selecting the "calculation" type.

Based on two input geometry types, and an input calculation type, (which defaults to void in the calling function), this meta-function selects the most appropriate:

• if calculation type is specified, that one is used,
• if it is void, the most precise of the two points is used

Member Typedef Documentation

template<typename Geometry1, typename Geometry2, typename CalculationType>

typedef boost::mpl::if_< boost::is_void<CalculationType>, typename select_coordinate_type < Geometry1, Geometry2 >::type, CalculationType >::type boost::geometry::select_calculation_type< Geometry1, Geometry2, CalculationType >::type

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The documentation for this struct was generated from the following file:

• boost_1_57_0/boost/geometry/util/select_calculation_type.hpp