...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Calculates area on the surface of a sphere using the trapezoidal rule
template<typename PointOfSegment, typename CalculationType> class strategy::area::spherical { // ... };
Parameter 
Default 
Description 

typename PointOfSegment 
segment point type 

typename CalculationType 
void 
numeric type for calculation (e.g. high precision); if void then it is extracted automatically from the coordinate type and (if necessary) promoted to floating point 
Function 
Description 
Parameters 

spherical()


template<typename T> spherical(geometry::srs::sphere< T > const & sphere)

geometry::srs::sphere< T > const &: sphere: 

spherical(CT const & radius)

CT const &: radius: 
Function 
Description 
Parameters 
Returns 

void apply(PointOfSegment const & p1, PointOfSegment const & p2, excess_sum & state)

PointOfSegment const &: p1: PointOfSegment const &: p2: excess_sum &: state: 

return_type result(excess_sum const & state)

excess_sum const &: state: 
#include <boost/geometry/strategies/spherical/area.hpp>