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Area calculation for cartesian points.
Calculates area using the Surveyor's formula, a well-known triangulation algorithm
template<typename PointOfSegment, typename CalculationType> class strategy::area::surveyor { // ... };
| 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 | Returns | 
|---|---|---|---|
| 
 void apply(PointOfSegment const & p1, PointOfSegment const & p2, summation & state) 
 | PointOfSegment const &: p1: PointOfSegment const &: p2: summation &: state: | ||
| 
 return_type result(summation const & state) 
 | summation const &: state: | 
          #include <boost/geometry/strategies/cartesian/area_surveyor.hpp>