...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Calculates the perimeter of a geometry.
The function perimeter returns the perimeter of a geometry, using the default distance-calculation-strategy
template<typename Geometry> default_length_result<Geometry>::type perimeter(Geometry const & geometry)
Type |
Concept |
Name |
Description |
---|---|---|---|
Geometry const & |
Any type fulfilling a Geometry Concept |
geometry |
A model of the specified concept |
The calculated perimeter
Either
#include <boost/geometry.hpp>
Or
#include <boost/geometry/algorithms/perimeter.hpp>
The function perimeter is not defined by OGC.
Note | |
---|---|
PostGIS contains an algorithm with the same name and the same functionality. See the PostGIS documentation. |
Case |
Behavior |
---|---|
pointlike (e.g. point) |
Returns zero |
linear (e.g. linestring) |
Returns zero |
areal (e.g. polygon) |
Returns the perimeter |
Linear