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Calculates the buffer of a geometry.
The free function return_buffer calculates the buffer (a polygon being the spatial point set collection within a specified maximum distance from a geometry) of a geometry. This version with the return_ prefix returns the buffer, and a template parameter must therefore be specified in the call..
template<typename Output, typename Input, typename Distance> Output return_buffer(Input const & geometry, Distance const & distance, Distance const & chord_length = -1)
| Type | Concept | Name | Description | 
|---|---|---|---|
| Output | Any type fulfilling a Geometry Concept | - | Must be specified | 
| Input const & | Any type fulfilling a Geometry Concept | geometry | A model of the specified concept | 
| Distance const & | numerical type (int, double, ttmath, ...) | distance | The distance to be used for the buffer | 
| Distance const & | numerical type (int, double, ttmath, ...) | chord_length | (optional) The length of the chord's in the generated arcs around points or bends (RESERVED, NOT YET USED) | 
The calculated buffer
Either
            #include <boost/geometry.hpp>
          
Or
            #include <boost/geometry/algorithms/buffer.hpp>