Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the develop branch, built from commit 42f6ea1194.

return_buffer

Calculates the buffer of a geometry.

Description

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..

Synopsis

template<typename Output, typename Input, typename Distance>
Output return_buffer(Input const & geometry, Distance const & distance, Distance const & chord_length = -1)

Parameters

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)

Returns

The calculated buffer

Header

Either

#include <boost/geometry.hpp>

Or

#include <boost/geometry/algorithms/buffer.hpp>