...one of the most highly
regarded and expertly designed C++ library projects in the
world.

— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards

Create a squared form buffer around a point.

This strategy can be used as PointStrategy for the buffer algorithm. It creates a square from each point, where the point lies in the center. It can be applied for points and multi_points, but also for a linestring (if it is degenerate, so consisting of only one point) and for polygons (if it is degenerate). This strategy is only applicable for Cartesian coordinate systems.

class strategy::buffer::point_square { // ... };

`#include <boost/geometry/strategies/cartesian/buffer_point_square.hpp>`

Shows how the point_square strategy can be used as a PointStrategy to create square buffers where the original point lies in the center

#include <boost/geometry.hpp> #include <boost/geometry/geometries/point_xy.hpp> #include <boost/geometry/geometries/geometries.hpp> int main() { typedef boost::geometry::model::d2::point_xy<double> point; typedef boost::geometry::model::polygon<point> polygon; // Declare the point_square strategy boost::geometry::strategy::buffer::point_square point_strategy; // Declare other strategies boost::geometry::strategy::buffer::distance_symmetric<double> distance_strategy(0.5); boost::geometry::strategy::buffer::join_round join_strategy; boost::geometry::strategy::buffer::end_round end_strategy; boost::geometry::strategy::buffer::side_straight side_strategy; // Declare/fill of a multi point boost::geometry::model::multi_point<point> mp; boost::geometry::read_wkt("MULTIPOINT((3 3),(3 4),(4 4),(7 3))", mp); // Create the buffer of a multi point boost::geometry::model::multi_polygon<polygon> result; boost::geometry::buffer(mp, result, distance_strategy, side_strategy, join_strategy, end_strategy, point_strategy); return 0; }