int main()
{
typedef boost::geometry::model::d2::point_xy<double> point;
typedef boost::geometry::model::linestring<point> linestring;
typedef boost::geometry::model::polygon<point> polygon;
// Declare the round-end strategy with 36 points for a full circle
boost::geometry::strategy::buffer::end_round end_strategy(36);
// Declare other strategies
boost::geometry::strategy::buffer::distance_symmetric<double> distance_strategy(1.0);
boost::geometry::strategy::buffer::side_straight side_strategy;
boost::geometry::strategy::buffer::join_round join_strategy;
boost::geometry::strategy::buffer::point_circle point_strategy;
// Declare/fill a multi linestring
boost::geometry::model::multi_linestring<linestring> ml;
boost::geometry::read_wkt("MULTILINESTRING((3 5,5 10,7 5),(7 7,11 10,15 7,19 10))", ml);
// Create the buffered geometry with rounded ends
boost::geometry::model::multi_polygon<polygon> result;
boost::geometry::buffer(ml, result,
distance_strategy, side_strategy,
join_strategy, end_strategy, point_strategy);
/*<-*/ create_svg_buffer("buffer_end_round.svg", ml, result); /*->*/
return 0;
}
int main()
{
typedef double coordinate_type;
typedef boost::geometry::model::d2::point_xy<coordinate_type> point;
typedef boost::geometry::model::polygon<point> polygon;
// Declare strategies
const double buffer_distance = 1.0;
const int points_per_circle = 36;
boost::geometry::strategy::buffer::distance_symmetric<coordinate_type> distance_strategy(buffer_distance);
boost::geometry::strategy::buffer::join_round join_strategy(points_per_circle);
boost::geometry::strategy::buffer::end_round end_strategy(points_per_circle);
boost::geometry::strategy::buffer::point_circle circle_strategy(points_per_circle);
boost::geometry::strategy::buffer::side_straight side_strategy;
// Declare output
boost::geometry::model::multi_polygon<polygon> result;
// Declare/fill a linestring
boost::geometry::model::linestring<point> ls;
boost::geometry::read_wkt("LINESTRING(0 0,4 5,7 4,10 6)", ls);
// Create the buffer of a linestring
boost::geometry::buffer(ls, result,
distance_strategy, side_strategy,
join_strategy, end_strategy, circle_strategy);
/*<-*/ create_svg_buffer("buffer_linestring.svg", ls, result); /*->*/
// Declare/fill a multi point
boost::geometry::model::multi_point<point> mp;
boost::geometry::read_wkt("MULTIPOINT((3 3),(4 4),(6 2))", mp);
// Create the buffer of a multi point
boost::geometry::buffer(mp, result,
distance_strategy, side_strategy,
join_strategy, end_strategy, circle_strategy);
/*<-*/ create_svg_buffer("buffer_multi_point.svg", mp, result); /*->*/
// Declare/fill a multi_polygon
boost::geometry::model::multi_polygon<polygon> mpol;
boost::geometry::read_wkt("MULTIPOLYGON(((0 1,2 5,5 3,0 1)),((1 1,5 2,5 0,1 1)))", mpol);
// Create the buffer of a multi polygon
boost::geometry::buffer(mpol, result,
distance_strategy, side_strategy,
join_strategy, end_strategy, circle_strategy);
/*<-*/ create_svg_buffer("buffer_multi_polygon.svg", mpol, result); /*->*/
return 0;
}
