1 // Boost.Geometry (aka GGL, Generic Geometry Library)
4 // Copyright (c) 2014 Barend Gehrels, Amsterdam, the Netherlands.
6 // Use, modification and distribution is subject to the Boost Software License,
7 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
8 // http://www.boost.org/LICENSE_1_0.txt)
11 //` Shows how the end_flat strategy can be used as a EndStrategy to create flat ends
13 #include <boost/geometry.hpp>
14 #include <boost/geometry/geometries/point_xy.hpp>
15 #include <boost/geometry/geometries/geometries.hpp>
16 /*<-*/ #include "../examples_utils/create_svg_buffer.hpp" /*->*/
20 typedef boost::geometry::model::d2::point_xy
<double> point
;
21 typedef boost::geometry::model::linestring
<point
> linestring
;
22 typedef boost::geometry::model::polygon
<point
> polygon
;
24 // Declare the flat-end strategy
25 boost::geometry::strategy::buffer::end_flat end_strategy
;
27 // Declare other strategies
28 boost::geometry::strategy::buffer::distance_symmetric
<double> distance_strategy(1.0);
29 boost::geometry::strategy::buffer::side_straight side_strategy
;
30 boost::geometry::strategy::buffer::join_round join_strategy
;
31 boost::geometry::strategy::buffer::point_circle point_strategy
;
33 // Declare/fill a multi linestring
34 boost::geometry::model::multi_linestring
<linestring
> ml
;
35 boost::geometry::read_wkt("MULTILINESTRING((3 5,5 10,7 5),(7 7,11 10,15 7,19 10))", ml
);
37 // Create the buffered geometry with flat ends
38 boost::geometry::model::multi_polygon
<polygon
> result
;
39 boost::geometry::buffer(ml
, result
,
40 distance_strategy
, side_strategy
,
41 join_strategy
, end_strategy
, point_strategy
);
42 /*<-*/ create_svg_buffer("buffer_end_flat.svg", ml
, result
); /*->*/