| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| // QuickBook Example |
| |
| // Copyright (c) 2011 Barend Gehrels, Amsterdam, the Netherlands. |
| |
| // Use, modification and distribution is subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| //[intersects |
| //` Check if two linestrings intersect each other |
| |
| #include <iostream> |
| |
| #include <boost/geometry.hpp> |
| #include <boost/geometry/geometries/linestring.hpp> |
| #include <boost/geometry/geometries/point_xy.hpp> |
| #include <boost/geometry/domains/gis/io/wkt/wkt.hpp> |
| |
| int main() |
| { |
| // Calculate the intersects of a cartesian polygon |
| typedef boost::geometry::model::d2::point_xy<double> P; |
| bg::model::linestring<P> line1, line2; |
| |
| boost::geometry::read_wkt("linestring(1 1,2 2)", line1); |
| boost::geometry::read_wkt("linestring(2 1,1 2)", line2); |
| |
| bool b = boost::geometry::intersects(line1, line2); |
| |
| std::cout << "Intersects: " << (b ? "YES" : "NO") << std::endl; |
| |
| return 0; |
| } |
| |
| //] |
| |
| |
| //[intersects_output |
| /*` |
| Output: |
| [pre |
| Intersects: YES |
| ] |
| */ |
| //] |
