...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
template<typename Geometry> bool intersects(Geometry const & geometry)
Type |
Concept |
Name |
Description |
---|---|---|---|
Geometry const & |
Any type fulfilling a Geometry Concept |
geometry |
A model of the specified concept |
Returns true if the geometry \1
Either
#include <boost/geometry.hpp>
Or
#include <boost/geometry/algorithms/intersects.hpp>
The function intersects implements function Intersects from the OGC Simple Feature Specification.
The version with one parameter is additional and not described in the OGC standard
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> int main() { // Calculate the intersects of a cartesian polygon typedef boost::geometry::model::d2::point_xy<double> P; boost::geometry::model::linestring<P> line1, line2; boost::geometry::read_wkt("linestring(1 1,2 2,3 3)", line1); boost::geometry::read_wkt("linestring(2 1,1 2,4 0)", line2); bool b = boost::geometry::intersects(line1, line2); std::cout << "Intersects: " << (b ? "YES" : "NO") << std::endl; return 0; }
Output:
Intersects: YES