boost_segment

Boost::Geometry::Model::Segment

实例

// header 有两种载入方式
// Either:   #include <boost/geometry/geometries/geometries.hpp>
// Or:       #include <boost/geometry/geometries/segment.hpp>
#include <iostream>
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/geometries.hpp>

namespace bg = boost::geometry;

int main()
{
    typedef bg::model::point<double, 2, bg::cs::cartesian> point_t;
    typedef bg::model::segment<point_t> segment_t;

    segment_t seg1;
    segment_t seg2(point_t(0.0, 0.0), point_t(5.0, 5.0));

#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX

    segment_t seg3{{0.0, 0.0}, {5.0, 5.0}};

#endif

    bg::set<0, 0>(seg1, 1.0);
    bg::set<0, 1>(seg1, 2.0);
    bg::set<1, 0>(seg1, 3.0);
    bg::set<1, 1>(seg1, 4.0);

    double x0 = bg::get<0, 0>(seg1);
    double y0 = bg::get<0, 1>(seg1);
    double x1 = bg::get<1, 0>(seg1);
    double y1 = bg::get<1, 1>(seg1);

    std::cout << x0 << ", " << y0 << ", " << x1 << ", " << y1 << std::endl;

    return 0;
}