title: Lines intersection using Boost Geometry
body: <p>How line can be represented using Boost Geometry?</p>
  
  <p>I don't need finite segment, but I need infinite lines (maybe <a href="http://www.boost.org/doc/libs/1_47_0/libs/geometry/doc/html/geometry/reference/models/model_segment.html" rel="nofollow">Segment</a> or <a href="http://www.boost.org/doc/libs/1_58_0/libs/geometry/doc/html/geometry/reference/concepts/concept_linestring.html" rel="nofollow">Linestring</a> can be extended?)</p>
  
  <p>As I understand I can use <code>boost::geometry::intersects</code>, but I don't know how to define infinite line.</p>