C++ (Cpp) FlatRay::DistinctIntersection Exemples

Exemple #1

AirspaceIntersectionVector
AirspacePolygon::Intersects(const GeoPoint &start, const GeoPoint &end,
                            const TaskProjection &projection) const
{
  const FlatRay ray(projection.ProjectInteger(start),
                    projection.ProjectInteger(end));

  AirspaceIntersectSort sorter(start, *this);

  for (auto it = m_border.begin(); it + 1 != m_border.end(); ++it) {

    const FlatRay r_seg(it->GetFlatLocation(), (it + 1)->GetFlatLocation());
    fixed t = ray.DistinctIntersection(r_seg);
    if (!negative(t))
      sorter.add(t, projection.Unproject(ray.Parametric(t)));
  }

  return sorter.all();
}