AirspaceIntersectionVector
AirspacePolygon::Intersects(const GeoPoint &start, const GeoPoint &end) const
{
const FlatRay ray(m_task_projection->project(start),
m_task_projection->project(end));
AirspaceIntersectSort sorter(start, end, *this);
for (auto it = m_border.begin(); it + 1 != m_border.end(); ++it) {
const FlatRay r_seg(it->get_flatLocation(), (it + 1)->get_flatLocation());
fixed t;
if (ray.IntersectsDistinct(r_seg, t))
sorter.add(t, m_task_projection->unproject(ray.Parametric(t)));
}
return sorter.all();
}
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();
}