/* Copyright_License {

  XCSoar Glide Computer - http://www.xcsoar.org/
  Copyright (C) 2000-2013 The XCSoar Project
  A detailed list of copyright holders can be found in the file "AUTHORS".

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
}
 */

#include "AATIsolineIntercept.hpp"

AATIsolineIntercept::AATIsolineIntercept(const AATPoint& ap)
  :AATIsoline(ap)
{
}

bool
AATIsolineIntercept::Intercept(const AATPoint &ap, const AircraftState &state,
                               const double bearing_offset, GeoPoint& ip) const
{
  AircraftState s1, s2;
  if (ell.IntersectExtended(state.location, s1.location, s2.location)) {
    if (ap.IsInSector(s1)) {
      ip = s1.location;
      return true;
    }
    if (ap.IsInSector(s2)) {
      ip = s2.location;
      return true;
    }
  }
  return false;
}
