/* 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 "SectorZone.hpp"
#include "Boundary.hpp"
#include "Geo/GeoVector.hpp"

OZBoundary
SectorZone::GetBoundary() const
{
  OZBoundary boundary;

  if (arc_boundary)
    boundary.GenerateArcExcluding(GetReference(), GetRadius(),
                                  GetStartRadial(), GetEndRadial());

  boundary.push_front(GetSectorEnd());
  boundary.push_front(GetSectorStart());
  boundary.push_front(GetReference());

  return boundary;
}

fixed
SectorZone::ScoreAdjustment() const
{
  return fixed(0);
}

void 
SectorZone::UpdateSector() 
{
  sector_start = GeoVector(GetRadius(), start_radial).EndPoint(GetReference());
  sector_end = GeoVector(GetRadius(), end_radial).EndPoint(GetReference());
}

bool 
SectorZone::IsInSector(const GeoPoint &location) const
{
  GeoVector f(GetReference(), location);

  return f.distance <= GetRadius() && IsAngleInSector(f.bearing);
}

void
SectorZone::SetStartRadial(const Angle x)
{
  start_radial = x;
  UpdateSector();
}

void
SectorZone::SetEndRadial(const Angle x)
{
  end_radial = x;
  UpdateSector();
}

bool
SectorZone::IsAngleInSector(const Angle b) const
{
  // Quit early if we have a full circle
  if ((end_radial - start_radial).AsBearing() <= Angle::FullCircle() / 512)
    return true;

  return b.Between(start_radial, end_radial);
}

bool
SectorZone::Equals(const ObservationZonePoint &other) const
{
  const SectorZone &z = (const SectorZone &)other;

  return CylinderZone::Equals(other) &&
    start_radial == z.GetStartRadial() &&
    end_radial == z.GetEndRadial();
}
