src/Engine/Task/ObservationZones/SectorZone.cpp

   1 /* Copyright_License {
   2
   3   XCSoar Glide Computer - http://www.xcsoar.org/
   4   Copyright (C) 2000-2013 The XCSoar Project
   5   A detailed list of copyright holders can be found in the file "AUTHORS".
   6
   7   This program is free software; you can redistribute it and/or
   8   modify it under the terms of the GNU General Public License
   9   as published by the Free Software Foundation; either version 2
  10   of the License, or (at your option) any later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with this program; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 }
  21 */
  22
  23 #include "SectorZone.hpp"
  24 #include "Boundary.hpp"
  25 #include "Geo/GeoVector.hpp"
  26
  27 OZBoundary
  28 SectorZone::GetBoundary() const
  29 {
  30   OZBoundary boundary;
  31
  32   if (arc_boundary)
  33     boundary.GenerateArcExcluding(GetReference(), GetRadius(),
  34                                   GetStartRadial(), GetEndRadial());
  35
  36   boundary.push_front(GetSectorEnd());
  37   boundary.push_front(GetSectorStart());
  38   boundary.push_front(GetReference());
  39
  40   return boundary;
  41 }
  42
  43 fixed
  44 SectorZone::ScoreAdjustment() const
  45 {
  46   return fixed(0);
  47 }
  48
  49 void
  50 SectorZone::UpdateSector()
  51 {
  52   sector_start = GeoVector(GetRadius(), start_radial).EndPoint(GetReference());
  53   sector_end = GeoVector(GetRadius(), end_radial).EndPoint(GetReference());
  54 }
  55
  56 bool
  57 SectorZone::IsInSector(const GeoPoint &location) const
  58 {
  59   GeoVector f(GetReference(), location);
  60
  61   return f.distance <= GetRadius() && IsAngleInSector(f.bearing);
  62 }
  63
  64 void
  65 SectorZone::SetStartRadial(const Angle x)
  66 {
  67   start_radial = x;
  68   UpdateSector();
  69 }
  70
  71 void
  72 SectorZone::SetEndRadial(const Angle x)
  73 {
  74   end_radial = x;
  75   UpdateSector();
  76 }
  77
  78 bool
  79 SectorZone::IsAngleInSector(const Angle b) const
  80 {
  81   // Quit early if we have a full circle
  82   if ((end_radial - start_radial).AsBearing() <= Angle::FullCircle() / 512)
  83     return true;
  84
  85   return b.Between(start_radial, end_radial);
  86 }
  87
  88 bool
  89 SectorZone::Equals(const ObservationZonePoint &other) const
  90 {
  91   const SectorZone &z = (const SectorZone &)other;
  92
  93   return CylinderZone::Equals(other) &&
  94     start_radial == z.GetStartRadial() &&
  95     end_radial == z.GetEndRadial();
  96 }