src/NMEA/Attitude.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_ATTITUDE_HPP
  25 #define XCSOAR_ATTITUDE_HPP
  26
  27 #include "Math/Angle.hpp"
  28 #include "Validity.hpp"
  29
  30 struct AttitudeState
  31 {
  32   bool bank_angle_available;
  33   bool pitch_angle_available;
  34
  35   /** Estimated bank angle */
  36   Angle bank_angle;
  37
  38   /** Estimated pitch angle */
  39   Angle pitch_angle;
  40
  41   /** Estimated heading */
  42   Angle heading;
  43   Validity heading_available;
  44   bool heading_computed;
  45
  46   void Reset() {
  47     bank_angle_available = false;
  48     pitch_angle_available = false;
  49     heading_available.Clear();
  50     heading_computed = false;
  51   }
  52
  53   bool IsHeadingUseable() const {
  54     return heading_available || heading_computed;
  55   }
  56
  57   /**
  58    * Adds data from the specified object, unless already present in
  59    * this one.
  60    */
  61   void Complement(const AttitudeState &add);
  62
  63   void Expire(fixed now);
  64 };
  65
  66 #endif