src/NMEA/MoreData.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_MORE_DATA_HPP
  25 #define XCSOAR_MORE_DATA_HPP
  26
  27 #include "NMEA/Info.hpp"
  28
  29 #include <type_traits>
  30
  31 /**
  32  * A wrapper for NMEA_INFO which adds a few attributes that are cheap
  33  * to calculate.  They are managed by #BasicComputer inside
  34  * #MergeThread.
  35  */
  36 struct MoreData : public NMEAInfo {
  37   /** Altitude used for navigation (GPS or Baro) */
  38   fixed nav_altitude;
  39
  40   /** Energy height excess to slow to best glide speed */
  41   fixed energy_height;
  42
  43   /** Nav Altitude + Energy height (m) */
  44   fixed TE_altitude;
  45
  46   /** GPS-based vario */
  47   fixed gps_vario;
  48   /** GPS-based vario including energy height */
  49   fixed gps_vario_TE;
  50
  51   Validity gps_vario_available;
  52
  53   /**
  54    * Current vertical speed (total energy).  This is set to
  55    * TotalEnergyVario if available, and falls back to GPSVario.  It is
  56    * maintained by DeviceBlackboard::Vario().
  57    */
  58   fixed brutto_vario;
  59
  60   Validity brutto_vario_available;
  61
  62   void Reset();
  63
  64   bool NavAltitudeAvailable() const {
  65     return baro_altitude_available || gps_altitude_available;
  66   }
  67 };
  68
  69 static_assert(std::is_trivial<MoreData>::value, "type is not trivial");
  70
  71 #endif