src/Instrumentation/attitude_indicator.hxx

   1 // attitude_indicator.hxx - a vacuum-powered attitude indicator.
   2 // Written by David Megginson, started 2002.
   3 //
   4 // This file is in the Public Domain and comes with no warranty.
   5
   6
   7 #ifndef __INSTRUMENTS_ATTITUDE_INDICATOR_HXX
   8 #define __INSTRUMENTS_ATTITUDE_INDICATOR_HXX 1
   9
  10 #ifndef __cplusplus
  11 # error This library requires C++
  12 #endif
  13
  14 #include <simgear/props/props.hxx>
  15 #include <simgear/structure/subsystem_mgr.hxx>
  16
  17 #include "gyro.hxx"
  18
  19
  20 /**
  21  * Model a vacuum-powered attitude indicator.
  22  *
  23  * Input properties:
  24  *
  25  * /instrumentation/"name"/config/tumble-flag
  26  * /instrumentation/"name"/serviceable
  27  * /instrumentation/"name"/caged-flag
  28  * /instrumentation/"name"/tumble-norm
  29  * /orientation/pitch-deg
  30  * /orientation/roll-deg
  31  * "vacuum-system"/suction-inhg
  32  *
  33  * Output properties:
  34  *
  35  * /instrumentation/"name"/indicated-pitch-deg
  36  * /instrumentation/"name"/indicated-roll-deg
  37  * /instrumentation/"name"/tumble-norm
  38  */
  39 class AttitudeIndicator : public SGSubsystem
  40 {
  41
  42 public:
  43
  44     AttitudeIndicator ( SGPropertyNode *node );
  45     virtual ~AttitudeIndicator ();
  46
  47     virtual void init ();
  48     virtual void bind ();
  49     virtual void unbind ();
  50     virtual void update (double dt);
  51
  52 private:
  53
  54     string _name;
  55     int _num;
  56     string _suction;
  57
  58     Gyro _gyro;
  59
  60     SGPropertyNode_ptr _tumble_flag_node;
  61     SGPropertyNode_ptr _caged_node;
  62     SGPropertyNode_ptr _tumble_node;
  63     SGPropertyNode_ptr _pitch_in_node;
  64     SGPropertyNode_ptr _roll_in_node;
  65     SGPropertyNode_ptr _suction_node;
  66     SGPropertyNode_ptr _pitch_int_node;
  67     SGPropertyNode_ptr _roll_int_node;
  68     SGPropertyNode_ptr _pitch_out_node;
  69     SGPropertyNode_ptr _roll_out_node;
  70
  71     double spin_thresh;
  72     double max_roll_error;
  73     double max_pitch_error;
  74 };
  75
  76 #endif // __INSTRUMENTS_ATTITUDE_INDICATOR_HXX