attitude_indicator.hxx

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/*
 * SPDX-FileName: attitude_indicator.hxx
 * SPDX-FileComment: a vacuum-powered attitude indicator.
 * SPDX-License-Identifier: GPL-2.0-or-later
 * SPDX-FileContributor:  Written by David Megginson, started 2002.
 */
 
#pragma once
 
#include <simgear/props/props.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
 
#include "gyro.hxx"
 

class AttitudeIndicator : public SGSubsystem
{
public:
    AttitudeIndicator ( SGPropertyNode *node );
    virtual ~AttitudeIndicator ();
 
    // Subsystem API.
    void bind() override;
    void init() override;
    void reinit() override;
    void unbind() override;
    void update(double dt) override;
 
    // Subsystem identification.
    static const char* staticSubsystemClassId() { return "attitude-indicator"; }
 
private:
    std::string _name;
    int _num;
    std::string _suction;
 
    Gyro _gyro;
    double _gyro_spin_up, _gyro_spin_down;
    double _minVacuum;
    SGPropertyNode_ptr _minVacuum_node;
 
    SGPropertyNode_ptr _tumble_flag_node;
    SGPropertyNode_ptr _caged_node;
    SGPropertyNode_ptr _tumble_node;
    SGPropertyNode_ptr _pitch_in_node;
    SGPropertyNode_ptr _roll_in_node;
    SGPropertyNode_ptr _suction_node;
    SGPropertyNode_ptr _pitch_int_node;
    SGPropertyNode_ptr _roll_int_node;
    SGPropertyNode_ptr _pitch_out_node;
    SGPropertyNode_ptr _roll_out_node;
    SGPropertyNode_ptr _spin_node, _gyro_spin_up_node, _gyro_spin_down_node;
 
    double spin_thresh;
    double max_roll_error;
    double max_pitch_error;
};