mag_compass.hxx

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/*
 * SPDX-License-Identifier: CC0-1.0
 * 
 * mag_compass.hxx - models a magnetic compass
 * Written by David Megginson, started 2002.
 * 
 * This file is in the Public Domain and comes with no warranty.
*/
 
#pragma once
 
#ifndef __cplusplus
# error This library requires C++
#endif
 
#include <simgear/props/props.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/math/interpolater.hxx>
 

class MagCompass : public SGSubsystem
{
public:
    MagCompass ( SGPropertyNode *node);
    MagCompass ();
    virtual ~MagCompass ();
 
    // Subsystem API.
    void init() override;
    void reinit() override;
    void update(double dt) override;
 
    // Subsystem identification.
    static const char* staticSubsystemClassId() { return "magnetic-compass"; }
 
private:
    double _rate_degps;
 
    double _last_pitch, _last_roll, _cfg_viscosity;
 
    std::string _name;
    int _num;
    SGSharedPtr<SGInterpTable> _deviation_table;
    SGPropertyNode_ptr _deviation_node;
 
    SGPropertyNode_ptr _serviceable_node;
    SGPropertyNode_ptr _pitch_offset_node;
    SGPropertyNode_ptr _roll_node;
    SGPropertyNode_ptr _pitch_node;
    SGPropertyNode_ptr _heading_node;
    SGPropertyNode_ptr _beta_node;
    SGPropertyNode_ptr _dip_node;
    SGPropertyNode_ptr _x_accel_node;
    SGPropertyNode_ptr _y_accel_node;
    SGPropertyNode_ptr _z_accel_node;
    SGPropertyNode_ptr _fluid_viscosity;
    SGPropertyNode_ptr _out_node;
    SGPropertyNode_ptr _roll_out_node;
    SGPropertyNode_ptr _pitch_out_node;
};