BaseOrbitDesigner.hpp

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#pragma once
 
#include "AstGlobal.h"
#include "AstCore/OrbitElement.hpp"
#include "AstCore/Frame.hpp"
#include "AstCore/CelestialBody.hpp"
#include "AstCore/TimePoint.hpp"
#include "AstUtil/SharedPtr.hpp"
 
 
AST_NAMESPACE_BEGIN
 
class AST_CORE_API IOrbitDesigner
{
public:
    IOrbitDesigner() = default;
    ~IOrbitDesigner() = default;
 
    virtual errc_t getOrbitEpoch(TimePoint& orbitEpoch) const = 0;
 
    virtual errc_t getOrbitState(ModOrbElem &orbElem) const = 0;
 
    virtual errc_t getCoordFrame(bool& useCoordEpoch, TimePoint& coordEpoch, SharedPtr<Frame>& coordFrame) const = 0;
};
 
 
class AST_CORE_API BaseOrbitDesigner: public IOrbitDesigner
{
public:
    BaseOrbitDesigner();
    BaseOrbitDesigner(CelestialBody* body);
    ~BaseOrbitDesigner() = default;
 
    using IOrbitDesigner::getOrbitState;
 
    static CelestialBody* getDefaultCelestialBody();
 
    CelestialBody* getCelestialBody() const { return celestialBody_.get(); }
 
    double getGM() const { return celestialBody_?celestialBody_->getGM(): 0; }
    
    double getJ2() const {return celestialBody_?celestialBody_->getJ2():0; }
 
    double getBodyRadius() const { return celestialBody_?celestialBody_->getRadius():0; }
 
    errc_t getOrbitEpoch(TimePoint& orbitEpoch) const final{ orbitEpoch = orbitEpoch_; return 0; };
 
    errc_t getOrbitState(CartState &cartState) const;
 
    errc_t getOrbitState(OrbElem &orbElem) const;
 
    errc_t getCoordFrame(bool& useCoordEpoch, TimePoint& coordEpoch, SharedPtr<Frame>& coordFrame) const override;
protected:
    SharedPtr<CelestialBody> celestialBody_;    
    TimePoint orbitEpoch_{};    
};
 
 
AST_NAMESPACE_END