DiscreteInterpolator.h

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#pragma once

#include "IInterpolator.h"



template< typename KeyType >
class DiscreteInterpolator : public IInterpolator< KeyType >
{
private:
protected:
public:
    explicit        DiscreteInterpolator    () = default;
    explicit        DiscreteInterpolator    ( const Key< KeyType >& leftKey,
                                              const Key< KeyType >& rightKey,
                                              UPtr< const IInterpolator< KeyType > >& leftInterpolator,
                                              UPtr< const IInterpolator< KeyType > >& rightInterpolator );
                    ~DiscreteInterpolator() = default;

    virtual KeyType         Interpolate     ( TimeType time, Key< KeyType >& left, Key< KeyType >& right ) override;

    virtual void            Update          ( const Key< KeyType >& leftKey,
                                              const Key< KeyType >& rightKey,
                                              UPtr< const IInterpolator< KeyType > >& leftInterpolator,
                                              UPtr< const IInterpolator< KeyType > >& rightInterpolator ) override;

    virtual KeyType         LeftTangent     ( const Key< KeyType >& left, const Key< KeyType >& right ) const override;
    virtual KeyType         RightTangent    ( const Key< KeyType >& left, const Key< KeyType >& right ) const override;
};

//====================================================================================//
//          Implementation  
//====================================================================================//


// ================================ //
//
template< typename KeyType >
inline              DiscreteInterpolator< KeyType >::DiscreteInterpolator   ( const Key< KeyType >& leftKey,
                                                                              const Key< KeyType >& rightKey,
                                                                              UPtr< const IInterpolator< KeyType > >& leftInterpolator,
                                                                              UPtr< const IInterpolator< KeyType > >& rightInterpolator )
{}

// ================================ //
//
template< typename KeyType >
inline KeyType      DiscreteInterpolator< KeyType >::Interpolate    ( TimeType time, Key< KeyType >& left, Key< KeyType >& right )
{
    return left.Value;
}

// ================================ //
//
template< typename KeyType >
inline void         DiscreteInterpolator< KeyType >::Update         ( const Key< KeyType >& leftKey, const Key< KeyType >& rightKey, UPtr< const IInterpolator< KeyType > >& leftInterpolator, UPtr< const IInterpolator< KeyType > >& rightInterpolator )
{}

// ================================ //
//
template< typename KeyType >
inline KeyType      DiscreteInterpolator< KeyType >::LeftTangent    ( const Key< KeyType >& left, const Key< KeyType >& right ) const
{
    return KeyType( 0 );
}

// ================================ //
//
template< typename KeyType >
inline KeyType      DiscreteInterpolator< KeyType >::RightTangent   ( const Key< KeyType >& left, const Key< KeyType >& right ) const
{
    return KeyType( 0 );
}