gui_frame_clock.h

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#pragma once
 
#include <cstdint>
 
namespace tachyon
{

    class FrameClock
    {
    public:
        void Tick(int64_t nowNanos, float refreshHz);

        double Seconds() const { return m_seconds; }
        double DeltaSeconds() const { return m_deltaSeconds; }
 
    private:
        int64_t m_originNanos  = 0;
        bool    m_started      = false;
        double  m_seconds      = 0.0;
        double  m_deltaSeconds = 0.0;
    };

}