MRFrameCounter.h

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#pragma once
 
#include "MRViewerFwd.h"
#include <chrono>
 
namespace MR
{
 
 
class FrameCounter
{
public:
    size_t totalFrameCounter{ 0 };
    size_t swappedFrameCounter{ 0 };
    size_t startFrameNum{ 0 };
    size_t fps{ 0 };
    std::chrono::duration<double> drawTimeMilliSec{ 0 };
 
    void startDraw() { startDrawTime_ = std::chrono::high_resolution_clock::now(); }
    MRVIEWER_API void endDraw( bool swapped );
    MRVIEWER_API void reset();
 
private:
    long long startFPSTime_{ 0 };
    std::chrono::time_point<std::chrono::high_resolution_clock> startDrawTime_;
};
 
}