46 lines
860 B
C++
46 lines
860 B
C++
#ifndef GUI_FPSCOUNTER_H__
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#define GUI_FPSCOUNTER_H__
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#include <numeric>
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#include "GUI/Frame.h"
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#include "GUI/NumberFrame.h"
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namespace dd
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{
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namespace GUI
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{
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class FPSCounter : public Frame
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{
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public:
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FPSCounter(Frame* parent, std::string name)
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: Frame(parent, name)
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{
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m_FrameTimes.resize(m_MaxSamples);
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m_Numbers = new GUI::NumberFrame(this, "FPSCounterNumberFrame");
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}
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virtual void Update(double dt)
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{
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m_FrameTimes[m_CurrentFrame % m_MaxSamples] = dt;
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double sum = std::accumulate(m_FrameTimes.begin(), m_FrameTimes.end(), 0.0);
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sum /= std::min(m_CurrentFrame, m_MaxSamples);
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m_Numbers->SetNumber(std::round(1.0 / sum));
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m_CurrentFrame++;
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}
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private:
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NumberFrame* m_Numbers = nullptr;
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int m_MaxSamples = 100;
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int m_CurrentFrame = 0;
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std::vector<double> m_FrameTimes;
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};
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}
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}
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#endif
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