mgl_chrono_elapsed_timer.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_CHRONO_ELAPSED_TIMER_H_1614115660
#define INCGUARD_MGL_CHRONO_ELAPSED_TIMER_H_1614115660
 
#include <mgl/system/mgl_system_chrono.h>
 
namespace MGL::System
{
class ElapsedTimer
{
public:
    ElapsedTimer() noexcept;
    ElapsedTimer(TickTime tickTime) noexcept;
 
    void Lap() noexcept;
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr float GetLappedTimeMillisecond() const noexcept
    {
        return _lappedTimeNanosecond / 1000.0f / 1000.0f;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr float GetLappedTimeMicrosecond() const noexcept
    {
        return _lappedTimeNanosecond / 1000.0f;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr float GetLappedTimeNanosecond() const noexcept
    {
        return _lappedTimeNanosecond;
    }
 
private:
    TickTime _tick;
    float _lappedTimeNanosecond;
};
}    // namespace MGL::System
 
#endif    // INCGUARD_MGL_CHRONO_ELAPSED_TIMER_H_1614115660
 
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