void FPS::Update()
{
Delta_Time = World_Time; // Pobieramy wczeœniejszy czas
World_Time = glfwGetTime() * 1000; // Uaktualnienie czasu
updates++; // Naliczenie aktualizcji
// Blokada klatek
if(max > 0)
{
if( World_Time - Start_Time < ( 1000.0f / max ) * updates ) // Jeœli dotychczasowy czas jest mniejszy ni¿ zak³adany
{
SleepFor( ( (1000.0f / max) * updates ) - ( World_Time - Start_Time) ); // Odczekuje ró¿nicê czasów
}
}
World_Time = glfwGetTime() * 1000; // Uaktualnia czas po odczekiwaniu ró¿nicy
Delta_Time = World_Time - Delta_Time; // Oblicza delte
if( updates == frames) // Sprawdza iloϾ klatek
{
rate = ( 1000 * frames ) / ( World_Time - Start_Time); // Oblicza œredni wynik klatek na sekundê
World_Time = glfwGetTime() * 1000; // Wszystko resetuje
Start_Time = glfwGetTime() * 1000;
updates=0;
}
}
void price::thread_work()
{
show_instruments();
while (true)
{
SleepFor(1000);
_Get_Output_Mutex
chg_price();
_Release_Output_Mutex
}
}
SteadyClock::time_point SleepUntil(SteadyClock::time_point time) {
// Early exit if we are already past the deadline
auto now = SteadyClock::now();
if (now >= time) {
// We were already past our deadline, which means that the previous frame
// ran for too long. Use the current time as the base for the next frame.
return now;
}
// Perform the actual sleep
SleepFor(time - now);
// We may have overslept, so use the target time rather than the
// current time as the base for the next frame. That way we ensure
// that the frame rate remains consistent.
return time;
}
