asyncrenderloop.cpp

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/*
 * Copyright (C) 2025-2025 QuasarApp.
 * Distributed under the lgplv3 software license, see the accompanying
 * Everyone is permitted to copy and distribute verbatim copies
 * of this license document, but changing it is not allowed.
*/
 
#include "asyncrenderloop.h"
#include <QThread>
 
namespace QH {
 
AsyncRenderLoop::AsyncRenderLoop(QThread *thread, QObject *ptr): Async(thread, ptr) {
}
 
AsyncRenderLoop::~AsyncRenderLoop() {
    AsyncRenderLoop::stop();
}
 
void QH::AsyncRenderLoop::run() {
    if (auto && thrd = thread()) {
        m_run = true;
        thrd->start();
 
        asyncLauncher([this](){
            renderLoopPrivate();
            return true;
        });
    }
 
}
 
void QH::AsyncRenderLoop::stop() {
    m_run = false;
    thread()->quit();
    thread()->wait();
}
 
bool AsyncRenderLoop::isRun() const {
    return m_run && (thread() && thread()->isRunning());
}
 
void QH::AsyncRenderLoop::renderLoopPrivate() {
    auto&& currentTime = std::chrono::high_resolution_clock::now();
 
    _lastIterationTime = currentTime;
    int iterationTime = 0;
 
    while (m_run) {
        renderIteration(iterationTime);
 
        currentTime = std::chrono::high_resolution_clock::now();
        iterationTime = std::chrono::duration_cast<std::chrono::microseconds>(currentTime - _lastIterationTime).count();
        _lastIterationTime = currentTime;
    }
}
 
} // namespace QH