Method update

src/openpose/gui/gui3D.cpp:525–557

    }

    void Gui3D::update()
    {
        try
        {
            // 2-D rendering
            // Display all 2-D views
            if (mDisplayMode == DisplayMode::DisplayAll || mDisplayMode == DisplayMode::Display2D)
                Gui::update();
            // 3-D rendering
            #ifdef USE_3D_RENDERER
                if (mDisplayMode == DisplayMode::DisplayAll || mDisplayMode == DisplayMode::Display3D)
                {
                    // OpenGL Rendering
                    std::unique_lock<std::mutex> lock{gKeypoints3D.mutex};
                    // Esc pressed -> Close program
                    if (sLastKeyPressed == 27)
                        if (spIsRunning != nullptr)
                            *spIsRunning = false;
                    lock.unlock();
                    // OpenCL - Run main loop event
                    // It is run outside loop, or it would get visually stuck if loop to slow
                    idleFunction();
                    glutMainLoopEvent();
                    // This alternative can only be called once, and it will block the thread until program exit
                    // glutMainLoop();
                }
            #endif
        }
        catch (const std::exception& e)
        {
            error(e.what(), __LINE__, __FUNCTION__, __FILE__);
        }
    }

    Matrix Gui3D::readCvMat()
    {