C++ RenderWindow::update方法代码示例

void ClientApplication::run()
{
    Ogre::Root* root = mGraphicsManager->getRoot();
    Ogre::RenderWindow* window = mGraphicsManager->getWindow();

    root->getRenderSystem()->_initRenderTargets();
    root->clearEventTimes();

    boost::timer timer;

    while( !mShutdown )
    {
        if( mShutdownRequested )
        {
            mStateMachine->popTo( 0 );
            mShutdown = true;
        }

        const Real elapsed = timer.elapsed();
        timer.restart();

        mEarlyUpdateSignal();
        mEarlyFrameSignal( elapsed );
        mUpdateSignal();
        mFrameSignal( elapsed );
        mLateUpdateSignal();
        mLateFrameSignal( elapsed );

        Ogre::WindowEventUtilities::messagePump();

        // Render even when the window is inactive.
        if( window->isActive() )
        {
            root->renderOneFrame();
        }
        else if( window->isVisible() )
        {
            root->renderOneFrame();
            window->update();

#if DIVERSIA_PLATFORM == DIVERSIA_PLATFORM_WIN32
            Sleep( ( 1.0 / 60.0 ) * 1000.0 );
#else
            usleep( ( 1.0 / 60.0 ) * 1000000.0 );
#endif
        }
        else if( !window->isActive() && !window->isVisible() )
        {
#if DIVERSIA_PLATFORM == DIVERSIA_PLATFORM_WIN32
            Sleep( ( 1.0 / 60.0 ) * 1000.0 );
#else
            usleep( ( 1.0 / 60.0 ) * 1000000.0 );
#endif
        }
    }
}

void OculusDisplay::update( float wall_dt, float ros_dt )
{
  if ( !oculus_ )
  {
    return;
  }

  updateCamera();
  Ogre::RenderWindow *window = render_widget_->getRenderWindow();
  window->update(false);

  if ( oculus_->isMagCalibrated() )
  {
    setStatus( rviz::StatusProperty::Ok, "Magnetometer", "Magnetometer calibrated.");
  }
  else
  {
    setStatus( rviz::StatusProperty::Warn, "Magnetometer", "Magnetometer not calibrated. Look left/right/up/down to collect enough samples.");
  }
}

void Main::EnterMainLoop()
{
	/* Setup 3D engine */
	OgreSubsystem* ror_ogre_subsystem = RoR::Application::GetOgreSubsystem();
	assert(ror_ogre_subsystem != nullptr);
	m_viewport = ror_ogre_subsystem->GetRenderWindow()->addViewport(nullptr);
	int viewport_width = m_viewport->getActualWidth();
	m_viewport->setBackgroundColour(m_config->viewport_background_color);
	m_camera->setAspectRatio(m_viewport->getActualHeight() / viewport_width);
	m_viewport->setCamera(m_camera);

	InitializeOrRestoreGui();

	/* Setup input */
	RoR::Application::GetInputEngine()->SetKeyboardListener(m_input_handler);
	RoR::Application::GetInputEngine()->SetMouseListener(m_input_handler);

	/* Show debug box */
	m_debug_box->setVisible(true);

	while (! m_exit_loop_requested)
	{
		UpdateMainLoop();

		Ogre::RenderWindow* rw = RoR::Application::GetOgreSubsystem()->GetRenderWindow();
		if (rw->isClosed())
		{
			RoR::Application::GetMainThreadLogic()->RequestShutdown();
			break;
		}

		/* Render */
		RoR::Application::GetOgreSubsystem()->GetOgreRoot()->renderOneFrame();

		if (!rw->isActive() && rw->isVisible())
		{
			rw->update(); // update even when in background !
		}
	}

	/* Hide GUI */
	m_gui_menubar->Hide();
	if (m_gui_open_save_file_dialog->isModal())
	{
		m_gui_open_save_file_dialog->endModal(); // Hides the dialog
	}
	m_gui_delete_menu->Hide();
	// Supress node/beam panels (if visible)
	m_nodes_panel    ->HideTemporarily();
	m_beams_panel    ->HideTemporarily();
	m_hydros_panel   ->HideTemporarily();
	m_commands2_panel->HideTemporarily();
	m_shocks_panel   ->HideTemporarily();
	m_shocks2_panel  ->HideTemporarily();
    m_meshwheels2_panel     ->HideTemporarily();
    m_flexbodywheels_panel  ->HideTemporarily();

	/* Hide debug box */
	m_debug_box->setVisible(false);

	m_exit_loop_requested = false;
}

//.........这里部分代码省略.........
		Ogre::RenderWindow* lWindow = lRoot->initialise(lCreateAWindowAutomatically, lWindowTitle, lCustomCapacities);

		if (!lWindow) {
			/* ogre.cfg is not available - start with hardcoded parameters */
			unsigned int lSizeX = 800;
			unsigned int lSizeY = 600;
			bool lFullscreen = false;

			Ogre::NameValuePairList lParams;
			lParams["FSAA"] = "0";
			lParams["vsync"] = "true";
			lWindow = lRoot->createRenderWindow(lWindowTitle, lSizeX, lSizeY, lFullscreen, &lParams);
		}

		/* Create a scene manager */
		Ogre::SceneManager* lScene = lRoot->createSceneManager(Ogre::ST_GENERIC, "SceneManager");

		Ogre::SceneNode* lRootSceneNode = lScene->getRootSceneNode();

		/* Create camera */
		Ogre::Camera* lCamera = lScene->createCamera("MyCamera");

		/* Create viewport (camera <-> window) */
		Ogre::Viewport* vp = lWindow->addViewport(lCamera);

		vp->setAutoUpdated(true);
		vp->setBackgroundColour(Ogre::ColourValue(1, 0, 1));

		lCamera->setAspectRatio(float(vp->getActualWidth()) / vp->getActualHeight());
		lCamera->setPosition(Ogre::Vector3(0, 100, -1));
		lCamera->lookAt(Ogre::Vector3(0, 0, 0));

		/* Set clipping*/
		lCamera->setNearClipDistance(1.5f);
		lCamera->setFarClipDistance(3000.0f);

		/* Lighting */
		Ogre::Light* lLight = lScene->createLight("MainLight");
		lLight->setPosition(Ogre::Vector3(0, 100, 0));

		/* Resource manager */
		Ogre::String lRcGroupName = "Main group";
		initResourceMainGroup(lRcGroupName);

		/* Load model */
		Ogre::Entity* lShipEntity = lScene->createEntity("airship.mesh");
		lShipEntity->setCastShadows(false);

		Ogre::SceneNode* lShipNode = lRootSceneNode->createChildSceneNode();
		lShipNode->attachObject(lShipEntity);
		lShipNode->setScale(Ogre::Vector3(3.15f, 3.15f, 3.15f));

		/* Starship start point */
		Ogre::Vector3 razorSP(0, -200, -100);
		lShipNode->setPosition(razorSP);

		/* Sprite billboard */
		Ogre::SceneNode* lSpriteNode = lRootSceneNode->createChildSceneNode();
		Ogre::BillboardSet* lBillboardSet = lScene->createBillboardSet();
		lBillboardSet->setMaterialName("enemy_01", lRcGroupName);
		lBillboardSet->setTextureStacksAndSlices(1, 4);
		Ogre::Billboard* lSpriteBillboard = lBillboardSet->createBillboard(Ogre::Vector3(0, 0, 0));
		lSpriteBillboard->setDimensions(48.0f / 2.0f, 58.0f / 2.0f);
		lSpriteBillboard->setTexcoordIndex(1);
		lSpriteNode->attachObject(lBillboardSet);
		lSpriteNode->setPosition(Ogre::Vector3(0, -200, 100));

		/* Obtain the timer pointer */
		Ogre::Timer* lTimer = lRoot->getTimer();

		/* Skip all the messages */
		lWindow->setAutoUpdated(false);
		lRoot->clearEventTimes();

		while (!lWindow->isClosed()) {
			float angle = Ogre::Math::Sin(float(lTimer->getMilliseconds()) * Ogre::Math::PI / 2000.0f) * Ogre::Math::PI / 4.0f;
			float diplacement = Ogre::Math::Cos(float(lTimer->getMilliseconds()) * Ogre::Math::PI / 2000.0f) * 100.0f;
			lShipNode->setOrientation(Ogre::Quaternion(Ogre::Radian(angle), Ogre::Vector3(0, 0, 1)));
			lShipNode->setPosition(razorSP + Ogre::Vector3(diplacement, 0.0f, 0.0f));

			unsigned int spriteFrame = (lTimer->getMilliseconds() / 125) % 2;
			lSpriteBillboard->setTexcoordIndex(spriteFrame);

			lWindow->update(false);
			lWindow->swapBuffers();
			lRoot->renderOneFrame();

			Ogre::WindowEventUtilities::messagePump();
		}
		Ogre::LogManager::getSingleton().logMessage("Render window closed.");
	}
	catch (Ogre::Exception &e) {
		std::cerr << "Ogre::Exception: " << e.what() << std::endl;
	}
	catch (std::exception &e) {
		std::cerr << "std::exception: " << e.what() << std::endl;
	}

	return 0;
}