C++ scenemanager::MovableObjectIterator类代码示例

/**
 * @brief render a frame
 * @author Kito Berg-Taylor
 */
void THIS::paintGL()
{
    if (!initialised)
        initializeOgre();

    for (Ogre::SceneManager::MovableObjectIterator mit = mSceneMgr->getMovableObjectIterator("Entity");mit.hasMoreElements(); mit.moveNext() )
    {
        Ogre::Entity *entity = static_cast<Ogre::Entity*>(mit.peekNextValue());
        if (entity->hasSkeleton() )
        {
            for (Ogre::AnimationStateIterator animIt = entity->getAllAnimationStates()->getAnimationStateIterator(); animIt.hasMoreElements(); animIt.moveNext() )
            {
                Ogre::AnimationState *animState = animIt.peekNextValue();
                if ( animState->getEnabled() )
                {
                    animState->addTime(mWindow->getBestFPS()/10000);
                }
            }
        }
    }

    //Ogre::WindowEventUtilities::messagePump();
    mRoot->renderOneFrame();


}

void RttManager::CDepthListener::postRenderTargetUpdate(const Ogre::RenderTargetEvent& evt)
{
  Hydrax *mHydrax = mRttManager->mHydrax;

  Ogre::SceneManager::MovableObjectIterator EntityIterator = mHydrax->getSceneManager()->getMovableObjectIterator("Entity");
  Ogre::Entity* CurrentEntity;
  unsigned int k;

  while (EntityIterator.hasMoreElements()) {
    CurrentEntity = static_cast<Ogre::Entity*>(EntityIterator.peekNextValue());

    for (k = 0; k < CurrentEntity->getNumSubEntities(); k++) {
      CurrentEntity->getSubEntity(k)->setMaterialName(mMaterials.front());

      mMaterials.pop();
    }

    EntityIterator.moveNext();
  }

  mHydrax->getMesh()->getEntity()->setVisible(true);
  mHydrax->getGodRaysManager()->setVisible(false);
  mHydrax->getMesh()->getEntity()->setRenderQueueGroup(Ogre::RENDER_QUEUE_1);

  if (Ogre::Math::Abs(mHydrax->getPosition().y - mHydrax->getCamera()->getPosition().y) > mHydrax->getPlanesError()) {
    if (mHydrax->_isCurrentFrameUnderwater()) {
      mRttManager->mPlanes[RTT_DEPTH]->normal = -mRttManager->mPlanes[RTT_DEPTH]->normal;
      mRttManager->mPlanes[RTT_DEPTH]->getParentNode()->translate(0, +mHydrax->getPlanesError(), 0);
    } else {
      mRttManager->mPlanes[RTT_DEPTH]->getParentNode()->translate(0, -mHydrax->getPlanesError(), 0);
    }

    mHydrax->getCamera()->disableCustomNearClipPlane();
  }
}

	void DemoGameLogic::update(void)
	{
		mLastFrameTime = mCurrentTime;
		mCurrentTime = mTime->elapsed();

		float timeElapsedInSeconds = (mCurrentTime - mLastFrameTime) / 1000.0f;

		for (Ogre::SceneManager::MovableObjectIterator moi = mSceneManager->getMovableObjectIterator("Entity"); moi.hasMoreElements(); moi.moveNext())
		{
			Ogre::Entity *entity = static_cast<Ogre::Entity*>(moi.peekNextValue());

			Ogre::AnimationStateSet* animationStateSet = entity->getAllAnimationStates();		
			if(animationStateSet && animationStateSet->hasAnimationState("Walk"))
			{
				Ogre::AnimationState* walkAnimationState = animationStateSet->getAnimationState("Walk");
				walkAnimationState->addTime(timeElapsedInSeconds);
			}
		}

		float distance = mCameraSpeed * timeElapsedInSeconds;

		if(mKeyStates[Qt::Key_W] == KS_PRESSED)
		{
			mCamera->setPosition(mCamera->getPosition() + mCamera->getDirection() * distance);
		}
		if(mKeyStates[Qt::Key_S] == KS_PRESSED)
		{
			mCamera->setPosition(mCamera->getPosition() - mCamera->getDirection() * distance);
		}
		if(mKeyStates[Qt::Key_A] == KS_PRESSED)
		{
			mCamera->setPosition(mCamera->getPosition() - mCamera->getRight() * distance);
		}
		if(mKeyStates[Qt::Key_D] == KS_PRESSED)
		{
			mCamera->setPosition(mCamera->getPosition() + mCamera->getRight() * distance);
		}

		if(!mIsFirstFrame)
		{
			QPoint mouseDelta = mCurrentMousePos - mLastFrameMousePos;
			mCamera->yaw(Ogre::Radian(-mouseDelta.x() * timeElapsedInSeconds));
			mCamera->pitch(Ogre::Radian(-mouseDelta.y() * timeElapsedInSeconds));

			int wheelDelta = mCurrentWheelPos - mLastFrameWheelPos;
			Ogre::Radian fov = mCamera->getFOVy();
			fov += Ogre::Radian(-wheelDelta * 0.001);
			fov = (std::min)(fov, Ogre::Radian(2.0f));
			fov = (std::max)(fov, Ogre::Radian(0.5f));
			mCamera->setFOVy(fov);
		}
		mLastFrameMousePos = mCurrentMousePos;
		mLastFrameWheelPos = mCurrentWheelPos;

		mIsFirstFrame = false;
	}

void ResourceGroupReloader::updateOnEveryRenderable()
{

	//1/ get all the available object type (entity, light, user defined types ...)
	std::vector<std::string> allAvailableTypes; 
	Ogre::Root::MovableObjectFactoryIterator iterFactory = Ogre::Root::getSingleton().getMovableObjectFactoryIterator();
	for(;iterFactory.hasMoreElements();)
	{
		Ogre::MovableObjectFactory* factory = iterFactory.getNext();
		allAvailableTypes.push_back(factory->getType());
	}

	UpdateMaterialRenderableVisitor lRenderableVisitor;

	//2/ for each scene manager, lets visit renderables!
	// unfortunately that does not cover all renderables type... (overlays...)
	Ogre::SceneManagerEnumerator::SceneManagerIterator iterSceneManager = Ogre::Root::getSingleton().getSceneManagerIterator();
	for(;iterSceneManager.hasMoreElements();)
	{
		Ogre::SceneManager * scMgr = iterSceneManager.getNext();

		std::vector<std::string>::iterator iterMovableType = allAvailableTypes.begin();
		std::vector<std::string>::iterator iterMovableTypeEnd = allAvailableTypes.end();
		for(;iterMovableType!=iterMovableTypeEnd;iterMovableType++)
		{
			Ogre::SceneManager::MovableObjectIterator iterMovable = scMgr->getMovableObjectIterator(*iterMovableType);
			for(;iterMovable.hasMoreElements();)
			{
				Ogre::MovableObject * movable = iterMovable.getNext();
				movable->visitRenderables(&lRenderableVisitor,false);
			}
		}
	}

	// 3 / visit overlays!
	{
		Ogre::OverlayManager::OverlayMapIterator iterOverlay = Ogre::OverlayManager::getSingleton().getOverlayIterator();
		for(;iterOverlay.hasMoreElements();)
		{
			Ogre::Overlay* lOverlay = iterOverlay.getNext();
			// get the first level of OverlayContainer in the Overlay
			Ogre::Overlay::Overlay2DElementsIterator iterOverlayElem = lOverlay->get2DElementsIterator();
			for(;iterOverlayElem.hasMoreElements();)
			{
				Ogre::OverlayContainer * lOverlayCont = iterOverlayElem.getNext();
				visitRecursivelyRenderablesFrom(lOverlayCont,lRenderableVisitor, false);
			}
		}
	}
}

//-------------------------------------------------------------------------------
bool CSceneManagerEditor::update(float timePassed)
{
    if(mShadowsEnabled->get())
    {
        Ogre::SceneManager::MovableObjectIterator mit = mHandle->getMovableObjectIterator("Light");
        if(!(mit.hasMoreElements()))
            mShadowsEnabled->set(false);
    }

    if(mHandle)
        mAmbient->set(mHandle->getAmbientLight());

    return false;
}

void MainWindow::updateOGRE()
{
	QMutexLocker locker(&mutex);
	static bool updateGUI=true;


	Ogre::Root* mRoot = Ogre::Root::getSingletonPtr();
	mRoot->_fireFrameStarted();

	// loop through ogre widgets and update animation
	QList<OgreWidget*> rendlist = this->findChildren<OgreWidget*>();
	foreach (OgreWidget* w, rendlist)
	{

		// update animation for OgreWidget's sceneManager
		if (w->mRenderWindow && w->updatesEnabled())
		{
			// update OgreWidget
			w->update();
			//emit w->paintEvent(new QPaintEvent(w->rect()));
			for (Ogre::SceneManager::MovableObjectIterator mit = w->getSceneManager()->getMovableObjectIterator("Entity");
				mit.hasMoreElements(); mit.moveNext() )
			{
				Ogre::Entity *entity = static_cast<Ogre::Entity*>(mit.peekNextValue());
				if (updateGUI) {
					updateGUI = false;

				}
				// check has skeleton to avoid crash for non animable entities
				if (entity->hasSkeleton())
				{
					for (Ogre::AnimationStateIterator animIt = entity->getAllAnimationStates()->getAnimationStateIterator();
						animIt.hasMoreElements(); animIt.moveNext() )
					{
						Ogre::AnimationState *animState = animIt.peekNextValue();
						if ( animState->getEnabled() )
						{
							//std::cout << entity->getName() << " ZZZZZZZZZZZ " << animState->getAnimationName();
							animState->addTime(w->getRenderWindow()->getBestFPS()/10000);
						}
					}
				}
			}
		}
	}
	mRoot->_fireFrameRenderingQueued();
	mRoot->_fireFrameEnded();
}

	void RttManager::CDepthReflectionListener::preRenderTargetUpdate(const Ogre::RenderTargetEvent& evt)
    {
		Hydrax *mHydrax = mRttManager->mHydrax;

		mHydrax->getMesh()->getEntity()->setVisible(false);

        Ogre::SceneManager::MovableObjectIterator EntityIterator = 
			mHydrax->getSceneManager()->getMovableObjectIterator("Entity");
        Ogre::Entity* CurrentEntity;
		unsigned int k;

        mMaterials.empty();

        while (EntityIterator.hasMoreElements())
        {
            CurrentEntity = static_cast<Ogre::Entity*>(EntityIterator.peekNextValue());

			for(k = 0; k < CurrentEntity->getNumSubEntities(); k++)
			{
				mMaterials.push(CurrentEntity->getSubEntity(k)->getMaterialName());

			    CurrentEntity->getSubEntity(k)->setMaterialName(mHydrax->getMaterialManager()->getMaterial(MaterialManager::MAT_DEPTH)->getName());
			}

            EntityIterator.moveNext();
        }

        mRttManager->mPlanes[RTT_DEPTH_REFLECTION]->getParentNode()->translate(0,-mHydrax->getPlanesError(),0);
		
        bool IsInUnderwaterError = false;

		if (mHydrax->getCamera()->getDerivedPosition().y > mRttManager->mPlanes[RTT_DEPTH_REFLECTION]->getParentNode()->getPosition().y)
		{
			mCameraPlaneDiff = 0;
			IsInUnderwaterError = true;
		}
		else
		{
			mCameraPlaneDiff = 0;
		}

        mHydrax->getCamera()->enableReflection(mRttManager->mPlanes[RTT_DEPTH_REFLECTION]);

		if (!IsInUnderwaterError)
		{
            mHydrax->getCamera()->enableCustomNearClipPlane(mRttManager->mPlanes[RTT_DEPTH_REFLECTION]);
		}
    }

void
	Player::stopAnimation(std::string anim)
{
	Ogre::SceneManager::MovableObjectIterator iterator = SceneManager()->getMovableObjectIterator("Entity");
	while(iterator.hasMoreElements())
	{
		Ogre::Entity* e = static_cast<Ogre::Entity*>(iterator.getNext());

		if (e->hasSkeleton())
		{
			Ogre::AnimationState *animation = e->getAnimationState(anim);
			animation->setEnabled(false);
			animation->setTimePosition(0);
		}
	}
}

MapCameraLightningInstance::MapCameraLightningInstance(MapCameraLightning& lightning)
: mLightning(lightning)
{

	Ogre::SceneManager::MovableObjectIterator iterator = lightning.getSceneManager().getMovableObjectIterator(Ogre::LightFactory::FACTORY_TYPE_NAME);

	while (iterator.hasMoreElements()) {
		Ogre::MovableObject* light = iterator.getNext();
		if (light && light != mLightning.getLight()) {
			if (light->getVisible()) {
				mVisibleLights.push_back(light);
				light->setVisible(false);
			}
		}
	}
	mLightning.getLight()->setVisible(true);
	mAmbientColour = mLightning.getSceneManager().getAmbientLight();
	mLightning.getSceneManager().setAmbientLight(mLightning.getLight()->getDiffuseColour());
}

// Manage physics from this loop
// Please don't alter the Ogre scene manager directly. Instead use the designated methods (setPositionX, setPositionY, setPositionZ, setRoll, setPitch, setYaw, animate)
void loop(Ogre::SceneManager* smgr){
	int dir = 1;
	int timeStep = 10;
	while(true){
		// If the message array has any elements, the render loop is applying changes from physics loop
		// If so, abort this timestep
		if((*::message).size() == 1){
			continue;
		}
		Sleep(timeStep);
		Ogre::SceneManager::MovableObjectIterator iterator = smgr->getMovableObjectIterator("Entity");
		while(iterator.hasMoreElements()){
			// If the message array has any elements, the render loop is applying changes from physics loop
			// If so, abort this timestep
			if((*::message).size() == 1){
				continue;
			}
			Ogre::Entity* entity = static_cast<Ogre::Entity*>(iterator.getNext());

			// <>< <>< Make the cute fishy swim <>< <><
			// This only moves fish
			if(entity->hasAnimationState("swim")){
			
				Ogre::SceneNode* sceneNode = entity->getParentSceneNode();

				// Update position
				Ogre::Vector3 pos = sceneNode->getPosition();
				if(pos.x > 120){
					dir = -1;
					setYaw(entity, 180);
				}
				if(pos.x < -120){
					dir = 1;
					setYaw(entity, 180);
				}
				setPositionX(entity, sceneNode->getPosition().x + dir);
				animate(entity, "swim");
			}

		}
	}
}

  void GodRaysManager::DepthMapListener::postRenderTargetUpdate(const Ogre::RenderTargetEvent& evt)
  {
    Ogre::SceneManager::MovableObjectIterator EntityIterator = mGodRaysManager->mHydrax->getSceneManager()->getMovableObjectIterator("Entity");
    Ogre::Entity * CurrentEntity = NULL;
    unsigned int k = 0;
    mGodRaysManager->mHydrax->getMesh()->getEntity()->setVisible(true);

    while(EntityIterator.hasMoreElements())
    {
      CurrentEntity = static_cast<Ogre::Entity *>(EntityIterator.peekNextValue());

      for(k = 0; k < CurrentEntity->getNumSubEntities(); k++)
      {
        CurrentEntity->getSubEntity(k)->setMaterialName(mMaterials.front());
        mMaterials.pop();
      }

      EntityIterator.moveNext();
    }
  }

void ReflectionTextureListener::preRenderTargetUpdate(const RenderTargetEvent& evt)
{
    // Hide plane and objects below the water
    mWater->setVisible(false);


	/*list<Ogre::Entity*> entList = Level::getSingleton()->getEntityList();
	list<Ogre::Entity*>::iterator it;
	for (it = entList.begin();it != entList.end();it++){
		if ((*it)->isVisible()){
			Ogre::AxisAlignedBox box = (*it)->getWorldBoundingBox();
			if (box.getMinimum().y < mWater->getSceneNode()->_getDerivedPosition().y){
				(*it)->setVisible(false);
				belowWaterEnts.push_back((*it));
			}
		}
	}*/

    /*std::vector<Entity*>::iterator i, iend;
    iend = belowWaterEnts.end();
    for (i = belowWaterEnts.begin(); i != iend; ++i)
    {
        (*i)->setVisible(false);
    }*/

	Ogre::SceneManager::MovableObjectIterator it = Level::getSingleton()->getSceneManager()->getMovableObjectIterator("Entity");
	while(it.hasMoreElements()){
		Ogre::MovableObject *m = it.getNext();	
		if (m->isVisible() && m->getParentSceneNode()->_getDerivedPosition().y < mWater->getSceneNode()->_getDerivedPosition().y){
			m->setVisible(false);
			belowWaterEnts.push_back(m);
		}
	}


	Ogre::Camera* cam = Level::getSingleton()->getCurrentSegment()->getActiveCamera()->getCamera();
	cam->enableReflection(mWater->getReflectionPlane());

}

void OgreInfo::diagnose(std::ostream& outputStream)
{
	Ogre::SceneManagerEnumerator::SceneManagerIterator sceneManagerI = Ogre::Root::getSingleton().getSceneManagerIterator();
	while (sceneManagerI.hasMoreElements()) {
		Ogre::SceneManager* sceneManager = sceneManagerI.getNext();
		outputStream << "Scenemanager(" << sceneManager->getTypeName() << ") " << sceneManager->getName() << std::endl;
		outputStream << " Number of scene nodes: " << countNodes(sceneManager->getRootSceneNode()) << std::endl;
		outputStream << " Movable objects:" << std::endl;
		unsigned int movableObjectCounter = 0;
		Ogre::Root::MovableObjectFactoryIterator movableObjectFactoryI = Ogre::Root::getSingleton().getMovableObjectFactoryIterator();
		while (movableObjectFactoryI.hasMoreElements()) {
			Ogre::MovableObjectFactory* factory = movableObjectFactoryI.getNext();
			std::string type(factory->getType());
			{
				Ogre::SceneManager::MovableObjectIterator I = sceneManager->getMovableObjectIterator(type);
				while (I.hasMoreElements()) {
					movableObjectCounter++;
					Ogre::MovableObject* movable = I.getNext();
					if (movable->getMovableType() == "Light") {
						Ogre::Light* light = static_cast<Ogre::Light*> (movable);
						outputStream << "  * Light " << light->getName() << "(" << (light->isInScene() ? "in scene" : "not in scene") << ")" << std::endl;
						outputStream << "   Pos: " << light->getDerivedPosition() << std::endl;
						outputStream << "   Direction: " << light->getDerivedDirection() << std::endl;

					} else {
						std::stringstream ssPosAndOrientation;
						if (movable->getParentSceneNode() && movable->isInScene()) {
							ssPosAndOrientation << " pos: " << movable->getParentSceneNode()->getPosition() << " orientation: " << movable->getParentSceneNode()->getOrientation();
						}
						outputStream << "  * " << type << " " << movable->getName() << "(" << (movable->isInScene() ? "in scene" : "not in scene") << ")" << ssPosAndOrientation.str() << std::endl;
						//					outputStream << "  Pos: " << light->getDerivedPosition() << std::endl;
						//					outputStream << "  Direction: " << light->getDerivedDirection() << std::endl;
					}
				}
			}
		}

		outputStream << " Number of movable objects: " << movableObjectCounter << std::endl;

		outputStream << " Cameras:" << std::endl;
		{
			Ogre::SceneManager::CameraIterator I = sceneManager->getCameraIterator();
			while (I.hasMoreElements()) {
				Ogre::Camera* camera = I.getNext();
				outputStream << "  Camera " << camera->getName() << "(" << (camera->isInScene() ? "in scene" : "not in scene") << ")" << std::endl;
				outputStream << "  Pos: " << camera->getDerivedPosition() << std::endl;
				outputStream << "  Direction: " << camera->getDerivedDirection() << std::endl;
				outputStream << "  Clip distances: " << camera->getNearClipDistance() << " - " << camera->getFarClipDistance() << std::endl;
			}
		}

	}

	size_t resourceMemoryUsage = 0;
	outputStream << "Resource Managers:" << std::endl;
	Ogre::ResourceGroupManager::ResourceManagerIterator I = Ogre::ResourceGroupManager::getSingleton().getResourceManagerIterator();
	while (I.hasMoreElements()) {
		std::string name = I.peekNextKey();
		Ogre::ResourceManager* manager = I.getNext();
		outputStream << " Resource Manager: " << name << std::endl;
		if (manager->getMemoryBudget() == std::numeric_limits<size_t>::max()) {
			outputStream << "  Memory budget: not set" << std::endl;
		} else {
			outputStream << "  Memory budget: " << manager->getMemoryBudget() << " bytes" << std::endl;
		}
		outputStream << "  Memory usage:  " << manager->getMemoryUsage() << " bytes" << std::endl;
		resourceMemoryUsage += manager->getMemoryUsage();

		Ogre::ResourceManager::ResourceMapIterator resourceI = manager->getResourceIterator();
		if (resourceI.hasMoreElements()) {
			outputStream << "  Resources: " << std::endl;
			int resourceCount = 0;
			int loadedResourceCount = 0;
			while (resourceI.hasMoreElements()) {
				Ogre::ResourcePtr resource = resourceI.getNext();
				if (resource->isLoaded()) {
					std::string reloadable = resource->isReloadable() ? " reloadable" : "";
					outputStream << "   " << resource->getName() << " ( " << resource->getSize() << " bytes)" << reloadable;
					Ogre::Texture* texture = dynamic_cast<Ogre::Texture*>(resource.get());
					if (texture) {
						outputStream << texture->getWidth() << "x" << texture->getHeight() << " ";
					}
					outputStream << std::endl;
					loadedResourceCount++;
				}
				resourceCount++;
			}
			outputStream << "  Total number of resources: " << resourceCount << std::endl;
			outputStream << "  Number of loaded resources: " << loadedResourceCount << std::endl;
		}
	}

	outputStream << "Total memory usage for all resource manager: " << resourceMemoryUsage << " bytes" << std::endl;

	outputStream << std::flush;
}

    bool MiniMapMaker::outputTextures(void)
    {
        // 如果需要（纹理大小改变了或第一次输出文件时），就重建render texture
        if (mNeedRecreate)
        {
            destroy();
            init();
        }

        mTempOutputFileNames.clear();

        static const String TEMP_GROUP_NAME = "#TEMP#";

        // 创建临时的资源组
        Ogre::ResourceGroupManager& rgm = Ogre::ResourceGroupManager::getSingleton();
        rgm.addResourceLocation(mPath, "FileSystem", TEMP_GROUP_NAME, false);

        // 合并所有物体的包围盒
        Ogre::AxisAlignedBox aabb;
        Ogre::SceneManager::MovableObjectIterator itm =
            mManipulator->getSceneManager()->getMovableObjectIterator(Ogre::EntityFactory::FACTORY_TYPE_NAME);
        while (itm.hasMoreElements())
        {
            Ogre::MovableObject* movable = itm.getNext();
            aabb.merge(movable->getWorldBoundingBox(true));
        }

        mCamera->setFarClipDistance(mCamera->getNearClipDistance() + 2 * (aabb.getMaximum().y - aabb.getMinimum().y ));
        mCamera->setNearClipDistance(mTileSize/2);

        // 设置摄像机的高度
        Real yPos = mCamera->getNearClipDistance() + aabb.getMaximum().y;
        
        TerrainData* terrainData = mManipulator->getTerrainData();
        assert (terrainData);

        float terrainHeight = terrainData->mMaxZ - terrainData->mMinZ;
        float terrainWidth = terrainData->mMaxX - terrainData->mMinX;

        // 投影的真正面积
        Real projectSize = 0.0f;

        // 最终切割成小块纹理的块数
        int xIndex = 0;
        int zIndex = 0;

        Ogre::Vector3 originPoint(Ogre::Vector3::ZERO);

        if (mUseRealCameraAngle)
        {
            float outerSquareWidth = 0.0f;
            float outerSquareHeight = 0.0f;

            Ogre::Radian alphaAngle = Ogre::Math::ATan( Ogre::Math::Abs(mMoveZDir.z / mMoveZDir.x) );

            switch (mCameraDirQuadrant)
            {
            case WestNorth :
                {
                    float leftWidth = Ogre::Math::Sin(alphaAngle) * terrainHeight;
                    float rightWidth = Ogre::Math::Cos(alphaAngle) * terrainWidth;
                    outerSquareWidth = leftWidth + rightWidth;

                    float topHeight = Ogre::Math::Cos(alphaAngle) * terrainHeight;
                    float bottomHeight = Ogre::Math::Sin(alphaAngle) * terrainWidth;

                    outerSquareHeight = topHeight + bottomHeight;

                    originPoint = Ogre::Vector3(terrainData->mMinX,0,terrainData->mMinZ) +
                        (-mMoveZDir * leftWidth);

                    float projectOffset = yPos / Ogre::Math::Tan(mCamDirAngle);

                    originPoint.x += (mInvertCameraDir * projectOffset ).x;
                    originPoint.z += (mInvertCameraDir * projectOffset ).z;

                    break;
                }
            case EastNorth :
                {
                    float leftWidth = Ogre::Math::Cos(alphaAngle) * terrainWidth;
                    float rightWidth = Ogre::Math::Sin(alphaAngle) * terrainHeight;
                    outerSquareWidth = leftWidth + rightWidth;

                    float topHeight = Ogre::Math::Cos(alphaAngle) * terrainHeight;
                    float bottomHeight = Ogre::Math::Sin(alphaAngle) * terrainWidth;

                    outerSquareHeight = topHeight + bottomHeight;

                    originPoint = Ogre::Vector3(terrainData->mMaxX,0,terrainData->mMinZ) +
                        (-mMoveZDir * leftWidth);

                    float projectOffset = yPos / Ogre::Math::Tan(mCamDirAngle);

                    originPoint.x += (mInvertCameraDir * projectOffset ).x;
                    originPoint.z += (mInvertCameraDir * projectOffset ).z;

                    break;
                }
            case EastSouth :
//.........这里部分代码省略.........

void ImpostorTexture::renderTextures(bool force)
{
#ifdef IMPOSTOR_FILE_SAVE
	TexturePtr renderTexture;
#else
	TexturePtr renderTexture(texture);
	//if we're not using a file image we need to set up a resource loader, so that the texture is regenerated if it's ever unloaded (such as switching between fullscreen and the desktop in win32)
	loader = std::auto_ptr<ImpostorTextureResourceLoader>(new ImpostorTextureResourceLoader(*this));
#endif
	RenderTexture *renderTarget;
	Camera *renderCamera;
	Viewport *renderViewport;
	SceneNode *camNode;

	//Set up RTT texture
	uint32 textureSize = ImpostorPage::impostorResolution;
	if (renderTexture.isNull()) {
	renderTexture = TextureManager::getSingleton().createManual(getUniqueID("ImpostorTexture"), "Impostors",
				TEX_TYPE_2D, textureSize * IMPOSTOR_YAW_ANGLES, textureSize * IMPOSTOR_PITCH_ANGLES, 0, PF_A8R8G8B8, TU_RENDERTARGET, loader.get());
	}
	renderTexture->setNumMipmaps(MIP_UNLIMITED);
	
	//Set up render target
	renderTarget = renderTexture->getBuffer()->getRenderTarget(); 
	renderTarget->setAutoUpdated(false);
	
	//Set up camera
	camNode = sceneMgr->getSceneNode("ImpostorPage::cameraNode");
	renderCamera = sceneMgr->createCamera(getUniqueID("ImpostorCam"));
	camNode->attachObject(renderCamera);
	renderCamera->setLodBias(1000.0f);
	renderViewport = renderTarget->addViewport(renderCamera);
	renderViewport->setOverlaysEnabled(false);
	renderViewport->setClearEveryFrame(true);
	renderViewport->setShadowsEnabled(false);
	renderViewport->setBackgroundColour(ImpostorPage::impostorBackgroundColor);
	
	//Set up scene node
	SceneNode* node = sceneMgr->getSceneNode("ImpostorPage::renderNode");
	
	Ogre::SceneNode* oldSceneNode = entity->getParentSceneNode();
	if (oldSceneNode) {
		oldSceneNode->detachObject(entity);
	}
	node->attachObject(entity);
	node->setPosition(-entityCenter);
	
	//Set up camera FOV
	const Real objDist = entityRadius * 100;
	const Real nearDist = objDist - (entityRadius + 1); 
	const Real farDist = objDist + (entityRadius + 1);
	
	renderCamera->setAspectRatio(1.0f);
	renderCamera->setFOVy(Math::ATan(entityDiameter / objDist));
	renderCamera->setNearClipDistance(nearDist);
	renderCamera->setFarClipDistance(farDist);
	
	//Disable mipmapping (without this, masked textures look bad)
	MaterialManager *mm = MaterialManager::getSingletonPtr();
	FilterOptions oldMinFilter = mm->getDefaultTextureFiltering(FT_MIN);
	FilterOptions oldMagFilter = mm->getDefaultTextureFiltering(FT_MAG);
	FilterOptions oldMipFilter = mm->getDefaultTextureFiltering(FT_MIP);
	mm->setDefaultTextureFiltering(FO_POINT, FO_LINEAR, FO_NONE);

	//Disable fog
	FogMode oldFogMode = sceneMgr->getFogMode();
	ColourValue oldFogColor = sceneMgr->getFogColour();
	Real oldFogDensity = sceneMgr->getFogDensity();
	Real oldFogStart = sceneMgr->getFogStart();
	Real oldFogEnd = sceneMgr->getFogEnd();
	sceneMgr->setFog(Ogre::FOG_EXP2, Ogre::ColourValue(0,0,0,0), 0.0f, 0.0f, 0.0f); //Ember change
	
	//We need to disable all lightning and render it full bright
	Ogre::ColourValue oldAmbientColour = sceneMgr->getAmbientLight();
	sceneMgr->setAmbientLight(ColourValue::White);

	std::vector<Ogre::MovableObject*> lightStore;
	Ogre::SceneManager::MovableObjectIterator lightIterator = sceneMgr->getMovableObjectIterator(Ogre::LightFactory::FACTORY_TYPE_NAME);
	while (lightIterator.hasMoreElements()) {
		Ogre::MovableObject* light = lightIterator.getNext();
		if (light) {
			if (light->getVisible()) {
				lightStore.push_back(light);
				light->setVisible(false);
			}
		}
	}

	// Get current status of the queue mode
	Ogre::SceneManager::SpecialCaseRenderQueueMode OldSpecialCaseRenderQueueMode = sceneMgr->getSpecialCaseRenderQueueMode();
	//Only render the entity
	sceneMgr->setSpecialCaseRenderQueueMode(Ogre::SceneManager::SCRQM_INCLUDE); 
	sceneMgr->addSpecialCaseRenderQueue(group->geom->getRenderQueue() + 1);

	uint8 oldRenderQueueGroup = entity->getRenderQueueGroup();
	entity->setRenderQueueGroup(group->geom->getRenderQueue() + 1);
	bool oldVisible = entity->getVisible();
	entity->setVisible(true);
	float oldMaxDistance = entity->getRenderingDistance();
	entity->setRenderingDistance(0);
//.........这里部分代码省略.........