C++ Camera::setFOVy方法代码示例

//-------------------------------------------------------------------------------------------
void MagickWidget::loadMesh(Ogre::MeshPtr pMesh)
{
    QString directory(OgitorsRoot::getSingletonPtr()->GetProjectOptions()->ProjectDir.c_str());
    if(directory.isEmpty())
        directory = "./";

    QDir(directory).mkpath("entitycache");

    Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().createManual( "MeshMagickTex", 
                   Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D, 
                   512, 512, 0, Ogre::PF_R8G8B8A8 , Ogre::TU_RENDERTARGET );

    Ogre::RenderTexture *rttTex = texture->getBuffer()->getRenderTarget();
    Ogre::SceneManager *mSceneMgr = Ogre::Root::getSingletonPtr()->createSceneManager("OctreeSceneManager", "MeshMagickTexMgr");

    Ogre::Light *dirl = mSceneMgr->createLight("DisplayLight");
    dirl->setDirection(-1,-1,-1);
    dirl->setDiffuseColour(1,1,1);
    dirl->setType(Ogre::Light::LT_DIRECTIONAL);

    Ogre::Camera* RTTCam = mSceneMgr->createCamera("MeshMagickCam");
    RTTCam->setNearClipDistance(0.01F);
    RTTCam->setFarClipDistance(0);
    RTTCam->setAspectRatio(1);
    RTTCam->setFOVy(Ogre::Degree(90));
    RTTCam->setPosition(0,0,1);
    RTTCam->lookAt(0,0,0);

    Ogre::Viewport *v = rttTex->addViewport( RTTCam );
    v->setClearEveryFrame( true );
    v->setBackgroundColour(Ogre::ColourValue(0,0,0));

    Ogre::Entity *mEntity;

    mEntity = mSceneMgr->createEntity("scbDisplay", pMesh->getName());
    mSceneMgr->getRootSceneNode()->attachObject(mEntity);

    Ogre::Vector3 vSize = mEntity->getBoundingBox().getHalfSize();
    Ogre::Vector3 vCenter = mEntity->getBoundingBox().getCenter(); 
    
    vSize += Ogre::Vector3(vSize.z, vSize.z, vSize.z);

    float maxsize = std::max(std::max(vSize.x,vSize.y),vSize.z);
    
    vSize = Ogre::Vector3(0, 0, maxsize * 1.15f) + vCenter;
    
    RTTCam->setPosition(vSize.x,vSize.y,vSize.z);
    RTTCam->lookAt(vCenter.x,vCenter.y,vCenter.z);

    rttTex->update();
    Ogre::String imagefile = OgitorsUtils::QualifyPath(directory.toStdString() + "/entitycache/meshmagick.png");
    rttTex->writeContentsToFile(imagefile);

    mEntity->detachFromParent();
    mSceneMgr->destroyEntity(mEntity);
    rttTex->removeAllViewports();
    Ogre::Root::getSingletonPtr()->destroySceneManager(mSceneMgr);
    mDisplayWidget->setImage(QString(imagefile.c_str()));
}

void AssetLoader::createCamera(Ogre::SceneManager* sceneMgr, const aiScene* scene, Ogre::String camName)
{
	for (size_t n = 0; n < scene->mNumCameras; n++)
	{
		// カメラを作成
		Ogre::Camera* cam = sceneMgr->createCamera(scene->mCameras[n]->mName.data);
		std::cout << "Create Camra " << cam->getName() << " " << scene->mCameras[n]->mHorizontalFOV << std::endl;
		cam->setFOVy(Ogre::Radian(scene->mCameras[n]->mHorizontalFOV));
		
		// 視点アニメーション用ノード
		Ogre::SceneNode* camNode = sceneMgr->getRootSceneNode()->createChildSceneNode(cam->getName()+"CamNode");
		camNode->attachObject(cam);

		// アニメーションを走査
		for (size_t na = 0; na < scene->mNumAnimations; na++) {
			aiAnimation* aiani = scene->mAnimations[na];
			for (size_t nc = 0; nc < aiani->mNumChannels; nc++) {
				// カメラと同じ名前のチャネルを取得する
				if (Ogre::String(scene->mCameras[n]->mName.data) == cam->getName()) {
					
					//アニメーションを付けるトラックを作成しておく
					Ogre::Animation* ogani = sceneMgr->createAnimation(cam->getName()+"Animation", aiani->mDuration);
					std::cout << "Animation : " << ogani->getName() << std::endl; 
					Ogre::NodeAnimationTrack* track = ogani->createNodeTrack(0, camNode);
					ogani->setInterpolationMode(Ogre::Animation::IM_LINEAR);

					// アニメーションチャネルからキーフレームアニメーションを取得
					aiNodeAnim* chan = aiani->mChannels[n];
					for (size_t np = 0; np < chan->mNumPositionKeys; np++) {						
						aiVectorKey* vk = &(chan->mPositionKeys[np]);
						Ogre::TransformKeyFrame* key = track->createNodeKeyFrame(vk->mTime);
						key->setTranslate(Ogre::Vector3(vk->mValue[0], vk->mValue[1], vk->mValue[2]));

						aiQuatKey* qk = &(chan->mRotationKeys[np]);
						key->setRotation(Ogre::Quaternion(qk->mValue.w, qk->mValue.x, qk->mValue.y, qk->mValue.z));
					}

					// 管理するアニメーションの名前を付けておく
					Ogre::AnimationState* aniState = sceneMgr->createAnimationState(ogani->getName());
					aniState->setEnabled(true);
					aniState->setLoop(true);
					aniState->setTimePosition(0.0);

					//ループを抜ける
					na = scene->mNumAnimations;
					break;
				}
			}
		}
	}
}

void
    CinematicManager::createOrthoCamera(Ogre::Real windowW, Ogre::Real windowH, const Ogre::Vector3 &initialPos,
    const Ogre::Quaternion &initialOrient, Control* control)
{
    Ogre::Camera* cam = _scnMgr->createCamera(ORTHO_CAM_NAME + Ogre::StringConverter::toString(_camCurId));
    cam->setProjectionType(Ogre::PT_ORTHOGRAPHIC);
    cam->setOrthoWindow(100, 50);
    cam->setNearClipDistance(1);
    cam->setPosition(0.0f, 0.0f,  0.0f);
    //cam->setFarClipDistance(100.0f);
    cam->setFOVy(Ogre::Radian(Ogre::Math::PI / 2.0f));
    Ogre::SceneNode* defaultNode = _scnMgr->createSceneNode();
    defaultNode->setPosition(initialPos);
    defaultNode->setOrientation(initialOrient);
    defaultNode->attachObject(cam);
    _camsVec.push_back(new ZCameraInfo(_camsVec.size(), "ORTHOGRAPHIC", cam->getName(), control, cam));
}

//----------------------------------------------------------------------------------------
ImageConverter::ImageConverter(const size_t& width/*=128*/, const size_t& height/*=128*/)
{
    mWidth = width;
    mHeight = height;

    mResourceManager = Ogre::ResourceGroupManager::getSingletonPtr();
    mResourceManager->createResourceGroup("QTImageConverter");
    mResourceManager->initialiseResourceGroup("QTImageConverter");
    
    mSceneMgrPtr = Ogre::Root::getSingletonPtr()->createSceneManager("OctreeSceneManager", "QTImageConverterSceneManager");
    mSceneMgrPtr->setAmbientLight(Ogre::ColourValue(1, 1, 1));

    Ogre::TexturePtr rendertexture = Ogre::TextureManager::getSingleton().createManual("RenderTex", 
                   "QTImageConverter", Ogre::TEX_TYPE_2D, 
                   mWidth, mHeight, 1, Ogre::PF_R8G8B8, Ogre::TU_RENDERTARGET);

    mRttTex = rendertexture->getBuffer()->getRenderTarget();

    // create our plane to set a texture to
    Ogre::Plane plane(Ogre::Vector3::UNIT_Z, 0);
    Ogre::MeshManager::getSingleton().createPlane("terrain", "QTImageConverter",
        plane, 100, 100, 1, 1, true, 1, 1, 1, Ogre::Vector3::UNIT_Y);

    // attach the plane to the scene manager and rotate it so the camera can see it
    mEntityTerrain = mSceneMgrPtr->createEntity("terrainEntity", "terrain");
    Ogre::SceneNode* node = mSceneMgrPtr->getRootSceneNode()->createChildSceneNode();
    node->attachObject(mEntityTerrain);
    mEntityTerrain->setCastShadows(false);    
    
    Ogre::Camera* RTTCam = mSceneMgrPtr->createCamera("QTImageConverterCam");
    RTTCam->setNearClipDistance(0.01F);
    RTTCam->setFarClipDistance(0);
    RTTCam->setAspectRatio(1);
    RTTCam->setFOVy(Ogre::Degree(90));
    RTTCam->setPosition(0, 0, 50);
    RTTCam->lookAt(0, 0, 0);
    
    Ogre::Viewport *v = mRttTex->addViewport(RTTCam);
    v->setBackgroundColour(Ogre::ColourValue(1, 1, 1));
    v->setClearEveryFrame(true);
}

void
OgreCameraSystem::update(int) {
    for (EntityId entityId : m_impl->m_entities.removedEntities()) {
        Ogre::Camera* camera = m_impl->m_cameras[entityId];
        if (camera) {
            Ogre::SceneNode* sceneNode = camera->getParentSceneNode();
            sceneNode->detachObject(camera);
            m_impl->m_sceneManager->destroyCamera(camera);
        }
        m_impl->m_cameras.erase(entityId);
    }
    for (auto& value : m_impl->m_entities.addedEntities()) {
        EntityId entityId = value.first;
        OgreSceneNodeComponent* sceneNodeComponent = std::get<0>(value.second);
        OgreCameraComponent* cameraComponent = std::get<1>(value.second);
        Ogre::Camera* camera = m_impl->m_sceneManager->createCamera(
            cameraComponent->name()
        );
        camera->setAutoAspectRatio(true);
        cameraComponent->m_camera = camera;
        m_impl->m_cameras[entityId] = camera;
        sceneNodeComponent->m_sceneNode->attachObject(camera);
    }
    m_impl->m_entities.clearChanges();
    for (auto& value : m_impl->m_entities) {
        OgreCameraComponent* cameraComponent = std::get<1>(value.second);
        auto& properties = cameraComponent->m_properties;
        if (properties.hasChanges()) {
            Ogre::Camera* camera = cameraComponent->m_camera;
            // Update camera
            camera->setPolygonMode(properties.polygonMode);
            camera->setFOVy(properties.fovY);
            camera->setNearClipDistance(properties.nearClipDistance);
            camera->setFarClipDistance(properties.farClipDistance);
            // Untouch
            properties.untouch();
        }
    }
}

//.........这里部分代码省略.........
        lightCopy->setSpecularColour(light->getSpecularColour());
        lightCopy->setAttenuation(light->getAttenuationRange(), light->getAttenuationConstant(), light->getAttenuationLinear(), light->getAttenuationQuadric());
        lightCopy->setPosition(light->getPosition());
        lightCopy->setDirection(light->getDirection());
        if (lightCopy->getType() == Ogre::Light::LT_SPOTLIGHT)
            lightCopy->setSpotlightRange(light->getSpotlightInnerAngle(), light->getSpotlightOuterAngle(), light->getSpotlightFalloff());
        lightCopy->setPowerScale(light->getPowerScale());
        lightCopy->setCastShadows(light->getCastShadows());

        // create a new container for the cloned light
        OgreContainer *lightCopyContainer = new OgreContainer(lightCopy);
        lightCopy->setUserAny(Ogre::Any(lightCopyContainer));
        if (!light->getUserAny().isEmpty()) {
            OgreContainer *lightContainer = Ogre::any_cast<OgreContainer *>(light->getUserAny());
            if (lightContainer)
                QObject::connect(lightContainer, SIGNAL(sceneNodeUpdated()), lightCopyContainer, SLOT(updateLight()));
        }
        result = dynamic_cast<Ogre::MovableObject *>(lightCopy);
    } else if (typeName == "Camera") {
        // clone camera
        Ogre::Camera *camera = dynamic_cast<Ogre::Camera *>(movableObject);
        Ogre::Camera *cameraCopy = sceneManager->createCamera(name.toStdString());
        //cameraCopy->setCustomParameter(0, camera->getCustomParameter(0));
        cameraCopy->setAspectRatio(camera->getAspectRatio());
        cameraCopy->setAutoAspectRatio(camera->getAutoAspectRatio());
        //cameraCopy->setAutoTracking(...);
        cameraCopy->setCastShadows(camera->getCastsShadows());
        //cameraCopy->setCullingFrustum(camera->getCullingFrustum());
        //cameraCopy->setCustomParameter(...);
        //cameraCopy->setCustomProjectionMatrix(..);
        //cameraCopy->setCustomViewMatrix(..);
        //cameraCopy->setDebugDisplayEnabled(...);
        //cameraCopy->setDefaultQueryFlags(...);
        //cameraCopy->setDefaultVisibilityFlags(...);
        cameraCopy->setDirection(camera->getDirection());
        //cameraCopy->setFixedYawAxis(...);
        cameraCopy->setFocalLength(camera->getFocalLength());
        cameraCopy->setFOVy(camera->getFOVy());

        //Ogre::Real left;
        //Ogre::Real right;
        //Ogre::Real top;
        //Ogre::Real bottom;
        //camera->getFrustumExtents(left, right, top, bottom);
        //cameraCopy->setFrustumExtents(left, right, top, bottom);
        //cameraCopy->setFrustumOffset(camera->getFrustumOffset());
        //cameraCopy->setListener(camera->getListener());
        cameraCopy->setLodBias(camera->getLodBias());
        //cameraCopy->setLodCamera(camera->getLodCamera());
        cameraCopy->setNearClipDistance(camera->getNearClipDistance());
        cameraCopy->setFarClipDistance(camera->getFarClipDistance());
        cameraCopy->setOrientation(camera->getOrientation());
        //cameraCopy->setOrthoWindow(...);
        //cameraCopy->setOrthoWindowHeight(...);
        //cameraCopy->setOrthoWindowWidth(...);
        cameraCopy->setPolygonMode(camera->getPolygonMode());
        cameraCopy->setPolygonModeOverrideable(camera->getPolygonModeOverrideable());
        cameraCopy->setPosition(camera->getPosition());
        cameraCopy->setProjectionType(camera->getProjectionType());
        cameraCopy->setQueryFlags(camera->getQueryFlags());
        cameraCopy->setRenderingDistance(camera->getRenderingDistance());
        cameraCopy->setRenderQueueGroup(camera->getRenderQueueGroup());
        //cameraCopy->setRenderSystemData(camera->getRenderSystemData());
        cameraCopy->setUseIdentityProjection(camera->getUseIdentityProjection());
        cameraCopy->setUseIdentityView(camera->getUseIdentityView());
        //cameraCopy->setUserAny(camera->getUserAny());
        cameraCopy->setUseRenderingDistance(camera->getUseRenderingDistance());
        //cameraCopy->setUserObject(camera->getUserObject());
        cameraCopy->setVisibilityFlags(camera->getVisibilityFlags());
        cameraCopy->setVisible(camera->getVisible());
        //cameraCopy->setWindow(...);

        if (!movableObject->getUserAny().isEmpty()) {
            CameraInfo *sourceCameraInfo = Ogre::any_cast<CameraInfo *>(movableObject->getUserAny());
            if (sourceCameraInfo) {
                CameraInfo *targetCameraInfo = new CameraInfo();
                targetCameraInfo->width = sourceCameraInfo->width;
                targetCameraInfo->height = sourceCameraInfo->height;
                dynamic_cast<Ogre::MovableObject *>(cameraCopy)->setUserAny(Ogre::Any(targetCameraInfo));
            }
        }

        //// Setup connections for instances
        //SceneNode *targetSceneNode = new SceneNode(cameraCopy);
        //((Ogre::MovableObject *)cameraCopy)->setUserAny(Ogre::Any(targetSceneNode));
        //if (!((Ogre::MovableObject *)camera)->getUserAny().isEmpty()) {
        //    SceneNode *sourceSceneNode = Ogre::any_cast<SceneNode *>(((Ogre::MovableObject *)camera)->getUserAny());
        //    if (sourceSceneNode) {
        //        QObject::connect(sourceSceneNode, SIGNAL(sceneNodeUpdated()), targetSceneNode, SLOT(updateSceneNode()));
        //    }
        //}

        result = dynamic_cast<Ogre::MovableObject *>(cameraCopy);
    }

    if (!result)
        Log::error(QString("Could not clone movable object \"%1\" of type \"%2\".").arg(movableObject->getName().c_str()).arg(typeName.c_str()), "OgreTools::cloneMovableObject");

    return result;
}

Camera::Camera(Event::Lane& lane,
               GameHandle cameraHandle, 
               Ogre::SceneNode* camNode, 
               Ogre::RenderTarget* renderTarget, 
               u32 width, 
               u32 height,
               const v3& position,
               const qv4& orientation,
               GameHandle parent) :
mSubLane(lane.createSubLane()),
mCameraNode(camNode),
mRenderTarget(renderTarget),
mHandle(cameraHandle),
mNodeCreated(false),
mRenderTargetCreated(false)
{
	Ogre::SceneManager* sceneMgr = Ogre::Root::getSingleton().getSceneManager(BFG_SCENEMANAGER);
	if (mCameraNode == NULL) // Create SceneNode
	{
		if (sceneMgr->hasSceneNode(stringify(mHandle)))
		{
			mCameraNode = sceneMgr->getSceneNode(stringify(mHandle));
		}
		else
		{
			mCameraNode = sceneMgr->getRootSceneNode()->createChildSceneNode(stringify(mHandle));
			mNodeCreated = true;
		}
	}
	mCameraNode->setOrientation(toOgre(orientation));
	mCameraNode->setPosition(toOgre(position));

	v3 target = toBFG(mCameraNode->getOrientation().zAxis());
	norm(target);

	Ogre::Camera* cam;
	cam = sceneMgr->createCamera(stringify(mHandle));

	cam->setFOVy(Ogre::Degree(60.0f));
	cam->setNearClipDistance(0.1f);
	cam->setFarClipDistance(250000.0f);
	cam->lookAt(toOgre(target)*10);
	mCameraNode->attachObject(cam);

	infolog << "Camera: " << stringify(mHandle) << " created.";

	if (mRenderTarget == NULL)
	{
		// Create renderToTexture RenderTarget

		if (width == 0 || height == 0)
		{
			throw std::logic_error("Too few information to create a render target.");
		}

		cam->setAspectRatio((f32)width / (f32)height);

		Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().createManual
		(
			stringify(mHandle),
			Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
			Ogre::TEX_TYPE_2D,
			width,
			height,
			0,
			Ogre::PF_R8G8B8,
			Ogre::TU_RENDERTARGET
		);

		mRenderTarget = texture->getBuffer()->getRenderTarget();

		prepareRenderTarget();

		mRenderTarget->addViewport(cam);

		mRenderTarget->getViewport(0)->setClearEveryFrame(true);
		mRenderTarget->getViewport(0)->setBackgroundColour(Ogre::ColourValue::Black);
		mRenderTarget->getViewport(0)->setOverlaysEnabled(false);

		Ogre::MaterialPtr mat =
			Ogre::MaterialManager::getSingleton().getByName(stringify(mHandle));
		if (mat.isNull())
		{
			mat = Ogre::MaterialManager::getSingleton().create(
			    stringify(mHandle), 
			    Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
		}
		Ogre::Technique* tech = mat->getTechnique(0);
		if (!tech)
		{
			tech = mat->createTechnique();
		}
		Ogre::Pass* pass = tech->getPass(0);
		if (!pass)
		{
			pass = tech->createPass();
		}
		pass->setLightingEnabled(false);

		if (pass->getNumTextureUnitStates() > 0)
//.........这里部分代码省略.........

void RenderedTexture::renderTextures()
{
    //Set up RTT texture
    Ogre::TexturePtr renderTexture;
    if (renderTexture.isNull()) {
        renderTexture = Ogre::TextureManager::getSingleton().createManual(
            getUniqueID("RenderedEntityMaterial"), "EntityRenderer",
            Ogre::TEX_TYPE_2D, textureSize, textureSize, 0,
            Ogre::PF_A8R8G8B8, Ogre::TU_RENDERTARGET, 0);
    }
    renderTexture->setNumMipmaps(0);

    //Set up render target
    Ogre::RenderTexture* renderTarget = renderTexture->getBuffer()->getRenderTarget(); 
    renderTarget->setAutoUpdated(false);

    //Set up camera
    Ogre::SceneNode* camNode = sceneMgr->getSceneNode("EntityRenderer::cameraNode");
    Ogre::Camera* renderCamera = sceneMgr->createCamera(getUniqueID("EntityRendererCam"));
    camNode->attachObject(renderCamera);
    renderCamera->setLodBias(1000.0f);

    Ogre::Viewport* renderViewport = renderTarget->addViewport(renderCamera);
    renderViewport->setOverlaysEnabled(false);
    renderViewport->setClearEveryFrame(true);
    renderViewport->setShadowsEnabled(false);
    renderViewport->setBackgroundColour(Ogre::ColourValue(0.0f, 0.0f, 0.0f, 0.0f));

    //Set up scene node
    Ogre::SceneNode* node = sceneMgr->getSceneNode("EntityRenderer::renderNode");

    Ogre::SceneNode* oldSceneNode = entity->getParentSceneNode();
    if (oldSceneNode)
        oldSceneNode->detachObject(entity);
    node->attachObject(entity);
    node->setPosition(-entityCenter);

    //Set up camera FOV
    const Ogre::Real objDist = entityRadius * 100;
    const Ogre::Real nearDist = objDist - (entityRadius + 1); 
    const Ogre::Real farDist = objDist + (entityRadius + 1);

    renderCamera->setAspectRatio(1.0f);
    renderCamera->setFOVy(Ogre::Math::ATan(2.0 * entityRadius / objDist));
    renderCamera->setNearClipDistance(nearDist);
    renderCamera->setFarClipDistance(farDist);

    //Disable mipmapping (without this, masked textures look bad)
    Ogre::MaterialManager* mm = Ogre::MaterialManager::getSingletonPtr();
    Ogre::FilterOptions oldMinFilter = mm->getDefaultTextureFiltering(Ogre::FT_MIN);
    Ogre::FilterOptions oldMagFilter = mm->getDefaultTextureFiltering(Ogre::FT_MAG);
    Ogre::FilterOptions oldMipFilter = mm->getDefaultTextureFiltering(Ogre::FT_MIP);
    mm->setDefaultTextureFiltering(Ogre::FO_POINT, Ogre::FO_LINEAR,Ogre:: FO_NONE);

    //Disable fog
    Ogre::FogMode oldFogMode = sceneMgr->getFogMode();
    Ogre::ColourValue oldFogColor = sceneMgr->getFogColour();
    Ogre::Real oldFogDensity = sceneMgr->getFogDensity();
    Ogre::Real oldFogStart = sceneMgr->getFogStart();
    Ogre::Real oldFogEnd = sceneMgr->getFogEnd();
    sceneMgr->setFog(Ogre::FOG_NONE);

    // 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(renderQueueGroup);

    Ogre::uint8 oldRenderQueueGroup = entity->getRenderQueueGroup();
    entity->setRenderQueueGroup(renderQueueGroup);
    bool oldVisible = entity->getVisible();
    entity->setVisible(true);
    float oldMaxDistance = entity->getRenderingDistance();
    entity->setRenderingDistance(0);

    //Calculate the filename hash used to uniquely identity this render
    std::string strKey = entityKey;
    char key[32] = {0};
    Ogre::uint32 i = 0;
    for (std::string::const_iterator it = entityKey.begin(); it != entityKey.end(); ++it) {
        key[i] ^= *it;
        i = (i+1) % sizeof(key);
    }
    for (i = 0; i < sizeof(key); ++i)
        key[i] = (key[i] % 26) + 'A';

    Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
        GetUserDir().string(), "FileSystem", "BinFolder");
    std::string fileNamePNG =
        "Rendered." + std::string(key, sizeof(key)) + '.' +
        Ogre::StringConverter::toString(textureSize) + ".png";

    //Attempt to load the pre-render file if allowed
    bool needsRegen = false;
    if (!needsRegen) {
        try{
            texture = Ogre::TextureManager::getSingleton().load(
                fileNamePNG, "BinFolder", Ogre::TEX_TYPE_2D, 0);
        } catch (...) {
//.........这里部分代码省略.........

void camera_set_fovy(CoiHandle camera_handle, float angle)
{
    Ogre::Camera* camera = reinterpret_cast<Ogre::Camera*>(camera_handle);
    camera->setFOVy((Ogre::Radian)angle);
}

void camera_set_fovy(CameraHandle camera_handle, float angle)
{
    Ogre::Camera* camera = static_cast<Ogre::Camera*>(camera_handle);
    camera->setFOVy((Ogre::Radian)angle);
}

void ZoneListWidget::_createImages(ImageMap& retlist)
{
    retlist.clear();

    Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().createManual( "EntityTex",
                   Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D,
                   256, 256, 0, Ogre::PF_A8R8G8B8 , Ogre::TU_RENDERTARGET );

    Ogre::RenderTexture *rttTex = texture->getBuffer()->getRenderTarget();
    Ogre::SceneManager *mSceneMgr = Ogre::Root::getSingletonPtr()->createSceneManager("OctreeSceneManager", "EntityTexMgr");

    Ogre::Light *dirl = mSceneMgr->createLight("DisplayLight");
    dirl->setDirection(-1,-1,-1);
    dirl->setDiffuseColour(1,1,1);
    dirl->setType(Ogre::Light::LT_DIRECTIONAL);

    Ogre::Camera* RTTCam = mSceneMgr->createCamera("EntityCam");
    RTTCam->setNearClipDistance(0.01F);
    RTTCam->setFarClipDistance(0);
    RTTCam->setAspectRatio(1);
    RTTCam->setFOVy(Ogre::Degree(90));
    RTTCam->setPosition(0,0,1);
    RTTCam->lookAt(0,0,0);

    Ogre::Viewport *v = rttTex->addViewport( RTTCam );
    v->setClearEveryFrame( true );
    v->setBackgroundColour(Ogre::ColourValue(0,0,0,0));

    ModularZoneFactory* factory = dynamic_cast<ModularZoneFactory*>(OgitorsRoot::getSingletonPtr()->GetEditorObjectFactory("Modular Zone Object"));
    if(!factory)return;
    factory->loadZoneTemplates();
    ZoneInfoMap zoneTemplates = factory->getZoneTemplateMap();

    Ogre::Entity *mEntity;

    unsigned char dataptr[300 * 300 * 6];
    unsigned char *dataptr2;
    Ogre::PixelBox pb(256,256,1,Ogre::PF_A8R8G8B8, dataptr);

    EntityMap entities;
    ZoneInfoMap::iterator zi;
    for(zi=zoneTemplates.begin();zi!=zoneTemplates.end();++zi)
    {
        Ogre::String addstr = (*zi).second.mMesh;
        if(entities.find((*zi).first) == entities.end())
            entities.insert(EntityMap::value_type((*zi).first,addstr));
    }

    EntityMap::const_iterator ite = entities.begin();

    while(ite != entities.end())
    {
        Ogre::String addstr = ite->second;

        mEntity = mSceneMgr->createEntity("MZP_Preview", addstr);

        mSceneMgr->getRootSceneNode()->attachObject(mEntity);

        //TODO: It would be nice to retrieve a Preview Camera Position from
        //the .zone file
        //TODO: also render portal outlines clearly so that the user can see
        //how the zone is laid out
        Ogre::Vector3 vSize = mEntity->getBoundingBox().getCorner(Ogre::AxisAlignedBox::NEAR_RIGHT_TOP);//.getHalfSize();//============
        Ogre::Vector3 vCenter = mEntity->getBoundingBox().getCenter();

//FIXME ------ NICE PREVIEWS NEEDED - bigger

        vSize += Ogre::Vector3(vSize.z, vSize.z, vSize.z);

        float maxsize = std::max(std::max(vSize.x,vSize.y),vSize.z);

        //vSize = Ogre::Vector3(0, 0, maxsize * 1.1f) + vCenter;
        vSize = Ogre::Vector3(maxsize * 0.5f, vSize.y, maxsize * 0.5f) + vCenter;
        //vSize.x +=vSize.x/2;//Maybe test to see which is larger x/2 or z/2 and use that?
        //vSize.z +=vSize.x/2;
        //RTTCam->setProjectionType(Ogre::PT_ORTHOGRAPHIC);

        RTTCam->setPosition(vSize.x,vSize.y,vSize.z);
        RTTCam->lookAt(vCenter.x,vCenter.y,vCenter.z);

        rttTex->update();
        rttTex->copyContentsToMemory(pb, Ogre::RenderTarget::FB_FRONT);


        dataptr2 = new unsigned char[96 * 96 * 4];
        Ogre::PixelBox pb2(96,96,1,Ogre::PF_A8R8G8B8, dataptr2);
        Ogre::Image::scale(pb,pb2);

        addstr.erase(addstr.length() - 5, 5);
        retlist.insert(ImageMap::value_type((*ite).first, dataptr2));

        mEntity->detachFromParent();
        mSceneMgr->destroyEntity(mEntity);

        ite++;
    }

    rttTex->removeAllViewports();
    Ogre::Root::getSingletonPtr()->destroySceneManager(mSceneMgr);
    Ogre::TextureManager::getSingletonPtr()->unload(texture->getName());
//.........这里部分代码省略.........