C++ Camera::setLodBias方法代码示例

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.........

//.........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;
}

//Ogre::Camera::setLodBias(float)
void camera_set_lod_bias(CameraHandle handle, coiReal factor)
{
    Ogre::Camera* camera = static_cast<Ogre::Camera*>(handle);
    camera->setLodBias(factor);
}