C++ Camera::getParentSceneNode方法代码示例

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();
        }
    }
}

void WheelAnimalSceneObj::load(const std::string & filename)
{

	//Ogre::ru  * s =  Orz::OgreGraphicsManager::getSingleton().getSceneManager()->getRootSceneNode()->createChildSceneNode(Ogre::Vector3(0, 0 ,0));
	
	//导入场景资源
	_impl = BaseSceneImpl::create(_osm, filename);

	//创建总场景节点
	_senceNode = Orz::OgreGraphicsManager::getSingleton().getSceneManager()->getRootSceneNode()->createChildSceneNode();

	//创建场景
	_osm->createScene(_senceNode);
	_senceNode->setVisible(true);

	//s->setVisible(false);
	/*_impl->getCamera(SCENE_CAMERA)->setPosition(Ogre::Vector3(-98.851, 164.283, 237.886));
	_impl->getCamera(SCENE_CAMERA)->setOrientation(Ogre::Quaternion(0.999578, -0.0192806, -0.0226839));*/

	//创建摄像机的节点
	_cameraSn = OgreGraphicsManager::getSingleton().getSceneManager()->getRootSceneNode()->createChildSceneNode(); 
	
	//获取场景的摄像机
	Ogre::Camera * camera = _impl->getCamera(SCENE_CAMERA);


	//创建摄像机的节点并设置它的位置
	_cameraSn = camera->getParentSceneNode()->createChildSceneNode(Ogre::Vector3(0.f, 164.283f, 237.886f));
	
	
	//_cameraSn->setPosition(Ogre::Vector3(-98.851, 164.283, 237.886));
	//_cameraSn->setOrientation(Ogre::Quaternion(0.999578, -0.0192806, -0.0226839));
	//camera->detatchFromParent();   

	//脱离原有的节点
	camera->detachFromParent();

	//摄像机绑定在节点上
	_cameraSn->attachObject(_impl->getCamera(SCENE_CAMERA));
	
	//创建场景的中心节点
	Ogre::SceneNode * sn =  getBaseCenter()->createChildSceneNode(Ogre::Vector3(0, 100,0));

	//setAutoTracking可以让你的摄像机总是盯着你场景中的某一个节点
	//方法中第一个参数确定是否打开自动跟踪，在任何一帧渲染之前都可以重新设置它。
	//二个参数是被跟踪节点得指针，除非你第一个参数是false（这时候可以用NULL），否则你必须确定调用的时候指针指向的节点必须有效
	camera->setAutoTracking(true, sn);
//	std::cout<<_camera->getPosition()<<"!"<<_camera->getOrientation()<<std::endl;



	//获取场景管理器
	 Ogre::SceneManager * sm = Orz::OgreGraphicsManager::getSingleton().getSceneManager();

	// set up spline animation of node
	 //定义动画，指定动画的名称及长度（这里为4秒）
	_anim = sm->createAnimation("Cam_", 4);

	//// Spline it for nice curves
	// // 指定动画关键帧之间的插值方式（包括线性插值和样条插值）
	_anim->setInterpolationMode(Ogre::Animation::IM_LINEAR);

	//定义动画的一个动画轨迹，并指定这个轨迹是作用到_cameraSn节点上的
	//// Create a track to animate the camera's node
	Ogre::NodeAnimationTrack * track = _anim->createNodeTrack(0, _cameraSn);
											
	 // 定义动画轨迹包含的关键帧，下面定义了3个关键帧，加上起始帧
	// 4个关健帧形成了一个曲线的动画
	Ogre::TransformKeyFrame* key = track->createNodeKeyFrame(0); // startposition
	key->setTranslate(Ogre::Vector3(0.f, 0.3f, 237.886f));

	 key = track->createNodeKeyFrame(3); // startposition
	key->setTranslate(Ogre::Vector3(0.f, 0.3f, 237.886f));

	
	key = track->createNodeKeyFrame(4);
	key->setTranslate(Ogre::Vector3(0.f, -80.f, -400.f));

   //////////////////////////////////
	
	//定义动画的一个动画轨迹，并指定这个轨迹是作用到创建场景的中心节点sn上的
	track = _anim->createNodeTrack(1, sn);
	key = track->createNodeKeyFrame(0); // startposition
	key->setTranslate(Ogre::Vector3(0, 0,0));

	
	key = track->createNodeKeyFrame(3); // startposition
	key->setTranslate(Ogre::Vector3(0, 0,0));

	
	key = track->createNodeKeyFrame(4);
	key->setTranslate(Ogre::Vector3(0, 200,0));										  


	//// Create a new animation state to track this

	//定义AnimationState类的对象，它和刚才定义的动画类相对应。设置动画的状态为启用：
	_animState = sm->createAnimationState("Cam_");
	_animState->setEnabled(true);// 启用该动画
	_animState->setLoop(false);
//.........这里部分代码省略.........