source: trunk/VUT/OcclusionCullingSceneManager/src/OgreOcclusionCullingSceneManager.cpp @ 12

#include "OgreOcclusionCullingSceneManager.h"
#include "OgreMath.h"
#include "OgreIteratorWrappers.h"

namespace Ogre {
        
        //-----------------------------------------------------------------------
        OcclusionCullingSceneManager::OcclusionCullingSceneManager(): 
        mFrameID(1)
        {
        }

        //-----------------------------------------------------------------------
        void OcclusionCullingSceneManager::_renderVisibleObjects(void)
        {
                SceneManager::_renderVisibleObjects();
                //mDistanceQueue.push(mSceneRoot);
                //Preprocess();

                renderCullFrustum();

                //mFrameID ++;
                //ResetQueries();
        }

        //-----------------------------------------------------------------------
        void OcclusionCullingSceneManager::renderCullFrustum()
        {
                //RenderQueue::QueueGroupIterator queueIt = getRenderQueue()->_getQueueGroupIterator();

                 //while (queueIt.hasMoreElements())
                if(! mDistanceQueue.empty())
                {
                        SceneNode *node = mDistanceQueue.top();
                        mDistanceQueue.pop();

                         //walkTree(

                }
                         /*
                        HierarchyNode *node = mDistanceQueue.top();
                        mDistanceQueue.pop();
        
                        // interesting for the visualization, so rest and set
                        node->SetVisible(false);
                        
                        // We don't need to know about near plane intersection 
                        // for frustum culling only, but we have to pass a parameter
                        bool intersectsNearplane;
                        if(InsideViewFrustum(node, intersectsNearplane))
                        {
                                // update node's visited flag => needed for rendering
                                // so set it also here
                                node->SetLastVisited(mFrameID);
                                node->SetVisible(true);
                                TraverseNode(node);
                        }
                }*/
        }

        //-----------------------------------------------------------------------
        void OcclusionCullingSceneManager::walkTree(SceneNode *node)
        {
                if(node->numChildren() > 0)
                {
                        //node->Render();
                }
                else // internal node: add children to priority queue for further processing
                {
                        Node::ChildNodeIterator it = node->getChildIterator();
                
                        while (it.hasMoreElements())
                        {
                                SceneNode* sceneChild = static_cast<SceneNode*>(it.getNext());
                                //getRenderQueue()->addRenderable(sceneChild);
                mDistanceQueue.push(sceneChild);
                        }
                }
        }
}