source: trunk/VUT/OcclusionCullingSceneManager/src/OgreOcclusionCullingOctreeSceneManager.cpp @ 45

#include "OgreOcclusionCullingOctreeSceneManager.h"
#include "OgreMath.h"
#include "OgreIteratorWrappers.h"
#include "OgreRenderSystem.h"
#include "OgreCamera.h"

#include <windows.h>

namespace Ogre {
        //-----------------------------------------------------------------------
        OcclusionCullingOctreeSceneManager::OcclusionCullingOctreeSceneManager()
        {
                mOcclusionCullingOctreeSceneTraverser = 
                        new OcclusionCullingOctreeSceneTraverser(this, mDestRenderSystem);

                //mDisplayNodes = true;
                //mShowBoundingBoxes = true;
                //mShowBoxes = true;
                mMaxDepth = 20;
        }
        //-----------------------------------------------------------------------
        OcclusionCullingOctreeSceneManager::~OcclusionCullingOctreeSceneManager()
        {
                delete mOcclusionCullingOctreeSceneTraverser;
        }
        //-----------------------------------------------------------------------
        void OcclusionCullingOctreeSceneManager::_renderVisibleObjects(void)
        {
                //-- render background
                clearSpecialCaseRenderQueues();
                addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
                addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
        
                setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
                SceneManager::_renderVisibleObjects( );
                _deleteRenderedQueueGroups();

                //-- render visible objects (i.e., all but overlay)
                clearSpecialCaseRenderQueues();
                addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
                setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);

                mOcclusionCullingOctreeSceneTraverser->setSceneRoot(mOctree);
                mOcclusionCullingOctreeSceneTraverser->renderScene(mCameraInProgress);
                
                _deleteRenderedQueueGroups();

                //-- render overlay
                clearSpecialCaseRenderQueues();
                SceneManager::_renderVisibleObjects( );
        
                clearSpecialCaseRenderQueues();
        }
        //-----------------------------------------------------------------------
        void OcclusionCullingOctreeSceneManager::_findVisibleObjects(Camera* cam, bool onlyShadowCasters)
        {
                // must be empty because objects are found and rendered in an interleaved fashion
                // in _renderVisibibleObjects 
                //char *msg = "now finding visible objects\n"; OutputDebugString(msg);
        }
        //-----------------------------------------------------------------------
        void OcclusionCullingOctreeSceneManager::_updateSceneGraph(Camera* cam)
        {
                //char *msg = "now updating scenegraph\n"; OutputDebugString(msg);
                //mOcclusionCullingOctreeSceneTraverser->preprocess();

        mOcclusionCullingOctreeSceneTraverser->setNumSceneNodes((int)mSceneNodes.size());
                mOcclusionCullingOctreeSceneTraverser->setRenderSystem(mDestRenderSystem);
        
                mOcclusionCullingOctreeSceneTraverser->setNumOctreeNodes(mNumOctreeNodes);

                OctreeSceneManager::_updateSceneGraph(cam);
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingOctreeSceneManager::setOption( const String & key, const void * val )
        {
                return mOcclusionCullingOctreeSceneTraverser->setOption( key, val) || OctreeSceneManager::setOption( key, val );
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingOctreeSceneManager::getOption( const String & key, void *val )
        {
                return mOcclusionCullingOctreeSceneTraverser->getOption( key, val) || OctreeSceneManager::getOption( key, val ) ;
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingOctreeSceneManager::getOptionValues( const String & key, StringVector  &refValueList )
        {
                return OctreeSceneManager::getOptionValues( key, refValueList );
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingOctreeSceneManager::getOptionKeys( StringVector & refKeys )
        {
                return mOcclusionCullingOctreeSceneTraverser->getOptionKeys ( refKeys ) || OctreeSceneManager::getOptionKeys( refKeys );
        }
        //-----------------------------------------------------------------------
        void OcclusionCullingOctreeSceneManager::_renderOctant(Camera *cam, Octree *octant)
        {
                //Add stuff to be rendered;
        NodeList::iterator it = octant->mNodes.begin();
         
        while(it != octant->mNodes.end())
        {
            OctreeNode *sn = *it;

            mNumObjects++;

                        // check bounding box visibility of scene nodes
                        if (cam->isVisible(sn->_getWorldAABB()))
                        {
                                sn->_addToRenderQueue(cam, getRenderQueue(), false);
                                //node->_findVisibleObjects(cam, getRenderQueue(), false, mDisplayNodes, false);
                                mVisible.push_back(sn);

                                if (mDisplayNodes)
                                        getRenderQueue()->addRenderable(sn);

                                // check if the scene manager or this node wants the bounding box shown.
                                if (sn->getShowBoundingBox() || mShowBoundingBoxes)
                                        sn->_addBoundingBoxToQueue(getRenderQueue());

                                if (mShowBoxes)
                                        getRenderQueue()->addRenderable(octant->getWireBoundingBox());
                        }
            ++it;
        }

                SceneManager::_renderVisibleObjects();
        
                // delete all rendered objects from renderqueue
                _deleteRenderedQueueGroups();
        }
}