source: trunk/VUT/OcclusionCullingSceneManager/src/OgreOcclusionCullingTerrainSceneManager.cpp @ 51

#include "OgreOcclusionCullingTerrainSceneManager.h"
#include "OgreMath.h"
#include "OgreIteratorWrappers.h"
#include "OgreRenderSystem.h"
#include "OgreCamera.h"
#include "OgreHardwareOcclusionQuery.h"
#include "OgreSolidHalfBoundingBox.h"

#include <windows.h>

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

                //mDisplayNodes = true;
                //mShowBoundingBoxes = true;
                mShowBoxes = true;
                mMaxDepth = 20;
        }
        //-----------------------------------------------------------------------
        OcclusionCullingTerrainSceneManager::~OcclusionCullingTerrainSceneManager()
        {
                delete mOcclusionCullingOctreeSceneTraverser;
        }
        //-----------------------------------------------------------------------
        void OcclusionCullingTerrainSceneManager::_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 OcclusionCullingTerrainSceneManager::_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 OcclusionCullingTerrainSceneManager::_updateSceneGraph(Camera* cam)
        {
                //char *msg = "now updating scenegraph\n"; OutputDebugString(msg);
                //mOcclusionCullingTerrainSceneTraverser->preprocess();

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

                TerrainSceneManager::_updateSceneGraph(cam);
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingTerrainSceneManager::setOption( const String & key, const void * val )
        {
                return mOcclusionCullingOctreeSceneTraverser->setOption( key, val) || TerrainSceneManager::setOption( key, val );
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingTerrainSceneManager::getOption( const String & key, void *val )
        {
                return mOcclusionCullingOctreeSceneTraverser->getOption( key, val) || TerrainSceneManager::getOption( key, val ) ;
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingTerrainSceneManager::getOptionValues( const String & key, StringVector  &refValueList )
        {
                return TerrainSceneManager::getOptionValues( key, refValueList );
        }
        //-----------------------------------------------------------------------
        bool OcclusionCullingTerrainSceneManager::getOptionKeys( StringVector & refKeys )
        {
                return mOcclusionCullingOctreeSceneTraverser->getOptionKeys ( refKeys ) || TerrainSceneManager::getOptionKeys( refKeys );
        }
        //-----------------------------------------------------------------------
        /*unsigned int OcclusionCullingTerrainSceneManager::countNumOctrees(Octree *root)
        {
                unsigned int result = 1;
                                
                for(int i=0; i<8; ++i)
                {
                        Octree *nextChild = root->mChildren[(i & 4) >> 2][(i & 2) >> 1][i & 1];
                
                        if(nextChild != 0)
                                result += countNumOctrees(nextChild);
                }
                
                return result;
        }*/
}