source: trunk/VUT/Ogre/include/OgreVisibilityTerrainSceneManager.h @ 153

#ifndef _VisibilityTerrainSceneManager_H__
#define _VisibilityTerrainSceneManager_H__

#include <OgreSceneNode.h>
#include <OgreTerrainSceneManager.h>
#include <OgreOctreeNode.h>
#include <OgreOctreeCamera.h>
#include <OgrePrerequisites.h>

#include "OgreOctreeHierarchyInterface.h"
#include "OgrePlatformQueryManager.h"
#include "VisibilityManager.h"

namespace Ogre {

/**
        This class extends the terrain scene manager,
        using occlusion queries for visibility culling.
*/
class __declspec(dllexport) VisibilityTerrainSceneManager: public TerrainSceneManager
{
public:
        VisibilityTerrainSceneManager(GtpVisibility::VisibilityManager *visManager);
        ~VisibilityTerrainSceneManager();

        void _renderVisibleObjects();
        void _findVisibleObjects(Camera* cam, bool onlyShadowCasters);
        void _updateSceneGraph(Camera* cam);

        /** Sets the given option for the SceneManager
                @remarks Options are: "Algorithm", int *;                       
        */
        
        virtual bool setOption( const String &, const void * );
        /** Gets the given option for the Scene VisibilityManager.
            @remarks
                See setOption
        */
        virtual bool getOption( const String &, void * );

        bool getOptionValues( const String & key, StringVector &refValueList );
        bool getOptionKeys( StringVector &refKeys );

        /** Sets the visibility manager.
                @param visManager the visibility manager
        */
        void setVisibilityManager(GtpVisibility::VisibilityManager *visManager);
        /** See set.
        */
        GtpVisibility::VisibilityManager *getVisibilityManager();

        /** Render a set of objects, see renderSingleObject for param definitions 
                Override so we can handle delayed rendering of transparent objects
        */
        virtual void renderObjects(const RenderPriorityGroup::TransparentRenderablePassList& objs, 
            bool doLightIteration, const LightList* manualLightList = 0);

        /** Writes out stats into the Ogre log file.
        */
        void WriteLog();

        /** Override pass so we can do the z-fail pass. 
        */
        Pass* setPass(Pass* pass);

        /** Override from SceneManager so we can skip all but first pass for depth pass. 
        */
        bool validatePassForRendering(Pass* pass);

        void RenderItemBuffer(RenderPriorityGroup* pGroup);
        void RenderSingleObjectForItemBuffer(Renderable *rend, Pass *pass);
        void renderQueueGroupObjects(RenderQueueGroup* pGroup);

        /** Override from SceneManager so that sub entities can be assigned an id for item buffer.
        */
        Entity* createEntity(const String& entityName, const String& meshName);

        /** Returns pointer to visibility manager.
        */
        GtpVisibility::VisibilityManager *GetVisibilityManager();

        /** Returns hierarchy interface.
        */
        OctreeHierarchyInterface *GetHierarchyInterface();

protected:
        
        /** Creates material for depth pass, e.g., a pass that only fills the depth buffer. 
        */
        void InitDepthPass();
        /** Creates material for item buffer. 
        */
        void InitItemBufferPass();
        /** Fills render queue so that a visualization can be rendered. 
        */
        void PrepareVisualization(Camera *cam);
        
        void InitVisibilityCulling(Camera *cam);


        OctreeHierarchyInterface *mHierarchyInterface;
        GtpVisibility::VisibilityManager *mVisibilityManager;

        bool mShowVisualization;
        bool mVisualizeCulledNodes;

        bool mRenderNodesForViz;
        bool mRenderNodesContentForViz;
        bool mDelayRenderTransparents;
        bool mUseDepthPass;
        bool mRenderDepthPass;
        bool mRenderItemBuffer;
        bool mUseItemBuffer;
        bool mEnableDepthWrite;
        bool mSkipTransparents;

        Pass *mDepthPass;
        Pass *mItemBufferPass;

        int mCurrentEntityId;

        int mLeavePassesInQueue;
        ShadowTechnique mSavedShadowTechnique;
};

} // namespace Ogre

#endif // CullingTerrainSceneManager_H