source: trunk/VUT/GtpVisibility/include/CoherentHierarchicalCullingManager.h @ 142

#ifndef _CoherentHierarchicalCullingManager_H__
#define _CoherentHierarchicalCullingManager_H__

#include "CullingManager.h"
#include "HierarchyInterface.h"


namespace GtpVisibility
{

/** Renders the scene with the coherent hierarchical culling algorithm. 
*/
class CoherentHierarchicalCullingManager : public CullingManager
{
public:
        CoherentHierarchicalCullingManager();
        void RenderScene();
        /** Sets assumed visibility which is a decition variable 
                wether an occlusion query should be issued or not.
                @param assumedVisibility indicates that same visibility should be assumed
                 for approximately assumedVisibility frames. 
                 if 0, no assumedVisibility will be tested.
        */
        void SetAssumedVisibility(int assumedVisibility);
protected:
        /** Decides wether occlusion query should be issued depending on some 
                assumed visibility factor.
                @returns if occlusion query should be issued
        */
        bool DecideQueryTest(HierarchyNode *node) const;
        int mAssumedVisibility;
};

} // namespace GtpVisibility

#endif // CoherentHierarchicalCullingManager_H