source: GTP/trunk/App/Demos/Vis/FriendlyCulling/src/Pvs.h @ 3283

#ifndef __PVS_H
#define __PVS_H

#include "common.h"
#include "Bvh.h"

namespace CHCDemoEngine
{

class BvhNode;
class Bvh;


/** Class representing the Potentially Visible Set (PVS) from a view cell.
*/
class Pvs
{

public:

        void Clear();

        bool Empty() const;

        void AddEntry(Bvh *bvh, BvhNode *node);

        int GetSize() const;

        inline SceneEntity *GetEntry(int i) const;

        inline void AddEntry(SceneEntity *ent, float timeStamp = 0.0f);


protected:

        /// vector of PVS entries
        SceneEntityContainer mEntries; 
        std::vector<float> mTimeStamps;

        static bool sStoreTimeStamps;
};


inline SceneEntity *Pvs::GetEntry(int i) const 
{
        return mEntries[i]; 
}


inline void Pvs::AddEntry(SceneEntity *ent, float timeStamp) 
{
        mEntries.push_back(ent); 

        if (sStoreTimeStamps)
        {
                mTimeStamps.push_back(timeStamp);
        }
}


inline int Pvs::GetSize() const
{ 
        return (int)mEntries.size(); 
}


inline void Pvs::AddEntry(Bvh *bvh, BvhNode *node) 
{
        int geometrySize;
        SceneEntity **entities;
        entities = bvh->GetGeometry(node, geometrySize);

        for (int i = 0; i < geometrySize; ++ i)
        {
                AddEntry(entities[i]);
        }
}


}

#endif