source: GTP/trunk/App/Demos/Vis/FriendlyCulling/src/BvhConstructor.h @ 3264

#ifndef __BVHCONSTRUCTOR_H
#define __BVHCONSTRUCTOR_H

#include "Bvh.h"



namespace CHCDemoEngine
{

/** This class represents a bvh construction algorithm
*/
class BvhConstructor
{
public:

        BvhConstructor(SceneEntity **entities, int first, int last);

        /** Constructs a bvh and returns the root and the number of bvh nodes.
        */
        BvhNode *Construct(int &nodes);


protected:

        int SortTriangles(BvhLeaf *leaf, int axis, float position);

        int SortTrianglesSpatialMedian(BvhLeaf *leaf, int axis);

        BvhNode *SubdivideLeaf(BvhLeaf *leaf, int parentAxis);

        inline bool TerminationCriteriaMet(BvhLeaf *leaf) const;


        /////////////////

        SceneEntity **mEntities;

        int mFirst;
        int mLast;

        int mMaxDepth;
        int mMaxObjects;
        int mNumNodes;
};

}

#endif // __BVH_H