source: GTP/trunk/App/Demos/Vis/FriendlyCulling/src/LODInfo.h @ 2853

#ifndef __LODINFO_H
#define __LODINFO_H

#include "common.h"
#include "Vector3.h"


namespace CHCDemoEngine 
{

/** Class representing information about an LOD level.
        The distance parameter indicates the distance where this
        lod level is invoked - if the parameter value is smaller or equal 
        than the distance to the view point.
*/
struct LODLevel
{
        //friend class SceneEntity;

public:
        
        LODLevel(float squaredDist): mSquaredDistance(squaredDist) {}

        inline float GetSquaredDistance() { return mSquaredDistance; }

        inline int GetNumShapes() { return (int)mShapes.size(); }
        
        inline int GetNumTriangles() { return mNumTriangles; }

        inline Shape *GetShape(size_t i) { return mShapes[i]; }

        inline ShapeContainer &GetShapes() { return mShapes; }

        void AddShape(Shape *shape);


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

        /** Has to be called each frame in order to use proper LOD level.
        */
        static void InitFrame(const Vector3 &viewPoint);


        static int sFrameId;
        static Vector3 sViewPoint;



protected:

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

        float mNumTriangles;

        /// distance of this LOD level
        float mSquaredDistance;
        /// shapes belonging to this LOD level
        ShapeContainer mShapes;
};

}

#endif // __LODINFO_H