source: GTP/trunk/Lib/Geom/shared/GTGeometry/include/GeoLodManager.h @ 1069

/*==========================================================================
 *      (C) 2006 Universidad Jaime I de Castellón
 *==========================================================================
 *      PROYECT:        GAME TOOLS
 *==========================================================================*/
/*      CONTENT:
 *
 *
 *      @file   GeoLodManager.h
 *==========================================================================*/

#ifndef _GEOLODMANAGER
#define _GEOLODMANAGER

#include "GeoVector3.h"
#include "GeoLodObject.h"
#include <map>

namespace Geometry
{
        class lodobj_dist_node_t
        {
        public:
                lodobj_dist_node_t(LodObject *o):dist2cam(0.0f),lodobj(o),must_recalculate_distance(true){}
                lodobj_dist_node_t(const lodobj_dist_node_t &c):dist2cam(c.dist2cam),lodobj(c.lodobj),must_recalculate_distance(c.must_recalculate_distance){}
                lodobj_dist_node_t(void):dist2cam(0.0f),lodobj(NULL),must_recalculate_distance(true){}
                float dist2cam;
                LodObject *lodobj;
                bool operator < (const lodobj_dist_node_t &o) const { return (dist2cam < o.dist2cam); }
                bool must_recalculate_distance;
        };

        class lodobj_idpos_node_t;

        class LodManager
        {       
        public:
                LodManager(float near, float far, const Geometry::Vector3 &campos);
                void AddLodObj(LodObject*, const Geometry::Vector3 &);
                void UpdateLOD(void);
                void UpdateCamera(const Geometry::Vector3 &);
                void UpdateLODObjectPos(LodObject*,const Geometry::Vector3 &);
        private:
                std::map<float,Geometry::lodobj_dist_node_t> lodobj_dists; // key: dist2cam for efficient distance finding
                std::map<Geometry::lodobj_idpos_node_t,Geometry::Vector3> lodobj_pos; // map key: LodObject UniqueID for efficient ID-based finding
                unsigned int targetFPS;
                Vector3 camera_pos;
                bool camera_changed;
                float near_range, far_range;
                float CalculateDistToCamera(const Geometry::Vector3 &) const;
                float SelectRandomDistance(void) const;
        };
};

#endif