LightMap.h

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/* $Id:$ */

#ifndef __LIGHT_MAP_H
#define __LIGHT_MAP_H

#include <esg/energy/EnergyMap.h>

namespace esg {

class OGSCENE_EXPORT LightMap : public EnergyMap {
public:
    enum MapIndex {
        LEFT_MAP   = 0,
        RIGHT_MAP  = 1,
        NEAR_MAP   = 2,
        FAR_MAP    = 3,
        BOTTOM_MAP = 4,
        TOP_MAP    = 5
    };
    
protected:
    Color3f ** _lightMap;
    Vector3    _centroid;
    Vector3    _extent;    // length (!) of x, y and z directions
    
public:
    LightMap (unsigned       /* u res.   */,
              unsigned       /* v res.   */,
              const Vector3& /* extent   */,
              const Vector3& /* centroid */);

    ~LightMap ();

    virtual bool getPointEnergy (const Vector3& /* location of particle */,
                                 Vector3&       /* energy values */);
    
    virtual bool setPointEnergy (const Vector3& /* loc. of energy particle */,
                                 const Vector3& /* energy values */);

    bool setValue (MapIndex, unsigned, unsigned, const Color3f&);
    bool getValue (MapIndex, unsigned, unsigned, Color3f&) const;

    bool getMapCoords(const Vector3& /* point on surface       */,
                      MapIndex&      /* corresponding map      */,
                      unsigned&      /* corresponding u coord. */,
                      unsigned&      /* corresponding v coord. */) const;

    Vector3 centroid (void) const { return _centroid; }
    Vector3 extent   (void) const { return _extent;   }
};
    
}; // namespace

#endif // __LIGHT_MAP_H

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