PhotonMapBehaviour.h

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/* $Id:$ */

#ifndef __PHOTON_MAP_BEHAVIOUR_H
#define __PHOTON_MAP_BEHAVIOUR_H

#include <esg/SGAttribute.h>

namespace esg {

class OGSCENE_EXPORT PhotonMapBehaviour : public SGAttribute {
    public:
        enum Behaviour {
            NOTHING = 0,
            MAKE_CAUSTICS,
            ACCEPT_CAUSTICS,
            ACCEPT_GLOBAL_PHOTONS
        };

    protected:
        int _behaviour;
    
    protected:
        virtual void _duplicate_attributes (const SGAttribute& src) {
            SGAttribute::_duplicate_attributes(src);
            _behaviour = ((PhotonMapBehaviour&)src)._behaviour;
        }

        PhotonMapBehaviour () {}
  
    public:
        PhotonMapBehaviour(int b) : _behaviour(b) {}

        virtual void acceptVisitor (Visitor& visitor) {
            visitor.visitPhotonMapBehaviour(this);
        }

        virtual SGAttribute* clone () const {
            PhotonMapBehaviour* pRet = new PhotonMapBehaviour;
            pRet->_duplicate_attributes(*this);
            return pRet;
        }

        void addBehaviour(int b) { _behaviour |= b; }

        void setBehaviour(int b) { _behaviour = b; }

        void setMakeCaustic(void) {_behaviour |= MAKE_CAUSTICS; }

        void setAcceptCaustics(void) {_behaviour |= ACCEPT_CAUSTICS; }

        void setAcceptGlobalPhotons(void) {
            _behaviour |= ACCEPT_GLOBAL_PHOTONS;
        }

        void unsetBehaviour(int b) { _behaviour &= ~b; }

        void unsetMakeCaustic(void) {_behaviour &= ~MAKE_CAUSTICS; }

        void unsetAcceptCaustics(void) { _behaviour &= ~ACCEPT_CAUSTICS; }

        void unsetAcceptGlobalPhotons(void) {
            _behaviour &= ~ACCEPT_GLOBAL_PHOTONS;
        }

        int  getBehaviour(void) const { return _behaviour; }

        bool acceptsGlobalPhotons(void) const {
            return (_behaviour & ACCEPT_GLOBAL_PHOTONS);
        }

        bool acceptsCaustics(void) const {
            return (_behaviour & ACCEPT_CAUSTICS);
        }

        bool makesCaustics (void) const {
            return (_behaviour & MAKE_CAUSTICS);
        }
};
    
}; // namespace

#endif // __PHOTON_MAP_BEHAVIOUR_H

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