Visitor.h

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/* $Id: Visitor.h,v 1.4 2002/12/05 14:52:24 cvs Exp $ */

#ifndef __VISITOR_H
#define __VISITOR_H

#include <esg/Export>

namespace esg {

class OGSCENE_EXPORT Geometry;
class OGSCENE_EXPORT Roughness;
class OGSCENE_EXPORT Specular;
class OGSCENE_EXPORT Diffuse;
class OGSCENE_EXPORT Ambient;
class OGSCENE_EXPORT Reflection;
class OGSCENE_EXPORT Refraction;
class OGSCENE_EXPORT IndexOfRefraction;
class OGSCENE_EXPORT FresnelTerm;
class OGSCENE_EXPORT GaussianCoef;
class OGSCENE_EXPORT Transform;
class OGSCENE_EXPORT Transparency;
class OGSCENE_EXPORT PhotonMapBehaviour;

class OGSCENE_EXPORT Visitor {
public:
    virtual ~Visitor () {}

    virtual void visitGeometry           (Geometry*)           {}
    virtual void visitRoughness          (Roughness*)          {}
    virtual void visitSpecular           (Specular*)           {}
    virtual void visitDiffuse            (Diffuse*)            {}
    virtual void visitAmbient            (Ambient*)            {}
    virtual void visitReflection         (Reflection*)         {}
    virtual void visitRefraction         (Refraction*)         {}
    virtual void visitIndexOfRefraction  (IndexOfRefraction*)  {}
    virtual void visitTransparency       (Transparency*)       {}
    virtual void visitFresnelTerm        (FresnelTerm*)        {}
    virtual void visitGaussianCoef       (GaussianCoef*)       {}
    virtual void visitTransform          (Transform*)          {}
    virtual void visitPhotonMapBehaviour (PhotonMapBehaviour*) {}
    
    virtual void init (void) {}
};

}; // namespace

#endif //__VISITOR_H

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