surfacepatch3d.h

/* *************************************************************************
                          surfacepatch3d.h  -  description
                             -------------------
    begin                : Sat Nov 30 2002
    copyright            : (C) 2002 by Micha Riser
    email                : mriser@gmx.net
    
    $Id: surfacepatch3d_8h-source.html,v 1.1 2005/02/04 21:02:27 micha Exp $
    
 ************************************************************************* */

/* *************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ************************************************************************* */

#ifndef SURFACEPATCH_H
#define SURFACEPATCH_H

#include "types.h"
#include "vector.h"

class Intersection;
class Ray;

class SurfacePatch3D {

public: // Constructor and destructor
    SurfacePatch3D() {}
    virtual ~SurfacePatch3D() {}

public:
    // Methods used during pre-rendering stage:
    
    virtual SurfacePatch3D* duplicate() const = 0;    

    virtual bool hasFinitBounding() const = 0;

    virtual Vector3 getBoundingMin() const = 0;

    virtual Vector3 getBoundingMax() const = 0;

    virtual void prepareToRender() {}

        
    // Methods used during rendering:
    
    virtual DBL intersectBounding(const Ray &r) const = 0;

    virtual DBL intersectBounding(const Ray &r, DBL tmax) const = 0;

    virtual Intersection* intersect(const Ray &r) const;

    virtual Intersection* intersectLimitedTime(const Ray &r, DBL maxtime) const = 0;

};

#endif

---