Sampler.h

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/*
 * Copyright (C) <2012> <EDF-R&D> <FRANCE>
 * 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.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef SAMPLER_H
#define SAMPLER_H
 
#include "Geometry/mathlib.h"
 
class Sampler
{
public:
    Sampler(const unsigned int& nbRays = 0, const decimal& Theta = (decimal)M_PIDIV2,
            const decimal& Phi = (decimal)M_2PI)
        : _nb_rays(nbRays), _theta(Theta), _phi(Phi)
    {
    }
    Sampler(const Sampler& other)
    {
        _theta = other._theta;
        _phi = other._phi;
 
        _nb_rays = other._nb_rays;
    }
 
    Sampler(Sampler* sampler)
    {
        _theta = sampler->_theta;
        _phi = sampler->_phi;
 
        _nb_rays = sampler->_nb_rays;
    }
    virtual Sampler* Clone()
    {
        Sampler* sampler = new Sampler(this);
        return sampler;
    }
    virtual ~Sampler() {}
 
    virtual vec3 getSample()
    {
        return vec3(0.0, 0.0, 0.0);
    }
    virtual bool isAcceptableSample(vec3 v)
    {
        return false;
    }
    virtual void init() {}
 
    virtual unsigned int getNbRays() const
    {
        return _nb_rays;
    }
    virtual void setNbRays(const unsigned int& nbRays)
    {
        _nb_rays = nbRays;
        init();
    }
 
    decimal getTheta() const
    {
        return _theta;
    }
    void setTheta(const decimal& Theta)
    {
        _theta = Theta;
        init();
    }
 
    decimal getPhi() const
    {
        return _phi;
    }
    void setPhi(const decimal& Phi)
    {
        _phi = Phi;
        init();
    }
 
    virtual unsigned int computeDiffractionNbr(const decimal& theta)
    {
        return 0;
    }
 
protected:
    unsigned int _nb_rays; 
    decimal _theta;        
    decimal _phi;          
};
 
#endif