Diffraction.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 DIFFRACTION_H
#define DIFFRACTION_H
 
#include <cmath>
 
#include "Event.h"
#include "Geometry/Repere.h"
#include "Base.h"
 
class Cylindre;
 
class Diffraction : public Event
{
public:
    Diffraction(const vec3& position = vec3(0.0, 0.0, 0.0),
                const vec3& incomingDirection = vec3(0.0, 0.0, 0.0), Cylindre* c = NULL);
    Diffraction(const Diffraction& other);
    virtual ~Diffraction() {}
 
    virtual void setNbResponseLeft(int _nbResponseLeft)
    {
        nbResponseLeft = static_cast<unsigned int>(
            std::floor(static_cast<decimal>(_nbResponseLeft - 1) / M_2PI * angleOuverture + 0.5));
        nbResponseLeft = nbResponseLeft >= 4 ? nbResponseLeft : 4; // Limite le nombre a 4 reponses minimum
        initialNbResponse = nbResponseLeft;
        computeDTheta();
    }
 
    virtual bool getResponse(vec3& r, bool force = false);
 
    bool (*responseValidator)(const vec3&, const vec3&, const vec3&, vec3&);
 
    void (*getTheta)(const decimal&, const decimal&, const decimal&, decimal&);
 
    void setAngleOuverture(decimal angle)
    {
        angleOuverture = angle;
        computeDTheta();
    }
 
    decimal getAngleOuverture()
    {
        return angleOuverture;
    }
 
    decimal getDeltaTheta() const
    {
        return delta_theta;
    }
 
    virtual double getAngle()
    {
        return angleArrive;
    }
    virtual bool generateTest(std::vector<vec3>& succededTest, std::vector<vec3>& failTest,
                              unsigned int nbResponses);
    virtual const Repere& getRepere() const
    {
        return localRepere;
    }
 
#ifdef _ALLOW_TARGETING_
    virtual bool isAcceptableResponse(vec3& test);
    virtual bool generateResponse(std::vector<vec3>& responses, unsigned int nbResponses);
    virtual bool appendTarget(vec3 target, bool force = false);
#endif //_ALLOW_TARGETING_
 
protected:
    void buildRepere();
 
    void computeAngle();
 
    void computeDTheta()
    {
        // Angles should span the aperture angle of the diffraction edge
        delta_theta = angleOuverture / static_cast<decimal>(nbResponseLeft);
    }
 
    Repere localRepere; 
 
    decimal angleOuverture; 
    decimal angleArrive;    
 
    decimal delta_theta; 
 
    vec3 N1; 
    vec3 N2; 
};
 
#endif