MultipoleTCurvedVarRadius.h

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/*
 *  Copyright (c) 2017, Titus Dascalu
 *  Copyright (c) 2018, Martin Duy Tat
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 *  modification, are permitted provided that the following conditions are met:
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 *     this list of conditions and the following disclaimer.
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 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. Neither the name of STFC nor the names of its contributors may be used to
 *     endorse or promote products derived from this software without specific
 *     prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef CLASSIC_MULTIPOLET_CURVED_VAR_RADIUS_H
#define CLASSIC_MULTIPOLET_CURVED_VAR_RADIUS_H

#include "BeamlineGeometry/VarRadiusGeometry.h"
#include "Algorithms/Vektor.h"
#include "AbsBeamline/MultipoleTBase.h"
#include "AbsBeamline/MultipoleTFunctions/RecursionRelationTwo.h"
#include <vector>

class MultipoleTCurvedVarRadius: public MultipoleTBase {
public: 
    explicit MultipoleTCurvedVarRadius(const std::string &name);
    MultipoleTCurvedVarRadius(const MultipoleTCurvedVarRadius &right);
    ~MultipoleTCurvedVarRadius();
    virtual ElementBase* clone() const override;
    void accept(BeamlineVisitor &visitor) const override;
    VarRadiusGeometry& getGeometry() override;
    const VarRadiusGeometry& getGeometry() const override;
    virtual void setMaxOrder(const std::size_t &maxOrder) override;
    std::size_t getMaxXOrder() const;
    void setMaxXOrder(const std::size_t &maxXOrder);
    virtual void setBendAngle(const double &angle) override;
    virtual double getBendAngle() const override;
    virtual void initialise(PartBunchBase<double, 3>* bunch,
                            double &startField,
                            double &endField) override;
private:
    MultipoleTCurvedVarRadius operator=(const MultipoleTCurvedVarRadius& rhs);
    std::size_t maxOrderX_m;
    std::vector<polynomial::RecursionRelationTwo> recursion_m;
    VarRadiusGeometry varRadiusGeometry_m;
    virtual void transformCoords(Vector_t &R) override;
    virtual void transformBField(Vector_t &B, const Vector_t &R) override;
    double angle_m;
    virtual double getRadius(const double &s) override;
    virtual double getScaleFactor(const double &x, const double &s) override;
    virtual double getFn(const std::size_t &n,
                         const double &x,
                         const double &s) override;
};

inline
    void MultipoleTCurvedVarRadius::accept(BeamlineVisitor &visitor) const {
        visitor.visitMultipoleTCurvedVarRadius(*this);
}
inline
    void MultipoleTCurvedVarRadius::setMaxXOrder(
                                      const std::size_t &maxXorder) {
        maxOrderX_m = maxXorder;
}
inline
    std::size_t MultipoleTCurvedVarRadius::getMaxXOrder() const {
        return maxOrderX_m;
}
inline
    VarRadiusGeometry& MultipoleTCurvedVarRadius::getGeometry() {
        return varRadiusGeometry_m;
}
inline
    const VarRadiusGeometry& MultipoleTCurvedVarRadius::getGeometry() const {
        return varRadiusGeometry_m;
}
inline
    void MultipoleTCurvedVarRadius::setBendAngle(const double &angle) {
        angle_m = angle;
}
inline
    double MultipoleTCurvedVarRadius::getBendAngle() const {
        return angle_m;
}
inline
    void MultipoleTCurvedVarRadius::initialise(PartBunchBase<double, 3>* bunch,
                                               double &/*startField*/,
                                               double &/*endField*/) {
        RefPartBunch_m = bunch;
        double length = getLength();
        varRadiusGeometry_m.setElementLength(2 * getBoundingBoxLength());
        varRadiusGeometry_m.setRadius(length / angle_m);
        varRadiusGeometry_m.setS0(length / 2);
        std::vector<double> fringeLength = getFringeLength();
        varRadiusGeometry_m.setLambdaLeft(fringeLength[0]);
        varRadiusGeometry_m.setLambdaRight(fringeLength[1]);
}

#endif