OpalPolynomialTimeDependence.cpp

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/*
 *  Copyright (c) 2012, Chris Rogers
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#include "Elements/OpalPolynomialTimeDependence.h"
 
#include <string>
 
#include "Algorithms/PolynomialTimeDependence.h"
 
#include "Attributes/Attributes.h"
 
const std::string OpalPolynomialTimeDependence::doc_string =
    std::string("The \"POLYNOMIAL_TIME_DEPENDENCE\" element defines ")+\
    std::string("polynomial coefficients for time dependent RF phase, ")+\
    std::string("frequency, amplitude, etc, given by ")+\
    std::string("f(t) = P0+P1*t+P2*t^2+P3*t^3 where t is the time in ns");
 
// I investigated using a StringArray or RealArray here;
// Don't seem to have capacity to handle variables, so for now not implemented
OpalPolynomialTimeDependence::OpalPolynomialTimeDependence()
       : OpalElement(int(SIZE),
                     "POLYNOMIAL_TIME_DEPENDENCE",
                     doc_string.c_str()) {
    itsAttr[P0] = Attributes::makeReal("P0",
      "Constant term in the polynomial expansion.");
    itsAttr[P1] = Attributes::makeReal("P1",
      "First order (linear) term in the polynomial expansion.");
    itsAttr[P2] = Attributes::makeReal("P2",
      "Second order (quadratic) term in the polynomial expansion.");
    itsAttr[P3] = Attributes::makeReal("P3",
      "Third order (cubic) term in the polynomial expansion.");
 
    registerOwnership();
}
 
OpalPolynomialTimeDependence* OpalPolynomialTimeDependence::clone(const std::string &name) {
    return new OpalPolynomialTimeDependence(name, this);
}
 
void OpalPolynomialTimeDependence::print(std::ostream& out) const {
    OpalElement::print(out);
}
 
OpalPolynomialTimeDependence::OpalPolynomialTimeDependence(const std::string &name, OpalPolynomialTimeDependence *parent):
    OpalElement(name, parent) {
}
 
OpalPolynomialTimeDependence::~OpalPolynomialTimeDependence() {}
 
void OpalPolynomialTimeDependence::update() {
    // getOpalName() comes from AbstractObjects/Object.h
    std::vector<double> polynomial_coefficients;
    polynomial_coefficients.push_back(Attributes::getReal(itsAttr[P0]));
    polynomial_coefficients.push_back(Attributes::getReal(itsAttr[P1]));
    polynomial_coefficients.push_back(Attributes::getReal(itsAttr[P2]));
    polynomial_coefficients.push_back(Attributes::getReal(itsAttr[P3]));
 
    AbstractTimeDependence::setTimeDependence(getOpalName(),
                                              std::make_shared<PolynomialTimeDependence>(polynomial_coefficients));
}