#include "isosmallangle.h"
#include "coordinates.h"

#include <iostream>



SmallAngle::SmallAngle(const double delta, const double eta, const double chi, std::mt19937_64 &rng) :
    Motion(std::string("IsotropicAngle"), delta, eta, rng), m_chi(chi * M_PI / 180.0) {};
SmallAngle::SmallAngle(std::mt19937_64 &rng) : Motion(std::string("IsotropicAngle"), rng) {}

void SmallAngle::initialize() {
    m_prev_pos = draw_position();
    m_initial_omega = omega_q(m_prev_pos);
};

double SmallAngle::jump() {
    const double gamma{2 * M_PI * m_uni_dist(m_rng)};
    m_prev_pos = rotate(m_prev_pos, m_chi, gamma);

    return omega_q(m_prev_pos);
}

void SmallAngle::setParameters(const std::unordered_map<std::string, double> &parameters) {
    m_chi = parameters.at("angle") * M_PI / 180.0;
    Motion::setParameters(parameters);
}