cpp/motions/tetrahedral.cpp

//
// Created by dominik on 8/16/24.
//
#include <random>

#include "tetrahedral.h"

TetrahedralJump::TetrahedralJump(const double delta, const double eta, std::mt19937_64& rng) :
    Motion(std::string{"TetrahedralJump"}, delta, eta, rng) {}

TetrahedralJump::TetrahedralJump(std::mt19937_64& rng) : Motion(std::string{"TetrahedralJump"}, rng) {}

void TetrahedralJump::initialize() {
    const auto pos = draw_position();
    m_corners[0] = omega_q(pos);

    const double alpha = 2. * M_PI * m_uni_dist(m_rng);

    for (int i = 1; i<4; i++) {
        auto corner_pos = rotate(pos, m_beta, alpha + (i-1) * 2*M_PI/3.);
        m_corners[i] = omega_q(corner_pos);
    }
}

double TetrahedralJump::jump() {
    m_corner_idx += m_chooser(m_rng);
    m_corner_idx %= 4;

    return m_corners[m_corner_idx];
}