first commit

motions/base.cpp

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+//
+// Created by dominik on 8/12/24.
+//
+
+#include <cmath>
+#include <random>
+
+#include "base.h"
+
+Motion::Motion(const double delta, const double eta, std::mt19937_64& rng) : m_delta(delta), m_eta(eta), m_rng(rng) {
+    m_uni_dist = std::uniform_real_distribution(0., 1.);
+}
+
+Motion::Motion(std::mt19937_64& rng) : m_rng(rng) {
+    m_uni_dist = std::uniform_real_distribution(0., 1.);
+}
+
+double Motion::omega_q(const double cos_theta, const double phi) const {
+    const double cos_theta_square = cos_theta * cos_theta;
+    const double sin_theta_square = 1. - cos_theta_square;
+
+    return M_PI * m_delta * (3 * cos_theta_square - 1 - m_eta * sin_theta_square * cos(2.*phi));
+}
+
+double Motion::draw_position() {
+    const double cos_theta = 1 - 2 * m_uni_dist(m_rng);
+    const double phi = 2.0 * M_PI * m_uni_dist(m_rng);
+
+    return omega_q(cos_theta, phi);
+}
+

motions/base.h

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+//
+// Created by dominik on 8/12/24.
+//
+
+#ifndef RWSIM_MOTIONBASE_H
+#define RWSIM_MOTIONBASE_H
+
+
+#include <random>
+
+class Motion {
+public:
+    virtual ~Motion() = default;
+
+    Motion(double, double, std::mt19937_64&);
+    explicit Motion(std::mt19937_64&);
+
+    double draw_position();
+    [[nodiscard]] double omega_q(double, double) const;
+
+    virtual double jump() = 0;
+
+    [[nodiscard]] double getDelta() const { return m_delta; }
+    void setDelta(const double delta) { m_delta = delta; }
+    [[nodiscard]] double getEta() const { return m_eta; }
+    void setEta(const double eta) { m_eta = eta; }
+
+private:
+    double m_delta{1.};
+    double m_eta{0.};
+    std::mt19937_64& m_rng;
+    std::uniform_real_distribution<double> m_uni_dist;
+};
+
+#endif //RWSIM_MOTIONBASE_H

motions/random.cpp

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+//
+// Created by dominik on 8/12/24.
+//
+
+#include "random.h"
+
+
+RandomJump::RandomJump(const double delta, const double eta, std::mt19937_64 &rng) : Motion(delta, eta, rng) {}
+
+RandomJump::RandomJump(std::mt19937_64 &rng) : Motion(rng) {}
+
+double RandomJump::jump() {
+    return draw_position();
+}

motions/random.h

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+//
+// Created by dominik on 8/12/24.
+//
+
+#ifndef RWSIM_MOTIONRANDOMJUMP_H
+#define RWSIM_MOTIONRANDOMJUMP_H
+
+
+#include "base.h"
+#include <random>
+class RandomJump final : public Motion {
+public:
+    RandomJump(double, double, std::mt19937_64&);
+    explicit RandomJump(std::mt19937_64&);
+
+    double jump() override;
+};
+
+#endif //RWSIM_MOTIONRANDOMJUMP_H

motions/tetrahedral.cpp

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+//
+// 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(delta, eta, rng) {}
+
+TetrahedralJump::TetrahedralJump(std::mt19937_64& rng) : Motion(rng) {}
+
+double TetrahedralJump::jump() {
+    return draw_position();
+}

motions/tetrahedral.h

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+//
+// Created by dominik on 8/16/24.
+//
+
+#ifndef RWSIM_MOTIONTETRAHEDRAL_H
+#define RWSIM_MOTIONTETRAHEDRAL_H
+
+#include "base.h"
+#include <random>
+
+class TetrahedralJump final : public Motion {
+public:
+    TetrahedralJump(double, double, std::mt19937_64&);
+    explicit TetrahedralJump(std::mt19937_64&);
+
+    double jump() override;
+};
+
+
+#endif //RWSIM_MOTIONTETRAHEDRAL_H