shooter/engine/Vec3D.h

//
// Created by Иван Ильин on 09.10.2021.
//

#ifndef SHOOTER_VEC3D_H
#define SHOOTER_VEC3D_H

#include <array>

#include "Vec4D.h"

class Vec3D final {
private:
    std::array<double, 3> _arr_point{};

public:
    Vec3D() = default;

    Vec3D(const Vec3D &vec);

    explicit Vec3D(const Vec4D &vec);

    explicit Vec3D(double x, double y = 0.0, double z = 0.0);

    Vec3D &operator=(const Vec3D &) = default;

    [[nodiscard]] double x() const { return _arr_point[0]; }
    [[nodiscard]] double y() const { return _arr_point[1]; }
    [[nodiscard]] double z() const { return _arr_point[2]; }

    [[nodiscard]] Vec3D operator-() const;

    // Boolean operations
    bool operator==(const Vec3D &vec) const;
    bool operator!=(const Vec3D &vec) const;

    // Operations with Vec4D
    [[nodiscard]] Vec3D operator+(const Vec3D &vec) const;
    [[nodiscard]] Vec3D operator-(const Vec3D &vec) const;

    [[nodiscard]] double dot(const Vec3D &vec) const; // Returns dot product
    [[nodiscard]] Vec3D cross(const Vec3D &vec) const; // Returns cross product

    // Operations with numbers
    [[nodiscard]] Vec3D operator*(double number) const;
    [[nodiscard]] Vec3D operator/(double number) const;

    // Other useful methods
    [[nodiscard]] double sqrAbs() const; // Returns squared vector length
    [[nodiscard]] double abs() const; // Returns vector length
    [[nodiscard]] Vec3D normalized() const; // Returns normalized vector without changing
    [[nodiscard]] Vec4D makePoint4D() const;

    static Vec3D Random();
};


#endif //SHOOTER_VEC3D_H