#include "math/math_vector.h"
#include <cmath>

using namespace engine::math;

MathVector2::MathVector2() {
}

MathVector2::MathVector2(float x, float y) : x{x}, y{y} {
}

bool MathVector2::operator==(MathVector2 other) const {
    return x == other.x && y == other.y;
}

bool MathVector2::operator!=(MathVector2 other) const {
    return !(*this == other);
}

MathVector2 MathVector2::operator+() const {
    return *this;
}

MathVector2 MathVector2::operator-() const {
    return { -x, -y };
}

MathVector2 MathVector2::operator+(MathVector2 other) const {
    return { x + other.x, y + other.y };
}

MathVector2 MathVector2::operator-(MathVector2 other) const {
    return *this + (-other);
}

float MathVector2::det(MathVector2 other) const {
    return this->x * other.y - other.x * this->y;
}

MathVector2 MathVector2::round() const {
    return { std::round(x), std::round(y) };
}

MathVector2 engine::math::operator*(float n, MathVector2 other) {
    return { n * other.x, n * other.y };
}

MathVector2 engine::math::operator*(MathVector2 other, float n) {
    return n * other;
}

MathVector2 engine::math::operator/(MathVector2 other, float n) {
    return { other.x / n, other.y / n };
}

MathVector3::MathVector3() {
}

MathVector3::MathVector3(float x, float y, float z) : x{x}, y{y}, z{z} {
}

bool MathVector3::operator==(MathVector3 other) const {
    return x == other.x && y == other.y && z == other.z;
}

bool MathVector3::operator!=(MathVector3 other) const {
    return !(*this == other);
}

MathVector3 MathVector3::operator+() const {
    return *this;
}

MathVector3 MathVector3::operator-() const {
    return { -x, -y, -z };
}

MathVector3 MathVector3::operator+(MathVector3 other) const {
    return { x + other.x, y + other.y, z + other.z };
}

MathVector3 MathVector3::operator-(MathVector3 other) const {
    return *this + (-other);
}

MathVector3 MathVector3::round() const {
    return { std::round(x), std::round(y), std::round(z) };
}

MathVector2 MathVector3::xy() const {
    return { x, y };
}

MathVector3 MathVector3::cross(MathVector3 other) const {
    return {
        y * other.z - z * other.y,
        z * other.x - x * other.z,
        x * other.y - y * other.x
    };
}

MathVector3 engine::math::operator*(float n, MathVector3 other) {
    return { n * other.x, n * other.y, n * other.z };
}

MathVector3 engine::math::operator*(MathVector3 other, float n) {
    return n * other;
}

MathVector3 engine::math::operator/(MathVector3 other, float n) {
    return { other.x / n, other.y / n, other.z / n };
}

MathVector4::MathVector4() {
}

MathVector4::MathVector4(float x, float y, float z, float w) : x{x}, y{y}, z{z}, w{w} {
}

MathVector4::MathVector4(float x, float y, float z) : x{x}, y{y}, z{z}, w{1.f} {
}

MathVector4::MathVector4(MathVector3 v, float w) : x{v.x}, y{v.y}, z{v.z}, w{w} {
}

MathVector4::MathVector4(MathVector3 v) : x{v.x}, y{v.y}, z{v.z}, w{1.f} {
}

bool MathVector4::operator==(MathVector4 other) const {
    return x == other.x && y == other.y && z == other.z && w == other.w;
}

bool MathVector4::operator!=(MathVector4 other) const {
    return !(*this == other);
}

MathVector4 MathVector4::operator+() const {
    return *this;
}

MathVector4 MathVector4::operator-() const {
    return { -x, -y, -z, -w };
}

MathVector4 MathVector4::operator+(MathVector4 other) const {
    return { x + other.x, y + other.y, z + other.z, w + other.w };
}

MathVector4 MathVector4::operator-(MathVector4 other) const {
    return *this + (-other);
}

MathVector4 MathVector4::round() const {
    return { std::round(x), std::round(y), std::round(z), std::round(w) };
}

MathVector3 MathVector4::xyz() const {
    return { x, y, z };
}

MathVector3 MathVector4::div_by_w() const {
    return xyz() / w;
}

MathVector4 engine::math::operator*(float n, MathVector4 other) {
    return { n * other.x, n * other.y, n * other.z, n * other.w };
}

MathVector4 engine::math::operator*(MathVector4 other, float n) {
    return n * other;
}

MathVector4 engine::math::operator/(MathVector4 other, float n) {
    return { other.x / n, other.y / n, other.z / n, other.w / n };
}