ray-tracing/vector.h at main · GlitchedCode922/ray-tracing · GitHub

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#pragma once
#include <math.h>

class Vector3 {
public:
    float x, y, z;

    Vector3(): x(0), y(0), z(0) {}
    Vector3(float x, float y, float z): x(x), y(y), z(z) {}
    Vector3(float x): x(x), y(x), z(x) {}

    Vector3 operator+(const Vector3& other) const {
        return Vector3(x + other.x, y + other.y, z + other.z);
    }

    Vector3 operator+(float scalar) const {
        return Vector3(x + scalar, y + scalar, z + scalar);
    }

    Vector3 operator-(const Vector3& other) const {
        return Vector3(x - other.x, y - other.y, z - other.z);
    }

    Vector3 operator-(float scalar) const {
        return Vector3(x - scalar, y - scalar, z - scalar);
    }

    Vector3 operator*(float scalar) const {
        return Vector3(x * scalar, y * scalar, z * scalar);
    }

    Vector3 operator*(const Vector3& other) const {
        return Vector3(x * other.x, y * other.y, z * other.z);
    }

    Vector3 operator/(const Vector3& other) const {
        return Vector3(x / other.x, y / other.y, z / other.z);
    }

    Vector3 operator/(float scalar) const {
        return Vector3(x / scalar, y / scalar, z / scalar);
    }

    Vector3 operator+=(const Vector3& other) {
        x += other.x; y += other.y; z += other.z;
        return *this;
    }

    Vector3 operator+=(float scalar) {
        x += scalar; y += scalar; z += scalar;
        return *this;
    }

    Vector3 operator-=(const Vector3& other) {
        x -= other.x; y -= other.y; z -= other.z;
        return *this;
    }

    Vector3 operator-=(float scalar) {
        x -= scalar; y -= scalar; z -= scalar;
        return *this;
    }

    Vector3 operator*=(const Vector3& other) {
        x *= other.x; y *= other.y; z *= other.z;
        return *this;
    }

    Vector3 operator*=(float scalar) {
        x *= scalar; y *= scalar; z *= scalar;
        return *this;
    }

    Vector3 operator/=(const Vector3& other) {
        x /= other.x; y /= other.y; z /= other.z;
        return *this;
    }

    Vector3 operator/=(float scalar) {
        x /= scalar; y /= scalar; z /= scalar;
        return *this;
    }

    bool operator==(const Vector3& other) const {
        return x == other.x && y == other.y && z == other.z;
    }

    bool operator!=(const Vector3& other) const {
        return !(*this == other);
    }

    float dot(const Vector3& other) const {
        return x * other.x + y * other.y + z * other.z;
    }

    Vector3 operator+() {
        return *this;
    }

    Vector3 operator-() {
        return *this * -1;
    }

    Vector3 cross(const Vector3& other) const {
        return Vector3(
            y * other.z - z * other.y,
            z * other.x - x * other.z,
            x * other.y - y * other.x
        );
    }

    float magnitude() const {
        return sqrt(x * x + y * y + z * z);
    }

    Vector3 normalize() const {
        float mag = magnitude();
        return Vector3(x / mag, y / mag, z / mag);
    }

    Vector3 linear_to_srgb() const {
        return Vector3(
            powf(x, 1.0f / 2.2f),
            powf(y, 1.0f / 2.2f),
            powf(z, 1.0f / 2.2f)
        );
    }

    Vector3 srgb_to_linear() const {
        return Vector3(
            powf(x, 2.2f),
            powf(y, 2.2f),
            powf(z, 2.2f)
        );
    }

    Vector3 reinhard_tone_map() const {
        return Vector3(
            x / (1.0f + x),
            y / (1.0f + y),
            z / (1.0f + z)
        );
    }

    Vector3 aces_tone_map() const {
        const float a = 2.51f;
        const float b = 0.03f;
        const float c = 2.43f;
        const float d = 0.59f;
        const float e = 0.14f;

        return Vector3(
            (x * (a * x + b)) / (x * (c * x + d) + e),
            (y * (a * y + b)) / (y * (c * y + d) + e),
            (z * (a * z + b)) / (z * (c * z + d) + e)
        );
    }
};

inline Vector3 operator+(const float lhs, const Vector3 rhs) {
    return rhs + lhs;
}

inline Vector3 operator-(const float lhs, const Vector3 rhs) {
    return rhs * -1 + lhs;
}

inline Vector3 operator*(const float lhs, const Vector3 rhs) {
    return rhs * lhs;
}

inline Vector3 operator/(const float lhs, const Vector3 rhs) {
    return Vector3(lhs / rhs.x, lhs / rhs.y, lhs / rhs.z);
}