307 lines
7.2 KiB
C++
307 lines
7.2 KiB
C++
#ifndef VEC2_HPP
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#define VEC2_HPP
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#include <cmath>
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#include <algorithm>
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#include <string>
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class Vec2 {
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public:
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float x, y;
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Vec2() : x(0), y(0) {}
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Vec2(float x, float y) : x(x), y(y) {}
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Vec2& move(const Vec2 newpos) {
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x = newpos.x;
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y = newpos.y;
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return *this;
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}
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Vec2 operator+(const Vec2& other) const {
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return Vec2(x + other.x, y + other.y);
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}
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Vec2 operator-(const Vec2& other) const {
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return Vec2(x - other.x, y - other.y);
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}
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Vec2 operator*(const Vec2& other) const {
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return Vec2(x * other.x, y * other.y);
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}
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Vec2 operator/(const Vec2& other) const {
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return Vec2(x / other.x, y / other.y);
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}
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Vec2 operator+(float scalar) const {
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return Vec2(x + scalar, y + scalar);
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}
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Vec2 operator-(float scalar) const {
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return Vec2(x - scalar, y - scalar);
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}
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Vec2 operator-() const {
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return Vec2(-x, -y);
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}
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Vec2 operator*(float scalar) const {
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return Vec2(x * scalar, y * scalar);
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}
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Vec2 operator/(float scalar) const {
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return Vec2(x / scalar, y / scalar);
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}
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Vec2& operator=(float scalar) {
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x = y = scalar;
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return *this;
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}
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Vec2& operator+=(const Vec2& other) {
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x += other.x;
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y += other.y;
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return *this;
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}
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Vec2& operator-=(const Vec2& other) {
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x -= other.x;
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y -= other.y;
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return *this;
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}
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Vec2& operator*=(const Vec2& other) {
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x *= other.x;
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y *= other.y;
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return *this;
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}
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Vec2& operator/=(const Vec2& other) {
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x /= other.x;
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y /= other.y;
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return *this;
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}
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Vec2& operator+=(float scalar) {
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x += scalar;
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y += scalar;
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return *this;
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}
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Vec2& operator-=(float scalar) {
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x -= scalar;
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y -= scalar;
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return *this;
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}
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Vec2& operator*=(float scalar) {
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x *= scalar;
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y *= scalar;
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return *this;
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}
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Vec2& operator/=(float scalar) {
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x /= scalar;
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y /= scalar;
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return *this;
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}
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float dot(const Vec2& other) const {
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return x * other.x + y * other.y;
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}
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float length() const {
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return std::sqrt(x * x + y * y);
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}
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float lengthSquared() const {
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return x * x + y * y;
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}
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float distance(const Vec2& other) const {
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return (*this - other).length();
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}
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float distanceSquared(const Vec2& other) const {
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Vec2 diff = *this - other;
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return diff.x * diff.x + diff.y * diff.y;
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}
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Vec2 normalized() const {
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float len = length();
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if (len > 0) {
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return *this / len;
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}
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return *this;
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}
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bool operator==(const Vec2& other) const {
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return x == other.x && y == other.y;
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}
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bool operator!=(const Vec2& other) const {
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return x != other.x || y != other.y;
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}
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bool operator<(const Vec2& other) const {
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return (x < other.x) || (x == other.x && y < other.y);
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}
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bool operator<=(const Vec2& other) const {
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return (x < other.x) || (x == other.x && y <= other.y);
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}
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bool operator>(const Vec2& other) const {
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return (x > other.x) || (x == other.x && y > other.y);
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}
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bool operator>=(const Vec2& other) const {
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return (x > other.x) || (x == other.x && y >= other.y);
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}
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Vec2 abs() const {
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return Vec2(std::abs(x), std::abs(y));
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}
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Vec2 floor() const {
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return Vec2(std::floor(x), std::floor(y));
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}
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Vec2 ceil() const {
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return Vec2(std::ceil(x), std::ceil(y));
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}
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Vec2 round() const {
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return Vec2(std::round(x), std::round(y));
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}
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Vec2 min(const Vec2& other) const {
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return Vec2(std::min(x, other.x), std::min(y, other.y));
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}
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Vec2 max(const Vec2& other) const {
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return Vec2(std::max(x, other.x), std::max(y, other.y));
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}
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Vec2 clamp(const Vec2& minVal, const Vec2& maxVal) const {
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return Vec2(
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std::clamp(x, minVal.x, maxVal.x),
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std::clamp(y, minVal.y, maxVal.y)
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);
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}
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Vec2 clamp(float minVal, float maxVal) const {
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return Vec2(
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std::clamp(x, minVal, maxVal),
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std::clamp(y, minVal, maxVal)
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);
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}
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bool isZero(float epsilon = 1e-10f) const {
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return std::abs(x) < epsilon && std::abs(y) < epsilon;
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}
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bool equals(const Vec2& other, float epsilon = 1e-10f) const {
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return std::abs(x - other.x) < epsilon &&
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std::abs(y - other.y) < epsilon;
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}
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friend Vec2 operator+(float scalar, const Vec2& vec) {
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return Vec2(scalar + vec.x, scalar + vec.y);
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}
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friend Vec2 operator-(float scalar, const Vec2& vec) {
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return Vec2(scalar - vec.x, scalar - vec.y);
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}
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friend Vec2 operator*(float scalar, const Vec2& vec) {
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return Vec2(scalar * vec.x, scalar * vec.y);
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}
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friend Vec2 operator/(float scalar, const Vec2& vec) {
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return Vec2(scalar / vec.x, scalar / vec.y);
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}
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Vec2 perpendicular() const {
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return Vec2(-y, x);
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}
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Vec2 reflect(const Vec2& normal) const {
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return *this - 2.0f * this->dot(normal) * normal;
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}
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Vec2 lerp(const Vec2& other, float t) const {
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t = std::clamp(t, 0.0f, 1.0f);
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return *this + (other - *this) * t;
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}
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Vec2 slerp(const Vec2& other, float t) const {
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t = std::clamp(t, 0.0f, 1.0f);
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float dot = this->dot(other);
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dot = std::clamp(dot, -1.0f, 1.0f);
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float theta = std::acos(dot) * t;
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Vec2 relative = other - *this * dot;
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relative = relative.normalized();
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return (*this * std::cos(theta)) + (relative * std::sin(theta));
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}
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Vec2 rotate(float angle) const {
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float cosA = std::cos(angle);
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float sinA = std::sin(angle);
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return Vec2(x * cosA - y * sinA, x * sinA + y * cosA);
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}
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float angle() const {
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return std::atan2(y, x);
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}
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float angleTo(const Vec2& other) const {
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return std::acos(this->dot(other) / (this->length() * other.length()));
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}
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float directionTo(const Vec2& other) const {
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Vec2 direction = other - *this;
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return direction.angle();
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}
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float& operator[](int index) {
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return (&x)[index];
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}
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const float& operator[](int index) const {
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return (&x)[index];
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}
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std::string toString() const {
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return "(" + std::to_string(x) + ", " + std::to_string(y) + ")";
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}
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std::ostream& operator<<(std::ostream& os) {
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os << toString();
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return os;
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}
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struct Hash {
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std::size_t operator()(const Vec2& v) const {
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return std::hash<float>()(v.x) ^ (std::hash<float>()(v.y) << 1);
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}
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};
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};
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// inline std::ostream& operator<<(std::ostream& os, const Vec2& vec) {
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// os << vec.toString();
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// return os;
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// }
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namespace std {
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template<>
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struct hash<Vec2> {
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size_t operator()(const Vec2& v) const {
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return hash<float>()(v.x) ^ (hash<float>()(v.y) << 1);
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}
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};
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}
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#endif |