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use std::ops::{Add, AddAssign, Div, DivAssign, Mul, MulAssign, Neg, Sub, SubAssign};
use crate::{Point, Size};
#[derive(Clone, Copy, Default, Debug, PartialEq)]
pub struct Vec2 {
pub x: f64,
pub y: f64,
}
impl Vec2 {
pub const ZERO: Vec2 = Vec2::new(0., 0.);
#[inline]
pub const fn new(x: f64, y: f64) -> Vec2 {
Vec2 { x, y }
}
#[inline]
pub fn to_point(self) -> Point {
Point::new(self.x, self.y)
}
#[inline]
pub fn to_size(self) -> Size {
Size::new(self.x, self.y)
}
#[inline]
pub fn dot(&self, other: Vec2) -> f64 {
self.x * other.x + self.y * other.y
}
#[inline]
pub fn cross(&self, other: Vec2) -> f64 {
self.x * other.y - self.y * other.x
}
#[inline]
pub fn hypot(&self) -> f64 {
self.x.hypot(self.y)
}
#[inline]
pub fn hypot2(&self) -> f64 {
self.dot(*self)
}
#[inline]
pub fn atan2(&self) -> f64 {
self.y.atan2(self.x)
}
#[inline]
pub fn from_angle(th: f64) -> Vec2 {
Vec2 {
x: th.cos(),
y: th.sin(),
}
}
#[inline]
pub fn lerp(&self, other: Vec2, t: f64) -> Vec2 {
*self + t * (other - *self)
}
#[inline]
pub fn normalize(self) -> Vec2 {
self / self.hypot()
}
}
impl From<(f64, f64)> for Vec2 {
#[inline]
fn from(v: (f64, f64)) -> Vec2 {
Vec2 { x: v.0, y: v.1 }
}
}
impl From<Vec2> for (f64, f64) {
#[inline]
fn from(v: Vec2) -> (f64, f64) {
(v.x, v.y)
}
}
impl Add for Vec2 {
type Output = Vec2;
#[inline]
fn add(self, other: Vec2) -> Vec2 {
Vec2 {
x: self.x + other.x,
y: self.y + other.y,
}
}
}
impl AddAssign for Vec2 {
#[inline]
fn add_assign(&mut self, other: Vec2) {
*self = Vec2 {
x: self.x + other.x,
y: self.y + other.y,
}
}
}
impl Sub for Vec2 {
type Output = Vec2;
#[inline]
fn sub(self, other: Vec2) -> Vec2 {
Vec2 {
x: self.x - other.x,
y: self.y - other.y,
}
}
}
impl SubAssign for Vec2 {
#[inline]
fn sub_assign(&mut self, other: Vec2) {
*self = Vec2 {
x: self.x - other.x,
y: self.y - other.y,
}
}
}
impl Mul<f64> for Vec2 {
type Output = Vec2;
#[inline]
fn mul(self, other: f64) -> Vec2 {
Vec2 {
x: self.x * other,
y: self.y * other,
}
}
}
impl MulAssign<f64> for Vec2 {
#[inline]
fn mul_assign(&mut self, other: f64) {
*self = Vec2 {
x: self.x * other,
y: self.y * other,
};
}
}
impl Mul<Vec2> for f64 {
type Output = Vec2;
#[inline]
fn mul(self, other: Vec2) -> Vec2 {
other * self
}
}
impl Div<f64> for Vec2 {
type Output = Vec2;
#[inline]
fn div(self, other: f64) -> Vec2 {
self * other.recip()
}
}
impl DivAssign<f64> for Vec2 {
#[inline]
fn div_assign(&mut self, other: f64) {
*self *= other.recip();
}
}
impl Neg for Vec2 {
type Output = Vec2;
#[inline]
fn neg(self) -> Vec2 {
Vec2 {
x: -self.x,
y: -self.y,
}
}
}
#[cfg(feature = "mint")]
impl From<Vec2> for mint::Vector2<f64> {
#[inline]
fn from(p: Vec2) -> mint::Vector2<f64> {
mint::Vector2 { x: p.x, y: p.y }
}
}
#[cfg(feature = "mint")]
impl From<mint::Vector2<f64>> for Vec2 {
#[inline]
fn from(p: mint::Vector2<f64>) -> Vec2 {
Vec2 { x: p.x, y: p.y }
}
}