gfxmath_vec2/impls/norm/
norm.rs

1use crate::{Vec2, ops::Norm};
2
3/// ```
4/// use gfxmath_vec2::ops::Norm;
5/// use gfxmath_vec2::Vec2;
6/// 
7/// let a = Vec2::<f32>::new(3.0, 4.0);
8/// let an = a.norm().unwrap();
9/// 
10/// assert_eq!(3.0/5.0, an.x);
11/// assert_eq!(4.0/5.0, an.y);
12/// ```
13#[opimps::impl_uni_ops(Norm)]
14#[inline]
15fn norm(self: Vec2<f32>) -> Option<Vec2<f32>> {
16    let l = (self.x * self.x + self.y * self.y).sqrt();
17    if l == 0.0 { return None; }
18    Some(Vec2 { x: self.x / l, y: self.y / l })
19}
20
21/// ```
22/// use gfxmath_vec2::ops::Norm;
23/// use gfxmath_vec2::Vec2;
24/// 
25/// let a = Vec2::<f64>::new(3.0, 4.0);
26/// let an = a.norm().unwrap();
27/// 
28/// assert_eq!(3.0/5.0, an.x);
29/// assert_eq!(4.0/5.0, an.y);
30/// ```
31#[opimps::impl_uni_ops(Norm)]
32#[inline]
33fn norm(self: Vec2<f64>) -> Option<Vec2<f64>> {
34    let l = (self.x * self.x + self.y * self.y).sqrt();
35    if l == 0.0 { return None; }
36    Some(Vec2 { x: self.x / l, y: self.y / l })
37}