h3o/coord/
vec3d.rs

1use crate::math::mul_add;
2
3/// 3D floating-point vector.
4#[derive(Debug, Clone, Copy, PartialEq)]
5pub struct Vec3d {
6    /// `x` component.
7    pub x: f64,
8    /// `y` component.
9    pub y: f64,
10    /// `z` component.
11    pub z: f64,
12}
13
14impl Vec3d {
15    /// Initializes a new 3D vector with the specified component values.
16    pub const fn new(x: f64, y: f64, z: f64) -> Self {
17        Self { x, y, z }
18    }
19
20    /// Computes the square of the distance between two 3D coordinates.
21    pub fn distance(&self, other: &Self) -> f64 {
22        let x_diff = self.x - other.x;
23        let y_diff = self.y - other.y;
24        let z_diff = self.z - other.z;
25
26        mul_add(x_diff, x_diff, mul_add(y_diff, y_diff, z_diff * z_diff))
27    }
28}
29
30#[cfg(test)]
31#[path = "./vec3d_tests.rs"]
32mod tests;