diff options
Diffstat (limited to 'rand/src/distributions/unit_sphere.rs')
| -rw-r--r-- | rand/src/distributions/unit_sphere.rs | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/rand/src/distributions/unit_sphere.rs b/rand/src/distributions/unit_sphere.rs index 37de88b..188f48c 100644 --- a/rand/src/distributions/unit_sphere.rs +++ b/rand/src/distributions/unit_sphere.rs @@ -6,27 +6,20 @@ // option. This file may not be copied, modified, or distributed // except according to those terms. -use Rng; -use distributions::{Distribution, Uniform}; +#![allow(deprecated)] +#![allow(clippy::all)] + +use crate::Rng; +use crate::distributions::{Distribution, Uniform}; /// Samples uniformly from the surface of the unit sphere in three dimensions. /// /// Implemented via a method by Marsaglia[^1]. /// -/// -/// # Example -/// -/// ``` -/// use rand::distributions::{UnitSphereSurface, Distribution}; -/// -/// let sphere = UnitSphereSurface::new(); -/// let v = sphere.sample(&mut rand::thread_rng()); -/// println!("{:?} is from the unit sphere surface.", v) -/// ``` -/// /// [^1]: Marsaglia, George (1972). [*Choosing a Point from the Surface of a /// Sphere.*](https://doi.org/10.1214/aoms/1177692644) /// Ann. Math. Statist. 43, no. 2, 645--646. +#[deprecated(since="0.7.0", note="moved to rand_distr crate")] #[derive(Clone, Copy, Debug)] pub struct UnitSphereSurface; @@ -56,7 +49,7 @@ impl Distribution<[f64; 3]> for UnitSphereSurface { #[cfg(test)] mod tests { - use distributions::Distribution; + use crate::distributions::Distribution; use super::UnitSphereSurface; /// Assert that two numbers are almost equal to each other. @@ -77,7 +70,7 @@ mod tests { #[test] fn norm() { - let mut rng = ::test::rng(1); + let mut rng = crate::test::rng(1); let dist = UnitSphereSurface::new(); for _ in 0..1000 { let x = dist.sample(&mut rng); @@ -87,13 +80,17 @@ mod tests { #[test] fn value_stability() { - let mut rng = ::test::rng(2); - let dist = UnitSphereSurface::new(); - assert_eq!(dist.sample(&mut rng), - [-0.24950027180862533, -0.7552572587896719, 0.6060825747478084]); - assert_eq!(dist.sample(&mut rng), - [0.47604534507233487, -0.797200864987207, -0.3712837328763685]); - assert_eq!(dist.sample(&mut rng), - [0.9795722330927367, 0.18692349236651176, 0.07414747571708524]); + let mut rng = crate::test::rng(2); + let expected = [ + [0.03247542860231647, -0.7830477442152738, 0.6211131755296027], + [-0.09978440840914075, 0.9706650829833128, -0.21875184231323952], + [0.2735582468624679, 0.9435374242279655, -0.1868234852870203], + ]; + let samples = [ + UnitSphereSurface.sample(&mut rng), + UnitSphereSurface.sample(&mut rng), + UnitSphereSurface.sample(&mut rng), + ]; + assert_eq!(samples, expected); } } |