Update to rand 0.5.

Cargo.toml

@@ -26,11 +26,11 @@ debug = [ ]
 [dependencies]
 typenum        = "1.10"
 generic-array  = "0.11"
-rand           = { version = "0.4", default-features = false }
+rand           = { version = "0.5", default-features = false }
 num-traits     = { version = "0.2", default-features = false }
 num-complex    = { version = "0.2.0-git", git = "https://github.com/rust-num/num-complex", default-features = false }
-approx         = { version = "0.1", default-features = false }
-alga           = { version = "0.5", default-features = false }
+approx         = { version = "0.2", default-features = false }
+alga           = { version = "0.5", path = "../alga/alga", default-features = false }
 matrixmultiply = { version = "0.1", optional = true }
 serde          = { version = "1.0", optional = true }
 serde_derive   = { version = "1.0", optional = true }

src/base/construction.rs

@@ -4,7 +4,8 @@ use base::storage::Owned;
 use quickcheck::{Arbitrary, Gen};
 
 use num::{Bounded, One, Zero};
-use rand::{self, distributions::Sample, Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::{self, Rng};
 use std::iter;
 use typenum::{self, Cmp, Greater};
 
@@ -231,14 +232,14 @@ where
     #[cfg(feature = "std")]
     pub fn new_random_generic(nrows: R, ncols: C) -> Self
     where
-        N: Rand,
+        Standard: Distribution<N>,
     {
         Self::from_fn_generic(nrows, ncols, |_, _| rand::random())
     }
 
     /// Creates a matrix filled with random values from the given distribution.
     #[inline]
-    pub fn from_distribution_generic<Distr: Sample<N> + ?Sized, G: Rng>(
+    pub fn from_distribution_generic<Distr: Distribution<N> + ?Sized, G: Rng + ?Sized>(
         nrows: R,
         ncols: C,
         distribution: &mut Distr,
@@ -371,7 +372,7 @@ macro_rules! impl_constructors(
 
             /// Creates a matrix filled with random values from the given distribution.
             #[inline]
-            pub fn from_distribution<Distr: Sample<N> + ?Sized, G: Rng>(
+            pub fn from_distribution<Distr: Distribution<N> + ?Sized, G: Rng + ?Sized>(
                 $($args: usize,)*
                 distribution: &mut Distr,
                 rng: &mut G,
@@ -380,8 +381,10 @@ macro_rules! impl_constructors(
             }
         }
 
-        impl<N: Scalar + Rand, $($DimIdent: $DimBound, )*> MatrixMN<N $(, $Dims)*>
-            where DefaultAllocator: Allocator<N $(, $Dims)*> {
+        impl<N: Scalar, $($DimIdent: $DimBound, )*> MatrixMN<N $(, $Dims)*>
+            where
+            DefaultAllocator: Allocator<N $(, $Dims)*>,
+            Standard: Distribution<N> {
 
             /// Creates a matrix filled with random values.
             #[inline]
@@ -462,18 +465,17 @@ where
     }
 }
 
-impl<N: Scalar + Rand, R: Dim, C: Dim> Rand for MatrixMN<N, R, C>
+impl<N: Scalar, R: Dim, C: Dim> Distribution<MatrixMN<N, R, C>> for Standard
 where
     DefaultAllocator: Allocator<N, R, C>,
+    Standard: Distribution<N>,
 {
     #[inline]
-    fn rand<G: Rng>(rng: &mut G) -> Self {
+    fn sample<'a, G: Rng + ?Sized>(&self, rng: &'a mut G) -> MatrixMN<N, R, C> {
         let nrows = R::try_to_usize().unwrap_or(rng.gen_range(0, 10));
         let ncols = C::try_to_usize().unwrap_or(rng.gen_range(0, 10));
 
-        Self::from_fn_generic(R::from_usize(nrows), C::from_usize(ncols), |_, _| {
-            rng.gen()
-        })
+        MatrixMN::from_fn_generic(R::from_usize(nrows), C::from_usize(ncols), |_, _| rng.gen())
     }
 }
 

src/base/helper.rs

@@ -1,6 +1,7 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 /// Simple helper function for rejection sampling
 #[cfg(feature = "arbitrary")]
@@ -16,7 +17,10 @@ pub fn reject<G: Gen, F: FnMut(&T) -> bool, T: Arbitrary>(g: &mut G, f: F) -> T
 
 #[doc(hidden)]
 #[inline]
-pub fn reject_rand<G: Rng, F: FnMut(&T) -> bool, T: Rand>(g: &mut G, f: F) -> T {
+pub fn reject_rand<G: Rng + ?Sized, F: FnMut(&T) -> bool, T>(g: &mut G, f: F) -> T
+where
+    Standard: Distribution<T>,
+{
     use std::iter;
-    iter::repeat(()).map(|_| Rand::rand(g)).find(f).unwrap()
+    iter::repeat(()).map(|_| g.gen()).find(f).unwrap()
 }

src/geometry/isometry_construction.rs

@@ -1,20 +1,23 @@
 #[cfg(feature = "arbitrary")]
-use quickcheck::{Arbitrary, Gen};
-#[cfg(feature = "arbitrary")]
 use base::storage::Owned;
+#[cfg(feature = "arbitrary")]
+use quickcheck::{Arbitrary, Gen};
 
 use num::One;
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 use alga::general::Real;
 use alga::linear::Rotation as AlgaRotation;
 
-use base::{DefaultAllocator, Vector2, Vector3};
-use base::dimension::{DimName, U2, U3};
 use base::allocator::Allocator;
+use base::dimension::{DimName, U2, U3};
+use base::{DefaultAllocator, Vector2, Vector3};
 
-use geometry::{Isometry, Point, Point3, Rotation, Rotation2, Rotation3, Translation, UnitComplex,
-               UnitQuaternion};
+use geometry::{
+    Isometry, Point, Point3, Rotation, Rotation2, Rotation3, Translation, UnitComplex,
+    UnitQuaternion,
+};
 
 impl<N: Real, D: DimName, R: AlgaRotation<Point<N, D>>> Isometry<N, D, R>
 where
@@ -46,14 +49,15 @@ where
     }
 }
 
-impl<N: Real + Rand, D: DimName, R> Rand for Isometry<N, D, R>
+impl<N: Real, D: DimName, R> Distribution<Isometry<N, D, R>> for Standard
 where
-    R: AlgaRotation<Point<N, D>> + Rand,
+    R: AlgaRotation<Point<N, D>>,
+    Standard: Distribution<N> + Distribution<R>,
     DefaultAllocator: Allocator<N, D>,
 {
     #[inline]
-    fn rand<G: Rng>(rng: &mut G) -> Self {
-        Self::from_parts(rng.gen(), rng.gen())
+    fn sample<'a, G: Rng + ?Sized>(&self, rng: &'a mut G) -> Isometry<N, D, R> {
+        Isometry::from_parts(rng.gen(), rng.gen())
     }
 }
 

src/geometry/orthographic.rs

@@ -1,16 +1,17 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 #[cfg(feature = "serde-serialize")]
 use serde;
 use std::fmt;
 
 use alga::general::Real;
 
-use base::{Matrix4, Vector, Vector3};
 use base::dimension::U3;
-use base::storage::Storage;
 use base::helper;
+use base::storage::Storage;
+use base::{Matrix4, Vector, Vector3};
 
 use geometry::Point3;
 
@@ -310,16 +311,19 @@ impl<N: Real> Orthographic3<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for Orthographic3<N> {
-    fn rand<R: Rng>(r: &mut R) -> Self {
-        let left = Rand::rand(r);
+impl<N: Real> Distribution<Orthographic3<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
+    fn sample<R: Rng + ?Sized>(&self, r: &mut R) -> Orthographic3<N> {
+        let left = r.gen();
         let right = helper::reject_rand(r, |x: &N| *x > left);
-        let bottom = Rand::rand(r);
+        let bottom = r.gen();
         let top = helper::reject_rand(r, |x: &N| *x > bottom);
-        let znear = Rand::rand(r);
+        let znear = r.gen();
         let zfar = helper::reject_rand(r, |x: &N| *x > znear);
 
-        Self::new(left, right, bottom, top, znear, zfar)
+        Orthographic3::new(left, right, bottom, top, znear, zfar)
     }
 }
 

src/geometry/perspective.rs

@@ -1,6 +1,7 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 #[cfg(feature = "serde-serialize")]
 use serde;
@@ -8,10 +9,10 @@ use std::fmt;
 
 use alga::general::Real;
 
-use base::{Matrix4, Scalar, Vector, Vector3};
 use base::dimension::U3;
-use base::storage::Storage;
 use base::helper;
+use base::storage::Storage;
+use base::{Matrix4, Scalar, Vector, Vector3};
 
 use geometry::Point3;
 
@@ -245,13 +246,16 @@ impl<N: Real> Perspective3<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for Perspective3<N> {
-    fn rand<R: Rng>(r: &mut R) -> Self {
-        let znear = Rand::rand(r);
+impl<N: Real> Distribution<Perspective3<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
+    fn sample<'a, R: Rng + ?Sized>(&self, r: &'a mut R) -> Perspective3<N> {
+        let znear = r.gen();
         let zfar = helper::reject_rand(r, |&x: &N| !(x - znear).is_zero());
         let aspect = helper::reject_rand(r, |&x: &N| !x.is_zero());
 
-        Self::new(aspect, Rand::rand(r), znear, zfar)
+        Perspective3::new(aspect, r.gen(), znear, zfar)
     }
 }
 

src/geometry/point_construction.rs

@@ -1,13 +1,14 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 
-use rand::{Rand, Rng};
 use num::{Bounded, One, Zero};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 use alga::general::ClosedDiv;
-use base::{DefaultAllocator, Scalar, VectorN};
 use base::allocator::Allocator;
 use base::dimension::{DimName, DimNameAdd, DimNameSum, U1, U2, U3, U4, U5, U6};
+use base::{DefaultAllocator, Scalar, VectorN};
 
 use geometry::Point;
 
@@ -70,13 +71,14 @@ where
     }
 }
 
-impl<N: Scalar + Rand, D: DimName> Rand for Point<N, D>
+impl<N: Scalar, D: DimName> Distribution<Point<N, D>> for Standard
 where
     DefaultAllocator: Allocator<N, D>,
+    Standard: Distribution<N>,
 {
     #[inline]
-    fn rand<G: Rng>(rng: &mut G) -> Self {
-        Point::from_coordinates(rng.gen())
+    fn sample<'a, G: Rng + ?Sized>(&self, rng: &mut G) -> Point<N, D> {
+        Point::from_coordinates(rng.gen::<VectorN<N, D>>())
     }
 }
 

src/geometry/quaternion_construction.rs

@@ -1,18 +1,19 @@
 #[cfg(feature = "arbitrary")]
-use quickcheck::{Arbitrary, Gen};
+use base::dimension::U4;
 #[cfg(feature = "arbitrary")]
 use base::storage::Owned;
 #[cfg(feature = "arbitrary")]
-use base::dimension::U4;
+use quickcheck::{Arbitrary, Gen};
 
-use rand::{Rand, Rng};
 use num::{One, Zero};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 use alga::general::Real;
 
-use base::{Unit, Vector, Vector3, Vector4};
-use base::storage::Storage;
 use base::dimension::U3;
+use base::storage::Storage;
+use base::{Unit, Vector, Vector3, Vector4};
 
 use geometry::{Quaternion, Rotation, UnitQuaternion};
 
@@ -86,9 +87,12 @@ impl<N: Real> Zero for Quaternion<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for Quaternion<N> {
+impl<N: Real> Distribution<Quaternion<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
     #[inline]
-    fn rand<R: Rng>(rng: &mut R) -> Self {
+    fn sample<'a, R: Rng + ?Sized>(&self, rng: &'a mut R) -> Quaternion<N> {
         Quaternion::new(rng.gen(), rng.gen(), rng.gen(), rng.gen())
     }
 }
@@ -407,11 +411,13 @@ impl<N: Real> One for UnitQuaternion<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for UnitQuaternion<N> {
+impl<N: Real> Distribution<UnitQuaternion<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
     #[inline]
-    fn rand<R: Rng>(rng: &mut R) -> Self {
-        let axisangle = Vector3::rand(rng);
-        UnitQuaternion::from_scaled_axis(axisangle)
+    fn sample<'a, R: Rng + ?Sized>(&self, rng: &'a mut R) -> UnitQuaternion<N> {
+        UnitQuaternion::from_scaled_axis(rng.gen::<Vector3<N>>() * N::two_pi())
     }
 }
 

src/geometry/rotation_specialization.rs

@@ -1,16 +1,17 @@
 #[cfg(feature = "arbitrary")]
-use quickcheck::{Arbitrary, Gen};
-#[cfg(feature = "arbitrary")]
 use base::storage::Owned;
+#[cfg(feature = "arbitrary")]
+use quickcheck::{Arbitrary, Gen};
 
-use std::ops::Neg;
-use num::Zero;
-use rand::{Rand, Rng};
 use alga::general::Real;
+use num::Zero;
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
+use std::ops::Neg;
 
-use base::{MatrixN, Unit, Vector, Vector1, Vector3, VectorN};
 use base::dimension::{U1, U2, U3};
 use base::storage::Storage;
+use base::{MatrixN, Unit, Vector, Vector1, Vector3, VectorN};
 
 use geometry::{Rotation2, Rotation3, UnitComplex};
 
@@ -97,10 +98,13 @@ impl<N: Real> Rotation2<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for Rotation2<N> {
+impl<N: Real> Distribution<Rotation2<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
     #[inline]
-    fn rand<R: Rng>(rng: &mut R) -> Self {
-        Self::new(rng.gen())
+    fn sample<'a, R: Rng + ?Sized>(&self, rng: &'a mut R) -> Rotation2<N> {
+        Rotation2::new(rng.gen())
     }
 }
 
@@ -195,15 +199,19 @@ impl<N: Real> Rotation3<N> {
     pub fn to_euler_angles(&self) -> (N, N, N) {
         // Implementation informed by "Computing Euler angles from a rotation matrix", by Gregory G. Slabaugh
         //  http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.6578
-        if self[(2,0)].abs() != N::one() {
-            let yaw   = -self[(2,0)].asin();
-            let roll  = (self[(2,1)] / yaw.cos()).atan2(self[(2,2)] / yaw.cos());
-            let pitch = (self[(1,0)] / yaw.cos()).atan2(self[(0,0)] / yaw.cos());
+        if self[(2, 0)].abs() != N::one() {
+            let yaw = -self[(2, 0)].asin();
+            let roll = (self[(2, 1)] / yaw.cos()).atan2(self[(2, 2)] / yaw.cos());
+            let pitch = (self[(1, 0)] / yaw.cos()).atan2(self[(0, 0)] / yaw.cos());
             (roll, yaw, pitch)
-        } else if self[(2,0)] == -N::one() {
-            (self[(0,1)].atan2(self[(0,2)]), N::frac_pi_2(), N::zero())
+        } else if self[(2, 0)] == -N::one() {
+            (self[(0, 1)].atan2(self[(0, 2)]), N::frac_pi_2(), N::zero())
         } else {
-            (-self[(0,1)].atan2(-self[(0,2)]), -N::frac_pi_2(), N::zero())
+            (
+                -self[(0, 1)].atan2(-self[(0, 2)]),
+                -N::frac_pi_2(),
+                N::zero(),
+            )
         }
     }
 
@@ -228,15 +236,7 @@ impl<N: Real> Rotation3<N> {
         let yaxis = zaxis.cross(&xaxis).normalize();
 
         Self::from_matrix_unchecked(MatrixN::<N, U3>::new(
-            xaxis.x,
-            yaxis.x,
-            zaxis.x,
-            xaxis.y,
-            yaxis.y,
-            zaxis.y,
-            xaxis.z,
-            yaxis.z,
-            zaxis.z,
+            xaxis.x, yaxis.x, zaxis.x, xaxis.y, yaxis.y, zaxis.y, xaxis.z, yaxis.z, zaxis.z,
         ))
     }
 
@@ -382,10 +382,13 @@ impl<N: Real> Rotation3<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for Rotation3<N> {
+impl<N: Real> Distribution<Rotation3<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
     #[inline]
-    fn rand<R: Rng>(rng: &mut R) -> Self {
-        Self::new(VectorN::rand(rng))
+    fn sample<'a, R: Rng + ?Sized>(&self, rng: &mut R) -> Rotation3<N> {
+        Rotation3::new(rng.gen::<Vector3<N>>() * N::two_pi())
     }
 }
 

src/geometry/similarity_construction.rs

@@ -1,20 +1,23 @@
 #[cfg(feature = "arbitrary")]
-use quickcheck::{Arbitrary, Gen};
-#[cfg(feature = "arbitrary")]
 use base::storage::Owned;
+#[cfg(feature = "arbitrary")]
+use quickcheck::{Arbitrary, Gen};
 
 use num::One;
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 use alga::general::Real;
 use alga::linear::Rotation as AlgaRotation;
 
-use base::{DefaultAllocator, Vector2, Vector3};
-use base::dimension::{DimName, U2, U3};
 use base::allocator::Allocator;
+use base::dimension::{DimName, U2, U3};
+use base::{DefaultAllocator, Vector2, Vector3};
 
-use geometry::{Isometry, Point, Point3, Rotation2, Rotation3, Similarity, Translation,
-               UnitComplex, UnitQuaternion};
+use geometry::{
+    Isometry, Point, Point3, Rotation2, Rotation3, Similarity, Translation, UnitComplex,
+    UnitQuaternion,
+};
 
 impl<N: Real, D: DimName, R> Similarity<N, D, R>
 where
@@ -40,19 +43,20 @@ where
     }
 }
 
-impl<N: Real + Rand, D: DimName, R> Rand for Similarity<N, D, R>
+impl<N: Real, D: DimName, R> Distribution<Similarity<N, D, R>> for Standard
 where
-    R: AlgaRotation<Point<N, D>> + Rand,
+    R: AlgaRotation<Point<N, D>>,
     DefaultAllocator: Allocator<N, D>,
+    Standard: Distribution<N> + Distribution<R>,
 {
     #[inline]
-    fn rand<G: Rng>(rng: &mut G) -> Self {
+    fn sample<'a, G: Rng + ?Sized>(&self, rng: &mut G) -> Similarity<N, D, R> {
         let mut s = rng.gen();
         while relative_eq!(s, N::zero()) {
             s = rng.gen()
         }
 
-        Self::from_isometry(rng.gen(), s)
+        Similarity::from_isometry(rng.gen(), s)
     }
 }
 

src/geometry/translation_construction.rs

@@ -1,16 +1,17 @@
 #[cfg(feature = "arbitrary")]
-use quickcheck::{Arbitrary, Gen};
-#[cfg(feature = "arbitrary")]
 use base::storage::Owned;
+#[cfg(feature = "arbitrary")]
+use quickcheck::{Arbitrary, Gen};
 
 use num::{One, Zero};
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 use alga::general::ClosedAdd;
 
-use base::{DefaultAllocator, Scalar, VectorN};
-use base::dimension::{DimName, U1, U2, U3, U4, U5, U6};
 use base::allocator::Allocator;
+use base::dimension::{DimName, U1, U2, U3, U4, U5, U6};
+use base::{DefaultAllocator, Scalar, VectorN};
 
 use geometry::Translation;
 
@@ -35,13 +36,14 @@ where
     }
 }
 
-impl<N: Scalar + Rand, D: DimName> Rand for Translation<N, D>
+impl<N: Scalar, D: DimName> Distribution<Translation<N, D>> for Standard
 where
     DefaultAllocator: Allocator<N, D>,
+    Standard: Distribution<N>,
 {
     #[inline]
-    fn rand<G: Rng>(rng: &mut G) -> Self {
-        Self::from_vector(rng.gen())
+    fn sample<'a, G: Rng + ?Sized>(&self, rng: &'a mut G) -> Translation<N, D> {
+        Translation::from_vector(rng.gen::<VectorN<N, D>>())
     }
 }
 

src/geometry/unit_complex_construction.rs

@@ -3,7 +3,8 @@ use quickcheck::{Arbitrary, Gen};
 
 use num::One;
 use num_complex::Complex;
-use rand::{Rand, Rng};
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
 
 use alga::general::Real;
 use base::allocator::Allocator;
@@ -150,10 +151,13 @@ impl<N: Real> One for UnitComplex<N> {
     }
 }
 
-impl<N: Real + Rand> Rand for UnitComplex<N> {
+impl<N: Real> Distribution<UnitComplex<N>> for Standard
+where
+    Standard: Distribution<N>,
+{
     #[inline]
-    fn rand<R: Rng>(rng: &mut R) -> Self {
-        UnitComplex::from_angle(N::rand(rng))
+    fn sample<'a, R: Rng + ?Sized>(&self, rng: &mut R) -> UnitComplex<N> {
+        UnitComplex::from_angle(rng.gen() * N::two_pi())
     }
 }