Add `Orderable` implementation for vectors.

The `min`, `max` and `clamp` methods are component-wise.

src/tests/vec.rs

@@ -285,3 +285,15 @@ fn test_ord_vec3()
     assert!(!(Vec3::new(0.0, 3.0, 0.0) <= Vec3::new(1.0, 2.0, 1.0)));
     assert!(!(Vec3::new(0.0, 3.0, 0.0) >= Vec3::new(1.0, 2.0, 1.0)));
 }
+
+#[test]
+fn test_min_max_vec3()
+{
+    assert_eq!(Vec3::new(1, 2, 3).max(&Vec3::new(3, 2, 1)), Vec3::new(3, 2, 3));
+    assert_eq!(Vec3::new(1, 2, 3).min(&Vec3::new(3, 2, 1)), Vec3::new(1, 2, 1));
+    assert_eq!(
+        Vec3::new(0, 2, 4).clamp(
+            &Vec3::new(1, 1, 1), &Vec3::new(3, 3, 3)
+        ), Vec3::new(1, 2, 3)
+    );
+}

src/vec.rs

@@ -40,6 +40,7 @@ pub struct Vec1<N>
 
 new_impl!(Vec1, x)
 ord_impl!(Vec1, x)
+orderable_impl!(Vec1, x)
 vec_axis_impl!(Vec1, x)
 vec_cast_impl!(Vec1, x)
 indexable_impl!(Vec1, 1)
@@ -79,6 +80,7 @@ pub struct Vec2<N>
 
 new_impl!(Vec2, x, y)
 ord_impl!(Vec2, x, y)
+orderable_impl!(Vec2, x, y)
 vec_axis_impl!(Vec2, x, y)
 vec_cast_impl!(Vec2, x, y)
 indexable_impl!(Vec2, 2)
@@ -121,6 +123,7 @@ pub struct Vec3<N>
 
 new_impl!(Vec3, x, y, z)
 ord_impl!(Vec3, x, y, z)
+orderable_impl!(Vec3, x, y, z)
 vec_axis_impl!(Vec3, x, y, z)
 vec_cast_impl!(Vec3, x, y, z)
 indexable_impl!(Vec3, 3)
@@ -164,6 +167,7 @@ pub struct Vec4<N>
 
 new_impl!(Vec4, x, y, z, w)
 ord_impl!(Vec4, x, y, z, w)
+orderable_impl!(Vec4, x, y, z, w)
 vec_axis_impl!(Vec4, x, y, z, w)
 vec_cast_impl!(Vec4, x, y, z, w)
 indexable_impl!(Vec4, 4)
@@ -209,6 +213,7 @@ pub struct Vec5<N>
 
 new_impl!(Vec5, x, y, z, w, a)
 ord_impl!(Vec5, x, y, z, w, a)
+orderable_impl!(Vec5, x, y, z, w, a)
 vec_axis_impl!(Vec5, x, y, z, w, a)
 vec_cast_impl!(Vec5, x, y, z, w, a)
 indexable_impl!(Vec5, 5)
@@ -256,6 +261,7 @@ pub struct Vec6<N>
 
 new_impl!(Vec6, x, y, z, w, a, b)
 ord_impl!(Vec6, x, y, z, w, a, b)
+orderable_impl!(Vec6, x, y, z, w, a, b)
 vec_axis_impl!(Vec6, x, y, z, w, a, b)
 vec_cast_impl!(Vec6, x, y, z, w, a, b)
 indexable_impl!(Vec6, 6)

src/vec_macros.rs

@@ -40,6 +40,28 @@ macro_rules! ord_impl(
   )
 )
 
+macro_rules! orderable_impl(
+  ($t: ident, $comp0: ident $(,$compN: ident)*) => (
+    impl<N: Orderable> Orderable for $t<N>
+    {
+      #[inline]
+      fn max(&self, other: &$t<N>) -> $t<N>
+      { $t::new(self.$comp0.max(&other.$comp0) $(, self.$compN.max(&other.$compN))*) }
+
+      #[inline]
+      fn min(&self, other: &$t<N>) -> $t<N>
+      { $t::new(self.$comp0.min(&other.$comp0) $(, self.$compN.min(&other.$compN))*) }
+
+      #[inline]
+      fn clamp(&self, min: &$t<N>, max: &$t<N>) -> $t<N>
+      {
+          $t::new(self.$comp0.clamp(&min.$comp0, &max.$comp0)
+                  $(, self.$compN.clamp(&min.$comp0, &max.$comp0))*)
+      }
+    }
+  )
+)
+
 macro_rules! vec_axis_impl(
   ($t: ident, $comp0: ident $(,$compN: ident)*) => (
     impl<N: Zero + One> $t<N>