From d48a644d5c9f3247bb8b3edc5e1e673f0ab99b1d Mon Sep 17 00:00:00 2001
From: sebcrozet <developer@crozet.re>
Date: Sun, 5 Apr 2020 16:35:26 +0200
Subject: [PATCH] Add missing implementatino of SimdValue for UnitQuaternion.

---
 src/geometry/quaternion_simba.rs | 45 +++++++++++++++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/src/geometry/quaternion_simba.rs b/src/geometry/quaternion_simba.rs
index 5bd3e2b5..0120defe 100755
--- a/src/geometry/quaternion_simba.rs
+++ b/src/geometry/quaternion_simba.rs
@@ -1,7 +1,7 @@
 use simba::simd::SimdValue;
 
 use crate::base::Vector4;
-use crate::geometry::Quaternion;
+use crate::geometry::{Quaternion, UnitQuaternion};
 use crate::{RealField, Scalar};
 
 impl<N: Scalar + SimdValue> SimdValue for Quaternion<N>
@@ -45,3 +45,46 @@ where N::Element: Scalar
         self.coords.select(cond, other.coords).into()
     }
 }
+
+impl<N: Scalar + SimdValue> SimdValue for UnitQuaternion<N>
+where N::Element: Scalar
+{
+    type Element = UnitQuaternion<N::Element>;
+    type SimdBool = N::SimdBool;
+
+    #[inline]
+    fn lanes() -> usize {
+        N::lanes()
+    }
+
+    #[inline]
+    fn splat(val: Self::Element) -> Self {
+        UnitQuaternion::new_unchecked(Quaternion::splat(val.into_inner()))
+    }
+
+    #[inline]
+    fn extract(&self, i: usize) -> Self::Element {
+        UnitQuaternion::new_unchecked(self.as_ref().extract(i))
+    }
+
+    #[inline]
+    unsafe fn extract_unchecked(&self, i: usize) -> Self::Element {
+        UnitQuaternion::new_unchecked(self.as_ref().extract_unchecked(i))
+    }
+
+    #[inline]
+    fn replace(&mut self, i: usize, val: Self::Element) {
+        self.as_mut_unchecked().replace(i, val.into_inner())
+    }
+
+    #[inline]
+    unsafe fn replace_unchecked(&mut self, i: usize, val: Self::Element) {
+        self.as_mut_unchecked()
+            .replace_unchecked(i, val.into_inner())
+    }
+
+    #[inline]
+    fn select(self, cond: Self::SimdBool, other: Self) -> Self {
+        UnitQuaternion::new_unchecked(self.into_inner().select(cond, other.into_inner()))
+    }
+}