From 85c931520abc0fd0d416327062b35fcb5ba56320 Mon Sep 17 00:00:00 2001
From: Mara Bos <m-ou.se@m-ou.se>
Date: Tue, 16 Apr 2019 10:12:09 +0200
Subject: [PATCH] Implement Default for Quaternion and UnitQuaternion.

---
 src/geometry/quaternion.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/geometry/quaternion.rs b/src/geometry/quaternion.rs
index 40c085f2..5b126983 100755
--- a/src/geometry/quaternion.rs
+++ b/src/geometry/quaternion.rs
@@ -30,6 +30,14 @@ pub struct Quaternion<N: RealField> {
     pub coords: Vector4<N>,
 }
 
+impl<N: RealField> Default for Quaternion<N> {
+    fn default() -> Self {
+        Quaternion {
+            coords: Vector4::zeros()
+        }
+    }
+}
+
 #[cfg(feature = "abomonation-serialize")]
 impl<N: RealField> Abomonation for Quaternion<N>
 where Vector4<N>: Abomonation
@@ -1422,6 +1430,12 @@ impl<N: RealField> UnitQuaternion<N> {
     }
 }
 
+impl<N: RealField> Default for UnitQuaternion<N> {
+    fn default() -> Self {
+        Self::identity()
+    }
+}
+
 impl<N: RealField + fmt::Display> fmt::Display for UnitQuaternion<N> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         if let Some(axis) = self.axis() {