From bf67f079e71ceba2da5391e56a95d2970e1dfe04 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Crozet?= <developer@crozet.re>
Date: Fri, 10 Oct 2014 21:24:18 +0200
Subject: [PATCH] Add a function `nalgebra::center(a, b)` that computes the
 center of two points.

---
 src/lib.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index cf10096a..1920f498 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -350,10 +350,17 @@ pub fn one<T: One>() -> T {
 
 /// Returns the trivial origin of an affine space.
 #[inline(always)]
-pub fn orig<T: Orig>() -> T {
+pub fn orig<P: Orig>() -> P {
     Orig::orig()
 }
 
+/// Returns the center of two points.
+#[inline]
+pub fn center<N: Float, P: FloatPnt<N, V>, V>(a: &P, b: &P) -> P {
+    let _2 = one::<N>() + one();
+    (*a + *b.as_vec()) / _2
+}
+
 /*
  * FloatPnt
  */