From 00dbbd5ce2f2b7c65e13589424263ba32cd068f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Wed, 29 Dec 2010 21:34:09 +0100
Subject: [PATCH] Optimization: using dot product for computing vector length.

---
 src/Math/Vector.h | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/Math/Vector.h b/src/Math/Vector.h
index e5af334d4..96ed4e9b4 100644
--- a/src/Math/Vector.h
+++ b/src/Math/Vector.h
@@ -159,12 +159,8 @@ template<class T, size_t size> class Vector {
         }
 
         /** @brief Vector length */
-        T length() const {
-            T out(0);
-            for(size_t i = 0; i != size; ++i)
-                out += pow(at(i), 2);
-
-            return sqrt(out);
+        inline T length() const {
+            return sqrt(operator*(*this));
         }
 
         /** @brief Normalized vector (of length 1) */