From 2e6d8e1321c81e29a85f46c0ff3c0280e3f95b9f Mon Sep 17 00:00:00 2001
From: wwylele <wwylele@gmail.com>
Date: Sun, 11 Dec 2016 23:28:55 +0200
Subject: [PATCH] vector math: add implementation of Length and Normalize

---
 src/common/vector_math.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/common/vector_math.h b/src/common/vector_math.h
index a57d86d880..7ca8e15f56 100644
--- a/src/common/vector_math.h
+++ b/src/common/vector_math.h
@@ -186,6 +186,18 @@ Vec2<T> operator*(const V& f, const Vec2<T>& vec) {
 
 typedef Vec2<float> Vec2f;
 
+template <>
+inline float Vec2<float>::Length() const {
+    return std::sqrt(x * x + y * y);
+}
+
+template <>
+inline float Vec2<float>::Normalize() {
+    float length = Length();
+    *this /= length;
+    return length;
+}
+
 template <typename T>
 class Vec3 {
 public:
@@ -388,6 +400,13 @@ inline Vec3<float> Vec3<float>::Normalized() const {
     return *this / Length();
 }
 
+template <>
+inline float Vec3<float>::Normalize() {
+    float length = Length();
+    *this /= length;
+    return length;
+}
+
 typedef Vec3<float> Vec3f;
 
 template <typename T>