From eb50a747faaec8709eac75989bcac9c2da6f827c Mon Sep 17 00:00:00 2001
From: viktorljung <vilb12@student.bth.se>
Date: Wed, 2 Dec 2015 17:59:21 +0100
Subject: [PATCH] Added Hash for Vec2 Unordered_Map

---
 .../Engine/Rendering/Util/UnorderedMapVec2.h  | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 include/Engine/Rendering/Util/UnorderedMapVec2.h

diff --git a/include/Engine/Rendering/Util/UnorderedMapVec2.h b/include/Engine/Rendering/Util/UnorderedMapVec2.h
new file mode 100644
index 00000000..0247ac9d
--- /dev/null
+++ b/include/Engine/Rendering/Util/UnorderedMapVec2.h
@@ -0,0 +1,23 @@
+#ifndef UnorderedMapVec2_h__
+#define UnorderedMapVec2_h__
+
+#include <functional>
+#include <boost/functional/hash.hpp>
+#include <glm/vec2.hpp>
+
+template<>
+struct std::hash<glm::vec2>
+{
+    inline std::size_t operator()(const glm::vec2 &v) const
+    {  
+        return boost::hash<float>()(v.x) ^ boost::hash<float>()(v.y);
+    }
+
+    inline bool operator()(const glm::vec2& a, const glm::vec2& b)const
+    {
+        return a.x == b.x && a.y == b.y;
+    }
+
+};
+
+#endif
\ No newline at end of file