From aaca9349fdcb358b055acfbb19662d0ab1f98184 Mon Sep 17 00:00:00 2001
From: Lynix <Lynix680@gmail.com>
Date: Sun, 30 Sep 2012 23:11:43 +0200
Subject: [PATCH] Fixed Matrix4 equality comparison

Former-commit-id: cb1e21196c2053138a8d70bc09d39ecbf7b83ba8
---
 include/Nazara/Math/Matrix4.hpp |  6 +++++-
 include/Nazara/Math/Matrix4.inl | 22 ++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/include/Nazara/Math/Matrix4.hpp b/include/Nazara/Math/Matrix4.hpp
index a8b2cd5cc..51bdaf0ce 100644
--- a/include/Nazara/Math/Matrix4.hpp
+++ b/include/Nazara/Math/Matrix4.hpp
@@ -22,7 +22,8 @@ template<typename T> class NzVector2;
 template<typename T> class NzVector3;
 template<typename T> class NzVector4;
 
-template<typename T> class NzMatrix4
+template<typename T>
+class NzMatrix4
 {
 	public:
 		NzMatrix4();
@@ -104,6 +105,9 @@ template<typename T> class NzMatrix4
 		NzMatrix4& operator*=(const NzMatrix4& matrix);
 		NzMatrix4& operator*=(T scalar);
 
+		bool operator==(const NzMatrix4& mat) const;
+		bool operator!=(const NzMatrix4& mat) const;
+
 		static NzMatrix4 Concatenate(const NzMatrix4& m1, const NzMatrix4& m2);
 		static NzMatrix4 ConcatenateAffine(const NzMatrix4& m1, const NzMatrix4& m2);
 		static NzMatrix4 Identity();
diff --git a/include/Nazara/Math/Matrix4.inl b/include/Nazara/Math/Matrix4.inl
index 5dbad7f42..3d6d30f7c 100644
--- a/include/Nazara/Math/Matrix4.inl
+++ b/include/Nazara/Math/Matrix4.inl
@@ -724,6 +724,28 @@ NzMatrix4<T>& NzMatrix4<T>::operator*=(T scalar)
 	return *this;
 }
 
+template<typename T>
+bool NzMatrix4<T>::operator==(const NzMatrix4& mat) const
+{
+	if (!m_sharedMatrix)
+		return mat.m_sharedMatrix == nullptr;
+
+	if (!mat.m_sharedMatrix)
+		return false;
+
+	for (unsigned int i = 0; i < 16; ++i)
+		if (!NzNumberEquals((&m_sharedMatrix->m11)[i]))
+			return false;
+
+	return true;
+}
+
+template<typename T>
+bool NzMatrix4<T>::operator!=(const NzMatrix4& mat) const
+{
+	return !operator==(mat);
+}
+
 template<typename T>
 NzMatrix4<T> NzMatrix4<T>::Concatenate(const NzMatrix4& m1, const NzMatrix4& m2)
 {