Completed Vector3 vectors

Former-commit-id: 73c16102c22fe1d01b9b9411aa3e1bf82949542c

include/Nazara/Math/Vector3.inl

@@ -111,6 +111,18 @@ T NzVector3<T>::GetSquaredLength() const
 	return x*x + y*y + z*z;
 }
 
+template<typename T>
+NzVector3<T>& NzVector3<T>::MakeBackward()
+{
+	return Set(F(0.0), F(0.0), F(1.0));
+}
+
+template<typename T>
+NzVector3<T>& NzVector3<T>::MakeDown()
+{
+	return Set(F(0.0), F(-1.0), F(0.0));
+}
+
 template<typename T>
 NzVector3<T>& NzVector3<T>::MakeForward()
 {
@@ -123,6 +135,18 @@ NzVector3<T>& NzVector3<T>::MakeLeft()
 	return Set(F(-1.0), F(0.0), F(0.0));
 }
 
+template<typename T>
+NzVector3<T>& NzVector3<T>::MakeRight()
+{
+	return Set(F(1.0), F(0.0), F(0.0));
+}
+
+template<typename T>
+NzVector3<T>& NzVector3<T>::MakeUnit()
+{
+	return Set(F(1.0), F(1.0), F(1.0));
+}
+
 template<typename T>
 NzVector3<T>& NzVector3<T>::MakeUnitX()
 {
@@ -526,6 +550,24 @@ T NzVector3<T>::DotProduct(const NzVector3& vec1, const NzVector3& vec2)
 	return vec1.DotProduct(vec2);
 }
 
+template<typename T>
+NzVector3<T> NzVector3<T>::Backward()
+{
+	NzVector3 vector;
+	vector.MakeBackward();
+
+	return vector;
+}
+
+template<typename T>
+NzVector3<T> NzVector3<T>::Down()
+{
+	NzVector3 vector;
+	vector.MakeDown();
+
+	return vector;
+}
+
 template<typename T>
 NzVector3<T> NzVector3<T>::Forward()
 {
@@ -556,6 +598,24 @@ NzVector3<T> NzVector3<T>::Normalize(const NzVector3& vec)
 	return vec.GetNormal();
 }
 
+template<typename T>
+NzVector3<T> NzVector3<T>::Right()
+{
+	NzVector3 vector;
+	vector.MakeRight();
+
+	return vector;
+}
+
+template<typename T>
+NzVector3<T> NzVector3<T>::Unit()
+{
+	NzVector3 vector;
+	vector.MakeUnit();
+
+	return vector;
+}
+
 template<typename T>
 NzVector3<T> NzVector3<T>::UnitX()
 {