Merge pull request #130 from kmqwerty/feature/adding_Rotation_and_Rotate

adding OvMaths::FMatrix4::Rotation and OvMaths::FMatrix4::Rotate

Author: Adrien GIVRY

Sources/Overload/OvMaths/include/OvMaths/FMatrix4.h

@@ -16,8 +16,15 @@
 #include "OvMaths/FVector3.h"
 #include "OvMaths/FVector4.h"
 
+
 namespace OvMaths
 {
+
+	/**
+	* Forward declaration due to circular reference
+	*/
+	struct FQuaternion;
+
 	/**
 	* Mathematic representation of a 4x4 Matrix of floats
 	*/
@@ -341,6 +348,19 @@ namespace OvMaths
 		*/
 		static FMatrix4 Scale(const FMatrix4& p_matrix, const FVector3& p_scale);
 
+		/**
+		* Return rotation matrix from quaternion
+		* @param p_quaternion
+		*/
+		static FMatrix4 Rotation(const FQuaternion& p_quaternion);
+
+		/**
+		* Return rotate matrix in 3D on quaternion
+		* @param p_matrix
+		* @param p_quaternion
+		*/
+		static FMatrix4 Rotate(const FMatrix4& p_matrix, const FQuaternion& p_quaternion);
+
 		/**
 		* Return perspective matrix
 		* @param p_fov

Sources/Overload/OvMaths/include/OvMaths/FQuaternion.h

@@ -15,6 +15,7 @@
 
 namespace OvMaths
 {
+
 	/**
 	* Mathematic representation of a Quaternion with float precision
 	*/

Sources/Overload/OvMaths/src/OvMaths/FMatrix4.cpp

@@ -11,6 +11,7 @@
 
 #include "OvMaths/FMatrix4.h"
 #include "OvMaths/FVector3.h"
+#include "OvMaths/FQuaternion.h"
 
 const OvMaths::FMatrix4 OvMaths::FMatrix4::Identity = FMatrix4(1.f, 0.f, 0.f, 0.f,
 															   0.f, 1.f, 0.f, 0.f,
@@ -442,6 +443,16 @@ OvMaths::FMatrix4 OvMaths::FMatrix4::Scale(const FMatrix4& p_matrix, const FVect
 	return p_matrix * Scaling(p_scale);
 }
 
+OvMaths::FMatrix4 OvMaths::FMatrix4::Rotation(const FQuaternion& p_quaternion)
+{
+	return OvMaths::FQuaternion::ToMatrix4(p_quaternion);
+}
+
+OvMaths::FMatrix4 OvMaths::FMatrix4::Rotate(const FMatrix4& p_matrix, const FQuaternion& p_quaternion)
+{
+	return p_matrix * Rotation(p_quaternion);
+}
+
 OvMaths::FMatrix4 OvMaths::FMatrix4::CreatePerspective(const float p_fov, const float p_aspectRatio, const float p_zNear, const float p_zFar)
 {
 	const float tangent = tanf(p_fov / 2.0f * PI / 180.0f);