Adding code

include/J3ML/LinearAlgebra/EulerAngle.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <J3ML/LinearAlgebra/Vector3.h>
+
+namespace LinearAlgebra {
+
+// Essential Reading:
+// http://www.essentialmath.com/GDC2012/GDC2012_JMV_Rotations.pdf
+class EulerAngle {
+public:
+    EulerAngle();
+    EulerAngle(float pitch, float yaw, float roll);
+    EulerAngle(const Vector3& vec) : pitch(vec.x), yaw(vec.y), roll(vec.z) {}
+    static EulerAngle FromRadians(float radians);
+    static EulerAngle FromDegrees(float degrees);
+    /// TODO: Implement separate upper and lower bounds
+    /// Preserves internal value of euler angles, normalizes and clamps the output.
+    /// This does not solve gimbal lock!!!
+    float GetPitch(float pitch_limit) const;
+    float GetYaw(float yaw_limit)     const;
+    float GetRoll(float roll_limit)   const;
+
+    bool operator==(const EulerAngle& a) const;
+    void clamp();
+
+    // TODO: Euler Angles do not represent a vector, length doesn't apply, nor is this information meaningful for this data type.
+    // If you need a meaningful representation of length in 3d space, use a vector!!
+    [[nodiscard]] float length() const {
+        return 0;
+    }
+    // TODO: Implement
+    Vector3 unitVector() const;
+
+    EulerAngle movementAngle() const;
+public:
+    float pitch;
+    float yaw;
+    float roll;
+};
+
+}