2 files changed, 23 insertions, 8 deletions

diff --git a/src/math/axis.cc b/src/math/axis.cc
index 402b2f6..8273469 100644
--- a/src/math/axis.cc
+++ b/src/math/axis.cc
@@ -84,10 +84,10 @@ void Axis::change_roll(const float angle)
 /* notes:
 	http://mathworld.wolfram.com/RotationFormula.html
 */
-void Axis::rotate(Vector3f const &normal, float angle)
+void Axis::rotate(Vector3f const &normal, float rad)
 {
-	float cosa = cosf(angle);
-	float sina = sinf(angle);
+	float cosa = cosf(rad);
+	float sina = sinf(rad);
 
 	for (size_t i = 0; i < 3; i++) {
 		axis_vector[i] =
diff --git a/src/math/axis.h b/src/math/axis.h
index 0ece016..c22568c 100644
--- a/src/math/axis.h
+++ b/src/math/axis.h
@@ -52,17 +52,32 @@ public:
 
 	const Axis operator*(const Axis &other) const;
 
-	/// change direction, rotate around up vector (positive is left)
+	/**
+	 * @brief change axis direction angle
+	 * rotate around axis up vector (positive is left)
+	 * @param angle angle in degrees
+	 **/
 	void change_direction(const float angle);
 
-	/// change pitch, rotate around left vector (positive is up)
+	/**
+	 * @brief change axis pitch angle
+	 * rotate around left vector (positive is up)
+	 * @param angle angle in degrees
+	 **/
 	void change_pitch(const float angle);
 
-	/// change roll, rotate around forward vector (positive is left)
+	/**
+	 * @brief change axis roll angle
+	 * rotate around forward vector (positive is left)
+	 * @param angle angle in degrees
+	 **/
 	void change_roll(const float angle);
 
-	/// rotation about an arbitrary axis
-	void rotate(const Vector3f & normal, const float angle);
+	/**
+	 * @brief rotation about an arbitrary vector
+	 * @param rad angle in radians
+	 **/
+	void rotate(const Vector3f & normal, const float rad);
 
 	/// return the transpose of this matrix
 	const Axis transpose() const;