1 files changed, 3 insertions, 0 deletions
diff --git a/src/math/axis.h b/src/math/axis.h
index d011675..1422564 100644
--- a/src/math/axis.h
+++ b/src/math/axis.h
@@ -48,6 +48,9 @@ public:
 	/// change roll, rotate around forward vector (positive is left)
 	void change_roll(const float angle);
 
+	/// rotation about an arbitrary axis
+	void rotate(Vector3f const &normal, float angle);
+
 private:
 	Vector3f		axis_vector[3];
 };