lights

2 files changed, 12 insertions, 1 deletions

diff --git a/src/math/axis.cc b/src/math/axis.cc
index 6f9710b..4d752bf 100644
--- a/src/math/axis.cc
+++ b/src/math/axis.cc
@@ -89,7 +89,9 @@ Axis const Axis::transpose()
 // write an axis to a std::ostream
 std::ostream &operator<<(std::ostream & os, Axis const & axis)
 {
-	os << axis.forward() << " " << axis.left() << " " << axis.up();
+	os << axis.forward() << " ";
+	os << axis.left() << " ";
+	os << axis.up();
 	return os;
 }
 
@@ -102,4 +104,10 @@ std::istream &operator>>(std::istream & is, Axis & axis)
 	return is;
 }
 
+// local-to-global coordinates
+Vector3f operator*(Axis const &axis, Vector3f const &vector)
+{
+	return (Vector3f(vector[0] * axis[0] + vector[1] * axis[1] + vector[2] * axis[2]));
+}
+
 }
diff --git a/src/math/axis.h b/src/math/axis.h
index 7e81d9a..d011675 100644
--- a/src/math/axis.h
+++ b/src/math/axis.h
@@ -58,6 +58,9 @@ std::ostream &operator<<(std::ostream & os, Axis const & axis);
 /// read an axis from a std::istream
 std::istream &operator>>(std::istream & is, Axis & axis);
 
+/// local-to-global coordinates
+Vector3f operator*(Axis const &axis, Vector3f const &vector);
+
 }
 
 #endif // __INCLUDED_MATH_AXIS_H__