From ac3663d05da4e236d02620ae98d5a7e6882bc802 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 23 Nov 2008 22:12:02 +0000
Subject: math::Axis multiplication

---
 src/math/axis.cc | 9 +++++++++
 src/math/axis.h  | 2 ++
 2 files changed, 11 insertions(+)

(limited to 'src/math')

diff --git a/src/math/axis.cc b/src/math/axis.cc
index 3c11de1..f7a1eec 100644
--- a/src/math/axis.cc
+++ b/src/math/axis.cc
@@ -107,6 +107,15 @@ Axis Axis::transpose() const
 	return t;
 }
 
+Axis Axis::operator*(const Axis &other)
+{
+	Axis t;
+	for (size_t i = 0; i < 3; i++)
+		t.axis_vector[i] = (*this) * other.axis_vector[i];
+
+	return t;
+}
+
 // write an axis to a std::ostream
 std::ostream &operator<<(std::ostream & os, Axis const & axis)
 {
diff --git a/src/math/axis.h b/src/math/axis.h
index 38c68de..3268d60 100644
--- a/src/math/axis.h
+++ b/src/math/axis.h
@@ -49,6 +49,8 @@ public:
 	}
 	
 	Axis & operator=(const Axis & other);
+
+	Axis operator*(const Axis &other);
 	
 	/// change direction, rotate around up vector (positive is left)
 	void change_direction(const float angle);
-- 
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