more 3D changes

3 files changed, 22 insertions, 2 deletions

diff --git a/src/math/axis.cc b/src/math/axis.cc
index cbca99b..6f9710b 100644
--- a/src/math/axis.cc
+++ b/src/math/axis.cc
@@ -74,6 +74,18 @@ void Axis::change_roll(const float angle) {
 	axis_vector[1].assign(up);
 }
 
+/*
+Axis const Axis::transpose()
+{
+	Axis` t;
+
+	for (size_t i = 0; i < 3; i++)
+		for (size_t j = 0; j < 3; j++)
+			t.axis_vector[j][i] = axis_vector[j][i];
+	return t;
+}
+*/
+
 // write an axis to a std::ostream
 std::ostream &operator<<(std::ostream & os, Axis const & axis)
 {
diff --git a/src/math/vector3f.cc b/src/math/vector3f.cc
index 51d0385..d5173bb 100644
--- a/src/math/vector3f.cc
+++ b/src/math/vector3f.cc
@@ -14,9 +14,9 @@ namespace math
 {
 
 Vector3f::Vector3f() :
-		x(coord[0]), y(coord[1]), z(coord[2])
+	x(coord[0]), y(coord[1]), z(coord[2])
 {
-	assign(0,0,0);
+	clear();
 }
 
 Vector3f::Vector3f(const Vector3f &other)  :
@@ -35,6 +35,11 @@ Vector3f::~Vector3f()
 {
 }
 
+void Vector3f::clear()
+{
+	memset(coord, 0, sizeof(coord));
+}
+
 void Vector3f::assign(const float vx, const float vy, const float vz)
 {
 	coord[0] = vx;
diff --git a/src/math/vector3f.h b/src/math/vector3f.h
index ddb9e38..1b4028f 100644
--- a/src/math/vector3f.h
+++ b/src/math/vector3f.h
@@ -44,6 +44,9 @@ public:
 	~Vector3f();
 
 	/* -- Assignment operators -- */
+	/// assign (0, 0, 0)
+	void clear();
+
 	/// assignment
 	void assign(const float x, const float y, const float z);