From a4b36e6d1e20b5036d1ed7cf9f61a48dbbf77812 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 27 Apr 2008 13:08:12 +0000
Subject: 3D flight

---
 src/math/matrix4f.cc | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 src/math/matrix4f.cc

(limited to 'src/math/matrix4f.cc')

diff --git a/src/math/matrix4f.cc b/src/math/matrix4f.cc
new file mode 100644
index 0000000..d73b12e
--- /dev/null
+++ b/src/math/matrix4f.cc
@@ -0,0 +1,79 @@
+/*
+   math/matrix4f.cc
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+// project headers
+#include "math/matrix4f.h"
+
+// C++ headers
+#include <cmath>
+
+namespace math
+{
+
+Matrix4f::Matrix4f()
+{
+	clear();
+}
+
+Matrix4f::Matrix4f(const Matrix4f & other)
+{
+	assign(other);
+}
+
+Matrix4f::Matrix4f(const Axis & axis)
+{
+	assign(axis);
+}
+
+void Matrix4f::clear()
+{
+	memset(matrix, 0, sizeof(matrix));
+}
+
+void Matrix4f::unity()
+{
+	memset(matrix, 0, sizeof(matrix));
+	for (int i=0; i <4; i++)
+		matrix[i][i] = 1;
+}
+
+void Matrix4f::assign(const Matrix4f & other)
+{
+	memcpy(matrix, other.matrix, sizeof(matrix));
+}
+
+void Matrix4f::assign(const Axis & axis)
+{
+	memset(matrix, 0, sizeof(matrix));
+	for (int i=0; i < 3; i++) {
+		memcpy(&matrix[i][0], axis[i].ptr(), sizeof(float) * 3);
+	}
+	matrix[3][3] = 1;
+}
+
+Matrix4f & Matrix4f::operator=(const Matrix4f &other)
+{
+	assign(other);
+	return(*this);
+}
+	
+Matrix4f & Matrix4f::operator=(const Axis & axis)
+{
+	assign(axis);
+	return(*this);
+}
+
+Matrix4f const Matrix4f::transpose()
+{
+	Matrix4f t;
+
+	for (size_t i = 0; i < 4; i++)
+		for (size_t j = 0; j < 4; j++)
+			t.matrix[j][i] = matrix[i][j];
+	return t;
+}
+
+}
-- 
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