From 15318cad33835e4e2dc620d033e43cd930676cdd Mon Sep 17 00:00:00 2001
From: kergoth <kergoth>
Date: Fri, 25 Jan 2002 22:14:26 +0000
Subject: Initial revision

---
(limited to 'core/multimedia/opieplayer/libflash/matrix.cc')

diff --git a/core/multimedia/opieplayer/libflash/matrix.cc b/core/multimedia/opieplayer/libflash/matrix.cc
new file mode 100644
index 0000000..0d8c82c
--- a/dev/null
+++ b/core/multimedia/opieplayer/libflash/matrix.cc
@@ -0,0 +1,68 @@
+/////////////////////////////////////////////////////////////
+// Flash Plugin and Player
+// Copyright (C) 1998,1999 Olivier Debon
+// 
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+// 
+///////////////////////////////////////////////////////////////
+//  Author : Olivier Debon  <odebon@club-internet.fr>
+//  
+
+#include "matrix.h"
+
+#ifdef RCSID
+static char *rcsid = "$Id$";
+#endif
+
+Matrix::Matrix()
+{
+	a = 1.0;
+	d = 1.0;
+	b = c = 0.0;
+	tx = ty = 0;
+}
+
+Matrix Matrix::operator*(Matrix m)
+{
+	Matrix mat;
+
+	mat.a = this->a * m.a + this->b * m.c;
+	mat.b = this->a * m.b + this->b * m.d;
+	mat.c = this->c * m.a + this->d * m.c;
+	mat.d = this->c * m.b + this->d * m.d;
+
+	mat.tx = this->getX(m.tx,m.ty);
+	mat.ty = this->getY(m.tx,m.ty);
+
+	return mat;
+}
+
+Matrix Matrix::invert()
+{
+	Matrix mat;
+	float det;
+
+	det = a*d-b*c;
+
+	mat.a  = d/det;
+	mat.b  = -b/det;
+	mat.c  = -c/det;
+	mat.d  = a/det;
+
+	mat.tx = - (long)(mat.a * tx + mat.b * ty);
+	mat.ty = - (long)(mat.c * tx + mat.d * ty);
+
+	return mat;
+}
--
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