/////////////////////////////////////////////////////////////// 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 RCSIDstatic char *rcsid = "$Id: matrix.cc,v 1.6 1999/01/31 20:18:39 olivier Exp $";#endifMatrix::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;}