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c8d6e69756
flash vectorial graphics in a layer git-svn-id: svn://dyne.org/rastasoft/freej/freej@621 383723c8-4afa-0310-b8a8-b1afb83214fc
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
/////////////////////////////////////////////////////////////
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// Flash Plugin and Player
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// Copyright (C) 1998,1999 Olivier Debon
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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///////////////////////////////////////////////////////////////
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// Author : Olivier Debon <odebon@club-internet.fr>
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//
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#include "matrix.h"
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#ifdef RCSID
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static char *rcsid = "$Id: matrix.cc,v 1.1.1.1 2004/06/04 21:16:55 tgc Exp $";
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#endif
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Matrix::Matrix()
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{
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a = 1.0;
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d = 1.0;
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b = c = 0.0;
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tx = ty = 0;
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}
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Matrix Matrix::operator*(Matrix m)
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{
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Matrix mat;
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mat.a = this->a * m.a + this->b * m.c;
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mat.b = this->a * m.b + this->b * m.d;
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mat.c = this->c * m.a + this->d * m.c;
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mat.d = this->c * m.b + this->d * m.d;
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mat.tx = this->getX(m.tx,m.ty);
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mat.ty = this->getY(m.tx,m.ty);
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return mat;
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}
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Matrix Matrix::invert()
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{
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Matrix mat;
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float det;
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det = a*d-b*c;
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mat.a = d/det;
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mat.b = -b/det;
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mat.c = -c/det;
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mat.d = a/det;
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mat.tx = - (long)(mat.a * tx + mat.b * ty);
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mat.ty = - (long)(mat.c * tx + mat.d * ty);
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return mat;
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}
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