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/**
* Yudit Unicode Editor Source File
*
* GNU Copyright (C) 1997-2023 Gaspar Sinai <gaspar@yudit.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* dated June 1991. See file COPYYING for details.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "SMatrix.h"
/**
* @author: Gaspar Sinai <gaspar@yudit.org>
* @version: 2000-04-23
*/
#include <stdio.h>
/**
* create a 2 d matrix
*/
SS_Matrix2D::SS_Matrix2D(void)
{
x0 = 1.0; y0 = 0.0; t0=0.0;
x1 = 0.0; y1 = 1.0; t1=0.0;
x2 = 0.0; y2 = 0.0; t2=1.0;
}
SS_Matrix2D::SS_Matrix2D (const SS_Matrix2D& m)
{
x0 = m.x0; y0 = m.y0; t0=m.t0;
x1 = m.x1; y1 = m.y1; t1=m.t1;
x2 = m.x2; y2 = m.y2; t2=m.t2;
}
SS_Matrix2D
SS_Matrix2D::operator= (const SS_Matrix2D& m)
{
x0 = m.x0; y0 = m.y0; t0=m.t0;
x1 = m.x1; y1 = m.y1; t1=m.t1;
x2 = m.x2; y2 = m.y2; t2=m.t2;
return *this;
}
bool
operator== (const SS_Matrix2D& m1, const SS_Matrix2D& m2)
{
return (m1.x0 == m2.x0 && m1.y0 == m2.y0 && m1.t0==m2.t0
&& m1.x1 == m2.x1 && m1.y1 == m2.y1 && m1.t1==m2.t1
&& m1.x2 == m2.x2 && m1.y2 == m2.y2 && m1.t2==m2.t2);
}
bool
operator< (const SS_Matrix2D& m1, const SS_Matrix2D& m2)
{
return (m1.x0 < m2.x0 && m1.y0 < m2.y0 && m1.t0<m2.t0
&& m1.x1 < m2.x1 && m1.y1 < m2.y1 && m1.t1<m2.t1
&& m1.x2 < m2.x2 && m1.y2 < m2.y2 && m1.t2<m2.t2);
}
bool
operator> (const SS_Matrix2D& m1, const SS_Matrix2D& m2)
{
return (m1.x0 > m2.x0 && m1.y0 > m2.y0 && m1.t0>m2.t0
&& m1.x1 > m2.x1 && m1.y1 > m2.y1 && m1.t1>m2.t1
&& m1.x2 > m2.x2 && m1.y2 > m2.y2 && m1.t2>m2.t2);
}
SS_Matrix2D
SS_Matrix2D::operator* (const SS_Matrix2D& m1) const
{
SS_Matrix2D r;
r.x0 = x0 * m1.x0 + y0 * m1.x1 + t0 * m1.x2;
r.x1 = x1 * m1.x0 + y1 * m1.x1 + t1 * m1.x2;
r.x2 = x2 * m1.x0 + y2 * m1.x1 + t2 * m1.x2;
r.y0 = x0 * m1.y0 + y0 * m1.y1 + t0 * m1.y2;
r.y1 = x1 * m1.y0 + y1 * m1.y1 + t1 * m1.y2;
r.y2 = x2 * m1.y0 + y2 * m1.y1 + t2 * m1.y2;
r.t0 = x0 * m1.t0 + y0 * m1.t1 + t0 * m1.t2;
r.t1 = x1 * m1.t0 + y1 * m1.t1 + t1 * m1.t2;
r.t2 = x2 * m1.t0 + y2 * m1.t1 + t2 * m1.t2;
return SS_Matrix2D (r);
}
SS_Matrix2D::~SS_Matrix2D()
{
}
/**
* TODO: not implemented
*/
void
SS_Matrix2D::rotate (double angle)
{
}
void
SS_Matrix2D::scale (double x, double y)
{
x0 = x0 * x;
y1 = y1 * y;
}
void
SS_Matrix2D::translate (double x, double y)
{
t0 = t0 + x;
t1 = t1 + y;
}
SS_Matrix2D
SS_Matrix2D::invert() const
{
SS_Matrix2D r;
/* FIXME: my det has always some problem. */
return SS_Matrix2D(r);
}
double
SS_Matrix2D::toX(double _x, double _y) const
{
return x0 * _x + y0 * _y + t0;
}
double
SS_Matrix2D::toY(double _x, double _y) const
{
return x1 * _x + y1 * _y + t1;
}
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