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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
/***************************************************************************
fpoint.cpp - description
-------------------
begin : Mit Jul 24 2002
copyright : (C) 2002 by Franz Schmid
email : Franz.Schmid@altmuehlnet.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "fpoint.h"
#include <QMatrix>
//Create transformed point
FPoint::FPoint(const double x, const double y, const double dx, const double dy, const double rot, const double sx, const double sy, const bool invert)
: xp(x), yp(y)
{
transform(dx,dy,rot,sx,sy,invert);
}
bool FPoint::operator==(const FPoint &rhs) const
{
return qAbs(xp-rhs.xp) < 1E-10 && qAbs(yp-rhs.yp) < 1E-10;
}
bool FPoint::operator!=(const FPoint &rhs) const
{
return qAbs(xp-rhs.xp) > 1E-10 || qAbs(yp-rhs.yp) > 1E-10;
}
void FPoint::transform(const double dx, const double dy, const double rot, const double sx, const double sy, const bool invert)
{
QMatrix ma;
ma.translate(dx, dy);
ma.scale(sx, sy);
ma.rotate(rot);
if (invert)
ma = ma.inverted();
//save new value as old one is used on next line
double newxp = ma.m11() * xp + ma.m21() * yp + ma.dx();
yp = ma.m22() * yp + ma.m12() * xp + ma.dy();
xp = newxp;
}
FPoint FPoint::transformPoint(const QMatrix& m, const bool invert) const
{
QMatrix ma;
if (invert)
ma = m.inverted();
else
ma = m;
QPointF p(xp, yp);
p = ma.map(p);
return FPoint(p.x(), p.y());
}
FPoint FPoint::transformPoint(const double dx, const double dy, const double rot, const double sx, const double sy, const bool invert) const
{
QMatrix ma;
ma.translate(dx, dy);
ma.scale(sx, sy);
ma.rotate(rot);
if (invert)
ma = ma.inverted();
double x = ma.m11() * xp + ma.m21() * yp + ma.dx();
double y = ma.m22() * yp + ma.m12() * xp + ma.dy();
return FPoint(x, y);
}
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