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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /ksvg/impl/libs/libtext2path/src/Affine.cpp
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/*
+ Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org>
+ This file is part of the KDE project
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ aint with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+#include <math.h>
+
+#include "Point.h"
+#include "Affine.h"
+
+using namespace T2P;
+
+Affine::Affine()
+{
+ m_affine[0] = 1.0;
+ m_affine[1] = 0.0;
+ m_affine[2] = 0.0;
+ m_affine[3] = 1.0;
+ m_affine[4] = 0.0;
+ m_affine[5] = 0.0;
+}
+
+Affine::Affine(double affine[6])
+{
+ for(int i = 0; i < 6; i++)
+ m_affine[i] = affine[i];
+}
+
+Affine::Affine(const Affine &other)
+{
+ (*this) = other;
+}
+
+Affine::Affine(double m11, double m12, double m21, double m22, double dx, double dy)
+{
+ m_affine[0] = m11; m_affine[1] = m12; m_affine[2] = m21;
+ m_affine[3] = m22; m_affine[4] = dx; m_affine[5] = dy;
+}
+
+Affine::~Affine()
+{
+}
+
+Affine &Affine::operator*=(Affine &other)
+{
+ double d0 = m11() * other.m11() + m12() * other.m21();
+ double d1 = m11() * other.m12() + m12() * other.m22();
+ double d2 = m21() * other.m11() + m22() * other.m21();
+ double d3 = m21() * other.m12() + m22() * other.m22();
+ double d4 = dx() * other.m11() + dy() * other.m21() + other.dx();
+ double d5 = dx() * other.m12() + dy() * other.m22() + other.dy();
+
+ m_affine[0] = d0; m_affine[1] = d1; m_affine[2] = d2;
+ m_affine[3] = d3; m_affine[4] = d4; m_affine[5] = d5;
+
+ return *this;
+}
+
+Affine &Affine::operator=(const Affine &other)
+{
+ for(int i = 0; i < 6; i++)
+ m_affine[i] = other.m_affine[i];
+
+ return *this;
+}
+
+double &Affine::m11()
+{
+ return m_affine[0];
+}
+
+double &Affine::m12()
+{
+ return m_affine[1];
+}
+
+double &Affine::m21()
+{
+ return m_affine[2];
+}
+
+double &Affine::m22()
+{
+ return m_affine[3];
+}
+
+double &Affine::dx()
+{
+ return m_affine[4];
+}
+
+double &Affine::dy()
+{
+ return m_affine[5];
+}
+
+void Affine::scale(double s)
+{
+ scale(s, s);
+}
+
+void Affine::scale(double sx, double sy)
+{
+ m_affine[0] = sx;
+ m_affine[3] = sy;
+}
+
+void Affine::translate(const Point &point)
+{
+ m_affine[4] += point.x();
+ m_affine[5] += point.y();
+}
+
+void Affine::translate(double tx, double ty)
+{
+ m_affine[4] += tx * m_affine[0] + ty * m_affine[2];
+ m_affine[5] += tx * m_affine[1] + ty * m_affine[3];
+}
+
+void Affine::rotate(double angle)
+{
+ double sina = sin(angle);
+ double cosa = cos(angle);
+
+ double tm11 = cosa * m_affine[0] + sina * m_affine[2];
+ double tm12 = cosa * m_affine[1] + sina * m_affine[3];
+ double tm21 = -sina * m_affine[0] + cosa * m_affine[2];
+ double tm22 = -sina * m_affine[1] + cosa * m_affine[3];
+
+ m_affine[0] = tm11; m_affine[1] = tm12;
+ m_affine[2] = tm21; m_affine[3] = tm22;
+}
+
+void Affine::rotateAround(double angle, const Point &point)
+{
+ translate(point);
+ rotate(angle);
+ translate(point.invert());
+}
+
+void Affine::rotateAround(double angle, double cx, double cy)
+{
+ translate(-cx, -cy);
+ rotate(angle);
+ translate(cx, cy);
+}
+
+Point Affine::mapPoint(const Point &p) const
+{
+ return Point(p.x() * m_affine[0] + p.y() * m_affine[2] + m_affine[4],
+ p.x() * m_affine[1] + p.y() * m_affine[3] + m_affine[5]);
+}
+
+double *Affine::data()
+{
+ return m_affine;
+}
+
+// vim:ts=4:noet