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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
class Matrix
{
public:
Matrix()
: Matrix(1, 0, 0, 1, 0, 0)
{
}
Matrix(const Matrix& other)
: Matrix(other.ma, other.mb, other.mc, other.md, other.me, other.mf)
{
}
Matrix(double da, double db, double dc, double dd, double de, double df)
: ma(da)
, mb(db)
, mc(dc)
, md(dd)
, me(de)
, mf(df)
{
}
const Matrix& operator=(const Matrix& other)
{
ma = other.ma;
mb = other.mb;
mc = other.mc;
md = other.md;
me = other.me;
mf = other.mf;
return *this;
}
double get(sal_uInt16 nRow, sal_uInt16 nColumn) const
{
if (nRow == 0)
{
if (nColumn == 0)
return v00;
else if (nColumn == 1)
return v01;
else if (nColumn == 2)
return v02;
}
else if (nRow == 1)
{
if (nColumn == 0)
return v10;
else if (nColumn == 1)
return v11;
else if (nColumn == 2)
return v12;
}
return 0.0;
}
double a() const { return ma; }
double b() const { return mb; }
double c() const { return mc; }
double d() const { return md; }
double e() const { return me; }
double f() const { return mf; }
/// Multiply this * other.
void Concatinate(const Matrix& other)
{
ma = ma * other.ma + mb * other.mc;
mb = ma * other.mb + mb * other.md;
mc = mc * other.ma + md * other.mc;
md = mc * other.mb + md * other.md;
me = me * other.ma + mf * other.mc + other.me;
mf = me * other.mb + mf * other.md + other.mf;
}
/// Transform the point (x, y) by this Matrix.
template <typename T> void Transform(T& x, T& y)
{
x = ma * x + mc * y + me;
y = mb * x + md * y + mf;
}
/// Transform the rectangle (left, right, top, bottom) by this Matrix.
template <typename T> void Transform(T& left, T& right, T& top, T& bottom)
{
T leftTopX = left;
T leftTopY = top;
Transform(leftTopX, leftTopY);
T leftBottomX = left;
T leftBottomY = bottom;
Transform(leftBottomX, leftBottomY);
T rightTopX = right;
T rightTopY = top;
Transform(rightTopX, rightTopY);
T rightBottomX = right;
T rightBottomY = bottom;
Transform(rightBottomX, rightBottomY);
left = std::min(leftTopX, leftBottomX);
right = std::max(rightTopX, rightBottomX);
if (top > bottom)
top = std::max(leftTopY, rightTopY);
else
top = std::min(leftTopY, rightTopY);
if (top > bottom)
bottom = std::max(leftBottomY, rightBottomY);
else
bottom = std::min(leftBottomY, rightBottomY);
}
std::string toString() const
{
std::ostringstream oss;
oss << '(' << ma << ", " << mb << ", " << mc << ", " << md << ", " << me << ", " << mf
<< ')';
return oss.str();
}
private:
union {
struct
{
double ma;
double mb;
double mc;
double md;
double me;
double mf;
};
struct
{
double v00;
double v10;
double v01;
double v11;
double v02;
double v12;
};
};
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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