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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
#include <sal/types.h>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/basegfxdllapi.h>
#include <basegfx/utils/common.hxx>
namespace basegfx
{
class B2ITuple;
/** Base class for all Points/Vectors with two double values
This class provides all methods common to Point
and Vector classes which are derived from here.
@derive Use this class to implement Points or Vectors
which are based on two double values
*/
class SAL_WARN_UNUSED B2DTuple
{
protected:
double mfX;
double mfY;
public:
/** Create a 2D Tuple
The tuple is initialized to (0.0, 0.0)
*/
B2DTuple()
: mfX(0.0),
mfY(0.0)
{}
/** Create a 2D Tuple
@param fX
This parameter is used to initialize the X-coordinate
of the 2D Tuple.
@param fY
This parameter is used to initialize the Y-coordinate
of the 2D Tuple.
*/
B2DTuple(double fX, double fY)
: mfX( fX ),
mfY( fY )
{}
/** Create a copy of a 2D integer Tuple
@param rTup
The 2D Tuple which will be copied.
*/
BASEGFX_DLLPUBLIC explicit B2DTuple(const B2ITuple& rTup);
/// Get X-Coordinate of 2D Tuple
double getX() const
{
return mfX;
}
/// Get Y-Coordinate of 2D Tuple
double getY() const
{
return mfY;
}
/// Set X-Coordinate of 2D Tuple
void setX(double fX)
{
mfX = fX;
}
/// Set Y-Coordinate of 2D Tuple
void setY(double fY)
{
mfY = fY;
}
double get(Axis2D eAxis)
{
return eAxis == Axis2D::X ? getX() : getY();
}
void set(Axis2D eAxis, double fValue)
{
if (eAxis == Axis2D::X)
setX(fValue);
else
setY(fValue);
}
// comparators with tolerance
bool equalZero() const
{
return (this == &getEmptyTuple() ||
(fTools::equalZero(mfX) && fTools::equalZero(mfY)));
}
bool equal(const B2DTuple& rTup) const
{
return (
this == &rTup ||
(fTools::equal(mfX, rTup.mfX) &&
fTools::equal(mfY, rTup.mfY)));
}
// operators
B2DTuple& operator+=( const B2DTuple& rTup )
{
mfX += rTup.mfX;
mfY += rTup.mfY;
return *this;
}
B2DTuple& operator-=( const B2DTuple& rTup )
{
mfX -= rTup.mfX;
mfY -= rTup.mfY;
return *this;
}
B2DTuple& operator/=( const B2DTuple& rTup )
{
mfX /= rTup.mfX;
mfY /= rTup.mfY;
return *this;
}
B2DTuple& operator*=( const B2DTuple& rTup )
{
mfX *= rTup.mfX;
mfY *= rTup.mfY;
return *this;
}
B2DTuple& operator*=(double t)
{
mfX *= t;
mfY *= t;
return *this;
}
B2DTuple& operator/=(double t)
{
const double fVal(1.0 / t);
mfX *= fVal;
mfY *= fVal;
return *this;
}
B2DTuple operator-(void) const
{
return B2DTuple(-mfX, -mfY);
}
bool operator==( const B2DTuple& rTup ) const
{
return mfX == rTup.mfX && mfY == rTup.mfY;
}
bool operator!=( const B2DTuple& rTup ) const
{
return mfX != rTup.mfX || mfY != rTup.mfY;
}
BASEGFX_DLLPUBLIC static const B2DTuple& getEmptyTuple();
};
// external operators
inline B2DTuple absolute(const B2DTuple& rTup)
{
B2DTuple aAbs(
fabs(rTup.getX()),
fabs(rTup.getY()));
return aAbs;
}
inline B2DTuple interpolate(const B2DTuple& rOld1, const B2DTuple& rOld2, double t)
{
if(rOld1 == rOld2)
{
return rOld1;
}
else if(0.0 >= t)
{
return rOld1;
}
else if(1.0 <= t)
{
return rOld2;
}
else
{
return B2DTuple(
((rOld2.getX() - rOld1.getX()) * t) + rOld1.getX(),
((rOld2.getY() - rOld1.getY()) * t) + rOld1.getY());
}
}
inline B2DTuple average(const B2DTuple& rOld1, const B2DTuple& rOld2)
{
return B2DTuple(
rtl_math_approxEqual(rOld1.getX(), rOld2.getX()) ? rOld1.getX() : (rOld1.getX() + rOld2.getX()) * 0.5,
rtl_math_approxEqual(rOld1.getY(), rOld2.getY()) ? rOld1.getY() : (rOld1.getY() + rOld2.getY()) * 0.5);
}
inline B2DTuple operator+(const B2DTuple& rTupA, const B2DTuple& rTupB)
{
B2DTuple aSum(rTupA);
aSum += rTupB;
return aSum;
}
inline B2DTuple operator-(const B2DTuple& rTupA, const B2DTuple& rTupB)
{
B2DTuple aSub(rTupA);
aSub -= rTupB;
return aSub;
}
inline B2DTuple operator/(const B2DTuple& rTupA, const B2DTuple& rTupB)
{
B2DTuple aDiv(rTupA);
aDiv /= rTupB;
return aDiv;
}
inline B2DTuple operator*(const B2DTuple& rTupA, const B2DTuple& rTupB)
{
B2DTuple aMul(rTupA);
aMul *= rTupB;
return aMul;
}
inline B2DTuple operator*(const B2DTuple& rTup, double t)
{
B2DTuple aNew(rTup);
aNew *= t;
return aNew;
}
inline B2DTuple operator*(double t, const B2DTuple& rTup)
{
B2DTuple aNew(rTup);
aNew *= t;
return aNew;
}
inline B2DTuple operator/(const B2DTuple& rTup, double t)
{
B2DTuple aNew(rTup);
aNew /= t;
return aNew;
}
/** Round double to nearest integer for 2D tuple
@return the nearest integer for this tuple
*/
BASEGFX_DLLPUBLIC B2ITuple fround(const B2DTuple& rTup);
} // end of namespace basegfx
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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