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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/tuple/Tuple3D.hxx>
namespace basegfx
{
class B3ITuple;
/** Base class for all Points/Vectors with three 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 three double values
*/
class SAL_WARN_UNUSED BASEGFX_DLLPUBLIC B3DTuple : public Tuple3D<double>
{
public:
/** Create a 3D Tuple
The tuple is initialized to (0.0, 0.0, 0.0)
*/
B3DTuple()
: Tuple3D(0.0, 0.0, 0.0)
{}
/** Create a 3D Tuple
@param fX
This parameter is used to initialize the X-coordinate
of the 3D Tuple.
@param fY
This parameter is used to initialize the Y-coordinate
of the 3D Tuple.
@param fZ
This parameter is used to initialize the Z-coordinate
of the 3D Tuple.
*/
B3DTuple(double fX, double fY, double fZ)
: Tuple3D(fX, fY, fZ)
{}
/// Array-access to 3D Tuple
const double& operator[] (int nPos) const
{
// Here, normally two if(...)'s should be used. In the assumption that
// both double members can be accessed as an array a shortcut is used here.
// if(0 == nPos) return mfX; if(1 == nPos) return mfY; return mfZ;
return *((&mfX) + nPos);
}
/// Array-access to 3D Tuple
double& operator[] (int nPos)
{
// Here, normally two if(...)'s should be used. In the assumption that
// both double members can be accessed as an array a shortcut is used here.
// if(0 == nPos) return mfX; if(1 == nPos) return mfY; return mfZ;
return *((&mfX) + nPos);
}
// comparators with tolerance
bool equalZero() const
{
return (this == &getEmptyTuple() ||
(::basegfx::fTools::equalZero(mfX)
&& ::basegfx::fTools::equalZero(mfY)
&& ::basegfx::fTools::equalZero(mfZ)));
}
bool equal(const B3DTuple& rTup) const
{
return (
this == &rTup ||
(::basegfx::fTools::equal(mfX, rTup.mfX) &&
::basegfx::fTools::equal(mfY, rTup.mfY) &&
::basegfx::fTools::equal(mfZ, rTup.mfZ)));
}
// operators
B3DTuple operator-(void) const
{
return B3DTuple(-mfX, -mfY, -mfZ);
}
bool operator==(const B3DTuple& rTup) const
{
return mfX == rTup.mfX && mfY == rTup.mfY && mfZ == rTup.mfZ;
}
bool operator!=(const B3DTuple& rTup) const { return !operator==(rTup); }
void correctValues(const double fCompareValue = 0.0)
{
if(0.0 == fCompareValue)
{
if(::basegfx::fTools::equalZero(mfX))
{
mfX = 0.0;
}
if(::basegfx::fTools::equalZero(mfY))
{
mfY = 0.0;
}
if(::basegfx::fTools::equalZero(mfZ))
{
mfZ = 0.0;
}
}
else
{
if(::basegfx::fTools::equal(mfX, fCompareValue))
{
mfX = fCompareValue;
}
if(::basegfx::fTools::equal(mfY, fCompareValue))
{
mfY = fCompareValue;
}
if(::basegfx::fTools::equal(mfZ, fCompareValue))
{
mfZ = fCompareValue;
}
}
}
static const B3DTuple& getEmptyTuple();
};
// external operators
inline B3DTuple interpolate(const B3DTuple& rOld1, const B3DTuple& rOld2, double t)
{
if(rOld1 == rOld2)
{
return rOld1;
}
else if(0.0 >= t)
{
return rOld1;
}
else if(1.0 <= t)
{
return rOld2;
}
else
{
return B3DTuple(
((rOld2.getX() - rOld1.getX()) * t) + rOld1.getX(),
((rOld2.getY() - rOld1.getY()) * t) + rOld1.getY(),
((rOld2.getZ() - rOld1.getZ()) * t) + rOld1.getZ());
}
}
inline B3DTuple average(const B3DTuple& rOld1, const B3DTuple& rOld2)
{
return B3DTuple(
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,
rtl_math_approxEqual(rOld1.getZ(), rOld2.getZ()) ? rOld1.getZ() : (rOld1.getZ() + rOld2.getZ()) * 0.5);
}
inline B3DTuple operator+(const B3DTuple& rTupA, const B3DTuple& rTupB)
{
B3DTuple aSum(rTupA);
aSum += rTupB;
return aSum;
}
inline B3DTuple operator-(const B3DTuple& rTupA, const B3DTuple& rTupB)
{
B3DTuple aSub(rTupA);
aSub -= rTupB;
return aSub;
}
inline B3DTuple operator*(const B3DTuple& rTupA, const B3DTuple& rTupB)
{
B3DTuple aMul(rTupA);
aMul *= rTupB;
return aMul;
}
inline B3DTuple operator*(const B3DTuple& rTup, double t)
{
B3DTuple aNew(rTup);
aNew *= t;
return aNew;
}
inline B3DTuple operator/(const B3DTuple& rTup, double t)
{
B3DTuple aNew(rTup);
aNew /= t;
return aNew;
}
/** Round double to nearest integer for 3D tuple
@return the nearest integer for this tuple
*/
BASEGFX_DLLPUBLIC B3ITuple fround(const B3DTuple& rTup);
} // end of namespace basegfx
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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