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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 <basegfx/tuple/b3dtuple.hxx>
#include <basegfx/basegfxdllapi.h>
namespace basegfx
{
class B3DHomMatrix;
/** Base Point class with three double values
This class derives all operators and common handling for
a 3D data class from B3DTuple. All necessary extensions
which are special for 3D Vectors are added here.
@see B3DTuple
*/
class SAL_WARN_UNUSED BASEGFX_DLLPUBLIC B3DVector : public ::basegfx::B3DTuple
{
public:
/** Create a 3D Vector
The vector is initialized to (0.0, 0.0, 0.0)
*/
B3DVector()
{}
/** Create a 3D Vector
@param fX
This parameter is used to initialize the X-coordinate
of the 3D Vector.
@param fY
This parameter is used to initialize the Y-coordinate
of the 3D Vector.
@param fZ
This parameter is used to initialize the Z-coordinate
of the 3D Vector.
*/
B3DVector(double fX, double fY, double fZ)
: B3DTuple(fX, fY, fZ)
{}
/** constructor with tuple to allow copy-constructing
from B3DTuple-based classes
*/
B3DVector(const ::basegfx::B3DTuple& rTuple)
: B3DTuple(rTuple)
{}
/** *=operator to allow usage from B3DVector, too
*/
B3DVector& operator*=( const B3DVector& rPnt )
{
mfX *= rPnt.mfX;
mfY *= rPnt.mfY;
mfZ *= rPnt.mfZ;
return *this;
}
/** *=operator to allow usage from B3DVector, too
*/
B3DVector& operator*=(double t)
{
mfX *= t;
mfY *= t;
mfZ *= t;
return *this;
}
/** assignment operator to allow assigning the results
of B3DTuple calculations
*/
B3DVector& operator=( const ::basegfx::B3DTuple& rVec )
{
mfX = rVec.getX();
mfY = rVec.getY();
mfZ = rVec.getZ();
return *this;
}
/** Calculate the length of this 3D Vector
@return The Length of the 3D Vector
*/
double getLength() const
{
double fLen(scalar(*this));
if((0.0 == fLen) || (1.0 == fLen))
return fLen;
return sqrt(fLen);
}
/** Calculate the length in the XZ-Plane for this 3D Vector
@return The XZ-Plane Length of the 3D Vector
*/
double getXZLength() const
{
double fLen((mfX * mfX) + (mfZ * mfZ)); // #i73040#
if((0.0 == fLen) || (1.0 == fLen))
return fLen;
return sqrt(fLen);
}
/** Calculate the length in the YZ-Plane for this 3D Vector
@return The YZ-Plane Length of the 3D Vector
*/
double getYZLength() const
{
double fLen((mfY * mfY) + (mfZ * mfZ));
if((0.0 == fLen) || (1.0 == fLen))
return fLen;
return sqrt(fLen);
}
/** Set the length of this 3D Vector
@param fLen
The to be achieved length of the 3D Vector
*/
B3DVector& setLength(double fLen)
{
double fLenNow(scalar(*this));
if(!::basegfx::fTools::equalZero(fLenNow))
{
const double fOne(1.0);
if(!::basegfx::fTools::equal(fOne, fLenNow))
{
fLen /= sqrt(fLenNow);
}
mfX *= fLen;
mfY *= fLen;
mfZ *= fLen;
}
return *this;
}
/** Normalize this 3D Vector
The length of the 3D Vector is set to 1.0
*/
B3DVector& normalize();
/** get a 3D Vector which is perpendicular to this and a given 3D Vector
@attention This only works if this and the given 3D Vector are
both normalized.
@param rNormalizedVec
A normalized 3D Vector.
@return
A 3D Vector perpendicular to this and the given one
*/
B3DVector getPerpendicular(const B3DVector& rNormalizedVec) const;
/** Calculate the Scalar product
This method calculates the Scalar product between this
and the given 3D Vector.
@param rVec
A second 3D Vector.
@return
The Scalar Product of two 3D Vectors
*/
double scalar(const B3DVector& rVec) const
{
return ((mfX * rVec.mfX) + (mfY * rVec.mfY) + (mfZ * rVec.mfZ));
}
/** Transform vector by given transformation matrix.
Since this is a vector, translational components of the
matrix are disregarded.
*/
B3DVector& operator*=( const B3DHomMatrix& rMat );
static const B3DVector& getEmptyVector()
{
return static_cast<const B3DVector&>( ::basegfx::B3DTuple::getEmptyTuple() );
}
};
// external operators
/** Test two vectors which need not to be normalized for parallelism
@param rVecA
The first 3D Vector
@param rVecB
The second 3D Vector
@return
bool if the two values are parallel. Also true if
one of the vectors is empty.
*/
BASEGFX_DLLPUBLIC bool areParallel( const B3DVector& rVecA, const B3DVector& rVecB );
/** Transform vector by given transformation matrix.
Since this is a vector, translational components of the
matrix are disregarded.
*/
BASEGFX_DLLPUBLIC B3DVector operator*( const B3DHomMatrix& rMat, const B3DVector& rVec );
/** Calculate the Cross Product of two 3D Vectors
@param rVecA
A first 3D Vector.
@param rVecB
A second 3D Vector.
@return
The Cross Product of both 3D Vectors
*/
inline B3DVector cross(const B3DVector& rVecA, const B3DVector& rVecB)
{
B3DVector aVec(
rVecA.getY() * rVecB.getZ() - rVecA.getZ() * rVecB.getY(),
rVecA.getZ() * rVecB.getX() - rVecA.getX() * rVecB.getZ(),
rVecA.getX() * rVecB.getY() - rVecA.getY() * rVecB.getX());
return aVec;
}
} // end of namespace basegfx
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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