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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 .
*/
#ifndef INCLUDED_BASEGFX_VECTOR_B3IVECTOR_HXX
#define INCLUDED_BASEGFX_VECTOR_B3IVECTOR_HXX
#include <basegfx/tuple/b3ituple.hxx>
#include <basegfx/basegfxdllapi.h>
namespace basegfx
{
// predeclaration
class B3DHomMatrix;
/** Base Point class with three sal_Int32 values
This class derives all operators and common handling for
a 3D data class from B3ITuple. All necessary extensions
which are special for 3D Vectors are added here.
@see B3ITuple
*/
class BASEGFX_DLLPUBLIC B3IVector : public ::basegfx::B3ITuple
{
public:
/** Create a 3D Vector
The vector is initialized to (0, 0, 0)
*/
B3IVector()
: B3ITuple()
{}
/** Create a 3D Vector
@param nX
This parameter is used to initialize the X-coordinate
of the 3D Vector.
@param nY
This parameter is used to initialize the Y-coordinate
of the 3D Vector.
@param nZ
This parameter is used to initialize the Z-coordinate
of the 3D Vector.
*/
B3IVector(sal_Int32 nX, sal_Int32 nY, sal_Int32 nZ)
: B3ITuple(nX, nY, nZ)
{}
/** Create a copy of a 3D Vector
@param rVec
The 3D Vector which will be copied.
*/
B3IVector(const B3IVector& rVec)
: B3ITuple(rVec)
{}
/** constructor with tuple to allow copy-constructing
from B3ITuple-based classes
*/
B3IVector(const ::basegfx::B3ITuple& rTuple)
: B3ITuple(rTuple)
{}
~B3IVector()
{}
/** *=operator to allow usage from B3IVector, too
*/
B3IVector& operator*=( const B3IVector& rPnt )
{
mnX *= rPnt.mnX;
mnY *= rPnt.mnY;
mnZ *= rPnt.mnZ;
return *this;
}
/** *=operator to allow usage from B3IVector, too
*/
B3IVector& operator*=(sal_Int32 t)
{
mnX *= t;
mnY *= t;
mnZ *= t;
return *this;
}
/** assignment operator to allow assigning the results
of B3ITuple calculations
*/
B3IVector& operator=( const ::basegfx::B3ITuple& rVec )
{
mnX = rVec.getX();
mnY = rVec.getY();
mnZ = 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 == fLen) || (1.0 == fLen))
return fLen;
return sqrt(fLen);
}
/** Calculate the length in the XY-Plane for this 3D Vector
@return The XY-Plane Length of the 3D Vector
*/
double getXYLength() const
{
double fLen((mnX * mnX) + (mnY * mnY));
if((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((mnX * mnZ) + (mnY * mnZ));
if((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((mnY * mnY) + (mnZ * mnZ));
if((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
*/
B3IVector& 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);
}
mnX = fround(mnX*fLen);
mnY = fround(mnY*fLen);
mnZ = fround(mnZ*fLen);
}
return *this;
}
/** 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 B3IVector& rVec) const
{
return ((mnX * rVec.mnX) + (mnY * rVec.mnY) + (mnZ * rVec.mnZ));
}
/** Transform vector by given transformation matrix.
Since this is a vector, translational components of the
matrix are disregarded.
*/
B3IVector& operator*=( const B3DHomMatrix& rMat );
};
// external operators
/** Transform vector by given transformation matrix.
Since this is a vector, translational components of the
matrix are disregarded.
*/
BASEGFX_DLLPUBLIC B3IVector operator*( const B3DHomMatrix& rMat, const B3IVector& 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 B3IVector cross(const B3IVector& rVecA, const B3IVector& rVecB)
{
B3IVector 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
#endif // INCLUDED_BASEGFX_VECTOR_B3IVECTOR_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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