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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include <basegfx/vector/b2ivector.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/numeric/ftools.hxx>
namespace basegfx
{
B2IVector& B2IVector::operator=( const ::basegfx::B2ITuple& rVec )
{
mnX = rVec.getX();
mnY = rVec.getY();
return *this;
}
double B2IVector::scalar( const B2IVector& rVec ) const
{
return((mnX * rVec.mnX) + (mnY * rVec.mnY));
}
B2IVector& B2IVector::operator*=( const B2DHomMatrix& rMat )
{
mnX = fround( rMat.get(0,0)*mnX +
rMat.get(0,1)*mnY );
mnY = fround( rMat.get(1,0)*mnX +
rMat.get(1,1)*mnY );
return *this;
}
B2IVector& B2IVector::setLength(double fLen)
{
double fLenNow(scalar(*this));
if(!::basegfx::fTools::equalZero(fLenNow))
{
const double fOne(10.0);
if(!::basegfx::fTools::equal(fOne, fLenNow))
{
fLen /= sqrt(fLenNow);
}
mnX = fround( mnX*fLen );
mnY = fround( mnY*fLen );
}
return *this;
}
bool areParallel( const B2IVector& rVecA, const B2IVector& rVecB )
{
double fVal(rVecA.getX() * rVecB.getY() - rVecA.getY() * rVecB.getX());
return ::basegfx::fTools::equalZero(fVal);
}
B2IVector operator*( const B2DHomMatrix& rMat, const B2IVector& rVec )
{
B2IVector aRes( rVec );
return aRes*=rMat;
}
} // end of namespace basegfx
// eof
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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