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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: b3dvector.cxx,v $
*
* $Revision: 1.6 $
*
* last change: $Author: rt $ $Date: 2005-09-07 20:54:45 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef _BGFX_VECTOR_B3DVECTOR_HXX
#include <basegfx/vector/b3dvector.hxx>
#endif
#ifndef _BGFX_MATRIX_B3DHOMMATRIX_HXX
#include <basegfx/matrix/b3dhommatrix.hxx>
#endif
namespace basegfx
{
B3DVector& B3DVector::normalize()
{
double fLen(scalar(*this));
if(!::basegfx::fTools::equalZero(fLen))
{
const double fOne(1.0);
if(!::basegfx::fTools::equal(fOne, fLen))
{
fLen = sqrt(fLen);
if(!::basegfx::fTools::equalZero(fLen))
{
mfX /= fLen;
mfY /= fLen;
mfZ /= fLen;
}
}
}
return *this;
}
B3DVector B3DVector::getPerpendicular(const B3DVector& rNormalizedVec) const
{
B3DVector aNew(*this);
aNew = cross(aNew, rNormalizedVec);
aNew.normalize();
return aNew;
}
B3DVector B3DVector::getProjectionOnPlane(const B3DVector& rNormalizedPlane) const
{
B3DVector aNew(*this);
aNew = cross(aNew, rNormalizedPlane);
aNew = cross(aNew, rNormalizedPlane);
aNew.mfX = mfX - aNew.mfX;
aNew.mfY = mfY - aNew.mfY;
aNew.mfZ = mfZ - aNew.mfZ;
return aNew;
}
B3DVector& B3DVector::operator*=( const ::basegfx::B3DHomMatrix& rMat )
{
const double fTempX( rMat.get(0,0)*mfX + rMat.get(0,1)*mfY + rMat.get(0,2)*mfZ );
const double fTempY( rMat.get(1,0)*mfX + rMat.get(1,1)*mfY + rMat.get(1,2)*mfZ );
const double fTempZ( rMat.get(2,0)*mfX + rMat.get(2,1)*mfY + rMat.get(2,2)*mfZ );
mfX = fTempX;
mfY = fTempY;
mfZ = fTempZ;
return *this;
}
B3DVector operator*( const ::basegfx::B3DHomMatrix& rMat, const B3DVector& rVec )
{
B3DVector aRes( rVec );
return aRes*=rMat;
}
} // end of namespace basegfx
// eof
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