/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
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*
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#include <basegfx/vector/b3dvector.hxx>
#include <basegfx/matrix/b3dhommatrix.hxx>
namespace basegfx
{
B3DVector& B3DVector::normalize()
{
double fLen(std::hypot(mnX, mnY, mnZ));
if (!::basegfx::fTools::equalZero(fLen))
{
const double fOne(1 .0 );
if (!::basegfx::fTools::equal(fOne, fLen))
{
mnX /= fLen;
mnY /= fLen;
mnZ /= fLen;
}
}
else
{
mnX = 0 .0 ;
mnY = 0 .0 ;
mnZ = 0 .0 ;
}
return *this ;
}
B3DVector B3DVector::getPerpendicular(const B3DVector& rNormalizedVec) const
{
B3DVector aNew = cross(*this , rNormalizedVec);
aNew.normalize();
return aNew;
}
B3DVector& B3DVector::operator *=( const ::basegfx::B3DHomMatrix& rMat )
{
const double fTempX( rMat.get(0 ,0 )*mnX + rMat.get(0 ,1 )*mnY + rMat.get(0 ,2 )*mnZ );
const double fTempY( rMat.get(1 ,0 )*mnX + rMat.get(1 ,1 )*mnY + rMat.get(1 ,2 )*mnZ );
const double fTempZ( rMat.get(2 ,0 )*mnX + rMat.get(2 ,1 )*mnY + rMat.get(2 ,2 )*mnZ );
mnX = fTempX;
mnY = fTempY;
mnZ = fTempZ;
return *this ;
}
B3DVector operator *( const ::basegfx::B3DHomMatrix& rMat, const B3DVector& rVec )
{
B3DVector aRes( rVec );
aRes *= rMat;
return aRes;
}
bool areParallel( const B3DVector& rVecA, const B3DVector& rVecB )
{
// i think fastest is to compare relations, need no square or division
if (!fTools::equal(rVecA.getX() * rVecB.getY(), rVecA.getY() * rVecB.getX()))
return false ;
if (!fTools::equal(rVecA.getX() * rVecB.getZ(), rVecA.getZ() * rVecB.getX()))
return false ;
return fTools::equal(rVecA.getY() * rVecB.getZ(), rVecA.getZ() * rVecB.getY());
}
} // end of namespace basegfx
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Messung V0.5 in Prozent C=93 H=94 G=93
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-28)
¤
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