basegfx/source/point/b3dpoint.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_basegfx.hxx"
  33 #include <basegfx/point/b3dpoint.hxx>
  34 #include <basegfx/matrix/b3dhommatrix.hxx>
  35 #include <basegfx/numeric/ftools.hxx>
  36
  37 namespace basegfx
  38 {
  39     B3DPoint& B3DPoint::operator*=( const ::basegfx::B3DHomMatrix& rMat )
  40     {
  41         double fTempX(
  42             rMat.get(0, 0) * mfX +
  43             rMat.get(0, 1) * mfY +
  44             rMat.get(0, 2) * mfZ +
  45             rMat.get(0, 3));
  46         double fTempY(
  47             rMat.get(1, 0) * mfX +
  48             rMat.get(1, 1) * mfY +
  49             rMat.get(1, 2) * mfZ +
  50             rMat.get(1, 3));
  51         double fTempZ(
  52             rMat.get(2, 0) * mfX +
  53             rMat.get(2, 1) * mfY +
  54             rMat.get(2, 2) * mfZ +
  55             rMat.get(2, 3));
  56
  57         if(!rMat.isLastLineDefault())
  58         {
  59             const double fOne(1.0);
  60             const double fTempM(
  61                 rMat.get(3, 0) * mfX +
  62                 rMat.get(3, 1) * mfY +
  63                 rMat.get(3, 2) * mfZ +
  64                 rMat.get(3, 3));
  65
  66             if(!fTools::equalZero(fTempM) && !fTools::equal(fOne, fTempM))
  67             {
  68                 fTempX /= fTempM;
  69                 fTempY /= fTempM;
  70                 fTempZ /= fTempM;
  71             }
  72         }
  73
  74         mfX = fTempX;
  75         mfY = fTempY;
  76         mfZ = fTempZ;
  77
  78         return *this;
  79     }
  80
  81     B3DPoint operator*( const ::basegfx::B3DHomMatrix& rMat, const B3DPoint& rPoint )
  82     {
  83         B3DPoint aRes( rPoint );
  84         return aRes *= rMat;
  85     }
  86 } // end of namespace basegfx
  87
  88 // eof