xref: /trunk/main/basegfx/source/point/b3ipoint.cxx (revision cdf0e10c)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
29*cdf0e10cSrcweir #include "precompiled_basegfx.hxx"
30*cdf0e10cSrcweir #include <basegfx/point/b3ipoint.hxx>
31*cdf0e10cSrcweir #include <basegfx/matrix/b3dhommatrix.hxx>
32*cdf0e10cSrcweir #include <basegfx/numeric/ftools.hxx>
33*cdf0e10cSrcweir 
34*cdf0e10cSrcweir namespace basegfx
35*cdf0e10cSrcweir {
36*cdf0e10cSrcweir 	B3IPoint& B3IPoint::operator*=( const ::basegfx::B3DHomMatrix& rMat )
37*cdf0e10cSrcweir 	{
38*cdf0e10cSrcweir 		double fTempX(
39*cdf0e10cSrcweir 			rMat.get(0, 0) * mnX +
40*cdf0e10cSrcweir 			rMat.get(0, 1) * mnY +
41*cdf0e10cSrcweir 			rMat.get(0, 2) * mnZ +
42*cdf0e10cSrcweir 			rMat.get(0, 3));
43*cdf0e10cSrcweir 		double fTempY(
44*cdf0e10cSrcweir 			rMat.get(1, 0) * mnX +
45*cdf0e10cSrcweir 			rMat.get(1, 1) * mnY +
46*cdf0e10cSrcweir 			rMat.get(1, 2) * mnZ +
47*cdf0e10cSrcweir 			rMat.get(1, 3));
48*cdf0e10cSrcweir 		double fTempZ(
49*cdf0e10cSrcweir 			rMat.get(2, 0) * mnX +
50*cdf0e10cSrcweir 			rMat.get(2, 1) * mnY +
51*cdf0e10cSrcweir 			rMat.get(2, 2) * mnZ +
52*cdf0e10cSrcweir 			rMat.get(2, 3));
53*cdf0e10cSrcweir 
54*cdf0e10cSrcweir 		if(!rMat.isLastLineDefault())
55*cdf0e10cSrcweir 		{
56*cdf0e10cSrcweir 			const double fOne(1.0);
57*cdf0e10cSrcweir 			const double fTempM(
58*cdf0e10cSrcweir 				rMat.get(3, 0) * mnX +
59*cdf0e10cSrcweir 				rMat.get(3, 1) * mnY +
60*cdf0e10cSrcweir 				rMat.get(3, 2) * mnZ +
61*cdf0e10cSrcweir 				rMat.get(3, 3));
62*cdf0e10cSrcweir 
63*cdf0e10cSrcweir 			if(!fTools::equalZero(fTempM) && !fTools::equal(fOne, fTempM))
64*cdf0e10cSrcweir 			{
65*cdf0e10cSrcweir 				fTempX /= fTempM;
66*cdf0e10cSrcweir 				fTempY /= fTempM;
67*cdf0e10cSrcweir 				fTempZ /= fTempM;
68*cdf0e10cSrcweir 			}
69*cdf0e10cSrcweir 		}
70*cdf0e10cSrcweir 
71*cdf0e10cSrcweir 		mnX = fround(fTempX);
72*cdf0e10cSrcweir 		mnY = fround(fTempY);
73*cdf0e10cSrcweir 		mnZ = fround(fTempZ);
74*cdf0e10cSrcweir 
75*cdf0e10cSrcweir 		return *this;
76*cdf0e10cSrcweir 	}
77*cdf0e10cSrcweir } // end of namespace basegfx
78*cdf0e10cSrcweir 
79*cdf0e10cSrcweir // eof
80