xref: /aoo42x/main/basegfx/source/point/b3dpoint.cxx (revision 09dbbe93)
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5  * distributed with this work for additional information
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8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
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11  *   http://www.apache.org/licenses/LICENSE-2.0
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16  * KIND, either express or implied.  See the License for the
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18  * under the License.
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20  *************************************************************/
21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_basegfx.hxx"
26 #include <basegfx/point/b3dpoint.hxx>
27 #include <basegfx/matrix/b3dhommatrix.hxx>
28 #include <basegfx/numeric/ftools.hxx>
29 
30 namespace basegfx
31 {
operator *=(const::basegfx::B3DHomMatrix & rMat)32 	B3DPoint& B3DPoint::operator*=( const ::basegfx::B3DHomMatrix& rMat )
33 	{
34 		double fTempX(
35 			rMat.get(0, 0) * mfX +
36 			rMat.get(0, 1) * mfY +
37 			rMat.get(0, 2) * mfZ +
38 			rMat.get(0, 3));
39 		double fTempY(
40 			rMat.get(1, 0) * mfX +
41 			rMat.get(1, 1) * mfY +
42 			rMat.get(1, 2) * mfZ +
43 			rMat.get(1, 3));
44 		double fTempZ(
45 			rMat.get(2, 0) * mfX +
46 			rMat.get(2, 1) * mfY +
47 			rMat.get(2, 2) * mfZ +
48 			rMat.get(2, 3));
49 
50 		if(!rMat.isLastLineDefault())
51 		{
52 			const double fOne(1.0);
53 			const double fTempM(
54 				rMat.get(3, 0) * mfX +
55 				rMat.get(3, 1) * mfY +
56 				rMat.get(3, 2) * mfZ +
57 				rMat.get(3, 3));
58 
59 			if(!fTools::equalZero(fTempM) && !fTools::equal(fOne, fTempM))
60 			{
61 				fTempX /= fTempM;
62 				fTempY /= fTempM;
63 				fTempZ /= fTempM;
64 			}
65 		}
66 
67 		mfX = fTempX;
68 		mfY = fTempY;
69 		mfZ = fTempZ;
70 
71 		return *this;
72 	}
73 
operator *(const::basegfx::B3DHomMatrix & rMat,const B3DPoint & rPoint)74 	B3DPoint operator*( const ::basegfx::B3DHomMatrix& rMat, const B3DPoint& rPoint )
75 	{
76 		B3DPoint aRes( rPoint );
77 		return aRes *= rMat;
78 	}
79 } // end of namespace basegfx
80 
81 // eof
82