xref: /trunk/main/basegfx/source/point/b3ipoint.cxx (revision 09dbbe93)
1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_basegfx.hxx"
26 #include <basegfx/point/b3ipoint.hxx>
27 #include <basegfx/matrix/b3dhommatrix.hxx>
28 #include <basegfx/numeric/ftools.hxx>
29 
30 namespace basegfx
31 {
operator *=(const::basegfx::B3DHomMatrix & rMat)32 	B3IPoint& B3IPoint::operator*=( const ::basegfx::B3DHomMatrix& rMat )
33 	{
34 		double fTempX(
35 			rMat.get(0, 0) * mnX +
36 			rMat.get(0, 1) * mnY +
37 			rMat.get(0, 2) * mnZ +
38 			rMat.get(0, 3));
39 		double fTempY(
40 			rMat.get(1, 0) * mnX +
41 			rMat.get(1, 1) * mnY +
42 			rMat.get(1, 2) * mnZ +
43 			rMat.get(1, 3));
44 		double fTempZ(
45 			rMat.get(2, 0) * mnX +
46 			rMat.get(2, 1) * mnY +
47 			rMat.get(2, 2) * mnZ +
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) * mnX +
55 				rMat.get(3, 1) * mnY +
56 				rMat.get(3, 2) * mnZ +
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 		mnX = fround(fTempX);
68 		mnY = fround(fTempY);
69 		mnZ = fround(fTempZ);
70 
71 		return *this;
72 	}
73 } // end of namespace basegfx
74 
75 // eof
76