LibreOffice Module basegfx (master) 1
b3dpoint.cxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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11 * Licensed to the Apache Software Foundation (ASF) under one or more
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18 */
19
23
24namespace basegfx
25{
26 B3DPoint& B3DPoint::operator*=( const ::basegfx::B3DHomMatrix& rMat )
27 {
28 double fTempX(
29 rMat.get(0, 0) * mfX +
30 rMat.get(0, 1) * mfY +
31 rMat.get(0, 2) * mfZ +
32 rMat.get(0, 3));
33 double fTempY(
34 rMat.get(1, 0) * mfX +
35 rMat.get(1, 1) * mfY +
36 rMat.get(1, 2) * mfZ +
37 rMat.get(1, 3));
38 double fTempZ(
39 rMat.get(2, 0) * mfX +
40 rMat.get(2, 1) * mfY +
41 rMat.get(2, 2) * mfZ +
42 rMat.get(2, 3));
43
44 if(!rMat.isLastLineDefault())
45 {
46 const double fOne(1.0);
47 const double fTempM(
48 rMat.get(3, 0) * mfX +
49 rMat.get(3, 1) * mfY +
50 rMat.get(3, 2) * mfZ +
51 rMat.get(3, 3));
52
53 if(!fTools::equalZero(fTempM) && !fTools::equal(fOne, fTempM))
54 {
55 fTempX /= fTempM;
56 fTempY /= fTempM;
57 fTempZ /= fTempM;
58 }
59 }
60
61 mfX = fTempX;
62 mfY = fTempY;
63 mfZ = fTempZ;
64
65 return *this;
66 }
67
68 B3DPoint operator*( const ::basegfx::B3DHomMatrix& rMat, const B3DPoint& rPoint )
69 {
70 B3DPoint aRes( rPoint );
71 aRes *= rMat;
72 return aRes;
73 }
74} // end of namespace basegfx
75
76/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Base Point class with three double values.
Definition: b3dpoint.hxx:38
B3DPoint & operator*=(const B3DPoint &rPnt)
*=operator to allow usage from B3DPoint, too
Definition: b3dpoint.hxx:74
bool equalZero(const T &rfVal)
Compare against small value.
Definition: ftools.hxx:156
bool equal(T const &rfValA, T const &rfValB)
Definition: ftools.hxx:169
B2DPoint operator*(const ::basegfx::B2DHomMatrix &rMat, const B2DPoint &rPoint)
Definition: b2dpoint.cxx:43