0032406: Configuration, CMake - DRAWEXE build fails on Linux with static libraries
[occt.git] / src / gp / gp_Elips2d.cxx
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b311480e 1// Copyright (c) 1995-1999 Matra Datavision
973c2be1 2// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 3//
973c2be1 4// This file is part of Open CASCADE Technology software library.
b311480e 5//
d5f74e42 6// This library is free software; you can redistribute it and/or modify it under
7// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 8// by the Free Software Foundation, with special exception defined in the file
9// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10// distribution for complete text of the license and disclaimer of any warranty.
b311480e 11//
973c2be1 12// Alternatively, this file may be used under the terms of Open CASCADE
13// commercial license or contractual agreement.
b311480e 14
7fd59977 15//Modif JCV 10/01/91
16
42cf5bc1 17#include <gp_Ax2d.hxx>
18#include <gp_Ax22d.hxx>
19#include <gp_Elips2d.hxx>
20#include <gp_Pnt2d.hxx>
21#include <gp_Trsf2d.hxx>
22#include <gp_Vec2d.hxx>
23#include <Standard_ConstructionError.hxx>
7fd59977 24
25void gp_Elips2d::Coefficients (Standard_Real& A,
26 Standard_Real& B,
27 Standard_Real& C,
28 Standard_Real& D,
29 Standard_Real& E,
30 Standard_Real& F) const
31{
32 Standard_Real DMin = minorRadius * minorRadius;
33 Standard_Real DMaj = majorRadius * majorRadius;
34 if (DMin <= gp::Resolution() && DMaj <= gp::Resolution()) {
35 A = B = C = D = E = F = 0.0;
36 }
37 else {
38 gp_Trsf2d T;
39 T.SetTransformation (pos.XAxis());
40 Standard_Real T11 = T.Value (1, 1);
41 Standard_Real T12 = T.Value (1, 2);
42 Standard_Real T13 = T.Value (1, 3);
43 if (DMin <= gp::Resolution()) {
44 A = T11 * T11; B = T12 * T12; C = T11 * T12;
45 D = T11 * T13; E = T12 * T13; F = T13 * T13 - DMaj;
46 }
47 else {
48 Standard_Real T21 = T.Value (2, 1);
49 Standard_Real T22 = T.Value (2, 2);
50 Standard_Real T23 = T.Value (2, 3);
51 A = (T11 * T11 / DMaj) + (T21 * T21 / DMin);
52 B = (T12 * T12 / DMaj) + (T22 * T22 / DMin);
53 C = (T11 * T12 / DMaj) + (T21 * T22 / DMin);
54 D = (T11 * T13 / DMaj) + (T21 * T23 / DMin);
55 E = (T12 * T13 / DMaj) + (T22 * T23 / DMin);
56 F = (T13 * T13 / DMaj) + (T23 * T23 / DMin) - 1.0;
57 }
58 }
59}
60
61void gp_Elips2d::Mirror (const gp_Pnt2d& P)
62{ pos.Mirror(P); }
63
64gp_Elips2d gp_Elips2d::Mirrored (const gp_Pnt2d& P) const
65{
66 gp_Elips2d E = *this;
67 E.pos.Mirror (P);
68 return E;
69}
70
71void gp_Elips2d::Mirror (const gp_Ax2d& A)
72{ pos.Mirror(A); }
73
74gp_Elips2d gp_Elips2d::Mirrored (const gp_Ax2d& A) const
75{
76 gp_Elips2d E = *this;
77 E.pos.Mirror (A);
78 return E;
79}
80