1 // Copyright (c) 1995-1999 Matra Datavision
2 // Copyright (c) 1999-2014 OPEN CASCADE SAS
4 // This file is part of Open CASCADE Technology software library.
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
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.
12 // Alternatively, this file may be used under the terms of Open CASCADE
13 // commercial license or contractual agreement.
15 // LPA, JCV 07/92 passage sur C1.
16 // JCV 07/92 Introduction de la method Dump
17 // LBO 08/93 passage aux Ax3
22 #include <gp_Cylinder.hxx>
24 #include <gp_Trsf.hxx>
26 #include <Standard_ConstructionError.hxx>
28 void gp_Cylinder::Coefficients
29 (Standard_Real& A1, Standard_Real& A2, Standard_Real& A3,
30 Standard_Real& B1, Standard_Real& B2, Standard_Real& B3,
31 Standard_Real& C1, Standard_Real& C2, Standard_Real& C3, Standard_Real& D) const
33 // Dans le repere local du cylindre :
34 // X**2 + Y**2 - radius = 0.0
36 T.SetTransformation (pos);
37 Standard_Real T11 = T.Value (1, 1);
38 Standard_Real T12 = T.Value (1, 2);
39 Standard_Real T13 = T.Value (1, 3);
40 Standard_Real T14 = T.Value (1, 4);
41 Standard_Real T21 = T.Value (2, 1);
42 Standard_Real T22 = T.Value (2, 2);
43 Standard_Real T23 = T.Value (2, 3);
44 Standard_Real T24 = T.Value (2, 4);
46 A1 = T11 * T11 + T21 * T21;
47 A2 = T12 * T12 + T22 * T22;
48 A3 = T13 * T13 + T23 * T23;
49 B1 = T11 * T12 + T21 * T22;
50 B2 = T11 * T13 + T21 * T23;
51 B3 = T12 * T13 + T22 * T23;
52 C1 = T11 * T14 + T21 * T24;
53 C2 = T12 * T14 + T22 * T24;
54 C3 = T13 * T14 + T23 * T24;
55 D = T14 * T14 + T24 * T24 - radius * radius;
58 void gp_Cylinder::Mirror (const gp_Pnt& P)
61 gp_Cylinder gp_Cylinder::Mirrored (const gp_Pnt& P) const
63 gp_Cylinder C = *this;
68 void gp_Cylinder::Mirror (const gp_Ax1& A1)
71 gp_Cylinder gp_Cylinder::Mirrored (const gp_Ax1& A1) const
73 gp_Cylinder C = *this;
78 void gp_Cylinder::Mirror (const gp_Ax2& A2)
81 gp_Cylinder gp_Cylinder::Mirrored (const gp_Ax2& A2) const
83 gp_Cylinder C = *this;