1 // Created on: 1992-09-02
2 // Created by: Remi GILET
3 // Copyright (c) 1992-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #include <gce_MakeElips.ixx>
20 #include <StdFail_NotDone.hxx>
22 //=========================================================================
23 // Creation d une Ellipse 3d de gp a partir de son Ax2 et de son +
24 // grand rayon <MajorRadius> et son petit rayon <MinorRadius>. +
25 //=========================================================================
27 gce_MakeElips::gce_MakeElips(const gp_Ax2& A2 ,
28 const Standard_Real MajorRadius ,
29 const Standard_Real MinorRadius )
31 if (MajorRadius < MinorRadius ) { TheError = gce_InvertRadius;}
32 else if (MinorRadius < 0.0) { TheError = gce_NegativeRadius; }
34 TheElips = gp_Elips(A2,MajorRadius,MinorRadius);
40 //=========================================================================
41 // Creation d une Ellipse 3d de gp de centre <Center> et de sommets +
43 // <S1> donne le grand rayon et <S2> le petit rayon. +
44 //=========================================================================
46 gce_MakeElips::gce_MakeElips(const gp_Pnt& S1 ,
48 const gp_Pnt& Center )
50 Standard_Real D1 = S1.Distance(Center);
51 if (D1 < gp::Resolution()) { TheError = gce_NullAxis; }
53 gp_Dir XAxis(gp_XYZ(S1.XYZ()-Center.XYZ()));
54 Standard_Real D2 = gp_Lin(Center,XAxis).Distance(S2);
55 if (D1 < D2 || D2 < gp::Resolution()) { TheError = gce_InvertAxis; }
57 gp_Dir Norm(XAxis.Crossed(gp_Dir(gp_XYZ(S2.XYZ()-Center.XYZ()))));
58 TheElips = gp_Elips(gp_Ax2(Center,Norm,XAxis),D1,D2);
64 const gp_Elips& gce_MakeElips::Value() const
66 StdFail_NotDone_Raise_if(TheError != gce_Done,"");
70 const gp_Elips& gce_MakeElips::Operator() const
75 gce_MakeElips::operator gp_Elips() const