1 // Created on: 1991-05-16
2 // Created by: Isabelle GRIGNON
3 // Copyright (c) 1991-1999 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 #ifndef _IntAna_Int3Pln_HeaderFile
18 #define _IntAna_Int3Pln_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Boolean.hxx>
26 class StdFail_NotDone;
27 class Standard_DomainError;
32 //! Intersection between 3 planes. The algorithm searches
33 //! for an intersection point. If two of the planes are
34 //! parallel or identical, IsEmpty returns TRUE.
42 Standard_EXPORT IntAna_Int3Pln();
44 //! Determination of the intersection point between
46 Standard_EXPORT IntAna_Int3Pln(const gp_Pln& P1, const gp_Pln& P2, const gp_Pln& P3);
48 //! Determination of the intersection point between
50 Standard_EXPORT void Perform (const gp_Pln& P1, const gp_Pln& P2, const gp_Pln& P3);
52 //! Returns True if the computation was successful.
53 Standard_Boolean IsDone() const;
55 //! Returns TRUE if there is no intersection POINT.
56 //! If 2 planes are identical or parallel, IsEmpty
58 Standard_Boolean IsEmpty() const;
60 //! Returns the intersection point.
61 const gp_Pnt& Value() const;
76 Standard_Boolean done;
77 Standard_Boolean empt;
84 #include <IntAna_Int3Pln.lxx>
90 #endif // _IntAna_Int3Pln_HeaderFile