include/opencascade/IntAna_Int3Pln.hxx

0001 // Created on: 1991-05-16
0002 // Created by: Isabelle GRIGNON
0003 // Copyright (c) 1991-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _IntAna_Int3Pln_HeaderFile
0018 #define _IntAna_Int3Pln_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <gp_Pnt.hxx>
0024 class gp_Pln;
0025
0026
0027 //! Intersection between 3 planes. The algorithm searches
0028 //! for an intersection point. If two of the planes are
0029 //! parallel or identical, IsEmpty returns TRUE.
0030 class IntAna_Int3Pln
0031 {
0032 public:
0033
0034   DEFINE_STANDARD_ALLOC
0035
0036
0037   Standard_EXPORT IntAna_Int3Pln();
0038
0039   //! Determination of the intersection point between
0040   //! 3 planes.
0041   Standard_EXPORT IntAna_Int3Pln(const gp_Pln& P1, const gp_Pln& P2, const gp_Pln& P3);
0042
0043   //! Determination of the intersection point between
0044   //! 3 planes.
0045   Standard_EXPORT void Perform (const gp_Pln& P1, const gp_Pln& P2, const gp_Pln& P3);
0046
0047   //! Returns True if the computation was successful.
0048     Standard_Boolean IsDone() const;
0049
0050   //! Returns TRUE if there is no intersection POINT.
0051   //! If 2 planes are identical or parallel, IsEmpty
0052   //! will return TRUE.
0053     Standard_Boolean IsEmpty() const;
0054
0055   //! Returns the intersection point.
0056     const gp_Pnt& Value() const;
0057
0058
0059
0060
0061 protected:
0062
0063
0064
0065
0066
0067 private:
0068
0069
0070
0071   Standard_Boolean done;
0072   Standard_Boolean empt;
0073   gp_Pnt pnt;
0074
0075
0076 };
0077
0078
0079 #include <IntAna_Int3Pln.lxx>
0080
0081
0082
0083
0084
0085 #endif // _IntAna_Int3Pln_HeaderFile