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 //! Intersection between 3 planes. The algorithm searches
0027 //! for an intersection point. If two of the planes are
0028 //! parallel or identical, IsEmpty returns TRUE.
0029 class IntAna_Int3Pln
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   Standard_EXPORT IntAna_Int3Pln();
0035
0036   //! Determination of the intersection point between
0037   //! 3 planes.
0038   Standard_EXPORT IntAna_Int3Pln(const gp_Pln& P1, const gp_Pln& P2, const gp_Pln& P3);
0039
0040   //! Determination of the intersection point between
0041   //! 3 planes.
0042   Standard_EXPORT void Perform(const gp_Pln& P1, const gp_Pln& P2, const gp_Pln& P3);
0043
0044   //! Returns True if the computation was successful.
0045   Standard_Boolean IsDone() const;
0046
0047   //! Returns TRUE if there is no intersection POINT.
0048   //! If 2 planes are identical or parallel, IsEmpty
0049   //! will return TRUE.
0050   Standard_Boolean IsEmpty() const;
0051
0052   //! Returns the intersection point.
0053   const gp_Pnt& Value() const;
0054
0055 protected:
0056 private:
0057   Standard_Boolean done;
0058   Standard_Boolean empt;
0059   gp_Pnt           pnt;
0060 };
0061
0062 #include <IntAna_Int3Pln.lxx>
0063
0064 #endif // _IntAna_Int3Pln_HeaderFile