include/opencascade/StepToTopoDS_PointPair.hxx

0001 // Created on: 1993-08-06
0002 // Created by: Martine LANGLOIS
0003 // Copyright (c) 1993-1999 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 _StepToTopoDS_PointPair_HeaderFile
0018 #define _StepToTopoDS_PointPair_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 class StepGeom_CartesianPoint;
0025
0026 //! Stores a pair of Points from step
0027 class StepToTopoDS_PointPair
0028 {
0029 public:
0030   DEFINE_STANDARD_ALLOC
0031
0032   Standard_EXPORT StepToTopoDS_PointPair(const occ::handle<StepGeom_CartesianPoint>& P1,
0033                                          const occ::handle<StepGeom_CartesianPoint>& P2);
0034
0035   const occ::handle<StepGeom_CartesianPoint>& GetPoint1() const { return myP1; }
0036
0037   const occ::handle<StepGeom_CartesianPoint>& GetPoint2() const { return myP2; }
0038
0039   bool operator==(const StepToTopoDS_PointPair& thePointPair) const
0040   {
0041     return (((myP1 == thePointPair.myP1) && (myP2 == thePointPair.myP2))
0042             || ((myP1 == thePointPair.myP2) && (myP2 == thePointPair.myP1)));
0043   }
0044
0045 private:
0046   occ::handle<StepGeom_CartesianPoint> myP1;
0047   occ::handle<StepGeom_CartesianPoint> myP2;
0048 };
0049
0050 namespace std
0051 {
0052 template <>
0053 struct hash<StepToTopoDS_PointPair>
0054 {
0055   size_t operator()(const StepToTopoDS_PointPair& thePointPair) const noexcept
0056   {
0057     // Combine two int values into a single hash value.
0058     size_t aCombination[2];
0059     aCombination[0] = std::hash<occ::handle<StepGeom_CartesianPoint>>{}(thePointPair.GetPoint1());
0060     aCombination[1] = std::hash<occ::handle<StepGeom_CartesianPoint>>{}(thePointPair.GetPoint2());
0061     if (aCombination[0] > aCombination[1])
0062     {
0063       std::swap(aCombination[0], aCombination[1]);
0064     }
0065     return opencascade::hashBytes(aCombination, sizeof(aCombination));
0066   }
0067 };
0068 } // namespace std
0069
0070 #endif // _StepToTopoDS_PointPair_HeaderFile