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2b2be3fb82
0030551: Foundation Classes - Integer overflow in NCollection_CellFilter HashCode Signed integers are not used in hash code functions now to prevent undefined behavior on left shift operations with signed integers. A possibility of negative values of hash codes is eliminated. INT_MAX → IntegerLast() in hash code functions. All found hash code functions behaves uniformly now: they return a value in the range [1, theUpperBound]. Relevant comments are added to such functions.
119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
// Created on: 1999-04-08
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// Created by: Fabrice SERVANT
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// Copyright (c) 1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _IntPolyh_Couple_HeaderFile
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#define _IntPolyh_Couple_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_Real.hxx>
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//! The class represents the couple of indices with additional
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//! characteristics such as analyzed flag and an angle.<br>
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//! In IntPolyh_MaillageAffinage algorithm the class is used as a
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//! couple of interfering triangles with the intersection angle.
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class IntPolyh_Couple
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Constructor
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IntPolyh_Couple() :
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myIndex1(-1),myIndex2(-1),myAnalyzed(0),myAngle(-2.0)
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{}
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//! Constructor
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IntPolyh_Couple(const Standard_Integer theTriangle1,
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const Standard_Integer theTriangle2,
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const Standard_Real theAngle = -2.0)
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:
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myIndex1(theTriangle1),
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myIndex2(theTriangle2),
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myAnalyzed(Standard_False),
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myAngle(theAngle)
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{}
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//! Returns the first index
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Standard_Integer FirstValue() const
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{
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return myIndex1;
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}
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//! Returns the second index
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Standard_Integer SecondValue() const
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{
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return myIndex2;
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}
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//! Returns TRUE if the couple has been analyzed
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Standard_Boolean IsAnalyzed() const
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{
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return myAnalyzed;
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}
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//! Returns the angle
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Standard_Real Angle() const
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{
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return myAngle;
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}
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//! Sets the triangles
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void SetCoupleValue(const Standard_Integer theInd1,
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const Standard_Integer theInd2)
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{
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myIndex1 = theInd1;
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myIndex2 = theInd2;
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}
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//! Sets the analyzed flag
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void SetAnalyzed(const Standard_Boolean theAnalyzed)
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{
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myAnalyzed = theAnalyzed;
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}
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//! Sets the angle
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void SetAngle(const Standard_Real theAngle)
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{
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myAngle = theAngle;
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}
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//! Returns true if the Couple is equal to <theOther>
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Standard_Boolean IsEqual (const IntPolyh_Couple& theOther) const
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{
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return (myIndex1 == theOther.myIndex1 && myIndex2 == theOther.myIndex2) ||
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(myIndex1 == theOther.myIndex2 && myIndex2 == theOther.myIndex1);
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}
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//! Computes a hash code for this couple, in the range [1, theUpperBound]
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//! @param theUpperBound the upper bound of the range a computing hash code must be within
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//! @return a computed hash code, in the range [1, theUpperBound]
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Standard_Integer HashCode (const Standard_Integer theUpperBound) const
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{
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return ::HashCode (myIndex1 + myIndex2, theUpperBound);
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}
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// Dump
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Standard_EXPORT void Dump (const Standard_Integer v) const;
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protected:
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private:
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Standard_Integer myIndex1;
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Standard_Integer myIndex2;
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Standard_Boolean myAnalyzed;
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Standard_Real myAngle;
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};
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#endif // _IntPolyh_Couple_HeaderFile
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