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// File: BRepMesh_PairOfIndex.hxx
// Created: 29.01.09 15:55:25
// Author: Pavel TELKOV
// Copyright: Open CASCADE 2009
/*
* Purpose: This class represent pair of integer indices
* It is restricted to store more than two indices in it
* This pair uses to store element indices connected to link
*/
#ifndef BRepMesh_PairOfIndex_HeaderFile
#define BRepMesh_PairOfIndex_HeaderFile
#include <Standard_OutOfRange.hxx>
class BRepMesh_PairOfIndex
{
public:
BRepMesh_PairOfIndex()
{ myIndx1 = myIndx2 = -1; }
BRepMesh_PairOfIndex(const BRepMesh_PairOfIndex& theOther)
{
myIndx1 = theOther.myIndx1;
myIndx1 = theOther.myIndx2;
}
//! Clear indices
void Clear()
{
myIndx1 = myIndx2 = -1;
}
//! append index (store first of last index of pair)
void Append(const Standard_Integer theIndx)
{
if ( myIndx1 < 0 )
myIndx1 = theIndx;
else
{
if ( myIndx2 >= 0 )
Standard_OutOfRange::Raise ("BRepMesh_PairOfIndex::Append, more than two index to store");
myIndx2 = theIndx;
}
}
//! prepend index (store first index)
void Prepend(const Standard_Integer theIndx)
{
if ( myIndx2 >= 0 )
Standard_OutOfRange::Raise ("BRepMesh_PairOfIndex::Append, more than two index to store");
myIndx2 = myIndx1;
myIndx1 = theIndx;
}
//! returns is pair not initialized by index
Standard_Boolean IsEmpty() const
{
return (myIndx1 < 0 /*optimisation && myIndx2 < 0*/);
}
//! returns numner of initialized indeces
Standard_Integer Extent() const
{
return (myIndx1 < 0 ? 0 : (myIndx2 < 0 ? 1 : 2));
}
//! returns first index from pair
Standard_Integer FirstIndex() const
{
return myIndx1;
}
//! returns last index
Standard_Integer LastIndex() const
{
return (myIndx2 < 0 ? myIndx1 : myIndx2);
}
Standard_Integer Index(const Standard_Integer theNum) const
{
return (theNum == 1 ? myIndx1 : myIndx2 /*(theNum == 2 ? myIndx2 : -1 )*/);
}
void SetIndex(const Standard_Integer theNum,
const Standard_Integer theIndex)
{
theNum == 1 ? myIndx1 = theIndex : myIndx2 = theIndex;
}
//! remove indicated
void RemoveIndex (const Standard_Integer theNum)
{
if ( theNum == 1 )
myIndx1 = myIndx2;
myIndx2 = -1;
}
//! fields
private:
Standard_Integer myIndx1;
Standard_Integer myIndx2;
};
#endif
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