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// File: SelectMgr_SortCriterion.cxx
// Created: Thu Mar 26 17:32:47 1998
// Author: Robert COUBLANC
// <rob@robox.paris1.matra-dtv.fr>
#include <SelectMgr_SortCriterion.ixx>
#include <Precision.hxx>
//=======================================================================
//function : SelectMgr_SortCriterion
//purpose : Empty constructor
//=======================================================================
SelectMgr_SortCriterion::SelectMgr_SortCriterion()
: myPrior (0),
myDepth (0.0),
myDist (0.0),
myTol (0.0),
myPreferClosest(Standard_True)
{}
//=======================================================================
//function : SelectMgr_SortCriterion
//purpose : Constructor
//=======================================================================
SelectMgr_SortCriterion::SelectMgr_SortCriterion(const Standard_Integer Prior,
const Standard_Real Depth,
const Standard_Real Dist,
const Standard_Real Tol,
const Standard_Boolean PreferClosest)
: myPrior (Prior),
myDepth (Depth),
myDist (Dist),
myTol (Tol),
myPreferClosest(PreferClosest)
{}
//=======================================================================
//function : IsGreater
//purpose : priorite d'abor, puis profondeur + distance...
//=======================================================================
Standard_Boolean SelectMgr_SortCriterion::IsGreater
(const SelectMgr_SortCriterion& SC) const
{
if ( myPreferClosest )
{
// closest object is selected unless difference is within tolerance
if ( Abs (myDepth - SC.Depth()) > myTol + SC.Tol() )
return myDepth < SC.Depth();
// if two objects have similar depth, select the one with higher
// priority or, if priorities are equal, one closest to the mouse
return myPrior > SC.Priority() ? Standard_True :
myPrior < SC.Priority() ? Standard_False :
myDist < SC.MinDist();
}
// old logic (OCCT version <= 6.3.1)
if(myPrior>SC.Priority()) return Standard_True;
if(myPrior<SC.Priority()) return Standard_False;
if(Abs(myDepth-SC.Depth())<=Precision::Confusion())
return myDist < SC.MinDist();
return (myDepth < SC.Depth() );
}
//=======================================================================
//function : IsLower
//purpose : On n'utilise que les criteres de profondeur et de priorite...
//=======================================================================
Standard_Boolean SelectMgr_SortCriterion::IsLower
(const SelectMgr_SortCriterion& SC) const
{
if ( myPreferClosest )
{
// closest object is selected unless difference is within tolerance
if ( myPreferClosest && Abs (myDepth - SC.Depth()) > myTol + SC.Tol() )
return myDepth > SC.Depth();
// if two objects have similar depth, select the one with higher
// priority or, if priorities are equal, one closest to the mouse
return myPrior < SC.Priority() ? Standard_True :
myPrior > SC.Priority() ? Standard_False :
myDist > SC.MinDist();
}
// old logic (OCCT version <= 6.3.1)
if(myPrior>SC.Priority()) return Standard_False;
if(myPrior<SC.Priority()) return Standard_True;
if(Abs(myDepth-SC.Depth())<=Precision::Confusion())
return myDist > SC.MinDist();
return (myDepth > SC.Depth() );
}
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