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// File: FairCurve_EnergyOfBatten.cxx
// Created: Thu Feb 1 17:08:55 1996
// Author: Philippe MANGIN
#ifndef DEB
#define No_Standard_RangeError
#define No_Standard_OutOfRange
#endif
#include <FairCurve_EnergyOfBatten.ixx>
#include <math_IntegerVector.hxx>
#include <math_GaussSetIntegration.hxx>
#include <TColgp_HArray1OfPnt2d.hxx>
//=======================================================================
FairCurve_EnergyOfBatten::FairCurve_EnergyOfBatten(const Standard_Integer BSplOrder,
const Handle(TColStd_HArray1OfReal)& FlatKnots,
const Handle(TColgp_HArray1OfPnt2d)& Poles,
const Standard_Integer ContrOrder1,
const Standard_Integer ContrOrder2,
const FairCurve_BattenLaw& Law,
const Standard_Real LengthSliding,
const Standard_Boolean FreeSliding,
const Standard_Real Angle1,
const Standard_Real Angle2)
//=======================================================================
: FairCurve_Energy( Poles, ContrOrder1, ContrOrder2,
FreeSliding, Angle1, Angle2),
MyLengthSliding(LengthSliding),
OriginalSliding(LengthSliding),
MyFreeSliding(FreeSliding),
MyBattenLaw(Law),
MyTension(BSplOrder, FlatKnots, Poles, 1, LengthSliding, Law, FreeSliding),
MySagging(BSplOrder, FlatKnots, Poles, 1, Law, FreeSliding)
{
}
//=======================================================================
Standard_Boolean FairCurve_EnergyOfBatten::Variable(math_Vector& X) const
//=======================================================================
{
Standard_Boolean Ok;
Ok = FairCurve_Energy::Variable(X);
if (MyWithAuxValue) { X(X.Upper()) = MyLengthSliding; }
return Ok;
}
//=======================================================================
void FairCurve_EnergyOfBatten::ComputePoles(const math_Vector& X)
//=======================================================================
{
FairCurve_Energy::ComputePoles(X);
if (MyWithAuxValue) { MyLengthSliding = X(X.Upper()); }
}
//=======================================================================
Standard_Boolean FairCurve_EnergyOfBatten::Compute(const Standard_Integer DerivativeOrder,
math_Vector& Result)
//=======================================================================
{
math_Vector Debut(1, 1, 0.), Fin(1, 1, 1.);
math_IntegerVector MyOrder(1, 1, 24);
Standard_Boolean Ok=Standard_False;
// Blindage contre les longueur de glissement trop exotique
MyStatus = FairCurve_OK;
if ( MyLengthSliding > 10*OriginalSliding ) {
MyStatus = FairCurve_InfiniteSliding;
return Standard_False;
}
if ( MyLengthSliding < OriginalSliding/100 ) {
MyLengthSliding = OriginalSliding/100;
}
// Mise a jour des objets sous-fonction
MyTension.SetDerivativeOrder(DerivativeOrder);
MyTension.SetLengthSliding(MyLengthSliding);
MySagging.SetDerivativeOrder(DerivativeOrder);
MyBattenLaw.SetSliding(MyLengthSliding);
// Integrations
// on decoupe afin d'avoir au moins 2 points d'integration par poles
// 24 points de Gauss => 12 poles maximum.
Standard_Integer NbInterv = (MyPoles->Length()-1) / 12 + 1, ii;
Standard_Real Delta = 1./ NbInterv;
Result.Init(0);
for (ii=1; ii<=NbInterv; ii++) {
Debut(1) = (ii-1)*Delta;
Fin(1) = ii*Delta;
math_GaussSetIntegration SumTension(MyTension, Debut, Fin, MyOrder);
Ok = SumTension.IsDone();
if (!Ok) return Ok;
math_GaussSetIntegration SumSagging(MySagging, Debut, Fin, MyOrder);
Ok = SumSagging.IsDone();
if (Ok) { Result += SumSagging.Value() + SumTension.Value(); }
}
return Ok;
}
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