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// File: NLPlate_NLPlate.cxx
// Created: Thu Apr 9 18:33:41 1998
// Author: Andre LIEUTIER
// <alr@sgi63>
#include <math_Matrix.hxx>
#include <math_Vector.hxx>
#include <math_Gauss.hxx>
#include <gp_Vec.hxx>
#include <gp_Pnt.hxx>
#include <Plate_D1.hxx>
#include <Plate_D2.hxx>
#include <Plate_D3.hxx>
#include <Plate_Plate.hxx>
#include <Plate_PinpointConstraint.hxx>
#include <Plate_FreeGtoCConstraint.hxx>
#include <NLPlate_StackIteratorOfStackOfPlate.hxx>
#include <NLPlate_NLPlate.ixx>
NLPlate_NLPlate::NLPlate_NLPlate(const Handle(Geom_Surface)& InitialSurface) :
myInitialSurface(InitialSurface),OK(Standard_False) {}
//=======================================================================
void NLPlate_NLPlate::Load(const Handle(NLPlate_HGPPConstraint)& GConst)
{
if(!GConst.IsNull()) myHGPPConstraints.Append(GConst);
OK = Standard_False;
}
//=======================================================================
//function : Solve
//purpose :
//=======================================================================
void NLPlate_NLPlate::Solve(const Standard_Integer ord, const Standard_Integer InitialConsraintOrder)
{
Standard_Integer maxOrder = MaxActiveConstraintOrder();
Standard_Integer ordre = ord;
if(ordre<maxOrder+2) ordre = maxOrder+2;
for(Standard_Integer iterOrder=InitialConsraintOrder;iterOrder<=maxOrder;iterOrder++)
{
if(!Iterate(iterOrder,ordre+iterOrder-maxOrder))
{
OK = Standard_False;
break;
}
}
OK = Standard_True;
}
//=======================================================================
//function : Solve2
//purpose :
//=======================================================================
void NLPlate_NLPlate::Solve2(const Standard_Integer ord, const Standard_Integer InitialConsraintOrder)
{
Standard_Integer maxOrder = MaxActiveConstraintOrder();
Standard_Integer ordre = ord;
if(ordre<maxOrder+2) ordre = maxOrder+2;
if(Iterate(0,ord))
{
mySOP.ChangeTop().SetPolynomialPartOnly(Standard_True);
ConstraintsSliding();
}
for(Standard_Integer iterOrder=InitialConsraintOrder;iterOrder<=maxOrder;iterOrder++)
{
if(!Iterate(iterOrder,ordre+iterOrder-maxOrder))
{
OK = Standard_False;
break;
}
}
OK = Standard_True;
}
//=======================================================================
//function : IncrementalSolve
//purpose :
//=======================================================================
void NLPlate_NLPlate::IncrementalSolve(const Standard_Integer ord, const Standard_Integer InitialConsraintOrder,
const Standard_Integer NbIncrements, const Standard_Boolean UVSliding)
{
Standard_Integer maxOrder = MaxActiveConstraintOrder();
Standard_Integer ordre = ord;
if(ordre<maxOrder+2) ordre = maxOrder+2;
Standard_Real IncrementalLoad = 1.;
for(Standard_Integer increment=0;increment < NbIncrements;increment++)
{
IncrementalLoad = 1./Standard_Real(NbIncrements-increment);
// for(Standard_Integer iterOrder=InitialConsraintOrder;iterOrder<=maxOrder;iterOrder++)
Standard_Integer iterOrder=maxOrder;
{
if(!Iterate(iterOrder,ordre+iterOrder-maxOrder,IncrementalLoad))
{
OK = Standard_False;
return;
}
}
if(UVSliding) ConstraintsSliding();
}
OK = Standard_True;
}
//=======================================================================
Standard_Boolean NLPlate_NLPlate::IsDone() const
{
return OK;
}
//=======================================================================
void NLPlate_NLPlate::destroy()
{
Init();
}
//=======================================================================
void NLPlate_NLPlate::Init()
{
mySOP.Clear();
myHGPPConstraints.Clear();
}
//=======================================================================
gp_XYZ NLPlate_NLPlate::Evaluate(const gp_XY& point2d) const
{
return EvaluateDerivative(point2d,0,0);
}
//=======================================================================
gp_XYZ NLPlate_NLPlate::EvaluateDerivative(const gp_XY& point2d,const Standard_Integer iu,const Standard_Integer iv) const
{
gp_XYZ Value(0.,0.,0.);
if((iu==0)&&(iv==0))
Value = myInitialSurface->Value(point2d.X(),point2d.Y()).XYZ();
else
Value = myInitialSurface->DN(point2d.X(),point2d.Y(),iu,iv).XYZ();
for(NLPlate_StackIteratorOfStackOfPlate SI(mySOP);SI.More();SI.Next())
{
if(SI.Value().IsDone())
Value += SI.Value().EvaluateDerivative(point2d,iu,iv);
}
return Value;
}
//=======================================================================
Standard_Integer NLPlate_NLPlate::Continuity() const
{
Standard_Integer cont ;
for( cont=-1; cont<10;cont++)
{
if(!(myInitialSurface->IsCNu(cont+1)&&myInitialSurface->IsCNv(cont+1)))break;
}
for(NLPlate_StackIteratorOfStackOfPlate SI(mySOP);SI.More();SI.Next())
{
if((SI.Value().IsDone())&&(cont > SI.Value().Continuity())) cont = SI.Value().Continuity();
}
return cont;
}
//=======================================================================
Standard_Boolean NLPlate_NLPlate::Iterate(const Standard_Integer ConstraintOrder,
const Standard_Integer ResolutionOrder,
const Standard_Real IncrementalLoading)
{
Plate_Plate EmptyPlate;
mySOP.Push(EmptyPlate);
Plate_Plate &TopP = mySOP.ChangeTop();
for(Standard_Integer index =1; index <= myHGPPConstraints.Length(); index++)
{
const Handle(NLPlate_HGPPConstraint) &HGPP = myHGPPConstraints(index);
Standard_Integer Order = HGPP->ActiveOrder();
if(ConstraintOrder<Order) Order = ConstraintOrder;
const gp_XY &UV = HGPP->UV();
if((Order >=0)&& HGPP->IsG0())
{
if(HGPP->IncrementalLoadAllowed())
TopP.Load(Plate_PinpointConstraint(UV, (HGPP->G0Target()-Evaluate(UV))*IncrementalLoading));
else
TopP.Load(Plate_PinpointConstraint(UV, HGPP->G0Target()-Evaluate(UV)));
}
if((IncrementalLoading != 1.) && HGPP->IncrementalLoadAllowed() && (Order>=1))
{
switch(Order)
{
case 1:
{
Plate_D1 D1S(EvaluateDerivative(UV,1,0),EvaluateDerivative(UV,0,1));
TopP.Load(Plate_FreeGtoCConstraint(UV,D1S,HGPP->G1Target(),IncrementalLoading,HGPP->Orientation()));
}
break;
case 2:
{
Plate_D1 D1S(EvaluateDerivative(UV,1,0),EvaluateDerivative(UV,0,1));
Plate_D2 D2S(EvaluateDerivative(UV,2,0),EvaluateDerivative(UV,1,1),EvaluateDerivative(UV,0,2));
TopP.Load(Plate_FreeGtoCConstraint(UV,D1S,HGPP->G1Target(),D2S,HGPP->G2Target(),
IncrementalLoading,HGPP->Orientation()));
}
break;
case 3:
{
Plate_D1 D1S(EvaluateDerivative(UV,1,0),EvaluateDerivative(UV,0,1));
Plate_D2 D2S(EvaluateDerivative(UV,2,0),EvaluateDerivative(UV,1,1),EvaluateDerivative(UV,0,2));
Plate_D3 D3S(EvaluateDerivative(UV,3,0),EvaluateDerivative(UV,2,1),
EvaluateDerivative(UV,1,2),EvaluateDerivative(UV,0,3));
TopP.Load(Plate_FreeGtoCConstraint(UV,D1S,HGPP->G1Target(),D2S,HGPP->G2Target(),D3S,HGPP->G3Target(),
IncrementalLoading,HGPP->Orientation()));
}
break;
default:
break;
}
}
else
{
switch(Order)
{
case 1:
{
Plate_D1 D1S(EvaluateDerivative(UV,1,0),EvaluateDerivative(UV,0,1));
TopP.Load(Plate_FreeGtoCConstraint(UV,D1S,HGPP->G1Target()));
}
break;
case 2:
{
Plate_D1 D1S(EvaluateDerivative(UV,1,0),EvaluateDerivative(UV,0,1));
Plate_D2 D2S(EvaluateDerivative(UV,2,0),EvaluateDerivative(UV,1,1),EvaluateDerivative(UV,0,2));
TopP.Load(Plate_FreeGtoCConstraint(UV,D1S,HGPP->G1Target(),D2S,HGPP->G2Target()));
}
break;
case 3:
{
Plate_D1 D1S(EvaluateDerivative(UV,1,0),EvaluateDerivative(UV,0,1));
Plate_D2 D2S(EvaluateDerivative(UV,2,0),EvaluateDerivative(UV,1,1),EvaluateDerivative(UV,0,2));
Plate_D3 D3S(EvaluateDerivative(UV,3,0),EvaluateDerivative(UV,2,1),
EvaluateDerivative(UV,1,2),EvaluateDerivative(UV,0,3));
TopP.Load(Plate_FreeGtoCConstraint(UV,D1S,HGPP->G1Target(),D2S,HGPP->G2Target(),D3S,HGPP->G3Target()));
}
break;
default:
break;
}
}
}
TopP.SolveTI(ResolutionOrder);
if(!TopP.IsDone())
{
mySOP.Pop();
return Standard_False;
}
else
return Standard_True;
}
//=======================================================================
void NLPlate_NLPlate::ConstraintsSliding(const Standard_Integer NbIterations)
{
for(Standard_Integer index =1; index <= myHGPPConstraints.Length(); index++)
{
const Handle(NLPlate_HGPPConstraint) &HGPP = myHGPPConstraints(index);
if(HGPP->UVFreeSliding() && HGPP->IsG0())
{
gp_XY UV = HGPP->UV();
gp_XYZ P0 = Evaluate(UV);
const gp_XYZ P1 = HGPP->G0Target();
for(Standard_Integer iter=1;iter<=NbIterations;iter++)
{
// on itere au premier ordre, ce qui suffit si on est assez pres de la surface ??
gp_XYZ DP = P1 - P0;
gp_XYZ Du = EvaluateDerivative(UV,1,0);
gp_XYZ Dv = EvaluateDerivative(UV,0,1);
math_Matrix mat(0,1,0,1);
mat(0,0) = Du*Du;
mat(0,1) = Du*Dv;
mat(1,0) = Du*Dv;
mat(1,1) = Dv*Dv;
math_Gauss gauss(mat);
if(!gauss.IsDone()) break;
math_Vector vec(0,1);
vec(0) = Du*DP;
vec(1) = Dv*DP;
math_Vector sol(0,1);
gauss.Solve(vec,sol);
UV.SetX(UV.X()+sol(0));
UV.SetY(UV.Y()+sol(1));
P0 = Evaluate(UV);
}
HGPP->SetUV(UV);
}
}
}
//=======================================================================
Standard_Integer NLPlate_NLPlate::MaxActiveConstraintOrder() const
{
Standard_Integer MaxOrder = -1;
for(Standard_Integer index =1; index <= myHGPPConstraints.Length(); index++)
{
Standard_Integer CAOrder = myHGPPConstraints(index)->ActiveOrder();
if(CAOrder > MaxOrder) MaxOrder = CAOrder;
}
return MaxOrder;
}
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