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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkInitialValueProblemSolver.h"
#include "vtkFunctionSet.h"
//------------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
vtkInitialValueProblemSolver::vtkInitialValueProblemSolver()
{
this->FunctionSet = nullptr;
this->Vals = nullptr;
this->Derivs = nullptr;
this->Initialized = 0;
this->Adaptive = 0;
}
//------------------------------------------------------------------------------
vtkInitialValueProblemSolver::~vtkInitialValueProblemSolver()
{
this->SetFunctionSet(nullptr);
delete[] this->Vals;
this->Vals = nullptr;
delete[] this->Derivs;
this->Derivs = nullptr;
this->Initialized = 0;
}
//------------------------------------------------------------------------------
void vtkInitialValueProblemSolver::SetFunctionSet(vtkFunctionSet* fset)
{
if (this->FunctionSet != fset)
{
if (this->FunctionSet != nullptr)
{
this->FunctionSet->UnRegister(this);
}
if (fset != nullptr &&
(fset->GetNumberOfFunctions() != fset->GetNumberOfIndependentVariables() - 1))
{
vtkErrorMacro("Invalid function set!");
this->FunctionSet = nullptr;
return;
}
this->FunctionSet = fset;
if (this->FunctionSet != nullptr)
{
this->FunctionSet->Register(this);
}
this->Modified();
}
this->Initialize();
}
//------------------------------------------------------------------------------
void vtkInitialValueProblemSolver::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Function set : " << this->FunctionSet << endl;
os << indent << "Function values : " << this->Vals << endl;
os << indent << "Function derivatives: " << this->Derivs << endl;
os << indent << "Initialized: " << (this->Initialized ? "Yes" : "No") << endl;
}
//------------------------------------------------------------------------------
void vtkInitialValueProblemSolver::Initialize()
{
if (!this->FunctionSet)
{
return;
}
delete[] this->Vals;
this->Vals = new double[this->FunctionSet->GetNumberOfIndependentVariables()];
delete[] this->Derivs;
this->Derivs = new double[this->FunctionSet->GetNumberOfFunctions()];
this->Initialized = 1;
}
VTK_ABI_NAMESPACE_END
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