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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2008 Sandia Corporation
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov
#include "vtkDiagonalMatrixSource.h"
#include "vtkArrayData.h"
#include "vtkDenseArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkSmartPointer.h"
#include "vtkSparseArray.h"
//------------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkDiagonalMatrixSource);
//------------------------------------------------------------------------------
vtkDiagonalMatrixSource::vtkDiagonalMatrixSource()
: ArrayType(DENSE)
, Extents(3)
, Diagonal(1.0)
, SuperDiagonal(0.0)
, SubDiagonal(0.0)
, RowLabel(nullptr)
, ColumnLabel(nullptr)
{
this->SetRowLabel("rows");
this->SetColumnLabel("columns");
this->SetNumberOfInputPorts(0);
this->SetNumberOfOutputPorts(1);
}
//------------------------------------------------------------------------------
vtkDiagonalMatrixSource::~vtkDiagonalMatrixSource()
{
this->SetRowLabel(nullptr);
this->SetColumnLabel(nullptr);
}
//------------------------------------------------------------------------------
void vtkDiagonalMatrixSource::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "ArrayType: " << this->ArrayType << endl;
os << indent << "Extents: " << this->Extents << endl;
os << indent << "Diagonal: " << this->Diagonal << endl;
os << indent << "SuperDiagonal: " << this->SuperDiagonal << endl;
os << indent << "SubDiagonal: " << this->SubDiagonal << endl;
os << indent << "RowLabel: " << (this->RowLabel ? this->RowLabel : "") << endl;
os << indent << "ColumnLabel: " << (this->ColumnLabel ? this->ColumnLabel : "") << endl;
}
//------------------------------------------------------------------------------
int vtkDiagonalMatrixSource::RequestData(
vtkInformation*, vtkInformationVector**, vtkInformationVector* outputVector)
{
if (this->Extents < 1)
{
vtkErrorMacro(<< "Invalid matrix extents: " << this->Extents << "x" << this->Extents
<< " array is not supported.");
return 0;
}
vtkArray* array = nullptr;
switch (this->ArrayType)
{
case DENSE:
array = this->GenerateDenseArray();
break;
case SPARSE:
array = this->GenerateSparseArray();
break;
default:
vtkErrorMacro(<< "Invalid array type: " << this->ArrayType << ".");
return 0;
}
vtkArrayData* const output = vtkArrayData::GetData(outputVector);
output->ClearArrays();
output->AddArray(array);
array->Delete();
return 1;
}
vtkArray* vtkDiagonalMatrixSource::GenerateDenseArray()
{
vtkDenseArray<double>* const array = vtkDenseArray<double>::New();
array->Resize(vtkArrayExtents::Uniform(2, this->Extents));
array->SetDimensionLabel(0, this->RowLabel);
array->SetDimensionLabel(1, this->ColumnLabel);
array->Fill(0.0);
if (this->Diagonal != 0.0)
{
for (vtkIdType i = 0; i != this->Extents; ++i)
array->SetValue(vtkArrayCoordinates(i, i), this->Diagonal);
}
if (this->SuperDiagonal != 0.0)
{
for (vtkIdType i = 0; i + 1 != this->Extents; ++i)
array->SetValue(vtkArrayCoordinates(i, i + 1), this->SuperDiagonal);
}
if (this->SubDiagonal != 0.0)
{
for (vtkIdType i = 0; i + 1 != this->Extents; ++i)
array->SetValue(vtkArrayCoordinates(i + 1, i), this->SubDiagonal);
}
return array;
}
vtkArray* vtkDiagonalMatrixSource::GenerateSparseArray()
{
vtkSparseArray<double>* const array = vtkSparseArray<double>::New();
array->Resize(vtkArrayExtents::Uniform(2, this->Extents));
array->SetDimensionLabel(0, this->RowLabel);
array->SetDimensionLabel(1, this->ColumnLabel);
if (this->Diagonal != 0.0)
{
for (vtkIdType i = 0; i != this->Extents; ++i)
array->AddValue(vtkArrayCoordinates(i, i), this->Diagonal);
}
if (this->SuperDiagonal != 0.0)
{
for (vtkIdType i = 0; i + 1 != this->Extents; ++i)
array->AddValue(vtkArrayCoordinates(i, i + 1), this->SuperDiagonal);
}
if (this->SubDiagonal != 0.0)
{
for (vtkIdType i = 0; i + 1 != this->Extents; ++i)
array->AddValue(vtkArrayCoordinates(i + 1, i), this->SubDiagonal);
}
return array;
}
VTK_ABI_NAMESPACE_END
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