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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright (c) Kitware, Inc.
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkTableToPolyData.h"
#include "vtkCellArray.h"
#include "vtkDoubleArray.h"
#include "vtkInformation.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkTable.h"
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkTableToPolyData);
//------------------------------------------------------------------------------
vtkTableToPolyData::vtkTableToPolyData()
{
this->XColumn = nullptr;
this->YColumn = nullptr;
this->ZColumn = nullptr;
this->XColumnIndex = -1;
this->YColumnIndex = -1;
this->ZColumnIndex = -1;
this->XComponent = 0;
this->YComponent = 0;
this->ZComponent = 0;
this->Create2DPoints = false;
this->PreserveCoordinateColumnsAsDataArrays = false;
}
//------------------------------------------------------------------------------
vtkTableToPolyData::~vtkTableToPolyData()
{
this->SetXColumn(nullptr);
this->SetYColumn(nullptr);
this->SetZColumn(nullptr);
}
//------------------------------------------------------------------------------
int vtkTableToPolyData::FillInputPortInformation(int vtkNotUsed(port), vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
return 1;
}
//------------------------------------------------------------------------------
int vtkTableToPolyData::RequestData(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkTable* input = vtkTable::GetData(inputVector[0], 0);
vtkPolyData* output = vtkPolyData::GetData(outputVector, 0);
if (input->GetNumberOfRows() == 0)
{
// empty input.
return 1;
}
vtkDataArray* xarray = nullptr;
vtkDataArray* yarray = nullptr;
vtkDataArray* zarray = nullptr;
if (this->XColumn && this->YColumn)
{
xarray = vtkArrayDownCast<vtkDataArray>(input->GetColumnByName(this->XColumn));
yarray = vtkArrayDownCast<vtkDataArray>(input->GetColumnByName(this->YColumn));
zarray = vtkArrayDownCast<vtkDataArray>(input->GetColumnByName(this->ZColumn));
}
else if (this->XColumnIndex >= 0)
{
xarray = vtkArrayDownCast<vtkDataArray>(input->GetColumn(this->XColumnIndex));
yarray = vtkArrayDownCast<vtkDataArray>(input->GetColumn(this->YColumnIndex));
zarray = vtkArrayDownCast<vtkDataArray>(input->GetColumn(this->ZColumnIndex));
}
// zarray is optional
if (this->Create2DPoints)
{
if (!xarray || !yarray)
{
vtkErrorMacro("Failed to locate the columns to use for the point"
" coordinates");
return 0;
}
}
else
{
if (!xarray || !yarray || !zarray)
{
vtkErrorMacro("Failed to locate the columns to use for the point"
" coordinates");
return 0;
}
}
vtkPoints* newPoints = vtkPoints::New();
if (xarray == yarray && yarray == zarray && this->XComponent == 0 && this->YComponent == 1 &&
this->ZComponent == 2 && xarray->GetNumberOfComponents() == 3)
{
newPoints->SetData(xarray);
}
else
{
// Ideally we determine the smallest data type that can contain the values
// in all the 3 arrays. For now I am just going with doubles.
vtkDoubleArray* newData = vtkDoubleArray::New();
newData->SetNumberOfComponents(3);
newData->SetNumberOfTuples(input->GetNumberOfRows());
vtkIdType numtuples = newData->GetNumberOfTuples();
if (this->Create2DPoints)
{
for (vtkIdType cc = 0; cc < numtuples; cc++)
{
newData->SetComponent(cc, 0, xarray->GetComponent(cc, this->XComponent));
newData->SetComponent(cc, 1, yarray->GetComponent(cc, this->YComponent));
newData->SetComponent(cc, 2, 0.0);
}
}
else
{
for (vtkIdType cc = 0; cc < numtuples; cc++)
{
newData->SetComponent(cc, 0, xarray->GetComponent(cc, this->XComponent));
newData->SetComponent(cc, 1, yarray->GetComponent(cc, this->YComponent));
newData->SetComponent(cc, 2, zarray->GetComponent(cc, this->ZComponent));
}
}
newPoints->SetData(newData);
newData->Delete();
}
output->SetPoints(newPoints);
newPoints->Delete();
// Now create a poly-vertex cell will all the points.
vtkIdType numPts = newPoints->GetNumberOfPoints();
vtkIdType* ptIds = new vtkIdType[numPts];
for (vtkIdType cc = 0; cc < numPts; cc++)
{
ptIds[cc] = cc;
}
output->AllocateEstimate(1, 1);
output->InsertNextCell(VTK_POLY_VERTEX, numPts, ptIds);
delete[] ptIds;
// Add all other columns as point data.
for (int cc = 0; cc < input->GetNumberOfColumns(); cc++)
{
if (this->CheckAbort())
{
break;
}
vtkAbstractArray* arr = input->GetColumn(cc);
if (this->PreserveCoordinateColumnsAsDataArrays)
{
output->GetPointData()->AddArray(arr);
}
else if (arr != xarray && arr != yarray && arr != zarray)
{
output->GetPointData()->AddArray(arr);
}
}
return 1;
}
//------------------------------------------------------------------------------
void vtkTableToPolyData::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "XColumn: " << (this->XColumn ? this->XColumn : "(none)") << endl;
os << indent << "XComponent: " << this->XComponent << endl;
os << indent << "XColumnIndex: " << this->XColumnIndex << endl;
os << indent << "YColumn: " << (this->YColumn ? this->YColumn : "(none)") << endl;
os << indent << "YComponent: " << this->YComponent << endl;
os << indent << "YColumnIndex: " << this->YColumnIndex << endl;
os << indent << "ZColumn: " << (this->ZColumn ? this->ZColumn : "(none)") << endl;
os << indent << "ZComponent: " << this->ZComponent << endl;
os << indent << "ZColumnIndex: " << this->ZColumnIndex << endl;
os << indent << "Create2DPoints: " << (this->Create2DPoints ? "true" : "false") << endl;
os << indent << "PreserveCoordinateColumnsAsDataArrays: "
<< (this->PreserveCoordinateColumnsAsDataArrays ? "true" : "false") << endl;
}
VTK_ABI_NAMESPACE_END
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