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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkTableToStructuredGrid.h"
#include "vtkDoubleArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkTable.h"
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkTableToStructuredGrid);
//------------------------------------------------------------------------------
vtkTableToStructuredGrid::vtkTableToStructuredGrid()
{
this->XColumn = nullptr;
this->YColumn = nullptr;
this->ZColumn = nullptr;
this->XComponent = 0;
this->YComponent = 0;
this->ZComponent = 0;
this->WholeExtent[0] = this->WholeExtent[1] = this->WholeExtent[2] = this->WholeExtent[3] =
this->WholeExtent[4] = this->WholeExtent[5] = 0;
}
//------------------------------------------------------------------------------
vtkTableToStructuredGrid::~vtkTableToStructuredGrid()
{
this->SetXColumn(nullptr);
this->SetYColumn(nullptr);
this->SetZColumn(nullptr);
}
//------------------------------------------------------------------------------
int vtkTableToStructuredGrid::FillInputPortInformation(int vtkNotUsed(port), vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
return 1;
}
//------------------------------------------------------------------------------
int vtkTableToStructuredGrid::RequestInformation(vtkInformation* vtkNotUsed(request),
vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), this->WholeExtent, 6);
return 1;
}
//------------------------------------------------------------------------------
int vtkTableToStructuredGrid::RequestData(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkStructuredGrid* output = vtkStructuredGrid::GetData(outputVector, 0);
vtkTable* input = vtkTable::GetData(inputVector[0], 0);
vtkStreamingDemandDrivenPipeline* sddp =
vtkStreamingDemandDrivenPipeline::SafeDownCast(this->GetExecutive());
int extent[6];
sddp->GetOutputInformation(0)->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), extent);
return this->Convert(input, output, extent);
}
//------------------------------------------------------------------------------
int vtkTableToStructuredGrid::Convert(vtkTable* input, vtkStructuredGrid* output, int extent[6])
{
int num_values =
(extent[1] - extent[0] + 1) * (extent[3] - extent[2] + 1) * (extent[5] - extent[4] + 1);
if (input->GetNumberOfRows() != num_values)
{
vtkErrorMacro("The input table must have exactly " << num_values << " rows. Currently it has "
<< input->GetNumberOfRows() << " rows.");
return 0;
}
vtkDataArray* xarray = vtkArrayDownCast<vtkDataArray>(input->GetColumnByName(this->XColumn));
vtkDataArray* yarray = vtkArrayDownCast<vtkDataArray>(input->GetColumnByName(this->YColumn));
vtkDataArray* zarray = vtkArrayDownCast<vtkDataArray>(input->GetColumnByName(this->ZColumn));
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();
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->SetExtent(extent);
output->SetPoints(newPoints);
newPoints->Delete();
// 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 (arr != xarray && arr != yarray && arr != zarray)
{
output->GetPointData()->AddArray(arr);
}
}
return 1;
}
//------------------------------------------------------------------------------
void vtkTableToStructuredGrid::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "WholeExtent: " << this->WholeExtent[0] << ", " << this->WholeExtent[1] << ", "
<< this->WholeExtent[2] << ", " << this->WholeExtent[3] << ", " << this->WholeExtent[4] << ", "
<< this->WholeExtent[5] << endl;
os << indent << "XColumn: " << (this->XColumn ? this->XColumn : "(none)") << endl;
os << indent << "XComponent: " << this->XComponent << endl;
os << indent << "YColumn: " << (this->YColumn ? this->YColumn : "(none)") << endl;
os << indent << "YComponent: " << this->YComponent << endl;
os << indent << "ZColumn: " << (this->ZColumn ? this->ZColumn : "(none)") << endl;
os << indent << "ZComponent: " << this->ZComponent << endl;
}
VTK_ABI_NAMESPACE_END
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