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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// Test the vtkImageAlgorithm::CopyAttributeData() method, which copies
// all of the attribute data arrays (PointData and CellData) that is
// not usually handled by the Execute methods of the imaging filters
// (Execute methods typically process only the PointData Scalars).
#include "vtkCellData.h"
#include "vtkFloatArray.h"
#include "vtkImageAlgorithm.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkIntArray.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkSmartPointer.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkStringArray.h"
#include "vtkVariant.h"
#include <cmath>
#include <cstring>
// Make a dummy image filter that does nothing but call CopyAttributeData.
class vtkDummyImageFilter : public vtkImageAlgorithm
{
public:
static vtkDummyImageFilter* New();
vtkTypeMacro(vtkDummyImageFilter, vtkImageAlgorithm);
protected:
vtkDummyImageFilter() = default;
~vtkDummyImageFilter() override = default;
int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
vtkInformationVector* outputVector) override;
private:
vtkDummyImageFilter(const vtkDummyImageFilter&) = delete;
void operator=(const vtkDummyImageFilter&) = delete;
};
vtkStandardNewMacro(vtkDummyImageFilter);
int vtkDummyImageFilter::RequestData(
vtkInformation*, vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkImageData* inData = vtkImageData::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkImageData* outData = vtkImageData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
int extent[6];
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), extent);
this->AllocateOutputData(outData, outInfo, extent);
// this is what we are testing
this->CopyAttributeData(inData, outData, inputVector);
// scalars would usually be processed here, but this is a dummy filter
return 1;
}
int TestCopyAttributeData(int, char*[])
{
int extent[6] = { 0, 6, 0, 4, 0, 2 };
int outExt[6] = { 0, 4, 2, 2, 0, 2 };
vtkSmartPointer<vtkImageData> image = vtkSmartPointer<vtkImageData>::New();
image->SetExtent(extent);
image->AllocateScalars(VTK_UNSIGNED_CHAR, 1);
vtkIdType numPoints = image->GetNumberOfPoints();
vtkIdType numCells = image->GetNumberOfCells();
vtkSmartPointer<vtkFloatArray> pointVectors = vtkSmartPointer<vtkFloatArray>::New();
pointVectors->SetName("ImageVectors");
pointVectors->SetNumberOfComponents(3);
pointVectors->SetNumberOfTuples(numPoints);
for (vtkIdType i = 0; i < numPoints; i++)
{
double v[3];
v[0] = sin(i * 0.5);
v[1] = cos(i * 0.5);
v[2] = sin(i * 0.1);
pointVectors->SetTuple(i, v);
}
vtkSmartPointer<vtkIntArray> cellScalars = vtkSmartPointer<vtkIntArray>::New();
cellScalars->SetName("CellScalars");
cellScalars->SetNumberOfValues(numCells);
vtkSmartPointer<vtkStringArray> cellStrings = vtkSmartPointer<vtkStringArray>::New();
cellStrings->SetName("CellStrings");
cellStrings->SetNumberOfValues(numCells);
for (vtkIdType j = 0; j < numCells; j++)
{
vtkVariant val(j);
cellScalars->SetValue(j, j);
cellStrings->SetValue(j, val.ToString());
}
image->GetPointData()->SetVectors(pointVectors);
image->GetCellData()->SetScalars(cellScalars);
image->GetCellData()->AddArray(cellStrings);
vtkSmartPointer<vtkDummyImageFilter> filter = vtkSmartPointer<vtkDummyImageFilter>::New();
filter->SetInputData(image);
for (int r = 0; r < 2; r++)
{
filter->UpdateExtent(outExt);
vtkImageData* output = filter->GetOutput();
vtkDataArray* outPointVectors = output->GetPointData()->GetVectors();
vtkDataArray* outCellScalars = output->GetCellData()->GetScalars();
vtkStringArray* outCellStrings =
vtkArrayDownCast<vtkStringArray>(output->GetCellData()->GetAbstractArray("CellStrings"));
for (int zId = outExt[4]; zId <= outExt[5]; zId++)
{
for (int yId = outExt[2]; yId <= outExt[3]; yId++)
{
for (int xId = outExt[0]; xId <= outExt[1]; xId++)
{
vtkIdType inIdx = (zId - extent[4]) * (extent[3] - extent[2] + 1);
inIdx = (inIdx + yId - extent[2]) * (extent[1] - extent[0] + 1);
inIdx = inIdx + xId - extent[0];
vtkIdType outIdx = (zId - outExt[4]) * (outExt[3] - outExt[2] + 1);
outIdx = (outIdx + yId - outExt[2]) * (outExt[1] - outExt[0] + 1);
outIdx = outIdx + xId - outExt[0];
double v1[3], v2[3];
pointVectors->GetTuple(inIdx, v1);
outPointVectors->GetTuple(outIdx, v2);
if (v1[0] != v2[0] || v1[1] != v2[1] || v1[2] != v2[2])
{
cerr << "point attribute value mismatch ";
return 1;
}
}
}
}
for (int zId = outExt[4]; zId < outExt[5]; zId++)
{
int ye = (outExt[2] == outExt[3]);
for (int yId = outExt[2]; yId < outExt[3] + ye; yId++)
{
for (int xId = outExt[0]; xId < outExt[1]; xId++)
{
vtkIdType inIdx = (zId - extent[4]) * (extent[3] - extent[2]);
inIdx = (inIdx + yId - extent[2]) * (extent[1] - extent[0]);
inIdx = inIdx + xId - extent[0];
vtkIdType outIdx = (zId - outExt[4]) * (outExt[3] - outExt[2] + ye);
outIdx = (outIdx + yId - outExt[2]) * (outExt[1] - outExt[0]);
outIdx = outIdx + xId - outExt[0];
double s1, s2;
cellScalars->GetTuple(inIdx, &s1);
outCellScalars->GetTuple(outIdx, &s2);
if (s1 != s2)
{
cerr << "cell attribute value mismatch\n";
return 1;
}
if (cellStrings->GetValue(inIdx) != outCellStrings->GetValue(outIdx))
{
cerr << "cell attribute string mismatch\n";
return 1;
}
}
}
}
// try again with full extent to test pass data
outExt[0] = extent[0];
outExt[1] = extent[1];
outExt[2] = extent[2];
outExt[3] = extent[3];
outExt[4] = extent[4];
outExt[5] = extent[5];
}
return 0;
}
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