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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkOpenFOAMReader.h"
#include "vtkCellData.h"
#include "vtkInformation.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkNew.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
#include "vtkPolyDataMapper.h"
#include "vtkProperty.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkUnstructuredGrid.h"
#include "vtkRegressionTestImage.h"
#include "vtkTestUtilities.h"
namespace
{
// Get any block of specified type
template <class Type>
Type* findBlock(vtkMultiBlockDataSet* mb)
{
Type* dataset = nullptr;
const unsigned int nblocks = (mb ? mb->GetNumberOfBlocks() : 0u);
for (unsigned int blocki = 0; !dataset && blocki < nblocks; ++blocki)
{
vtkDataObject* obj = mb->GetBlock(blocki);
dataset = Type::SafeDownCast(obj);
if (!dataset)
{
dataset = findBlock<Type>(vtkMultiBlockDataSet::SafeDownCast(obj));
}
}
return dataset;
}
// Get named block of specified type
template <class Type>
Type* findBlock(vtkMultiBlockDataSet* mb, const char* blockName)
{
Type* dataset = nullptr;
const unsigned int nblocks = (mb ? mb->GetNumberOfBlocks() : 0u);
for (unsigned int blocki = 0; !dataset && blocki < nblocks; ++blocki)
{
vtkDataObject* obj = mb->GetBlock(blocki);
if (strcmp(mb->GetMetaData(blocki)->Get(vtkCompositeDataSet::NAME()), blockName) == 0)
{
dataset = Type::SafeDownCast(obj);
}
if (!dataset)
{
dataset = findBlock<Type>(vtkMultiBlockDataSet::SafeDownCast(obj), blockName);
}
}
return dataset;
}
} // End anonymous namespace
int TestOpenFOAMReaderFaceZone(int argc, char* argv[])
{
// Read file name.
char* filename =
vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/OpenFOAM/squareBend/squareBend.foam");
// Read the file
vtkNew<vtkOpenFOAMReader> reader;
reader->SetFileName(filename);
delete[] filename;
reader->SetTimeValue(100);
// These method names will be revised in the future
reader->ReadZonesOn();
reader->CopyDataToCellZonesOn();
// Dont currently need anything selected (controlled above)
reader->DisableAllPatchArrays();
reader->Update();
auto* allBlocks = vtkMultiBlockDataSet::SafeDownCast(reader->GetOutput());
auto* zoneBlocks = findBlock<vtkMultiBlockDataSet>(allBlocks, "zones");
if (!zoneBlocks)
{
std::cout << "No zone blocks!\n";
return 1;
}
// Get the first polyData set (faces)
auto* fzone = findBlock<vtkPolyData>(zoneBlocks);
if (!fzone)
{
std::cout << "No faceZone!\n";
return 1;
}
fzone->GetCellData()->SetScalars(fzone->GetCellData()->GetArray("p"));
// Visualize
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputData(fzone);
mapper->ScalarVisibilityOn();
mapper->SetColorModeToMapScalars();
mapper->SetScalarRange(-40, 80);
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
renderer->AddActor(actor);
renderer->SetBackground(0, 0, 0);
renderWindow->Render();
int retVal = vtkRegressionTestImage(renderWindow);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
renderWindowInteractor->Start();
}
return EXIT_SUCCESS;
}
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