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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
/*
* TestIOADIOS2VTX_VTU2DRendering.cxx : simple rendering test for unstructured
* grid data from 2D to 3D
*
* Created on: Jun 19, 2019
* Author: William F Godoy godoywf@ornl.gov
*/
#include "vtkADIOS2VTXReader.h"
#include <numeric> //std::iota
#include "vtkCamera.h"
#include "vtkCellData.h"
#include "vtkDataArray.h"
#include "vtkDataObject.h"
#include "vtkDataSetMapper.h"
#include "vtkInformation.h"
#include "vtkLookupTable.h"
#include "vtkMPI.h"
#include "vtkMPICommunicator.h"
#include "vtkMPIController.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkMultiPieceDataSet.h"
#include "vtkMultiProcessController.h"
#include "vtkNew.h"
#include "vtkPointData.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSmartPointer.h"
#include "vtkTesting.h"
#include "vtkUnstructuredGrid.h"
#include <adios2.h>
namespace
{
MPI_Comm MPIGetComm()
{
MPI_Comm comm = MPI_COMM_NULL;
vtkMultiProcessController* controller = vtkMultiProcessController::GetGlobalController();
vtkMPICommunicator* vtkComm = vtkMPICommunicator::SafeDownCast(controller->GetCommunicator());
if (vtkComm)
{
if (vtkComm->GetMPIComm())
{
comm = *(vtkComm->GetMPIComm()->GetHandle());
}
}
return comm;
}
int MPIGetRank()
{
MPI_Comm comm = MPIGetComm();
int rank;
MPI_Comm_rank(comm, &rank);
return rank;
}
void WriteBP(const std::string& fileName)
{
// clang-format off
const std::vector<std::uint64_t> connectivity = {
2, 0, 1,
2, 1, 2,
2, 2, 3,
2, 3, 4,
2, 4, 5};
const std::vector<double> vertices = { 0,
1,
2,
3,
4,
5,};
// clang-format on
std::vector<double> sol(6);
std::iota(sol.begin(), sol.end(), 1.);
adios2::fstream fs(fileName, adios2::fstream::out, MPI_COMM_SELF);
fs.write("types", 3);
fs.write("connectivity", connectivity.data(), {}, {}, { 5, 3 });
fs.write("vertices", vertices.data(), {}, {}, { 6, 1 });
fs.write("sol", sol.data(), {}, {}, { 6 });
const std::string vtuXML = R"(
<VTKFile type="UnstructuredGrid">
<UnstructuredGrid>
<Piece>
<Points>
<DataArray Name="vertices" />
</Points>
<Cells>
<DataArray Name="connectivity" />
<DataArray Name="types" />
</Cells>
<PointData>
<DataArray Name="sol" />
</PointData>
</Piece>
</UnstructuredGrid>
</VTKFile>)";
fs.write_attribute("vtk.xml", vtuXML);
fs.close();
}
} // end empty namespace
int TestIOADIOS2VTX_VTU1DRendering(int argc, char* argv[])
{
vtkNew<vtkMPIController> mpiController;
mpiController->Initialize(&argc, &argv, 0);
vtkMultiProcessController::SetGlobalController(mpiController);
const int rank = MPIGetRank();
vtkNew<vtkTesting> testing;
const std::string rootDirectory(testing->GetTempDirectory());
const std::string fileName = rootDirectory + "/testVTU1D.bp";
if (rank == 0)
{
WriteBP(fileName);
}
vtkNew<vtkADIOS2VTXReader> adios2Reader;
adios2Reader->SetFileName(fileName.c_str());
adios2Reader->UpdateInformation();
adios2Reader->Update();
vtkMultiBlockDataSet* multiBlock = adios2Reader->GetOutput();
vtkMultiPieceDataSet* mp = vtkMultiPieceDataSet::SafeDownCast(multiBlock->GetBlock(0));
vtkUnstructuredGrid* unstructuredGrid = vtkUnstructuredGrid::SafeDownCast(mp->GetPiece(0));
// set color table
vtkSmartPointer<vtkLookupTable> lookupTable = vtkSmartPointer<vtkLookupTable>::New();
lookupTable->SetNumberOfTableValues(10);
lookupTable->SetRange(0.0, 1.0);
lookupTable->Build();
// render unstructured grid
vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New();
mapper->SetInputData(unstructuredGrid);
mapper->SetLookupTable(lookupTable);
mapper->SelectColorArray("sol");
mapper->SetScalarModeToUseCellFieldData();
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
// Add both renderers to the window
renderWindow->AddRenderer(renderer);
renderer->AddActor(actor);
renderer->ResetCamera();
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
renderWindow->Render();
mpiController->Finalize();
return EXIT_SUCCESS;
}
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