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/*=========================================================================
Program: Visualization Toolkit
Module: TestIOADIOS2VTX_VTI3DRendering.cxx
-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/*
* TestIOADIOS2VTX_VTI3DRendering.cxx : simple rendering test
*
* Created on: Jun 19, 2019
* Author: William F Godoy godoywf@ornl.gov
*/
#include "vtkADIOS2VTXReader.h"
#include <numeric>
#include "vtkCamera.h"
#include "vtkCellData.h"
#include "vtkDataArray.h"
#include "vtkDataObject.h"
#include "vtkDataSetMapper.h"
#include "vtkImageData.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 "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSmartPointer.h"
#include "vtkTesting.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;
}
int MPIGetSize()
{
MPI_Comm comm = MPIGetComm();
int size;
MPI_Comm_size(comm, &size);
return size;
}
std::size_t TotalElements(const std::vector<std::size_t>& dimensions) noexcept
{
return std::accumulate(dimensions.begin(), dimensions.end(), 1, std::multiplies<std::size_t>());
}
void WriteBPFile3DVars(const std::string& fileName, const adios2::Dims& shape,
const adios2::Dims& start, const adios2::Dims& count, const int rank)
{
const size_t totalElements = TotalElements(count);
const std::string extent = "0 " + std::to_string(shape[0]) + " " + "0 " +
std::to_string(shape[1]) + " " + "0 " + std::to_string(shape[2]);
const std::string imageSchema = R"( <?xml version="1.0"?>
<VTKFile type="ImageData" version="0.1" byte_order="LittleEndian">
<ImageData WholeExtent=")" +
extent +
R"(" Origin="0 0 0" Spacing="1 1 1">
<Piece Extent=")" +
extent +
R"(">
<CellData>
<DataArray Name="T" />
<DataArray Name="TIME">
time
</DataArray>
</CellData>
</Piece>
</ImageData>
</VTKFile>)";
// using adios2 C++ high-level API
std::vector<double> T(totalElements);
std::iota(T.begin(), T.end(), static_cast<double>(rank * totalElements));
adios2::fstream fw(fileName, adios2::fstream::out, MPIGetComm());
fw.write_attribute("vtk.xml", imageSchema);
fw.write("time", 0);
fw.write("T", T.data(), shape, start, count);
fw.close();
}
} // end empty namespace
int TestIOADIOS2VTX_VTI3DRendering(int argc, char* argv[])
{
vtkNew<vtkMPIController> mpiController;
mpiController->Initialize(&argc, &argv, 0);
vtkMultiProcessController::SetGlobalController(mpiController);
const int rank = MPIGetRank();
const int size = MPIGetSize();
vtkNew<vtkTesting> testing;
const std::string rootDirectory(testing->GetTempDirectory());
const std::string fileName = rootDirectory + "/heat3D_render.bp";
const adios2::Dims count{ 4, 4, 8 };
const adios2::Dims start{ static_cast<size_t>(rank) * count[0], 0, 0 };
const adios2::Dims shape{ static_cast<size_t>(size) * count[0], count[1], count[2] };
WriteBPFile3DVars(fileName, shape, start, count, rank);
vtkNew<vtkADIOS2VTXReader> adios2Reader;
adios2Reader->SetFileName(fileName.c_str());
adios2Reader->UpdateInformation();
adios2Reader->Update();
vtkMultiBlockDataSet* multiBlock = adios2Reader->GetOutput();
vtkMultiPieceDataSet* mp = vtkMultiPieceDataSet::SafeDownCast(multiBlock->GetBlock(0));
vtkImageData* imageData = vtkImageData::SafeDownCast(mp->GetPiece(rank));
// set color table
vtkSmartPointer<vtkLookupTable> lookupTable = vtkSmartPointer<vtkLookupTable>::New();
lookupTable->SetNumberOfTableValues(10);
lookupTable->SetRange(0.0, 1.0);
lookupTable->Build();
// render imageData
vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New();
mapper->SetInputData(imageData);
mapper->SetLookupTable(lookupTable);
// mapper->SelectColorArray("T");
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();
// renderWindowInteractor->Start();
mpiController->Finalize();
return EXIT_SUCCESS;
}
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