ParticleReader
VTKExamples/Cxx/IO/ParticleReader
Description¶
This example reads ascii files where each line consists of points with its position (x,y,z) and (optionally) one scalar or binary files in RAW 3d file format.
Code¶
ParticleReader.cxx
// // This example reads ascii files where each line consists of points with its position (x,y,z) // and (optionally) one scalar or binary files in RAW 3d file format. // // some standard vtk headers #include <vtkSmartPointer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkActor.h> #include <vtkProperty.h> // headers needed for this example #include <vtkParticleReader.h> #include <vtkPolyDataMapper.h> // needed to easily convert int to std::string int main(int argc, char* argv[]) { // Verify input arguments if ( argc != 2 ) { std::cout << "Usage: " << argv[0] << " Filename(.raw)" << std::endl; return EXIT_FAILURE; } std::string filePath = argv[1]; // Particles.raw supplied by VTK is big endian encoded //std::string filePath = "C:\\VTK\\vtkdata-5.8.0\\Data\\Particles.raw"; // Read the file vtkSmartPointer<vtkParticleReader> reader = vtkSmartPointer<vtkParticleReader>::New(); reader->SetFileName ( filePath.c_str() ); // if nothing gets displayed or totally wrong, swap the endianness reader->SetDataByteOrderToBigEndian(); reader->Update(); // Visualize vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(reader->GetOutputPort()); std::cout << "number of pieces: " << mapper->GetNumberOfPieces() << std::endl; mapper->SetScalarRange(4, 9); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetPointSize(4); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderer->AddActor(actor); renderer->SetBackground(.2, .3, .4); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ParticleReader) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ParticleReader MACOSX_BUNDLE ParticleReader.cxx) target_link_libraries(ParticleReader ${VTK_LIBRARIES})
Download and Build ParticleReader¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download ParticleReader and its CMakeLists.txt file. Once the tarball ParticleReader.tar has been downloaded and extracted,
cd ParticleReader/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./ParticleReader
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.