VTK/Examples/Cxx/IO/ReadUnstructuredGrid
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< VTK | Examples | Cxx(Redirected from VTK/Examples/IO/ReadUnstructuredGrid)
This examples demonstrates how to read an unstructured grid (VTU) file.
An example data file (.vtu) for testing can be found in VTKData/Data/quadraticTetra01.vtu.
ReadVTUFile.cxx
#include <vtkXMLUnstructuredGridReader.h> #include <vtkSmartPointer.h> #include <vtkDataSetMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> int main ( int argc, char *argv[] ) { //parse command line arguments if(argc != 2) { std::cerr << "Usage: " << argv[0] << " Filename(.vtu)" << std::endl; return EXIT_FAILURE; } std::string filename = argv[1]; //read all the data from the file vtkSmartPointer<vtkXMLUnstructuredGridReader> reader = vtkSmartPointer<vtkXMLUnstructuredGridReader>::New(); reader->SetFileName(filename.c_str()); reader->Update(); //Create a mapper and actor vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New(); mapper->SetInputConnection(reader->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); //Create a renderer, render window, and interactor vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); //Add the actor to the scene renderer->AddActor(actor); renderer->SetBackground(.3, .6, .3); // Background color green //Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt
cmake_minimum_required(VERSION 2.6) PROJECT(ReadUnstructuredGrid) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) if (APPLE) add_executable(ReadUnstructuredGrid MACOSX_BUNDLE ReadUnstructuredGrid.cxx) else() add_executable(ReadUnstructuredGrid ReadUnstructuredGrid.cxx) endif() if(VTK_LIBRARIES) target_link_libraries(ReadUnstructuredGrid ${VTK_LIBRARIES}) else() target_link_libraries(ReadUnstructuredGrid vtkHybrid ) endif()
