ReadImageData
VTKExamples/Cxx/IO/ReadImageData
Description¶
This example reads an image data (.vti) file.
Code¶
ReadImageData.cxx
#include <vtkSmartPointer.h> #include <vtkProperty.h> #include <vtkDataSetMapper.h> #include <vtkImageActor.h> #include <vtkImageViewer2.h> #include <vtkXMLImageDataReader.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> int main(int argc, char* argv[]) { // Verify input arguments if(argc != 2) { std::cout << "Usage: " << argv[0] << " Filename.vti" << std::endl; return EXIT_FAILURE; } std::string inputFilename = argv[1]; // Read the file vtkSmartPointer<vtkXMLImageDataReader> reader = vtkSmartPointer<vtkXMLImageDataReader>::New(); reader->SetFileName(inputFilename.c_str()); reader->Update(); // Visualize vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New(); mapper->SetInputConnection(reader->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetRepresentationToWireframe(); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->AddActor(actor); renderer->ResetCamera(); renderer->SetBackground(1,1,1); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderWindowInteractor->Initialize(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ReadImageData) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ReadImageData MACOSX_BUNDLE ReadImageData.cxx) target_link_libraries(ReadImageData ${VTK_LIBRARIES})
Download and Build ReadImageData¶
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 Some tarballs may be missing or out-of-date.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 ReadImageData and its CMakeLists.txt file. Once the tarball ReadImageData.tar has been downloaded and extracted,
cd ReadImageData/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:
./ReadImageData
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.