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# StaticImage

VTKEx/Cxx/Images/StaticImage

### Description

This example displays an image in a non-interactable window.

Other languages

See (Java)

Question

If you have a simple question about this example contact us at VTKExProject If your question is more complex and may require extended discussion, please use the VTK Discourse Forum

### Code

StaticImage.cxx

    #include <vtkSmartPointer.h>

    #include <vtkImageReader2Factory.h>
    #include <vtkImageReader2.h>
    #include <vtkImageViewer2.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" << std::endl;
        return EXIT_FAILURE;
      }

      // Read the image
      vtkSmartPointer<vtkImageReader2Factory> readerFactory =
        vtkSmartPointer<vtkImageReader2Factory>::New();
      vtkSmartPointer<vtkImageReader2> reader;
      reader.TakeReference(
        readerFactory->CreateImageReader2(argv[1]));
      reader->SetFileName(argv[1]);
      reader->Update();

      // Visualize
      vtkSmartPointer<vtkImageViewer2> imageViewer =
        vtkSmartPointer<vtkImageViewer2>::New();
      imageViewer->SetInputConnection( reader->GetOutputPort() );
      imageViewer->GetRenderWindow()->SetSize( 500, 500 );
      imageViewer->GetRenderer()->ResetCamera();

      // Set up an interactor that does not respond to mouse events
      vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      imageViewer->GetRenderWindow()->SetInteractor( renderWindowInteractor );
      renderWindowInteractor->SetInteractorStyle( 0 );
      imageViewer->Render();

      // Start the event loop
      renderWindowInteractor->Initialize();
      renderWindowInteractor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

    project(StaticImage)

    find_package(VTK COMPONENTS
      vtkCommonCore
      vtkIOImage
      vtkInteractionImage
      vtkInteractionStyle
      vtkRenderingContextOpenGL2
      vtkRenderingCore
      vtkRenderingFreeType
      vtkRenderingGL2PSOpenGL2
      vtkRenderingOpenGL2 QUIET)
    if (NOT VTK_FOUND)
      message("Skipping StaticImage: ${VTK_NOT_FOUND_MESSAGE}")
      return ()
    endif()
    message (STATUS "VTK_VERSION: ${VTK_VERSION}")
    if (VTK_VERSION VERSION_LESS "8.90.0")
      # old system
      include(${VTK_USE_FILE})
      add_executable(StaticImage MACOSX_BUNDLE StaticImage.cxx )
      target_link_libraries(StaticImage PRIVATE ${VTK_LIBRARIES})
    else ()
      # include all components
      add_executable(StaticImage MACOSX_BUNDLE StaticImage.cxx )
      target_link_libraries(StaticImage PRIVATE ${VTK_LIBRARIES})
      # vtk_module_autoinit is needed
      vtk_module_autoinit(
        TARGETS StaticImage
        MODULES ${VTK_LIBRARIES}
        )
    endif ()

### Download and Build StaticImage

Click here to download StaticImage and its CMakeLists.txt file. Once the tarball StaticImage.tar has been downloaded and extracted,

    cd StaticImage/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:

    ./StaticImage

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.