StaticImage

VTKEx/Cxx/Images/StaticImage

Description

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

Other languages

See (Java)

Question

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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 
  vtkvtkCommonCore
  vtkvtkIOImage
  vtkvtkInteractionImage
  vtkvtkInteractionStyle
  vtkvtkRenderingContextOpenGL2
  vtkvtkRenderingCore
  vtkvtkRenderingFreeType
  vtkvtkRenderingGL2PSOpenGL2
  vtkvtkRenderingOpenGL2 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.