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StaticImage

Repository source: 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 <vtkImageReader2.h>
#include <vtkImageReader2Factory.h>
#include <vtkImageViewer2.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>

int main(int argc, char* argv[])
{
  vtkNew<vtkNamedColors> colors;

  // Verify input arguments.
  if (argc != 2)
  {
    std::cout << "Usage: " << argv[0] << " Filename e.g. Ox.jpg" << std::endl;
    return EXIT_FAILURE;
  }

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

  // Visualize.
  vtkNew<vtkImageViewer2> imageViewer;
  imageViewer->SetInputConnection(reader->GetOutputPort());
  imageViewer->GetRenderWindow()->SetSize(500, 500);
  imageViewer->GetRenderWindow()->SetWindowName("StaticImage");
  imageViewer->GetRenderer()->SetBackground(
      colors->GetColor3d("Peru").GetData());
  imageViewer->GetRenderer()->ResetCamera();

  // Set up an interactor that does not respond to mouse events.
  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  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 3.12 FATAL_ERROR)

project(StaticImage)

find_package(VTK COMPONENTS 
  CommonColor
  CommonCore
  IOImage
  InteractionImage
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "StaticImage: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
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}
)

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.