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# HanoiInitial

VTKEx/Cxx/Visualization/HanoiInitial

### Description

Towers of Hanoi, initial configuration,

Info

See Figure 12-20a in Chapter 12 the VTK Textbook.

Other languages

See (Python)

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

HanoiInitial.cxx

    #include <vtkActor.h>
    #include <vtkCallbackCommand.h>
    #include <vtkCamera.h>
    #include <vtkCylinderSource.h>
    #include <vtkMath.h>
    #include <vtkMinimalStandardRandomSequence.h>
    #include <vtkNamedColors.h>
    #include <vtkPNGWriter.h>
    #include <vtkPlaneSource.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkProperty.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkRenderer.h>
    #include <vtkRendererCollection.h>
    #include <vtkSmartPointer.h>
    #include <vtkWindowToImageFilter.h>

    // Start this program with the parameter: -c 1
    #include "Hanoi.cxx"

### CMakeLists.txt

    cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

    project(HanoiInitial)

    find_package(VTK COMPONENTS
      vtkvtkCommonColor
      vtkvtkCommonCore
      vtkvtkFiltersSources
      vtkvtkIOImage
      vtkvtkInteractionStyle
      vtkvtkRenderingContextOpenGL2
      vtkvtkRenderingCore
      vtkvtkRenderingFreeType
      vtkvtkRenderingGL2PSOpenGL2
      vtkvtkRenderingOpenGL2 QUIET)
    if (NOT VTK_FOUND)
      message("Skipping HanoiInitial: ${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(HanoiInitial MACOSX_BUNDLE HanoiInitial.cxx )
      target_link_libraries(HanoiInitial PRIVATE ${VTK_LIBRARIES})
    else ()
      # include all components
      add_executable(HanoiInitial MACOSX_BUNDLE HanoiInitial.cxx )
      target_link_libraries(HanoiInitial PRIVATE ${VTK_LIBRARIES})
      # vtk_module_autoinit is needed
      vtk_module_autoinit(
        TARGETS HanoiInitial
        MODULES ${VTK_LIBRARIES}
        )
    endif ()

### Download and Build HanoiInitial

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

    cd HanoiInitial/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:

    ./HanoiInitial

WINDOWS USERS

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