# SplineWidget

VTKExamples/Cxx/Widgets/SplineWidget

### Code

SplineWidget.cxx

    #include <vtkRenderWindow.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkSmartPointer.h>
    #include <vtkSplineWidget2.h>

    int main(int, char *[])
    {
      // A renderer and render window
      vtkSmartPointer<vtkRenderer> renderer =
        vtkSmartPointer<vtkRenderer>::New();
      vtkSmartPointer<vtkRenderWindow> renderWindow =
        vtkSmartPointer<vtkRenderWindow>::New();
      renderWindow->AddRenderer(renderer);

      // An interactor
      vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      renderWindowInteractor->SetRenderWindow(renderWindow);

      vtkSmartPointer<vtkSplineWidget2> splineWidget =
        vtkSmartPointer<vtkSplineWidget2>::New();
      splineWidget->SetInteractor(renderWindowInteractor);

      renderWindowInteractor->Initialize();
      renderWindow->Render();
      splineWidget->On();
      renderer->ResetCamera();
      renderWindowInteractor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(SplineWidget)

    find_package(VTK REQUIRED)
    include(${VTK_USE_FILE})

    add_executable(SplineWidget MACOSX_BUNDLE SplineWidget.cxx )

    target_link_libraries(SplineWidget ${VTK_LIBRARIES})

### Download and Build SplineWidget

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

    cd SplineWidget/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:

    ./SplineWidget

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.