# vtkTestPolyDataFilter

VTKExamples/Cxx/Developers/vtkTestPolyDataFilter

### Code

vtkTestPolyDataFilter.cxx

    #include "vtkTestPolyDataFilter.h"

    #include "vtkObjectFactory.h"
    #include "vtkStreamingDemandDrivenPipeline.h"
    #include "vtkInformationVector.h"
    #include "vtkInformation.h"
    #include "vtkDataObject.h"
    #include "vtkSmartPointer.h"

    vtkStandardNewMacro(vtkTestPolyDataFilter);

    vtkTestPolyDataFilter::vtkTestPolyDataFilter()
    {
      this->SetNumberOfInputPorts(1);
      this->SetNumberOfOutputPorts(1);
    }

    vtkTestPolyDataFilter::~vtkTestPolyDataFilter()
    {
    }

    int vtkTestPolyDataFilter::RequestData(vtkInformation *vtkNotUsed(request),
                                                 vtkInformationVector **inputVector,
                                                 vtkInformationVector *outputVector)
    {

      // get the input and output
      vtkPolyData* input = vtkPolyData::GetData(inputVector[0],0);
      vtkPolyData* output = vtkPolyData::GetData(outputVector,0);

      input->GetPoints()->InsertNextPoint(1.0, 1.0, 1.0);

      output->ShallowCopy(input);

      return 1;
    }

    //----------------------------------------------------------------------------
    void vtkTestPolyDataFilter::PrintSelf(ostream& os, vtkIndent indent)
    {
      this->Superclass::PrintSelf(os,indent);
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(vtkTestPolyDataFilter)

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

    add_executable(vtkTestPolyDataFilter MACOSX_BUNDLE vtkTestPolyDataFilter.cxx)

    target_link_libraries(vtkTestPolyDataFilter ${VTK_LIBRARIES})

### Download and Build vtkTestPolyDataFilter

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

    cd vtkTestPolyDataFilter/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:

    ./vtkTestPolyDataFilter

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.