# CopyAllArrays

VTKExamples/Cxx/PolyData/CopyAllArrays

### Code

CopyAllArrays.cxx

    #include <vtkSmartPointer.h>
    #include <vtkSphereSource.h>
    #include <vtkPolyData.h>
    #include <vtkPointData.h>
    #include <vtkFloatArray.h>
    #include <vtkDoubleArray.h>
    #include <vtkIntArray.h>

    void ManualMethod(vtkPolyData* input);
    void AutomaticMethod(vtkPolyData* input);

    int main(int, char *[])
    {
      vtkSmartPointer<vtkSphereSource> sphereSource =
        vtkSmartPointer<vtkSphereSource>::New();
      sphereSource->Update();

      vtkPolyData* polydata = sphereSource->GetOutput();

      vtkSmartPointer<vtkDoubleArray> doubles =
        vtkSmartPointer<vtkDoubleArray>::New();
      doubles->SetName("Doubles");
      doubles->SetNumberOfTuples(polydata->GetNumberOfPoints());

      polydata->GetPointData()->AddArray(doubles);

      vtkSmartPointer<vtkIntArray> ints =
        vtkSmartPointer<vtkIntArray>::New();
      ints->SetName("Ints");
      ints->SetNumberOfTuples(polydata->GetNumberOfPoints());

      polydata->GetPointData()->AddArray(ints);

      ManualMethod(polydata);
      AutomaticMethod(polydata);

      return EXIT_SUCCESS;
    }

    void ManualMethod(vtkPolyData* input)
    {
      unsigned int numberOfArrays = input->GetPointData()->GetNumberOfArrays();
      std::cout << "There are " << numberOfArrays << " arrays." << std::endl;

      vtkSmartPointer<vtkPolyData> newPolyData =
        vtkSmartPointer<vtkPolyData>::New();

      for(unsigned int i = 0; i < numberOfArrays; i++)
      {
        std::cout << "array " << i << ":" << std::endl;
        std::cout << "name: " << input->GetPointData()->GetArrayName(i) << std::endl;
        std::cout << "type: " << input->GetPointData()->GetArray(i)->GetDataType() << std::endl;
        std::cout << std::endl;

        newPolyData->GetPointData()->AddArray(input->GetPointData()->GetArray(i));
      }

      std::cout << "new polydata: " << std::endl;

      for(unsigned int i = 0; i < numberOfArrays; i++)
      {
        std::cout << "array " << i << ":" << std::endl;
        std::cout << "name: " << newPolyData->GetPointData()->GetArrayName(i) << std::endl;
        std::cout << "type: " << newPolyData->GetPointData()->GetArray(i)->GetDataType() << std::endl;
        std::cout << std::endl;
      }

    }

    void AutomaticMethod(vtkPolyData* input)
    {
      unsigned int numberOfArrays = input->GetPointData()->GetNumberOfArrays();
      std::cout << "There are " << numberOfArrays << " arrays." << std::endl;

      vtkSmartPointer<vtkPolyData> newPolyData =
        vtkSmartPointer<vtkPolyData>::New();

      newPolyData->GetPointData()->PassData(input->GetPointData());

      for(unsigned int i = 0; i < numberOfArrays; i++)
      {
        std::cout << "array " << i << ":" << std::endl;
        std::cout << "name: " << input->GetPointData()->GetArrayName(i) << std::endl;
        std::cout << "type: " << input->GetPointData()->GetArray(i)->GetDataType() << std::endl;
        std::cout << std::endl;
      }

      std::cout << "new polydata: " << std::endl;

      for(unsigned int i = 0; i < numberOfArrays; i++)
      {
        std::cout << "array " << i << ":" << std::endl;
        std::cout << "name: " << newPolyData->GetPointData()->GetArrayName(i) << std::endl;
        std::cout << "type: " << newPolyData->GetPointData()->GetArray(i)->GetDataType() << std::endl;
        std::cout << std::endl;
      }

    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(CopyAllArrays)

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

    add_executable(CopyAllArrays MACOSX_BUNDLE CopyAllArrays.cxx )

    target_link_libraries(CopyAllArrays ${VTK_LIBRARIES})

### Download and Build CopyAllArrays

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

    cd CopyAllArrays/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:

    ./CopyAllArrays

WINDOWS USERS

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