# ReadPLOT3D

VTKExamples/Cxx/IO/ReadPLOT3D

### Code

ReadPLOT3D.cxx

    #include <vtkVersion.h>
    #include <vtkPolyData.h>
    #if VTK_MAJOR_VERSION <= 5
    #include <vtkPLOT3DReader.h>
    #else
    #include <vtkMultiBlockPLOT3DReader.h>
    #include <vtkMultiBlockDataSet.h>
    #endif
    #include <vtkSmartPointer.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkActor.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkStructuredGridGeometryFilter.h>

    int main ( int argc, char *argv[] )
    {
      if(argc < 3)
      {
        std::cout << "Required parameters: XYZFilename.bin QFileName.bin" << std::endl;
        return EXIT_FAILURE;
      }

      std::string xyzFilename = argv[1];
      std::string qFilename = argv[2];

    #if VTK_MAJOR_VERSION <= 5
      vtkSmartPointer<vtkPLOT3DReader> reader =
        vtkSmartPointer<vtkPLOT3DReader>::New();
    #else
      vtkSmartPointer<vtkMultiBlockPLOT3DReader> reader =
        vtkSmartPointer<vtkMultiBlockPLOT3DReader>::New();
    #endif
      reader->SetXYZFileName(xyzFilename.c_str());
      reader->SetQFileName(qFilename.c_str());
      reader->SetScalarFunctionNumber(100);
      reader->SetVectorFunctionNumber(202);
      reader->Update();

      vtkSmartPointer<vtkStructuredGridGeometryFilter> geometryFilter =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
    #if VTK_MAJOR_VERSION <= 5
      geometryFilter->SetInputConnection(reader->GetOutputPort());
    #else
      geometryFilter->SetInputData(reader->GetOutput()->GetBlock(0));
    #endif
      geometryFilter->Update();

      // Visualize
      vtkSmartPointer<vtkPolyDataMapper> mapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapper->SetInputConnection(geometryFilter->GetOutputPort());
      mapper->ScalarVisibilityOff();

      vtkSmartPointer<vtkActor> actor =
        vtkSmartPointer<vtkActor>::New();
      actor->SetMapper(mapper);

      vtkSmartPointer<vtkRenderer> renderer =
        vtkSmartPointer<vtkRenderer>::New();
      vtkSmartPointer<vtkRenderWindow> renderWindow =
        vtkSmartPointer<vtkRenderWindow>::New();
      renderWindow->AddRenderer(renderer);
      vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      renderWindowInteractor->SetRenderWindow(renderWindow);

      renderer->AddActor(actor);
      renderer->SetBackground(.3, .6, .3); // Background color green

      renderWindow->Render();
      renderWindowInteractor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(ReadPLOT3D)

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

    add_executable(ReadPLOT3D MACOSX_BUNDLE ReadPLOT3D.cxx )

    target_link_libraries(ReadPLOT3D ${VTK_LIBRARIES})

### Download and Build ReadPLOT3D

Click here to download ReadPLOT3D and its CMakeLists.txt file. Once the tarball ReadPLOT3D.tar has been downloaded and extracted,

    cd ReadPLOT3D/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:

    ./ReadPLOT3D

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.