# ComplexV

VTKExamples/Cxx/Visualization/ComplexV

### Description

ComplexV frm the VTK Textbook. The original example was written in TCL.

### Code

ComplexV.cxx

    #include <vtkSmartPointer.h>

    #include <vtkHedgeHog.h>
    #include <vtkOutlineFilter.h>

    #include <vtkLookupTable.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkStructuredPointsReader.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkActor.h>
    #include <vtkProperty.h>
    #include <vtkCamera.h>

    int main (int /* argc */, char *argv[])
    {
      vtkSmartPointer<vtkStructuredPointsReader> reader =
        vtkSmartPointer<vtkStructuredPointsReader>::New();
      reader->SetFileName(argv[1]);

      vtkSmartPointer<vtkHedgeHog> hhog =
        vtkSmartPointer<vtkHedgeHog>::New();
      hhog->SetInputConnection(reader->GetOutputPort());
      hhog->SetScaleFactor(0.3);

      vtkSmartPointer<vtkLookupTable> lut =
        vtkSmartPointer<vtkLookupTable>::New();
    //  lut->SetHueRange(.667, 0.0);
      lut->Build();

      vtkSmartPointer<vtkPolyDataMapper> hhogMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      hhogMapper->SetInputConnection(hhog->GetOutputPort());
      hhogMapper->SetScalarRange(50, 550);
      hhogMapper->SetLookupTable(lut);

      vtkSmartPointer<vtkActor> hhogActor =
        vtkSmartPointer<vtkActor>::New();
      hhogActor->SetMapper(hhogMapper);

      vtkSmartPointer<vtkOutlineFilter> outline =
        vtkSmartPointer<vtkOutlineFilter>::New();
      outline->SetInputConnection(reader->GetOutputPort());

      vtkSmartPointer<vtkPolyDataMapper> outlineMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      outlineMapper->SetInputConnection(outline->GetOutputPort());

      vtkSmartPointer<vtkActor> outlineActor =
        vtkSmartPointer<vtkActor>::New();
      outlineActor->SetMapper(outlineMapper);
      outlineActor->GetProperty()->SetColor(0, 0, 0);

      vtkSmartPointer<vtkRenderer> aRenderer =
        vtkSmartPointer<vtkRenderer>::New();
      vtkSmartPointer<vtkRenderWindow> aRenderWindow =
        vtkSmartPointer<vtkRenderWindow>::New();
      aRenderWindow->AddRenderer(aRenderer);
      vtkSmartPointer<vtkRenderWindowInteractor> anInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      anInteractor->SetRenderWindow(aRenderWindow);
      aRenderWindow->SetSize(640, 480);

      aRenderer->AddActor(outlineActor);
      aRenderer->AddActor(hhogActor);

      aRenderer->SetBackground(.5, .5, .5);

      // Generate an interesting view

      aRenderer->GetActiveCamera()->SetFocalPoint(0,0,0);
      aRenderer->GetActiveCamera()->SetPosition(1,0,0);
      aRenderer->GetActiveCamera()->SetViewUp(0,0,1);
      aRenderer->ResetCamera();

      aRenderer->GetActiveCamera()->Azimuth(60);
      aRenderer->GetActiveCamera()->Elevation(30);
      aRenderer->GetActiveCamera()->Dolly(1.1);
      aRenderer->ResetCameraClippingRange();

      aRenderWindow->Render();

      // interact with data
      anInteractor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(ComplexV)

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

    add_executable(ComplexV MACOSX_BUNDLE ComplexV.cxx )

    target_link_libraries(ComplexV ${VTK_LIBRARIES})

### Download and Build ComplexV

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

    cd ComplexV/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:

    ./ComplexV

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.