# TransformFilter

VTKExamples/Java/PolyData/TransformFilter

### Description

vtkTransformFilter is an object to transform point coordinates, and associated point normals and vectors, as well as cell normals and vectors.

Transformed data array will be stored in a float array or a double array. Other point and cel data are passed through the filter, unless TransformAllInputVectors is set to true, in this case all other 3 components arrays from point and cell data will be transformed as well.

Other Languages

See (Cxx)

### Code

TransformFilter.java

    import vtk.vtkRenderWindow;
    import vtk.vtkActor;
    import vtk.vtkArrowSource;
    import vtk.vtkNativeLibrary;
    import vtk.vtkPolyDataMapper;
    import vtk.vtkNamedColors;
    import vtk.vtkRenderer;
    import vtk.vtkRenderWindowInteractor;
    import vtk.vtkTransform;
    import vtk.vtkTransformFilter;

    public class TransformFilter
    {
      //-----------------------------------------------------------------
      // Load VTK library and print which library was not properly loaded
      static
      {
        if (!vtkNativeLibrary.LoadAllNativeLibraries())
        {
          for (vtkNativeLibrary lib : vtkNativeLibrary.values())
          {
            if (!lib.IsLoaded())
            {
              System.out.println(lib.GetLibraryName() + " not loaded");
            }
          }
        }
        vtkNativeLibrary.DisableOutputWindow(null);
      }
      // -----------------------------------------------------------------

      public static void main(String args[])
      {

        vtkNamedColors colors = new vtkNamedColors();

        //For Actor Color
        double actorColor[] = new double[4];
        //Renderer Background Color
        double Bgcolor[] = new double[4];

        colors.GetColor("SteelBlue", actorColor);
        colors.GetColor("BurlyWood", Bgcolor);

        //Create an Arrow
        vtkArrowSource arrowSource = new vtkArrowSource();

        vtkTransform Transform = new vtkTransform();
        Transform.Scale(5, 1, 1);

        vtkTransformFilter TransformFilter = new vtkTransformFilter();
        TransformFilter.SetTransform(Transform);
        TransformFilter.SetInputConnection(arrowSource.GetOutputPort());
        TransformFilter.SetTransform(Transform);

        vtkPolyDataMapper mapper = new vtkPolyDataMapper();
        mapper.SetInputConnection(TransformFilter.GetOutputPort());
        vtkActor actor = new vtkActor();
        actor.SetMapper(mapper);
        actor.GetProperty().SetColor(actorColor);

        // Create the renderer, render window and interactor.
        vtkRenderer ren = new vtkRenderer();
        vtkRenderWindow renWin = new vtkRenderWindow();
        renWin.AddRenderer(ren);
        vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
        iren.SetRenderWindow(renWin);

        // Visualize the actor
        ren.AddActor(actor);
        ren.SetBackground(Bgcolor);

        renWin.SetSize(300, 300);
        renWin.Render();

        iren.Initialize();
        iren.Start();
      }
    }