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# AngleWidget

VTKEx/Java/Widgets/AngleWidget

### Description

Click three points to create an angle. You can then drag the points around.

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See (Cxx)

Question

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### Code

AngleWidget.java

    import vtk.vtkNativeLibrary;
    import vtk.vtkRenderWindowInteractor;
    import vtk.vtkAngleWidget;
    import vtk.vtkNamedColors;
    import vtk.vtkRenderWindow;
    import vtk.vtkRenderer;

    public class AngleWidget {
      //private static final long serialVersionUID = 1L;

      // -----------------------------------------------------------------
      // 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 s[]) {

        vtkNamedColors Color = new vtkNamedColors();

        //For Renderer Background Color
        double BgColor[] = new double[4];
        //Change Color Name to Use your own Color for Renderer Background
        Color.GetColor("Black",BgColor);

        // An interactor
        vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();

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

        // Angle Widget
        vtkAngleWidget angleWidget = new vtkAngleWidget();
        angleWidget.SetInteractor(iren);
        angleWidget .CreateDefaultRepresentation();

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

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

      }
    }