ImagePlaneWidget

Description¶

This 3D widget defines a plane that can be interactively placed in an image volume.

A nice feature of the object is that the vtkImagePlaneWidget, like any 3D widget, will work with the current interactor style.

That is, if vtkImagePlaneWidget does not handle an event, then all other registered observers (including the interactor style) have an opportunity to process the event. Otherwise, the vtkImagePlaneWidget will terminate the processing of the event that it handles.

Other languages

See (Cxx), (PythonicAPI)

Question

If you have a question about this example, please use the VTK Discourse Forum

Code¶

ImagePlaneWidget.java

import vtk.vtkNativeLibrary;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkSphereSource;
import vtk.vtkActor;
import vtk.vtkPolyDataMapper;
import vtk.vtkInteractorStyleTrackballCamera;
import vtk.vtkImagePlaneWidget;

public class ImagePlaneWidget
{
  // -----------------------------------------------------------------
  // 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[]) 
  {
    //Sphere
    vtkSphereSource sphereSource = new vtkSphereSource();
    sphereSource.Update();

    //Create a mapper and actor
    vtkPolyDataMapper mapper = new vtkPolyDataMapper();
    mapper.SetInputConnection(sphereSource.GetOutputPort());

    vtkActor actor = new vtkActor();
    actor.SetMapper(mapper);

    //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);

    vtkInteractorStyleTrackballCamera style = new vtkInteractorStyleTrackballCamera();
    iren.SetInteractorStyle( style );

    vtkImagePlaneWidget planeWidget = new vtkImagePlaneWidget();
    planeWidget.SetInteractor(iren);
    planeWidget.TextureVisibilityOff();

    double origin[] = new double[]{0, 1, 0};
    planeWidget.SetOrigin(origin);
    planeWidget.UpdatePlacement();

    ren.AddActor(actor);

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

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