MultipleActors

VTKExamples/Java/Visualization/MultipleActors

Description¶

This example creates two spheres and renders them. The idea is to show that each object needs its own mapper and actor and then multiple actors can be added to a renderer.

Other Languages

See (Cxx)

Code¶

MultipleActors.java

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

public class MultipleActors
{
  // -----------------------------------------------------------------
  // 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();

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

    colors.GetColor("White", Bgcolor);

    //Sphere1
    vtkSphereSource sphereSource1 = new vtkSphereSource();
    sphereSource1.SetCenter(0.0, 0.0, 0.0 );
    sphereSource1.SetRadius(4.0);
    sphereSource1.Update();

    vtkPolyDataMapper sphereMapper1  = new vtkPolyDataMapper();
    sphereMapper1 .SetInputData (sphereSource1.GetOutput());

    vtkActor sphereActor1 = new vtkActor();
    sphereActor1.SetMapper(sphereMapper1);

    //Sphere2
    vtkSphereSource sphereSource2 = new vtkSphereSource();
    sphereSource2.SetCenter(10.0, 0.0, 0.0 );
    sphereSource2.SetRadius(3.0);
    sphereSource2.Update();

    vtkPolyDataMapper sphereMapper2  = new vtkPolyDataMapper();
    sphereMapper2 .SetInputData (sphereSource2.GetOutput());

    vtkActor sphereActor2 = new vtkActor();
    sphereActor2.SetMapper(sphereMapper2);

    // 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);

    // Visualise
    ren.AddActor(sphereActor1);
    ren.AddActor(sphereActor2);

    ren.SetBackground(Bgcolor);

    renWin.SetSize(640, 480);
    renWin.Render();

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

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