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IDProjectCategoryView StatusDate SubmittedLast Update
0008317VTK(No Category)public2008-12-18 11:142016-08-12 09:55
ReporterJNaresh 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0008317: Rendering is slow compared to Java3D
DescriptionI have created a scene with 10x10x10 spheres. I am using VTK with java wrapper. When I try to rotate the model, the rendering is sluggish compared to Java3D. I have attached the sample code below.

//-----Imports----------------------------------------------------------------
import javax.swing.JFrame;

import vtk.vtkActor;
import vtk.vtkLight;
import vtk.vtkPolyDataMapper;
import vtk.vtkProperty;
import vtk.vtkRenderer;
import vtk.vtkRenderWindowPanel;
import vtk.vtkSphereSource;


/**
 * This class renders multiple spheres in VTK window. This can be used
 * for stress testing Java3D.
 */
public class MultipleSpheres
{
   /**
    * Number of spheres in X direction.
    */
   private int m_nX = 10;

   /**
    * Number of spheres in Y direction.
    */
   private int m_nY = 10;

   /**
    * Number of spheres in Z direction.
    */
   private int m_nZ = 10;

   /**
    * RenderWindow panel.
    */
   private vtkRenderWindowPanel m_zPanel;

   /**
    * Reference to JFrame.
    */
   private JFrame m_zFrame;

   static
   {
      System.loadLibrary("vtkCommonJava");
      System.loadLibrary("vtkFilteringJava");
      System.loadLibrary("vtkIOJava");
      System.loadLibrary("vtkImagingJava");
      System.loadLibrary("vtkGraphicsJava");
      System.loadLibrary("vtkRenderingJava");
      System.loadLibrary("vtkInfovisJava");
      System.loadLibrary("vtkViewsJava");

   } // static

   /**
    * Constructs MultipleSpheres object.
    *
    * @param ascArg Array of command line arguments.
    */
   public MultipleSpheres( String [] ascArg )
   {
      for( int i = 0; i < ascArg.length; i++ )
      {
         if ( ascArg[i].equalsIgnoreCase("-nx") && (i+1) < ascArg.length )
         {
            m_nX = Integer.parseInt(ascArg[++i]);
         }
         else if ( ascArg[i].equalsIgnoreCase("-ny") &&
                   (i+1) < ascArg.length )
         {
            m_nY = Integer.parseInt(ascArg[++i]);
         }
         else if ( ascArg[i].equalsIgnoreCase("-nZ") &&
                   (i+1) < ascArg.length )
         {
            m_nZ = Integer.parseInt(ascArg[++i]);
         }
      }

      buildUI();
      buildScene();

      m_zFrame.setVisible(true);

   } // Constructor MultipleSpheres

   /**
    * Builds the UI.
    */
   private void buildUI()
   {
      m_zPanel = new vtkRenderWindowPanel();
      m_zPanel.GetRenderWindow().SwapBuffersOn();

      m_zFrame = new JFrame("MultipleSpheres");
      m_zFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      m_zFrame.add("Center", m_zPanel);
      m_zFrame.setSize(500, 500);

   } // buildUI

   /**
    * Builds the scene.
    */
   private void buildScene()
   {
      vtkSphereSource zSphere = new vtkSphereSource();
      zSphere.SetThetaResolution(100);
      zSphere.SetPhiResolution(50);
      zSphere.SetRadius(1.0);

      vtkPolyDataMapper zPolyDataMapper = new vtkPolyDataMapper();
      zPolyDataMapper.SetInputConnection(zSphere.GetOutputPort());

      vtkProperty zProperty = new vtkProperty();
      zProperty.SetColor(1.0, 0.3882, 0.2784);
      zProperty.SetDiffuse(0.7);
      zProperty.SetSpecular(0.4);
      zProperty.SetSpecularPower(30);

      vtkRenderer zRenderer = m_zPanel.GetRenderer();

      double dX = -m_nX;
      for( int i = 0; i < m_nX; i++ )
      {
         double dY = -m_nY;
         for( int j = 0; j < m_nY; j++ )
         {
            double dZ = -m_nZ;
            for( int k = 0; k < m_nZ; k++ )
            {
               System.out.println("X: " + dX + ", Y: " + dY +
                                  ", Z: " + dZ);
               vtkActor zActor = new vtkActor();
               zActor.SetMapper(zPolyDataMapper);
               zActor.SetProperty(zProperty);
               zActor.SetPosition(dX, dY, dZ);

               zRenderer.AddActor(zActor);

               dZ += 2.0;
            }

            dY += 2.0;
         }

         dX += 2.0;
      }

      vtkLight zLight1 = new vtkLight();
      zLight1.SetFocalPoint(1.875, 0.6125, 0);
      zLight1.SetPosition(0.875, 1.6125, 1);
      zRenderer.AddLight(zLight1);

      vtkLight zLight2 = new vtkLight();
      zLight2.SetFocalPoint(1.875, 0.6125, 0);
      zLight2.SetPosition(9, 9, -9);
      zRenderer.AddLight(zLight2);

      vtkLight zLight3 = new vtkLight();
      zLight3.SetFocalPoint(1.875, 0.6125, 0);
      zLight3.SetPosition(0.875, -9, -9);
      zRenderer.AddLight(zLight3);

      zRenderer.GetActiveCamera().SetFocalPoint(0, 0, 0);
      zRenderer.GetActiveCamera().SetPosition(0, 0, 1);
      zRenderer.GetActiveCamera().SetViewUp(0, 1, 0);
      zRenderer.GetActiveCamera().ParallelProjectionOn();
      zRenderer.ResetCamera();
// zRenderer.GetActiveCamera().SetParallelScale(1.5);

   } // buildScene

   /**
    * Main function.
    *
    * @param ascArg Array of command line arguments.
    */
   public static void main( String ascArg[] )
   {
      MultipleSpheres zMultSpheres = new MultipleSpheres(ascArg);

   } // main

} // Class MultipleSpheres
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  Notes
(0037049)
Kitware Robot (administrator)
2016-08-12 09:55

 Resolving issue as `moved`.

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 Issue History
Date Modified Username Field Change
2008-12-18 11:14 JNaresh New Issue
2011-06-16 13:11 Zack Galbreath Category => (No Category)
2016-08-12 09:55 Kitware Robot Note Added: 0037049
2016-08-12 09:55 Kitware Robot Status expired => closed
2016-08-12 09:55 Kitware Robot Resolution open => moved
2016-08-12 09:55 Kitware Robot Assigned To => Kitware Robot

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