[vtkusers] Problem with Render() in Java/Linux

[Toh Da Jun]

Please ignore my previous post. I've found the bug...and it was in
MediumActor. Where the actor was not added to the renderer at all.

tohdj


On Tue, 2005-02-08 at 10:25, Toh Da Jun wrote:
> Hi,
> 
> I'm using Linux + Java and making use of the vtkPanel and vtkCanvas to
> develop a program.
> 
> After I had set up the renderwindow etc etc, and my GUI is up and
> running, I clicked on a Menu option (public void ViewMedium()) and it
> adds an actor into the Renderer.
> 
> When I did a count of the number of visible actors in the Renderer, the
> number is correct, but I cannot see the new actor in the display.
> 
> Anybody know what's wrong with this? Thanks
> 
> 
> tohdj
> 
> =======================================================================
> import java.awt.*;
> import java.awt.event.*;
> import javax.swing.*;
> import vtk.*;
> 
> public class MCSCanvas extends JPanel {
>   private vtkCanvas renWin;
>   private AxesActor MCSAxesActor;
>   private MediumActor MCSMediumActor;
>   private boolean isDisplayed = false;
> 
>   public MCSCanvas() {
>     setLayout(new BorderLayout());
> 
>     // Create the buttons.
>     renWin = new vtkCanvas();
>     add(renWin, BorderLayout.CENTER);
> 
>     AxesActor MCSAxesActor = new AxesActor(renWin.GetRenderer());
>     renWin.GetRenderer().AddActor(MCSAxesActor);
> 
>     MCSMediumActor = new MediumActor(renWin.GetRenderer());
>   }
> 
>   public void ViewMedium()
>   {
>     if (isDisplayed == false) {
> 	System.out.println(renWin.GetRenderer().VisibleActorCount());
> 	renWin.GetRenderer().AddActor(MCSMediumActor);
> 	renWin.Render();
>         isDisplayed = true;
> 	System.out.println("ViewMedium ON");
> 	System.out.println(renWin.GetRenderer().VisibleActorCount());
>     }
>     else {
> 	System.out.println(renWin.GetRenderer().VisibleActorCount());
> 	renWin.GetRenderer().RemoveActor(MCSMediumActor);
> 	renWin.Render();
>         isDisplayed = false;
> 	System.out.println("ViewMedium OFF");
> 	System.out.println(renWin.GetRenderer().VisibleActorCount());
>     }
>   }
>   
>   public void reSize()
>   {
>     renWin.reSize();
>   }
> 
>   public static void main(String s[]) 
>   {
>     MCSCanvas panel = new MCSCanvas();
>     MCSCanvas panel2 = new MCSCanvas();
> 	
>     JFrame frame = new JFrame("VTK Canvas Test!");
>     frame.getContentPane().setLayout(new GridLayout(2,1));
>     frame.addWindowListener(new WindowAdapter() 
>       {
>         public void windowClosing(WindowEvent e) {System.exit(0);}
>       });
>     frame.getContentPane().add(panel);
>     frame.getContentPane().add(panel2);
>     frame.pack();
>     frame.setVisible(true);
>   }
> }
> 
> 
> 
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