[vtkusers] Using VTK with Java on Mac OS X

[Robert.Nelson at tessella.com]

Tessella Ref: NPD/3797/PR/TN/2004FEB20/14:02:32

Hi,

I've been trying to get Java/VTK to work under OSX. My question is should 
it work and if so, what am I doing wrong?

I have OS X version 10.2.8 and Java v1.4.1_01-69.1

I had to perform the following hack (found in the mailing list archive) to 
get the java bindings to build:
> in VTK/Common/vtkJavaAwt.h change lines 86 through 88 from:-
> 
> JAWT_MacDrawingSurfaceInfo* dsi_mac;
>    dsi_mac = (JAWT_MacDrawingSurfaceInfo*)dsi->platformInfo;
>    temp0->SetWindowId((void *)dsi_mac->fQDWindow);
> 
> to:-
> 
> JAWT_MacOSXDrawingSurfaceInfo* dsi_mac;
>    dsi_mac = (JAWT_MacOSXDrawingSurfaceInfo*)dsi->platformInfo;
>    temp0->SetWindowId((void *)dsi_mac->cgWindowID);

I then have something which does not work. The program I want to run is 
too large so I've created the following program which works on the PC - 
you get a Cone which can be rotated with the mouse. Under CARBON I just 
get a blank window. Under COCOA I get a bus error:
#0  0x90986b18 in glMatrixMode ()
#1  0x0668159c in vtkCocoaRenderWindow::OpenGLInit() ()
#2  0x06681bd0 in vtkCocoaRenderWindow::WindowInitialize() ()
#3  0x06680b38 in vtkCocoaRenderWindow::Start() ()
#4  0x066449ec in vtkRenderWindow::DoStereoRender() ()
#5  0x066449b0 in vtkRenderWindow::DoFDRender() ()
#6  0x066445c4 in vtkRenderWindow::DoAARender() ()
#7  0x06643dcc in vtkRenderWindow::Render() ()
...

The program is:
import java.awt.*;
import javax.swing.*;

public class ConeFrame extends JFrame {
    public ConeFrame() { }

    public static void main(String [] args) {
        ConePanel panel= new ConePanel();
        panel.drawMe();
        JFrame frame= new ConeFrame();
        frame.getContentPane().add(panel);
        frame.setSize(600,600);
        frame.show();
    }
}
and:
import vtk.*;
import java.awt.*;

public class ConePanel extends vtk.vtkPanel {
 public ConePanel(){ }
 
  public void drawMe () {
    vtkConeSource cone = new vtkConeSource();
    cone.SetHeight( 3.0 );
    cone.SetRadius( 1.0 );
    cone.SetResolution( 10 );
    vtkPolyDataMapper coneMapper = new vtkPolyDataMapper();
    coneMapper.SetInput( cone.GetOutput() );
    vtkActor coneActor = new vtkActor();
    coneActor.SetMapper( coneMapper );
    vtkRenderer ren1 = GetRenderer(); //new vtkRenderer();
    ren1.AddActor( coneActor );
    ren1.SetBackground( 0.1, 0.2, 0.4 );
        enableEvents(AWTEvent.WINDOW_EVENT_MASK); 
   } 
}

Has anyone managed to do this in Java on the Mac and if so how?

Thanks for your help,

Rob


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