java.lang.IllegalArgumentException: Drawable already added to animator

[Anton Shterenlikht]

I advanced a step further.

I can compile this JOGL program:

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.*;
import javax.media.opengl.awt.GLCanvas;
import com.jogamp.opengl.util.*;

public class SimpleScene implements GLEventListener {

private double theta = 0;
private double s = 0;
private double c = 0;

public static void main(String[] args) {
GLProfile glp = GLProfile.getDefault();
GLCapabilities caps = new GLCapabilities(glp);
GLCanvas canvas = new GLCanvas(caps);

Frame frame = new Frame("AWT Window Test");
frame.setSize(300, 300);
frame.add(canvas);
frame.setVisible(true);

frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

canvas.addGLEventListener(new SimpleScene());

FPSAnimator animator = new FPSAnimator(canvas, 60);
animator.add(canvas);
animator.start();
}

@Override
public void display(GLAutoDrawable drawable) {
update();
render(drawable);
}

@Override
public void dispose(GLAutoDrawable drawable) {
}

@Override
public void init(GLAutoDrawable drawable) {
}

@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {
}

private void update() {
theta += 0.01;
s = Math.sin(theta);
c = Math.cos(theta);
}

private void render(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();

gl.glClear(GL.GL_COLOR_BUFFER_BIT);

// draw a triangle filling the window
gl.glBegin(GL.GL_TRIANGLES);
gl.glColor3f(1, 0, 0);
gl.glVertex2d(-c, -c);
gl.glColor3f(0, 1, 0);
gl.glVertex2d(0, c);
gl.glColor3f(0, 0, 1);
gl.glVertex2d(s, -s);
gl.glEnd();
}
}

with

$ javac SimpleScene.java
warning: Supported source version 'RELEASE_6' from annotation processor 'com.jogamp.gluegen.structgen.CStructAnnotationProcessor' less than -source '1.8'
1 warning

but when I run it, I get this error:

$ java SimpleScene
Exception in thread "main" java.lang.IllegalArgumentException: Drawable already added to animator: com.jogamp.opengl.util.FPSAnimator[started false, animating false, paused false, drawable 1, totals[dt 0, frames 0, fps 0.0], modeBits 1, init'ed true, animThread null, exclCtxThread false(null)], AWT-GLCanvas[Realized false,
jogamp.opengl.x11.glx.X11OnscreenGLXDrawable,
Factory jogamp.opengl.x11.glx.X11GLXDrawableFactory@91161c7,
handle 0x2600020,
Drawable size 286x269 surface[286x269],
AWT[pos 7/24, size 286x269,
visible true, displayable true, showing true,
AWTGraphicsConfiguration[AWTGraphicsScreen[AWTGraphicsDevice[type .awt, connection :0.0, unitID 0, awtDevice X11GraphicsDevice[screen=0], handle 0x0], idx 0],
chosen GLCaps[glx vid 0xba, fbc 0x81: rgba 8/8/8/0, opaque, accum-rgba 0/0/0/0, dp/st/ms 24/8/0, dbl, mono , hw, GLProfile[GL2/GL2.hw], on-scr[.]],
requested GLCaps[rgba 8/8/8/0, opaque, accum-rgba 0/0/0/0, dp/st/ms 16/0/0, dbl, mono , hw, GLProfile[GL2/GL2.hw], on-scr[.]],
X11GraphicsConfig[dev=X11GraphicsDevice[screen=0],vis=0xba],
encapsulated X11GLXGraphicsConfiguration[X11GraphicsScreen[X11GraphicsDevice[type .x11, connection :0.0, unitID 0, handle 0x8d73fd800, owner true, JAWTToolkitLock[obj 0x604ed9f0, isOwner false, <6a4f787b, 685cb137>[count 0, qsz 0, owner <NULL>]]], idx 0], visualID 0xba, fbConfigID 0x81,
requested GLCaps[rgba 8/8/8/0, opaque, accum-rgba 0/0/0/0, dp/st/ms 16/0/0, dbl, mono , hw, GLProfile[GL2/GL2.hw], on-scr[.]],
chosen GLCaps[glx vid 0xba, fbc 0x81: rgba 8/8/8/0, opaque, accum-rgba 0/0/0/0, dp/st/ms 24/8/0, dbl, mono , hw, GLProfile[GL2/GL2.hw], on-scr[.]]]]]]
at com.jogamp.opengl.util.AnimatorBase.add(AnimatorBase.java:201)
at SimpleScene.main(SimpleScene.java:33)

Anything obvious?

Thanks

Anton
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[Michael Zhilin]

I suppose commenting line 33 may resolve issue. :) Because animator
constructor already passed canvas.

Thanks!

On Mon, May 16, 2016 at 7:31 PM, Anton Shterenlikht <me...@bris.ac.uk>
wrote:

[Anton Shterenlikht]

>From miz...@gmail.com Mon May 16 21:31:44 2016

>
>I suppose commenting line 33 may resolve issue. :) Because animator
>constructor already passed canvas.

Thank you!

Yes, you are right, commenting this line
made the animation run smoothly.

I guess I'll have to look for more
complex JOGL examples. But for now I have
to conclude that java/opengl works fine
locally. Perhaps my program is some version
mismatch between remote and local java or
opengl installations.

Many thanks for all replies!