Using JOGL in Java Web Start
You can use JOGL in a Java Web Start (JWS) application, which lets you launch a full-featured, standalone Java program from a web page. This page shows an example of how to do this. The example program just draws one triangle that fills a resizable window.
Base class
First, a base class that we've used before here. This class draws one triangle, abstracting out all the pure OpenGL calls that don't depend on the choice of window toolkit.
package name.wadewalker.jogl2tests.onetriangle;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.glu.GLU;
public class OneTriangle {
protected static void setup( GL2 gl2, int width, int height ) {
gl2.glMatrixMode( GL2.GL_PROJECTION );
gl2.glLoadIdentity();
// coordinate system origin at lower left with width and height same as the window
GLU glu = new GLU();
glu.gluOrtho2D( 0.0f, width, 0.0f, height );
gl2.glMatrixMode( GL2.GL_MODELVIEW );
gl2.glLoadIdentity();
gl2.glViewport( 0, 0, width, height );
}
protected static void render( GL2 gl2, int width, int height ) {
gl2.glClear( GL.GL_COLOR_BUFFER_BIT );
// draw a triangle filling the window
gl2.glLoadIdentity();
gl2.glBegin( GL.GL_TRIANGLES );
gl2.glColor3f( 1, 0, 0 );
gl2.glVertex2f( 0, 0 );
gl2.glColor3f( 0, 1, 0 );
gl2.glVertex2f( width, 0 );
gl2.glColor3f( 0, 0, 1 );
gl2.glVertex2f( width / 2, height );
gl2.glEnd();
}
}
Drawing a triangle with AWT
Now, a class that draws the triangle in an AWT Frame. Java Web Start can use any Java windowing toolkit, we've just chosen this one for convenience.
package name.wadewalker.jogl2tests.onetriangle;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLProfile;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.awt.GLCanvas;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
/**
* A minimal program that draws with JOGL in an AWT Frame.
*
* @author Wade Walker
*/
public class OneTriangleAWT {
static {
// setting this true causes window events not to get sent on Linux if you run from inside Eclipse
GLProfile.initSingleton( false );
}
public static void main( String [] args ) {
GLProfile glprofile = GLProfile.getDefault();
GLCapabilities glcapabilities = new GLCapabilities( glprofile );
final GLCanvas glcanvas = new GLCanvas( glcapabilities );
glcanvas.addGLEventListener( new GLEventListener() {
@Override
public void reshape( GLAutoDrawable glautodrawable, int x, int y, int width, int height ) {
OneTriangle.setup( glautodrawable.getGL().getGL2(), width, height );
}
@Override
public void init( GLAutoDrawable glautodrawable ) {
}
@Override
public void dispose( GLAutoDrawable glautodrawable ) {
}
@Override
public void display( GLAutoDrawable glautodrawable ) {
OneTriangle.render( glautodrawable.getGL().getGL2(), glautodrawable.getWidth(), glautodrawable.getHeight() );
}
});
final Frame frame = new Frame( "One Triangle AWT" );
frame.add( glcanvas );
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent windowevent ) {
frame.remove( glcanvas );
frame.dispose();
System.exit( 0 );
}
});
frame.setSize( 640, 480 );
frame.setVisible( true );
}
}
Setting up the application directory
- Create a directory to hold your JWS application
- Create a subdirectory =name/wadewalker/jogl2tests/onetriangle inside= your application directory. Or if you changed the packages of the files above, create a subdirectory that matches your package names.
- Save the files above as =OneTriangle.java= and =OneTriangleAWT.java= inside the subdirectory.
- Copy all JOGL JARs into the application directory. You can get the JARs from a JOGL autobuild here. Usually I pick the latest =jogl-<build number>-<date>= link, download all the =.7z= files inside, and unzip them with 7zip. These are the JARs you should have in your directory:
gluegen-rt.jar nativewindow.all.jar jogl.all.jar newt.all.jar gluegen-rt-natives-windows-i586.jar jogl-natives-windows-i586.jar nativewindow-natives-windows-i586.jar newt-natives-windows-i586.jar gluegen-rt-natives-windows-amd64.jar jogl-natives-windows-amd64.jar nativewindow-natives-windows-amd64.jar newt-natives-windows-amd64.jar gluegen-rt-natives-linux-i586.jar jogl-natives-linux-i586.jar nativewindow-natives-linux-i586.jar newt-natives-linux-i586.jar gluegen-rt-natives-linux-amd64.jar jogl-natives-linux-amd64.jar nativewindow-natives-linux-amd64.jar newt-natives-linux-amd64.jar gluegen-rt-natives-macosx-universal.jar jogl-natives-macosx-universal.jar nativewindow-natives-macosx-universal.jar newt-natives-macosx-universal.jar
Compiling and JARing your program
Testing your program outside JWS
jarsigner -keystore testKeys gluegen-rt.jar ww jarsigner -keystore testKeys nativewindow.all.jar ww jarsigner -keystore testKeys jogl.all.jar ww jarsigner -keystore testKeys newt.all.jar ww jarsigner -keystore testKeys gluegen-rt-natives-windows-i586.jar ww jarsigner -keystore testKeys jogl-natives-windows-i586.jar ww jarsigner -keystore testKeys nativewindow-natives-windows-i586.jar ww jarsigner -keystore testKeys newt-natives-windows-i586.jar ww jarsigner -keystore testKeys gluegen-rt-natives-windows-amd64.jar ww jarsigner -keystore testKeys jogl-natives-windows-amd64.jar ww jarsigner -keystore testKeys nativewindow-natives-windows-amd64.jar ww jarsigner -keystore testKeys newt-natives-windows-amd64.jar ww jarsigner -keystore testKeys gluegen-rt-natives-linux-i586.jar ww jarsigner -keystore testKeys jogl-natives-linux-i586.jar ww jarsigner -keystore testKeys nativewindow-natives-linux-i586.jar ww jarsigner -keystore testKeys newt-natives-linux-i586.jar ww jarsigner -keystore testKeys gluegen-rt-natives-linux-amd64.jar ww jarsigner -keystore testKeys jogl-natives-linux-amd64.jar ww jarsigner -keystore testKeys nativewindow-natives-linux-amd64.jar ww jarsigner -keystore testKeys newt-natives-linux-amd64.jar ww jarsigner -keystore testKeys gluegen-rt-natives-macosx-universal.jar ww jarsigner -keystore testKeys jogl-natives-macosx-universal.jar ww jarsigner -keystore testKeys nativewindow-natives-macosx-universal.jar ww jarsigner -keystore testKeys newt-natives-macosx-universal.jar ww