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Hi I recently tried to run a java application with JOGL without much success.
The GLCanvas refuses to show unless I add an animator to it or if I resize the window.
Right now it displays the picture for a few milliseconds and then it disappears.
Is this a common problem or am I just missing out on some small detail.
package windows;
import javax.media.opengl.*;
import javax.media.opengl.awt.*;
import com.jogamp.opengl.util.FPSAnimator;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MainWindow implements GLEventListener
{
JFrame f;
GLProfile glp;
GLCapabilities caps;
GLCanvas canvas;
public MainWindow()
{
glp = GLProfile.getDefault();
caps = new GLCapabilities(glp);
canvas = new GLCanvas(caps);
canvas.addGLEventListener(this);
f = new JFrame("Test");
f.setSize(500,500);
f.getContentPane().setLayout(null);
canvas.setBounds(new Rectangle(0,0,400,400));
f.getContentPane().add(canvas);
f.add(canvas);
f.setVisible(true);
}
public void update()
{
}
public void render(GLAutoDrawable drawable)
{
GL2 gl = drawable.getGL().getGL2();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glBegin(GL.GL_TRIANGLES);
gl.glColor3f(1,0,0);
gl.glVertex2f(-1,-1);
gl.glColor3f(0,1,0);
gl.glVertex2f(0,1);
gl.glColor3f(0,0,1);
gl.glVertex2f(1,-1);
gl.glEnd();
drawable.swapBuffers();
gl.glFlush();
}
@Override
public void display(GLAutoDrawable arg0) {
update();
render(arg0);
}
@Override
public void dispose(GLAutoDrawable arg0) {
// TODO Auto-generated method stub
}
@Override
public void init(GLAutoDrawable arg0) {
// TODO Auto-generated method stub
}
@Override
public void reshape(GLAutoDrawable arg0, int arg1, int arg2, int arg3,
int arg4) {
// TODO Auto-generated method stub
}
public static void main(String[] args) {
new MainWindow();
}
}
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