Latest posts of: ajith_kgs - Java-Gaming.org

Hi. I am a beginner in JOGL and I was trying out some tutorials I got from nehe.gamedev.net (for c / c++)..

I hit a snag when I was doing the 3d shapes tutorial, the tutorial says, that we need to move the drawing point to the loc (-1.5, 0, -6.0), using glTranslatef() func. I tried the same but I am getting just a black screen. I tried the code without changing the drawing point, i.e leaving it at its original place (0, 0, 0), then I could see a very big pyramid rotating. Here is the code. I am using eclipse, with the latest JRE and JOGL library. Can somebody please tell me, what I am doing wrong. Cheesy

Thanks in advance.

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import javax.media.opengl.*;
import com.sun.opengl.util.Animator;
import javax.media.opengl.GLEventListener;
import java.awt.*;
import java.awt.event.*;

class SimpleEventListener implements GLEventListener{
   
   float rt;
   Animator anim;
   
   public void init(GLAutoDrawable drawable){
      
      GL gl = drawable.getGL();
      gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
            
      rt=0.0f;
      anim= new Animator(drawable);
      anim.start();
      
   }
   public void display(GLAutoDrawable drawable){
      
      GL gl = drawable.getGL();
      
      gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT );
        gl.glLoadIdentity();
        
        gl.glTranslatef(-1.5f, 0.0f, -6.0f);
        gl.glRotatef(rt, 0.0f, 1.0f, 0.0f);
      
      gl.glBegin(GL.GL_TRIANGLES);
      
      gl.glColor3f(1.0f,0.0f,0.0f);         
      gl.glVertex3f( 0.0f, 1.0f, 0.0f);
      gl.glColor3f(0.0f,1.0f,0.0f);         
      gl.glVertex3f(-1.0f,-1.0f, 1.0f);      
      gl.glColor3f(0.0f,0.0f,1.0f);         
      gl.glVertex3f( 1.0f,-1.0f, 1.0f);      
      gl.glColor3f(1.0f,0.0f,0.0f);         
      gl.glVertex3f( 0.0f, 1.0f, 0.0f);         
      gl.glColor3f(0.0f,0.0f,1.0f);         
      gl.glVertex3f( 1.0f,-1.0f, 1.0f);      
      gl.glColor3f(0.0f,1.0f,0.0f);         
      gl.glVertex3f( 1.0f,-1.0f, -1.0f);      
      gl.glColor3f(1.0f,0.0f,0.0f);         
      gl.glVertex3f( 0.0f, 1.0f, 0.0f);         
      gl.glColor3f(0.0f,1.0f,0.0f);         
      gl.glVertex3f( 1.0f,-1.0f, -1.0f);         
      gl.glColor3f(0.0f,0.0f,1.0f);         
      gl.glVertex3f(-1.0f,-1.0f, -1.0f);         
      gl.glColor3f(1.0f,0.0f,0.0f);         
      gl.glVertex3f( 0.0f, 1.0f, 0.0f);         
      gl.glColor3f(0.0f,0.0f,1.0f);         
      gl.glVertex3f(-1.0f,-1.0f,-1.0f);         
      gl.glColor3f(0.0f,1.0f,0.0f);         
      gl.glVertex3f(-1.0f,-1.0f, 1.0f);   
      
       gl.glEnd();
               
        rt+=0.2f;
        
   }
   public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h){}
   public void displayChanged(GLAutoDrawable drawable, boolean b1, boolean b2){}
   
}
public class SimpleTest {

   public static void main(String[] args)
   {
      Frame frame= new Frame("SimpleTest");
   
      GLCanvas canvas= new GLCanvas();
      SimpleEventListener listener= new SimpleEventListener();
   
      frame.setSize(640, 480);
      frame.add(canvas);
      frame.setVisible(true);
      
      canvas.addGLEventListener(listener);
   
      frame.addWindowListener(new WindowAdapter() {
      
         public void windowClosing(WindowEvent e)
         {
            System.exit(0);
         }
      });
   }
}