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1  Java Game APIs & Engines / JOGL Development / Loading Normals from obj file on: 2011-11-18 13:04:08
Hi,
  I'm having a few issues loading th normals into jogl okay I' ve wrote my model loader and have iterated over the vertices which are loading in just fine and resembling a Cube, now I'm trying to load the normals Ive iterating over the information and have tried to load them  I do get some visual faces but in a bit of a mess rather than the shape of a cube any help would be most appreciated.

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                gl.glVertexPointer( 3, GL2.GL_FLOAT, 0,  fBuffer );
     
      gl.glNormalPointer( GL2.GL_FLOAT, 0, nBuffer );
     
      gl.glEnableClientState( GL2.GL_VERTEX_ARRAY );  
      gl.glEnableClientState( GL2.GL_NORMAL_ARRAY );  
     
      gl.glDrawArrays( GL2.GL_POINTS, 0, fVertex.length / 3 );
           
      gl.glDrawArrays( GL2.GL_POLYGON, 0, nNormals.length / 3 );
     
      gl.glDisableClientState( GL2.GL_VERTEX_ARRAY );
      gl.glDisableClientState( GL2.GL_NORMAL_ARRAY );

These are the the normal which I think are vn in the obj file ?
Normal Iterate Array: 0.000000
Normal Iterate Array: -1.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: 1.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: 1.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: -0.000000
Normal Iterate Array: -0.000000
Normal Iterate Array: 1.000000
Normal Iterate Array: -1.000000
Normal Iterate Array: -0.000000
Normal Iterate Array: -0.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: 0.000000
Normal Iterate Array: -1.000000

and these are the vertices which I think are v in the obj file?
Iterate Array: 1.000000
Iterate Array: -1.000000
Iterate Array: -1.000000
Iterate Array: 1.000000
Iterate Array: -1.000000
Iterate Array: 1.000000
Iterate Array: -1.000000
Iterate Array: -1.000000
Iterate Array: 1.000000
Iterate Array: -1.000000
Iterate Array: -1.000000
Iterate Array: -1.000000
Iterate Array: 1.000000
Iterate Array: 1.000000
Iterate Array: -0.999999
Iterate Array: 0.999999
Iterate Array: 1.000000
Iterate Array: 1.000001
Iterate Array: -1.000000
Iterate Array: 1.000000
Iterate Array: 1.000000
Iterate Array: -1.000000
Iterate Array: 1.000000
Iterate Array: -1.000000
2  Java Game APIs & Engines / JOGL Development / Re: problem loading Float Buffer correctly on: 2011-11-17 21:16:42
Hi,
  I figured out the problem the cube requires 8 vertice where I was putting in the length of the array this does work but interestingly puts a vertice in the middle of the cube, and also interestingly if you don't create any  x, y or z coordinates it will create a vertice in the middle without any coordinates as long as you have a number in the vertice in the glDrawArrays.

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gl.glDrawArrays( GL2.GL_POINTS, 0, 1 );


Wrong
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 gl.glDrawArrays( GL2.GL_POINTS, 0, pointsf.length );


Right
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gl.glDrawArrays( GL2.GL_POINTS, 0, 8 ); 
3  Java Game APIs & Engines / JOGL Development / problem loading Float Buffer correctly on: 2011-11-17 20:13:10
Hi,
  I'm having a problem with loading the x,y,z vertices the problem is, is that I get the vertices loaded which resemble a Cube but I keep getting a vertice in the middle of the cube that shouldnt be their ?

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private float[]pointsf = {  1.000000f, -1.000000f, -1.000000f,
                    1.000000f, -1.000000f, 1.000000f,
                  -1.000000f, -1.000000f, 1.000000f,
                                 -1.000000f, -1.000000f, -1.000000f,
                                   1.000000f, 1.000000f,  -0.999999f,
                                   0.999999f, 1.000000f,  1.000001f,
                                 -1.000000f, 1.000000f,  1.000000f,
                                 -1.000000f, 1.000000f, -1.000000f };

private FloatBuffer rectVertices;

@Override
   public void display(GLAutoDrawable gld )
   {
      // TODO Auto-generated method stub
     GL2 gl = gld.getGL().getGL2();
     
      gl.glClear( GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT );
     
      gl.glMatrixMode( GL2.GL_MODELVIEW );
     
      gl.glLoadIdentity();
     
      gl.glTranslatef( 0.0f, 0.0f, -5.0f );
     
      gl.glRotatef( 0, 1.0f, 0.0f, 0.0f );
      gl.glRotatef( 0, 0.0f, 1.0f, 0.0f );
     
      rectVertices = GLBuffers.newDirectFloatBuffer( pointsf.length );      
      rectVertices.put( pointsf );
      rectVertices.rewind();        
     
      gl.glVertexPointer( 3, GL2.GL_FLOAT, 0, rectVertices );
      gl.glEnableClientState( GL2.GL_VERTEX_ARRAY );
      gl.glNormal3f( 0,0,1 );
      gl.glDrawArrays( GL2.GL_POINTS, 0, pointsf.length );  // Generate the polygon using 4 vertices.
     gl.glDisableClientState( GL2.GL_VERTEX_ARRAY );
     
   }

public void init(GLAutoDrawable gld )
   {
      // TODO Auto-generated method stub
     GL2 gl = gld.getGL().getGL2();
      glu = new GLU();
      gl.glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
     
      gl.glEnable( GL2.GL_DEPTH_TEST );
     
      gl.glMatrixMode( GL2.GL_PROJECTION );
     
      gl.glLoadIdentity();
     
      glu.gluPerspective( 45.0, 500.0 / 500.0, 1.0, 500.0 );
     
      gl.glPointSize( 5.0f );  
     
   }


I would of tried to show this in a image but cant figure out how to load the image?

[ img ]
src = "C:\\Documents and Settings\Administrator\My Documents\My Pictures\pointArray.bmp"/>
[/img]
4  Java Game APIs & Engines / OpenGL Development / Problem with FloatBuffer Array on: 2011-11-17 20:07:00
Hi,
  I'm having a problem with loading the x,y,z vertices the problem is, is that I get the vertices loaded which resemble a Cube but I keep getting a vertice in the middle of the cube that shouldnt be their ?

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private float[]pointsf = {  1.000000f, -1.000000f, -1.000000f,
                    1.000000f, -1.000000f, 1.000000f,
                  -1.000000f, -1.000000f, 1.000000f,
                                 -1.000000f, -1.000000f, -1.000000f,
                                   1.000000f, 1.000000f,  -0.999999f,
                                   0.999999f, 1.000000f,  1.000001f,
                                 -1.000000f, 1.000000f,  1.000000f,
                                 -1.000000f, 1.000000f, -1.000000f };

private FloatBuffer rectVertices;

@Override
   public void display(GLAutoDrawable gld )
   {
      // TODO Auto-generated method stub
     GL2 gl = gld.getGL().getGL2();
     
      gl.glClear( GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT );
     
      gl.glMatrixMode( GL2.GL_MODELVIEW );
     
      gl.glLoadIdentity();
     
      gl.glTranslatef( 0.0f, 0.0f, -5.0f );
     
      gl.glRotatef( 0, 1.0f, 0.0f, 0.0f );
      gl.glRotatef( 0, 0.0f, 1.0f, 0.0f );
     
      rectVertices = GLBuffers.newDirectFloatBuffer( pointsf.length );      
      rectVertices.put( pointsf );
      rectVertices.rewind();        
     
      gl.glVertexPointer( 3, GL2.GL_FLOAT, 0, rectVertices );
      gl.glEnableClientState( GL2.GL_VERTEX_ARRAY );
      gl.glNormal3f( 0,0,1 );
      gl.glDrawArrays( GL2.GL_POINTS, 0, pointsf.length );  // Generate the polygon using 4 vertices.
     gl.glDisableClientState( GL2.GL_VERTEX_ARRAY );
     
   }

public void init(GLAutoDrawable gld )
   {
      // TODO Auto-generated method stub
     GL2 gl = gld.getGL().getGL2();
      glu = new GLU();
      gl.glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
     
      gl.glEnable( GL2.GL_DEPTH_TEST );
     
      gl.glMatrixMode( GL2.GL_PROJECTION );
     
      gl.glLoadIdentity();
     
      glu.gluPerspective( 45.0, 500.0 / 500.0, 1.0, 500.0 );
     
      gl.glPointSize( 5.0f );  
     
   }

I would of tried to show this in a image but cant figure out how to load the image?

[ img ]
src = "C:\\Documents and Settings\Administrator\My Documents\My Pictures\pointArray.bmp"/>
[/img]
5  Game Development / Newbie & Debugging Questions / Re: Rotating a shape on: 2011-07-17 08:13:07
Hi,
   Yes the x , y are 250 I was just kinda using stuff I found on the internet I don't think translate should even be used?
6  Game Development / Newbie & Debugging Questions / Rotating a shape on: 2011-07-17 07:32:49
Hi,
  I have a problem what I'm trying to do is make my fillRect() Rotate constantly as it moves around a point
What i mean by this is, I have wrote the trigonometry so the fillRect() moves around a point constantly and then what I am trying to do is make the shape rotate as it goes around the point any help would be apprecited 


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import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
/**
 *
 * @author Administrator
 */

public class PhysicGUI extends JFrame
{
   
    private Trigonometry trig;
    private MoveAnim move;
    private Timer timer;

    private int x;
    private int y;    
   
    private double hypotenese;
    private double cosine;
    private double sine;
    private double counter;
    private int radianCounter;

    public PhysicGUI()
    {
        super();
        setSize( 500, 500 );
        setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        trig = new Trigonometry();
        move = new MoveAnim();
        timer = new Timer( 500, move );

        x = 250;
        y = 250;

        hypotenese = 60;
        sine = 0;
        cosine = 0;
        counter = 0;
        radianCounter = 0;
        timer.start();
    }

    public void paint( Graphics g )
    {
        super.paint( g );    
        Graphics2D g2d = ( Graphics2D )g;
        g2d.translate( 15, 15 );
        g2d.rotate( radianCounter++, x , y  );
        g2d.fillRect( x + ( int )trig.getCosine() ,
                    y + ( int )trig.getSine(), 30, 30 );
    }

    public void move()
    {
        double radian =  Math.toRadians( counter );
        cosine = Math.cos( radian ) * hypotenese;
        sine = Math.sin( radian ) * hypotenese;
        counter = counter + 30;

        if( counter > 360 )
        {
            counter = 0;
        }

    }    

    public class MoveAnim implements ActionListener
    {
        public void actionPerformed(ActionEvent e)
        {
            repaint();
            move();
        }
    }

    public static void main( String[]args )
    {
        PhysicGUI gui = new PhysicGUI();
        gui.setVisible( true );        
    }



}
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