Why are nulls needed for transformations?

To build my 3D environment with all of its animations I
needed to add a number of nulls that I did not otherwise need in my
3D application (Lightwave.) This seems to be because Director needs
to base transformations (rotation, scale, translation) off a
parented null’s location. Does Director not use an
object’s origin for these operations?
I don’t mean to pick on Director only. I know that
other environments like OGRE have similar requirements. It just
seems to be an inefficiency to need to create a new null for any of
these operations when working off of the object’s
origin/center of gravity would suffice. Is this how all real-time
3D environments work?

Because the info in the master is needed to make the adjustment. That info doesn't exist in the preview, so it would be applied differently to the master later. It would be cool to be able to do that though. If it were possible, Aperture would run much much faster because it wouldn't have to access the masters except upon export.\
It would be very cool! I guess I don't understand how adjustments to a Jpg Preview could not be expanded to the master. I suppose the mask in aperture would not be that acurrate when enlarged but I do not make precise masks in AP3 I still use ps for tight precision and that would be on a hi rez original and then brought back to AP3.
Thanks for replying with your thoughts I apprecieate your time. And cheers to the future for catching up to our dreams.

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Or search:
http://www.oracle.com/pls/db112/search?word=sid+serial%23&partno=
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Enter password:
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SQL> conn other_user
Enter password:
Connected.
SQL> select sid,serial# from v$session where sid=(select sid from v$mystat where rownum=1);
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Regards
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import java.awt.Canvas;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
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import java.net.URL;
import java.util.HashMap;
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import javax.swing.JPanel;
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ventana.setIgnoreRepaint(true); //why ignore repaint?
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Edited by: ajushi on Dec 16, 2007 2:38 PM
Edited by: ajushi on Dec 16, 2007 2:43 PM
Edited by: ajushi on Dec 16, 2007 2:52 PM

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package forums;
import java.util.Map;
import java.util.HashMap;
import java.awt.Canvas;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.Dimension;
import java.awt.Graphics;
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import javax.swing.JPanel;
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private static final int HEIGHT = 600;
private static final int SPEED = 100;
private int posX = WIDTH/2;
private int posY = HEIGHT/2;
private int vX = 5;
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private Container pane = null;
private BufferedImage image = null;
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public void paint(Graphics g){}
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Why are nulls needed for transformations?

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