Java 3D bug in the implementation used to implement the scene

hi paco!
i have a java 3d ejs file that loads in EJS_4.3.6_120219 only if the implementation field is set to JAVA3D as oppose to a selectable variable called"mode" which allows toggling from SIMPLE3D and JAVA3D.


my Java version is C:\Program Files\Java\jre7
my Ejs version is  C:\LooKang\EJS_4.3.6_120219\EJS_4.3.6
my workspace is C:/LooKang/workspace/

when i change the implementation field to JAVA3D, the console has some error as below.

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at org.opensourcephysics.drawing3d.java3d.Java3dStyle.setTexture(Unknown Source)
at org.opensourcephysics.drawing3d.java3d.Java3dStyle.applyStyleChange(Unknown Source)
at org.opensourcephysics.drawing3d.java3d.Java3dElement.styleChanged(Unknown Source)
at org.opensourcephysics.drawing3d.java3d.Java3dElementImage.styleChanged(Unknown Source)
at org.opensourcephysics.drawing3d.Element.styleChanged(Unknown Source)
at org.opensourcephysics.drawing3d.utils.Style.notifyChange(Unknown Source)
at org.opensourcephysics.drawing3d.utils.Style.setTexture(Unknown Source)
at org.opensourcephysics.drawing3d.java3d.Java3dElementImage.processChanges(Unknown Source)
at org.opensourcephysics.drawing3d.Element.processChanges(Unknown Source)
at org.opensourcephysics.drawing3d.java3d.Java3dDrawingPanel3D.update(Unknown Source)
at org.opensourcephysics.drawing3d.java3d.Java3dDrawingPanel3D.forceRefresh(Unknown Source)
at org.opensourcephysics.drawing3d.DrawingPanel3D.cameraChanged(Unknown Source)
at org.opensourcephysics.drawing3d.DrawingPanel3D.setImplementation(Unknown Source)
at org.colos.ejs.library.control.drawing3d.ControlDrawingPanel3D.setImplementation(Unknown Source)
at org.colos.ejs.library.control.drawing3d.ControlDrawingPanel3D.setValue(Unknown Source)
at org.colos.ejs.library.control.ControlElement.setProperty(Unknown Source)
at org.colos.ejs.library.control.ControlElement.setProperty(Unknown Source)
at org.colos.ejs.library.control.drawing3d.ControlDrawingPanel3D.setProperty(Unknown Source)
at org.colos.ejs.osejs.view.ViewElement.setTheProperty(Unknown Source)
at org.colos.ejs.osejs.view.ViewElement.doTheChange(Unknown Source)
at org.colos.ejs.osejs.view.ViewElement.access$7(Unknown Source)
at org.colos.ejs.osejs.view.ViewElement$MyMouseListener.mouseClicked(Unknown Source)
at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)


but it runs well :)

and if the implementation field is "mode", the error is the same but the applet hangs .


hope this info is useful in your enhancement of EJS

Post edited March 8, 2012 at 9:12 PM EST.

Attached File: ejs_EarthAndSatelite05.zip

OSP@SG blog
OSP@SG Digital Library