Hi Rahul,
Which version of Java3D are you using ? What wakeup
criteria are use in the custom behavior ? Can you check
to see if the custom behavior public void initialize()
method is being invoked every time the behavior branch
is detach and attach again ?
When window minmize and maximize again, there is
some wakeup conditions flag in behavior being reset.
You can achieve the same effect by using start/stop
View.
If possible, please extract a simple test case and
send it to us for investigation.
Thanks.
- Kelvin
-------------
Java 3D Team
Sun Microsystems Inc.
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FILETIME=[55106910:01C13A2E]
>Date: Mon, 10 Sep 2001 19:25:21 +0000
>From: Rahul Choudhury <[EMAIL PROTECTED]>
>Subject: [JAVA3D] processStimulus is not getting called..
>To: [EMAIL PROTECTED]
>
>Hi all:
>
>I am using Java3D in an application used for 3D training. The application
>uses VRML worlds for its 3D data. We have a VRML loader/browser which loads
>and manipulates the world. The application has 3 modes. In each mode a
>separate VRML world is loaded (after unloading the old VRML world). So at a
>time there is only one VRML world loaded.
>
>Every time a vrml world is loaded, we attach a customized Behavior node
>(CustomBehavior) to the world, which helps users to navigate around. Other
>than navigation, it also assists in notifying when user touches a
>TouchSensor or performs other activities.
>
>The problem that I have happens only when an old VRML world is unloaded and
>the new one is loaded
>
>Lets say the User changed mode from Mode A to Mode B
>
>1. The application unloads the VRML World 1 related to Mode A. We make sure
>that the world is properly unloaded. We called
>VirtualUniverse.removeAllLocales and made sure all other references related
>to the World 1 are gone. I run the application using OptimizeIt and found
>that in deed all necessary memory was freed up and unloading was happening
>properly. So no problem so far.
>
>2. The world then loads up VRML World 2 related to mode B. I can see the
>world. However I can not move around or click on any TouchSensor.
>
>After further investigation, I found out the reason. I saw that the class
>CustomBehvaior which is responsible for navigation etc, is not receiving and
>processStimulus method from Java3D scheduler. As a result, nothing was
>happening.
>
>I also noticed that when I manually minimize (iconify) the application's
>JFrame (by clicking on Frame's minimize icon) and maximize it again,
>everything becomes OK. In other words, the processStimulus method of the
>CustomBehavior class starts getting call from Java 3D scheduler as and when
>user presses / drags mouse on the Canvas3D.
>
>I would like to know if there is any solution to this problem. I tried
>stopping and starting the renderer after the second world is loaded. That
>didn�t work. I invalidated and validated the parent Frame (as well as
>Canvas3D) after the second world is loaded. That didnt work too. I tried
>repainting everything, that didn't work as well.
>
>I am wondering what happens in the Java3D renderer when I manually minimize
>and maximize the parent Frame. Because whatever it is, that apparently fixes
>my problem.
>
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