PickTool.pickAllSorted() returns null when enabling on-screen rendering

Hi there,

I use a SimpleUniverse with the PickTool from the package com.sun.j3d.utils.picking (and not from pickfast).

If I create the universe with an off-screen Canvas3D, then PickTool.pickAllSorted() returns a proper list of PickResult. However, if I create the universe with an on-screen Canvas3D, then PickTool.pickAllSorted() returns just null.

Can anybody tell me what the problem is here? See the two relevant source files attached.
VirtualMeasurementUniverse.java
Measurement3D.java

Note, that the pickable objects are added to the scene by means of the method Measurement3D.addMeasurementObject(BranchGroup p_oMeasurementObject) where p_oMeasurementObject has the following flags:
        a_oMeasurementObject.setCapability(BranchGroup.ALLOW_CHILDREN_READ);
        a_oMeasurementObject.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
        a_oMeasurementObject.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
        a_oMeasurementObject.setCapability(BranchGroup.ALLOW_DETACH);

Thanks a lot in advance,
Schorsch

Hi

Please provide a rudimentary test case instead of a few "relevant" classes or reproduce your bug on an existing example. It would help to determine whether it comes from your code.

Okay, thanks. I will do that. I just thought it might be a stupid little thing that one can see straight a way in my provided short configuration files.
I will write and upload a quick test.

Here we go:
PickToolTest.java

This should be simple enough. Just run it and change the flag IS_OFFSCREEN from true to false and voilà.

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edit: Removed wrong dependencies in the sample file. Accidental typo. The sample file should execute now.

Thanks.

@Harvey We need your help, we need to invoke the Java3D God :D

What happens when you use an onscreen canvas without adding it into the content pane?

gouessej wrote

What happens when you use an onscreen canvas without adding it into the content pane?

Adding it to the AWT Frame / Swing content pane or not, doesn't make a difference. As soon as the offscreen-parameter in the constructor of the Canvas3D class is set to false, the PickTool returns null.