Please, show code how you create all the views branchgroups and canvases
again. Better send all code.
Vladimir A. Vernikovski
Programmer
-------------------------------------------
JPROOF Technologies Ltd.
----- Original Message -----
From: "Ben Moxon" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, July 11, 2003 7:30 PM
Subject: [JAVA3D] Picking error - dead BranchGroup?
> In my application I have a panel in which a user can pick a shape in a 3D
environment. Because of the problems I have mentioned before, I have to
maintain a single Canvas3D across the application, which seems to be fine,
but now I find when I leave the 3D panel and then go back to it and try to
do the same picking things I get an illegal state exception:
>
> java.lang.IllegalStateException: Picking can only work if BranchGroup is
alive
> at javax.media.j3d.BranchGroup.pickAll(BranchGroup.java:123)
> at
com.sun.j3d.utils.picking.PickTool.pickGeomAllSorted(PickTool.java:698)
> at
com.sun.j3d.utils.picking.PickTool.pickAllSorted(PickTool.java:522)
>
> When I finish with the 3D view I clear it thus:
>
> public void roomClear()
> {
> Viewer[] ox = ourView.getViewers();
> for( int p=0;p<ox.length;p++)
> ox[p].getView().removeAllCanvas3Ds();
> ourView.detach();
> ourBG.detach();
> }
>
> When I go back to it I create all the views branchgroups and canvases
again.
>
> Can anyone tell me what I am doing wrong?
>
> cheers,
>
> -ben
>
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