HI Boris,
I've just created a simple test case
public BranchGroup[] iotest13() {
Appearance app1 = new Appearance();
PolygonAttributes poly = new PolygonAttributes();
app1.setPolygonAttributes( poly );
TriangleArray geom1 = new TriangleArray( 3, GeometryArray.COORDINATES);
geom1.setCoordinates( 0, new double[] { 0, 0, 0,
1,0,0,
1,1,0
});
Shape3D s3d1 = new Shape3D( geom1, app1 );
BranchGroup bg1 = new BranchGroup();
BranchGroup root1 = new BranchGroup();
root1.addChild( bg1 );
bg1.addChild( s3d1 );
CrossReferenceBG crossRef = new CrossReferenceBG( geom1 );
BranchGroup bg2 = new BranchGroup();
BranchGroup root2 = new BranchGroup();
root2.addChild( bg2 );
bg2.addChild( crossRef );
root1.setCapability( BranchGroup.ALLOW_DETACH );
root2.setCapability( BranchGroup.ALLOW_DETACH );
return new BranchGroup[] { root1, root2 };
}
Where CrossReferenceBG is a BranchGroup that maintains an internal reference
to the object passed to it a construction (see attachment).
This test works, from your description I think it's similar to your scene. Can
you spot any major differences from your scene graph ?
Rgds
Paul
----------------------------------------------------------
Paul Byrne Email : [EMAIL PROTECTED]
Sun Microsystems Phone : (650) 786 9926
Visualization Software Group Fax : (650) 786 5852
----------------------------------------------------------
>MIME-Version: 1.0
>Date: Mon, 14 May 2001 13:30:04 -0700
>From: Boris Zeldin <[EMAIL PROTECTED]>
>Subject: Re: [JAVA3D] Crash in j3dfly serialization
>Comments: To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>
>Paul,
>
>It is not that easy to isolate the code exhibiting the
>problem. I will try to prepare a workable example in
>the next couple days. The problem in my opinion comes
>from the fact that I reference a NodeComponent that is
>"NOT SHARED" by BranchGroups.
>Let me explain a little.
>
>I have a nested hierarchy of BranchGroup Objects (As
>it is shown in the diagram in my previous post to
>Java3D group).
>That is I have something like that
>
>BranchGroup1
>|
>|
>----BranchGroup2
> |
> |
> ---- BranchBroup3
>
>( and so on)
>
>Now I have a texture(Texture3) which is a part of say
>BranchGroup3. This texture is not "shared" with
>BranchGroup1. Nevertheless I customized BranchGroup1
>in such a way so that it
>helds a reference to all available textures
>including Texture3 (to save time/memory).
>I assume (though I am not certain from following
>j3dfly serialization code) that
>you make tables of only those NodeComponents that are
>available in BranchGroupRetained. In my situation,
>BranchGroup1 does not have any geometry. It is just an
>
>assembler of a bunch of models( which might be also
>nested). So when I am at
>createSceneGraphObjectReferences()
>for BranchGroup1 none of the tables related to
>NodeComponents is even initialized.
>As a result I am getting a crash.
>
>Thank you
>
>Boris
>
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CrossReferenceBG.java
