Re: [x3d-public] Xj3D: Help with default values on createNode

[Bradley Vender <bradley.vender@ndsu.nodak.edu>]

Bradley Vender wrote:

> Alan Hudson wrote:
>
> > dani rodriguez wrote:
> >
> > > Im trying this piece of code:
> > >
> > > SAINode shape=(SAINode)x3dScene.createNode("Shape");
> > > SFNode nodeGeometry=(SFNode)shape.getField("geometry");
> > > SAINode node=(SAINode)x3dScene.createNode("Box");
> > > SFVec3f size=(SFVec3f)node.getField("size");
> > > size.setValue(new float[]{3,3,3});
> > >
> > >
> > > but Box size remains 2,2,2 (default value), i noticed that:
> > > size.isWritable() returns false, so i should be able to set that 
> > > size on Box creation, the question is How?
> > >
> > > and ... Can i create a node from a String containing a piece of x3d 
> > > code, and then add that to my current loaded scene?
> > this is fixed in CVS.  It was an issue with when a node is realized.  
> > I'll have a better idea when next release of Xj3D will be next week. 
>
>
> Actually, if you are using the external SAI, the bug is that 
> isReadable() and isWritable() are only checking the field type and not 
> the node realization state.  Entered as bug #41 because I want to read 
> over the specification again to see if there's anything else I'm 
> overlooking.
>
> --Brad

After posting, it occurs to me that slightly more might need to be 
changed than I originally thought.  At the moment, the code for handling 
setValue call in the external SAI code doesn't do any checking of 
writability on its own, presuming that the receiving node will enforce 
the field changes correctly.  Mostly this is because the code was 
converted over from EAI field handling code.  I want to add sensible 
access checking but I also want to make sure that I get the boundary 
conditions correctly handled.

--Brad

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