Re: [x3d-public] Creating proto instances

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

Paulo Estrela wrote:

> Hi,
>
> Anyone knows how can I create proto instances based on a extern proto? How can I get a proto declaration from a file and then add a instance in another world?
>
> Thanks
>
> Paulo Estrela
>  
You create proto instances based on extern proto instances in the same 
manner as regular instances since ExternProtoDeclaration extends 
ProtoDeclaration, except that the declaration manipulation methods are 
named xExternProtoDeclaration instead of xProtoDeclaration.

To get a proto declaration from a file and add an instance in another 
world, something like
 X3DScene sceneContainingDecl;
 X3DScene mainScene;
 X3DProtoDeclaration theProto;
 theProto=sceneContainingDecl.getProtoDeclaration(...);
 sceneContainingDecl.removeProtoDeclaration(theProto);
 mainScene.updateProtoDeclaration(theProto,newProtoName);
 X3DNode yourInstance=theProto.createInstance();
should work.

--Brad Vender

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