U3D, Ids and other metadata in the sceneobject

Question

From the JS3D reference, and the "supported elements" in U3D, it seems that there could exist some overlap between what is accessible on a sceneobject through js and what is in the U3D, but that mapping is not explained anywhere. In particular I would like to know if these properties map to anything in the U3D file and what that mapping is:
SceneObject.name The SceneObject objectâs name.
Type: string
SceneObject.objectGUID
A value that uniquely identifies the SceneObject in custom data.
Type: string
SceneObject.objectID
An unsigned 32-bit value that uniquely identifies the SceneObject.
Type: integer
Thanks!
Johan

Answer 1

For the last two items, the scene does not automatically assign any U3D metadata to these properties. The latest reference for them can be found here:
http://livedocs.adobe.com/acrobat_sdk/9/Acrobat9_HTMLHelp/wwhelp/wwhimpl/common/html/wwhel p.htm?context=Acrobat9_HTMLHelp&file=JS_3D_Intro.90.1.html
However, the "metadataString" property might give you something you could use. Here's a hunk of JS code to show the values of all node properties in the Acrobat JS console. Attach this script to the model and compare the output to what you see from your original U3D creation program. There indeed could be some overlap you would find useful, and this is the easiest way to determine that, I'll bet (and the most dependable way).
First, here's how to use the script, just in case:
1) Attach the script to the 3D object, not as page script. To do this, use the "Select Object Tool" and double-click the 3D annot, click the 3D tab, script field is at bottom.
2) Activate the 3D annot, and open the Javascript console (ctrl+j) to see the results of the property search.
Here's the script:
console.println ("Number of nodes in scene = " + scene.nodes.count + "\n");
console.println ("Looping through nodes...\n");
for (i = 0; i < scene.nodes.count; i++)
objNode = scene.nodes.getByIndex(i);
console.println ("------------------------------------------------------");
console.println ("NODE INDEX " + i);
console.println ("-------------");
if (objNode == undefined)
{ console.println (" *** node = undefined ***\n\n"); }
else
console.println (" PROPERTIES:");
console.println (" objNode.firstChild = " + objNode.firstChild );
console.println (" objNode.hitEnabled = " + objNode.hitEnabled );
console.println (" objNode.info = " + objNode.info );
console.println (" objNode.metadataString = " + objNode.metadataString );
console.println (" objNode.name = " + objNode.name );
console.println (" objNode.nextSibling = " + objNode.nextSibling );
console.println (" objNode.objectGUID = " + objNode.objectGUID );
console.println (" objNode.objectID = " + objNode.objectID );
console.println (" objNode.parent = " + objNode.parent );
console.println (" objNode.type = " + objNode.type );
console.println (" objNode.transform = " + objNode.transform );
console.println (" objNode.wireframeColor = " + objNode.wireframeColor );
console.println (" objNode.visible = " + objNode.visible );
console.println ("");
console.println (" METHODS:");
console.println (" objNode.detachFromCurrentAnimation(). = " + objNode.detachFromCurrentAnimation() );
console.println ("\n");