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[Patheros]

Code:

/**
 * BranchGroup is root of a branch graph of a scene.
 * It can be attached to a Locale or as a child of
 * another subgraph.
 *
 * @author David Yazel
 * @author Marvin Froehlich (aka Qudus)
 * @author Amos Wenger (aka BlueSky)
 */
public class BranchGroup extends Group

Unless I'm mistaken a BranchGroup is not intended to be added to another BranchGroup but the BranchGroup javadoc seems to indicate that a BranchGroup can/should be a child of another subgraph, ie a child of another group.

[Patheros]

PS. I'm currently using BranchGroups as the group of a LayeredNode, is this the correct way class to use or should I be using a Group instead?

[Marvin Fröhlich]

BranchGroup should never be used as something else than the root of your branch graph. This means, it is the branch group of a RenderPass.

For backwards compatiblity it is not forbidden to use a BranchGroup as a child of another Group. But you should avoid this.

Group is the intended Node type to be used as the LayeredNode's Group.

I've updated the BranchGroup's JavaDoc.

Marvin