Method Detail

• createSceneGraphObjectReferences

  void createSceneGraphObjectReferences(SceneGraphObjectReferenceControl ref)

  The method is called before writeSGObject and gives the user the chance to create references to other Nodes and NodeComponents. References take the form of a nodeID, of type integer. Every SceneGraphObject is assigned a unique ID. The user must save the reference information in writeSGObject

  Parameters:

  ref - provides methods to create references to a SceneGraphObject

• restoreSceneGraphObjectReferences

  void restoreSceneGraphObjectReferences(SceneGraphObjectReferenceControl ref)

  Within this method the user should restore references to the SceneGraphObjects whose nodeID's were created with createSceneGraphObjectReferences This method is called once the all objects in the scenegraph have been loaded.

  Parameters:

  ref - provides methods to resolve references to a SceneGraphObject

• writeSceneGraphObject

  void writeSceneGraphObject(DataOutput out)
                      throws IOException

  This method should store all the local state of the object and any references to other SceneGraphObjects into out. This is called after data for the parent SceneGraphObject has been written to the out.

  Parameters:

  out - the output stream

  Throws:

  IOException

• readSceneGraphObject

  void readSceneGraphObject(DataInput in)
                     throws IOException

  This is called after the object has been constructed and the superclass SceneGraphObject data has been read from in. The user should restore all state infomation written in writeSGObject

  Parameters:

  in - the input stream

  Throws:

  IOException

• saveChildren

  boolean saveChildren()

  Flag indicating for children of this object should be saved This method only has an effect if this is a subclass of Group. If this returns true then all children of this Group will be saved. If it returns false then the children are not saved.