Returns the dragger used by this manipulator.
instance of a node class derived from SoTransform.
make it initially affect the state in the same way as the node.
the node with this manipulator.
NULL, an SoTransform will be created for you.
Returns the children of this node. This node only has the dragger as a child.
Sets up the dragger instance to be controlled by this manipulator.
interest to the application programmer. Copies field values from one node to the other.
Can be used by subclasses to attach/detach field sensors.