private boolean noObjectWasClickedOn(){
  boolean pickedNodeNull=(pickedNode == null);
  boolean cameraPicked=(pickedNode instanceof PCamera);
  return (pickedNodeNull || cameraPicked);
}

private boolean noObjectWasClickedOn ( ) { boolean pickedNodeNull = ( pickedNode == null ) ; boolean cameraPicked = ( pickedNode instanceof PCamera ) ; return ( pickedNodeNull || cameraPicked ) ; }
encapsulate logic for determining the case where no object ( neuron node , synpase node , etc ) was clicked on at the beginning of this drag sequence .
