/// <summary>
/// This method is called to respond to a gizmo transform operation undone message.
/// </summary>
private void RespondToMessage(GizmoTransformOperationWasUndoneMessage message)
{
// When the transform operation is undone, it means the objects position/rotation/scale
// has changed, so we have to recalculate the position and orientation of the active gizmo.
EstablishActiveGizmoPosition();
UpdateActiveGizmoRotation();
}
/// <summary>
/// This method can be called to undo the action.
/// </summary>
public void Undo()
{
// In order to undo this kind of action, we will loop through all pre transform object snapshots
// and apply them to the corresponding objects.
foreach (ObjectTransformSnapshot snapshot in _preTransformObjectSnapshots)
{
snapshot.ApplySnapshot();
}
// Send a gizmo transform operation undone message
GizmoTransformOperationWasUndoneMessage.SendToInterestedListeners(_gizmoWhichTransformedObjects);
}
/// <summary>
/// Convenience function for sending a gizmo transform operation undone message to
/// all interested listeners.
/// </summary>
/// <param name="gizmoInvolvedInTransformOperation">
/// This is the gizmo which is involved in the transform operation which was undone.
/// </param>
public static void SendToInterestedListeners(Gizmo gizmoInvolvedInTransformOperation)
{
var message = new GizmoTransformOperationWasUndoneMessage(gizmoInvolvedInTransformOperation);
MessageListenerDatabase.Instance.SendMessageToInterestedListeners(message);
}
