private void OnUndoRedo()
{
// Ensure selection doesn't create error
ClearContourSelection();
ClearPointSelection();
// Update target
SetTarget();
SetTargetDirty();
// Update ContourBuilder
ContourBlocBuilder targetBuilder = targetBloc.GetComponent <ContourBlocBuilder>();
if (targetBuilder != null)
{
targetBuilder.RebuildAll();
}
}