     case Idle
     case Saving
     case Saved
-    case CreditsShown
 }
 
 enum Corner {

    private var colourWheel : ColourWheel?
    private var instructions : UILabel?
    private var credits : UITextView?
    private var infoButton : UIButton?
    private var saveIndicator : UIButton?
    

        case .Idle:
            self.saveGradient()
        case .Saved:
            if creditsShown {
                self.hideCredits()
            } else {
                self.reset()
            }
        case .Saving:
            return // save in progress... do nothing
        }
    }

