iOS UIButton 90도 회전시키기 CGAffineTransform 사용. private let menuButton = UIButton().then { // 3점 모양(햄버그 버튼) $0.setImage(UIImage(systemName: "ellipsis"), for: .normal) $0.contentMode = .scaleAspectFit $0.tintColor = .black $0.transform = CGAffineTransform(rotationAngle: .pi * 0.5) }