1.实现选择45度

func viewTransform() {
       var transform = CATransform3DIdentity
       let angle = CGFloat(45)
       transform.m34 = -1 / 500
       blueView.layer.transform = CATransform3DRotate(transform, angle, 0, 1, 0)
}

2.实现手势旋转

class ViewController: UIViewController {
    @IBOutlet weak var blueView: UIView!
    var angle = CGPoint.init(x: 0, y: 0)
    override func viewDidLoad() {
        super.viewDidLoad()
        let subView = UIView.init(frame: blueView.bounds)
        subView.backgroundColor = UIColor.blue
        blueView.addSubview(subView)
        blueView.backgroundColor = UIColor.clear
        
        let panGesture = UIPanGestureRecognizer(target: self, action: #selector(viewTransform))
        blueView.addGestureRecognizer(panGesture)
    }
    
    func viewTransform(sender: UIPanGestureRecognizer) {
        let point = sender.translation(in: blueView)
        let angleX = angle.x + (point.x / 30)
        let angleY = angle.y + (point.y / 30)
        
        var transform = CATransform3DIdentity
        transform.m34 = -1 / 500
        transform = CATransform3DRotate(transform, angleX, 0, 1, 0)
        transform = CATransform3DRotate(transform, angleY, 1, 0, 0)
        blueView.layer.sublayerTransform = transform
        
        if sender.state == .ended {
            angle.x = angleX
            angle.y = angleY
        }
    }
}

3.只做会滑动的骰子

骰子资源

import UIKit

class ViewController: UIViewController {
    let diceView = UIView()
    var angle = CGPoint.init(x: 0, y: 0)
    override func viewDidLoad() {
        super.viewDidLoad()
        addDice()
        let panGesture = UIPanGestureRecognizer(target: self, action: #selector(viewTransform))
        diceView.addGestureRecognizer(panGesture)
    }
    
    func addDice() {
        let viewFrame = UIScreen.main.bounds
        var diceTransform = CATransform3DIdentity
        
        diceView.frame = CGRect(x: 0, y: viewFrame .maxY / 2 - 50, width: viewFrame.width, height: 100)
        
        // 1
        let dice1 = UIImageView.init(image: UIImage(named: "dice1.jpg"))
        dice1.frame = CGRect(x: viewFrame.maxX / 2 - 50, y: 0, width: 100, height: 100)
        diceTransform = CATransform3DTranslate(diceTransform, 0, 0, 50)
        dice1.layer.transform = diceTransform
        
        // 6
        let dice6 = UIImageView.init(image: UIImage(named: "dice6.jpg"))
        dice6.frame = CGRect(x: viewFrame.maxX / 2 - 50, y: 0, width: 100, height: 100)
        diceTransform = CATransform3DTranslate(CATransform3DIdentity, 0, 0, -50)
        dice6.layer.transform = diceTransform
        
        // 2
        let dice2 = UIImageView.init(image: UIImage(named: "dice2.jpg"))
        dice2.frame = CGRect(x: viewFrame.maxX / 2 - 50,y: 0, width: 100,height: 100)
        diceTransform = CATransform3DRotate(CATransform3DIdentity, (CGFloat.pi / 2), 0, 1, 0)
        diceTransform = CATransform3DTranslate(diceTransform, 0, 0, 50)
        dice2.layer.transform = diceTransform
        
        // 5
        let dice5 = UIImageView.init(image: UIImage(named: "dice5.jpg"))
        dice5.frame = CGRect(x: viewFrame.maxX / 2 - 50,y: 0, width: 100,height: 100)
        diceTransform = CATransform3DRotate(CATransform3DIdentity, (-CGFloat.pi / 2), 0, 1, 0)
        diceTransform = CATransform3DTranslate(diceTransform, 0, 0, 50)
        dice5.layer.transform = diceTransform
        
        // 3
        let dice3 = UIImageView.init(image: UIImage(named: "dice3.jpg"))
        dice3.frame = CGRect(x: viewFrame.maxX / 2 - 50,y:0,width: 100, height:100)
        diceTransform = CATransform3DRotate(CATransform3DIdentity, (-CGFloat.pi / 2), 1, 0, 0)
        diceTransform = CATransform3DTranslate(diceTransform, 0, 0, 50)
        dice3.layer.transform = diceTransform
        
        // 4
        let dice4 = UIImageView.init(image: UIImage(named: "dice4.jpg"))
        dice4.frame = CGRect(x: viewFrame.maxX / 2 - 50,y:0,width: 100, height:100)
        diceTransform = CATransform3DRotate(CATransform3DIdentity, (CGFloat.pi / 2), 1, 0, 0)
        diceTransform = CATransform3DTranslate(diceTransform, 0, 0, 50)
        dice4.layer.transform = diceTransform
        
        diceView.addSubview(dice1)
        diceView.addSubview(dice2)
        diceView.addSubview(dice3)
        diceView.addSubview(dice4)
        diceView.addSubview(dice5)
        diceView.addSubview(dice6)
        
        view.addSubview(diceView)
    }
    
    func viewTransform(sender: UIPanGestureRecognizer) {
        let point = sender.translation(in: diceView)
        let angleX = angle.x + (point.x / 30)
        let angleY = angle.y + (point.y / 30)
        
        var transform = CATransform3DIdentity
        transform.m34 = -1 / 500
        transform = CATransform3DRotate(transform, angleX, 0, 1, 0)
        transform = CATransform3DRotate(transform, angleY, 1, 0, 0)
        diceView.layer.sublayerTransform = transform
        
        if sender.state == .ended {
            angle.x = angleX
            angle.y = angleY
        }
    }

}