// ViewController.h
#import <UIKit/UIKit.h>

@interface ViewController : UIViewController


@end

// ViewController.m


#import "ViewController.h"

// 角度轉弧度
#define angle2Radio(angle) ((angle) * M_PI / 180.0)

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIView *redView;

@end

@implementation ViewController

/***
 UIView與核心動畫區別?
 1.核心動畫只作用在layer.
 2.核心動畫看到的一切都是假像.真實值并沒有被修改.

 什么時候使用UIVeiw,什么時候使用核心動畫
 1. 什么時候使用UIVeiw:當與用戶進行交互時,使用UIView.不須要與用戶進行交互時, 使用兩個都可以.
 2.什么時候使用核心動畫:當做幀動畫時,轉場動畫.
 */

- (void)viewDidLoad {
    [super viewDidLoad];
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
//    [self startTransformAnimation:self.redView];
//    [self startScaleAnimation:self.redView];
//    [self startHeartBeatAnimation:self.redView];
//    [self startShakeAnimation:self.redView];
//    [self startDrawedRouteAnimation:self.redView];
//    [self startTransitionAnimation:self.redView];
    [self startGroupAnimation:self.redView];
}

// 動畫組
- (void)startGroupAnimation:(UIView*)view {
    CAAnimationGroup *groupA = [CAAnimationGroup animation];
    // 移動
    CABasicAnimation *anim = [CABasicAnimation animation];
    anim.keyPath = @"position.y";
    anim.toValue = @300;
    anim.removedOnCompletion = NO;
    anim.fillMode = kCAFillModeForwards;
    [view.layer addAnimation:anim forKey:nil];
    // 縮放
    CABasicAnimation *anim2 = [CABasicAnimation animation];
    anim2.keyPath = @"transform.scale";
    anim2.toValue = @0.5;
    anim2.removedOnCompletion = NO;
    anim2.fillMode = kCAFillModeForwards;
    [view.layer addAnimation:anim2 forKey:nil];
    // 自動執行數組當中的每一個動畫對象
    groupA.animations = @[anim, anim2];
    groupA.removedOnCompletion = NO;
    groupA.fillMode = kCAFillModeForwards;
    [view.layer addAnimation:groupA forKey:nil];
}


// 轉場動畫
- (void)startTransitionAnimation:(UIView*)view {
    // 添加轉場動畫
    CATransition *anim = [CATransition animation];
    // 設置動畫持續時間
    anim.duration = 1;
    //設置轉場類型
    anim.type = @"suckEffect";
    [view.layer addAnimation:anim forKey:nil];
}

// 按繪制路線移動
- (void)startDrawedRouteAnimation:(UIView*)view {
    //幀動畫
    CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
    anim.keyPath = @"position";
    anim.duration = 3;
    UIBezierPath *path = [UIBezierPath bezierPath];
    [path moveToPoint:CGPointMake(50, 50)];
    [path addLineToPoint:CGPointMake(200, 50)];
    [path addLineToPoint:CGPointMake(200, 300)];
    anim.path = path.CGPath;

    [view.layer addAnimation:anim forKey:nil];
}

// 圖片抖動
- (void)startShakeAnimation:(UIView*)view {
    //幀動畫
    CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
    anim.keyPath = @"transform.rotation";
    anim.values = @[@(angle2Radio(-5)),@(angle2Radio(5)),@(angle2Radio(-5))];

    //設置執行次數
    anim.repeatCount = MAXFLOAT;
    anim.autoreverses = YES;

    [view.layer addAnimation:anim forKey:nil];
}

// 心跳效果
- (void)startHeartBeatAnimation:(UIView*)view {
    // 創建動畫對象
    CABasicAnimation *anim = [CABasicAnimation animation];
    anim.keyPath = @"transform.scale";
    // 復位
    anim.toValue = @0;
    // 設置動畫的執行次數
    anim.repeatCount = MAXFLOAT;
    // 設置動畫的執行時長
    anim.duration = 0.2;
    // 設置自動反轉
    anim.autoreverses = YES;
    // 添加動畫
    [view.layer addAnimation:anim forKey:nil];
}

// 縮放
- (void)startScaleAnimation:(UIView*)view {
    //初始化動畫對象
    CABasicAnimation *anim = [CABasicAnimation animation];
    //設置屬性值
    anim.keyPath = @"transform.scale.x";
    anim.toValue = @0.5;
    // 動畫完成時會自動刪除動畫,下面兩段代碼一起使用，效果才會出現
    anim.removedOnCompletion = NO;
    anim.fillMode = @"forwards";
    //添加核心動畫
    [self.redView.layer addAnimation:anim forKey:nil];
}

// 開始旋轉
- (void)startTransformAnimation:(UIView*)view {
    CABasicAnimation* rotationAnimation;
    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI * 2.0 ];
    rotationAnimation.duration = 0.5;
    rotationAnimation.cumulative = YES;
    rotationAnimation.repeatCount = MAXFLOAT;

    [view.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];
}

@end

• 動畫效果: