coreAnimation核心动画(二)CAKeyframeAnimation

 1 //
 2 //  ViewController.m
 3 //  coreAnimation
 4 //
 5 //  Created by ys on 15/11/21.
 6 //  Copyright (c) 2015年 ys. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 
11 @interface ViewController ()
12 @property (weak, nonatomic) IBOutlet UIView *blackView;
13 @end
14 
15 @implementation ViewController
16 
17 - (void)viewDidLoad
18 {
19     [super viewDidLoad];
20     
21 }
22 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
23 {
24     CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
25     
26     anim.keyPath = @"position";
27     anim.removedOnCompletion = NO;
28     anim.fillMode = kCAFillModeForwards;
29     anim.duration = 2.0;
30     
31     CGMutablePathRef path = CGPathCreateMutable();
32     CGPathAddEllipseInRect(path, NULL, CGRectMake(100, 100, 200, 200));
33     anim.path = path;
34     CGPathRelease(path);
35     
36     // 设置动画的执行节奏
37     // kCAMediaTimingFunctionEaseInEaseOut : 一开始比较慢, 中间会加速,  临近结束的时候, 会变慢
38     anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
39     anim.delegate = self;
40     
41     [self.blackView.layer addAnimation:anim forKey:nil];
42 }
43 
44 #pragma mark - 动画的代理方法
45 #pragma mark 动画开始的时候调用
46 - (void)animationDidStart:(CAAnimation *)anim
47 {
48     NSLog(@"animationDidStart");
49 }
50 #pragma mark 动画结束的时候调用
51 - (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
52 {
53     NSLog(@"animationDidStop");
54 }
55 
56 - (void)testMove
57 {
58     //    CABasicAnimation  fromValue --> toValue
59     
60     CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
61     
62     anim.keyPath = @"position";
63     
64     NSValue *v1 = [NSValue valueWithCGPoint:CGPointZero];
65     NSValue *v2 = [NSValue valueWithCGPoint:CGPointMake(100, 0)];
66     NSValue *v3 = [NSValue valueWithCGPoint:CGPointMake(100, 200)];
67     NSValue *v4 = [NSValue valueWithCGPoint:CGPointMake(0, 200)];
68     anim.values = @[v1, v2, v3, v4];
69     
70     //    anim.keyTimes = @[@(0.5), @(0.25), @(0.25)];
71     
72     anim.duration = 2.0;
73     
74     
75     anim.removedOnCompletion = NO;
76     anim.fillMode = kCAFillModeForwards;
77     
78     [self.blackView.layer addAnimation:anim forKey:nil];
79 }
80 
81 
82 @end