allanGold

流星雨粒子动画

// 利用关键帧实现一种类似（渐入）渐出的效果 CAKeyframeAnimation *kfa = [CAKeyframeAnimation animation]; kfa.keyPath = @"transform.translation.x"; CGFloat s = 16;// kfa.values = @[@(-s),@(0),@(s),@(0),@(-s),@(0),@(s),@(0)]; kfa.values = @[@(-16),@(0),@(12).

上代码@interface ViewController ()@property (nonatomic, strong) UIImageView *iv1st;@property (nonatomic, strong) UIImageView *iv2nd;@end@implementation ViewController-(void)startMove{ UIImageView *iv1st = [[UIImageView alloc] init];

@implementation ViewController- (void)viewDidLoad {    [superviewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        self.contentView    

@interface CAKeyframeAnimation :CAPropertyAnimation@property(nullable,copy) NSArray *values;@property(nullable)CGPathRef path;@property(nullable,copy) NSArrayNSNumber *> *keyTimes;

http://www.cnblogs.com/superYou/p/4602057.html

实现起来也很简单,主要分3个步骤:1.创建一个镂空的路径:　　UIBezierPath 有个原生的方法- (void)appendPath:(UIBezierPath *)bezierPath, 这个方法作用是俩个路径有叠加的部分则会镂空.　　这个方法实现原理应该是path的FillRule 默认是FillRuleEvenOdd(CALayer 有一个fillRule属性的

参考：https://blog.youkuaiyun.com/yongyinmg/article/details/37927833https://www.jianshu.com/p/a5cd9ba42bad从某个定点开始放大某个视图- (void)animateApplyToView:(UIView *)view { NSString *keyPath = @"transf...