演示如何編寫自己的動畫引擎：CHAnimation

jopen 10年前發布 | 15K 次閱讀 Objective-C開發 CHAnimation

CHAnimation 用來演示如何編寫自己的動畫引擎，靈感來自于非死book Pop，只需 600 行的 Objective-C 代碼。

#import "CHAnimation.h"

CHAnimation *animation = [CHAnimation new];
animation.duration = 0.4;

animation.writeBlock = ^(id obj, id value) {
    button.center = [value CGPointValue];
};

animation.fromValue = [NSValue valueWithCGPoint:CGPointMake(70, 70)];
animation.toValue = [NSValue valueWithCGPoint:CGPointMake(170, 170)];

[button ch_addAnimation:animation forKey:@"animation"];