自己做的一个围绕中心旋转的动画效果

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?????? 最近iphone需求要做到一些动画，想让一个图片围绕frame外的一个中心点进行旋转，但无论用center还是用anchorPoint，都要不到我想要的效果，只能采用此“小手段”来实现。如果有人有更好的实现方式，欢迎留言、评论、拍砖！

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@begin

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    UIView *bgVw = [[UIView alloc] initWithFrame:CGRectMake(0, 30, 300, 300)];    bgVw.backgroundColor = [UIColor clearColor];        UIView *centerVw = [[UIView alloc] initWithFrame:CGRectMake(100, 130, 100, 100)];    centerVw.backgroundColor = [UIColor blueColor];    [self.view addSubview:centerVw];        UIView *vw = [[UIView alloc] initWithFrame:CGRectMake(0, 125, 50, 50)];    vw.backgroundColor = [UIColor brownColor];        UIView *vw2 = [[UIView alloc] initWithFrame:CGRectMake(250, 125, 50, 50)];    vw2.backgroundColor = [UIColor redColor];        UIView *vw3 = [[UIView alloc] initWithFrame:CGRectMake(125, 0, 50, 50)];    vw3.backgroundColor = [UIColor orangeColor];        UIView *vw4 = [[UIView alloc] initWithFrame:CGRectMake(125, 250, 50, 50)];    vw4.backgroundColor = [UIColor greenColor];        [bgVw addSubview:vw];    [bgVw addSubview:vw2];    [bgVw addSubview:vw3];    [bgVw addSubview:vw4];    [self.view addSubview:bgVw];            [UIView beginAnimations:nil context:nil];    [UIView setAnimationDuration:1.0f];    [UIView setAnimationRepeatAutoreverses:YES];    [UIView setAnimationRepeatCount:10];    bgVw.layer.anchorPoint = CGPointMake(0.5, 0.5);    bgVw.transform = CGAffineTransformMakeRotation([self radians:-180]);        [UIView commitAnimations];

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@end

1 楼 maxliz 2011-10-11 用ps能做 2 楼 wsqwsq000 2011-10-17 这里用的是比较基础、原始的做法，最近学cocos2d，发现用cocos2d也可以很简单的做到