UIView旋转和移动

发布于 2024-11-06 01:54:55 字数 654 浏览 0 评论 0原文

我尝试旋转和移动 UIImage。这是我的代码：

im = [[UIImageView alloc ] initWithFrame:CGRectMake(160, 240, 100, 100)];
im.image = [UIImage imageNamed:@"image.png"];
[view addSubview:im];
NSTimer * timer = [NSTimer scheduledTimerWithTimeInterval:1.0/30.0 target:self selector:@selector(actionIm) userInfo:nil repeats:YES];

-(void) actionIm
{
  [im setFrame:CGRectMake(im.frame.origin.x+1 , im.frame.origin.y+1 ,100, 100)];
  im.transform=CGAffineTransformMakeRotation (mRotation);
  mRotation+=0.1;
}

结果是一个非常奇怪的行为：如果我只使用旋转，它就可以工作。如果我只使用移动，它就会起作用。但这两种用法都会产生奇怪的结果（IUImage“跳跃”奇怪）。

我红色了很多关于旋转、框架、边界、中心的东西......但没有什么可以解决我的问题。谢谢。

原文

I try to rotate and move a UIImage.
Here is my code :

im = [[UIImageView alloc ] initWithFrame:CGRectMake(160, 240, 100, 100)];
im.image = [UIImage imageNamed:@"image.png"];
[view addSubview:im];
NSTimer * timer = [NSTimer scheduledTimerWithTimeInterval:1.0/30.0 target:self selector:@selector(actionIm) userInfo:nil repeats:YES];

-(void) actionIm
{
  [im setFrame:CGRectMake(im.frame.origin.x+1 , im.frame.origin.y+1 ,100, 100)];
  im.transform=CGAffineTransformMakeRotation (mRotation);
  mRotation+=0.1;
}

The result is a very strange behaviour : If I use only the rotation, it works. If I use only the move, it works. But both uses give a strange result (the IUImage "jump" bizzarly).

I red a lot of things about rotation, frame, bounds, center... but nothing that can solve my problem.
Thank you.

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