每次与另一个图像碰撞时缩放图像

发布于 2024-11-17 14:57:06 字数 486 浏览 1 评论 0原文

这是我的代码：

-(void)collision{
    if(CGRectIntersectsRect(imageView.frame,centre.frame)){
        imageView.alpha=0;
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:1.0f];
        centre.transform=CGAffineTransformMakeScale(1.3, 1.3);
        [UIView commitAnimations];
    }
}

当 imageView 与中心中心碰撞时变得更大。我的问题是，当“imageView”第二次与“center”碰撞时，动画不起作用。我想让中心每次 imageView 与中心碰撞时变得越来越大，但它只变大一次。抱歉我的英语我是法国人：/请问我该如何解决这个问题？

原文

here is my code :

-(void)collision{
    if(CGRectIntersectsRect(imageView.frame,centre.frame)){
        imageView.alpha=0;
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:1.0f];
        centre.transform=CGAffineTransformMakeScale(1.3, 1.3);
        [UIView commitAnimations];
    }
}

When imageView collide with centre centre become bigger.
my problem is that when "imageView" collide with "centre" a second time the animation doesn't work. I want to make centre bigger and bigger and bigger every time imageView collide with center, but it become bigger just one time . Sorry for my english I'm french :/ How can I solve this please ?

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终陌 2024-11-24 14:57:06

您的视图没有第二次缩放的原因是您每次都对其应用相同的变换 - 您每次都需要更改应用的变换：

...
centre.transform = CGAffineTransformScale(centre.transform, 1.3, 1.3);
...

The reason your view is not scaled second time is that you apply the same transform to it every time - you need to change applied transformation every time:

...
centre.transform = CGAffineTransformScale(centre.transform, 1.3, 1.3);
...

回复收藏 0 原文

玩世 2024-11-24 14:57:06

可能是之后没有应用秤。尝试每次增加比例值。声明一个float来跟踪对象的比例。然后，在每次碰撞期间，在执行 CGAffineTransformMakeScale(scale,scale) 之前执行以下

scale = scale + 0.3;

操作：

-(void)collision{
    if(CGRectIntersectsRect(imageView.frame,centre.frame)){
        scale = scale + 0.3;
        imageView.alpha=0;
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:1.0f];
        centre.transform=CGAffineTransformMakeScale(scale, scale);
        [UIView commitAnimations];
    }
...

It may be that the scale is not applied after. Try incrementing the scale value each time. Declare a float to keep track of the object's scale. Then, during each collision, before you execute the CGAffineTransformMakeScale(scale, scale) do this:

scale = scale + 0.3;

Example

-(void)collision{
    if(CGRectIntersectsRect(imageView.frame,centre.frame)){
        scale = scale + 0.3;
        imageView.alpha=0;
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:1.0f];
        centre.transform=CGAffineTransformMakeScale(scale, scale);
        [UIView commitAnimations];
    }
...

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~没有更多了~