同時縮放和移動圖層

Question

我正在使用CABasicAnimation來更改邊界屬性，然後使用它來更改圖層的位置屬性。是否可能同時做到這兩點？有點像改變UIView的框架？

CGRect oldBounds = mask.bounds; 
CGRect newBounds = CGRectMake(0,0, rect.size.width * scale, rect.size.height * scale); 
NSLog(@"%@", NSStringFromCGRect(newBounds)); 
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"bounds"]; 

animation.fromValue = [NSValue valueWithCGRect:oldBounds]; 
animation.toValue = [NSValue valueWithCGRect:newBounds]; 

mask.bounds = newBounds; 
[mask addAnimation:animation forKey:@"bounds"]; 



CGPoint oldPos = mask.position; 
CGPoint newPos = CGPointMake(rect.origin.x * scale, rect.origin.y * scale); 

CABasicAnimation *animation2 = [CABasicAnimation animationWithKeyPath:@"position"]; 

animation2.fromValue = [NSValue valueWithCGPoint:oldPos]; 
animation2.toValue = [NSValue valueWithCGPoint:newPos]; 

mask.position = newPos; 
[mask addAnimation:animation2 forKey:@"position"]; 

Answer 1

編輯：改到給出更爲精確的動畫...

您可以一次添加2個動畫...

像這樣：

CALayer * myLayer ; 

{ 
    CABasicAnimation * anim = [ CABasicAnimation animationWithKeyPath:@"position" ] ; 
    anim.fromValue = [ NSValue valueWithCGPoint:layer.position ] ; 
    [ layer addAnimation:anim forKey:nil ] ; 
} 

layer.position = <#newPosition#> ; 

{ 
    CABasicAnimation * anim = [ CABasicAnimation animationWithKeyPath:@"bounds" ] ; 
    anim.fromValue = [ NSValue valueWithCGRect:layer.bounds ] ; 
    [ layer addAnimation:anim forKey:nil ] ; 
} 

layer.bounds = <#newBounds#> ;