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如何使用UIPinchGestureRecognizer通过变换(基于现有变换,图层的当前状态)来缩放CALayer?使用UIPinchGestureRecognizer来缩放图层
- (IBAction)gesturePinch:(UIPinchGestureRecognizer *)sender
{
float scale = sender.scale;
scale = scale - previousScale;
previousScale = scale;
layer.transform = CATransform3DScale(square.transform, scale, scale, scale);
}
因为规模在增加,所以规模很大或很小。有什么建议么?