我需要使用UIPinchGestureRecognizer而不使用CGAffineTransform, 來縮放視圖,因此如何更改此代碼以在沒有CGAffineTransform的情況下執行此操作?如何在不使用CGAffineTransform的情況下縮放視圖
- (IBAction)zoomma:(UIGestureRecognizer *)sender {
CGFloat factor = [(UIPinchGestureRecognizer *)sender scale];
if (factor > 1) {
self.sgungaView.transform = CGAffineTransformMakeScale(lastScaleFactor + (factor-1), lastScaleFactor + (factor-1));
} else {
self.sgungaView.transform = CGAffineTransformMakeScale(lastScaleFactor * factor, lastScaleFactor * factor);
}
if (sender.state == UIGestureRecognizerStateEnded) {
if (factor > 1) {
lastScaleFactor += (factor-1);
} else {
lastScaleFactor *= factor;
}
}
}
編輯:
不是一個傑作,但這個工程
- (void)zoomma:(UIGestureRecognizer *)sender {
CGFloat factor = [(UIPinchGestureRecognizer *)sender scale];
if (factor > 1) {
float enlarge = lastScaleFactor + (factor-1);
[self.sgungaView setBounds:CGRectMake(0, 0, self.sgungaView.bounds.size.height + enlarge, self.sgungaView.bounds.size.height + enlarge)];
} else {
float stringi = lastScaleFactor * factor;
[self.sgungaView setBounds:CGRectMake(0, 0, self.sgungaView.bounds.size.height - stringi, self.sgungaView.bounds.size.height - stringi)];
}
if (sender.state == UIGestureRecognizerStateEnded) {
if (factor > 1) {
lastScaleFactor += (factor-1);
} else {
lastScaleFactor *= factor;
}
}
}
有一個更好的辦法?
爲什麼你不想使用CGAffineTransform? –
我有一個方法,在該視圖上應用旋轉,我無法對變換進行連接 – Enlil
爲什麼不能連接2個變換? – msgambel