Zoom To Pinch In UIView

i added zoom to pinch on the UIView in my iPhone app. but i can't limit how much it zooms in and out. i want the limit of zooming out to the size of the original view. and i want the zooming to be reasonable. can some one help me?

i added these two codes:


- (void)viewDidLoad
{
UIPinchGestureRecognizer *twoFingerPinch = [[[UIPinchGestureRecognizer alloc]
initWithTarget:self
actionselector(twoFingerPinch]
autorelease];

[[self view] addGestureRecognizer:twoFingerPinch];
}




&



- (void)twoFingerPinchUIPinchGestureRecognizer *)recognizer
{
NSLog(@"Pinch scale: %f", recognizer.scale);
CGAffineTransform transform = CGAffineTransformMakeScale(recognizer.scale, recognizer.scale);
// you can implement any int/float value in context of what scale you want to zoom in or out
self.view.transform = transform;
}

I'd try just testing the value of the scale, if it's <1.0, then make the scale 1.0. If it's > some max value (you already printing out the scale values, find one that you like for a max), then set it to the max value.