Zoom in/out gesture UIView
Hi, i've been trying to capture gesture zoom in/out in a UIView.
Code:
UITouch *first = twoTouches objectAtIndex:0;
UITouch *second = twoTouches objectAtIndex:1;
CGPoint firstPoint = first locationInView:self;
CGPoint secondPoint = second locationInView:self;
CGFloat initialDistance = distanceBetweenPoints(firstPoint, secondPoint);
I'm using the function distanceBetweenPoints, the problem is that firstPoint or secondPoint always is 0.00, 0.00 and for that reason the result is the value of one of them.
I need that the booth values should be distint to zero for obtain the real distance.
The frame of the view is: (0, 0, 320, 417).
The functionality that i'm developing is something like zoom in/out of google maps.
Thanks,
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