The tolerance (in points) of the touch’s radius.
- iOS 8.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
This value determines the accuracy of the value in the
majorRadius property. Add this value to the radius to get the maximum touch radius. Subtract the value to get the minimum touch radius.
Getting the Location of a Touch
Returns the current location of the receiver in the coordinate system of the given view.
The view to which touches are being delivered, if any.
The window in which the touch initially occurred.