The radius (in points) of the touch.
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@property(nonatomic, readonly) CGFloat majorRadius;
Use the value in this property to determine the size of the touch that was reported by the hardware. This value is an approximation of the size and can vary by the amount specified in the majorRadiusTolerance property.
Returns the current location of the receiver in the coordinate system of the given view.
Returns the previous 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.
The tolerance (in points) of the touch’s radius.
Returns a precise location for the touch, when available.
Returns a precise previous location for the touch, when available.