How do I measure the velocity of a swipe?

Question

I\'m developing a game that will use the force of the swipe as a variable user input.

I read from the documentation that on the touchesEnded event, I can get the allTouc

Answer 1

I've accomplished something along these lines rather simply by just comparing [touch locationInView:self] to [touch previousLocationInView:self] in touchesEnded of the Class (subclass of UIView) of the object that will be moved. This will give you a vector with location, direction & rough sense of velocity at the moment user released finger from the iPhone.