IPhone two fingers twist gesture

Question

I need to rotate an image when the user do a two finger twist on it. do you have an idea on how i can code this or if you've done this before.

I think it would be a good idea to write a class that detect all the main gesture and provide iif.

Answer 1

I found this example on the internet. It's very nicely written...

http://www.skylarcantu.com/blog/2009/08/08/multitouchsingletouchtap-handling/

Answer 2

When you rotate your thumb and index clockwise what really happens is that:

• the thumb starts on the right
• descrives a u shape underneath the index
• finishes on the left

If you look at the full gesture it is .) rotated clockwise. In some cases, the index will move slightly south-east so you get /).

Answer 3

I suggest looking into SDK 3.2 - it has extended support for gesture detection.