Multitouch problem

jbernabeu

Hi,

I would like to be able to differentiate the finger that fired the SPTouch (not the one in the hand, but be able to know if it is a id to be able to group the touches from different fingers)

I am not sure if I am explain what I would like to be able to do.

Example:

I get two touches from two different fingers, I would like to be able to calculate the distance from each touch to the previous touch of each finger that I recorded ... (previousGlobalX and previousGlobalY are not useful because the distance it is too low).

Thanks in advance

jbernabeu

Daniel,

Could you add a field like initialTimestamp to the SPTouch so that field it will never change ???

I think this it would be useful to solve my problem.

Daniel

Actually, in each "SPTouchEvent", you get always the same "SPTouch" instance for a certain finger.

E.g. when the finger touches the screen and moves around on the screen, you'll get multiple "SPTouchEvents", but they will always contain the same "SPTouch".

So there already is a unique identifier for each finger: the SPTouch instance itself! You can store that directly and compare it with newer touches.

Does that work for you?

jbernabeu

Great !!!!

It is useful to calculate the distance to the last point from the SPTouch ... well, I have been able to do all that I want.

Thanks a lot Daniel !!!!!