Touch.Angle

Hi

I used the Touch.AngleForID() expression and it doesn't generated useful values all the time, as described in the manual: <font color=blue>"A touch must be moving across the device screen for this expression to contain a useful value."</font>

So I decided to build my own Touch.Angle expression and was amazed (thanks to the math.angle() expression) how easy it was.

You just have to get the starting & ending Touchs X and Y and put it in math.angle() like this:

angle(TouchStartX, TouchStartY, TouchEndX, TouchEndY) and you'll always get a correct and useful angle for your touch.

And finally here's a little example (you can even use mouse to test):

dl.dropboxusercontent.com/u/61284640/TouchAngle.capx

Hope this helps somebody.

Just a heads up that what you've made is functionally different from the Touch angle expression. The touch angle updates in real-time based on the current direction of the touch - so if you swipe in an L shape, you'll get the correct touch angle towards the end of the swipe, whereas this method just tell you the angle from the start to the end.

Oh ok, I didn't know that but I thought that there's something more behind your Touch.Angle... <img src="smileys/smiley1.gif" border="0" align="middle" />

But it might be useful to sometimes just have the whole touch angle as one "correct" value and so this will probably help some people.