how to do circular motion?

how to do a function that catch circular motions from touch? [import]uid: 23063 topic_id: 11580 reply_id: 311580[/import]

I highly suggest you use the gesture recognition code that was donated here:

http://developer.anscamobile.com/code/gesture-recognition-library-corona-sdk

It works not just in capturing circular motions, but complex gestures similar to when Palm and Windows Mobile had their handwriting recognition for letters and numbers.
[import]uid: 6084 topic_id: 11580 reply_id: 42071[/import]

i realy dont know how can this help me for the example that come with the library :S

i want do to something like that:
http://cepa.if.usp.br/e-fisica/imagens/mecanica/basico/cap11/sentido_horario.jpg

the player need to follow the arrow with circular moviment [import]uid: 23063 topic_id: 11580 reply_id: 43038[/import]