On Dec 2, 2010, at 9:37 AM, Gustavo Adolfo Pizano wrote:
> now in my touches moved I do the following, the first part applies a
> rotation, which is working properly, except that after the first move
> the angle is 180 from what the view has, so you see that the view
> turns 180 degrees!!,

>               CGFloat a = atan2(-dx,dy);



atan2's parameters are declared as:

     double  atan2(double y, double x);




Glenn Andreas                      gandr...@gandreas.com 
The most merciful thing in the world ... is the inability of the human mind to 
correlate all its contents - HPL

_______________________________________________

Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com

This email sent to arch...@mail-archive.com

Reply via email to