1. EnterpriseGlobe's Avatar
    newbie here on IPhone SDK development issue.

    I created a circle with CGContextAddEllipseInRect() and It is working fine.
    I have some other view (ball) which I want to move inside the circle randomly (Random moving I did already).
    What I want is , If Ball view touches the circle line it has to move back.

    How can I know the whether the ball touches the circle line or not ?

    Looking forward for your response guys.
    03-25-2009 06:30 AM
  2. Vita Alex's Avatar
    Check how close the ball's center is to the circle's center.

    If it's less then their diameters combined - then yes, it touches

    Edit: You meant inside. In this case the solution is different, but same approach. You should be able to figure it out
    04-13-2009 03:01 AM