如何在触摸地点打碎石?
如果用户触及某一个观点领域,则如何利用这些地点来以黑色标示地点?
有何看法,或如何这样做?
一般来说,如果你重新使用Quartz的话:
您的演讲
储存一些数据结构中流出的点
您的意见无效
选择并提取你储存的2个点。
UIBezierPath is a class that can help with this. You can essentially "draw into" an instance of UIBezierPath when you receive the touch events, then render the object in drawRect.
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