简单的鼠标手势识别算法

Demo:
http://iamtangyao.sinaapp.com/mouse

原理: http://iamtangyao.sinaapp.com/post/2013-06-03/%E7%AE%80%E5%8D%95%E7%9A%84%E9%BC%A0%E6%A0%87%E6%89%8B%E5%8A%BF%E8%AF%86%E5%88%AB%E7%AE%97%E6%B3%95