//计算两点距离 -(float)distanceBetweenTwoPoint:(CGPoint)point1 point2:(CGPoint)point2 { return sqrtf(powf(point1.x - point2.x, 2) + powf(point1.y - point2.y, 2)); }
posted on 2013-11-26 10:12 jack_yan 阅读(635) 评论(0) 编辑 收藏 举报