高德地图的一下方法

//计算点在某个圆形范围内  

MACircleContainsCoordinate(self.LocationPt, self.QianDaoPt, [self.signInScope doubleValue])

//计算连个点之间的距离

    MAMapPoint point1 = MAMapPointForCoordinate(CLLocationCoordinate2DMake(self.LocationPt.latitude,self.LocationPt.longitude));

    MAMapPoint point2 = MAMapPointForCoordinate(CLLocationCoordinate2DMake(self.QianDaoPt.latitude,self.QianDaoPt.longitude));

    CLLocationDistance distance = MAMetersBetweenMapPoints(point1,point2);

    NSLog(@"%f",distance);