//加入所有圆的点

//设置位置的点

                CLLocationCoordinate2D destinationCoordinated =CLLocationCoordinate2DMake(latitude,longitude);

                MAPointAnnotation * a1= [[MAPointAnnotation alloc] init];

                a1.coordinate =destinationCoordinated;

                // 111000 这个是米转换经纬度的最大尺度，所以算出来的点只会在圆之外

                double jingwei = (double) areaRadius/;

              //计入一个中心点

                [arraySpace addObject:a1];

               //由原点计算上下左右的四个点

                for (int i=; i<; i++) {

                    MAPointAnnotation * a1= [[MAPointAnnotation alloc] init];

                    switch (i) {

                        case :

                            NSLog(@"%lf----%lf",latitude+jingwei,longitude+jingwei);

                            a1.coordinate = CLLocationCoordinate2DMake(latitude+jingwei,longitude);

                            break;

                        case :

                            a1.coordinate = CLLocationCoordinate2DMake(latitude-jingwei,longitude);

                            break;

                        case :

                            a1.coordinate = CLLocationCoordinate2DMake(latitude,longitude+jingwei);

                            break;

                        case :

                            a1.coordinate = CLLocationCoordinate2DMake(latitude,longitude-jingwei);

                            break;

                        default:

                            break;

                    }

                    //加入数组

                    [arraySpace addObject:a1];

                }