/*
 * Author: Wojtek
 * */

package com.company;

import java.util.Scanner;

public class JapaneseFlag {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        System.out.println("Enter the size of the Polish flag imitation that the program will draw for You");
        System.out.println("[10] - SMALL\n[20] - MEDIUM\n[30] - LARGE");

        int size = scan.nextInt();

        //driver menu, necessity to choose one of three sizes of flag
        switch(size) {
            case 10:
                japaneseFlag(size);
                //circle(size);
                break;
            case 20:
                japaneseFlag(size);
                break;
            case 30:
                //japaneseFlag(size);
                break;
            default:
                System.out.println("Invalid value specified");
                break;
        }

    }

//    public static void circle(int size) {
//
//        int radius = size/4;
//        double distance;
//
//        for(int i=0; i<=2*radius; i++) {
//            for(int j=0; j<=2*radius; j++) {
//                distance = Math.sqrt((i - radius) * (i - radius) + (j - radius) * (j - radius));
//
//                if (distance>radius-0.5 && distance<radius+0.5)
//                    System.out.print("*");
//                else
//                    System.out.print(" ");
//            }
//            System.out.println();
//        }
//
//    }

    public static void japaneseFlag(int size) {

        //*****************************TOP BORDER*************************************/
        for (int i=0; i<size*3; i++) {
            System.out.print("═");
        }
        System.out.print("\n");


        //left border
        for (int i=0; i<size/2-2; i++) {
            System.out.print("║");
            for (int j=0; j<size*3-2; j++) {
                System.out.print(" ");
            }
            System.out.println("║");
        }

        /****************************CIRCLE*************************************/
        int radius = size/4;
        double distance;


            for(int i=0; i<=2*radius; i++) {
                for(int j=0; j<=2*radius; j++) {
                    distance = Math.sqrt((i - radius) * (i - radius) + (j - radius) * (j - radius));

                    if (distance>radius-0.5 && distance<radius+0.5)
                        System.out.print("*");
                    else
                        System.out.print(" ");
                }
                System.out.println();
            }
        /*****************************CIRCLE*************************************/

    }


}