// Helene Martin, CSE 142
// Prints a scalable diamond shape made of characters.

// NOTE: pseudocode and loop tables should NOT appear in your final program's
// comments.  They appear here so you can recall what we did in lecture.

/*
#================#
drawLine: #, 16 =, #

|      <><>      |	1
|    <>....<>    |	2
|  <>........<>  |	3
|<>............<>|	4
drawTop: repeat 4 (|, some spaces (decreasing), <>, some (increasing) dots, <>, some spaces (decreasing), |)

|<>............<>|	4
|  <>........<>  |	3
|    <>....<>    |	2
|      <><>      |   1
drawBottom: repeat 4 (|, some spaces (increasing), <>, some (decreasing) dots, <>, some spaces (increasing), |)

#================#

Scaling:
Note that only the spaces are different.  The number of dots is the SAME for size 3 or 4.
#============#
|    <><>    |
|  <>....<>  |
|<>........<>|
|<>........<>|
|  <>....<>  |
|    <><>    |
#============#
SIZE
4			line * -2 + 8
3			line * -2 + 6
SIZE		line * -2 + SIZE * 2
*/

public class Mirror {
   public static final int SIZE = 4;
   
   public static void main(String[] args) {
      drawLine();
      drawTop();
      drawBottom();
      drawLine();
   }
   
   // draws a line of =
   public static void drawLine() {
      System.out.print("#");
      for (int i = 1; i <= SIZE * 4; i++) {
         System.out.print("=");
      }
      System.out.println("#");
   }
   
   /*
   |      <><>      |
   |    <>....<>    |
   |  <>........<>  |
   |<>............<>|
   drawTop: repeat 4 (|, -2 * line + 8 spaces, <>, some (increasing) dots, <>, some spaces (decreasing), |)
   
   line  spaces   -2 * line   -2 * line + 8
   1     6        -2          6
   2     4        -4          4
   3     2        -6          2
   4     0        -8
   
   line  dots     4 * line    4 * line - 4
   1     0        4           0
   2     4        8           4
   3     8        12
   4     12
   
   */
   // draws a triangle opening towards the bottom
   public static void drawTop() {
      for (int line = 1; line <= SIZE; line++) {
         System.out.print("|");
         
         for (int spaces = 1; spaces <= -2 * line + SIZE * 2; spaces++) {
            System.out.print(" ");
         }
         System.out.print("<>");
         
         for (int dots = 1; dots <= 4 * line - 4; dots++) {
            System.out.print(".");
         }
         System.out.print("<>");
         
         // NOTE: this is the same as the spacing above but we can't
         // yet reduce this redundancy with what we know.
         for (int spaces = 1; spaces <= -2 * line + SIZE * 2; spaces++) {
            System.out.print(" ");
         }
         
         System.out.println("|");
      }
   }
   
   // draws a triangle opening toward the top
   public static void drawBottom() {
      // we noticed that the top and bottom were related
      // and just ran the loop backwards
      for (int line = SIZE; line >= 1; line--) {
         System.out.print("|");
         
         for (int spaces = 1; spaces <= -2 * line + SIZE * 2; spaces++) {
            System.out.print(" ");
         }
         System.out.print("<>");
         
         for (int dots = 1; dots <= 4 * line - 4; dots++) {
            System.out.print(".");
         }
         System.out.print("<>");
         
         for (int spaces = 1; spaces <= -2 * line + SIZE * 2; spaces++) {
            System.out.print(" ");
         }
         
         System.out.println("|");
      }
   }
}