package algs15.perc;
import stdlib.*;

/* **************************************************************************
 *  Compilation:  javac InteractivePercolationVisualizer.java
 *  Execution:    java InteractivePercolationVisualizer N
 *  Dependencies: PercolationVisualizer.java Percolation.java StdDraw.java StdOut.java
 *
 *  This program takes the grid size N as a command-line argument.
 *  Then, the user repeatedly clicks sites to open with the mouse.
 *  After each site is opened, it draws full sites in light blue,
 *  open sites (that aren't full) in white, and blocked sites in black.
 *
 ****************************************************************************/
public class InteractivePercolationVisualizer {
  private static final int delay = 1;

  public static void main(String[] args) {
    args = new String[] { "4" };

    // N-by-N percolation system (read from command-line, default = 10)
    int N = 10;
    if (args.length == 1) N = Integer.parseInt(args[0]);

    // turn on animation mode
    StdDraw.show(0);

    // repeatedly open site specified my mouse click and draw resulting system
    StdOut.println(N);

    Percolation perc = new Percolation(N);
    PercolationVisualizer.draw(perc, N);
    StdDraw.show(delay);
    while (true) {

      // detected mouse click
      if (StdDraw.mousePressed()) {

        // screen coordinates
        double x = StdDraw.mouseX();
        double y = StdDraw.mouseY();

        // convert to row i, column j
        int i = (int) (N - Math.floor(y) - 1);
        int j = (int) (Math.floor(x));

        // open site (i, j) provided it's in bounds
        if (i >= 0 && i < N && j >= 0 && j < N) {
          if (!perc.isOpen(i, j)) {
            StdOut.println(i + " " + j);
          }
          perc.open(i, j);
        }

        // draw N-by-N percolation system
        PercolationVisualizer.draw(perc, N);
      }
      StdDraw.show(delay);
    }
  }
}