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);
		}
	}
}