// draw N-by-N percolation system public static void draw(Percolation perc, int N) { StdDraw.clear(); StdDraw.setPenColor(StdDraw.BLACK); StdDraw.setXscale(-.05 * N, 1.05 * N); StdDraw.setYscale(-.05 * N, 1.05 * N); // leave a border to write text StdDraw.filledSquare(N / 2.0, N / 2.0, N / 2.0); // draw N-by-N grid int opened = 0; for (int row = 1; row <= N; row++) { for (int col = 1; col <= N; col++) { if (perc.isFull(row, col)) { StdDraw.setPenColor(StdDraw.BOOK_LIGHT_BLUE); opened++; } else if (perc.isOpen(row, col)) { StdDraw.setPenColor(StdDraw.WHITE); opened++; } else StdDraw.setPenColor(StdDraw.BLACK); StdDraw.filledSquare(col - 0.5, N - row + 0.5, 0.45); } } // write status text StdDraw.setFont(new Font("SansSerif", Font.PLAIN, 12)); StdDraw.setPenColor(StdDraw.BLACK); StdDraw.text(.25 * N, -N * .025, opened + " open sites"); if (perc.percolates()) StdDraw.text(.75 * N, -N * .025, "percolates"); else StdDraw.text(.75 * N, -N * .025, "does not percolate"); }