public static void drawLine(int color, int x1, int y1, int x2, int y2, Graphics g) {
        if (y2 < y1) {
            int top = y2;
            y2 = y1;
            y1 = top;
        }
        if (x2 < x1) {
            int left = x2;
            x1 = x2;
            x2 = x1;
            x1 = left;
        }

        if (x1 == x2 || y1 == y2) {
            int width = x2 - x1;
            if (width == 0) {
                width = 1;
            }
            int height = y2 - y1;
            if (height == 0) {
                height = 1;
            }
            int[] rgb = new int[Math.max(width, height)];
            for (int i = 0; i < rgb.length; i++) {
                rgb[i] = color;
            }
            g.drawRGB(rgb, 0, width, x1, y1, width, height, true);
        } else {
            g.setColor(color);
            g.drawLine(x1, y1, x2, y2);
        }
    }