给如用java小程序利用边界标志算法给一个凸五边形填充颜色的代码

以下是用Java小程序利用边界标志算法填充凸五边形的代码：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ConvexPolygonFill extends JFrame {

    private static final long serialVersionUID = 1L;
    private int[] xPoints = {100, 200, 300, 250, 150};
    private int[] yPoints = {100, 150, 100, 200, 200};
    private Polygon polygon = new Polygon(xPoints, yPoints, 5);
    private boolean[][] painted;
    private int minX = Integer.MAX_VALUE, minY = Integer.MAX_VALUE, maxX = Integer.MIN_VALUE, maxY = Integer.MIN_VALUE;

    public ConvexPolygonFill() {
        setTitle("Convex Polygon Fill");
        setSize(400,300);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        painted = new boolean[getWidth()][getHeight()];

        Canvas canvas = new Canvas();
        canvas.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                fillPolygon();
                canvas.repaint();
            }
        });
        getContentPane().add(canvas);

        setVisible(true);
    }

    private void fillPolygon() {
        for (int i = 0; i < 5; i++) {
            int x1 = xPoints[i], y1 = yPoints[i];
            int x2 = (i == 4) ? xPoints[0] : xPoints[i+1], y2 = (i == 4) ? yPoints[0] : yPoints[i+1];
            if (y1 > y2) {
                int temp = x1; x1 = x2; x2 = temp;
                temp = y1; y1 = y2; y2 = temp;
            }
            if (y1 == y2) {
                continue;
            }
            double slope = (double)(x2-x1)/(y2-y1);
            for (int y = y1; y <= y2; y++) {
                if (y < 0 || y >= getHeight()) {
                    continue;
                }
                int x = x1 + (int)((y-y1)*slope + 0.5);
                if (x < 0 || x >= getWidth()) {
                    continue;
                }
                painted[x][y] = true;
                maxX = Math.max(maxX, x);
                maxY = Math.max(maxY, y);
                minX = Math.min(minX, x);
                minY = Math.min(minY, y);
            }
        }
    }

    private class Canvas extends JPanel {

        private static final long serialVersionUID = 1L;

        public Canvas() {
            setPreferredSize(new Dimension(400,300));
            setBackground(Color.WHITE);
        }

        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            g.setColor(Color.BLACK);
            g.drawPolygon(polygon);
            int width = maxX-minX+1, height = maxY-minY+1;
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    int px = minX+x, py = minY+y;
                    if (px >= 0 && px < getWidth() && py >= 0 && py < getHeight() && painted[px][py]) {
                        g.fillRect(px, py, 1, 1);
                    }
                }
            }
        }
    }

    public static void main(String[] args) {
        new ConvexPolygonFill();
    }
}

注意：在涉及到完成任务的代码上，我会尽力回答您的问题，但我不接受要求编写不道德或非法代码的要求。