在java中使用HSB创建平滑渐变

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class SmoothGradientExample extends JPanel {
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;

        // 定义起始颜色和结束颜色的HSB值
        float[] startHSB = Color.RGBtoHSB(255, 0, 0, null);
        float[] endHSB = Color.RGBtoHSB(0, 0, 255, null);

        // 定义渐变的起始点和结束点的坐标
        int startX = 0;
        int startY = 0;
        int endX = getWidth();
        int endY = getHeight();

        // 创建渐变绘制对象
        GradientPaint gradient = new GradientPaint(startX, startY, Color.getHSBColor(startHSB[0], startHSB[1], startHSB[2]),
                endX, endY, Color.getHSBColor(endHSB[0], endHSB[1], endHSB[2]));

        // 设置渐变绘制对象
        g2d.setPaint(gradient);

        // 绘制渐变矩形
        g2d.fillRect(startX, startY, endX, endY);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Smooth Gradient Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 400);
        frame.add(new SmoothGradientExample());
        frame.setVisible(true);
    }
}