java褪色

问题描述

我最近完成了路径查找可视化器的工作。我想知道是否可以使用图形包将颜色从白色开始，然后逐渐淡入青色或黑色。现在，我拥有一种颜色可以立即出现的地方，并认为如果颜色能够彼此淡出，它看起来会更好。这是我到目前为止的代码和输出图片

Path finding Visualizer

public void paintComponent(Graphics g) {
        super.paintComponent(g);
        for (int x = 0; x 

思路一：

这里是一种方法。它使用计时器来定期减少rgb配色方案中的红色分量。

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;

public class ColorFadingDemo extends JPanel implements ActionListener {

    Color color = new Color(255,0,0);
    final static int height = 500;
    final static int width = 500;
    final static String title = "default title";

    JFrame frame = new JFrame(title);

    public static void main(String[] args) {
        SwingUtilities.invokeLater(
                () -> new ColorFadingDemo().start());
    }

    public void start() {
       Timer timer = new Timer(0, this);
       timer.setDelay(20);
       timer.start();
    }

    public void actionPerformed(ActionEvent ae) {
       int rgb = color.getRGB();
       rgb -= 0x10000;
       color = new Color(rgb);
       repaint();
    }
    public ColorFadingDemo() {
        frame.setDefaultCloseOperation(
                JFrame.EXIT_ON_CLOSE);
        frame.add(this);
        setPreferredSize(
                new Dimension(width, height));
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }


    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g.create();
        g2d.setRenderingHint(
                RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setColor(color);
        g2d.fillRect(100,100,300,300);
        g2d.dispose();

    }
}

思路二：

简易：

int transparency = 0; // Transparency value;
int R = 255, G = 0, B = 0; //Enter your RGB values
Color c; // The color that you can then use in your paint method
Thread t = new Thread() {
   public void run() {
      while (transparency