Java实现渐变和旋转效果

willyomg

1. package com;
   
2. 
   
3. import java.awt.Color;
   
4. import java.awt.Font;
   
5. import java.awt.GradientPaint;
   
6. import java.awt.Graphics;
   
7. import java.awt.Graphics2D;
   
8. import java.awt.Headless Exception;
   
9. 
   
10. import javax.swing.JFrame;
    
11. 
    
12. public class Demo extends JFrame {
    
13. 
    
14. public Demo(String title) throws Headless Exception {
    
15.   super(title);
    
16.   this.setSize(500, 500);
    
17.   this.setDefaultCloseOperation(3);
    
18.   this.setLocationRelativeTo(null);
    
19.   this.setVisible(true);
    
20. }
    
21. 
    
22. @Override
    
23. public void paint(Graphics g) {
    
24.   super.paint(g);
    
25.   Graphics2D g2d = (Graphics2D) g;
    
26. 
    
27. 
    
28. // 绘制渐变
    
29.   // g2d.setPaint(new GradientPaint(0, 0, Color.RED,
    
30.   // getWidth(),getHeight(), Color.YELLOW));
    
31.   // g2d.fillRect(0, 0, getWidth(),getHeight());
    
32.   // g2d.fillOval(250, 250, 200, 200);
    
33.   g2d.setPaint(new GradientPaint(0, 0, Color.BLUE, 500, 0, Color.WHITE));
    
34. 
    
35.   // g2d.fillOval(50, 50, 200, 200);
    
36.   // 平移原点到图形环境的中心
    
37.   g2d.translate(250, 250);
    
38.   // g2d.setPaint(Color.RED);
    
39.   // g2d.rotate();
    
40.   g2d.setFont(new Font("宋体", Font.BOLD, 28));
    
41.   // g2d.rotate(-20 * Math.PI / 180);
    
42.   g2d.drawString("Java Graphics2D 实现文字渐变效果", -250, -200);
    
43.   // g2d.fillRect(0, 0, getWidth(), getHeight());
    
44. 
    
45.   // g2d.translate(this.getWidth() / 2, this.getHeight() / 2);
    
46.   // // 旋转文本
    
47. 
    
48.   GradientPaint g1 = new GradientPaint(0, 0, Color.RED, 500, 0, Color.YELLOW);
    
49.   GradientPaint g2 = new GradientPaint(0, 0, Color.BLUE, 500, 0, Color.GREEN);
    
50. 
    
51.   for (int i = 0; i < 12; i++) {
    
52.    g2d.rotate(30 * Math.PI / 180);
    
53.    // g2d.setPaint(colors[i % 2]);
    
54.    if (i % 2 == 0) {
    
55.     g2d.setPaint(g1);
    
56.    } else {
    
57.     g2d.setPaint(g2);
    
58.    }
    
59.    g2d.drawString("Java 2D 旋转效果 ", 0, 0);
    
60.   }
    
61. }
    
62. 
    
63. public static void main(String[] args) {
    
64.   new Demo("Graphics");
    
65. }
    
66. }

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wb112200

{:3_196:} 能不能以代码的形式贴 这样贴出来的有些符号被表情代替了》。。。

willyomg

回复 2# wb112200


    已改正，谢谢啦