1 package Test;
2
3 import java.awt.Color;
4 import java.awt.Graphics;
5 import java.awt.Image;
6 import java.awt.Toolkit;
7
8 import javax.swing.JFrame;
9
10 public class Love extends JFrame {
11
12 private static final int width = 480;
13 private static final int height = 600;
14
15 private static int window_width = Toolkit.getDefaultToolkit().getScreenSize().width;
16 private static int window_height = Toolkit.getDefaultToolkit().getScreenSize().height;
17
18 public Love()
19 {
20 super("心形线");
21 this.setBackground(Color.BLACK);
22 this.setLocation((window_width - width) / 2, (window_height - height) / 2);
23 this.setSize(width, height);
24 this.setLayout(getLayout());
25 this.setVisible(true);
26 this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
27 }
28
29 public void paint(Graphics g)
30 {
31 double x, y, r;
32 Image image = this.createImage(width, height);
33 Graphics pic = image.getGraphics();
34
35 for(int i = 0; i < 100; i++)
36 {
37 for(int j = 0; j < 100; j++)
38 {
39 r = Math.PI / 45 + Math.PI / 45 * i * (1 - Math.sin(Math.PI / 45 * j)) * 18;
40 x = r * Math.cos(Math.PI / 45 * j) * Math.sin(Math.PI / 45 * i) + width / 2;
41 y = -r * Math.sin(Math.PI / 45 * j) + height / 2;
42 pic.setColor(Color.MAGENTA);
43 pic.fillOval((int)x, (int)y, 2, 2);
44 }
45 g.drawImage(image, 0, 0, this);
46 }
47 }
48
49 public static void main(String[] args) {
50 new Love();
51 }
52 }
