package com.demo.swing; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.Toolkit; import javax.swing.JFrame; public class LoveHeart2 extends JFrame { //���崰�ڴ�С private static final int WIDTH = 480; private static final int HEIGHT = 600; //��ȡ�Ļ��С private static int WINDOW_WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width; private static int WINDOW_HEIGHT = Toolkit.getDefaultToolkit().getScreenSize().height; public static void main(String[] args) { new LoveHeart2(); } public LoveHeart2() { //���ô��ڱ��� super("����"); //���ñ���ɫ this.setBackground(Color.BLACK); //���ô���λ�� this.setLocation((WINDOW_WIDTH - WIDTH) / 2, (WINDOW_HEIGHT - HEIGHT) / 2); //���ô��ڴ�С this.setSize(WIDTH, HEIGHT); //���ô��ڲ��� this.setLayout(getLayout()); //���ô��ڿɼ� this.setVisible(true); //���ô���Ĭ�Ϲرշ�ʽ this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); } public void paint(Graphics g) { double x, y, r; //������꼰�뾶 Image image = this.createImage(WIDTH, HEIGHT); Graphics pic = image.getGraphics(); //����ͼ�� for (int i = 0; i < 100; i++) { for (int j = 0; j < 100; j++) { r = Math.PI / 45 + Math.PI / 45 * i * (1 - Math.sin(Math.PI / 45 * j)) * 18; x = r * Math.cos(Math.PI / 45 * j) * Math.sin(Math.PI / 45 * i) + WIDTH / 2; y = -r * Math.sin(Math.PI / 45 * j) + HEIGHT / 2; pic.setColor(Color.MAGENTA); pic.fillOval((int) x, (int) y, 2, 2); } //���ͼƬ g.drawImage(image, 0, 0, this); } } }