代码如下：
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import javax.swing.JFrame;
@SuppressWarnings(“serial”)
public class Demo extends JFrame implements Runnable {
// 定义加载窗口大小
public static final int GAME_WIDTH = 500;
public static final int GAME_HEIGHT = 500;
// 获取屏幕窗口大小
public static final int WIDTH = Toolkit.getDefaultToolkit()
.getScreenSize().width;
public static final int HEIGHT = Toolkit.getDefaultToolkit()
.getScreenSize().height;
public Demo() {
// 设置窗口标题
this.setTitle(“心形曲线”);
// 设置窗口初始位置
this.setLocation((WIDTH – GAME_WIDTH) / 2, (HEIGHT – GAME_HEIGHT) / 2);
// 设置窗口大小
this.setSize(GAME_WIDTH, GAME_HEIGHT);
// 设置背景色
this.setBackground(Color.BLACK);
// 设置窗口关闭方式
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 设置窗口显示
this.setVisible(true);
}
@Override
public void paint(Graphics g) {
double x, y, r;
Image OffScreen = createImage(GAME_WIDTH, GAME_HEIGHT);
Graphics drawOffScreen = OffScreen.getGraphics();
for (int i = 0; i < 90; i++) {
for (int j = 0; j < 90; j++) {
r = 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)
+ GAME_WIDTH / 2;
y = -r * Math.sin(Math.PI / 45 * j) + GAME_HEIGHT / 4;
//设置画笔颜色
drawOffScreen.setColor(Color.PINK);
// 绘制椭圆
drawOffScreen.fillOval((int) x, (int) y, 2, 2);
}
// 生成图片
g.drawImage(OffScreen, 0, 0, this);
}
}
public static void main(String[] args) {
Demo demo = new Demo();
Thread t = new Thread(demo);
t.start();
}
@Override
public void run() {
while (true) {
try {
Thread.sleep(2000);
this.repaint();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
效果图：
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/181202.html原文链接：https://javaforall.net
