代码下载地址:http://www.zuidaima.com/share/1852319645518848.htm
package com.zuidaima.swing; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.Toolkit; import javax.swing.JFrame; @SuppressWarnings("serial") class Cardioid extends JFrame { // 定义窗口大小 private static final int WIDTH = 480; private static final int HEIGHT = 600; // 获取屏幕大小 private static int WINDOW_WIDTH = Toolkit.getDefaultToolkit() .getScreenSize().width; private static int WINDOW_HEIGHT = Toolkit.getDefaultToolkit() .getScreenSize().height; // 构造函数 public Cardioid() { // 设置窗口标题 super("?形线"); // 设置背景色 this.setBackground(Color.BLACK); // 设置窗口位置 this.setLocation((WINDOW_WIDTH - WIDTH) / 2, (WINDOW_HEIGHT - HEIGHT) / 2); // 设置窗口大小 this.setSize(WIDTH, HEIGHT); // 设置窗口布局 this.setLayout(getLayout()); // 设置窗口可见 this.setVisible(true); // 设置窗口默认关闭方式 this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); } public void paint(Graphics g) { double x, y, r; // 横纵坐标及半径 Image image = this.createImage(WIDTH, HEIGHT); Graphics pic = image.getGraphics(); // 绘制图形 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); } // 生成图片 g.drawImage(image, 0, 0, this); } } public static void main(String[] args) { new Cardioid(); } }
java swing实现动态心形图案的代码下载
时间: 2024-10-29 04:15:59