赞
踩
如果没有说明,你的诚心不够,来给对象一个代码表白吧!
话不多说,先上效果图:
实现代码如下:
- import java.awt.Color;
- import java.awt.Font;
- import java.awt.Graphics;
- import java.awt.Image;
- import java.awt.Toolkit;
- import javax.swing.JFrame;
-
- class Cardioid extends JFrame {
-
- //定义窗口大小
- private static final int WIDTH = 900;
- private static final int HEIGHT = 800;
-
- //获取屏幕大小
- private static final int WINDOW_WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width;
- private static final int WINDOW_HEIGHT = Toolkit.getDefaultToolkit().getScreenSize().height;
- //构造函数
- public Cardioid() {
- //设置窗口标题
- super("♥爱心");
- //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);
- //设置窗口的默认关闭方式
- this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
- }
-
- //图形函数
- public void paint(Graphics g) {
- //横纵坐标及半径
- double x, y, r;
- //绘制图形
- double z = 0.0;
- double size=10;
- int jj=0;
- while (true) {
- Image image = this.createImage(WIDTH, HEIGHT);
- Graphics pic = image.getGraphics();
- if (jj%2==0){
- size=14.5;
- }else {
- size=15;
- }
- for (int ii = 30; ii > 0; ii--) {
- Color color = new Color(255, 175, (int) (20 * Math.random()) + 220);
- for (int i = 1; i < 400; i++) {
- int px = (int) (Math.random() * 10);
- int py = (int) (Math.random() * 10);
- x = 16 * (Math.sin(z) * Math.sin(z) * Math.sin(z)) * (size) + Math.pow((-1), px) * Math.random() * ii * Math.sqrt(ii) + WIDTH / 2;
- y = -(13 * Math.cos(z) - 5 * Math.cos(2 * z) - 2 * Math.cos(3 * z) - Math.cos(4 * z)) * (size) + Math.pow((-1), py) * Math.random() * ii * Math.sqrt(ii) + HEIGHT * 1 / 3;
- z += (Math.PI / 2.0) / 80;
- pic.setColor(color);
- pic.fillOval((int) x, (int) y, 2, 2);
- }
- if (ii < 3) {
- pic.setFont(new Font("楷体", Font.BOLD, 40));//设置字体
- pic.setColor(Color.pink);//字体颜色
- //可自定义字体哦
- pic.drawString("Love You", WIDTH / 2 - 100, 240);//绘制字符串
- pic.drawString("爱你一万年!", WIDTH / 2, 280);//绘制字符串
- g.drawImage(image, 0, 0, this);
- }
- }
- jj++;
- if (jj>100){
- break;
- }
- try {
- Thread.sleep(500);
- } catch (InterruptedException e) {
- e.printStackTrace();
- }
- }
- }
-
- public static void main(String[] args) {
- new Cardioid();
- }
-
- }
-
-
-
-
- <!DOCTYPE html>
- <html>
- <head>
- <title></title>
- </head>
- <style>
- * {
- padding: 0;
- margin: 0;
- }
- html,
- body {
- height: 100%;
- padding: 0;
- margin: 0;
- background: #000;
- }
- canvas {
- position: absolute;
- width: 100%;
- height: 100%;
- }
- /* 字体的设置 */
- #name {
- position: absolute;
- top: 50%;
- left: 50%;
- transform: translate(-50%, -50%);
- margin-top: -20px;
- font-size: 46px;
- color: #ea80b0;
- }
- .aa {
- position: fixed;
- left: 50%;
- bottom: 10px;
- color: #ccc;
- }
- </style>
- <body>
- <canvas id="pinkboard"></canvas>
- <!-- 在下面加名字 -->
- <div id="name" style="color: pink;">爱你一万年</div>
-
- <script>
- /*
- * Settings
- */
- var settings = {
- particles: {
- length: 500, // maximum amount of particles
- duration: 2, // particle duration in sec
- velocity: 100, // particle velocity in pixels/sec
- effect: -0.75, // play with this for a nice effect
- size: 30 // particle size in pixels
- }
- };
-
- /*
- * RequestAnimationFrame polyfill by Erik M?ller
- */
- (function () {
- var b = 0;
- var c = ["ms", "moz", "webkit", "o"];
- for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {
- window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"];
- window.cancelAnimationFrame =
- window[c[a] + "CancelAnimationFrame"] ||
- window[c[a] + "CancelRequestAnimationFrame"];
- }
- if (!window.requestAnimationFrame) {
- window.requestAnimationFrame = function (h, e) {
- var d = new Date().getTime();
- var f = Math.max(0, 16 - (d - b));
- var g = window.setTimeout(function () {
- h(d + f);
- }, f);
- b = d + f;
- return g;
- };
- }
- if (!window.cancelAnimationFrame) {
- window.cancelAnimationFrame = function (d) {
- clearTimeout(d);
- };
- }
- })();
-
- /*
- * Point class
- */
- var Point = (function () {
- function Point(x, y) {
- this.x = typeof x !== "undefined" ? x : 0;
- this.y = typeof y !== "undefined" ? y : 0;
- }
- Point.prototype.clone = function () {
- return new Point(this.x, this.y);
- };
- Point.prototype.length = function (length) {
- if (typeof length == "undefined")
- return Math.sqrt(this.x * this.x + this.y * this.y);
- this.normalize();
- this.x *= length;
- this.y *= length;
- return this;
- };
- Point.prototype.normalize = function () {
- var length = this.length();
- this.x /= length;
- this.y /= length;
- return this;
- };
- return Point;
- })();
-
- /*
- * Particle class
- */
- var Particle = (function () {
- function Particle() {
- this.position = new Point();
- this.velocity = new Point();
- this.acceleration = new Point();
- this.age = 0;
- }
- Particle.prototype.initialize = function (x, y, dx, dy) {
- this.position.x = x;
- this.position.y = y;
- this.velocity.x = dx;
- this.velocity.y = dy;
- this.acceleration.x = dx * settings.particles.effect;
- this.acceleration.y = dy * settings.particles.effect;
- this.age = 0;
- };
- Particle.prototype.update = function (deltaTime) {
- this.position.x += this.velocity.x * deltaTime;
- this.position.y += this.velocity.y * deltaTime;
- this.velocity.x += this.acceleration.x * deltaTime;
- this.velocity.y += this.acceleration.y * deltaTime;
- this.age += deltaTime;
- };
- Particle.prototype.draw = function (context, image) {
- function ease(t) {
- return --t * t * t + 1;
- }
- var size = image.width * ease(this.age / settings.particles.duration);
- context.globalAlpha = 1 - this.age / settings.particles.duration;
- context.drawImage(
- image,
- this.position.x - size / 2,
- this.position.y - size / 2,
- size,
- size
- );
- };
- return Particle;
- })();
-
- /*
- * ParticlePool class
- */
- var ParticlePool = (function () {
- var particles,
- firstActive = 0,
- firstFree = 0,
- duration = settings.particles.duration;
-
- function ParticlePool(length) {
- // create and populate particle pool
- particles = new Array(length);
- for (var i = 0; i < particles.length; i++)
- particles[i] = new Particle();
- }
- ParticlePool.prototype.add = function (x, y, dx, dy) {
- particles[firstFree].initialize(x, y, dx, dy);
-
- // handle circular queue
- firstFree++;
- if (firstFree == particles.length) firstFree = 0;
- if (firstActive == firstFree) firstActive++;
- if (firstActive == particles.length) firstActive = 0;
- };
- ParticlePool.prototype.update = function (deltaTime) {
- var i;
-
- // update active particles
- if (firstActive < firstFree) {
- for (i = firstActive; i < firstFree; i++)
- particles[i].update(deltaTime);
- }
- if (firstFree < firstActive) {
- for (i = firstActive; i < particles.length; i++)
- particles[i].update(deltaTime);
- for (i = 0; i < firstFree; i++) particles[i].update(deltaTime);
- }
-
- // remove inactive particles
- while (
- particles[firstActive].age >= duration &&
- firstActive != firstFree
- ) {
- firstActive++;
- if (firstActive == particles.length) firstActive = 0;
- }
- };
- ParticlePool.prototype.draw = function (context, image) {
- // draw active particles
- if (firstActive < firstFree) {
- for (i = firstActive; i < firstFree; i++)
- particles[i].draw(context, image);
- }
- if (firstFree < firstActive) {
- for (i = firstActive; i < particles.length; i++)
- particles[i].draw(context, image);
- for (i = 0; i < firstFree; i++) particles[i].draw(context, image);
- }
- };
- return ParticlePool;
- })();
-
- /*
- * Putting it all together
- */
- (function (canvas) {
- var context = canvas.getContext("2d"),
- particles = new ParticlePool(settings.particles.length),
- particleRate =
- settings.particles.length / settings.particles.duration, // particles/sec
- time;
-
- // get point on heart with -PI <= t <= PI
- function pointOnHeart(t) {
- return new Point(
- 160 * Math.pow(Math.sin(t), 3),
- 130 * Math.cos(t) -
- 50 * Math.cos(2 * t) -
- 20 * Math.cos(3 * t) -
- 10 * Math.cos(4 * t) +
- 25
- );
- }
-
- // creating the particle image using a dummy canvas
- var image = (function () {
- var canvas = document.createElement("canvas"),
- context = canvas.getContext("2d");
- canvas.width = settings.particles.size;
- canvas.height = settings.particles.size;
- // helper function to create the path
- function to(t) {
- var point = pointOnHeart(t);
- point.x =
- settings.particles.size / 2 +
- (point.x * settings.particles.size) / 350;
- point.y =
- settings.particles.size / 2 -
- (point.y * settings.particles.size) / 350;
- return point;
- }
- // create the path
- context.beginPath();
- var t = -Math.PI;
- var point = to(t);
- context.moveTo(point.x, point.y);
- while (t < Math.PI) {
- t += 0.01; // baby steps!
- point = to(t);
- context.lineTo(point.x, point.y);
- }
- context.closePath();
- // create the fill
- context.fillStyle = "#ea80b0";
- context.fill();
- // create the image
- var image = new Image();
- image.src = canvas.toDataURL();
- return image;
- })();
-
- // render that thing!
- function render() {
- // next animation frame
- requestAnimationFrame(render);
-
- // update time
- var newTime = new Date().getTime() / 1000,
- deltaTime = newTime - (time || newTime);
- time = newTime;
-
- // clear canvas
- context.clearRect(0, 0, canvas.width, canvas.height);
-
- // create new particles
- var amount = particleRate * deltaTime;
- for (var i = 0; i < amount; i++) {
- var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
- var dir = pos.clone().length(settings.particles.velocity);
- particles.add(
- canvas.width / 2 + pos.x,
- canvas.height / 2 - pos.y,
- dir.x,
- -dir.y
- );
- }
-
- // update and draw particles
- particles.update(deltaTime);
- particles.draw(context, image);
- }
-
- // handle (re-)sizing of the canvas
- function onResize() {
- canvas.width = canvas.clientWidth;
- canvas.height = canvas.clientHeight;
- }
- window.onresize = onResize;
-
- // delay rendering bootstrap
- setTimeout(function () {
- onResize();
- render();
- }, 10);
- })(document.getElementById("pinkboard"));
- </script>
- </body>
- </html>
Copyright © 2003-2013 www.wpsshop.cn 版权所有,并保留所有权利。