©2020-2024 ioDraw All rights reserved
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD>
<meta charset="utf-8" /> <TITLE>loveYou</TITLE> <META NAME="Generator"
CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords"
CONTENT=""> <META NAME="Description" CONTENT=""> <style> html, body { height:
100%; padding: 0; margin: 0; background: #000; } canvas { position: absolute;
width: 100%; height: 100%; } #name { position: absolute; top: 50%; left: 50%;
transform: translate(-50%, -50%); margin-top: -20px; font-size: 46px; color:
#ea80b0; } </style> </HEAD> <BODY> <canvas id="pinkboard"></canvas>
<!--这里改名字，直接改内容--> <!--color换颜色--> <div id="name"
style="color:pink;">点燃我，温暖你</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 Möller */
(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>
效果图：
动态的，但是这只是其中一张静态截屏，直接复制代码到html文件即可运行，无脑可冲！
PS：爱心中间加字可在第38行中替换“点燃我温暖你”文本内容
<!--这里改名字，直接改内容--> <!--color换颜色--> <div id="name"
style="color:pink;">点燃我，温暖你</div>