<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>心形,我心飞扬</title>
<script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script>
<style>
body {
margin:0;
overflow:hidden;
background:#303035;
}
</style>
</head>
<body>
<canvas></canvas>
<script>
var canvas = document.querySelector("canvas");
var ctx = canvas.getContext("2d");
//初始化页面新的数量
var num = 10;
var ww = window.innerWidth;
var wh = window.innerHeight;
var hearts = [];
function init() {
requestAnimationFrame(render);
canvas.width = ww;
canvas.height = wh;
for (var i = 0; i < num; i++) {
hearts.push(new Heart());
}
// console.log(hearts)
}
var timeaur;
$("body").on("mousedown", function(event) {
var e = event || window.event;
var x = e.clientX,
y = e.clientY;
timeaur = setInterval(function() {
console.log(123123)
hearts.push(new Heart(x, y));
num++
}, 100)
$("body").on("mousemove", function(event) {
var e = event || window.event;
var x = e.clientX,
y = e.clientY;
hearts.push(new Heart(x, y));
num++
})
})
$("body").on("mouseup", function() {
clearInterval(timeaur)
$("body").off("mousemove")
})
function Heart(x, y) {
if (x) {
this.x = x;
this.y = y;
} else {
this.x = Math.random() * ww;
this.y = Math.random() * wh;
}
this.opacity = (Math.random() * 0.5) + 0.5;
this.vel = {
x: (Math.random() - 0.5) * 4,
y: (Math.random() - 0.5) * 4
};
this.targetScale = (Math.random() * 0.15) + 0.02;
this.scale = this.targetScale * Math.random();
}
Heart.prototype.update = function() {
this.x += this.vel.x;
this.y += this.vel.y;
this.scale += (this.targetScale - this.scale) * 0.01;
if (this.x - this.width > ww || this.x + this.width < 0) {
this.scale = 0;
this.x = Math.random() * ww;
}
if (this.y - this.height > wh || this.y + this.height < 0) {
this.scale = 0;
this.y = Math.random() * wh;
}
this.width = 473.8 * this.scale;
this.height = 408.6 * this.scale;
}
Heart.prototype.draw = function() {
ctx.globalAlpha = this.opacity;
ctx.drawImage(heartImage, this.x - this.width * 0.5, this.y - this.height * 0.5, this.width, this.height);
}
function render() {
ctx.clearRect(0, 0, ww, wh);
// ctx.globalAlpha = 1;
// ctx.fillStyle = "rgba(255,255,255,0.3)";
// ctx.fillRect(0, 0, ww, wh);
for (var i = 0; i < num; i++) {
hearts[i].update();
hearts[i].draw();
}
requestAnimationFrame(render);
}
var heartImage = new Image();
heartImage.onload = init();
heartImage.src = "data:image/svg+xml;base64,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";
window.addEventListener("resize", function() {
ww = window.innerWidth;
wh = window.innerHeight;
})
</script>
</body>
</html>