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paopao.html
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paopao.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id='elem' style='position:relative;background:#000;width:1000px;height:1000px'>
<canvas id='canvas' width='2000' height='2000' style='width:100%;height:100%'></canvas>
</div>
</body>
<script src='ui-animal.js'></script>
<script>
var panel = new CanvasDraw(canvas) ;
var elem = document.getElementById('elem');
var t = elem.offsetTop+window.pageYOffset;
var l = elem.offsetLeft+window.pageXOffset;
var cfg = [];
function render(){
panel.clear(2000,2000);
cfg.forEach(function(item,index){
panel.drawBall(item.x,item.y,item.r,item.c);
})
}
// 根据数据渲染
function loop(){
cfg.length>0;
setTimeout(function(){
loop()
cfg.forEach(function(item,index){
item.x += item.sx; //x变化
item.y += item.sy; //y变化
item.t && (item.sy += 1.2);
item.r -- ;
})
cfg = cfg.filter(function(item){
return item.r>=0;
})
render()
},16.6)
}
loop()
var prevTime = new Date().getTime()-50;
var nowTime = new Date().getTime();
elem.addEventListener('mousemove',function(e){
// 获取时间差
nowTime = new Date().getTime();
if(nowTime-prevTime>20){
prevTime = nowTime;
nowTime = new Date().getTime();
var x = (e.clientX - l)*2;
var y = (e.clientY - t)*2;
cfg.push({
x:x,
y:y,
r:rn(20,60),
c:rc(0.6),
sx:rn(-5,5),
sy:rn(-10,-5),//向上飞
t:false,
});
}
})
elem.addEventListener('click',function(e){
// 获取时间差
nowTime = new Date().getTime();
if(nowTime-prevTime>20){
prevTime = nowTime;
nowTime = new Date().getTime();
var x = (e.clientX - l)*2;
var y = (e.clientY - t)*2;
for(var i=0 ; i<20 ; i++){
cfg.push({
x:x,
y:y,
r:rn(20,60),
c:rc(0.6),
sx:rn(-8,8),
sy:rn(-10,-6),//向下飞
t:true
});
}
}
})
</script>
</html>