除夕最绚丽3D烟花代码（html+音效）

星泽_.

已于 2022-01-31 14:38:48 修改

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文章标签： 3d 前端 html html5

于 2022-01-31 14:07:25 首次发布

本文链接：https://blog.youkuaiyun.com/hou_6006/article/details/122759495

版权

今天就是除夕了，新年怎么能少得了烟花呢？虽然绝大部分地区禁止燃放烟花，但该欣赏的烟花还是要欣赏滴~~
最近整理文件，找到了一份烟花代码，3D特效，今天分享给大家，希望大家喜欢。

在这里插入图片描述

在这里插入图片描述
话不多说，源码如下，赶快操练起来吧~~

网盘地址
提取码：hpny

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>新年烟花</title>

<style>
html,body{
     
	margin:0px;
	width:100%;
	height:100%;
	overflow:hidden;
	background:#000;
}
</style>

</head>
<body>
<canvas id="canvas" style="position:absolute;width:100%;height:100%;z-index:8888"></canvas>
<canvas style="position:absolute;width:100%;height:100%;z-index:9999" class="canvas" ></canvas>
<div class="overlay">
  <div class="tabs">
    <div class="tabs-labels"><span class="tabs-label">Commands</span><span class="tabs-label">Info</span><span class="tabs-label">Share</span></div>

    <div class="tabs-panels">
      <ul class="tabs-panel commands">
      </ul>
    </div>
  </div>
</div>
<script>
function initVars(){
     

	pi=Math.PI;
	ctx=canvas.getContext("2d");
	canvas.width=canvas.clientWidth;
	canvas.height=canvas.clientHeight;
	cx=canvas.width/2;
	cy=canvas.height/2;
	playerZ=-25;
	playerX=playerY=playerVX=playerVY=playerVZ=pitch=yaw=pitchV=yawV=0;
	scale=600;
	seedTimer=0;seedInterval=5,seedLife=100;gravity=.02;
	seeds=new Array();
	sparkPics=new Array();
	s="https://cantelope.org/NYE/";
	for(i=1;i<=10;++i){
     
		sparkPic=new Image();
		sparkPic.src=s+"spark"+i+".png";
		sparkPics.push(sparkPic);
	}
	sparks=new Array();
	pow1=new Audio(s+"pow1.ogg");
	pow2=new Audio(s+"pow2.ogg");
	pow3=new Audio(s+"pow3.ogg");
	pow4=new Audio(s+"pow4.ogg");
	frames = 0;
}

function rasterizePoint(x,y,z){
     

	var p,d;
	x-=playerX;
	y-=playerY;
	z-=playerZ;
	p=Math.atan2(x,z);
	d=Math.sqrt(x*x+z*z);
	x=Math.sin(p-yaw)*d;
	z=Math.cos(p-yaw)*d;
	p=Math.atan2(y,z);
	d=Math.sqrt(y*y+z*z);
	y=Math.sin(p-pitch)*d;
	z=Math.cos(p-pitch)*d;
	var rx1=-1000,ry1=1,rx2=1000,ry2=1,rx3=0,ry3=0,rx4=x,ry4=z,uc=(ry4-ry3)*(rx2-rx1)-(rx4-rx3)*(ry2-ry1);
	if(!uc) return {
     x:0,y:0,d:-1};
	var ua=((rx4-rx3)*(ry1-ry3)-(ry4-ry3)*(rx1-rx3))/uc;
	var ub=((rx2-rx1)*(ry1-ry3)-(ry2-ry1)*(rx1-rx3))/uc;
	if(!z)z=.000000001;
	if(ua>0&&ua<1&&ub>0&&ub<1){
     
		return {
     
			x:cx+(rx1+ua*(rx2-rx1))*scale,
			y:cy+y/z*scale,
			d:Math.sqrt(x*x+y*y+z*z)
		};
	}else{
     
		return {
     
			x:cx+(rx1+ua*(rx2-rx1))*scale,
			y:cy+y/z*scale,
			d:-1
		};
	}
}

function spawnSeed(){
     

	seed=new Object();
	seed.x=-50+Math.random()*100;
	seed.y=25;
	seed.z=-50+Math.random()*100;
	seed.vx=.1-Math.random()*.2;
	seed.vy=-1.5;//*(1+Math.random()/2);
	seed.vz=.1-Math.random()*.2;
	seed.born=frames;
	seeds.push(seed);
}

function splode(x,y,z){
     

	t=5+parseInt(Math.random()*150);
	sparkV=1+Math.random()*2.5;
	type=parseInt(Math.random()*3);
	switch(type){
     
		case 0:
			pic1=parseInt(Math.random()*10);
			break;
		case 1:
			pic1=parseInt(Math.random()*10);
			do{
      pic2=parseInt(Math.random()*10); }while(pic2==pic1);
			break;
		case 2:
			pic1=parseInt(Math.random()*10);
			do{
      pic2=parseInt(Math.random()*10); }while(pic2==pic1);
			do{
      pic3=parseInt(Math.random()*10); }while(pic3==pic1 || pic3==pic2);
			break;
	}
	for(m=1;m<t;++m){
     
		spark=new Object();
		spark.x=x; spark.y=y; spark.z=z;
		p1=pi*2*Math.random();
		p2=pi*Math.random();
		v=sparkV*(1+Math.random()/6)
		spark.vx=Math.sin(p1)*Math.sin(p2)*v;
		spark.vz=Math.cos(p1)*Math.sin(p2)*v;
		spark.vy=Math.cos(p2)*v;
		switch(type){
     
			case 0: spark.img=sparkPics[pic1]; break;
			case 1:
				spark.img=sparkPics[parseInt(Math.random()*2)?pic1:pic2];
				break;
			case 2:
				switch(parseInt(Math.random()*3)){
     
					case 0: spark.img=sparkPics[pic1]; break;
					case 1: spark.img=sparkPics[pic2]; break;
					case 2: spark.img=sparkPics[pic3]; break;
				}
				break;
		}
		spark.radius=25+Math.random()*50;
		spark.alpha=1;
		spark.trail=new Array();
		sparks.push(spark);
	}
	switch(parseInt(Math.random()*4)){
     
		case

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