1.3D烟花
yanhua3D.js
var yanhua3D = function(){ var yanhua; 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 0: pow=new Audio(s+"pow1.ogg"); break; case 1: pow=new Audio(s+"pow2.ogg"); break; case 2: pow=new Audio(s+"pow3.ogg"); break; case 3: pow=new Audio(s+"pow4.ogg"); break; } d=Math.sqrt((x-playerX)*(x-playerX)+(y-playerY)*(y-playerY)+(z-playerZ)*(z-playerZ)); pow.volume=1.5/(1+d/10); pow.play(); } function doLogic(){ if(seedTimer<frames){ seedTimer=frames+seedInterval*Math.random()*10; spawnSeed(); } for(i=0;i<seeds.length;++i){ seeds[i].vy+=gravity; seeds[i].x+=seeds[i].vx; seeds[i].y+=seeds[i].vy; seeds[i].z+=seeds[i].vz; if(frames-seeds[i].born>seedLife){ splode(seeds[i].x,seeds[i].y,seeds[i].z); seeds.splice(i,1); } } for(i=0;i<sparks.length;++i){ if(sparks[i].alpha>0 && sparks[i].radius>5){ sparks[i].alpha-=.01; sparks[i].radius/=1.02; sparks[i].vy+=gravity; point=new Object(); point.x=sparks[i].x; point.y=sparks[i].y; point.z=sparks[i].z; if(sparks[i].trail.length){ x=sparks[i].trail[sparks[i].trail.length-1].x; y=sparks[i].trail[sparks[i].trail.length-1].y; z=sparks[i].trail[sparks[i].trail.length-1].z; d=((point.x-x)*(point.x-x)+(point.y-y)*(point.y-y)+(point.z-z)*(point.z-z)); if(d>9){ sparks[i].trail.push(point); } }else{ sparks[i].trail.push(point); } if(sparks[i].trail.length>5)sparks[i].trail.splice(0,1); sparks[i].x+=sparks[i].vx; sparks[i].y+=sparks[i].vy; sparks[i].z+=sparks[i].vz; sparks[i].vx/=1.075; sparks[i].vy/=1.075; sparks[i].vz/=1.075; }else{ sparks.splice(i,1); } } p=Math.atan2(playerX,playerZ); d=Math.sqrt(playerX*playerX+playerZ*playerZ); d+=Math.sin(frames/80)/1.25; t=Math.sin(frames/200)/40; playerX=Math.sin(p+t)*d; playerZ=Math.cos(p+t)*d; yaw=pi+p+t; } function rgb(col){ var r = parseInt((.5+Math.sin(col)*.5)*16); var g = parseInt((.5+Math.cos(col)*.5)*16); var b = parseInt((.5-Math.sin(col)*.5)*16); return "#"+r.toString(16)+g.toString(16)+b.toString(16); } function draw(){ ctx.clearRect(0,0,cx*2,cy*2); ctx.fillStyle="#ff8"; for(i=-100;i<100;i+=3){ for(j=-100;j<100;j+=4){ x=i;z=j;y=25; point=rasterizePoint(x,y,z); if(point.d!=-1){ size=250/(1+point.d); d = Math.sqrt(x * x + z * z); a = 0.75 - Math.pow(d / 100, 6) * 0.75; if(a>0){ ctx.globalAlpha = a; ctx.fillRect(point.x-size/2,point.y-size/2,size,size); } } } } ctx.globalAlpha=1; for(i=0;i<seeds.length;++i){ point=rasterizePoint(seeds[i].x,seeds[i].y,seeds[i].z); if(point.d!=-1){ size=200/(1+point.d); ctx.fillRect(point.x-size/2,point.y-size/2,size,size); } } point1=new Object(); for(i=0;i<sparks.length;++i){ point=rasterizePoint(sparks[i].x,sparks[i].y,sparks[i].z); if(point.d!=-1){ size=sparks[i].radius*200/(1+point.d); if(sparks[i].alpha<0)sparks[i].alpha=0; if(sparks[i].trail.length){ point1.x=point.x; point1.y=point.y; switch(sparks[i].img){ case sparkPics[0]:ctx.strokeStyle="#f84";break; case sparkPics[1]:ctx.strokeStyle="#84f";break; case sparkPics[2]:ctx.strokeStyle="#8ff";break; case sparkPics[3]:ctx.strokeStyle="#fff";break; case sparkPics[4]:ctx.strokeStyle="#4f8";break; case sparkPics[5]:ctx.strokeStyle="#f44";break; case sparkPics[6]:ctx.strokeStyle="#f84";break; case sparkPics[7]:ctx.strokeStyle="#84f";break; case sparkPics[8]:ctx.strokeStyle="#fff";break; case sparkPics[9]:ctx.strokeStyle="#44f";break; } for(j=sparks[i].trail.length-1;j>=0;--j){ point2=rasterizePoint(sparks[i].trail[j].x,sparks[i].trail[j].y,sparks[i].trail[j].z); if(point2.d!=-1){ ctx.globalAlpha=j/sparks[i].trail.length*sparks[i].alpha/2; ctx.beginPath(); ctx.moveTo(point1.x,point1.y); ctx.lineWidth=1+sparks[i].radius*10/(sparks[i].trail.length-j)/(1+point2.d); ctx.lineTo(point2.x,point2.y); ctx.stroke(); point1.x=point2.x; point1.y=point2.y; } } } ctx.globalAlpha=sparks[i].alpha; ctx.drawImage(sparks[i].img,point.x-size/2,point.y-size/2,size,size); } } } function frame(){ if(frames>100000){ seedTimer=0; frames=0; } frames++; draw(); doLogic(); requestAnimationFrame(frame); } function bind(){ window.addEventListener("resize",function(){ canvas.width=canvas.clientWidth; canvas.height=canvas.clientHeight; cx=canvas.width/2; cy=canvas.height/2; }); } function init(){ //初始化canvas var yanhua3d = document.getElementById("yanhua3d"); yanhua3d.style.backgroundColor="#000"; var canvas = document.createElement("canvas"); canvas.id="canvas"; canvas.style.width="100%"; canvas.style.height="100%"; yanhua3d.appendChild(canvas); initVars(); bind(); frame(); }; yanhua = { create3Dyuanhua:init }; return yanhua; }();
yanhua3D.css
@charset "utf-8"; html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, font, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td{margin:0;padding:0;border:0;outline:0;font-size:100%;vertical-align:baseline;background:transparent} body{line-height:1} ol, ul{list-style:none} blockquote, q{quotes:none} blockquote:before, blockquote:after, q:before, q:after{content:'';content:none} :focus{outline:0} ins{text-decoration:none} del{text-decoration:line-through} table{border-collapse:collapse;border-spacing:0} a{text-decoration:none;color:#fff} body{font-family:"Kreon";font-weight:300;color:#333;background:#f5f5f5} #switcher{height:54px;z-index:99999;position:fixed;100%;top:0;background:#000;} .center{100%;padding-top:0} .center ul li{display:inline;float:left;position:relative} .logoTop,.top2{margin-left:30px;margin-top:20px;color:#fff;font-weight:bold;font-family:"微软雅黑"} .top2{position:relative;margin-top:16px;font-size:12px;font-weight:normal;background-image:url(../i/2vm.png);background-repeat:no-repeat;background-position:3px center;height:20px;padding-left:25px;line-height:20px;border:1px solid #414141;padding-right:5px;border-radius:5px;} .vm{position:absolute;top:20px;left:0px;background-color:#fff;height:170px;150px;display:none;padding:30px;} .top2:hover .vm{display:block} .logoTop a:hover{text-decoration:underline} li.remove_frame{margin-left:17px;float:right!important;margin-right:30px} li.remove_frame a{background:url(../i/cross2.png) no-repeat 0 0;20px;height:21px;display:block;margin-top:18px;transition:all .3s ease-out 0s} li.remove_frame a:hover{background-position:0 -21px} #iframe{margin-top:0} .icon-monitor, .icon-tablet, .icon-mobile-1, .icon-mobile-2, .icon-mobile-3{margin-right:7px;margin-top:20px;17px;height:16px;background:url(../i/mon-spr.png) no-repeat;} .icon-monitor{margin-left:10px;background-position:0 0;} .icon-tablet{background-position:-24px 0} .icon-mobile-1{background-position:-49px 0} .icon-monitor:hover, .icon-monitor.active{background-position:0 -16px} .icon-tablet:hover, .icon-tablet.active{background-position:-24px -16px} .icon-mobile-1:hover, .icon-mobile-1.active{background-position:-49px -16px} .icon-mobile-2{background-position:-71px 0} .icon-mobile-3{background-position:-94px 0} .icon-mobile-2:hover, .icon-mobile-2.active{background-position:-71px -16px} .icon-mobile-3:hover, .icon-mobile-3.active{background-position:-94px -16px} #iframe-wrap{height:100%;overflow:visible;position:relative;top:54px;z-index:50} .tablet-width{height:960px!important;margin:0 auto;padding:175px 100px 115px 100px;785px;margin-top:40px;background:url(../i/bg-mob.png) no-repeat 0 0} .tablet-width iframe{height:960px!important} .mobile-width{height:703px!important;margin:0 auto;padding:165px 115px 100px 100px;1041px;margin-top:40px;background:url(../i/bg-mob.png) no-repeat 0 -1249px} .mobile-width iframe{height:704px!important} .mobile-width-2{height:417px!important;margin:0 auto;padding:125px 25px 159px 25px;337px;margin-top:40px;background:url(../i/bg-mob.png) no-repeat 0 -2217px} .mobile-width-2 iframe{height:416px!important} .mobile-width-3{height:256px!important;margin:0 auto;padding:45px 115px 69px 105px;497px;margin-top:40px;background:url(../i/bg-mob.png) no-repeat -387px -2217px} .mobile-width-3 iframe{height:256px!important} #by{overflow-y:hidden}
yanhua3D.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>3D烟花</title>
<link rel="stylesheet" href="demo.css" />
</head>
<body>
<div id="yanhua3d" style=" 1000px;height: 600px;">
</div>
<script src="yanhuo3D.js" type="text/javascript"></script>
<script>
yanhua3D.create3Dyuanhua();
</script>
</body>
</html>
使用方法：
使用方法： 引入yanhuo3D.js工具和对应得样式文件yanhuo3D.css 在需要引用烟火得地方加入：<div id="yanhua3d" style=" 1000px;height: 600px;></div> 之后就能获得yanhua3D全局变量，通过它调用yanhua3D.create3Dyuanhua();用yanhua3d创建出烟火对象， 通过设置div大小从而调整了烟火得大小