分享用HTML5来实现一个3D逼真的圣诞树
发布时间：2020-07-24 编辑：jiaochengji.com
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下面的代码只有在支持HTML5下的浏览器中运行！！html5写的3D逼真圣诞树效果
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "/TR/html4/frameset.dtd">
<html>
<head>
<title>html5写的3D逼真圣诞树效果</title>
<meta charset="utf-8" >
<style>
html, body { width: 100%; height: 100%; margin: 0; padding: 0; border: 0; }
p { margin: 0; padding: 0; border: 0; }
.nav {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 27px;
background-color: white;
color: black;
text-align: center;
line-height: 25px;
}
a { color: black; text-decoration: none; border-bottom: 1px dashed black; }
a:hover { border-bottom: 1px solid red; }
.previous { float: left; margin-left: 10px; }
.next { float: right; margin-right: 10px; }
.green { color: green; }
.red { color: red; }
textarea { width: 100%; height: 100%; border: 0; padding: 0; margin: 0; padding-bottom: 20px; }
.block-outer { float: left; width: 22%; height: 100%; padding: 5px; border-left: 1px solid black; margin: 30px 3px 3px 3px; }
.block-inner { height: 68%; }
.one { border: 0; }
</style>
</head>
<body marginwidth="0" marginheight="0">
<canvas id="c" height="356" width="446">
<script>
var collapsed = true;
function toggle() {
var fs = top.document.getElementsByTagName('frameset')[0];
var f = fs.getElementsByTagName('frame');
if (collapsed) {
fs.rows = '250px,*';
// enable resizing of frames in firefox/opera
fs.noResize = false;
f[0].noResize = false;
f[1].noResize = false;
} else {
fs.rows = '30px,*';
// disable resizing of frames in firefox/opera
fs.noResize = true;
f[0].noResize = true;
f[1].noResize = true;
}
collapsed = !collapsed;
}
</script>
<script>
var b = document.body;
var c = document.getElementsByTagName('canvas')[0];
var a = c.getContext('2d');
document.body.clientWidth; // fix bug in chrome.
</script>
<script>
// start of submission //
M=Math;Q=M.random;J=[];U=16;T=M.sin;E=M.sqrt;for(O=k=0;x=z=j=i=k<200;)with(M[k]=k?c.cloneNode(0):c){width=height=k?32:W=446;with(getContext('2d'))if(k>10|!k)for(font='60px Impact',V='rgba(';I=i*U,fillStyle=k?k==13?V '205,205,215,.15)':V (147 I) ',' (k%2?128 I:0) ',' I ',.5)':'#cca',i<7;)beginPath(fill(arc(U-i/3,24-i/2,k==13?4-(i )/2:8-i ,0,M.PI*2,1)));else for(;x=T(i),y=Q()*2-1,D=x*x y*y,B=E(D-x/.9-1.5*y 1),R=67*(B 1)*(L=k/9 .8)>>1,i <W;)if(D<1)beginPath(strokeStyle=V R ',' (R B*L>>0) ',40,.1)'),moveTo(U x*8,U y*8),lineTo(U x*U,U y*U),stroke();for(y=H=k E(k )*25,R=Q()*W;P=3,j<H;)J[O ]=[x =T(R)*P Q()*6-3,y =Q()*U-8,z =T(R-11)*P Q()*6-3,j/H*20 ((j =U)>H&Q()>.8?Q(P=9)*4:0)>>1]}setInterval(function G(m,l){A=T(D-11);if(l)return(m[2]-l[2])*A (l[0]-m[0])*T(D);a.clearRect(0,0,W,W);J.sort(G);for(i=0;L=J[i ];a.drawImage(M[L[3] 1],207 L[0]*A L[2]*T(D)>>0,L[1]>>1)){if(i==2e3)a.fillText('Merry Christmas!',U,345);if(!(i%7))a.drawImage(M[13],((157*(i*i) T(D*5 i*i)*5)%W)>>0,((113*i (D*i)/60)%(290 i/99))>>0);}D =.02},1)
// end of submission //
</script>
</body>
</html>以上就是分享用HTML5来实现一个3D逼真的圣诞树的详细内容，更多请关注教程集其它相关文章！
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