HTML5實現圣誕樹效果

openkk 12年前發布 | 32K 次閱讀 HTML5 前端技術

下面的代碼只有在支持HTML5下的瀏覽器中運行！！

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" ";
<html>
<head>
<title>html5寫的3D逼真圣誕樹效果</title>
<meta charset="utf-8" >
<style>
html, body { width: 100%; height: 100%; margin: 0; padding: 0; border: 0; }
div { 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=iU,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.PI2,1)));else for(;x=T(i),y=Q()2-1,D=xx+yy,B=E(D-x/.9-1.5y+1),R=67(B+1)(L=k/9+.8)>>1,i++<W;)if(D<1)beginPath(strokeStyle=V+R+','+(R+BL>>0)+',40,.1)'),moveTo(U+x8,U+y8),lineTo(U+xU,U+yU),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/H20+((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(ii)+T(D5+ii)5)%W)>>0,((113i+(D*i)/60)%(290+i/99))>>0);}D+=.02},1)
// end of submission //
</script>
</body>
</html></pre>轉自：http://blog.csdn.net/harderxin/article/details/7314779</span></strong>
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