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JS keyword Spherical rotation effect of the example code _javascript tips

Source: Internet
Author: User
Tags abs cos rand sin
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Sometimes the internet to look up information, see other People's blog has the effect of the rotation of the key words, feel pretty good. So the Internet search for its implementation, well, write their own hands.

Html:

Copy Code code as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>
<title></title>
<link rel= "stylesheet" href= "Css/style.css"/>
<script type= "Text/javascript" src= "Js/lrtk.js" ></script>
<body>
<!--code starts-->
<div id= "Div1" >
<a >asp.net webform</a>
<a >asp.net mvc</a>
<a >EF</a>
<a >Castle</a>
<a >Spring.net</a>
<a >NHibernate</a>
<a >WCF</a>
<a >WPF</a>
<a >AOP</a>
<a >IoC</a>
<a >SQL</a>
<a >Javascript</a>
<a >Jquery</a>
<a >KendoUI</a>
</div>
</body>

Css:
Copy Code code as follows:

#div1 {height:400px;width:450px; position:relative; margin:10px Auto;}
#div1 a{position:absolute;top:0px;left:0px;font-weight:bold;padding:3px 6px; color:black; text-decoration:none;}
#div1 a:hover{border:1px solid #eee; background: #ccc; border-radius:5px;}

Since it's a keyword, I think it's cool to add a different color to them. Initializes an array to hold the color values, which are then randomly assigned to each label.
Copy Code code as follows:

var colors = ["#FF60AF", "#9F35FF", "#FF2D2D", "#6C6C6C", "#003D79", "#00AEAE", "#019858"];
var rand = Math.ceil (Math.random () *6);
Aa[i].style.color=colors[rand];

Js:
Copy Code code as follows:

var radius = 100;
var DTR = math.pi/180;
var d=300;

var mclist = [];
var active = false;
var lasta = 1;
var lastb = 1;
var distr = true;
var tspeed=2;
var size=250;

var mousex=0;
var mousey=0;

var howelliptical=1;

var aa=null;
var odiv=null;

Window.onload=function ()
{
var i=0;
var otag=null;

Odiv=document.getelementbyid (' Div1 ');

Aa=odiv.getelementsbytagname (' a ');

for (i=0;i<aa.length;i++)
{

var colors = ["#FF60AF", "#9F35FF", "#FF2D2D", "#6C6C6C", "#003D79", "#00AEAE", "#019858"];
var rand = Math.ceil (Math.random () *6);
Aa[i].style.color=colors[rand];

otag={};

Otag.offsetwidth=aa[i].offsetwidth;
Otag.offsetheight=aa[i].offsetheight;

Mclist.push (Otag);
}

Sinecosine (0,0,0);

Positionall ();

Odiv.onmouseover=function ()
{
Active=true;
};

Odiv.onmouseout=function ()
{
Active=false;
};

Odiv.onmousemove=function (EV)
{
var Oevent=window.event | | Ev

mousex=oevent.clientx-(ODIV.OFFSETLEFT+ODIV.OFFSETWIDTH/2);
mousey=oevent.clienty-(ODIV.OFFSETTOP+ODIV.OFFSETHEIGHT/2);

mousex/=5;
mousey/=5;
};

SetInterval (update, 10);
};

function Update ()
{
var A;
var b;

if (active)
{
A = (-math.min (Math.max (-mousey,-size), size)/radius) * tspeed;
b = (Math.min (Math.max (-mousex,-size), size)/radius) * tspeed;
}
Else
{
A = Lasta * 0.98;
b = Lastb * 0.98;
}

Lasta=a;
Lastb=b;

if (Math.Abs (a) <=0.01 && Math.Abs (b) <=0.01)
{
Return
}

var c=0;
Sinecosine (A,B,C);
for (Var j=0;j<mclist.length;j++)
{
var rx1=mclist[j].cx;
var ry1=mclist[j].cy*ca+mclist[j].cz* (-SA);
var Rz1=mclist[j].cy*sa+mclist[j].cz*ca;

var rx2=rx1*cb+rz1*sb;
var ry2=ry1;
var rz2=rx1* (-SB) +RZ1*CB;

var rx3=rx2*cc+ry2* (-SC);
var ry3=rx2*sc+ry2*cc;
var rz3=rz2;

MCLIST[J].CX=RX3;
Mclist[j].cy=ry3;
mclist[j].cz=rz3;

Per=d/(D+RZ3);

mclist[j].x= (Howelliptical*rx3*per)-(howelliptical*2);
Mclist[j].y=ry3*per;
Mclist[j].scale=per;
Mclist[j].alpha=per;

Mclist[j].alpha= (mclist[j].alpha-0.6) * (10/6);
}

Doposition ();
Depthsort ();
}

function Depthsort ()
{
var i=0;
var atmp=[];

for (i=0;i<aa.length;i++)
{
Atmp.push (Aa[i]);
}

Atmp.sort
(
function (VItem1, VITEM2)
{
if (vitem1.cz>vitem2.cz)
{
return-1;
}
else if (vitem1.cz<vitem2.cz)
{
return 1;
}
Else
{
return 0;
}
}
);

for (i=0;i<atmp.length;i++)
{
Atmp[i].style.zindex=i;
}
}

function Positionall ()
{
var phi=0;
var theta=0;
var max=mclist.length;
var i=0;

var atmp=[];
var ofragment=document.createdocumentfragment ();

Random sort
for (i=0;i<aa.length;i++)
{
Atmp.push (Aa[i]);
}

Atmp.sort
(
function ()
{
Return Math.random () <0.5?1:-1;
}
);

for (i=0;i<atmp.length;i++)
{
Ofragment.appendchild (Atmp[i]);
}

Odiv.appendchild (ofragment);

for (var i=1; i<max+1; i++) {
if (DISTR)
{
Phi = Math.acos ( -1+ (2*i-1)/max);
theta = math.sqrt (Max*math.pi) *phi;
}
Else
{
Phi = Math.random () * (MATH.PI);
theta = Math.random () * (2*MATH.PI);
}
Coordinate transformation
mclist[i-1].cx = radius * Math.Cos (theta) *math.sin (PHI);
mclist[i-1].cy = radius * Math.sin (theta) *math.sin (PHI);
mclist[i-1].cz = Radius * Math.Cos (PHI);

aa[i-1].style.left=mclist[i-1].cx+odiv.offsetwidth/2-mclist[i-1].offsetwidth/2+ ' px ';
aa[i-1].style.top=mclist[i-1].cy+odiv.offsetheight/2-mclist[i-1].offsetheight/2+ ' px ';
}
}

function Doposition ()
{
var l=odiv.offsetwidth/2;
var t=odiv.offsetheight/2;
for (Var i=0;i<mclist.length;i++)
{
aa[i].style.left=mclist[i].cx+l-mclist[i].offsetwidth/2+ ' px ';
aa[i].style.top=mclist[i].cy+t-mclist[i].offsetheight/2+ ' px ';

Aa[i].style.fontsize=math.ceil (12*MCLIST[I].SCALE/2) +8+ ' px ';

Aa[i].style.filter= "Alpha (opacity=" +100*mclist[i].alpha+ ")";
Aa[i].style.opacity=mclist[i].alpha;
}
}

function Sinecosine (A, B, c)
{
SA = Math.sin (A * DTR);
CA = Math.Cos (A * DTR);
SB = Math.sin (b * DTR);
CB = Math.Cos (b * DTR);
sc = Math.sin (c * DTR);
CC = Math.Cos (c * DTR);
}


Finally look at the effect:

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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