Tuesday, September 18, 2012

Cara Membuat Teks Bergerak Mengikuti Arah Kursor | Text Trail


Kali ini akan kita bahas mengenai cara membuat teks mengikuti arah kursor, menanggapi sebuah komentar dari salah seorang teman di blog ini, berikut cuplikannya:


1. Login akun Blogger
2. Masuk menu Rancangan
3. Pilih Eleman Laman kemudian tambahkan gadget
4. Pilih HTML/JavaScript
5. Masukkan kode script di bawah ini

<style type="text/css">
    /* Circle Text Styles */
    #outerCircleText {
    /* Optional - DO NOT SET FONT-SIZE HERE, SET IT IN THE SCRIPT */
    font-style: italic;
    font-weight: bold;
    font-family: 'comic sans ms';
    color: #000000;
    /* End Optional */


    /* Start Required - Do Not Edit */
    position: absolute;top: 0;left: 0;z-index: 3000;cursor: default;}
    #outerCircleText div {position: relative;}
    #outerCircleText div div {position: absolute;top: 0;left: 0;text-align: center;}
    /* End Required */
    /* End Circle Text Styles */
    </style>


    <script type="text/javascript">
    /* Circling text trail- Tim Tilton
    Website: http://www.tempermedia.com/
    Visit: http://www.dynamicdrive.com/ for Original Source and tons of scripts
    Modified Here for more flexibility and modern browser support
    Modifications as first seen in http://www.dynamicdrive.com/forums/
    username:jscheuer1 - This notice must remain for legal use
    */


    ;(function(){


    // Your message here (QUOTED STRING)
    var msg = "Tutorial Blog";


    /* THE REST OF THE EDITABLE VALUES BELOW ARE ALL UNQUOTED NUMBERS */


    // Set font's style size for calculating dimensions
    // Set to number of desired pixels font size (decimal and negative numbers not allowed)
    var size = 24;


    // Set both to 1 for plain circle, set one of them to 2 for oval
    // Other numbers & decimals can have interesting effects, keep these low (0 to 3)
    var circleY = 0.75; var circleX = 2;


    // The larger this divisor, the smaller the spaces between letters
    // (decimals allowed, not negative numbers)
    var letter_spacing = 5;


    // The larger this multiplier, the bigger the circle/oval
    // (decimals allowed, not negative numbers, some rounding is applied)
    var diameter = 10;


    // Rotation speed, set it negative if you want it to spin clockwise (decimals allowed)
    var rotation = 0.4;


    // This is not the rotation speed, its the reaction speed, keep low!
    // Set this to 1 or a decimal less than one (decimals allowed, not negative numbers)
    var speed = 0.3;


    ////////////////////// Stop Editing //////////////////////


    if (!window.addEventListener && !window.attachEvent || !document.createElement) return;


    msg = msg.split('');
    var n = msg.length - 1, a = Math.round(size * diameter * 0.208333), currStep = 20,
    ymouse = a * circleY + 20, xmouse = a * circleX + 20, y = [], x = [], Y = [], X = [],
    o = document.createElement('div'), oi = document.createElement('div'),
    b = document.compatMode && document.compatMode != "BackCompat"? document.documentElement : document.body,


    mouse = function(e){
    e = e || window.event;
    ymouse = !isNaN(e.pageY)? e.pageY : e.clientY; // y-position
    xmouse = !isNaN(e.pageX)? e.pageX : e.clientX; // x-position
    },


    makecircle = function(){ // rotation/positioning
    if(init.nopy){
    o.style.top = (b || document.body).scrollTop + 'px';
    o.style.left = (b || document.body).scrollLeft + 'px';
    };
    currStep -= rotation;
    for (var d, i = n; i > -1; --i){ // makes the circle
    d = document.getElementById('iemsg' + i).style;
    d.top = Math.round(y[i] + a * Math.sin((currStep + i) / letter_spacing) * circleY - 15) + 'px';
    d.left = Math.round(x[i] + a * Math.cos((currStep + i) / letter_spacing) * circleX) + 'px';
    };
    },


    drag = function(){ // makes the resistance
    y[0] = Y[0] += (ymouse - Y[0]) * speed;
    x[0] = X[0] += (xmouse - 20 - X[0]) * speed;
    for (var i = n; i > 0; --i){
    y[i] = Y[i] += (y[i-1] - Y[i]) * speed;
    x[i] = X[i] += (x[i-1] - X[i]) * speed;
    };
    makecircle();
    },


    init = function(){ // appends message divs, & sets initial values for positioning arrays
    if(!isNaN(window.pageYOffset)){
    ymouse += window.pageYOffset;
    xmouse += window.pageXOffset;
    } else init.nopy = true;
    for (var d, i = n; i > -1; --i){
    d = document.createElement('div'); d.id = 'iemsg' + i;
    d.style.height = d.style.width = a + 'px';
    d.appendChild(document.createTextNode(msg[i]));
    oi.appendChild(d); y[i] = x[i] = Y[i] = X[i] = 0;
    };
    o.appendChild(oi); document.body.appendChild(o);
    setInterval(drag, 25);
    },


    ascroll = function(){
    ymouse += window.pageYOffset;
    xmouse += window.pageXOffset;
    window.removeEventListener('scroll', ascroll, false);
    };


    o.id = 'outerCircleText'; o.style.fontSize = size + 'px';


    if (window.addEventListener){
    window.addEventListener('load', init, false);
    document.addEventListener('mouseover', mouse, false);
    document.addEventListener('mousemove', mouse, false);
    if (/Apple/.test(navigator.vendor))
    window.addEventListener('scroll', ascroll, false);
    }
    else if (window.attachEvent){
    window.attachEvent('onload', init);
    document.attachEvent('onmousemove', mouse);
    };


    })();
    </script>


6. Simpan
Selesai, sekarang kursor akan diikuti dengan teks,

Catatan :
* Yang berwarna merah, berturut-turut adalah kode warna dan teks yang diinginkan
** Yang berwarna kuning ukuran huruf, jarak spasi, besar lingkaran yang dibentuk, kecepatan berputar, dan kecepatan mengikuti gerak mouse

Sumber referensi :  tersesat dalam kabut?

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