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GreenSock
- DrawSVGPlugin allows you to progressively reveal (or hide) the stroke of an SVG <path>, <line>, <polyline>, <polygon>, <rect>, or <ellipse> and you can even animate outward from the center of the stroke (or any position/segment). It does this by controlling the stroke-dashoffset and stroke-dasharray CSS properties.

Code

<svg version="1.1" id="loader" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" style="background:#a10000;" width="100%" height="50%" viewBox="0 -45 400 250" xml:space="preserve">
    <path id="path1" style="fill:none;stroke:#000000;stroke-miterlimit:10;"d="M200.198,34.273c-15.919,0-30.338,6.227-41.5,16.227H187.5v17H180
    h-35.196c-3.067,5-5.355,11-6.711,17H187.5v18h-50.736c0.279,4,1.152,10,2.551,15H200h60.646c1.399-5,2.272-10,2.551-15H209.5v-18
    h52.368c-1.356-6-3.643-12-6.711-17h-35.196H209.5v-17h31.764c-11.163-10-25.562-15.977-41.481-15.977"/>
    <path id="path2" style="fill:none;stroke:#000000;stroke-miterlimit:10;" d="M209.5,160.134c18-2.905,33.225-12.634,42.771-26.634H208h-13
    h-48.63c9.419,14,24.13,23.463,41.13,26.515v14.44c-38-5.712-67.083-38.587-67.083-78.288c0-43.723,35.569-79.167,79.292-79.167
    s78.979,35.444,78.979,79.167c0,40.278-30.188,73.53-69.188,78.52V160.134z"/>
</svg>

DrawSVG
- DrawSVGPlugin.min.js
- TweenMax.min.js

(function(){
    var container = document.getElementById('container');
    var loader = document.getElementById('loader');
    var path1 = document.getElementById('path1');
    var path2 = document.getElementById('path2');

    var t = new TimelineMax({
        repeat: -1,                // -1: indefinite, n: n+1 if n>=0
        yoyo: false                // false: A-B-A-B, true: A-B-B-A
    });

    t.timeScale(1.2);                // speed
    t.set([path1, path2], {
        drawSVG: '0% 0%'
    }, '-=2');                    // previous 2/speed (s)

    t.to([path1, path2], 3, {            // 3/speed (s)
        drawSVG: '0% 100%'            // 'start, length'
    });

    t.to([path1, path2], 3, {
        drawSVG: '0% 0%'
    }, '+=2');                    // delay 2/speed (s)

})();

Alpha [Example]
- TweenMax.min.js

(function(){
    var container = document.getElementById('container');
    var loader = document.getElementById('loader');
    var path1 = document.getElementById('path1');
    var path2 = document.getElementById('path2');

    var t = new TweenlineMax({
        repeat: -1,
        yoyo: true
    });

    t.timeScale(5);
    t.set([path1, path2], {
        alpha: 0.0,                    // alpha
        ease: Power1.easeInOut
    }, '-=2');

    t.to([path1, path2], 3, {
        alpha: 0.8,
        ease: Power1.easeInOut
    });

    t.to([path1, path2], 3, {
        alpha: 1.0,
        ease: Power1.easeInOut
    }, '+=2');
})();

Scale [Example]

(function(){
    var container = document.getElementById('container');
    var loader = document.getElementById('loader');
    var outer = document.getElementById('outer');

    var t = new TimelineMax({
        repeat: -1,
        yoyo: false
    });

    t.timeScale(5);
    t.set(outer, {
        scale: 1.0,
        transformOrigin: '50% 50%',
        ease: Power1.easeInOut
    }, '-=2');

    t.to(outer, 3, {
        scale: 1.1,                // scale
        transformOrigin: '50% 50%',        // the centeral point
        ease: Power1.easeInOut
    });

    t.to(outer, 3, {
        scale: 1.0,
        transformOrigin: '50% 50%',
        ease: Power1.easeInOut
    }, '+=2');        
})();

Rotation and Move [Example]

(function(){
    var rectangle = document.getElementById('rectangle');

    var t = new TimelineMax({
        repeat: -1,
        yoyo: true
    });

    t.timeScale(2);

    var width = rectangle.width;
    var num = 1;

    t.set(rectangle, {
        transformOrigin: '100% 100%',
    });

    t.to(rectangle, 3, {
        rotation: '+=90',
        ease: Power1.easeInOut
    });

    t.set(rectangle, {
        transformOrigin: '100% 100%',
        x: '+=100',            // move
        rotation: 0
    });

    t.to(rectangle, 3, {
        rotation: '+=90',        // rotation
        ease: Power1.easeInOut
    });

    t.to(rectangle, 2, {
                        // delay for 2/speed (s)
    });    
})();

Rain [Example]

var loader = document.getElementById('loader');
var circle = document.getElementById('circle');
var rectangle = document.getElementById('rectangle');
var rain = document.getElementById('rain');
var ra = [rain];
var re = [rectangle];
var ci = [circle];

var play = function(circle, rectangle, rain){    
    var t = new TimelineMax({
        repeat: -1,
        yoyo: false
    });

    t.timeScale(2.5);


    t.set(rain, {
        x: Math.floor(Math.random() * 300),
        y: Math.floor(Math.random() * 120)
    });

    t.set(circle, {
        attr: {
            rx: 0,
            ry: 0
        }
    });

    t.set(rectangle, {
        attr: {
            height: 0
        }
    });

    t.set([rectangle, circle], {
        y: 0
    });

    t.to(circle, Math.random() * 3,{

    });

    t.to(rectangle, 1, {
        attr: {
            height: '+=20'
        },
        y: '+=50',
        alpha: 0
    });

    r_x = Math.floor(Math.random() * 5) + 10;

    t.to(circle, 1.5, {
        attr: {
            rx: '+=' + r_x,
            ry: '+=' + r_x/3
        },
        alpha: 0,
        ease: Power1.easeInOut
    }, '-=0.3');

    t.to([circle, rectangle], 5, {

        });

};

var add = function(num){
    play(ci[0], re[0], ra[0]);
    for(i = 1; i < num; i++)
    {
        ra[num] = rain.cloneNode();
        re[num] = rectangle.cloneNode();
        ci[num] = circle.cloneNode();
        ra[num].appendChild(re[num]);
        ra[num].appendChild(ci[num]);
        loader.appendChild(ra[num]);
        play(ci[num], re[num], ra[num]);
    }
};

add(80);

Leaves [Example]

// near
var leave = document.getElementById('leave');
var leave_child = document.getElementById('leave_child');
var container = document.getElementById('container');
var le = [leave];
var lc = [leave_child];

var animation = function(leave, leave_child){

    var t = new TimelineMax({
        repeat: -1,
        yoyo: false
    });

    t.timeScale(1);

    var time = 10 + Math.random() * 15;
    var height = 100 + Math.floor(Math.random() * 800);
    var distance = 1800 + Math.random() * 500;
    var rota = 300 + Math.random() * 700;
    var sc = 2 + Math.random() * 2;

    t.set(leave, {
        top: -100 + Math.random() * 250,
        left: -200,
        alpha: 0.9 + Math.random()
    });

    t.set(leave_child, {
        rotation: Math.random() * 360
    });

    t.to([leave,leave_child], Math.random()* 4, {

    });

    t.to(leave_child, time, {
        transformOrigin: '50% 50%',
        rotation: '+=' + rota,
    }, '-=' + time);

    t.to([leave, leave_child], time, {
        top: '+=' + height,
        left: '+=' + distance,
        scale: sc,

        ease: Power1.easeInOut
    }, '-=' + time);

    t.to([leave,leave_child], Math.random()* 4, {

    });
};

var add = function(num){
    for(i = 1; i < num; i++)
    {
        le[i] = leave.cloneNode();
        var pre = Math.random() * 360;
        var next = pre + 360;
        le[i].innerHTML = "<style>#leave_" + i +"{-webkit-transform-origin:center;-webkit-transform: rotateY("+ pre + "deg);-webkit-animation: rotate_Y "+ (Math.random() + 3) +"s;-webkit-animation-iteration-count:infinite;}@-webkit-keyframes rotate_Y{from {-webkit-transform: rotateY("+ pre + "deg);}to {-webkit-transform: rotateY("+ next + "deg);}}</style>";
        le[i].id = "leave_" + i;
        lc[i] = leave_child.cloneNode();
        le[i].appendChild(lc[i]);
        container.appendChild(le[i]);
        animation(le[i], lc[i]);
    }
};

add(3);

// middle
var leave = document.getElementById('leave');
var leave_child = document.getElementById('leave_child');
var container = document.getElementById('container');
leave.innerHTML = "<style>#leave{-webkit-transform-origin:center;-webkit-animation: rotate_Y 2s;-webkit-animation-iteration-count:infinite;}@-webkit-keyframes rotate_Y{from {-webkit-transform: rotateY(0deg);}to {-webkit-transform: rotateY(360deg);}}</style>";
var le = [leave];
var lc = [leave_child];

var animation = function(leave, leave_child){

    var t = new TimelineMax({
        repeat: -1,
        yoyo: false
    });

    t.timeScale(1);

    var time = 10 + Math.random() * 15;
    var height = 100 + Math.floor(Math.random() * 800);
    var distance = 1800 + Math.random() * 500;
    var rota = 300 + Math.random() * 700;
    var sc = 0.3 + Math.random() * 1.5;

    t.set(leave, {
        top: -100 + Math.random() * 250,
        left: -200,
        alpha: 0.8 + Math.random()
    });

    t.set(leave_child, {
        rotation: Math.random() * 360
    });

    t.to([leave,leave_child], Math.random()* 4, {

    });

    t.to(leave_child, time, {
        transformOrigin: '50% 50%',
        rotation: '+=' + rota,
    }, '-=' + time);

    t.to([leave, leave_child], time, {
        top: '+=' + height,
        left: '+=' + distance,
        scale: sc,

        ease: Power1.easeInOut
    }, '-=' + time);

    t.to([leave,leave_child], Math.random()* 4, {

    });
};

var add = function(num){
    animation(le[0], lc[0]);
    for(i = 1; i < num; i++)
    {
        le[i] = leave.cloneNode();
        var pre = Math.random() * 360;
        var next = pre + 360;
        le[i].innerHTML = "<style>#leave_" + i +"{-webkit-transform-origin:center;-webkit-transform: rotateY("+ pre + "deg);-webkit-animation: rotate_Y "+ (Math.random() + 3) +"s;-webkit-animation-iteration-count:infinite;}@-webkit-keyframes rotate_Y{from {-webkit-transform: rotateY("+ pre + "deg);}to {-webkit-transform: rotateY("+ next + "deg);}}</style>";
        le[i].id = "leave_" + i;
        lc[i] = leave_child.cloneNode();
        le[i].appendChild(lc[i]);
        container.appendChild(le[i]);
        animation(le[i], lc[i]);
    }
};

add(20);

// far
var remote_leave = document.getElementById('remote_leave');
var remote_leave_child = document.getElementById('remote_leave_child');
var container = document.getElementById('container');
remote_leave.innerHTML = "<style>#remote_leave{-webkit-transform-origin:center;-webkit-animation: rotate_Y 2s;-webkit-animation-iteration-count:infinite;}@-webkit-keyframes rotate_Y{from {-webkit-transform: rotateY(0deg);}to {-webkit-transform: rotateY(360deg);}}</style>";
var le = [remote_leave];
var lc = [remote_leave_child];

var animation = function(remote_leave, remote_leave_child){

    var t = new TimelineMax({
        repeat: -1,
        yoyo: false
    });

    t.timeScale(1);

    var time = 10 + Math.random() * 15;
    var height = 100 - Math.floor(Math.random() * 800);
    var distance = 1800 + Math.random() * 500;
    var rota = 300 + Math.random() * 700;
    var sc = 1.2 - Math.random();

    t.set(remote_leave, {
        top: 100 + Math.random() * 100,
        left: 180,
        alpha: 0.7 + Math.random()
    });

    t.set(remote_leave_child, {
        rotation: Math.random() * 360
    });

    t.to([remote_leave,remote_leave_child], Math.random()* 4, {

    });

    t.to(remote_leave_child, time, {
        transformOrigin: '50% 50%',
        rotation: '+=' + rota,
    }, '-=' + time);

    t.to([remote_leave, remote_leave_child], time, {
        top: '+=' + height,
        left: '+=' + distance,
        scale: sc,

        ease: Power1.easeInOut
    }, '-=' + time);

    t.to([remote_leave,remote_leave_child], Math.random()* 4, {

    });
};

var add = function(num){
    animation(le[0], lc[0]);
    for(i = 1; i < num; i++)
    {
        le[i] = remote_leave.cloneNode();
        var pre = Math.random() * 360;
        var next = pre + 360;
        le[i].innerHTML = "<style>#remote_leave_" + i +"{-webkit-transform-origin:center;-webkit-transform: rotateY("+ pre + "deg);-webkit-animation: rotate_Y "+ (Math.random() + 3) +"s;-webkit-animation-iteration-count:infinite;}@-webkit-keyframes rotate_Y{from {-webkit-transform: rotateY("+ pre + "deg);}to {-webkit-transform: rotateY("+ next + "deg);}}</style>";
        le[i].id = "remote_leave_" + i;
        lc[i] = remote_leave_child.cloneNode();
        le[i].appendChild(lc[i]);
        container.appendChild(le[i]);
        animation(le[i], lc[i]);
    }
};

add(15);

Download

DrawSVGPlugin
- Just Click here to download.

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