Buat Script logo animasi google bergoyang keren 2013

Script google ini sangat mempengaruhi loading blog, jadi soger harus mempertimbangkan dengan matang untuk memasang script logo ini karena script ini cukup berat dan membuat blog jadi lelet. Oh ya soger lupa! Logo google ini akan tampil keren dan saat mouse di letakkan/di dekatkan diatasnya maka logo google akan ikut bergoyang. Soger berikut demonya:

 

<script>



// animation globals

var t=0;

var frameInterval = 25; // in ms

var canvas = null; // canvas DOM object

var context = null; // canvas context



// ball globals

var ballRadius = 10;



// physics globals

var collisionDamper = 0.3;

var floorFriction = 0.0005 * frameInterval;

var mouseForceMultiplier = 1 * frameInterval;

var restoreForce =0.002 * frameInterval;



var mouseX = 99999;

var mouseY = 99999;



var balls = null;



function Ball(x,y,vx,vy,color) {

    this.x=x;

    this.y=y;

    this.vx=vx;

    this.vy=vy;

    this.color=color;



    this.origX = x;

    this.origY = y;

}



function init() {

    canvas=document.getElementById("myCanvas");

    context=canvas.getContext("2d");

    initStageObjects();

    setInterval(updateStage, frameInterval);

}



function updateStage() {

    t+=frameInterval;

    clearCanvas();

    updateStageObjects();

    drawStageObjects();

}



function initStageObjects() {

    balls = new Array();



    var blue = "#3A5BCD";

    var red="#EF2B36";

    var yellow = "#FFC636";

    var green="#02A817";



    // G

    balls.push(new Ball(173,63,0,0,blue));

    balls.push(new Ball(158,53,0,0,blue));

    balls.push(new Ball(143,52,0,0,blue));

    balls.push(new Ball(130,53,0,0,blue));

    balls.push(new Ball(117,58,0,0,blue));

    balls.push(new Ball(110,70,0,0,blue));

    balls.push(new Ball(102,82,0,0,blue));

    balls.push(new Ball(104,96,0,0,blue));

    balls.push(new Ball(105,107,0,0,blue));

    balls.push(new Ball(110,120,0,0,blue));

    balls.push(new Ball(124,130,0,0,blue));

    balls.push(new Ball(139,136,0,0,blue));

    balls.push(new Ball(152,136,0,0,blue));

    balls.push(new Ball(166,136,0,0,blue));

    balls.push(new Ball(174,127,0,0,blue));

    balls.push(new Ball(179,110,0,0,blue));

    balls.push(new Ball(166,109,0,0,blue));

    balls.push(new Ball(156,110,0,0,blue));



    // O

    balls.push(new Ball(210,81,0,0,red));

    balls.push(new Ball(197,91,0,0,red));

    balls.push(new Ball(196,103,0,0,red));

    balls.push(new Ball(200,116,0,0,red));

    balls.push(new Ball(209,127,0,0,red));

    balls.push(new Ball(223,130,0,0,red));

    balls.push(new Ball(237,127,0,0,red));

    balls.push(new Ball(244,114,0,0,red));

    balls.push(new Ball(242,98,0,0,red));

    balls.push(new Ball(237,86,0,0,red));

    balls.push(new Ball(225,81,0,0,red));



    // O

    var oOffset = 67;

    balls.push(new Ball(oOffset + 210,81,0,0,yellow));

    balls.push(new Ball(oOffset + 197,91,0,0,yellow));

    balls.push(new Ball(oOffset + 196,103,0,0,yellow));

    balls.push(new Ball(oOffset + 200,116,0,0,yellow));

    balls.push(new Ball(oOffset + 209,127,0,0,yellow));

    balls.push(new Ball(oOffset + 223,130,0,0,yellow));

    balls.push(new Ball(oOffset + 237,127,0,0,yellow));

    balls.push(new Ball(oOffset + 244,114,0,0,yellow));

    balls.push(new Ball(oOffset + 242,98,0,0,yellow));

    balls.push(new Ball(oOffset + 237,86,0,0,yellow));

    balls.push(new Ball(oOffset + 225,81,0,0,yellow));



    // G

    balls.push(new Ball(370,80,0,0,blue));

    balls.push(new Ball(358,79,0,0,blue));

    balls.push(new Ball(346,79,0,0,blue));

    balls.push(new Ball(335,84,0,0,blue));

    balls.push(new Ball(330,98,0,0,blue));

    balls.push(new Ball(334,111,0,0,blue));

    balls.push(new Ball(348,116,0,0,blue));

    balls.push(new Ball(362,109,0,0,blue));

    balls.push(new Ball(362,94,0,0,blue));

    balls.push(new Ball(355,128,0,0,blue));

    balls.push(new Ball(340,135,0,0,blue));

    balls.push(new Ball(327,142,0,0,blue));

    balls.push(new Ball(325,155,0,0,blue));

    balls.push(new Ball(339,165,0,0,blue));

    balls.push(new Ball(352,166,0,0,blue));

    balls.push(new Ball(367,161,0,0,blue));

    balls.push(new Ball(371,149,0,0,blue));

    balls.push(new Ball(366,137,0,0,blue));



    // L

    balls.push(new Ball(394,49,0,0,green));

    balls.push(new Ball(381,50,0,0,green));

    balls.push(new Ball(391,61,0,0,green));

    balls.push(new Ball(390,73,0,0,green));

    balls.push(new Ball(392,89,0,0,green));

    balls.push(new Ball(390,105,0,0,green));

    balls.push(new Ball(390,118,0,0,green));

    balls.push(new Ball(388,128,0,0,green));

    balls.push(new Ball(400,128,0,0,green));



    // E

    balls.push(new Ball(426,101,0,0,red));

    balls.push(new Ball(436,98,0,0,red));

    balls.push(new Ball(451,95,0,0,red));

    balls.push(new Ball(449,83,0,0,red));

    balls.push(new Ball(443,78,0,0,red));

    balls.push(new Ball(430,77,0,0,red));

    balls.push(new Ball(418,82,0,0,red));

    balls.push(new Ball(414,93,0,0,red));

    balls.push(new Ball(412,108,0,0,red));

    balls.push(new Ball(420,120,0,0,red));

    balls.push(new Ball(430,127,0,0,red));

    balls.push(new Ball(442,130,0,0,red));

    balls.push(new Ball(450,125,0,0,red));



}



function drawStageObjects() {

    for (var n=0; n<balls.length; n++) {

        context.beginPath();

        context.arc(balls[n].x,balls[n].y,ballRadius,

            0,2*Math.PI,false);

        context.fillStyle=balls[n].color;

        context.fill();

    }



}



function updateStageObjects() {



    for (var n=0; n<balls.length; n++) {



        // set ball position based on velocity

        balls[n].y+=balls[n].vy;

        balls[n].x+=balls[n].vx;



        // restore forces



        if (balls[n].x > balls[n].origX) {

            balls[n].vx -= restoreForce;

        }

        else {

            balls[n].vx += restoreForce;

        }

        if (balls[n].y > balls[n].origY) {

            balls[n].vy -= restoreForce;

        }

        else {

            balls[n].vy += restoreForce;

        }



        // mouse forces

        var distX = balls[n].x - mouseX;

        var distY = balls[n].y - mouseY;



        var radius = Math.sqrt(Math.pow(distX,2) +

            Math.pow(distY,2));



        var totalDist = Math.abs(distX) + Math.abs(distY);



        var forceX = (Math.abs(distX) / totalDist) *

            (1/radius) * mouseForceMultiplier;

        var forceY = (Math.abs(distY) / totalDist) *

            (1/radius) * mouseForceMultiplier;



        if (distX>0) { // mouse is left of ball

            balls[n].vx += forceX;

        }

        else {

            balls[n].vx -= forceX;

        }

        if (distY>0) { // mouse is on top of ball

            balls[n].vy += forceY;

        }

        else {

            balls[n].vy -= forceY;

        }



        // floor friction

        if (balls[n].vx>0) {

            balls[n].vx-=floorFriction;

        }

        else if (balls[n].vx<0) {

            balls[n].vx+=floorFriction;

        }

        if (balls[n].vy>0) {

            balls[n].vy-=floorFriction;

        }

        else if (balls[n].vy<0) {

            balls[n].vy+=floorFriction;

        }



        // floor condition

        if (balls[n].y > (canvas.height-ballRadius)) {

            balls[n].y=canvas.height-ballRadius-2;

            balls[n].vy*=-1;

            balls[n].vy*=(1-collisionDamper);

        }



        // ceiling condition

        if (balls[n].y < (ballRadius)) {

            balls[n].y=ballRadius+2;

            balls[n].vy*=-1;

            balls[n].vy*=(1-collisionDamper);

        }



        // right wall condition

        if (balls[n].x > (canvas.width-ballRadius)) {

            balls[n].x=canvas.width-ballRadius-2;

            balls[n].vx*=-1;

            balls[n].vx*=(1-collisionDamper);

        }



        // left wall condition

        if (balls[n].x < (ballRadius)) {

            balls[n].x=ballRadius+2;

            balls[n].vx*=-1;

            balls[n].vx*=(1-collisionDamper);

        }

    }

}



function clearCanvas() {

    context.clearRect(0,0,canvas.width, canvas.height);

}



function handleMouseMove(evt) {

    mouseX = evt.clientX - canvas.offsetLeft;

    mouseY = evt.clientY - canvas.offsetTop;

}



function handleMouseOut() {

    mouseX = 99999;

    mouseY = 99999;

}



</script>



<body onload="init()"  >

    <canvas id="myCanvas" width="578" height="200"

        onmousemove="handleMouseMove(event)"

        onmouseout="handleMouseOut()"



    ></canvas>