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Copy pathtest.js
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158 lines (137 loc) · 5.08 KB
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var stage, textStage, form, input;
var circles, textPixels, textFormed;
var offsetX, offsetY, text;
var colors = ['#B2949D', '#FFF578', '#FF5F8D', '#37A9CC', '#188EB2'];
function init() {
initStages();
initForm();
initText();
initCircles();
animate();
addListeners();
}
// Init Canvas
function initStages() {
offsetX = (window.innerWidth-600)/2;
offsetY = (window.innerHeight-600)/2;
textStage = new createjs.Stage("text");
textStage.canvas.width = 1800;
textStage.canvas.height = 300;
stage = new createjs.Stage("stage");
stage.canvas.width = window.innerWidth;
stage.canvas.height = window.innerHeight;
}
function initForm() {
form = document.getElementById('form');
form.style.top = offsetY+200+'px';
form.style.left = offsetX+'px';
input = document.getElementById('inputText');
}
function initText() {
text = new createjs.Text("t", "80px 'Source Sans Pro'", "#eee");
text.textAlign = 'center';
text.x = 300;
}
function initCircles() {
circles = [];
for(var i=0; i<600; i++) {
var circle = new createjs.Shape();
var r = 7;
var x = window.innerWidth*Math.random();
var y = window.innerHeight*Math.random();
var color = colors[Math.floor(i%colors.length)];
var alpha = 0.2 + Math.random()*0.5;
circle.alpha = alpha;
circle.radius = r;
circle.graphics.beginFill(color).drawCircle(0, 0, r);
circle.x = x;
circle.y = y;
circles.push(circle);
stage.addChild(circle);
circle.movement = 'float';
tweenCircle(circle);
}
}
// animating circles
function animate() {
stage.update();
requestAnimationFrame(animate);
}
function tweenCircle(c, dir) {
if(c.tween) c.tween.kill();
if(dir == 'in') {
c.tween = TweenLite.to(c, 0.4, {x: c.originX, y: c.originY, ease:Quad.easeInOut, alpha: 1, radius: 5, scaleX: 0.4, scaleY: 0.4, onComplete: function() {
c.movement = 'jiggle';
tweenCircle(c);
}});
} else if(dir == 'out') {
c.tween = TweenLite.to(c, 0.8, {x: window.innerWidth*Math.random(), y: window.innerHeight*Math.random(), ease:Quad.easeInOut, alpha: 0.2 + Math.random()*0.5, scaleX: 1, scaleY: 1, onComplete: function() {
c.movement = 'float';
tweenCircle(c);
}});
} else {
if(c.movement == 'float') {
c.tween = TweenLite.to(c, 5 + Math.random()*3.5, {x: c.x + -100+Math.random()*200, y: c.y + -100+Math.random()*200, ease:Quad.easeInOut, alpha: 0.2 + Math.random()*0.5,
onComplete: function() {
tweenCircle(c);
}});
} else {
c.tween = TweenLite.to(c, 0.05, {x: c.originX + Math.random()*3, y: c.originY + Math.random()*3, ease:Quad.easeInOut,
onComplete: function() {
tweenCircle(c);
}});
}
}
}
function formText() {
for(var i= 0, l=textPixels.length; i<l; i++) {
circles[i].originX = offsetX + textPixels[i].x;
circles[i].originY = offsetY + textPixels[i].y;
tweenCircle(circles[i], 'in');
}
textFormed = true;
if(textPixels.length < circles.length) {
for(var j = textPixels.length; j<circles.length; j++) {
circles[j].tween = TweenLite.to(circles[j], 0.4, {alpha: 0.1});
}
}
}
function explode() {
for(var i= 0, l=textPixels.length; i<l; i++) {
tweenCircle(circles[i], 'out');
}
if(textPixels.length < circles.length) {
for(var j = textPixels.length; j<circles.length; j++) {
circles[j].tween = TweenLite.to(circles[j], 0.4, {alpha: 1});
}
}
}
// event handlers
function addListeners() {
form.addEventListener('submit', function(e) {
e.preventDefault();
createText("Searching".toUpperCase());
});
}
function createText(t) {
var fontSize = 100;
text.text = t;
text.font = "900 "+fontSize+"px 'Source Sans Pro'";
text.textAlign = 'center';
text.x = 300;
text.y = (172-fontSize)/2;
textStage.addChild(text);
textStage.update();
var ctx = document.getElementById('text').getContext('2d');
var pix = ctx.getImageData(0,0,1000,300).data;
textPixels = [];
for (var i = pix.length; i >= 0; i -= 4) {
if (pix[i] != 0) {
var x = (i / 4) % 600;
var y = Math.floor(Math.floor(i/600)/4);
if((x && x%8 == 0) && (y && y%8 == 0)) textPixels.push({x: x, y: y});
}
}
formText();
}
window.onload = function() { init() };