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2-twodimensions.html
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2-twodimensions.html
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Wobble Drag</title>
<link rel="stylesheet" href="../../assets/template.css" type="text/css" />
<script src="../../assets/template.min.js"></script>
</head>
<body class="template">
<canvas id="canvas" width="800" height="600"></canvas>
<script src="https://code.createjs.com/createjs-2015.05.21.min.js"></script>
<script src="webgl-0.8.1.min.js"></script>
<script>
var stage = new createjs.SpriteStage("canvas");
var image = new Image();
image.onload = function() {
createPixels();
}
image.src = "Chile-Flag.jpg";
var m = new createjs.Point(),
sprites = [],
container,
size = 25;
function createPixels() {
var maxSize = 300;
var r = Math.min(maxSize/image.width, maxSize/image.height);
var bmp = new createjs.Bitmap(image);
bmp.cache(0,0,image.width,image.height,r);
image = bmp.cacheCanvas;
var rows = image.height/size|0,
cols = image.width/size|0,
l = rows*cols;
var ss = new createjs.SpriteSheet({
images: [image],
frames: {width:size, height:size, count:l}
});
container = new createjs.SpriteContainer(ss);
container.regX = 0;//image.width/2;
container.regY = 0;//image.height/2;0;//
stage.addChild(container);
for (var i=0; i<l; i++) {
var sprite = new createjs.Sprite(ss);
container.addChild(sprite);
sprite.gotoAndStop(i);
sprites.push(sprite);
}
for (var i=0; i<l; i++) {
var sprite = sprites[i];
var col = i%cols;
var row = i/cols|0;
// Look behind
if (col>0) {
sprite.left = sprites[i-1];
}
if (i>cols-1) {
sprite.top = sprites[i-cols];
}
// Look ahead
if (col < cols - 1) {
sprite.right = sprites[i + 1];
}
if (row < rows - 1) {
sprite.bottom = sprites[i + cols];
}
var center = cols/2|0;
sprite.followX = (col < center ? sprite.left : (col > center ? sprite.right: null));
var middle = rows/2|0;
sprite.followY = (row < middle ? sprite.top : (row > middle ? sprite.bottom: null));
}
stage.on("stagemousemove", function(event) {
m.setValues(event.stageX, event.stageY);
});
}
function update(event) {
for (var i=0, l=sprites.length; i<l; i++) {
var range = Math.pow((Math.abs(i/l - 0.5))/0.5, 2); // 0-1-0
var ease = 0.8 + (0.015*range);
var sprite = sprites[i];
var left = m.x, top = m.y;
if (sprite.followX) {
left = sprite.followX.x - size;
}
if (sprite.followY) {
top = sprite.followY.y - size;
}
sprite.x += (left - sprite.x) * ease;
sprite.y += (top - sprite.y) * ease;
}
//for (var i=0, l=sprites.length; i<l; i++) {
// sprite = sprites[i];
// if (sprite.right) { sprite.scaleX = (sprite.right.x-sprite.x)/size; }
// if (sprite.bottom) { sprite.scaleY = (sprite.bottom.y - sprite.y)/size; }
//}
stage.update(event);
}
createjs.Ticker.on("tick", update);
LabTemplate.setupStageResize(stage);
</script>
</body>
</html>