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<!doctype html>
<html>
<body>
<div id="state"></div><br>
frames: <input type="text" id="frameCount">
<div id="buttons"></div>
<video id="vid" style="display: none"></video>
<button id="camera" style="display:none">camera</button>
</body>
<script src="/js/jquery.js"></script>
<script src="canvasquery.js"></script>
<script src="http://asdf.us/dither/js/camera.js"></script>
<script>
var images = "gradient_top.png gradient_bot.png gradient_left.png gradient_right.png gradient_radial.png gradient_bands.png gradient_radial_bands.png swoosh.png swoosh_blur.png louisvuitton.jpg".split(" ")
var state = document.getElementById('state')
for (var i in images) {
button(images[i]);
}
function button (src) {
var el = document.createElement("button");
el.innerHTML = src;
el.onclick = function(){ loadImage(src) }
document.getElementById("buttons").appendChild( el );
}
var frameCountEl = document.getElementById("frameCount");
var frameCount = frameCountEl.value = 255
frameCountEl.addEventListener("keyup", function(){
var _this = this;
setTimeout(function(){
frameCount = parseInt( _this.value.replace(/[^0-9]/g,"") )
});
}, false)
var cc = cq(1,1)
min = Math.min
$("#camera").trigger("click")
var checker = setInterval(function(){
if (window.cam) {
clearInterval(checker)
video = cam
loaded()
}
}, 200)
function loaded () {
src = cq(w, h)
dest = cq(w, h).appendTo("body");
loadImage( images[0] )
video.play()
}
state.innerHTML = "loading";
function loadImage(src){
var image = new Image ();
image.addEventListener("load", function(){
var iq = cq(w, h)
.drawImage( image, 0, 0, image.naturalWidth, image.naturalHeight, 0, 0, w, h )
imageData = iq.getImageData( 0, 0, w, h )
mask = iq.grayscaleToMask()
console.log('got it')
}, false);
image.src = src;
}
var src, dest, mask, fill, imageData;
var frames = [];
var ready = false;
(function animate(){
requestAnimationFrame(animate);
if (! src || ! mask) return;
storeFrame();
if (ready) render();
})();
function storeFrame(){
src.drawImage(video, 0, 0, video.videoWidth, video.videoHeight, 0, 0, w, h)
var data = src.getImageData(0, 0, w, h)
if (frames.length > frameCount) {
frames.shift()
if (! ready) {
ready = true;
state.innerHTML = "playing"
}
}
else {
state.innerHTML = "buffering " + frames.length;
}
frames.push(data.data)
}
function render(){
data = imageData.data
buffered = frames.length - 1
for (var i = 0; i < mask.length; i++) {
var j = i * 4;
var n = Math.min(buffered, Math.floor( frameCount * mask[i] / 255 ))
data[j] = frames[n][j]
data[j+1] = frames[n][j+1]
data[j+2] = frames[n][j+2]
}
dest.putImageData(imageData, 0, 0)
}
</script>
</html>
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