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iambrandonn committed Sep 6, 2012
1 parent 66da277 commit 2e9af4047ed7eb5ce8480352bd69e45e87b4ee0d
Showing with 266 additions and 0 deletions.
  1. BIN peppers2.jpg
  2. BIN pineapple2.jpg
  3. BIN pumpkins2.jpg
  4. +266 −0 swiper.html
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@@ -0,0 +1,266 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <style>
+ body {
+ background-color: black;
+ }
+
+ .control {
+ font-size: 90px;
+ width: 96px;
+ color: white;
+ font-family: sans-serif;
+ font-weight: bold;
+ cursor: pointer;
+ vertical-align: middle;
+ display: inline-block;
+ text-shadow: 4px 6px 3px #777;
+ }
+
+ .pic {
+ height: 600px;
+ width: 800px;
+ }
+
+ .cropper {
+ height: 600px;
+ width: 800px;
+ overflow-x: hidden;
+ display: inline-block;
+ vertical-align: middle;
+ }
+
+ .content {
+ margin: 42px auto;
+ width: 1000px;
+ }
+
+ .allPics {
+ height: 600px;
+ width: 2400px;
+ font-size: 0;
+ -webkit-transform: translateX(0px);
+ -webkit-transition: all .7s;
+ -webkit-animation-duration: .7s
+ }
+
+ .right {
+ text-align: right;
+ }
+
+ @-webkit-keyframes bumpLeft {
+ from {
+ border: 10px solid green;
+ -webkit-transform: translateX(0px);
+ }
+
+ 35% {
+ border: 10px solid red;
+ -webkit-transform: translateX(100px);
+ }
+
+ to {
+ border: 10px solid blue;
+ -webkit-transform: translateX(0px);
+ }
+ }
+
+ @-webkit-keyframes bumpRight {
+ from {
+ -webkit-transform: translateX(-1600px);
+ }
+
+ 35% {
+ -webkit-transform: translateX(-1700px);
+ }
+
+ to {
+ -webkit-transform: translateX(-1600px);
+ }
+ }
+
+ video {
+ display: none;
+ }
+
+ canvas, input {
+ vertical-align: middle;
+ }
+ </style>
+</head>
+<body>
+ <div class="content">
+ <span class="control left">&lt;</span>
+ <span class="cropper">
+ <div class="allPics">
+ <img src="pumpkins2.jpg" class="pic" />
+ <img src="peppers2.jpg" class="pic" />
+ <img src="pineapple2.jpg" class="pic" />
+ </div>
+ </span>
+ <span class="control right" >&gt;</span>
+ </div>
+ <canvas width="400px" height="300px" id="cnvs"></canvas>
+ <canvas width="400px" height="300px" id="deltas"></canvas>
+ <input type="button" value="Stop">Stop</input>
+ <video autoplay></video>
+
+ <script src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
+ <script>
+ var PIXEL_CHANGE_THRESHOLD = 30;
+ var FRAME_THRESHOLD = 30000;
+ var imageNumber = 0;
+ var imageCount;
+ var greyscaleCtx = $("#cnvs")[0].getContext("2d");
+ var deltasCtx = $("#deltas")[0].getContext("2d");
+ var previousImageData;
+ var currentImageData = deltasCtx.createImageData(320, 240);
+
+ var originalWeight = 0;
+ var currentWeight = 0;
+ var horizontalResolution;
+ var verticalResolution;
+ var isActive = false;
+ var remainingFrames = 8;
+
+ navigator.webkitGetUserMedia({video: true}, function(stream) {
+ var video = $("video")[0];
+ video.src = window.webkitURL.createObjectURL(stream);
+
+ setTimeout(function() {
+ $("input").click(function() {
+ stream.stop();
+ clearInterval(refreshInterval);
+ });
+
+ horizontalResolution = video.videoWidth;
+ verticalResolution = video.videoHeight;
+
+ // if we see a frame above the frame threshold...
+
+ var refreshInterval = setInterval(function() {
+ greyscaleCtx.drawImage(video, 0, 0, horizontalResolution, verticalResolution, 0, 0, horizontalResolution / 2, verticalResolution / 2);
+ previousImageData = currentImageData;
+ currentImageData = deSaturate(greyscaleCtx.getImageData(0, 0, horizontalResolution / 2, verticalResolution / 2));
+ greyscaleCtx.putImageData(currentImageData, 0, 0);
+
+ deltasCtx.putImageData(getDeltas(previousImageData, currentImageData), 0, 0);
+
+ if (!isActive) {
+ if (Math.abs(currentWeight) > FRAME_THRESHOLD) {
+ isActive = true;
+ remainingFrames = 8;
+ originalWeight = currentWeight;
+ }
+ }
+ if (isActive) {
+ if (remainingFrames <= 0) {
+ isActive = false;
+ }
+ else {
+ remainingFrames--;
+ if (originalWeight > 0) {
+ if (currentWeight < -FRAME_THRESHOLD) {
+ previous();
+ isActive = false;
+ }
+ }
+ else {
+ if (currentWeight > FRAME_THRESHOLD) {
+ next();
+ isActive = false;
+ }
+ }
+ }
+ }
+ }, 1000/15);
+ }, 1000);
+ });
+
+ function getDeltas(previous, current) {
+ currentWeight = 0;
+ var deltas = deltasCtx.createImageData(previous);
+
+ var previousData = previous.data;
+ var currentData = current.data;
+ var dataLength = previousData.length;
+ var deltasData = deltas.data;
+ for (var i = 0; i < dataLength; i += 4) {
+ if (Math.abs(previousData[i] - currentData[i]) > PIXEL_CHANGE_THRESHOLD) {
+ var pixelPlace = ((i / 4) % horizontalResolution) - (horizontalResolution / 2);
+ currentWeight += pixelPlace;
+ deltasData[i] = deltasData[i+1] = deltasData[i+2] = 255;
+ }
+ deltasData[i+3] = 255;
+ }
+
+ console.log(currentWeight);
+ return deltas;
+ }
+
+ $(function() {
+ $(".left").click(previous);
+ $(".right").click(next);
+
+ imageCount = $(".pic").length;
+ });
+
+ function next() {
+ if (imageNumber <= (imageCount - 2)) {
+ imageNumber++;
+ $(".allPics").css("-webkit-transform", "translateX(" + imageNumber * -800 + "px)");
+ }
+ else {
+ bumpRight();
+ }
+ }
+
+ function previous() {
+ if (imageNumber >= 1) {
+ imageNumber--;
+ $(".allPics").css("-webkit-transform", "translateX(" + imageNumber * -800 + "px)");
+ }
+ else {
+ bumpLeft();
+ }
+ }
+
+ function doAnimation(element, animationName) {
+ element.css({
+ "-webkit-animation-name": animationName
+ });
+ element[0].addEventListener("webkitAnimationEnd", function() {
+ element.css({
+ "-webkit-animation-name": ""
+ });
+ }, false);
+ }
+
+ function bumpLeft() {
+ var allPics = $(".allPics");
+ doAnimation(allPics, "bumpLeft");
+ }
+
+ function bumpRight() {
+ var allPics = $(".allPics");
+ doAnimation(allPics, "bumpRight");
+ }
+
+ function deSaturate(imageData) {
+ var newImageData = greyscaleCtx.createImageData(imageData);
+ var theData = imageData.data;
+ var newData = newImageData.data;
+ var dataLength = theData.length;
+ for (var i = 0; i < dataLength; i += 4) {
+ var average = (theData[i] + theData[i + 1] + theData[i + 2]) / 3;
+ newData[i] = newData[i+1] = newData[i+2] = average;
+ newData[i+3] = 255;
+ }
+
+ return newImageData;
+ }
+
+ </script>
+</body>
+</html>

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