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var ReReReRe = function() {
$("#nojs").remove();
var cnt = 0;
var inuse = [];
var res = [window.innerWidth, window.innerHeight];
var canvas = $("<canvas />").attr("width", res[0]).attr("height", res[1]).css("position", "absolute").css("width", "100%").css("height", "100%").appendTo($("body"));
var context = canvas[0].getContext("2d");
var sources = [];
var supportedGCO = (function getGCOModes() {
var ctx = document.createElement('canvas').getContext('2d');
//var gCO = ["source-over", "source-in", "source-out", "source-atop", "destination-over", "destination-in", "destination-out", "destination-atop", "lighter", "copy", "xor", "multiply", "screen", "overlay", "darken", "color-dodge", "color-burn", "hard-light", "soft-light", "difference", "exclusion", "hue", "saturation", "color", "luminosity"];
var gCO = ["destination-atop", "lighter", "copy", "xor", "multiply", "screen", "overlay", "darken", "color-dodge", "color-burn", "hard-light", "soft-light", "difference", "exclusion", "hue", "saturation", "color", "luminosity"];
return gCO.filter(function(g) {
ctx.globalCompositeOperation = g;
return ctx.globalCompositeOperation === g;
});
})();
var enabledGCO = {};
supportedGCO.forEach(function(val) {
var item = $("<label />");
var input = $("<input />", {id: "blend"+val}).attr("type", "checkbox").attr("checked", "checked");
input.click(function(){
enabledGCO[val] = $(this).prop("checked");
});
item.append(input);
item.append(val);
enabledGCO[val] = true;
$("#blendtypes").append(item).append("<br />");
});
//var res = [1920, 1080];
function randomBoolean() {
return (Math.random() > 0.5);
}
function randomInt(max) {
return Math.floor(Math.random()*max);
}
function randomPosition(wo, ho) {
if (wo && ho) {
xmax = res[0] - wo;
ymax = res[1] - ho;
} else {
xmax = res[0];
ymax = res[1];
}
return [Math.floor(xmax*Math.random()), Math.floor(ymax*Math.random())];
}
function randomSource() {
return sources[Math.floor((sources.length - 1)*Math.random())]
}
function randomGCO() {
var gcos = [];
for (var k in enabledGCO) {
if (enabledGCO[k]) gcos.push(k);
}
return gcos[Math.floor((gcos.length - 1)*Math.random())];
}
var Source = function() {
var img = new Image();
img.src = randomSource();
$("#latest").html($("<a />").text(img.src).attr("href", img.src));
function remove() {
delete img;
}
var descriptorLength = 256;
var matchesShown = 30;
var blurRadius = 3;
img.onload = function() {
for (var x = 0; x < randomInt(10); x++) {
var staging = $("<canvas />").attr("width", this.width).attr("height", this.height);
var scontext = staging[0].getContext("2d");
scontext.drawImage(img, 0, 0, this.width, this.height);
if (cnt != 0) {
var imageData1 = context.getImageData(0, 0, res[0], res[1]);
var imageData2 = scontext.getImageData(0, 0, this.width, this.height);
var gray1 = tracking.Image.grayscale(tracking.Image.blur(imageData1.data, width, height, blurRadius), width, height);
var gray2 = tracking.Image.grayscale(tracking.Image.blur(imageData2.data, width, height, blurRadius), width, height);
var corners1 = tracking.Fast.findCorners(gray1, width, height);
var corners2 = tracking.Fast.findCorners(gray2, width, height);
var descriptors1 = tracking.Brief.getDescriptors(gray1, width, corners1);
var descriptors2 = tracking.Brief.getDescriptors(gray2, width, corners2);
var matches = tracking.Brief.reciprocalMatch(corners1, descriptors1, corners2, descriptors2);
matches.sort(function(a, b) {
return b.confidence - a.confidence;
});
for (var i = 0; i < Math.min(matchesShown, matches.length); i++) {
scontext.globalCompositeOperation = "destination-in"; // source-in ???
context.fillStyle = "#FFFFFF";
scontext.fillRect(matches[i].keypoint1[0], matches[i].keypoint1[1], 4, 4);
scontext.fillRect(matches[i].keypoint2[0] + width, matches[i].keypoint2[1], 4, 4);
scontext.beginPath();
scontext.moveTo(matches[i].keypoint1[0], matches[i].keypoint1[1]);
scontext.lineTo(matches[i].keypoint2[0] + width, matches[i].keypoint2[1]);
scontext.fill();
}
context.globalCompositeOperation = randomGCO();
}
// screen, luminosity, xor, color, saturation
//context.globalAlpha = (Math.random()/2) + 0.5;
var rotate = randomBoolean();
if (rotate) { // apply rotation
context.save();
var degrees = Math.random()*30;
if (randomBoolean()) degrees = -degrees;
context.rotate(degrees*Math.PI / 180);
}
var pos = randomPosition(this.width, this.height);
context.drawImage(staging[0], pos[0], pos[1], this.width, this.height);
staging.remove();
if (rotate) {
context.restore();
}
}
cnt ++;
this.onload = null; // get one frame from mjpeg only
// doesn't work, shit carries on loading. setTimeout(function() { img = null; }, 1000);
setTimeout(remove, 1500);
};
};
function step() {
var x = new Source();
setTimeout(step, randomInt(5000)+2000);
}
$.ajax({
dataType: "json",
url: "sources.json",
success: function(response) {
sources = response.data;
step();
}
});
function pmover() {
$("#details").show();
$("#pi").off("mouseover");
$("#details").mouseleave(function(){
$(this).hide();
$(this).off("mouseleave");
$("#pi").mouseover(pmover);
});
}
$("#clear").click(function(){
context.clearRect(0, 0, res[0], res[1]);
});
$("#pi").mouseover(pmover);
$("#snap").click(function(){
var data = canvas[0].toDataURL();
$.ajax({
type: "POST",
url: "req/request.py",
data: {
image: data
},
success: function(response) {
alert("ok? " + response.ok);
}
});
});
};
$(function(){
window.rererere = new ReReReRe();
});
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