Some old stuff I had laying around in a work folder - massive refactoring ahoy
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Ryan McGrath
parent
595abe62c6
commit
8e985309ff
5 changed files with 228 additions and 299 deletions
201
js/franz.js
201
js/franz.js
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@ -4,8 +4,6 @@
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* @Author Dominick Pham (http://twitter.com/enotionz)
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*/
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/* Define some basic prototypes that we'll require later.. */
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if(!Array.prototype.swap) {
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Array.prototype.swap = function(a, b) {
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var tmp = this[a];
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@ -15,15 +13,60 @@ if(!Array.prototype.swap) {
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}
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}
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/* allows numeric sorting for built in js sort */
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function sortNumber(a,b) { return a - b;}
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var franz = function(franzProps) {
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/* new franz({
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canvas: "canvas_id",
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src: "image_src",
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callback: fn() { ... }
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});
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Stores a reference to our canvas and the canvas context for future use. Accepts
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an optional callback function to tie this into further methods.
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Note: Since there's no way to get the type of <canvas> support we need in Internet Explorer,
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we actually branch the codepath here - IE gets a small flash applet that handles pulling color data out. We additionally serve
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this if, for some reason, <canvas> support is lacking or broken in newer browser (or Firefox 2, etc).
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The data is still parsed via JS by using externalInterface() callbacks into the Flash applet, so it's safe to
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assume that anything occuring after getColors() is back in global-browser-use land.
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*/
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this.canvas_id = franzProps.canvas;
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if(typeof document.getElementById(franzProps.canvas).getContext === "function") {
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/* Canvas is natively supported, go down the normal path... */
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this.canvas = document.getElementById(franzProps.canvas);
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this.ctx = this.canvas.getContext('2d');
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if(typeof franzProps.callback !== "undefined" && typeof franzProps.callback === "function") franzProps.callback();
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} else {
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/* We're dealing with something that belongs in an old folks home; throw in the life support. (Embed Flash junk) :(
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Inject SWFObject so we can deal with Flash embedding in a sane manner...
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*/
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if(typeof swfobject === "undefined") {
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var newScript = document.createElement("script");
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newScript.type = "text/javascript";
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newScript.src = "/js/swfobject.js";
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document.body.appendChild(newScript);
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/* Franz - this is where the magic happens, pay close attention. ;) */
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var franz = {
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canvas: {},
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ctx: {},
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img: {},
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if(typeof franzProps.callback !== "undefined" && typeof franzProps.callback === "function") {
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// Catch the callback function for IE...
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newScript.onreadystatechange = function() {
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if(newScript.readyState == "loaded" || newScript.readyState == "complete") franzProps.callback();
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return false;
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}
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// Catch all other misguided browsers, just in case (Really old versions of Safari that don't have good <canvas> support will fail totally, but that's far too much to care about)
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newScript.onload = function() {
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franzProps.callback();
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return false;
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}
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}
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return false;
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}
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// If swfobject was already appended once, just catch the callback and run
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if(typeof franzProps.callback !== "undefined" && typeof franzProps.callback === "function") franzProps.callback();
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}
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}
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franz.prototype = {
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alpha: [],
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red: [],
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green: [],
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@ -36,60 +79,38 @@ var franz = {
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light: [],
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origIndex: [],
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init: function(canvas_id) {
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franz.canvas = document.getElementById(canvas_id);
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franz.ctx = franz.canvas.getContext('2d');
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return false;
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},
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clone: function(obj) {
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if(typeof obj !== "undefined") {
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/* Recursively iterate through objects and clone them (Don't even try to put this on the Object prototype (recursion fail)) */
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var returnObj = (obj instanceof Array) ? [] : {};
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for(i in obj) {
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if(i == 'clone') continue;
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if(obj[i] != null && typeof obj[i] == "object") {
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returnObj[i] = franz.clone(obj[i]);
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} else {
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returnObj[i] = obj[i];
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}
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}
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return returnObj;
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}
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},
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loadImg: function(img_src) {
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franz.img = new Image();
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franz.img.onload = function() {
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franz.ctx.drawImage(franz.img, 0, 0, 100, 100);
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setTimeout(function() { franz.getColors(); }, 100);
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/* If you're looking for the non-<canvas> portion of this, check the associated Flash files. */
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var working = this;
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working.img = new Image();
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working.img.onload = function() {
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working.ctx.drawImage(working.img, 0, 0, 100, 100);
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setTimeout(function() { working.getColors(); }, 100);
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}
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franz.img.src = img_src;
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return false;
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working.img.src = img_src;
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},
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getColors: function() {
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/* If you're looking for the non-<canvas> portion of this, check the associated Flash files. */
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var hidden_canvas = document.getElementById("lol_hidden"),
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extra_ctx = hidden_canvas.getContext('2d');
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extra_ctx.drawImage(franz.img, 0, 0, 33, 33);
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extra_ctx.drawImage(this.img, 0, 0, 33, 33);
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var imageData = extra_ctx.getImageData(1, 1, 32, 32).data;
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for(var i = 0; i*4 < imageData.length; i++) {
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franz.red[i] = imageData[i*4];
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franz.green[i] = imageData[i*4 + 1];
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franz.blue[i] = imageData[i*4 + 2];
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franz.alpha[i] = imageData[i*4 + 3];
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this.red[i] = imageData[i*4];
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this.green[i] = imageData[i*4 + 1];
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this.blue[i] = imageData[i*4 + 2];
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this.alpha[i] = imageData[i*4 + 3];
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}
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/* get hue sat val array */
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franz.RGBtoHSVHL();
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this.RGBtoHSVHL();
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/* show original image */
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franz.displayImg();
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this.displayImg();
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return false;
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},
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@ -98,13 +119,13 @@ var franz = {
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RGBtoHSVHL: function() {
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var min, max;
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for(var i = 0; i < franz.alpha.length; i++) {
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franz.value[i] = franz.getValHSV(franz.red[i],franz.green[i],franz.blue[i]);
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franz.satV[i] = franz.getSatHSV(franz.red[i],franz.green[i],franz.blue[i]);
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franz.hue[i] = franz.getHue(franz.red[i],franz.green[i],franz.blue[i]);
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for(var i = 0; i < this.alpha.length; i++) {
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this.value[i] = this.getValHSV(this.red[i], this.green[i], this.blue[i]);
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this.satV[i] = this.getSatHSV(this.red[i], this.green[i], this.blue[i]);
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this.hue[i] = this.getHue(this.red[i], this.green[i], this.blue[i]);
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franz.satL[i] = franz.getSatHSL(franz.red[i],franz.green[i],franz.blue[i]);
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franz.light[i] = franz.getLightHSL(franz.red[i],franz.green[i],franz.blue[i]);
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this.satL[i] = this.getSatHSL(this.red[i], this.green[i], this.blue[i]);
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this.light[i] = this.getLightHSL(this.red[i], this.green[i], this.blue[i]);
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}
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return false
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@ -148,7 +169,7 @@ var franz = {
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getSatHSL: function(red, green, blue) {
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var min = Math.min(red, Math.min(green, blue)),
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max = Math.max(red, Math.max(green, blue)),
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lightness = franz.getLightHSL(),
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lightness = this.getLightHSL(),
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sat;
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if(min == max) return 0;
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@ -166,10 +187,11 @@ var franz = {
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},
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displayColors: function(order_array) {
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console.log("displaying colors");
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var docStr = "";
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for(var i = 0; i < franz.alpha.length; i++) {
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docStr += '<div class="color_boxd" style="background-color: rgb(' + franz.red[order_array[i]] + ', ' + franz.green[order_array[i]] + ',' + franz.blue[order_array[i]] + ');"></div>';
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for(var i = 0; i < this.alpha.length; i++) {
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docStr += '<div class="color_boxd" style="background-color: rgb(' + this.red[order_array[i]] + ', ' + this.green[order_array[i]] + ',' + this.blue[order_array[i]] + ');"></div>';
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}
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document.getElementById("log_colors").innerHTML = docStr;
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@ -182,48 +204,39 @@ var franz = {
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return false;
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},
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resetIndex: function() {
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/* keep track of original index so we don't have to revert
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back to RGB just to display output */
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for (var i=0; i < franz.alpha.length; i++) {
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franz.origIndex[i] = i;
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}
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return false;
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},
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displayImg: function() {
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franz.resetIndex();
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franz.displayColors(franz.origIndex);
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this.resetIndex();
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this.displayColors(this.origIndex);
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return false;
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},
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displayHue: function() {
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franz.indexSort(franz.clone(franz.hue), 0, franz.alpha.length);
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franz.displayColors(franz.origIndex);
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this.indexSort(franz.util.clone(this.hue), 0, this.alpha.length);
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this.displayColors(this.origIndex);
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return false;
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},
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displaySat: function() {
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franz.indexSort(franz.clone(franz.satV), 0, franz.alpha.length);
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franz.displayColors(franz.origIndex);
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this.indexSort(franz.util.clone(this.satV), 0, this.alpha.length);
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this.displayColors(this.origIndex);
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return false;
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},
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displayVal: function() {
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franz.indexSort(franz.clone(franz.value), 0, franz.alpha.length);
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franz.displayColors(franz.origIndex);
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this.indexSort(franz.util.clone(this.value), 0, this.alpha.length);
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this.displayColors(this.origIndex);
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return false;
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},
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displaySatL: function() {
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franz.indexSort(franz.clone(franz.satL), 0, franz.alpha.length);
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franz.displayColors(franz.origIndex);
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this.indexSort(franz.util.clone(this.satL), 0, this.alpha.length);
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this.displayColors(this.origIndex);
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return false;
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},
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displayLight: function() {
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franz.indexSort(franz.clone(franz.light), 0, franz.alpha.length);
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franz.displayColors(franz.origIndex);
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this.indexSort(franz.util.clone(this.light), 0, this.alpha.length);
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this.displayColors(this.origIndex);
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return false;
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},
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@ -242,7 +255,6 @@ var franz = {
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count++;
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}
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}
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console.log("frequency of values between " + i*step + " and " + (i*step + interval) + " = " + count);
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densityArray[i] = count;
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}
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@ -251,18 +263,45 @@ var franz = {
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/* bubble sort floats around and pops in your face */
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indexSort: function(inputArray, start, end) {
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franz.resetIndex();
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this.resetIndex();
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for (var i = start; i < end; i++) {
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for (var j = end-1; j >= start; j--) {
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var diff = inputArray[j] - inputArray[i]
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if (diff > 0) {
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inputArray.swap(i,j+1);
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franz.origIndex.swap(i,j+1);
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this.origIndex.swap(i,j+1);
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}
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}
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}
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},
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resetIndex: function() {
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/* keep track of original index so we don't have to revert back to RGB just to display output */
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for(var i = 0; i < this.alpha.length; i++) {
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this.origIndex[i] = i;
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}
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return false;
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}
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}
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franz.util = {
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clone: function(obj) {
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/* Utility function for deep cloning */
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if(typeof obj !== "undefined") {
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var returnObj = (obj instanceof Array) ? [] : {};
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for(i in obj) {
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if(obj[i] != null && typeof obj[i] == "object") {
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returnObj[i] = franz.util.clone(obj[i]);
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} else {
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returnObj[i] = obj[i];
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}
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}
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return returnObj;
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}
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},
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RGBtoHex: function(rgb) {
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var hex = [];
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