Adding development versions, use these for profiling core franz issues
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Veno Server
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js/dev.js
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241
js/dev.js
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/* Franz.js - Client side color swatches (awesomeness)
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*
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* @Author Ryan McGrath (http://twitter.com/ryanmcgrath)
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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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Array.prototype.swap = function(a, b) {
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var tmp = this[a];
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this[a] = this[b];
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this[b] = tmp;
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return true; /* For the sake of being complete */
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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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/* 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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alpha: [],
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red: [],
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green: [],
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blue: [],
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hue: [],
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satV: [],
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value: [],
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satL: [],
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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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/* 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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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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}
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franz.img.src = img_src;
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return false;
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},
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getColors: function() {
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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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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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}
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/* get hue sat val array */
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franz.RGBtoHSVHL();
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/* show original image */
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franz.displayImg();
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return false;
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},
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/* Converts RGB to the Hue/Saturation/Value, Saturation/Lightness model */
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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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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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}
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return false
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},
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getHue: 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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delta = max - min,
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hue;
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if (max == min)
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return 0;
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else {
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if(red == max)
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hue = (green - blue) / delta; //between yellow & magenta
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else if(green == max)
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hue = 2 + (blue - red) / delta; //between cyan & yellow
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else
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hue = 4 + (red - green) / delta; //between magenta & cyan
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// hue degrees
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hue = hue * 60;
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if(hue < 0) hue += 360;
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}
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return hue;
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},
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getSatHSV: 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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delta = max - min,
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sat = delta / max;
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return sat;
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},
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getValHSV: function(red, green, blue) { return Math.max(red, Math.max(green,blue)); },
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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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sat;
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if(min == max) return 0;
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if(lightness < 1/2) sat = (max-min)/(max+min);
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else sat = (max - min) / (2 - (max + min));
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return sat;
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},
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getLightHSL: 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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return 0.5 * (min + max);
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},
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displayColors: function(order_array) {
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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_box" style="background-color: rgb(' + franz.red[order_array[i]] + ', ' + franz.green[order_array[i]] + ',' + franz.blue[order_array[i]] + ');"></div>';
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}
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document.getElementById("log_colors").innerHTML = docStr;
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if(typeof jQuery != "undefined") $("#container_bottom").fadeIn("slow");
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else document.getElementById("container_bottom").style.display = "block";
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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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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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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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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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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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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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return false;
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},
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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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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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console.log("j=" + inputArray[j] + " i=" + inputArray[i] + " -> " + diff);
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if (diff > 0) {
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console.log("swapped");
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inputArray.swap(i,j+1);
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franz.origIndex.swap(i,j+1);
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}
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if (j == end-20) break;
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}
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if (i == 20) break;
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}
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}
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}
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