merging from my fork
This commit is contained in:
Dominick Pham
parent
2fa4fb4414
commit
905a03075c
3 changed files with 213 additions and 13 deletions
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@ -84,7 +84,7 @@ a:hover { text-decoration: underline; }
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width: 370px;
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}
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#img_submit {
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#img_submit, #hsv a {
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border: 1px solid #55a2c9;
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background-color: #498fb2;
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color: #fff;
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@ -92,6 +92,18 @@ a:hover { text-decoration: underline; }
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-moz-border-radius: 4px;
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-webkit-border-radius: 4px;
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}
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#hsv a {
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display: block;
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width: 104px;
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padding: 0 5px;
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text-align: center;
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float: left;
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margin-right: 15px;
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text-decoration: none;
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}
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#try_these {
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clear: both;
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}
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#log_colors { padding-left: 4px; }
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@ -103,3 +115,7 @@ a:hover { text-decoration: underline; }
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-moz-border-radius: 2px;
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margin: 2px 6px 3px 0;
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}
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.hideme {
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display: none;
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}
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25
index.html
25
index.html
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@ -15,6 +15,27 @@
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img_input = document.getElementById("img_input");
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$("#franz_form").submit(function() {
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franz.loadImg(img_input.value);
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$("#hsv").removeClass("hideme");
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return false;
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});
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$("#try_these a").click(function(event){
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img_input.value = this.innerHTML;
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return false;
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});
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$("#sort_hue").click(function(event){
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franz.displayHue();
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return false;
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});
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$("#sort_sat").click(function(event){
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franz.displaySat();
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return false;
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});
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$("#sort_val").click(function(event){
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franz.displayVal();
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return false;
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});
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});
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@ -35,7 +56,9 @@
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<input type="text" id="img_input" value="lol.png">
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<input type="submit" id="img_submit" value="Go for it!">
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</form>
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<p><strong>Try out:</strong> lol.png, testjubs.jpg, stars.jpg, 1600.jpg, fallout.jpg</p>
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<p id="hsv" class="hideme"><a href="#" id="sort_hue">Sort Hue</a> <a href="#" id="sort_sat">Sort Saturation</a> <a href="#" id="sort_val">Sort Value</a> </p>
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<p id="try_these"><strong>Try out:</strong> <a href="#">lol.png</a>, <a href="#">testjubs.jpg</a>, <a href="#">stars.jpg</a>, <a href="#">1600.jpg</a>, <a href="#">fallout.jpg</a></p>
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</div>
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</div>
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181
js/franz.js
181
js/franz.js
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@ -3,6 +3,14 @@ var franz = {
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ctx: {},
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img: {},
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final_colors: [],
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red: [],
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green: [],
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blue: [],
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alpha: [],
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hue: [],
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sat: [],
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val: [],
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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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@ -22,23 +30,176 @@ var franz = {
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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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docString = "";
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extra_ctx = hidden_canvas.getContext('2d');
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extra_ctx.drawImage(franz.img, 0, 0, 19, 19);
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var imageData = extra_ctx.getImageData(1, 1, 18, 18).data,
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arr = [];
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var imageData = extra_ctx.getImageData(1, 1, 18, 18).data;
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for(var i = 0; i < imageData.length; i = i + 4) {
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arr[0] = imageData[i];
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arr[1] = imageData[i + 1];
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arr[2] = imageData[i + 2];
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// Ugly 4AM method, don't ask
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docString += '<div class="color_box" style="background-color: rgb(' + arr[0] + ', ' + arr[1] + ',' + arr[2] + ');"></div>';
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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.RGBtoHSV();
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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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displayImg: function() {
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var docString = "";
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for(var i = 0; i < franz.alpha.length; i++) {
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docString += '<div class="color_box" style="background-color: rgb(' + franz.red[i] + ', ' + franz.green[i] + ',' + franz.blue[i] + ');"></div>';
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}
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document.getElementById("log_colors").innerHTML = docString;
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$("#container_bottom").fadeIn("slow");
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return false;
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},
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/* Converts RGB to the Hue/Saturation/Value model */
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RGBtoHSV: function() {
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var min, max, delta;
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for(var i = 0; i < franz.alpha.length; i++) {
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min = Math.min(franz.red[i],Math.min(franz.green[i],franz.blue[i]));
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max = Math.max(franz.red[i],Math.max(franz.green[i],franz.blue[i]));
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franz.val[i] = max;
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delta = max - min;
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if (max != 0)
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franz.sat[i] = delta / max;
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else {
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// max val is 0, you have black
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franz.sat[i] = 0;
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franz.hue[i] = -1;
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return;
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}
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if (franz.red[i] == max)
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franz.hue[i] = ( franz.green[i] - franz.blue[i]) / delta; //between yellow & magenta
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else if (franz.green[i] == max)
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franz.hue[i] = 2 + (franz.blue[i] - franz.red[i]) / delta; //between cyan & yellow
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else
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franz.hue[i] = 4 + (franz.red[i] - franz.green[i]) / delta; //between magenta & cyan
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// hue degrees
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franz.hue[i] = franz.hue[i] * 60;
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if (franz.hue[i] < 0) franz.hue[i] += 360;
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}
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},
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displayHue: function() {
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var docString = "";
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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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franz.qsort(franz.hue, 0, franz.hue.length);
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for(var i = 0; i < franz.alpha.length; i++) {
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docString += '<div class="color_box" style="background-color: rgb(' + franz.red[franz.origIndex[i]] + ', ' + franz.green[franz.origIndex[i]] + ',' + franz.blue[franz.origIndex[i]] + ');"></div>';
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}
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document.getElementById("log_colors").innerHTML = docString;
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$("#container_bottom").fadeIn("slow");
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return false;
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},
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displaySat: function() {
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var docString = "";
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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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franz.qsort(franz.sat, 0, franz.sat.length);
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for(var i = 0; i < franz.alpha.length; i++) {
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docString += '<div class="color_box" style="background-color: rgb(' + franz.red[franz.origIndex[i]] + ', ' + franz.green[franz.origIndex[i]] + ',' + franz.blue[franz.origIndex[i]] + ');"></div>';
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}
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document.getElementById("log_colors").innerHTML = docString;
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$("#container_bottom").fadeIn("slow");
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return false;
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},
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displayVal: function() {
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var docString = "";
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/* keep track of original index so we don't have to revert
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back to RGB just to display output */
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for (var i=0; i < franz.alpha.length; i++) {
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franz.origIndex[i] = i;
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}
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franz.qsort(franz.val, 0, franz.val.length);
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for(var i = 0; i < franz.alpha.length; i++) {
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docString += '<div class="color_box" style="background-color: rgb(' + franz.red[franz.origIndex[i]] + ', ' + franz.green[franz.origIndex[i]] + ',' + franz.blue[franz.origIndex[i]] + ');"></div>';
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}
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document.getElementById("log_colors").innerHTML = docString;
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$("#container_bottom").fadeIn("slow");
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return false;
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},
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/* quicksort algorithm with that also swaps original index */
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sort_Partition: function(array, begin, end, pivot) {
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var piv=array[pivot];
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array.swap(pivot, end-1);
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franz.origIndex.swap(pivot, end-1);
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var store=begin;
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var ix;
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for(ix=begin; ix<end-1; ++ix) {
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if(array[ix]<=piv) {
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array.swap(store, ix);
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franz.origIndex.swap(store, ix);
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++store;
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}
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}
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array.swap(end-1, store);
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franz.origIndex.swap(end-1, store);
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return store;
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},
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qsort: function(array, begin, end) {
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if(end-1>begin) {
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var pivot=begin+Math.floor(Math.random()*(end-begin));
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pivot=franz.sort_Partition(array, begin, end, pivot);
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franz.qsort(array, begin, pivot);
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franz.qsort(array, pivot+1, end);
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}
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}
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}
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/* define swap method for Array object */
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Array.prototype.swap=function(a, b)
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{
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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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}
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