merging from my fork
This commit is contained in:
Dominick Pham
parent
2fa4fb4414
commit
905a03075c
3 changed files with 213 additions and 13 deletions
183
js/franz.js
183
js/franz.js
|
|
@ -3,6 +3,14 @@ var franz = {
|
|||
ctx: {},
|
||||
img: {},
|
||||
final_colors: [],
|
||||
red: [],
|
||||
green: [],
|
||||
blue: [],
|
||||
alpha: [],
|
||||
hue: [],
|
||||
sat: [],
|
||||
val: [],
|
||||
origIndex: [],
|
||||
|
||||
init: function(canvas_id) {
|
||||
franz.canvas = document.getElementById(canvas_id);
|
||||
|
|
@ -22,23 +30,176 @@ var franz = {
|
|||
|
||||
getColors: function() {
|
||||
var hidden_canvas = document.getElementById("lol_hidden"),
|
||||
extra_ctx = hidden_canvas.getContext('2d'),
|
||||
docString = "";
|
||||
extra_ctx = hidden_canvas.getContext('2d');
|
||||
|
||||
extra_ctx.drawImage(franz.img, 0, 0, 19, 19);
|
||||
var imageData = extra_ctx.getImageData(1, 1, 18, 18).data,
|
||||
arr = [];
|
||||
var imageData = extra_ctx.getImageData(1, 1, 18, 18).data;
|
||||
|
||||
for(var i = 0; i < imageData.length; i = i + 4) {
|
||||
arr[0] = imageData[i];
|
||||
arr[1] = imageData[i + 1];
|
||||
arr[2] = imageData[i + 2];
|
||||
// Ugly 4AM method, don't ask
|
||||
docString += '<div class="color_box" style="background-color: rgb(' + arr[0] + ', ' + arr[1] + ',' + arr[2] + ');"></div>';
|
||||
for(var i = 0; i*4 < imageData.length; i++) {
|
||||
franz.red[i] = imageData[i*4];
|
||||
franz.green[i] = imageData[i*4 + 1];
|
||||
franz.blue[i] = imageData[i*4 + 2];
|
||||
franz.alpha[i] = imageData[i*4 + 3];
|
||||
}
|
||||
|
||||
/* get hue sat val array */
|
||||
franz.RGBtoHSV();
|
||||
|
||||
/* show original image */
|
||||
franz.displayImg();
|
||||
|
||||
return false;
|
||||
},
|
||||
displayImg: function() {
|
||||
var docString = "";
|
||||
|
||||
for(var i = 0; i < franz.alpha.length; i++) {
|
||||
docString += '<div class="color_box" style="background-color: rgb(' + franz.red[i] + ', ' + franz.green[i] + ',' + franz.blue[i] + ');"></div>';
|
||||
}
|
||||
|
||||
document.getElementById("log_colors").innerHTML = docString;
|
||||
$("#container_bottom").fadeIn("slow");
|
||||
return false;
|
||||
|
||||
return false;
|
||||
},
|
||||
|
||||
|
||||
|
||||
/* Converts RGB to the Hue/Saturation/Value model */
|
||||
RGBtoHSV: function() {
|
||||
var min, max, delta;
|
||||
|
||||
for(var i = 0; i < franz.alpha.length; i++) {
|
||||
|
||||
min = Math.min(franz.red[i],Math.min(franz.green[i],franz.blue[i]));
|
||||
max = Math.max(franz.red[i],Math.max(franz.green[i],franz.blue[i]));
|
||||
franz.val[i] = max;
|
||||
|
||||
delta = max - min;
|
||||
|
||||
if (max != 0)
|
||||
franz.sat[i] = delta / max;
|
||||
else {
|
||||
// max val is 0, you have black
|
||||
franz.sat[i] = 0;
|
||||
franz.hue[i] = -1;
|
||||
return;
|
||||
}
|
||||
|
||||
if (franz.red[i] == max)
|
||||
franz.hue[i] = ( franz.green[i] - franz.blue[i]) / delta; //between yellow & magenta
|
||||
else if (franz.green[i] == max)
|
||||
franz.hue[i] = 2 + (franz.blue[i] - franz.red[i]) / delta; //between cyan & yellow
|
||||
else
|
||||
franz.hue[i] = 4 + (franz.red[i] - franz.green[i]) / delta; //between magenta & cyan
|
||||
|
||||
// hue degrees
|
||||
franz.hue[i] = franz.hue[i] * 60;
|
||||
if (franz.hue[i] < 0) franz.hue[i] += 360;
|
||||
}
|
||||
},
|
||||
|
||||
displayHue: function() {
|
||||
var docString = "";
|
||||
|
||||
/* keep track of original index so we don't have to revert
|
||||
back to RGB just to display output */
|
||||
for (var i=0; i < franz.alpha.length; i++) {
|
||||
franz.origIndex[i] = i;
|
||||
}
|
||||
|
||||
franz.qsort(franz.hue, 0, franz.hue.length);
|
||||
|
||||
for(var i = 0; i < franz.alpha.length; i++) {
|
||||
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>';
|
||||
}
|
||||
|
||||
document.getElementById("log_colors").innerHTML = docString;
|
||||
$("#container_bottom").fadeIn("slow");
|
||||
|
||||
return false;
|
||||
},
|
||||
|
||||
displaySat: function() {
|
||||
var docString = "";
|
||||
|
||||
/* keep track of original index so we don't have to revert
|
||||
back to RGB just to display output */
|
||||
for (var i=0; i < franz.alpha.length; i++) {
|
||||
franz.origIndex[i] = i;
|
||||
}
|
||||
|
||||
franz.qsort(franz.sat, 0, franz.sat.length);
|
||||
|
||||
for(var i = 0; i < franz.alpha.length; i++) {
|
||||
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>';
|
||||
}
|
||||
|
||||
document.getElementById("log_colors").innerHTML = docString;
|
||||
$("#container_bottom").fadeIn("slow");
|
||||
|
||||
return false;
|
||||
},
|
||||
|
||||
displayVal: function() {
|
||||
var docString = "";
|
||||
|
||||
/* keep track of original index so we don't have to revert
|
||||
back to RGB just to display output */
|
||||
for (var i=0; i < franz.alpha.length; i++) {
|
||||
franz.origIndex[i] = i;
|
||||
}
|
||||
|
||||
franz.qsort(franz.val, 0, franz.val.length);
|
||||
|
||||
for(var i = 0; i < franz.alpha.length; i++) {
|
||||
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>';
|
||||
}
|
||||
|
||||
document.getElementById("log_colors").innerHTML = docString;
|
||||
$("#container_bottom").fadeIn("slow");
|
||||
|
||||
return false;
|
||||
},
|
||||
|
||||
|
||||
/* quicksort algorithm with that also swaps original index */
|
||||
sort_Partition: function(array, begin, end, pivot) {
|
||||
var piv=array[pivot];
|
||||
array.swap(pivot, end-1);
|
||||
franz.origIndex.swap(pivot, end-1);
|
||||
var store=begin;
|
||||
var ix;
|
||||
for(ix=begin; ix<end-1; ++ix) {
|
||||
if(array[ix]<=piv) {
|
||||
array.swap(store, ix);
|
||||
franz.origIndex.swap(store, ix);
|
||||
++store;
|
||||
}
|
||||
}
|
||||
array.swap(end-1, store);
|
||||
franz.origIndex.swap(end-1, store);
|
||||
|
||||
return store;
|
||||
},
|
||||
|
||||
qsort: function(array, begin, end) {
|
||||
if(end-1>begin) {
|
||||
var pivot=begin+Math.floor(Math.random()*(end-begin));
|
||||
|
||||
pivot=franz.sort_Partition(array, begin, end, pivot);
|
||||
|
||||
franz.qsort(array, begin, pivot);
|
||||
franz.qsort(array, pivot+1, end);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/* define swap method for Array object */
|
||||
Array.prototype.swap=function(a, b)
|
||||
{
|
||||
var tmp=this[a];
|
||||
this[a]=this[b];
|
||||
this[b]=tmp;
|
||||
}
|
||||
|
|
|
|||
Reference in a new issue