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@Nimlar
Created Jul 31, 2015
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/*global window, $ */
$(function () {
/** From
http://axonflux.com/handy-rgb-to-hsl-and-rgb-to-hsv-color-model-c
*/
/**
* Converts an HSL color value to RGB. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes h, s, and l are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
*
* @param Number h The hue
* @param Number s The saturation
* @param Number l The lightness
* @return Array The RGB representation
*/
function hslToRgb(h, s, l){
var r, g, b;
if(s == 0){
r = g = b = l; // achromatic
}else{
function hue2rgb(p, q, t){
if(t < 0) t += 1;
if(t > 1) t -= 1;
if(t < 1/6) return p + (q - p) * 6 * t;
if(t < 1/2) return q;
if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
return p;
}
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = hue2rgb(p, q, h + 1/3);
g = hue2rgb(p, q, h);
b = hue2rgb(p, q, h - 1/3);
}
return [r * 255, g * 255, b * 255];
}
/**
* Converts an HSV color value to RGB. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSV_color_space.
* Assumes h, s, and v are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
*
* @param Number h The hue
* @param Number s The saturation
* @param Number v The value
* @return Array The RGB representation
*/
function hsvToRgb(h, s, v){
var r, g, b;
var i = Math.floor(h * 6);
var f = h * 6 - i;
var p = v * (1 - s);
var q = v * (1 - f * s);
var t = v * (1 - (1 - f) * s);
switch(i % 6){
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
return [r * 255, g * 255, b * 255];
}
/**
* Returns a random integer between min (inclusive) and max (inclusive)
* Using Math.round() will give you a non-uniform distribution!
*/
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
$('#calculate').on('click', function (event) {
event.preventDefault();
var a=getRandomInt(0,255);
var b=getRandomInt(0,255);
var c=getRandomInt(0,255);
console.log([a, a*360/255]);
var rgb1=hslToRgb(a/255,b/255,c/255);
var rgb2=hsvToRgb(a/255,b/255,c/255);
var color = [];
//color.push({c:"#"+Math.floor(a).toString(16)+Math.floor(b).toString(16)+Math.floor(c).toString(16), i:"myrgb"});
color.push({c:"rgb(" + a + "," + b + "," + c + ")",i:"rgb"});
//color.push({c:"#"+Math.floor(rgb1[0]).toString(16)+Math.floor(rgb1[1]).toString(16)+Math.floor(rgb1[2]).toString(16),i:"myhsl"});
color.push({c:"hsl(" + a*360/255 + "," + b*100/255 + "%," + c*100/255 + "%)" ,i:"hsl f"});
color.push({c:"hsl(" + a*360/255 + "," + 50 + "%," + 50 + "%)",i:"hsl sl=fixe1"});
color.push({c:"hsl(" + a*360/255 + "," + 70 + "%," + 50 + "%)",i:"hsl sl=fixe1.1"});
color.push({c:"hsl(" + a*360/255 + "," + 50 + "%," + 30 + "%)",i:"hsl sl=fixe1.2"});
color.push({c:"hsl(" + a*360/255 + "," + 70 + "%," + 30 + "%)",i:"hsl sl=fixe1.3"});
//color.push({c:"hsl(" + (a+256*b)*360/(65536) + "," + 50 + "%," + 50 + "%)",i:"hsl sl=fixe2"});
//color.push({c:"#"+Math.floor(rgb2[0]).toString(16)+Math.floor(rgb2[1]).toString(16)+Math.floor(rgb2[2]).toString(16),i:"myhsv"});
var str='<tr>'
for (var i=0; i< color.length; i++) {
var str=str+'<td style="background-color:' + color[i].c + '">' +color[i].i + '</td><td>&nbsp</td>';
}
var str=str+"</tr>"
$('#list').append(str);
});
});
<html lang="en">
<head>
<meta charset="utf-8">
<title>Color Demo</title>
</head>
<body>
<h1>Color Demo</h1>
<button id="calculate">Calculate</button>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script src="demo.js"></script>
<table id="list">
</table>
</body>
</html>
@Nimlar
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Nimlar commented Jul 31, 2015

Try to generate different colors and human eye different color from random number.

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