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# Nimlar/demo.js

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='
' +color[i].i + '
' for (var i=0; i< color.length; i++) { var str=str+''; } var str=str+"" \$('#list').append(str); }); });
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 Color Demo

Color Demo

### Nimlar commented Jul 31, 2015

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