function Colour(){this.colour=[0,0,0];this.CSS3={"aliceblue":"f0f8ff","antiquewhite":"faebd7","aqua":"00ffff","aquamarine":"7fffd4","azure":"f0ffff","beige":"f5f5dc","bisque":"ffe4c4","black":"000000","blanchedalmond":"ffebcd","blue":"0000ff","blueviolet":"8a2be2","brown":"a52a2a","burlywood":"deb887","cadetblue":"5f9ea0","chartreuse":"7fff00","chocolate":"d2691e","coral":"ff7f50","cornflowerblue":"6495ed","cornsilk":"fff8dc","crimson":"dc143c","cyan":"00ffff","darkblue":"00008b","darkcyan":"008b8b","darkgoldenrod":"b8860b","darkgray":"a9a9a9","darkgreen":"006400","darkgrey":"a9a9a9","darkkhaki":"bdb76b","darkmagenta":"8b008b","darkolivegreen":"556b2f","darkorange":"ff8c00","darkorchid":"9932cc","darkred":"8b0000","darksalmon":"e9967a","darkseagreen":"8fbc8f","darkslateblue":"483d8b","darkslategray":"2f4f4f","darkslategrey":"2f4f4f","darkturquoise":"00ced1","darkviolet":"9400d3","deeppink":"ff1493","deepskyblue":"00bfff","dimgray":"696969","dimgrey":"696969","dodgerblue":"1e90ff","firebrick":"b22222","floralwhite":"fffaf0","forestgreen":"228b22","fuchsia":"ff00ff","gainsboro":"dcdcdc","ghostwhite":"f8f8ff","gold":"ffd700","goldenrod":"daa520","gray":"808080","green":"008000","greenyellow":"adff2f","grey":"808080","honeydew":"f0fff0","hotpink":"ff69b4","indianred":"cd5c5c","indigo":"4b0082","ivory":"fffff0","khaki":"f0e68c","lavender":"e6e6fa","lavenderblush":"fff0f5","lawngreen":"7cfc00","lemonchiffon":"fffacd","lightblue":"add8e6","lightcoral":"f08080","lightcyan":"e0ffff","lightgoldenrodyellow":"fafad2","lightgray":"d3d3d3","lightgreen":"90ee90","lightgrey":"d3d3d3","lightpink":"ffb6c1","lightsalmon":"ffa07a","lightseagreen":"20b2aa","lightskyblue":"87cefa","lightslategray":"778899","lightslategrey":"778899","lightsteelblue":"b0c4de","lightyellow":"ffffe0","lime":"00ff00","limegreen":"32cd32","linen":"faf0e6","magenta":"ff00ff","maroon":"800000","mediumaquamarine":"66cdaa","mediumblue":"0000cd","mediumorchid":"ba55d3","mediumpurple":"9370db","mediumseagreen":"3cb371","mediumslateblue":"7b68ee","mediumspringgreen":"00fa9a","mediumturquoise":"48d1cc","mediumvioletred":"c71585","midnightblue":"191970","mintcream":"f5fffa","mistyrose":"ffe4e1","moccasin":"ffe4b5","navajowhite":"ffdead","navy":"000080","oldlace":"fdf5e6","olive":"808000","olivedrab":"6b8e23","orange":"ffa500","orangered":"ff4500","orchid":"da70d6","palegoldenrod":"eee8aa","palegreen":"98fb98","paleturquoise":"afeeee","palevioletred":"db7093","papayawhip":"ffefd5","peachpuff":"ffdab9","peru":"cd853f","pink":"ffc0cb","plum":"dda0dd","powderblue":"b0e0e6","purple":"800080","red":"ff0000","rosybrown":"bc8f8f","royalblue":"4169e1","saddlebrown":"8b4513","salmon":"fa8072","sandybrown":"f4a460","seagreen":"2e8b57","seashell":"fff5ee","sienna":"a0522d","silver":"c0c0c0","skyblue":"87ceeb","slateblue":"6a5acd","slategray":"708090","slategrey":"708090","snow":"fffafa","springgreen":"00ff7f","steelblue":"4682b4","tan":"d2b48c","teal":"008080","thistle":"d8bfd8","tomato":"ff6347","turquoise":"40e0d0","violet":"ee82ee","wheat":"f5deb3","white":"ffffff","whitesmoke":"f5f5f5","yellow":"ffff00","yellowgreen":"9acd32"};this.rgb=function(){switch(arguments.length){case 0:return this.colour;case 1:var rgb=arguments[0];break;case 3:var rgb=arguments;break;default:console.error("expected zero, one (array) or three arguments");}
this.colour=this.normalizergb(rgb);return this;}
this.rgb255=function(){switch(arguments.length){case 0:return[this.to255(this.colour[0]),this.to255(this.colour[1]),this.to255(this.colour[2])];case 1:var rgb=arguments[0];break;case 3:var rgb=arguments;break;default:console.error("expected zero, one (array) or three arguments");}
return this.rgb(rgb[0]/255,rgb[1]/255,rgb[2]/255);}
this.rgb100=function(){switch(arguments.length){case 0:return array_map(array("self","to100"),this.colour);case 1:var rgb=arguments[0];break;case 3:var rgb=arguments;break;default:console.error("expected zero, one (array) or three arguments");}
return this.rgb(rgb[0]/100,rgb[1]/100,rgb[2]/100);}
this.r=function(arg){return this.r_g_b(0,arg);}
this.g=function(arg){return this.r_g_b(1,arg);}
this.b=function(arg){return this.r_g_b(2,arg);}
this.red=function(arg){return this.r(arg);}
this.green=function(arg){return this.g(arg);}
this.blue=function(arg){return this.b(arg);}
this.r_g_b=function(index,arg){if(typeof(arg)=="undefined")return this.colour[index];this.colour[index]=this.normalize01(arg);return this;}
this.hsv=function(){switch(arguments.length){case 0:return this.rgbtohsv(this.colour);case 1:var hsv=arguments[0];break;case 3:var hsv=arguments;break;default:console.error("expected zero, one (array) or three arguments");}
return this.rgb(this.hsvtorgb(hsv));}
this.hsv100=function(){switch(arguments.length){case 0:var hsv=this.rgbtohsv(this.colour);return[Math.round(this.normalizehue(hsv[0])),this.to100(hsv[1]),this.to100(hsv[2])];case 1:var hsv=arguments[0];break;case 3:var hsv=arguments;break;default:console.error("expected zero, one (array) or three arguments");}
return this.hsv(hsv[0],hsv[1]/100,hsv[2]/100);}
this.hex=function(){switch(arguments.length){case 0:return this.rgbtohex(this.colour);case 1:if(typeof(arguments[0])=="string"){if(!this.validhex(arguments[0])){console.error("invalid hex string");return;}
return this.rgb(this.hextorgb(arguments[0]));}
return this.rgbtohex(this.colour,arguments[0]);default:console.error("expected zero or one argument");}}
this.gr=function(l){if(typeof(l)=="undefined")l=0.5;l=this.normalize01(l);return this.rgb(l,l,l);}
this.grey=function(){return this.gr.apply(this,arguments);}
this.gray=function(){return this.gr.apply(this,arguments);}
this.h=function(){var hsv=this.hsv();switch(arguments.length){case 0:return hsv[0];case 1:var h=arguments[0];var newobj=true;break;case 2:var h=arguments[0];var newobj=arguments[1];break;default:console.error("expected zero, one or two arguments");}
h=this.normalizehue(h);if(h==hsv[0])return newobj?new Colour(this):this;return newobj?new Colour().hsv(h,hsv[1],hsv[2]):this.hsv(h,hsv[1],hsv[2]);}
this.hue=function(){return this.h.apply(this,arguments);}
this.s=function(){var hsv=this.hsv();switch(arguments.length){case 0:return hsv[1];case 1:var s=arguments[0];var newobj=true;break;case 2:var s=arguments[0];var newobj=arguments[1];break;default:console.error("expected zero, one or two arguments");}
if(s==hsv[1])return newobj?new Colour(this):this;return newobj?new Colour().hsv(hsv[0],s,hsv[2]):this.hsv(hsv[0],s,hsv[2]);}
this.saturation=function(){return this.s.apply(this,arguments);}
this.desaturate=function(){if(arguments.length>0)return this.s(0,arguments[0]);return this.s(0);}
this.v=function(){var hsv=this.hsv();switch(arguments.length){case 0:return hsv[1];case 1:var v=arguments[0];var newobj=true;break;case 2:var v=arguments[0];var newobj=arguments[1];break;default:console.error("expected zero, one or two arguments");}
if(v==hsv[2])return newobj?new Colour(this):this;return newobj?new Colour().hsv(hsv[0],hsv[1],v):this.hsv(hsv[0],hsv[1],v);}
this.value=function(){return this.v.apply(this,arguments);}
this.shade=function(){var l=arguments[0];var newobj=arguments.length>1?arguments[1]:true;if(typeof(l)!="undefined"&&(l==0||l==1)){return newobj?new Colour(l):this.grey(l);}
var rgb=this.rgb();var i=(rgb[0]+rgb[1]+rgb[2])/3;if(typeof(l)=="undefined")return i;if(i==l){return newobj?new Colour(this):this;}
var diff=l-i;if(diff>0){var scale=diff/(1-i);}else{var scale=diff/i;}
return this.shiftshade(scale,newobj);}
this.sh=function(){return this.shade.apply(this,arguments);}
this.shifthue=function(){var hsv=this.hsv();if(arguments.length>1)return this.h(hsv[0]+arguments[0],arguments[1]);return this.h(hsv[0]+arguments[0]);}
this.shh=function(){return this.shifthue.apply(this,arguments);}
this.shiftsaturation=function(){var scale=arguments[0];var newobj=arguments.length>1?arguments[1]:true;if(scale==0){return newobj?new Colour(this):this;}
var hsv=this.hsv();if(scale>0){var s=hsv[1]+(1-hsv[1])*scale;}else{var s=hsv[1]*(scale+1);}
return newobj?new Colour().hsv(hsv[0],s,hsv[2]):this.hsv(hsv[0],s,hsv[2]);}
this.shs=function(){return this.shiftsaturation.apply(this,arguments);}
this.shiftvalue=function(){var scale=arguments[0];var newobj=arguments.length>1?arguments[1]:true;if(scale==0){return newobj?new Colour(this):this;}
var hsv=this.hsv();if(scale>0){var v=hsv[2]+(1-hsv[2])*scale;}else{var v=hsv[2]*(scale+1);}
return newobj?new Colour().hsv(hsv[0],hsv[1],v):this.hsv(hsv[0],hsv[1],v);}
this.shv=function(){return this.shiftvalue.apply(this,arguments);}
this.shiftshade=function(){var scale=arguments[0];var newobj=arguments.length>1?arguments[1]:true;if(scale==0){return newobj?new Colour(this):this;}
if(scale==1||arguments[0]==-1){return newobj?new Colour(scale/2+0.5):this.grey(arguments[0]/2+0.5);}
if(scale>0){return this.mix(new Colour(1),scale,newobj);}else{return this.mix(new Colour(0),-scale,newobj);}}
this.shsh=function(){return this.shiftshade.apply(this,arguments);}
this.halfsat=function(){if(arguments.length==2&&typeof(arguments[1])!="boolean"){var h=arguments[0];var v=arguments[1];var newobj=true;}else{var h=this.h();var v=arguments[0];var newobj=arguments.length==2?arguments[1]:true;}
var hsv=[h,0.5-v/2,v];return newobj?new Colour().hsv(hsv):this.hsv(hsv);}
this.hs=function(){return this.halfsat.apply(this,arguments);}
this.mix=function(){var c=arguments[0].rgb();var mix=arguments.length>1?arguments[1]:0.5;var newobj=arguments.length>2?arguments[2]:true;var rgb=this.rgb();var newrgb=[rgb[0]+(c[0]-rgb[0])*mix,rgb[1]+(c[1]-rgb[1])*mix,rgb[2]+(c[2]-rgb[2])*mix];return newobj?new Colour(newrgb):this.rgb(newrgb);}
this.xarashade=function(){var xs=arguments[0];var xv=arguments[1];var newobj=arguments.length>2?arguments[2]:true;return this.shiftvalue(xv/100,newobj).shiftsaturation(-xs/100,false);}
this.xs=function(){return this.xarashade.apply(this,arguments);}
this.swatch=function(){var showhex=arguments.length>0?arguments[0]:true;var cssclass=arguments.length>1?arguments[1]:"";var html="<span class=\"swatch";if(cssclass!="")html+=" "+cssclass;html+="\" style=\"";if(cssclass=="")html+="font-family: monospace; padding: 0.3em 0.8em; ";html+="background-color: "+this.hex()+"; color: "+(this.shade()>0.5?"black":"white")+"\">";html+=showhex?this.hex():"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";html+="</span>";return html;}
this.rgburl=function(){var forhtml=arguments.length>0?arguments[0]:false;var string="r="+this.r()+"&g="+this.g()+"&b="+this.b();if(forhtml)return string.replace(/&/g,"&amp;");return string;}
this.hsvtorgb=function(){switch(arguments.length){case 1:var hsv=arguments[0];break;case 3:var hsv=arguments;break;default:console.error("expected one or three arguments");}
hsv=this.normalizehsv(hsv);var h=hsv[0];var s=hsv[1];var v=hsv[2];if(h===false||s==0){return[v,v,v];}
h/=60;var i=Math.floor(h);var f=h-i;var p=v*(1-s);var q=v*(1-s*f);var t=v*(1-s*(1-f));var r,g,b;switch(i){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;default:r=v;g=p;b=q;break;}
return[r,g,b];}
this.rgbtohsv=function(){switch(arguments.length){case 1:var rgb=arguments[0];break;case 3:var rgb=arguments;break;default:console.error("expected one or three arguments");}
rgb=this.normalizergb(rgb);var r=rgb[0];var g=rgb[1];var b=rgb[2];var v=r;if(g>v)v=g;if(b>v)v=b;var min=r;if(g<min)min=g;if(b<min)min=b;var delta=v-min;if(v==0||delta==0){return[null,0,v];}
var s=delta/v;if(r>=g&&r>=b){var h=(g-b)/delta;}else if(g>=r&&g>=b){var h=2+(b-r)/delta;}else{var h=4+(r-g)/delta;}
h*=60;h=this.normalizehue(h);return[h,s,v];}
this.hextorgb=function(hex){if(hex[0]=="#"){hex=hex.substr(1);}
if(hex.length==3){hex=hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2];}
var r=parseInt(hex.substr(0,2),16);var g=parseInt(hex.substr(2,2),16);var b=parseInt(hex.substr(4,2),16);return[r/255,g/255,b/255];}
this.rgbtohex=function(){switch(arguments.length){case 1:case 2:var rgb=arguments[0];var hash=arguments.length>1?arguments[1]:true;break;case 3:case 4:var rgb=[arguments[0],arguments[1],arguments[2]];var hash=arguments.length==4?arguments[3]:true;break;default:console.error("expected one, two, three or four arguments");}
rgb=this.normalizergb(rgb);rgb[0]=this.to255(rgb[0]).toString(16);rgb[1]=this.to255(rgb[1]).toString(16);rgb[2]=this.to255(rgb[2]).toString(16);if(rgb[0].length<2)rgb[0]="0"+rgb[0];if(rgb[1].length<2)rgb[1]="0"+rgb[1];if(rgb[2].length<2)rgb[2]="0"+rgb[2];return(hash?"#":"")+rgb[0]+rgb[1]+rgb[2];}
this.validhex=function(string){return typeof(string)=="string"&&/^#?([0-9a-fA-F]{3}){1,2}$/.test(string);}
this.normalizergb=function(rgb){if(rgb.length!=3){console.warn("array should have three values -- setting any missing ones to zero");}
return[typeof(rgb[0])!="undefined"?this.normalize01(rgb[0]):0,typeof(rgb[1])!="undefined"?this.normalize01(rgb[1]):0,typeof(rgb[2])!="undefined"?this.normalize01(rgb[2]):0];}
this.normalizehsv=function(hsv){if(hsv.length!=3){console.warn("array should have three values -- setting any missing ones to false (hue) or zero (otherwise)");}
var ret=[typeof(hsv[0])!="undefined"?this.normalizehue(hsv[0]):false,typeof(hsv[1])!="undefined"?this.normalize01(hsv[1]):0,typeof(hsv[2])!="undefined"?this.normalize01(hsv[2]):0];if(ret[1]==0)ret[0]=false;return ret;}
this.normalizehue=function(h){if(h===false)return h;while(h<0)h+=360;while(h>=360)h-=360;return h;}
this.normalize01=function(f){if(f<0||f>1){console.warn("value out of range");if(f<0){f=0;}else{f=1;}}
return f;}
this.to255=function(f){f=this.normalize01(f);return Math.round(f*255);}
this.to100=function(f){f=this.normalize01(f);return Math.round(f*100);}
switch(arguments.length){case 0:return this.gr(0);case 1:arg=arguments[0];if(typeof(arg)=="object"&&arg.length==3){return this.rgb(arg);}
if(typeof(arg)=="object"&&typeof(arg.CSS3)=="object"){return this.rgb(arg.rgb());}
if(typeof(arg)=="number"){return this.gr(arg);}
if(this.validhex(arg)){return this.hex(arg);}
if(typeof(arg)=="string"&&typeof(eval("this.CSS3."+arg.toLowerCase()))!="undefined"&&this.validhex(eval("this.CSS3."+arg.toLowerCase()))){return this.hex(eval("this.CSS3."+arg.toLowerCase()));}
console.warn("unrecognized constructor option");return this.gr(0);default:console.error("expected zero or one argument");return false;}};