/*

Colour.js

Functions for colour handling and processing.

http://www.safalra.com/web-design/javascript/colour-handling-and-processing/

The author of this program, Safalra (Stephen Morley), irrevocably releases all
rights to this program, with the intention of it becoming part of the public
domain. Because this program is released into the public domain, it comes with
no warranty either expressed or implied, to the extent permitted by law.

For more free and public domain JavaScript code by the same author, visit:
http://www.safalra.com/web-design/javascript/

*/

function Colour(){this.getIntegerRGB=function(){var _1=this.getRGB();return {"r":Math.round(_1.r),"g":Math.round(_1.g),"b":Math.round(_1.b),"a":_1.a};};this.getPercentageRGB=function(){var _2=this.getRGB();return {"r":100*_2.r/255,"g":100*_2.g/255,"b":100*_2.b/255,"a":_2.a};};this.getCSSHexadecimalRGB=function(){var _3=this.getIntegerRGB();var _4=_3.r.toString(16);var _5=_3.g.toString(16);var _6=_3.b.toString(16);return "#"+(_4.length==2?_4:"0"+_4)+(_5.length==2?_5:"0"+_5)+(_6.length==2?_6:"0"+_6);};this.getCSSIntegerRGB=function(){var _7=this.getIntegerRGB();return "rgb("+_7.r+","+_7.g+","+_7.b+")";};this.getCSSIntegerRGBA=function(){var _8=this.getIntegerRGB();return "rgb("+_8.r+","+_8.g+","+_8.b+","+_8.a+")";};this.getCSSPercentageRGB=function(){var _9=this.getPercentageRGB();return "rgb("+_9.r+"%,"+_9.g+"%,"+_9.b+"%)";};this.getCSSPercentageRGBA=function(){var _a=this.getPercentageRGB();return "rgb("+_a.r+"%,"+_a.g+"%,"+_a.b+"%,"+_a.a+")";};this.getCSSHSL=function(){var _b=this.getHSL();return "hsl("+_b.h+","+_b.s+"%,"+_b.l+"%)";};this.getCSSHSLA=function(){var _c=this.getHSL();return "hsl("+_c.h+","+_c.s+"%,"+_c.l+"%,"+_c.a+")";};this.setNodeColour=function(_d){_d.style.color=this.getCSSHexadecimalRGB();};this.setNodeBackgroundColour=function(_e){_e.style.backgroundColor=this.getCSSHexadecimalRGB();};}RGBColour.prototype=new Colour();function RGBColour(r,g,b,a){var _13=(a===undefined?1:Math.max(0,Math.min(1,a)));var rgb={"r":Math.max(0,Math.min(255,r)),"g":Math.max(0,Math.min(255,g)),"b":Math.max(0,Math.min(255,b))};var hsv=null;var hsl=null;function getHue(_17,_18){if(_18==0){var hue=0;}else{switch(_17){case rgb.r:var hue=(rgb.g-rgb.b)/_18*60;if(hue<0){hue+=360;}break;case rgb.g:var hue=(rgb.b-rgb.r)/_18*60+120;break;case rgb.b:var hue=(rgb.r-rgb.g)/_18*60+240;break;}}return hue;}function calculateHSV(){var _1d=Math.max(rgb.r,rgb.g,rgb.b);var _1e=_1d-Math.min(rgb.r,rgb.g,rgb.b);hsv={"h":getHue(_1d,_1e),"s":(_1d==0?0:100*_1e/_1d),"v":_1d/2.55};}function calculateHSL(){var _1f=Math.max(rgb.r,rgb.g,rgb.b);var _20=_1f-Math.min(rgb.r,rgb.g,rgb.b);var l=_1f/255-_20/510;hsl={"h":getHue(_1f,_20),"s":(_20==0?0:_20/2.55/(l<0.5?l*2:2-l*2)),"l":100*l};}this.getRGB=function(){return {"r":rgb.r,"g":rgb.g,"b":rgb.b,"a":_13};};this.getHSV=function(){if(hsv==null){calculateHSV();}return {"h":hsv.h,"s":hsv.s,"v":hsv.v,"a":_13};};this.getHSL=function(){if(hsl==null){calculateHSL();}return {"h":hsl.h,"s":hsl.s,"l":hsl.l,"a":_13};};}HSVColour.prototype=new Colour();function HSVColour(h,s,v,a){var _26=(a===undefined?1:Math.max(0,Math.min(1,a)));var hsv={"h":(h%360+360)%360,"s":Math.max(0,Math.min(100,s)),"v":Math.max(0,Math.min(100,v))};var rgb=null;var hsl=null;function calculateRGB(){if(hsv.s==0){var r=hsv.v;var g=hsv.v;var b=hsv.v;}else{var f=hsv.h/60-Math.floor(hsv.h/60);var p=hsv.v*(1-hsv.s/100);var q=hsv.v*(1-hsv.s/100*f);var t=hsv.v*(1-hsv.s/100*(1-f));switch(Math.floor(hsv.h/60)){case 0:var r=hsv.v;var g=t;var b=p;break;case 1:var r=q;var g=hsv.v;var b=p;break;case 2:var r=p;var g=hsv.v;var b=t;break;case 3:var r=p;var g=q;var b=hsv.v;break;case 4:var r=t;var g=p;var b=hsv.v;break;case 5:var r=hsv.v;var g=p;var b=q;break;}}rgb={"r":r*2.55,"g":g*2.55,"b":b*2.55};}function calculateHSL(){var l=(2-hsv.s/100)*hsv.v/2;hsl={"h":hsv.h,"s":hsv.s*hsv.v/(l<50?l*2:200-l*2),"l":l};if(isNaN(hsl.s)){hsl.s=0;}}this.getRGB=function(){if(rgb==null){calculateRGB();}return {"r":rgb.r,"g":rgb.g,"b":rgb.b,"a":_26};};this.getHSV=function(){return {"h":hsv.h,"s":hsv.s,"v":hsv.v,"a":_26};};this.getHSL=function(){if(hsl==null){calculateHSL();}return {"h":hsl.h,"s":hsl.s,"l":hsl.l,"a":_26};};}HSLColour.prototype=new Colour();function HSLColour(h,s,l,a){var _48=(a===undefined?1:Math.max(0,Math.min(1,a)));var hsl={"h":(h%360+360)%360,"s":Math.max(0,Math.min(100,s)),"l":Math.max(0,Math.min(100,l))};var rgb=null;var hsv=null;function calculateRGB(){if(hsl.s==0){rgb={"r":hsl.l*2.55,"g":hsl.l*2.55,"b":hsl.l*2.55};}else{var p=hsl.l<50?hsl.l*(1+hsl.s/100):hsl.l+hsl.s-hsl.l*hsl.s/100;var q=2*hsl.l-p;rgb={"r":(h+120)/60%6,"g":h/60,"b":(h+240)/60%6};for(var key in rgb){if(rgb.hasOwnProperty(key)){if(rgb[key]<1){rgb[key]=q+(p-q)*rgb[key];}else{if(rgb[key]<3){rgb[key]=p;}else{if(rgb[key]<4){rgb[key]=q+(p-q)*(4-rgb[key]);}else{rgb[key]=q;}}}rgb[key]*=2.55;}}}}function calculateHSV(){var t=hsl.s*(hsl.l<50?hsl.l:100-hsl.l)/100;hsv={"h":hsl.h,"s":200*t/(hsl.l+t),"v":t+hsl.l};if(isNaN(hsv.s)){hsv.s=0;}}this.getRGB=function(){if(rgb==null){calculateRGB();}return {"r":rgb.r,"g":rgb.g,"b":rgb.b,"a":_48};};this.getHSV=function(){if(hsv==null){calculateHSV();}return {"h":hsv.h,"s":hsv.s,"v":hsv.v,"a":_48};};this.getHSL=function(){return {"h":hsl.h,"s":hsl.s,"l":hsl.l,"a":_48};};}