source: other-projects/nz-flag-design/trunk/similarity-2d/js-lib/Colour.js@ 29627

//code.stephenmorley.org
function Colour(){this.getIntegerRGB=function(){var a=this.getRGB();return{r:Math.round(a.r),g:Math.round(a.g),b:Math.round(a.b),a:a.a}};this.getPercentageRGB=function(){var a=this.getRGB();return{r:100*a.r/255,g:100*a.g/255,b:100*a.b/255,a:a.a}};this.getCSSHexadecimalRGB=function(){var a=this.getIntegerRGB(),h=a.r.toString(16),k=a.g.toString(16),a=a.b.toString(16);return"#"+(2==h.length?h:"0"+h)+(2==k.length?k:"0"+k)+(2==a.length?a:"0"+a)};this.getCSSIntegerRGB=function(){var a=this.getIntegerRGB();return"rgb("+a.r+","+a.g+","+a.b+")"};this.getCSSIntegerRGBA=function(){var a=this.getIntegerRGB();return"rgba("+a.r+","+a.g+","+a.b+","+a.a+")"};this.getCSSPercentageRGB=function(){var a=this.getPercentageRGB();return"rgb("+a.r+"%,"+a.g+"%,"+a.b+"%)"};this.getCSSPercentageRGBA=function(){var a=this.getPercentageRGB();return"rgba("+a.r+"%,"+a.g+"%,"+a.b+"%,"+a.a+")"};this.getCSSHSL=function(){var a=this.getHSL();return"hsl("+a.h+","+a.s+"%,"+a.l+"%)"};this.getCSSHSLA=function(){var a=this.getHSL();return"hsla("+a.h+","+a.s+"%,"+a.l+"%,"+a.a+")"};this.setNodeColour=function(a){a.style.color=this.getCSSHexadecimalRGB()};this.setNodeBackgroundColour=function(a){a.style.backgroundColor=this.getCSSHexadecimalRGB()}}RGBColour.prototype=new Colour;function RGBColour(a,h,k,n){function m(a,b){if(0==b)var d=0;else switch(a){case c.r:d=(c.g-c.b)/b*60;0>d&&(d+=360);break;case c.g:d=(c.b-c.r)/b*60+120;break;case c.b:d=(c.r-c.g)/b*60+240}return d}var l=void 0===n?1:Math.max(0,Math.min(1,n)),c={r:Math.max(0,Math.min(255,a)),g:Math.max(0,Math.min(255,h)),b:Math.max(0,Math.min(255,k))},b=null,d=null;this.getRGB=function(){return{r:c.r,g:c.g,b:c.b,a:l}};this.getHSV=function(){if(null==b){var a=Math.max(c.r,c.g,c.b),d=a-Math.min(c.r,c.g,c.b);b={h:m(a,d),s:0==a?0:100*d/a,v:a/2.55}}return{h:b.h,s:b.s,v:b.v,a:l}};this.getHSL=function(){if(null==d){var a=Math.max(c.r,c.g,c.b),b=a-Math.min(c.r,c.g,c.b),f=a/255-b/510;d={h:m(a,b),s:0==b?0:b/2.55/(.5>f?2*f:2-2*f),l:100*f}}return{h:d.h,s:d.s,l:d.l,a:l}}}HSVColour.prototype=new Colour;function HSVColour(a,h,k,n){var m=void 0===n?1:Math.max(0,Math.min(1,n)),l=(a%360+360)%360,c=Math.max(0,Math.min(100,h)),b=Math.max(0,Math.min(100,k)),d=null,e=null;this.getRGB=function(){if(null==d){if(0==c)var a=b,f=b,g=b;else{var e=l/60-Math.floor(l/60),h=b*(1-c/100),k=b*(1-c/100*e),e=b*(1-c/100*(1-e));switch(Math.floor(l/60)){case 0:a=b;f=e;g=h;break;case 1:a=k;f=b;g=h;break;case 2:a=h;f=b;g=e;break;case 3:a=h;f=k;g=b;break;case 4:a=e;f=h;g=b;break;case 5:a=b,f=h,g=k}}d={r:2.55*a,g:2.55*f,b:2.55*g}}return{r:d.r,g:d.g,b:d.b,a:m}};this.getHSV=function(){return{h:l,s:c,v:b,a:m}};this.getHSL=function(){if(null==e){var a=(2-c/100)*b/2;e={h:l,s:c*b/(50>a?2*a:200-2*a),l:a};isNaN(e.s)&&(e.s=0)}return{h:e.h,s:e.s,l:e.l,a:m}}}HSLColour.prototype=new Colour;function HSLColour(a,h,k,n){var m=void 0===n?1:Math.max(0,Math.min(1,n)),l=(a%360+360)%360,c=Math.max(0,Math.min(100,h)),b=Math.max(0,Math.min(100,k)),d=null,e=null;this.getRGB=function(){if(null==d)if(0==c)d={r:2.55*b,g:2.55*b,b:2.55*b};else{var e=50>b?b*(1+c/100):b+c-b*c/100,f=2*b-e;d={r:(a+120)/60%6,g:a/60,b:(a+240)/60%6};for(var g in d)d.hasOwnProperty(g)&&(d[g]=1>d[g]?f+(e-f)*d[g]:3>d[g]?e:4>d[g]?f+(e-f)*(4-d[g]):f,d[g]*=2.55)}return{r:d.r,g:d.g,b:d.b,a:m}};this.getHSV=function(){if(null==e){var a=c*(50>b?b:100-b)/100;e={h:l,s:200*a/(b+a),v:a+b};isNaN(e.s)&&(e.s=0)}return{h:e.h,s:e.s,v:e.v,a:m}};this.getHSL=function(){return{h:l,s:c,l:b,a:m}}};