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i,s=this.pixels.length,a=30+(this.samplefac-1)/3,e=s/(3*this.samplefac),n=e/this.ncycles|0,r=this.initalpha,h=this.initradius,o=h>>this.radiusbiasshift;o<=1&&(o=0);for(var f=0;f<o;f++)this.radpower[f]=r*((o*o-f*f)*this.radbias/(o*o));s<t?(this.samplefac=1,i=3):i=s%499!=0?1497:s%491!=0?1473:s%487!=0?1461:1509;for(var l=0,u=0;u<e;){var c=(255&this.pixels[l])<<this.netbiasshift,b=(255&this.pixels[l+1])<<this.netbiasshift,p=(255&this.pixels[l+2])<<this.netbiasshift,d=this.contest(c,b,p);if(this.altersingle(r,d,c,b,p),0!==o&&this.alterneigh(o,d,c,b,p),(l+=i)>=s&&(l-=s),0===n&&(n=1),++u%n==0){r-=r/a,(o=(h-=h/this.radiusdec)>>this.radiusbiasshift)<=1&&(o=0);for(var w=0;w<o;w++)this.radpower[w]=r*((o*o-w*w)*this.radbias/(o*o))}}},a.buildColorMap=function(){this.learn(),this.unbiasnet(),this.inxbuild()},a.getColorMap=function(){for(var t=new Buffer(3*this.netsize),i=new Buffer(this.netsize),s=0,a=this.netsize;s<a;s++)i[this.network[s][3]]=s;for(var 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