Draw-1024

var d=1024,
s=3/(y+99),
p=(y+Math.sin((x*x+(y-700)^2)/100/d)*35)*s;
r=(parseInt((x+d)*s+p)%2+parseInt((d*2-x)*s+p)%2)*127;
g=(parseInt(5*((x+d)*s+p))%2+parseInt(5*((d*2-x)*s+p))%2)*127;
b=(parseInt(5*((x+d)*s+p))%2+parseInt(29*((d*2-x)*s+p))%2)*127;
                

if(x==0&&y==0){kr=kg=kb=0;}
var l;
kr+=Math.random();
l=parseInt(kr)%512;
r=l>255?511-l:l;
kg+=Math.random();
l=parseInt(kg)%512;
g=l>255?511-l:l;
kb+=Math.random();
l=parseInt(kb)%512;
b=l>255?511-l:l;
                

var a=0,b=0,d,n=0;
for(;a*a+(d=b*b)<4&&n++<8192;b=2*a*b+y/5e4+.06,a=a*a-d+x/5e4+.34);
r=n/4;
g=2*r;
b=4*r;
                

var a=0,b=0,n=0,c,d,f=8e-9;
while((c=a*a)+(d=b*b)<4&&n++<880){b=2*a*b+y*f-.645411;a=c-d+x*f+.356888;}
r=255*Math.pow((n-80)/800,3);
g=255*Math.pow((n-80)/800,.7);
b=255*Math.pow((n-80)/800,.5);
                

if(typeof f_c=="undefined"){f_c=function(x,y,px,py,r){return Math.sqrt(Math.pow(x-px,2)+Math.pow(y-py,2))<=r;}}

var x0=x-512,y0=512-y;
r=g=b=127;

if(f_c(x0,y0,0,0,256)){r=g=b=(x0>0)?0:255;}

if(f_c(x0,y0,0,128,128)&&x0>0){r=g=b=255;}
if(f_c(x0,y0,0,-128,128)&&x0<=0){r=g=b=0;}

if(f_c(x0,y0,0,128,32)){r=g=b=0;}
if(f_c(x0,y0,0,-128,32)){r=g=b=255;}