JS1k: The JavaScript code golfing competition

a="d#ocumt;c#.getElemtById('c'Ub=c.getContext('2d'Uf=10;c.wid=g=c.height=j=500;k=[Ml=[Mq=hH;r=o=1;D_5V<fV++,y_8Qz=[MDiH,_5J<fJ++,x_8Qz]={x:x,y:y:1,k:x,j:y}h>0Qpush([h,h])}(i>0?push([h,h]):0)@k[0][0]S=k[0][9]SH;nAclearRect(0,0,g,jUKffp=z]pwi(pQnx*1~-k*~;ny*1~-j*~+(_0125*rUk=x;j=y;nx;ny@@K2lga=lMs
01t
23dtW-sW`tZ-sZ`e#x+dy`i=(de-_064)/((de+_064)*(sS+tS))ssW+#i;sZ+#i}i&ttWNi;tZNi@}Olga=lMbeginPa(Us
01t
23!To(sW*g,sZ*jUlineTo(tW*g,tZ*jUstro()@;setInterval(n,35UFdownAw=f;Kffp=zMdxLX/g-pW`yLY/j-pZ;nw#x+dynw<wQw=nw=p@}F!AqW=q.kLX/gZ=q.jLY/jSH};FupAF!=nullS=o};}`.onydownAi&e.yCode==71Qr=(r=H)?1:0}oH}`.onyupAo=1}";for(b in c="VGO;qkeyNxN]MJG-1l.J&x=+=y=en!moveS!HQb.,i[ithKDhHV<]]K
=kK~.99`;d@}}&f(#=d_.0zk[h]Z.yW.xV;hU);S.iQ){ODiHJ<N*dM];L=e.pageK[a[J;iH=0G++){Fd.onmouseDfor(A=function(e){".split(""))a=a.replace(RegExp(c[b][0],"g"),c[b].slice(1));eval(a)

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

http://www.andrew-hoyer.com/experiments/cloth

d = document;
c = d.getElementById('c');
b = c.getContext('2d');
f = 10; //number of k (sq_rt)
c.width = g = window.innerWidth - 25;
c.height = j = window.innerHeight - 25;
k=[]; //double array [y][x]
l=[];
q=0;
r=.00125;
o=1;
for(h=0, y=.05;h<f;h++,y+=.08) {
    k[h]=[];
    for(i=0,x=.05;i<f;i++, x+=.08) {
        k[h][i]={x:x,y:y,i:1,k:x,j:y};
        if(h>0){
            l.push([h-1,i,h,i]);
        }
        //add a new horizontal l
        if(i>0){
            l.push([h,i-1,h,i]);
        }
    }
}
k[0][0].i=0;
k[0][9].i=0;

function n() {
    b.clearRect(0, 0, g, j);
    for(h=0;h<f;h++) {
        for(i=0;i<f;i++) {
            p=k[h][i];
            if(p.i!=0){
            nx=p.x*2-p.k;
            ny=p.y*2-p.j+r;

                p.k=p.x;
                p.j=p.y;
                p.x=nx;
                p.y=ny;
            }
            //k[h][i]=p;
        }
    }
    for(h=0;h<2;h++) { //17
        for(i=0;i<l.length;i++) {
            a=l[i];
            s=k[a[0]][a[1]];
            t=k[a[2]][a[3]];
            dx=t.x-s.x;
            dy=t.y-s.y;
            de=dx*dx+dy*dy;
            di=(de-.0064)/((.0064+de)*(s.i+t.i));
            if(s.i!=0) {
                s.x+=dx*di;
                s.y+=dy*di;
            }
            if(t.i!=0) {
                t.x-=dx*di;
                t.y-=dy*di;
            }
        }
    }
    for(i=0;i<l.length;i++) {
        a=l[i];
        b.beginPath();
       // b.strokeStyle = "#000";
       s=k[a[0]][a[1]];
       t=k[a[2]][a[3]];
        b.moveTo(s.x*g,s.y*j);
        b.lineTo(t.x*g,t.y*j);
        b.stroke();
    }
}

//r();

setInterval(n, 35)
z="onmouse";
v=z+"move";
d[z+"down"] = function(e) {
	w=f;
	for(h=0;h<f;h++) {
		for(i=0;i<f;i++) {
			p=k[h][i];
			dx=e.pageX/g-p.x;
			dy=e.pageY/j-p.y;
			nw=dx*dx+dy*dy;
			if(nw<w) {
				w=nw;
				q=p;
			}
		}
	}
	d[v]=function(e) {
			q.x=q.k=e.pageX/g;
			q.y=q.j=e.pageY/j;
			q.i=0;
	}
		d[z+"up"]=function(){
		d[v]=null;
		q.i=o;
		}
}
d.onkeydown=function(e) {
	if(e.keyCode==71) {
		r=(r==0)?.00125:0;
	}
	o=0;
};
d.onkeyup=function() {
	o=1;
}