d3.geom.min.js

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m&&j[i]!=h;++i);j.splice(i,1)},empty:function(){return b.list.length==0},nextEvent:function(h){for(var i=0,j=b.list,m=j.length;i<m;++i)if(j[i]==h)return j[i+1];return null},min:function(){var h=b.list[0];return{x:h.vertex.x,y:h.ystar}},extractMin:function(){return b.list.shift()}};a.init();d.bottomSite=d.list.shift();for(var e=d.list.shift(),l,k,o,p,s,n,t,q,v;;){b.empty()||(l=b.min());if(e&&(b.empty()||e.y<l.y||e.y==l.y&&e.x<l.x)){k=a.leftBound(e);o=a.right(k);t=a.rightRegion(k);v=f.bisect(t,e);n=
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k);a.insert(p,n);f.endPoint(v,B[k],q);if(q=f.intersect(p,n)){b.del(p);b.insert(p,q,f.distance(q,t))}(q=f.intersect(n,s))&&b.insert(n,q,f.distance(q,t))}}for(k=a.right(a.leftEnd);k!=a.rightEnd;k=a.right(k))g(k.edge)}function z(c,g,d,a,f,b){if(!c(g,d,a,f,b)){var e=(d+f)*0.5,l=(a+b)*0.5;g=g.nodes;g[0]&&z(c,g[0],d,a,e,l);g[1]&&z(c,g[1],e,a,f,l);g[2]&&z(c,g[2],d,l,e,b);g[3]&&z(c,g[3],e,l,f,b)}}d3.geom={};d3.geom.contour=function(c,g){var d;if(!(d=g))a:{for(var a=d=0;;){if(c(d,a)){d=[d,a];break a}if(d==
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t;for(b=1;b<g;++b)if(c[b][1]<c[e][1])e=b;else if(c[b][1]==c[e][1])e=c[b][0]<c[e][0]?b:e;for(b=0;b<g;++b)if(b!=e){k=c[b][1]-c[e][1];l=c[b][0]-c[e][0];a.push({angle:Math.atan2(k,l),index:b})}a.sort(function(q,v){return q.angle-v.angle});t=a[0].angle;n=a[0].index;s=0;for(b=1;b<d;++b){g=a[b].index;if(t==a[b].angle){l=c[n][0]-c[e][0];k=c[n][1]-c[e][1];o=c[g][0]-c[e][0];p=c[g][1]-c[e][1];if(l*l+k*k>=o*o+p*p)a[b].index=-1;else{a[s].index=-1;t=a[b].angle;s=b;n=g}}else{t=a[b].angle;s=b;n=g}}f.push(e);for(g=
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