// https://d3js.org/d3-geo-projection/ Version 1.0.0. Copyright 2016 Mike Bostock.
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c=u*u,f=i(u),v=e(1/i(1+c)),g=1-c+u*(1+c)*v,l=(1-f)/g,s=i(l),h=l*(1+c),p=s*(1-c),d=h-n*n,w=i(d),R=r+p+u*w;if(Un(o-t)<fr||0===--a||0===R)break;R>0?t=u:o=u,u=.5*(t+o)}if(!a)return null;var P=e(f),j=Yn(P),y=1/j,E=2*f*j,M=(-3*u+v*(1+3*c))*E,m=(-g*j-(1-f)*M)/(g*g),b=.5*m/s,A=(1-c)*b-2*u*s*E,k=-2*y*A,G=-y*E,S=-y*(u*(1+c)*m+l*(1+3*c)*E);return[vr/4*(n*(k+G*w)+S*e(n/i(h))),P]}function xn(){return r.geoProjection(zn(Cn)).scale(240)}function Fn(n){function r(r,e){var o=Un(r)<gr,i=n(o?r:r>0?r-vr:r+vr,e),u=(i[0]-i[1])*sr,a=(i[0]+i[1])*sr;if(o)return[u,a];var c=t*sr,f=u>0^a>0?-1:1;return[f*u-ir(a)*c,f*a-ir(u)*c]}var t=n(gr,0)[0]-n(-gr,0)[0];return n.invert&&(r.invert=function(r,e){var o=(r+e)*sr,i=(e-r)*sr,u=Un(o)<.5*t&&Un(i)<.5*t;if(!u){var a=t*sr,c=o>0^i>0?-1:1,f=-c*(r+(i>0?1:-1)*a),v=-c*(e+(o>0?1:-1)*a);o=(-f-v)*sr,i=(f-v)*sr}var g=n.invert(o,i);return u||(g[0]+=o>0?vr:-vr),g}),r}function Qn(){return r.geoProjection(Fn(Cn)).scale(176.5).rotate([-90,-90,45]).clipAngle(179.999)}function 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