import{path as n}from"d3-path";var r=Math.abs;var t=Math.cos;var e=Math.sin;var o=Math.PI;var u=o/2;var a=2*o;var l=Math.max;var i=1e-12;function range(n,r){return Array.from({length:r-n},((r,t)=>n+t))}function compareValue(n){return function(r,t){return n(r.source.value+r.target.value,t.source.value+t.target.value)}}function chord(){return chord$1(false,false)}function chordTranspose(){return chord$1(false,true)}function chordDirected(){return chord$1(true,false)}function chord$1(n,r){var t=0,e=null,o=null,u=null;function chord(i){var c,s=i.length,f=new Array(s),d=range(0,s),g=new Array(s*s),b=new Array(s),h=0;i=Float64Array.from({length:s*s},r?(n,r)=>i[r%s][r/s|0]:(n,r)=>i[r/s|0][r%s]);for(let r=0;r<s;++r){let t=0;for(let e=0;e<s;++e)t+=i[r*s+e]+n*i[e*s+r];h+=f[r]=t}h=l(0,a-t*s)/h;c=h?t:a/s;{let r=0;e&&d.sort(((n,r)=>e(f[n],f[r])));for(const t of d){const e=r;if(n){const n=range(1+~s,s).filter((n=>n<0?i[~n*s+t]:i[t*s+n]));o&&n.sort(((n,r)=>o(n<0?-i[~n*s+t]:i[t*s+n],r<0?-i[~r*s+t]:i[t*s+r])));for(const e of n)if(e<0){const n=g[~e*s+t]||(g[~e*s+t]={source:null,target:null});n.target={index:t,startAngle:r,endAngle:r+=i[~e*s+t]*h,value:i[~e*s+t]}}else{const n=g[t*s+e]||(g[t*s+e]={source:null,target:null});n.source={index:t,startAngle:r,endAngle:r+=i[t*s+e]*h,value:i[t*s+e]}}b[t]={index:t,startAngle:e,endAngle:r,value:f[t]}}else{const n=range(0,s).filter((n=>i[t*s+n]||i[n*s+t]));o&&n.sort(((n,r)=>o(i[t*s+n],i[t*s+r])));for(const e of n){let n;if(t<e){n=g[t*s+e]||(g[t*s+e]={source:null,target:null});n.source={index:t,startAngle:r,endAngle:r+=i[t*s+e]*h,value:i[t*s+e]}}else{n=g[e*s+t]||(g[e*s+t]={source:null,target:null});n.target={index:t,startAngle:r,endAngle:r+=i[t*s+e]*h,value:i[t*s+e]};t===e&&(n.source=n.target)}if(n.source&&n.target&&n.source.value<n.target.value){const r=n.source;n.source=n.target;n.target=r}}b[t]={index:t,startAngle:e,endAngle:r,value:f[t]}}r+=c}}g=Object.values(g);g.groups=b;return u?g.sort(u):g}chord.padAngle=function(n){return arguments.length?(t=l(0,n),chord):t};chord.sortGroups=function(n){return arguments.length?(e=n,chord):e};chord.sortSubgroups=function(n){return arguments.length?(o=n,chord):o};chord.sortChords=function(n){return arguments.length?(null==n?u=null:(u=compareValue(n))._=n,chord):u&&u._};return chord}var c=Array.prototype.slice;function constant(n){return function(){return n}}function defaultSource(n){return n.source}function defaultTarget(n){return n.target}function defaultRadius(n){return n.radius}function defaultStartAngle(n){return n.startAngle}function defaultEndAngle(n){return n.endAngle}function defaultPadAngle(){return 0}function defaultArrowheadRadius(){return 10}function ribbon(o){var a=defaultSource,l=defaultTarget,s=defaultRadius,f=defaultRadius,d=defaultStartAngle,g=defaultEndAngle,b=defaultPadAngle,h=null;function ribbon(){var p,A=a.apply(this,arguments),v=l.apply(this,arguments),y=b.apply(this,arguments)/2,T=c.call(arguments),x=+s.apply(this,(T[0]=A,T)),m=d.apply(this,T)-u,R=g.apply(this,T)-u,w=+f.apply(this,(T[0]=v,T)),$=d.apply(this,T)-u,M=g.apply(this,T)-u;h||(h=p=n());if(y>i){r(R-m)>2*y+i?R>m?(m+=y,R-=y):(m-=y,R+=y):m=R=(m+R)/2;r(M-$)>2*y+i?M>$?($+=y,M-=y):($-=y,M+=y):$=M=($+M)/2}h.moveTo(x*t(m),x*e(m));h.arc(0,0,x,m,R);if(m!==$||R!==M)if(o){var S=+o.apply(this,arguments),C=w-S,P=($+M)/2;h.quadraticCurveTo(0,0,C*t($),C*e($));h.lineTo(w*t(P),w*e(P));h.lineTo(C*t(M),C*e(M))}else{h.quadraticCurveTo(0,0,w*t($),w*e($));h.arc(0,0,w,$,M)}h.quadraticCurveTo(0,0,x*t(m),x*e(m));h.closePath();if(p)return h=null,p+""||null}o&&(ribbon.headRadius=function(n){return arguments.length?(o="function"===typeof n?n:constant(+n),ribbon):o});ribbon.radius=function(n){return arguments.length?(s=f="function"===typeof n?n:constant(+n),ribbon):s};ribbon.sourceRadius=function(n){return arguments.length?(s="function"===typeof n?n:constant(+n),ribbon):s};ribbon.targetRadius=function(n){return arguments.length?(f="function"===typeof n?n:constant(+n),ribbon):f};ribbon.startAngle=function(n){return arguments.length?(d="function"===typeof n?n:constant(+n),ribbon):d};ribbon.endAngle=function(n){return arguments.length?(g="function"===typeof n?n:constant(+n),ribbon):g};ribbon.padAngle=function(n){return arguments.length?(b="function"===typeof n?n:constant(+n),ribbon):b};ribbon.source=function(n){return arguments.length?(a=n,ribbon):a};ribbon.target=function(n){return arguments.length?(l=n,ribbon):l};ribbon.context=function(n){return arguments.length?(h=null==n?null:n,ribbon):h};return ribbon}function ribbon$1(){return ribbon()}function ribbonArrow(){return ribbon(defaultArrowheadRadius)}export{chord,chordDirected,chordTranspose,ribbon$1 as ribbon,ribbonArrow};