d3-delaunay - npm Package Compare versions

Comparing version 5.0.2 to 5.1.0

dist/d3-delaunay.js

@@ -1,2 +0,2 @@
-// https://github.com/d3/d3-delaunay v5.0.2 Copyright 2019 Mike Bostock
+// https://github.com/d3/d3-delaunay v5.1.0 Copyright 2019 Mike Bostock
 // https://github.com/mapbox/delaunator v4.0.0. Copyright 2019 Mapbox, Inc.
@@ -552,9 +552,19 @@ (function (global, factory) {
     if (!((xmax = +xmax) >= (xmin = +xmin)) || !((ymax = +ymax) >= (ymin = +ymin))) throw new Error("invalid bounds");
-    const {points, hull, triangles} = this.delaunay = delaunay;
-    const circumcenters = this.circumcenters = new Float64Array(triangles.length / 3 * 2);
-    const vectors = this.vectors = new Float64Array(points.length * 2);
+    this.delaunay = delaunay;
+    this._circumcenters = new Float64Array(delaunay.points.length * 2);
+    this.vectors = new Float64Array(delaunay.points.length * 2);
     this.xmax = xmax, this.xmin = xmin;
     this.ymax = ymax, this.ymin = ymin;
+    this._init();
+  }
+  update() {
+    this.delaunay.update();
+    this._init();
+    return this;
+  }
+  _init() {
+    const {delaunay: {points, hull, triangles}, vectors} = this;
 
     // Compute circumcenters.
+    const circumcenters = this.circumcenters = this._circumcenters.subarray(0, triangles.length / 3 * 2);
     for (let i = 0, j = 0, n = triangles.length; i < n; i += 3, j += 2) {
@@ -859,2 +869,3 @@ const t1 = triangles[i] * 2;
     this._init();
+    return this;
   }
@@ -861,0 +872,0 @@ _init() {

dist/d3-delaunay.min.js

@@ -1,3 +0,3 @@
-// https://github.com/d3/d3-delaunay v5.0.2 Copyright 2019 Mike Bostock
+// https://github.com/d3/d3-delaunay v5.1.0 Copyright 2019 Mike Bostock
 // https://github.com/mapbox/delaunator v4.0.0. Copyright 2019 Mapbox, Inc.
-!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?i(exports):"function"==typeof define&&define.amd?define(["exports"],i):i((t=t||self).d3=t.d3||{})}(this,function(t){"use strict";const i=Math.pow(2,-52),e=new Uint32Array(512);class n{static from(t,i=function(t){return t[0]},e=function(t){return t[1]}){const s=t.length,h=new Float64Array(2*s);for(let n=0;n<s;n++){const s=t[n];h[2*n]=i(s),h[2*n+1]=e(s)}return new n(h)}constructor(t){const i=t.length>>1;if(i>0&&"number"!=typeof t[0])throw new Error("Expected coords to contain numbers.");this.coords=t;const e=Math.max(2*i-5,0);this._triangles=new Uint32Array(3*e),this._halfedges=new Int32Array(3*e),this._hashSize=Math.ceil(Math.sqrt(i)),this._hullPrev=new Uint32Array(i),this._hullNext=new Uint32Array(i),this._hullTri=new Uint32Array(i),this._hullHash=new Int32Array(this._hashSize).fill(-1),this._ids=new Uint32Array(i),this._dists=new Float64Array(i),this.update()}update(){const{coords:t,_hullPrev:e,_hullNext:n,_hullTri:l,_hullHash:a}=this,c=t.length>>1;let u=1/0,_=1/0,f=-1/0,d=-1/0;for(let i=0;i<c;i++){const e=t[2*i],n=t[2*i+1];e<u&&(u=e),n<_&&(_=n),e>f&&(f=e),n>d&&(d=n),this._ids[i]=i}const g=(u+f)/2,y=(_+d)/2;let m,x,p,w=1/0;for(let i=0;i<c;i++){const e=s(g,y,t[2*i],t[2*i+1]);e<w&&(m=i,w=e)}const v=t[2*m],T=t[2*m+1];w=1/0;for(let i=0;i<c;i++){if(i===m)continue;const e=s(v,T,t[2*i],t[2*i+1]);e<w&&e>0&&(x=i,w=e)}let A=t[2*x],b=t[2*x+1],M=1/0;for(let i=0;i<c;i++){if(i===m||i===x)continue;const e=r(v,T,A,b,t[2*i],t[2*i+1]);e<M&&(p=i,M=e)}let $=t[2*p],P=t[2*p+1];if(M===1/0){for(let i=0;i<c;i++)this._dists[i]=t[2*i]-t[0]||t[2*i+1]-t[1];o(this._ids,this._dists,0,c-1);const i=new Uint32Array(c);let e=0;for(let t=0,n=-1/0;t<c;t++){const s=this._ids[t];this._dists[s]>n&&(i[e++]=s,n=this._dists[s])}return this.hull=i.subarray(0,e),this.triangles=new Uint32Array(0),void(this.halfedges=new Uint32Array(0))}if(h(v,T,A,b,$,P)){const t=x,i=A,e=b;x=p,A=$,b=P,p=t,$=i,P=e}const S=function(t,i,e,n,s,h){const l=e-t,r=n-i,o=s-t,a=h-i,c=l*l+r*r,u=o*o+a*a,_=.5/(l*a-r*o);return{x:t+(a*c-r*u)*_,y:i+(l*u-o*c)*_}}(v,T,A,b,$,P);this._cx=S.x,this._cy=S.y;for(let i=0;i<c;i++)this._dists[i]=s(t[2*i],t[2*i+1],S.x,S.y);o(this._ids,this._dists,0,c-1),this._hullStart=m;let k=3;n[m]=e[p]=x,n[x]=e[m]=p,n[p]=e[x]=m,l[m]=0,l[x]=1,l[p]=2,a.fill(-1),a[this._hashKey(v,T)]=m,a[this._hashKey(A,b)]=x,a[this._hashKey($,P)]=p,this.trianglesLen=0,this._addTriangle(m,x,p,-1,-1,-1);for(let s,r,o=0;o<this._ids.length;o++){const c=this._ids[o],u=t[2*c],_=t[2*c+1];if(o>0&&Math.abs(u-s)<=i&&Math.abs(_-r)<=i)continue;if(s=u,r=_,c===m||c===x||c===p)continue;let f=0;for(let t=0,i=this._hashKey(u,_);t<this._hashSize&&(-1===(f=a[(i+t)%this._hashSize])||f===n[f]);t++);let d,g=f=e[f];for(;d=n[g],!h(u,_,t[2*g],t[2*g+1],t[2*d],t[2*d+1]);)if((g=d)===f){g=-1;break}if(-1===g)continue;let y=this._addTriangle(g,c,n[g],-1,-1,l[g]);l[c]=this._legalize(y+2),l[g]=y,k++;let w=n[g];for(;d=n[w],h(u,_,t[2*w],t[2*w+1],t[2*d],t[2*d+1]);)y=this._addTriangle(w,c,d,l[c],-1,l[w]),l[c]=this._legalize(y+2),n[w]=w,k--,w=d;if(g===f)for(;h(u,_,t[2*(d=e[g])],t[2*d+1],t[2*g],t[2*g+1]);)y=this._addTriangle(d,c,g,-1,l[g],l[d]),this._legalize(y+2),l[d]=y,n[g]=g,k--,g=d;this._hullStart=e[c]=g,n[g]=e[w]=c,n[c]=w,a[this._hashKey(u,_)]=c,a[this._hashKey(t[2*g],t[2*g+1])]=g}this.hull=new Uint32Array(k);for(let t=0,i=this._hullStart;t<k;t++)this.hull[t]=i,i=n[i];this.triangles=this._triangles.subarray(0,this.trianglesLen),this.halfedges=this._halfedges.subarray(0,this.trianglesLen)}_hashKey(t,i){return Math.floor(function(t,i){const e=t/(Math.abs(t)+Math.abs(i));return(i>0?3-e:1+e)/4}(t-this._cx,i-this._cy)*this._hashSize)%this._hashSize}_legalize(t){const{_triangles:i,_halfedges:n,coords:s}=this;let h=0,r=0;for(;;){const o=n[t],a=t-t%3;if(r=a+(t+2)%3,-1===o){if(0===h)break;t=e[--h];continue}const c=o-o%3,u=a+(t+1)%3,_=c+(o+2)%3,f=i[r],d=i[t],g=i[u],y=i[_];if(l(s[2*f],s[2*f+1],s[2*d],s[2*d+1],s[2*g],s[2*g+1],s[2*y],s[2*y+1])){i[t]=y,i[o]=f;const s=n[_];if(-1===s){let i=this._hullStart;do{if(this._hullTri[i]===_){this._hullTri[i]=t;break}i=this._hullPrev[i]}while(i!==this._hullStart)}this._link(t,s),this._link(o,n[r]),this._link(r,_);const l=c+(o+1)%3;h<e.length&&(e[h++]=l)}else{if(0===h)break;t=e[--h]}}return r}_link(t,i){this._halfedges[t]=i,-1!==i&&(this._halfedges[i]=t)}_addTriangle(t,i,e,n,s,h){const l=this.trianglesLen;return this._triangles[l]=t,this._triangles[l+1]=i,this._triangles[l+2]=e,this._link(l,n),this._link(l+1,s),this._link(l+2,h),this.trianglesLen+=3,l}}function s(t,i,e,n){const s=t-e,h=i-n;return s*s+h*h}function h(t,i,e,n,s,h){return(n-i)*(s-e)-(e-t)*(h-n)<0}function l(t,i,e,n,s,h,l,r){const o=t-l,a=i-r,c=e-l,u=n-r,_=s-l,f=h-r,d=c*c+u*u,g=_*_+f*f;return o*(u*g-d*f)-a*(c*g-d*_)+(o*o+a*a)*(c*f-u*_)<0}function r(t,i,e,n,s,h){const l=e-t,r=n-i,o=s-t,a=h-i,c=l*l+r*r,u=o*o+a*a,_=.5/(l*a-r*o),f=(a*c-r*u)*_,d=(l*u-o*c)*_;return f*f+d*d}function o(t,i,e,n){if(n-e<=20)for(let s=e+1;s<=n;s++){const n=t[s],h=i[n];let l=s-1;for(;l>=e&&i[t[l]]>h;)t[l+1]=t[l--];t[l+1]=n}else{let s=e+1,h=n;a(t,e+n>>1,s),i[t[e]]>i[t[n]]&&a(t,e,n),i[t[s]]>i[t[n]]&&a(t,s,n),i[t[e]]>i[t[s]]&&a(t,e,s);const l=t[s],r=i[l];for(;;){do{s++}while(i[t[s]]<r);do{h--}while(i[t[h]]>r);if(h<s)break;a(t,s,h)}t[e+1]=t[h],t[h]=l,n-s+1>=h-e?(o(t,i,s,n),o(t,i,e,h-1)):(o(t,i,e,h-1),o(t,i,s,n))}}function a(t,i,e){const n=t[i];t[i]=t[e],t[e]=n}const c=1e-6;class u{constructor(){this._x0=this._y0=this._x1=this._y1=null,this._=""}moveTo(t,i){this._+=`M${this._x0=this._x1=+t},${this._y0=this._y1=+i}`}closePath(){null!==this._x1&&(this._x1=this._x0,this._y1=this._y0,this._+="Z")}lineTo(t,i){this._+=`L${this._x1=+t},${this._y1=+i}`}arc(t,i,e){const n=(t=+t)+(e=+e),s=i=+i;if(e<0)throw new Error("negative radius");null===this._x1?this._+=`M${n},${s}`:(Math.abs(this._x1-n)>c||Math.abs(this._y1-s)>c)&&(this._+="L"+n+","+s),e&&(this._+=`A${e},${e},0,1,1,${t-e},${i}A${e},${e},0,1,1,${this._x1=n},${this._y1=s}`)}rect(t,i,e,n){this._+=`M${this._x0=this._x1=+t},${this._y0=this._y1=+i}h${+e}v${+n}h${-e}Z`}value(){return this._||null}}class _{constructor(){this._=[]}moveTo(t,i){this._.push([t,i])}closePath(){this._.push(this._[0].slice())}lineTo(t,i){this._.push([t,i])}value(){return this._.length?this._:null}}class f{constructor(t,[i,e,n,s]=[0,0,960,500]){if(!((n=+n)>=(i=+i)&&(s=+s)>=(e=+e)))throw new Error("invalid bounds");const{points:h,hull:l,triangles:r}=this.delaunay=t,o=this.circumcenters=new Float64Array(r.length/3*2),a=this.vectors=new Float64Array(2*h.length);this.xmax=n,this.xmin=i,this.ymax=s,this.ymin=e;for(let t=0,i=0,e=r.length;t<e;t+=3,i+=2){const e=2*r[t],n=2*r[t+1],s=2*r[t+2],l=h[e],a=h[e+1],c=h[n],u=h[n+1],_=h[s],f=h[s+1],d=l-c,g=l-_,y=a-u,m=a-f,x=l*l+a*a,p=x-c*c-u*u,w=x-_*_-f*f,v=2*(g*y-d*m);v?(o[i]=(y*w-m*p)/v,o[i+1]=(g*p-d*w)/v):(o[i]=(l+_)/2+1e8*m,o[i+1]=(a+f)/2-1e8*g)}let c,u,_,f=l[l.length-1],d=4*f,g=h[2*f],y=h[2*f+1];for(let t=0;t<l.length;++t)c=d,u=g,_=y,d=4*(f=l[t]),g=h[2*f],y=h[2*f+1],a[c+2]=a[d]=_-y,a[c+3]=a[d+1]=g-u}render(t){const i=null==t?t=new u:void 0,{delaunay:{halfedges:e,inedges:n,hull:s},circumcenters:h,vectors:l}=this;if(s.length<=1)return null;for(let i=0,n=e.length;i<n;++i){const n=e[i];if(n<i)continue;const s=2*Math.floor(i/3),l=2*Math.floor(n/3),r=h[s],o=h[s+1],a=h[l],c=h[l+1];this._renderSegment(r,o,a,c,t)}let r,o=s[s.length-1];for(let i=0;i<s.length;++i){r=o,o=s[i];const e=2*Math.floor(n[o]/3),a=h[e],c=h[e+1],u=4*r,_=this._project(a,c,l[u+2],l[u+3]);_&&this._renderSegment(a,c,_[0],_[1],t)}return i&&i.value()}renderBounds(t){const i=null==t?t=new u:void 0;return t.rect(this.xmin,this.ymin,this.xmax-this.xmin,this.ymax-this.ymin),i&&i.value()}renderCell(t,i){const e=null==i?i=new u:void 0,n=this._clip(t);if(null!==n){i.moveTo(n[0],n[1]);for(let t=2,e=n.length;t<e;t+=2)i.lineTo(n[t],n[t+1]);return i.closePath(),e&&e.value()}}*cellPolygons(){const{delaunay:{points:t}}=this;for(let i=0,e=t.length/2;i<e;++i){const t=this.cellPolygon(i);t&&(yield t)}}cellPolygon(t){const i=new _;return this.renderCell(t,i),i.value()}_renderSegment(t,i,e,n,s){let h;const l=this._regioncode(t,i),r=this._regioncode(e,n);0===l&&0===r?(s.moveTo(t,i),s.lineTo(e,n)):(h=this._clipSegment(t,i,e,n,l,r))&&(s.moveTo(h[0],h[1]),s.lineTo(h[2],h[3]))}contains(t,i,e){return(i=+i)==i&&(e=+e)==e&&this.delaunay._step(t,i,e)===t}_cell(t){const{circumcenters:i,delaunay:{inedges:e,halfedges:n,triangles:s}}=this,h=e[t];if(-1===h)return null;const l=[];let r=h;do{const e=Math.floor(r/3);if(l.push(i[2*e],i[2*e+1]),s[r=r%3==2?r-2:r+1]!==t)break;r=n[r]}while(r!==h&&-1!==r);return l}_clip(t){if(0===t&&1===this.delaunay.hull.length)return[this.xmax,this.ymin,this.xmax,this.ymax,this.xmin,this.ymax,this.xmin,this.ymin];const i=this._cell(t);if(null===i)return null;const{vectors:e}=this,n=4*t;return e[n]||e[n+1]?this._clipInfinite(t,i,e[n],e[n+1],e[n+2],e[n+3]):this._clipFinite(t,i)}_clipFinite(t,i){const e=i.length;let n,s,h,l,r,o=null,a=i[e-2],c=i[e-1],u=this._regioncode(a,c);for(let _=0;_<e;_+=2)if(n=a,s=c,a=i[_],c=i[_+1],h=u,u=this._regioncode(a,c),0===h&&0===u)l=r,r=0,o?o.push(a,c):o=[a,c];else{let i,e,_,f,d;if(0===h){if(null===(i=this._clipSegment(n,s,a,c,h,u)))continue;[e,_,f,d]=i}else{if(null===(i=this._clipSegment(a,c,n,s,u,h)))continue;[f,d,e,_]=i,l=r,r=this._edgecode(e,_),l&&r&&this._edge(t,l,r,o,o.length),o?o.push(e,_):o=[e,_]}l=r,r=this._edgecode(f,d),l&&r&&this._edge(t,l,r,o,o.length),o?o.push(f,d):o=[f,d]}if(o)l=r,r=this._edgecode(o[0],o[1]),l&&r&&this._edge(t,l,r,o,o.length);else if(this.contains(t,(this.xmin+this.xmax)/2,(this.ymin+this.ymax)/2))return[this.xmax,this.ymin,this.xmax,this.ymax,this.xmin,this.ymax,this.xmin,this.ymin];return o}_clipSegment(t,i,e,n,s,h){for(;;){if(0===s&&0===h)return[t,i,e,n];if(s&h)return null;let l,r,o=s||h;8&o?(l=t+(e-t)*(this.ymax-i)/(n-i),r=this.ymax):4&o?(l=t+(e-t)*(this.ymin-i)/(n-i),r=this.ymin):2&o?(r=i+(n-i)*(this.xmax-t)/(e-t),l=this.xmax):(r=i+(n-i)*(this.xmin-t)/(e-t),l=this.xmin),s?(t=l,i=r,s=this._regioncode(t,i)):(e=l,n=r,h=this._regioncode(e,n))}}_clipInfinite(t,i,e,n,s,h){let l,r=Array.from(i);if((l=this._project(r[0],r[1],e,n))&&r.unshift(l[0],l[1]),(l=this._project(r[r.length-2],r[r.length-1],s,h))&&r.push(l[0],l[1]),r=this._clipFinite(t,r))for(let i,e=0,n=r.length,s=this._edgecode(r[n-2],r[n-1]);e<n;e+=2)i=s,s=this._edgecode(r[e],r[e+1]),i&&s&&(e=this._edge(t,i,s,r,e),n=r.length);else this.contains(t,(this.xmin+this.xmax)/2,(this.ymin+this.ymax)/2)&&(r=[this.xmin,this.ymin,this.xmax,this.ymin,this.xmax,this.ymax,this.xmin,this.ymax]);return r}_edge(t,i,e,n,s){for(;i!==e;){let e,h;switch(i){case 5:i=4;continue;case 4:i=6,e=this.xmax,h=this.ymin;break;case 6:i=2;continue;case 2:i=10,e=this.xmax,h=this.ymax;break;case 10:i=8;continue;case 8:i=9,e=this.xmin,h=this.ymax;break;case 9:i=1;continue;case 1:i=5,e=this.xmin,h=this.ymin}n[s]===e&&n[s+1]===h||!this.contains(t,e,h)||(n.splice(s,0,e,h),s+=2)}return s}_project(t,i,e,n){let s,h,l,r=1/0;if(n<0){if(i<=this.ymin)return null;(s=(this.ymin-i)/n)<r&&(l=this.ymin,h=t+(r=s)*e)}else if(n>0){if(i>=this.ymax)return null;(s=(this.ymax-i)/n)<r&&(l=this.ymax,h=t+(r=s)*e)}if(e>0){if(t>=this.xmax)return null;(s=(this.xmax-t)/e)<r&&(h=this.xmax,l=i+(r=s)*n)}else if(e<0){if(t<=this.xmin)return null;(s=(this.xmin-t)/e)<r&&(h=this.xmin,l=i+(r=s)*n)}return[h,l]}_edgecode(t,i){return(t===this.xmin?1:t===this.xmax?2:0)|(i===this.ymin?4:i===this.ymax?8:0)}_regioncode(t,i){return(t<this.xmin?1:t>this.xmax?2:0)|(i<this.ymin?4:i>this.ymax?8:0)}}const d=2*Math.PI;function g(t,i,e){return[t+Math.sin(t+i)*e,i+Math.cos(t-i)*e]}class y{constructor(t){this._delaunator=new n(t),this.inedges=new Int32Array(t.length/2),this._hullIndex=new Int32Array(t.length/2),this.points=this._delaunator.coords,this._init()}update(){this._delaunator.update(),this._init()}_init(){const t=this._delaunator,i=this.points;if(t.hull&&t.hull.length>2&&function(t,i){let e,n,s=t.length,h=i[2*t[s-1]],l=i[2*t[s-1]+1],r=0;for(let o=0;o<s;o++)e=h,r+=(n=l)*(h=i[2*t[o]])-e*(l=i[2*t[o]+1]);return r/2}(t.hull,i)<1e-10){this.collinear=Int32Array.from({length:i.length/2},(t,i)=>i).sort((t,e)=>i[2*t]-i[2*e]||i[2*t+1]-i[2*e+1]);const t=this.collinear[0],e=this.collinear[this.collinear.length-1],s=[i[2*t],i[2*t+1],i[2*e],i[2*e+1]],h=1e-8*Math.sqrt((s[3]-s[1])**2+(s[2]-s[0])**2);for(let t=0,e=i.length/2;t<e;++t){const e=g(i[2*t],i[2*t+1],h);i[2*t]=e[0],i[2*t+1]=e[1]}this._delaunator=new n(i)}else delete this.collinear;const e=this.halfedges=this._delaunator.halfedges,s=this.hull=this._delaunator.hull,h=this.triangles=this._delaunator.triangles,l=this.inedges.fill(-1),r=this._hullIndex.fill(-1);for(let t=0,i=e.length;t<i;++t){const i=h[t%3==2?t-2:t+1];-1!==e[t]&&-1!==l[i]||(l[i]=t)}for(let t=0,i=s.length;t<i;++t)r[s[t]]=t;s.length<=2&&s.length>0&&(this.triangles=new Int32Array(3).fill(-1),this.halfedges=new Int32Array(3).fill(-1),this.triangles[0]=s[0],this.triangles[1]=s[1],this.triangles[2]=s[1],l[s[0]]=1,2===s.length&&(l[s[1]]=0))}voronoi(t){return new f(this,t)}*neighbors(t){const{inedges:i,hull:e,_hullIndex:n,halfedges:s,triangles:h}=this;if(this.collinear){const i=this.collinear.indexOf(t);return i>0&&(yield this.collinear[i-1]),void(i<this.collinear.length-1&&(yield this.collinear[i+1]))}const l=i[t];if(-1===l)return;let r=l,o=-1;do{if(yield o=h[r],h[r=r%3==2?r-2:r+1]!==t)return;if(-1===(r=s[r])){const i=e[(n[t]+1)%e.length];return void(i!==o&&(yield i))}}while(r!==l)}find(t,i,e=0){if((t=+t)!=t||(i=+i)!=i)return-1;const n=e;let s;for(;(s=this._step(e,t,i))>=0&&s!==e&&s!==n;)e=s;return s}_step(t,i,e){const{inedges:n,points:s}=this;if(-1===n[t]||!s.length)return(t+1)%(s.length>>1);let h=t,l=(i-s[2*t])**2+(e-s[2*t+1])**2;for(const n of this.neighbors(t)){const t=(i-s[2*n])**2+(e-s[2*n+1])**2;t<l&&(l=t,h=n)}return h}render(t){const i=null==t?t=new u:void 0,{points:e,halfedges:n,triangles:s}=this;for(let i=0,h=n.length;i<h;++i){const h=n[i];if(h<i)continue;const l=2*s[i],r=2*s[h];t.moveTo(e[l],e[l+1]),t.lineTo(e[r],e[r+1])}return this.renderHull(t),i&&i.value()}renderPoints(t,i=2){const e=null==t?t=new u:void 0,{points:n}=this;for(let e=0,s=n.length;e<s;e+=2){const s=n[e],h=n[e+1];t.moveTo(s+i,h),t.arc(s,h,i,0,d)}return e&&e.value()}renderHull(t){const i=null==t?t=new u:void 0,{hull:e,points:n}=this,s=2*e[0],h=e.length;t.moveTo(n[s],n[s+1]);for(let i=1;i<h;++i){const s=2*e[i];t.lineTo(n[s],n[s+1])}return t.closePath(),i&&i.value()}hullPolygon(){const t=new _;return this.renderHull(t),t.value()}renderTriangle(t,i){const e=null==i?i=new u:void 0,{points:n,triangles:s}=this,h=2*s[t*=3],l=2*s[t+1],r=2*s[t+2];return i.moveTo(n[h],n[h+1]),i.lineTo(n[l],n[l+1]),i.lineTo(n[r],n[r+1]),i.closePath(),e&&e.value()}*trianglePolygons(){const{triangles:t}=this;for(let i=0,e=t.length/3;i<e;++i)yield this.trianglePolygon(i)}trianglePolygon(t){const i=new _;return this.renderTriangle(t,i),i.value()}}y.from=function(t,i=function(t){return t[0]},e=function(t){return t[1]},n){return new y("length"in t?function(t,i,e,n){const s=t.length,h=new Float64Array(2*s);for(let l=0;l<s;++l){const s=t[l];h[2*l]=i.call(n,s,l,t),h[2*l+1]=e.call(n,s,l,t)}return h}(t,i,e,n):Float64Array.from(function*(t,i,e,n){let s=0;for(const h of t)yield i.call(n,h,s,t),yield e.call(n,h,s,t),++s}(t,i,e,n)))},t.Delaunay=y,t.Voronoi=f,Object.defineProperty(t,"__esModule",{value:!0})});
+!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?i(exports):"function"==typeof define&&define.amd?define(["exports"],i):i((t=t||self).d3=t.d3||{})}(this,function(t){"use strict";const i=Math.pow(2,-52),e=new Uint32Array(512);class n{static from(t,i=function(t){return t[0]},e=function(t){return t[1]}){const s=t.length,h=new Float64Array(2*s);for(let n=0;n<s;n++){const s=t[n];h[2*n]=i(s),h[2*n+1]=e(s)}return new n(h)}constructor(t){const i=t.length>>1;if(i>0&&"number"!=typeof t[0])throw new Error("Expected coords to contain numbers.");this.coords=t;const e=Math.max(2*i-5,0);this._triangles=new Uint32Array(3*e),this._halfedges=new Int32Array(3*e),this._hashSize=Math.ceil(Math.sqrt(i)),this._hullPrev=new Uint32Array(i),this._hullNext=new Uint32Array(i),this._hullTri=new Uint32Array(i),this._hullHash=new Int32Array(this._hashSize).fill(-1),this._ids=new Uint32Array(i),this._dists=new Float64Array(i),this.update()}update(){const{coords:t,_hullPrev:e,_hullNext:n,_hullTri:l,_hullHash:a}=this,c=t.length>>1;let u=1/0,_=1/0,f=-1/0,d=-1/0;for(let i=0;i<c;i++){const e=t[2*i],n=t[2*i+1];e<u&&(u=e),n<_&&(_=n),e>f&&(f=e),n>d&&(d=n),this._ids[i]=i}const g=(u+f)/2,y=(_+d)/2;let m,x,p,w=1/0;for(let i=0;i<c;i++){const e=s(g,y,t[2*i],t[2*i+1]);e<w&&(m=i,w=e)}const v=t[2*m],T=t[2*m+1];w=1/0;for(let i=0;i<c;i++){if(i===m)continue;const e=s(v,T,t[2*i],t[2*i+1]);e<w&&e>0&&(x=i,w=e)}let b=t[2*x],A=t[2*x+1],M=1/0;for(let i=0;i<c;i++){if(i===m||i===x)continue;const e=r(v,T,b,A,t[2*i],t[2*i+1]);e<M&&(p=i,M=e)}let $=t[2*p],P=t[2*p+1];if(M===1/0){for(let i=0;i<c;i++)this._dists[i]=t[2*i]-t[0]||t[2*i+1]-t[1];o(this._ids,this._dists,0,c-1);const i=new Uint32Array(c);let e=0;for(let t=0,n=-1/0;t<c;t++){const s=this._ids[t];this._dists[s]>n&&(i[e++]=s,n=this._dists[s])}return this.hull=i.subarray(0,e),this.triangles=new Uint32Array(0),void(this.halfedges=new Uint32Array(0))}if(h(v,T,b,A,$,P)){const t=x,i=b,e=A;x=p,b=$,A=P,p=t,$=i,P=e}const S=function(t,i,e,n,s,h){const l=e-t,r=n-i,o=s-t,a=h-i,c=l*l+r*r,u=o*o+a*a,_=.5/(l*a-r*o);return{x:t+(a*c-r*u)*_,y:i+(l*u-o*c)*_}}(v,T,b,A,$,P);this._cx=S.x,this._cy=S.y;for(let i=0;i<c;i++)this._dists[i]=s(t[2*i],t[2*i+1],S.x,S.y);o(this._ids,this._dists,0,c-1),this._hullStart=m;let k=3;n[m]=e[p]=x,n[x]=e[m]=p,n[p]=e[x]=m,l[m]=0,l[x]=1,l[p]=2,a.fill(-1),a[this._hashKey(v,T)]=m,a[this._hashKey(b,A)]=x,a[this._hashKey($,P)]=p,this.trianglesLen=0,this._addTriangle(m,x,p,-1,-1,-1);for(let s,r,o=0;o<this._ids.length;o++){const c=this._ids[o],u=t[2*c],_=t[2*c+1];if(o>0&&Math.abs(u-s)<=i&&Math.abs(_-r)<=i)continue;if(s=u,r=_,c===m||c===x||c===p)continue;let f=0;for(let t=0,i=this._hashKey(u,_);t<this._hashSize&&(-1===(f=a[(i+t)%this._hashSize])||f===n[f]);t++);let d,g=f=e[f];for(;d=n[g],!h(u,_,t[2*g],t[2*g+1],t[2*d],t[2*d+1]);)if((g=d)===f){g=-1;break}if(-1===g)continue;let y=this._addTriangle(g,c,n[g],-1,-1,l[g]);l[c]=this._legalize(y+2),l[g]=y,k++;let w=n[g];for(;d=n[w],h(u,_,t[2*w],t[2*w+1],t[2*d],t[2*d+1]);)y=this._addTriangle(w,c,d,l[c],-1,l[w]),l[c]=this._legalize(y+2),n[w]=w,k--,w=d;if(g===f)for(;h(u,_,t[2*(d=e[g])],t[2*d+1],t[2*g],t[2*g+1]);)y=this._addTriangle(d,c,g,-1,l[g],l[d]),this._legalize(y+2),l[d]=y,n[g]=g,k--,g=d;this._hullStart=e[c]=g,n[g]=e[w]=c,n[c]=w,a[this._hashKey(u,_)]=c,a[this._hashKey(t[2*g],t[2*g+1])]=g}this.hull=new Uint32Array(k);for(let t=0,i=this._hullStart;t<k;t++)this.hull[t]=i,i=n[i];this.triangles=this._triangles.subarray(0,this.trianglesLen),this.halfedges=this._halfedges.subarray(0,this.trianglesLen)}_hashKey(t,i){return Math.floor(function(t,i){const e=t/(Math.abs(t)+Math.abs(i));return(i>0?3-e:1+e)/4}(t-this._cx,i-this._cy)*this._hashSize)%this._hashSize}_legalize(t){const{_triangles:i,_halfedges:n,coords:s}=this;let h=0,r=0;for(;;){const o=n[t],a=t-t%3;if(r=a+(t+2)%3,-1===o){if(0===h)break;t=e[--h];continue}const c=o-o%3,u=a+(t+1)%3,_=c+(o+2)%3,f=i[r],d=i[t],g=i[u],y=i[_];if(l(s[2*f],s[2*f+1],s[2*d],s[2*d+1],s[2*g],s[2*g+1],s[2*y],s[2*y+1])){i[t]=y,i[o]=f;const s=n[_];if(-1===s){let i=this._hullStart;do{if(this._hullTri[i]===_){this._hullTri[i]=t;break}i=this._hullPrev[i]}while(i!==this._hullStart)}this._link(t,s),this._link(o,n[r]),this._link(r,_);const l=c+(o+1)%3;h<e.length&&(e[h++]=l)}else{if(0===h)break;t=e[--h]}}return r}_link(t,i){this._halfedges[t]=i,-1!==i&&(this._halfedges[i]=t)}_addTriangle(t,i,e,n,s,h){const l=this.trianglesLen;return this._triangles[l]=t,this._triangles[l+1]=i,this._triangles[l+2]=e,this._link(l,n),this._link(l+1,s),this._link(l+2,h),this.trianglesLen+=3,l}}function s(t,i,e,n){const s=t-e,h=i-n;return s*s+h*h}function h(t,i,e,n,s,h){return(n-i)*(s-e)-(e-t)*(h-n)<0}function l(t,i,e,n,s,h,l,r){const o=t-l,a=i-r,c=e-l,u=n-r,_=s-l,f=h-r,d=c*c+u*u,g=_*_+f*f;return o*(u*g-d*f)-a*(c*g-d*_)+(o*o+a*a)*(c*f-u*_)<0}function r(t,i,e,n,s,h){const l=e-t,r=n-i,o=s-t,a=h-i,c=l*l+r*r,u=o*o+a*a,_=.5/(l*a-r*o),f=(a*c-r*u)*_,d=(l*u-o*c)*_;return f*f+d*d}function o(t,i,e,n){if(n-e<=20)for(let s=e+1;s<=n;s++){const n=t[s],h=i[n];let l=s-1;for(;l>=e&&i[t[l]]>h;)t[l+1]=t[l--];t[l+1]=n}else{let s=e+1,h=n;a(t,e+n>>1,s),i[t[e]]>i[t[n]]&&a(t,e,n),i[t[s]]>i[t[n]]&&a(t,s,n),i[t[e]]>i[t[s]]&&a(t,e,s);const l=t[s],r=i[l];for(;;){do{s++}while(i[t[s]]<r);do{h--}while(i[t[h]]>r);if(h<s)break;a(t,s,h)}t[e+1]=t[h],t[h]=l,n-s+1>=h-e?(o(t,i,s,n),o(t,i,e,h-1)):(o(t,i,e,h-1),o(t,i,s,n))}}function a(t,i,e){const n=t[i];t[i]=t[e],t[e]=n}const c=1e-6;class u{constructor(){this._x0=this._y0=this._x1=this._y1=null,this._=""}moveTo(t,i){this._+=`M${this._x0=this._x1=+t},${this._y0=this._y1=+i}`}closePath(){null!==this._x1&&(this._x1=this._x0,this._y1=this._y0,this._+="Z")}lineTo(t,i){this._+=`L${this._x1=+t},${this._y1=+i}`}arc(t,i,e){const n=(t=+t)+(e=+e),s=i=+i;if(e<0)throw new Error("negative radius");null===this._x1?this._+=`M${n},${s}`:(Math.abs(this._x1-n)>c||Math.abs(this._y1-s)>c)&&(this._+="L"+n+","+s),e&&(this._+=`A${e},${e},0,1,1,${t-e},${i}A${e},${e},0,1,1,${this._x1=n},${this._y1=s}`)}rect(t,i,e,n){this._+=`M${this._x0=this._x1=+t},${this._y0=this._y1=+i}h${+e}v${+n}h${-e}Z`}value(){return this._||null}}class _{constructor(){this._=[]}moveTo(t,i){this._.push([t,i])}closePath(){this._.push(this._[0].slice())}lineTo(t,i){this._.push([t,i])}value(){return this._.length?this._:null}}class f{constructor(t,[i,e,n,s]=[0,0,960,500]){if(!((n=+n)>=(i=+i)&&(s=+s)>=(e=+e)))throw new Error("invalid bounds");this.delaunay=t,this._circumcenters=new Float64Array(2*t.points.length),this.vectors=new Float64Array(2*t.points.length),this.xmax=n,this.xmin=i,this.ymax=s,this.ymin=e,this._init()}update(){return this.delaunay.update(),this._init(),this}_init(){const{delaunay:{points:t,hull:i,triangles:e},vectors:n}=this,s=this.circumcenters=this._circumcenters.subarray(0,e.length/3*2);for(let i=0,n=0,h=e.length;i<h;i+=3,n+=2){const h=2*e[i],l=2*e[i+1],r=2*e[i+2],o=t[h],a=t[h+1],c=t[l],u=t[l+1],_=t[r],f=t[r+1],d=o-c,g=o-_,y=a-u,m=a-f,x=o*o+a*a,p=x-c*c-u*u,w=x-_*_-f*f,v=2*(g*y-d*m);v?(s[n]=(y*w-m*p)/v,s[n+1]=(g*p-d*w)/v):(s[n]=(o+_)/2+1e8*m,s[n+1]=(a+f)/2-1e8*g)}let h,l,r,o=i[i.length-1],a=4*o,c=t[2*o],u=t[2*o+1];for(let e=0;e<i.length;++e)h=a,l=c,r=u,a=4*(o=i[e]),c=t[2*o],u=t[2*o+1],n[h+2]=n[a]=r-u,n[h+3]=n[a+1]=c-l}render(t){const i=null==t?t=new u:void 0,{delaunay:{halfedges:e,inedges:n,hull:s},circumcenters:h,vectors:l}=this;if(s.length<=1)return null;for(let i=0,n=e.length;i<n;++i){const n=e[i];if(n<i)continue;const s=2*Math.floor(i/3),l=2*Math.floor(n/3),r=h[s],o=h[s+1],a=h[l],c=h[l+1];this._renderSegment(r,o,a,c,t)}let r,o=s[s.length-1];for(let i=0;i<s.length;++i){r=o,o=s[i];const e=2*Math.floor(n[o]/3),a=h[e],c=h[e+1],u=4*r,_=this._project(a,c,l[u+2],l[u+3]);_&&this._renderSegment(a,c,_[0],_[1],t)}return i&&i.value()}renderBounds(t){const i=null==t?t=new u:void 0;return t.rect(this.xmin,this.ymin,this.xmax-this.xmin,this.ymax-this.ymin),i&&i.value()}renderCell(t,i){const e=null==i?i=new u:void 0,n=this._clip(t);if(null!==n){i.moveTo(n[0],n[1]);for(let t=2,e=n.length;t<e;t+=2)i.lineTo(n[t],n[t+1]);return i.closePath(),e&&e.value()}}*cellPolygons(){const{delaunay:{points:t}}=this;for(let i=0,e=t.length/2;i<e;++i){const t=this.cellPolygon(i);t&&(yield t)}}cellPolygon(t){const i=new _;return this.renderCell(t,i),i.value()}_renderSegment(t,i,e,n,s){let h;const l=this._regioncode(t,i),r=this._regioncode(e,n);0===l&&0===r?(s.moveTo(t,i),s.lineTo(e,n)):(h=this._clipSegment(t,i,e,n,l,r))&&(s.moveTo(h[0],h[1]),s.lineTo(h[2],h[3]))}contains(t,i,e){return(i=+i)==i&&(e=+e)==e&&this.delaunay._step(t,i,e)===t}_cell(t){const{circumcenters:i,delaunay:{inedges:e,halfedges:n,triangles:s}}=this,h=e[t];if(-1===h)return null;const l=[];let r=h;do{const e=Math.floor(r/3);if(l.push(i[2*e],i[2*e+1]),s[r=r%3==2?r-2:r+1]!==t)break;r=n[r]}while(r!==h&&-1!==r);return l}_clip(t){if(0===t&&1===this.delaunay.hull.length)return[this.xmax,this.ymin,this.xmax,this.ymax,this.xmin,this.ymax,this.xmin,this.ymin];const i=this._cell(t);if(null===i)return null;const{vectors:e}=this,n=4*t;return e[n]||e[n+1]?this._clipInfinite(t,i,e[n],e[n+1],e[n+2],e[n+3]):this._clipFinite(t,i)}_clipFinite(t,i){const e=i.length;let n,s,h,l,r,o=null,a=i[e-2],c=i[e-1],u=this._regioncode(a,c);for(let _=0;_<e;_+=2)if(n=a,s=c,a=i[_],c=i[_+1],h=u,u=this._regioncode(a,c),0===h&&0===u)l=r,r=0,o?o.push(a,c):o=[a,c];else{let i,e,_,f,d;if(0===h){if(null===(i=this._clipSegment(n,s,a,c,h,u)))continue;[e,_,f,d]=i}else{if(null===(i=this._clipSegment(a,c,n,s,u,h)))continue;[f,d,e,_]=i,l=r,r=this._edgecode(e,_),l&&r&&this._edge(t,l,r,o,o.length),o?o.push(e,_):o=[e,_]}l=r,r=this._edgecode(f,d),l&&r&&this._edge(t,l,r,o,o.length),o?o.push(f,d):o=[f,d]}if(o)l=r,r=this._edgecode(o[0],o[1]),l&&r&&this._edge(t,l,r,o,o.length);else if(this.contains(t,(this.xmin+this.xmax)/2,(this.ymin+this.ymax)/2))return[this.xmax,this.ymin,this.xmax,this.ymax,this.xmin,this.ymax,this.xmin,this.ymin];return o}_clipSegment(t,i,e,n,s,h){for(;;){if(0===s&&0===h)return[t,i,e,n];if(s&h)return null;let l,r,o=s||h;8&o?(l=t+(e-t)*(this.ymax-i)/(n-i),r=this.ymax):4&o?(l=t+(e-t)*(this.ymin-i)/(n-i),r=this.ymin):2&o?(r=i+(n-i)*(this.xmax-t)/(e-t),l=this.xmax):(r=i+(n-i)*(this.xmin-t)/(e-t),l=this.xmin),s?(t=l,i=r,s=this._regioncode(t,i)):(e=l,n=r,h=this._regioncode(e,n))}}_clipInfinite(t,i,e,n,s,h){let l,r=Array.from(i);if((l=this._project(r[0],r[1],e,n))&&r.unshift(l[0],l[1]),(l=this._project(r[r.length-2],r[r.length-1],s,h))&&r.push(l[0],l[1]),r=this._clipFinite(t,r))for(let i,e=0,n=r.length,s=this._edgecode(r[n-2],r[n-1]);e<n;e+=2)i=s,s=this._edgecode(r[e],r[e+1]),i&&s&&(e=this._edge(t,i,s,r,e),n=r.length);else this.contains(t,(this.xmin+this.xmax)/2,(this.ymin+this.ymax)/2)&&(r=[this.xmin,this.ymin,this.xmax,this.ymin,this.xmax,this.ymax,this.xmin,this.ymax]);return r}_edge(t,i,e,n,s){for(;i!==e;){let e,h;switch(i){case 5:i=4;continue;case 4:i=6,e=this.xmax,h=this.ymin;break;case 6:i=2;continue;case 2:i=10,e=this.xmax,h=this.ymax;break;case 10:i=8;continue;case 8:i=9,e=this.xmin,h=this.ymax;break;case 9:i=1;continue;case 1:i=5,e=this.xmin,h=this.ymin}n[s]===e&&n[s+1]===h||!this.contains(t,e,h)||(n.splice(s,0,e,h),s+=2)}return s}_project(t,i,e,n){let s,h,l,r=1/0;if(n<0){if(i<=this.ymin)return null;(s=(this.ymin-i)/n)<r&&(l=this.ymin,h=t+(r=s)*e)}else if(n>0){if(i>=this.ymax)return null;(s=(this.ymax-i)/n)<r&&(l=this.ymax,h=t+(r=s)*e)}if(e>0){if(t>=this.xmax)return null;(s=(this.xmax-t)/e)<r&&(h=this.xmax,l=i+(r=s)*n)}else if(e<0){if(t<=this.xmin)return null;(s=(this.xmin-t)/e)<r&&(h=this.xmin,l=i+(r=s)*n)}return[h,l]}_edgecode(t,i){return(t===this.xmin?1:t===this.xmax?2:0)|(i===this.ymin?4:i===this.ymax?8:0)}_regioncode(t,i){return(t<this.xmin?1:t>this.xmax?2:0)|(i<this.ymin?4:i>this.ymax?8:0)}}const d=2*Math.PI;function g(t,i,e){return[t+Math.sin(t+i)*e,i+Math.cos(t-i)*e]}class y{constructor(t){this._delaunator=new n(t),this.inedges=new Int32Array(t.length/2),this._hullIndex=new Int32Array(t.length/2),this.points=this._delaunator.coords,this._init()}update(){return this._delaunator.update(),this._init(),this}_init(){const t=this._delaunator,i=this.points;if(t.hull&&t.hull.length>2&&function(t,i){let e,n,s=t.length,h=i[2*t[s-1]],l=i[2*t[s-1]+1],r=0;for(let o=0;o<s;o++)e=h,r+=(n=l)*(h=i[2*t[o]])-e*(l=i[2*t[o]+1]);return r/2}(t.hull,i)<1e-10){this.collinear=Int32Array.from({length:i.length/2},(t,i)=>i).sort((t,e)=>i[2*t]-i[2*e]||i[2*t+1]-i[2*e+1]);const t=this.collinear[0],e=this.collinear[this.collinear.length-1],s=[i[2*t],i[2*t+1],i[2*e],i[2*e+1]],h=1e-8*Math.sqrt((s[3]-s[1])**2+(s[2]-s[0])**2);for(let t=0,e=i.length/2;t<e;++t){const e=g(i[2*t],i[2*t+1],h);i[2*t]=e[0],i[2*t+1]=e[1]}this._delaunator=new n(i)}else delete this.collinear;const e=this.halfedges=this._delaunator.halfedges,s=this.hull=this._delaunator.hull,h=this.triangles=this._delaunator.triangles,l=this.inedges.fill(-1),r=this._hullIndex.fill(-1);for(let t=0,i=e.length;t<i;++t){const i=h[t%3==2?t-2:t+1];-1!==e[t]&&-1!==l[i]||(l[i]=t)}for(let t=0,i=s.length;t<i;++t)r[s[t]]=t;s.length<=2&&s.length>0&&(this.triangles=new Int32Array(3).fill(-1),this.halfedges=new Int32Array(3).fill(-1),this.triangles[0]=s[0],this.triangles[1]=s[1],this.triangles[2]=s[1],l[s[0]]=1,2===s.length&&(l[s[1]]=0))}voronoi(t){return new f(this,t)}*neighbors(t){const{inedges:i,hull:e,_hullIndex:n,halfedges:s,triangles:h}=this;if(this.collinear){const i=this.collinear.indexOf(t);return i>0&&(yield this.collinear[i-1]),void(i<this.collinear.length-1&&(yield this.collinear[i+1]))}const l=i[t];if(-1===l)return;let r=l,o=-1;do{if(yield o=h[r],h[r=r%3==2?r-2:r+1]!==t)return;if(-1===(r=s[r])){const i=e[(n[t]+1)%e.length];return void(i!==o&&(yield i))}}while(r!==l)}find(t,i,e=0){if((t=+t)!=t||(i=+i)!=i)return-1;const n=e;let s;for(;(s=this._step(e,t,i))>=0&&s!==e&&s!==n;)e=s;return s}_step(t,i,e){const{inedges:n,points:s}=this;if(-1===n[t]||!s.length)return(t+1)%(s.length>>1);let h=t,l=(i-s[2*t])**2+(e-s[2*t+1])**2;for(const n of this.neighbors(t)){const t=(i-s[2*n])**2+(e-s[2*n+1])**2;t<l&&(l=t,h=n)}return h}render(t){const i=null==t?t=new u:void 0,{points:e,halfedges:n,triangles:s}=this;for(let i=0,h=n.length;i<h;++i){const h=n[i];if(h<i)continue;const l=2*s[i],r=2*s[h];t.moveTo(e[l],e[l+1]),t.lineTo(e[r],e[r+1])}return this.renderHull(t),i&&i.value()}renderPoints(t,i=2){const e=null==t?t=new u:void 0,{points:n}=this;for(let e=0,s=n.length;e<s;e+=2){const s=n[e],h=n[e+1];t.moveTo(s+i,h),t.arc(s,h,i,0,d)}return e&&e.value()}renderHull(t){const i=null==t?t=new u:void 0,{hull:e,points:n}=this,s=2*e[0],h=e.length;t.moveTo(n[s],n[s+1]);for(let i=1;i<h;++i){const s=2*e[i];t.lineTo(n[s],n[s+1])}return t.closePath(),i&&i.value()}hullPolygon(){const t=new _;return this.renderHull(t),t.value()}renderTriangle(t,i){const e=null==i?i=new u:void 0,{points:n,triangles:s}=this,h=2*s[t*=3],l=2*s[t+1],r=2*s[t+2];return i.moveTo(n[h],n[h+1]),i.lineTo(n[l],n[l+1]),i.lineTo(n[r],n[r+1]),i.closePath(),e&&e.value()}*trianglePolygons(){const{triangles:t}=this;for(let i=0,e=t.length/3;i<e;++i)yield this.trianglePolygon(i)}trianglePolygon(t){const i=new _;return this.renderTriangle(t,i),i.value()}}y.from=function(t,i=function(t){return t[0]},e=function(t){return t[1]},n){return new y("length"in t?function(t,i,e,n){const s=t.length,h=new Float64Array(2*s);for(let l=0;l<s;++l){const s=t[l];h[2*l]=i.call(n,s,l,t),h[2*l+1]=e.call(n,s,l,t)}return h}(t,i,e,n):Float64Array.from(function*(t,i,e,n){let s=0;for(const h of t)yield i.call(n,h,s,t),yield e.call(n,h,s,t),++s}(t,i,e,n)))},t.Delaunay=y,t.Voronoi=f,Object.defineProperty(t,"__esModule",{value:!0})});

package.json

 {
   "name": "d3-delaunay",
-  "version": "5.0.2",
+  "version": "5.1.0",
   "description": "Compute the Voronoi diagram of a set of two-dimensional points.",
@@ -5,0 +5,0 @@ "keywords": [

README.md

@@ -135,3 +135,3 @@ # d3-delaunay
 
-Updates the triangulation after the points have been modified in-place — useful for Lloyd’s relaxation.
+Updates the triangulation after the points have been modified in-place.
 
@@ -194,1 +194,6 @@ <a href="#delaunay_voronoi" name="delaunay_voronoi">#</a> <i>delaunay</i>.<b>voronoi</b>([<i>bounds</i>]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
 Returns the convex, closed polygon [[*x0*, *y0*], [*x1*, *y1*], …, [*x0*, *y0*]] representing the cell for the specified point *i*.
+
+<a href="#voronoi_update" name="voronoi_update">#</a> <i>voronoi</i>.<b>update</b>() [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+Updates the Voronoi diagram and underlying triangulation after the points have been modified in-place — useful for Lloyd’s relaxation.
+

src/delaunay.js

@@ -47,2 +47,3 @@ import Delaunator from "delaunator";
     this._init();
+    return this;
   }
@@ -49,0 +50,0 @@ _init() {

src/voronoi.js

@@ -7,9 +7,19 @@ import Path from "./path.js";
     if (!((xmax = +xmax) >= (xmin = +xmin)) || !((ymax = +ymax) >= (ymin = +ymin))) throw new Error("invalid bounds");
-    const {points, hull, triangles} = this.delaunay = delaunay;
-    const circumcenters = this.circumcenters = new Float64Array(triangles.length / 3 * 2);
-    const vectors = this.vectors = new Float64Array(points.length * 2);
+    this.delaunay = delaunay;
+    this._circumcenters = new Float64Array(delaunay.points.length * 2);
+    this.vectors = new Float64Array(delaunay.points.length * 2);
     this.xmax = xmax, this.xmin = xmin;
     this.ymax = ymax, this.ymin = ymin;
+    this._init();
+  }
+  update() {
+    this.delaunay.update();
+    this._init();
+    return this;
+  }
+  _init() {
+    const {delaunay: {points, hull, triangles}, vectors} = this;
 
     // Compute circumcenters.
+    const circumcenters = this.circumcenters = this._circumcenters.subarray(0, triangles.length / 3 * 2);
     for (let i = 0, j = 0, n = triangles.length; i < n; i += 3, j += 2) {
@@ -16,0 +26,0 @@ const t1 = triangles[i] * 2;

Fixed alerts

New author

Supply chain risk

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

87390

increased by1.09%

Lines of code

1564

increased by1.49%

Number of lines in readme file

198

increased by2.59%

Number of medium supply chain risk alerts

0

decreased by-100%

No dependency changes