@arcgis/core/layers/graphics/centroid.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.33/esri/copyright.txt for details.
*/
function t(t,n){return t?n?4:3:n?3:2}function n(n,I,u,o){if(!I?.lengths.length)return null;n.lengths.length&&(n.lengths.length=0),n.coords.length&&(n.coords.length=0);const N=n.coords,l=[],s=u?[Number.POSITIVE_INFINITY,Number.NEGATIVE_INFINITY,Number.POSITIVE_INFINITY,Number.NEGATIVE_INFINITY,Number.POSITIVE_INFINITY,Number.NEGATIVE_INFINITY]:[Number.POSITIVE_INFINITY,Number.NEGATIVE_INFINITY,Number.POSITIVE_INFINITY,Number.NEGATIVE_INFINITY],{lengths:c,coords:T}=I,f=t(u,o);let h=0;for(const t of c){const n=e(s,T,h,t,u,o);n&&l.push(n),h+=t*f}if(l.sort(((t,n)=>{let e=t[2]-n[2];return 0===e&&u&&(e=t[4]-n[4]),e})),l.length){let t=6*l[0][2];N[0]=l[0][0]/t,N[1]=l[0][1]/t,u&&(t=6*l[0][4],N[2]=0!==t?l[0][3]/t:0),(N[0]<s[0]||N[0]>s[1]||N[1]<s[2]||N[1]>s[3]||u&&(N[2]<s[4]||N[2]>s[5]))&&(N.length=0)}if(!N.length){const t=I.lengths[0]?r(T,0,c[0],u,o):null;if(!t)return null;N[0]=t[0],N[1]=t[1],u&&t.length>2&&(N[2]=t[2])}return n}function e(n,e,r,I,u,o){const N=t(u,o);let l=r,s=r+N,c=0,T=0,f=0,h=0,i=0;for(let t=0,g=I-1;t<g;t++,l+=N,s+=N){const t=e[l],r=e[l+1],I=e[l+2],o=e[s],N=e[s+1],E=e[s+2];let g=t*N-o*r;h+=g,c+=(t+o)*g,T+=(r+N)*g,u&&(g=t*E-o*I,f+=(I+E)*g,i+=g),t<n[0]&&(n[0]=t),t>n[1]&&(n[1]=t),r<n[2]&&(n[2]=r),r>n[3]&&(n[3]=r),u&&(I<n[4]&&(n[4]=I),I>n[5]&&(n[5]=I))}if(h>0&&(h*=-1),i>0&&(i*=-1),!h)return null;const E=[c,T,.5*h];return u&&(E[3]=f,E[4]=.5*i),E}function r(n,e,r,l,s){const c=t(l,s);let T=e,f=e+c,h=0,i=0,E=0,g=0;for(let t=0,b=r-1;t<b;t++,T+=c,f+=c){const t=n[T],e=n[T+1],r=n[T+2],s=n[f],c=n[f+1],b=n[f+2],m=l?u(t,e,r,s,c,b):I(t,e,s,c);if(m)if(h+=m,l){const n=N(t,e,r,s,c,b);i+=m*n[0],E+=m*n[1],g+=m*n[2]}else{const n=o(t,e,s,c);i+=m*n[0],E+=m*n[1]}}return h>0?l?[i/h,E/h,g/h]:[i/h,E/h]:r>0?l?[n[e],n[e+1],n[e+2]]:[n[e],n[e+1]]:null}function I(t,n,e,r){const I=e-t,u=r-n;return Math.sqrt(I*I+u*u)}function u(t,n,e,r,I,u){const o=r-t,N=I-n,l=u-e;return Math.sqrt(o*o+N*N+l*l)}function o(t,n,e,r){return[t+.5*(e-t),n+.5*(r-n)]}function N(t,n,e,r,I,u){return[t+.5*(r-t),n+.5*(I-n),e+.5*(u-e)]}export{n as getCentroidOptimizedGeometry,r as lineCentroid};