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earcut-2.2.1-b404d9e6.js

earcut-2.2.1-b404d9e6.js 7.0 KB
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  1. /**
    2. 

  2.  * Cesium - https://github.com/CesiumGS/cesium
    3. 

  3.  *
    4. 

  4.  * Copyright 2011-2020 Cesium Contributors
    5. 

  5.  *
    6. 

  6.  * Licensed under the Apache License, Version 2.0 (the "License");
    7. 

  7.  * you may not use this file except in compliance with the License.
    8. 

  8.  * You may obtain a copy of the License at
    9. 

  9.  *
    10. 

  10.  * http://www.apache.org/licenses/LICENSE-2.0
    11. 

  11.  *
    12. 

  12.  * Unless required by applicable law or agreed to in writing, software
    13. 

  13.  * distributed under the License is distributed on an "AS IS" BASIS,
    14. 

  14.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15. 

  15.  * See the License for the specific language governing permissions and
    16. 

  16.  * limitations under the License.
    17. 

  17.  *
    18. 

  18.  * Columbus View (Pat. Pend.)
    19. 

  19.  *
    20. 

  20.  * Portions licensed separately.
    21. 

  21.  * See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
    22. 

  22.  */
    23. 

  23. define(["exports"],function(e){function n(e,n,t){t=t||2;var r,x,i,v,u,f,y,o=n&&n.length,p=o?n[0]*t:e.length,a=s(e,0,p,t,!0),h=[];if(!a||a.next===a.prev)return h;if(o&&(a=function(e,n,t,r){var x,i,v,u,f,y=[];for(x=0,i=n.length;x<i;x++)v=n[x]*r,u=x<i-1?n[x+1]*r:e.length,(f=s(e,v,u,r,!1))===f.next&&(f.steiner=!0),y.push(w(f));for(y.sort(g),x=0;x<y.length;x++)d(y[x],t),t=c(t,t.next);return t}(e,n,a,t)),e.length>80*t){r=i=e[0],x=v=e[1];for(var l=t;l<p;l+=t)(u=e[l])<r&&(r=u),(f=e[l+1])<x&&(x=f),i<u&&(i=u),v<f&&(v=f);y=0!==(y=Math.max(i-r,v-x))?1/y:0}return Z(a,h,t,r,x,y),h}function s(e,n,t,r,x){var i,v;if(x===0<A(e,n,t,r))for(i=n;i<t;i+=r)v=u(i,e[i],e[i+1],v);else for(i=t-r;n<=i;i-=r)v=u(i,e[i],e[i+1],v);return v&&l(v,v.next)&&(q(v),v=v.next),v}function c(e,n){if(!e)return e;n||(n=e);var t,r=e;do{if(t=!1,r.steiner||!l(r,r.next)&&0!==b(r.prev,r,r.next))r=r.next;else{if(q(r),(r=n=r.prev)===r.next)break;t=!0}}while(t||r!==n);return n}function 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x}n.deviation=function(e,n,t,r){var x=n&&n.length,i=x?n[0]*t:e.length,v=Math.abs(A(e,0,i,t));if(x)for(var u=0,f=n.length;u<f;u++){var y=n[u]*t,o=u<f-1?n[u+1]*t:e.length;v-=Math.abs(A(e,y,o,t))}var p=0;for(u=0;u<r.length;u+=3){var a=r[u]*t,h=r[u+1]*t,l=r[u+2]*t;p+=Math.abs((e[a]-e[l])*(e[h+1]-e[a+1])-(e[a]-e[h])*(e[l+1]-e[a+1]))}return 0===v&&0===p?0:Math.abs((p-v)/v)},n.flatten=function(e){for(var n=e[0][0].length,t={vertices:[],holes:[],dimensions:n},r=0,x=0;x<e.length;x++){for(var i=0;i<e[x].length;i++)for(var v=0;v<n;v++)t.vertices.push(e[x][i][v]);0<x&&(r+=e[x-1].length,t.holes.push(r))}return t},e.earcut=n});
    24.