geoplex/icosahedron/centroid.js

Nested spherical triangles based on a regular icosahedron model of Earth; a library for use with rwt-orthographic-earth GIS layers

/* Copyright (c) 2022 Read Write Tools. */
import expect from'softlib/expect.js';export default class Centroid{constructor(t,e,i,s,o){expect(t,'IndexedCoordinates'),expect(e,'String'),expect(i,'Number'),expect(s,'Number'),expect(o,'Number'),this.indexedCoordinates=t,this.uid=e,this.terrasect=i,this.iceX=s,this.iceY=o,this.bias=1,this.enclosingFace=null,this.neighboringCentroids=[]}get formattedID(){return`C(${this.uid})`}get longitude(){return this.indexedCoordinates.getLongitude(this.iceX)}get latitude(){return this.indexedCoordinates.getLatitude(this.iceY)}getPoint(t){return[this.longitude,this.latitude]}crossesDateline(t){return expect(t,'Centroid'),!(Math.abs(this.positiveLongitude-t.positiveLongitude)>180)&&(this.longitude>0&&t.longitude<0||this.longitude<0&&t.longitude>0)}get positiveLongitude(){return this.longitude>=0?this.longitude:this.longitude+360}accumulateCentroidStatistics(t,e){for(expect(t,'Array'),expect(e,'Boolean');this.terrasect>t.length-1;)t.push(new Map);var i=t[this.terrasect];const s=this.bias.toFixed(2),o=(100*this.bias).toFixed(0)+'%';e&&console.log(`terrasect:${this.terrasect}  bias:${o}`);var r=i.get(s);null==r&&(r=0),i.set(s,r+1)}}