thematic-earth/joe/catalog/gcs-spatial-file.class.js

HTML-based, whole-Earth thematic maps using locally hosted data layers

/* Copyright (c) 2023 Read Write Tools. Legal use subject to the Thematic Earth Software License Agreement. */
import ExternalSpatialFile from'../catalog/external-spatial-file.class.js';import PointFeature from'../features/point-feature.class.js';import LineFeature from'../features/line-feature.class.js';import PolygonFeature from'../features/polygon-feature.class.js';import ProjectedPoint from'../projection/projected-point.class.js';import GcsHoldingArea from'../../gcslib/gcs/gcs-holding-area.class.js';import*as GcsParser from'../../gcslib/api/gcs-parser.js';import expect from'../dev/expect.js';import terminal from'../dev/terminal.js';export default class GcsSpatialFile extends ExternalSpatialFile{constructor(e){super(e),this.format='',Object.seal(this)}async retrieveData(e,t,r){expect(e,'String'),expect(t,'String'),expect(r,'Object'),this.replaceAppend=e,this.url=t,this.featureKey=r.featureKey||'',this.format=r.format||this.impliedFormat(t),'replace'==this.replaceAppend&&(this.featureLookupMap=new Map,this.featurePolygons=[],this.featureLines=[],this.featurePoints=[]);try{var i=await fetch(t,{cache:'no-cache',referrerPolicy:'no-referrer'});if(200!=i.status&&304!=i.status)throw new Error(`Request for ${t} returned with ${i.status}`);if(['geojson','gfe','ice','tae'].includes(this.format)){const e=await i.text();this.handleTextData(e,r)}else if(['gfebin','icebin','taebin'].includes(this.format)){const e=await i.arrayBuffer();this.handleBinaryData(e,r)}else terminal.abnormal('format must be one of \'geojson\', \'gfe\', \'gfebin\', \'ice\', \'icebin\', \'tae\', \'taebin\'')}catch(e){terminal.caught(e)}this.localPointsNeedGeoCoords=!0,this.localPointsNeedProjection=!0,this.localPointsNeedTransformation=!0,this.localPointsNeedPlacement=!0,this.thematicEarthElement.signal.broadcast('catalog/spatialFileAdded',{spatialFileType:'gcs',format:this.format,url:t,options:r})}impliedFormat(e){return expect(e,'String'),-1!=e.indexOf('.geojson')?'geojson':-1!=e.indexOf('.gfebin')?'gfebin':-1!=e.indexOf('.gfe')?'gfe':-1!=e.indexOf('.icebin')?'icebin':-1!=e.indexOf('.ice')?'ice':-1!=e.indexOf('.taebin')?'taebin':-1!=e.indexOf('.tae')?'tae':''}handleTextData(e,t){expect(e,'String'),expect(t,'Object');var r=new GcsHoldingArea;'geojson'==this.format?GcsParser.parseGeojson(r,e,t):'gfe'==this.format?GcsParser.parseGfe(r,e,t):'ice'==this.format?GcsParser.parseIce(r,e,t):'tae'==this.format&&GcsParser.parseTae(r,e,t),this.bridgeGcsioToFeatures(r,t.featureKey)}handleBinaryData(e,t){expect(e,'ArrayBuffer'),expect(t,'Object');var r=new GcsHoldingArea;'gfebin'==this.format?GcsParser.parseGfeBinary(r,e,t):'icebin'==this.format?GcsParser.parseIceBinary(r,e,t):'taebin'==this.format&&GcsParser.parseTaeBinary(r,e,t),this.bridgeGcsioToFeatures(r,t.featureKey)}bridgeGcsioToFeatures(e,t){expect(e,'GcsHoldingArea'),this.bridgePolygons(e.gcsFeaturePolygons),this.bridgeLines(e.gcsFeatureLines),this.bridgePoints(e.gcsFeaturePoints)}bridgePolygons(e,t){expect(e,'Array');for(let n=0;n<e.length;n++){var r=e[n],i=new PolygonFeature;for(let e=0;e<r.outerRing.length;e++)i.outerRing.push(new ProjectedPoint(r.outerRing[e].latitude,r.outerRing[e].longitude));for(let e=0;e<r.innerRings.length;e++){var a=r.innerRings[e],s=new PolygonFeature;for(let e=0;e<a.length;e++)s.outerRing.push(new ProjectedPoint(a[e].latitude,a[e].longitude));i.innerRings.push(s),this.addFeatureToLookupMap(s)}Object.assign(i.kvPairs,r.kvPairs),t&&null!=i.kvPairs[t]&&(i.featureName=i.kvPairs[t]),this.featurePolygons.push(i),this.addFeatureToLookupMap(i)}}bridgeLines(e,t){expect(e,'Array');for(let a=0;a<e.length;a++){var r=e[a],i=new LineFeature;for(let e=0;e<r.lineSegment.length;e++)i.lineSegment.push(new ProjectedPoint(r.lineSegment[e].latitude,r.lineSegment[e].longitude));Object.assign(i.kvPairs,r.kvPairs),t&&null!=i.kvPairs[t]&&(i.featureName=i.kvPairs[t]),this.featureLines.push(i),this.addFeatureToLookupMap(i)}}bridgePoints(e,t){expect(e,'Array');for(let a=0;a<e.length;a++){var r=e[a],i=new PointFeature;i.discretePoint=new ProjectedPoint(r.discretePoint.latitude,r.discretePoint.longitude),Object.assign(i.kvPairs,r.kvPairs),t&&null!=i.kvPairs[t]&&(i.featureName=i.kvPairs[t]),this.featurePoints.push(i),this.addFeatureToLookupMap(i)}}}