I have an arcGIS map in angular 10. The polygon is plotting on the map based on the wkid and the projected ring values. I need to re draw the polygon when click on the map. click event collect the ID from the map with the hottest() and I need to redraw the polygon. I am using 'hitself.router.navigateByUrl(dashurl);' to reload the page to show the updated polygon. But the polygon not drawing on the map corresponding to the id retrieved. I found the value of the wkid and the rings are not updating properly. Am I doing anything wrong? Please find my code below.
import {
Component,
OnInit,
ViewChild,
ElementRef,
Input,
Output,
EventEmitter,
OnDestroy,
NgZone
} from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { GisService } from '../shared/service/gis.service';
import { ActivatedRoute, Router } from '@angular/router';
import { map } from 'rxjs/operators';
import { loadScript, loadModules } from 'esri-loader';
import esri = __esri; // Esri TypeScript Types
import { empty } from 'rxjs';
import { AppConfig } from '../shared/config/app.config';
@Component({
selector: 'app-esri-map',
templateUrl: './esri-map.component.html',
styleUrls: ['./esri-map.component.css'],
})
export class EsriMapComponent implements OnInit, OnDestroy {
@Output() mapLoadedEvent = new EventEmitter<boolean>();
@ViewChild('mapViewNode', { static: true }) private mapViewEl: ElementRef;
view: any;
dynamicRings: any;
wkid: any;
id: any;
loadingmap = true;
// to keep loaded esri modules
esriModules = {
graphic: null,
geometry: {
Polygon: null,
SpatialReference: null,
support: { webMercatorUtils: null },
},
tasks: {
GeometryService: null,
support: { ProjectParameters: null },
},
};
private _zoom = 20;
private _basemap = 'hybrid';
private _loaded = false;
private _view: esri.MapView = null;
private _nextBasemap = 'streets';
public _selectedLayer: Array<string>;
public layersMapIdxArray: string[] = ['0', '1', '2'];
public mapalllayerview: boolean;
public layersDic = {};
private readonly esriMapUri: string;
get mapLoaded(): boolean {
return this._loaded;
}
public onLayerChange(val: Array<string>) {
console.log(val);
// hide all the layers before ahowing the selected layers
for (const al of this.layersMapIdxArray) {
this.layersDic[al].visible = false;
}
// this.mapalllayerview = false;
this._selectedLayer = val;
// Add the layer 15 to get the ID eve all other layers are disabled.
if (this._selectedLayer.indexOf("15") === -1) {
this._selectedLayer.push('15');
}
for (const v of val) {
this.layersDic[v].visible = true;
}
}
constructor(
private gisService: GisService,
private http: HttpClient,
private route: ActivatedRoute,
private router: Router,
private zone: NgZone,
private appConfig: AppConfig) {
}
async initializeMap() {
try {
loadScript();
// Load the modules for the ArcGIS API for JavaScript
const [
EsriMap,
EsriMapView,
Polygon,
SpatialReference,
webMercatorUtils,
GeometryService,
ProjectParameters,
FeatureLayer,
BasemapToggle,
BasemapGallery,
Graphic,
] = await loadModules([
'esri/Map',
'esri/views/MapView',
'esri/geometry/Polygon',
'esri/geometry/SpatialReference',
'esri/geometry/support/webMercatorUtils',
'esri/tasks/GeometryService',
'esri/tasks/support/ProjectParameters',
'esri/layers/FeatureLayer',
'esri/widgets/BasemapToggle',
'esri/widgets/BasemapGallery',
'esri/Graphic',
]);
// save the modules on a property for later
this.esriModules.geometry.Polygon = Polygon;
this.esriModules.geometry.SpatialReference = SpatialReference;
this.esriModules.geometry.support.webMercatorUtils = webMercatorUtils;
this.esriModules.tasks.GeometryService = GeometryService;
this.esriModules.tasks.support.ProjectParameters = ProjectParameters;
this.esriModules.graphic = Graphic;
// Configure the Map
const mapProperties: esri.MapProperties = {
basemap: this._basemap,
};
const map: esri.Map = new EsriMap(mapProperties);
// Initialize the MapView
const mapViewProperties: esri.MapViewProperties = {
container: this.mapViewEl.nativeElement,
// center: this._center,
zoom: this._zoom,
map: map,
};
this._view = new EsriMapView(mapViewProperties);
// Add layers to the map according to the selection
// The layer 15 will be the stack at the top of the layers so 15 will be consider first.I c
this.layersMapIdxArray.push('15');
console.log(this.layersMapIdxArray);
for (const idx of this.layersMapIdxArray) {
this.layersDic[idx] = new FeatureLayer({
url: `${this.esriMapUri}/${idx}`,
visible: this.mapalllayerview,
outFields: ['*'],
});
map.add(this.layersDic[idx]);
}
// Basemap toglle section
var basemapToggle = new BasemapToggle({
view: this._view,
nextBasemap: this._nextBasemap,
});
this._view.ui.add(basemapToggle, 'bottom-right');
// Load details of ID when click on the map
let hitself = this;
this._view.on('click', function (event) {
hitself._view
.hitTest(event, { exclude: hitself._view.graphics })
.then(function (response) {
console.log(response);
if (
typeof response.results !== 'undefined' &&
response.results.length > 0
) {
var graphic = response.results[0].graphic;
var attributes = graphic.attributes;
var category = attributes.ID;
var wind = attributes.ADDRESS;
var name = attributes.ADDRESS;
hitself.id = category;
var dashurl = 'dashboard/' + hitself.id;
hitself.zone.run(() => {
hitself.router.navigateByUrl(dashurl);
});
}
});
return;
});
await this._view.when(); // wait for map to load
return this._view;
} catch (error) {
console.error('EsriLoader: ', error);
}
}
// point geometry extent is null
zoomToGeometry(geom) {
console.log(`Original Geometry: ${JSON.stringify(geom.toJSON())}`);
const geomSer = new this.esriModules.tasks.GeometryService(
'http://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer'
);
const outSpatialReference = new this.esriModules.geometry.SpatialReference({
wkid: 102100,
});
const params = new this.esriModules.tasks.support.ProjectParameters({
geometries: [geom],
outSpatialReference,
});
const self = this;
geomSer
.project(params)
.then(function (result) {
const projectedGeom = result[0];
if (!projectedGeom) {
return;
}
// console.log(
// `Projected Geometry: ${JSON.stringify(projectedGeom.toJSON())}`
// );
return projectedGeom;
})
.then(function (polly) {
console.log(self.esriModules.graphic);
self._view.graphics.add(
new self.esriModules.graphic({
geometry: polly,
symbol: {
type: 'simple-fill',
style: 'solid',
color: [255, 0, 0, 0.1],
outline: {
width: 2,
color: [255, 0, 0, 1],
},
},
})
);
self._view.extent = polly.extent.clone().expand(3);
});
}
ngOnInit() {
this.route.paramMap.subscribe((params) => {
this.id = params.get('id');
this.gisService.getidDetails(this.id).subscribe((posts) => {
const get_wkid = posts[0]['spatialReference'];
this.wkid = get_wkid['wkid'];
const dynamicrings = posts[0]['features'];
this.dynamicRings = dynamicrings[0]['geometry']['rings'];
});
this._selectedLayer = ['1', '0', '2'];
// this.layersMapIdxArray = this._selectedLayer;
this.mapalllayerview = true;
this.initializeMap().then(() => {
// The map has been initialized
console.log('mapView ready: ', this._view.ready);
const geom = new this.esriModules.geometry.Polygon({
spatialReference: {
wkid: this.wkid, //102704,
},
rings: this.dynamicRings,
});
this.zoomToGeometry(geom);
console.log('mapView ready: ', this._view.ready);
this._loaded = this._view.ready;
this.mapLoadedEvent.emit(true);
this.loadingmap = false;
});
});
}
ngOnDestroy() {
if (this._view) {
// destroy the map view
this._view.container = null;
}
}
}