90 lines
3.3 KiB
TypeScript
90 lines
3.3 KiB
TypeScript
import { Component, Input, OnChanges, OnInit, Optional, SimpleChanges } from '@angular/core';
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import { MapComponent } from './map.component';
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import { GeometryLinestringComponent } from './geom/geometrylinestring.component';
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import { GeometryPolygonComponent } from './geom/geometrypolygon.component';
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import { GeometryMultiPointComponent } from './geom/geometrymultipoint.component';
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import { GeometryMultiLinestringComponent } from './geom/geometrymultilinestring.component';
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import { GeometryMultiPolygonComponent } from './geom/geometrymultipolygon.component';
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import { Coordinate } from 'ol/coordinate';
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import { transform } from 'ol/proj';
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@Component({
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selector: 'aol-collection-coordinates',
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template: ` <div class="aol-collection-coordinates"></div> `,
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})
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export class CollectionCoordinatesComponent implements OnChanges, OnInit {
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@Input()
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coordinates: Coordinate[] | Coordinate[][] | Coordinate[][][];
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@Input()
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srid = 'EPSG:3857';
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private host: any;
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private mapSrid = 'EPSG:3857';
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constructor(
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private map: MapComponent,
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@Optional() geometryLinestring: GeometryLinestringComponent,
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@Optional() geometryPolygon: GeometryPolygonComponent,
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@Optional() geometryMultipoint: GeometryMultiPointComponent,
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@Optional() geometryMultilinestring: GeometryMultiLinestringComponent,
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@Optional() geometryMultipolygon: GeometryMultiPolygonComponent
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) {
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if (!!geometryLinestring) {
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this.host = geometryLinestring;
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} else if (!!geometryPolygon) {
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this.host = geometryPolygon;
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} else if (!!geometryMultipoint) {
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this.host = geometryMultipoint;
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} else if (!!geometryMultilinestring) {
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this.host = geometryMultilinestring;
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} else if (!!geometryMultipolygon) {
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this.host = geometryMultipolygon;
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} else {
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throw new Error('aol-collection-coordinates must be a child of a geometry component');
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}
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}
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ngOnInit() {
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this.map.instance.on('change:view', (e) => this.onMapViewChanged(e));
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this.mapSrid = this.map.instance.getView().getProjection().getCode();
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this.transformCoordinates();
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}
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ngOnChanges(changes: SimpleChanges) {
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this.transformCoordinates();
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}
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private onMapViewChanged(event) {
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this.mapSrid = event.target.get(event.key).getProjection().getCode();
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this.transformCoordinates();
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}
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private transformCoordinates() {
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let transformedCoordinates: Coordinate[] | Coordinate[][] | Coordinate[][][];
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if (this.srid === this.mapSrid) {
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transformedCoordinates = this.coordinates;
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} else {
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switch (this.host.componentType) {
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case 'geometry-linestring':
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case 'geometry-multipoint':
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transformedCoordinates = (this.coordinates as Coordinate[]).map((c) => transform(c, this.srid, this.mapSrid));
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break;
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case 'geometry-polygon':
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case 'geometry-multilinestring':
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transformedCoordinates = (this.coordinates as Coordinate[][]).map((cc) =>
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cc.map((c) => transform(c, this.srid, this.mapSrid))
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);
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break;
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case 'geometry-multipolygon':
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transformedCoordinates = (this.coordinates as Coordinate[][][]).map((ccc) =>
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ccc.map((cc) => cc.map((c) => transform(c, this.srid, this.mapSrid)))
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);
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break;
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}
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}
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this.host.instance.setCoordinates(transformedCoordinates);
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}
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}
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