mapillary-js/src/component/tag/handlers/CreatePolygonHandler.ts

WebGL JavaScript library for displaying street level imagery from mapillary.com

import {Subject} from "rxjs";

import {
    CreateVertexHandler,
    OutlineCreateTag,
    PolygonGeometry,
} from "../../../Component";
import {Transform} from "../../../Geo";

export class CreatePolygonHandler extends CreateVertexHandler {
    protected get _create$(): Subject<number[]> {
        return this._tagCreator.createPolygon$;
    }

    protected _addPoint(tag: OutlineCreateTag, basicPoint: number[]): void {
        tag.addPoint(basicPoint);
    }

    protected _getNameExtension(): string {
        return "create-polygon";
    }

    protected _setVertex2d(tag: OutlineCreateTag, basicPoint: number[], transform: Transform): void {
        tag.geometry.setVertex2d((<PolygonGeometry>tag.geometry).polygon.length - 2, basicPoint, transform);
    }
}

export default CreatePolygonHandler;