iceye-angular-cesium-fork/esm2015/lib/angular-cesium/services/drawers/arc-drawer/arc-drawer.service.js

Angular library for working with Cesium.

import { Injectable } from '@angular/core';
import { CesiumService } from '../../cesium/cesium.service';
import { PrimitivesDrawerService } from '../primitives-drawer/primitives-drawer.service';
import { GeoUtilsService } from '../../geo-utils/geo-utils.service';
/**
 +  This drawer is responsible for drawing an arc over the Cesium map.
 +  This implementation uses simple PolylineGeometry and Primitive parameters.
 +  This doesn't allow us to change the position, color, etc.. of the arc but setShow only.
 */
export class ArcDrawerService extends PrimitivesDrawerService {
    constructor(cesiumService) {
        super(Cesium.PolylineCollection, cesiumService);
    }
    _calculateArcPositions(cesiumProps) {
        const quality = cesiumProps.quality || 18;
        const delta = (cesiumProps.delta) / quality;
        const pointsArray = [];
        for (let i = 0; i < quality + 1; ++i) {
            const point = GeoUtilsService.pointByLocationDistanceAndAzimuth(cesiumProps.center, cesiumProps.radius, cesiumProps.angle + delta * i, true);
            pointsArray.push(point);
        }
        return pointsArray;
    }
    _calculateTriangle(cesiumProps) {
        return [
            cesiumProps.center,
            GeoUtilsService.pointByLocationDistanceAndAzimuth(cesiumProps.center, cesiumProps.radius, cesiumProps.angle, true)
        ];
    }
    _calculateArc(cesiumProps) {
        const arcPoints = this._calculateArcPositions(cesiumProps);
        return cesiumProps.drawEdges ? arcPoints.concat(this._calculateTriangle(cesiumProps)) : arcPoints;
    }
    add(cesiumProps) {
        cesiumProps.positions = this._calculateArc(cesiumProps);
        if (cesiumProps.color) {
            const material = Cesium.Material.fromType('Color');
            material.uniforms.color = cesiumProps.color;
            cesiumProps.material = material;
        }
        return this._cesiumCollection.add(cesiumProps);
    }
    update(primitive, cesiumProps) {
        if (!cesiumProps.constantColor && cesiumProps.color &&
            !primitive.material.uniforms.color.equals(cesiumProps.color)) {
            primitive.material.uniforms.color = cesiumProps.color;
        }
        primitive.width = cesiumProps.width !== undefined ? cesiumProps.width : primitive.width;
        primitive.show = cesiumProps.show !== undefined ? cesiumProps.show : primitive.show;
        primitive.distanceDisplayCondition = cesiumProps.distanceDisplayCondition !== undefined ?
            cesiumProps.distanceDisplayCondition : primitive.distanceDisplayCondition;
        primitive.positions = this._calculateArc(cesiumProps);
        return primitive;
    }
}
ArcDrawerService.decorators = [
    { type: Injectable }
];
ArcDrawerService.ctorParameters = () => [
    { type: CesiumService }
];
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