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45 lines
1.8 KiB
TypeScript
45 lines
1.8 KiB
TypeScript
import FineArrow from './fine-arrow';
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import * as Utils from '../utils';
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// @ts-ignore
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import { Cartesian3 } from '@examples/cesium';
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import { PolygonStyle } from '../interface';
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export default class AssaultDirection extends FineArrow {
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points: Cartesian3[] = [];
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arrowLengthScale: number = 5;
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maxArrowLength: number = 2;
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tailWidthFactor: number;
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neckWidthFactor: number;
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headWidthFactor: number;
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headAngle: number;
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neckAngle: number;
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constructor(cesium: any, viewer: any, style?: PolygonStyle) {
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super(cesium, viewer, style);
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this.cesium = cesium;
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this.tailWidthFactor = 0.08;
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this.neckWidthFactor = 0.1;
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this.headWidthFactor = 0.13;
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this.headAngle = Math.PI / 4;
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this.neckAngle = Math.PI * 0.17741;
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this.setState('drawing');
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}
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createPolygon(positions: Cartesian3[]) {
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const [p1, p2] = positions.map(this.cartesianToLnglat);
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const len = Utils.getBaseLength([p1, p2]) * 1.5;
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const tailWidth = len * this.tailWidthFactor;
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const neckWidth = len * this.neckWidthFactor;
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const headWidth = len * this.headWidthFactor;
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const tailLeft = Utils.getThirdPoint(p2, p1, Math.PI / 2, tailWidth, true);
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const tailRight = Utils.getThirdPoint(p2, p1, Math.PI / 2, tailWidth, false);
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const headLeft = Utils.getThirdPoint(p1, p2, this.headAngle, headWidth, false);
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const headRight = Utils.getThirdPoint(p1, p2, this.headAngle, headWidth, true);
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const neckLeft = Utils.getThirdPoint(p1, p2, this.neckAngle, neckWidth, false);
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const neckRight = Utils.getThirdPoint(p1, p2, this.neckAngle, neckWidth, true);
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const points = [...tailLeft, ...neckLeft, ...headLeft, ...p2, ...headRight, ...neckRight, ...tailRight, ...p1];
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const cartesianPoints = this.cesium.Cartesian3.fromDegreesArray(points);
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return cartesianPoints;
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}
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}
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