我们来构建视频图层

首先做定义

• export interface PVideoEntity{
• name?:string,
• entity:any,
• video:any,
• }

视频构建图层
```javascript

import { PVideoEntity } from './PVideoEntity';
import { Tuple } from "./Tuple";

export class VideoEntity extends Tuple {
type = "VideoEntity";
public video: any;
private _url: string = "";
constructor(option: PVideoEntity) {
super();
this.setVideoDOM(option.video);
this.createEntity(option.entity);
}
set stRotation(value) {
this.cesiumObj.polygon.stRotation = Cesium.Math.toRadians(value)
}
get stRotation() {
return Cesium.Math.toDegrees(this.cesiumObj.polygon.stRotation);
}
set url(value) {
this._url = value;
this.video.src = value;
this.cesiumObj.polygon.material = this.video;
}
get url() {
return this._url;
}

• set hierarchy(rings: any) {
• this.cesiumObj.polygon.hierarchy = Cesium.Cartesian3.fromDegreesArray(rings.flat())
• }
• get hierarchy() {
• let cartographic = Cesium.Ellipsoid.WGS84.cartesianToCartographic(this.cesiumObj.polygon.hierarchy);
• const x = Cesium.Math.toDegrees(cartographic.longitude);
• const y = Cesium.Math.toDegrees(cartographic.latitude);
• const z = cartographic.height;
• return { x, y, z };
• }
•  
• public addToMap(map: any): this {
• this.map = map;
• map.entities.add(this.cesiumObj);
• this.video.play();
• return this;
• }
• public removeByMap(destroy: boolean = true): this {
• if (this.cesiumObj) {
• this.map!.entities.remove(this.cesiumObj);
• this.video.pause();
• if (destroy) {
• this.video.src = "";
• this.video.load();
• this.video = null;
• }
• this.cesiumObj = null;
• this.map = null;
• }
• return this;
• }

 更多参考 https://xiaozhuanlan.com/topic/0518672394