cesium开发之如何在vue项目中使用cesium,使用离线地图资源

npm cesium

<div id="container"></div>

this.viewer = new Cesium.Viewer("container", {
      geocoder: false,
      timeline: false,
      fullscreenButton: false,
      animation: false,
      shouldAnimate: true,
    });

this.viewer = new Cesium.Viewer("container", {
      imageryProvider: new Cesium.TileMapServiceImageryProvider({
        url: Cesium.buildModuleUrl("Assets/Textures/MyEarthII"),
      }),
      baseLayerPicker: false
    });

BaiduImageryProvider = function(options) {
    this._errorEvent = new Cesium.Event();
    this._tileWidth = 256;
    this._tileHeight = 256;
    this._maximumLevel = 18;
    this._minimumLevel = 1;
    let southwestInMeters = new Cesium.Cartesian2(-33554054, -33746824);
    let northeastInMeters = new Cesium.Cartesian2(33554054, 33746824);
    this._tilingScheme = new Cesium.WebMercatorTilingScheme({
        rectangleSouthwestInMeters: southwestInMeters,
        rectangleNortheastInMeters: northeastInMeters
    });
    this._rectangle = this._tilingScheme.rectangle;
    this._resource = Cesium.Resource.createIfNeeded(options.url);
    this._tileDiscardPolicy = undefined;
    this._credit = undefined;
    this._readyPromise = undefined;
};
 
Object.defineProperties(Cesium.gm.BaiduImageryProvider.prototype, {
    url: {
        get: function () {
            return this._resource.url;
        }
    },
    proxy: {
        get: function () {
            return this._resource.proxy;
        }
    },
    tileWidth: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('tileWidth must not be called before the imagery provider is ready.');
            }
            return this._tileWidth;
        }
    },
 
    tileHeight: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('tileHeight must not be called before the imagery provider is ready.');
            }
            return this._tileHeight;
        }
    },
 
    maximumLevel: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('maximumLevel must not be called before the imagery provider is ready.');
            }
            return this._maximumLevel;
        }
    },
 
    minimumLevel: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('minimumLevel must not be called before the imagery provider is ready.');
            }
            return this._minimumLevel;
        }
    },
 
    tilingScheme: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('tilingScheme must not be called before the imagery provider is ready.');
            }
            return this._tilingScheme;
        }
    },
 
    tileDiscardPolicy: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('tileDiscardPolicy must not be called before the imagery provider is ready.');
            }
            return this._tileDiscardPolicy;
        }
    },
 
    rectangle: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('rectangle must not be called before the imagery provider is ready.');
            }
            return this._rectangle;
        }
    },
 
    errorEvent: {
        get: function () {
            return this._errorEvent;
        }
    },
    ready: {
        get: function () {
            return this._resource;
        }
    },
    readyPromise: {
        get: function () {
            return this._readyPromise;
        }
    },
    credit: {
        get: function () {
            if (!this.ready) {
                throw new Cesium.DeveloperError('credit must not be called before the imagery provider is ready.');
            }
            return this._credit;
        }
    },
});
 
BaiduImageryProvider.prototype.requestImage = function (x, y, level, request) {
    let xTileCount = this._tilingScheme.getNumberOfXTilesAtLevel(level);
    let yTileCount = this._tilingScheme.getNumberOfYTilesAtLevel(level);
    let url = this.url
        .replace("{x}", x - xTileCount / 2)
        .replace("{y}", yTileCount / 2 - y - 1)
        .replace("{z}", level)
        .replace("{s}", Math.floor(10 * Math.random()));
    console.log("zxy:" + level + ", " + x + ", " + y + "; " + url);
    return Cesium.ImageryProvider.loadImage(this, url);
};

let baiduImageryProvider = new BaiduImageryProvider({
    url: "http://online{s}.map.bdimg.com/onlinelabel/?qt=tile&x={x}&y={y}&z={z}&styles=pl&scaler=1&p=1"
});
 
let viewer = new Cesium.Viewer('cesiumContainer', {
    imageryProvider: baiduImageryProvider,
    ...
}