Function initCesium

frontend/app.js:536–578

()

    },

    initCesium() {
      if (!window.Cesium) {
        this.cesiumReady = false;
        return;
      }

      try {
        const imageryProvider = new Cesium.TileMapServiceImageryProvider({
          url: Cesium.buildModuleUrl('Assets/Textures/NaturalEarthII'),
        });

        this.viewer = new Cesium.Viewer('cesiumContainer', {
          imageryProvider,
          animation: false,
          timeline: false,
          baseLayerPicker: false,
          geocoder: false,
          homeButton: false,
          sceneModePicker: false,
          navigationHelpButton: false,
          fullscreenButton: false,
          infoBox: false,
          selectionIndicator: false,
          requestRenderMode: true,
        });

        this.viewer.scene.globe.enableLighting = false;
        this.viewer.scene.backgroundColor = Cesium.Color.fromCssColorString('#1f2b2d');
        this.viewer.camera.setView({
          destination: Cesium.Cartesian3.fromDegrees(110, 28, 22000000),
        });

        this.cesiumReady = true;

        // 若上次选择了 2D 模式，初始化后立即切换
        if (this.mapMode === '2D') {
          this.viewer.scene.morphTo2D(0);
        }
      } catch (error) {
        console.warn('Cesium 初始化失败:', error);
        this.cesiumReady = false;
      }
    },

    /**
     * 在 2D 平面地图与 3D 地球模式之间切换。