1.添加wm接口服务,2.添加贝塞尔曲线函数

src/core/Loader.js

   distance,
   heading,
   isBetween,
-  parabola
+  parabola,
+  curve
 } from './math'
 
 const { Cesium } = DC.Namespace
 Cesium.Math.heading = heading
 Cesium.Math.isBetween = isBetween
 Cesium.Math.parabola = parabola
+Cesium.Math.curve = curve
 
 const core = {
   ImageryLayerFactory,

src/core/imagery/ImageryLayerFactory.js

     return new Cesium.SingleTileImageryProvider(options)
   }
 
+  /**
+   * Create WMS image layer
+   * @param options
+   * @returns {module:cesium.WebMapServiceImageryProvider}
+   */
+  static createWMSImageryLayer(options) {
+    return new Cesium.WebMapServiceImageryProvider(options)
+  }
+
   /**
    * Create WMTS image layer
    * @param options
       case ImageryType.SINGLE_TILE:
         imageryLayer = this.createSingleTileImageryLayer(options)
         break
+      case ImageryType.WMS:
+        imageryLayer = this.createWMSImageryLayer(options)
+        break
       case ImageryType.WMTS:
         imageryLayer = this.createWMTSImageryLayer(options)
         break

src/core/imagery/ImageryType.js

 let ImageryType = {
   ARCGIS: 'arcgis',
   SINGLE_TILE: 'single_tile',
+  WMS: 'wms',
   WMTS: 'wmts',
   XYZ: 'xyz',
   COORD: 'Coord'