函数 capture

capture(
    map: Map,
    width_?: number,
    height_?: number,
    fileName?: string,
    scale?: number,
): Promise<string>
捕获OpenLayers地图截图
参数
- map: Map
  OpenLayers地图实例
- width_: number = 128
- height_: number = 128
- fileName: string = 'map'
- scale: number = 1
返回 Promise<string>
Promise 返回Base64格式的图片数据
- 定义于 earthsdk/earthsdk3-ol/src/utlis/base/capture.ts:11