cesium situation marking meeting (distance measurement----cannot be modified)

cesium situation marking meeting (distance measurement----cannot be modified)

vue + cesium distance measurement and plotting, using es6 modular writing method, the logic is clear, and there will be obvious label instructions, making the code easy to read, understand and learn.

1. Create a new MeasureLine.js file (to store the drawing and plotting code)

class MeasureLine {
   
    
    
    constructor(arg) {
   
    
    
        //设置唯一id 备用
        this.o