1. 初始化测量工具

var result = document.getElementById('result');
var measure = new Motor.MeasureEditor({
    viewer: viewer,//Motor.Viewer实例化对象
    mode: Motor.MeasureMode.POINTDISTANCE,//测量角度或者长度，默认为角度
    callback: measureCallback
});

function measureCallback(obj){
    result.innerHTML='';
    for (let key in obj) {
        if(key==="angle"){
            result.innerHTML+=`<span style="padding-left:15px;">角度: ${obj[key].toFixed(2)} °</span>`;
        }
        else if(key==="distance"){
            result.innerHTML+=`<span style="padding-left:15px;">长度: ${obj[key].toFixed(2)} 米</span>`;
        }
        else if(key==="x"){
            result.innerHTML+=`<span style="padding-left:15px;color:red;">x: ${obj[key].toFixed(2)} 米</span>`;
        }
        else if(key==="y"){
            result.innerHTML+=`<span style="padding-left:15px;color:#2e2;">y: ${obj[key].toFixed(2)} 米</span>`;
        }
        else if(key==="z"){
            result.innerHTML+=`<span style="padding-left:15px;color:blue;">z: ${obj[key].toFixed(2)} 米</span>`;
        }
    }
}

2. 测量模式切换

//测量角度
measure.mode = Motor.MeasureMode.ANGLE;
//测量两点之间长度
measure.mode = Motor.MeasureMode.POINTDISTANCE;
//测量多点之间长度
measure.mode = Motor.MeasureMode.POINTSDISTANCE;