measureTool.js

// serializes Area-Measurement objects to JSON
    this.getJson = function() {
        // remove all indicator objects to avoid circular reference
        const list = _measurementsManager.measurementsList;
        Object.keys(list).map(i=>{ delete(list[i].indicator) });
        var tmp = JSON.stringify(list);
        Object.keys(list).map(i=>{ list[i].attachIndicator(_viewer, this, avem.MeasureToolIndicator) })
        return tmp;
    }
    

// de-serializes JSON into Area-Measurement objects
    this.loadJson = function(json) {
        for (var key in json) 
            this.addMeasurement(json[key])
    }
    
    
    
    this.addPick = function(inp) {
        var json = JSON.parse(JSON.stringify(inp));
        var p = _currentMeasurement.setPick(json.id, new Autodesk.Viewing.Extensions.Measure.SnapResult())
        Object.assign(p, {
            geomType:json.geomType,
            fromTopology:false,
            viewportIndex2d:json.viewportIndex2d,
            geomVertex: new THREE.Vector3(json.geomVertex.x,json.geomVertex.y,json.geomVertex.z),
            intersectPoint: new THREE.Vector3(json.intersectPoint.x,json.intersectPoint.y,json.intersectPoint.z),
            radius:json.radius
        });
    }

    this.addMeasurement = function(json) {
        _currentMeasurement = _measurementsManager.createMeasurement(json.measurementType);
        _currentMeasurement.MarkupID = json.id;
        for (var key in json.picks) {
            if (!json.picks[key])
                delete(json.picks[key])
            else
                this.addPick(json.picks[key])
        }
        _currentMeasurement.closedArea = true;
        _activePoint = Object.keys(json.picks).length+1;
        //clean up non object arrays
        _currentMeasurement.attachIndicator(_viewer, this, avem.MeasureToolIndicator);
        this.onMeasurementChanged();
    }