Primitive加载 PolylineVolumeGeomet

 var volume = new Cesium.PolylineVolumeGeometry({
            polylinePositions: Cesium.Cartesian3.fromDegreesArrayHeights([
                118.6052664564008, 31.896095367250844, 54.51094649588214
                ,118.60527265967644, 31.89600663109118, 55.521295395922415
                ,118.60602026340274, 31.896005195264078, 55.554240591949494
                , 118.60604459487979, 31.896004133976497, 17.986539347126186
                , 118.60633127622567, 31.896005795822646, 16.970510470055817
                , 118.60633962942539, 31.89589418952046, 12.469632977799977
                , 118.60644077343599, 31.89589221508266, 12.169390873433514
            ]),
            shapePositions : computeCircleR(1, 10),
        });
        // 定义 Geometry
        var geometry = Cesium.PolylineVolumeGeometry.createGeometry(volume);
        // 定义 GeometryInstance
        var instance = new Cesium.GeometryInstance({
            geometry: geometry,
            id: Math.random().toString(),
            attributes: {
                color: Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.AQUA)
            }
        });
        // Primitive加载
        var primitive = new Cesium.Primitive({
            geometryInstances: instance, // 多个instance组成的集合
            appearance: new Cesium.PerInstanceColorAppearance()
        });
        // viewer.scene.primitives.add(primitive);
        scene.primitives.add(primitive);      // Add regular primitive

   /**
     * polylineVolume 半径和边数
     **/
    function computeCircleR(radius, itemp) {
        let result = [];
        for (let i = 0; i < 360; i += itemp) {
            let radians = Cesium.Math.toRadians(i);
            result.push(new Cesium.Cartesian2(radius * Math.sin(radians),radius * Math.cos(radians) ));
        }
        console.log(result)
        return result;
    }