Cesium加载Vectors和geometry

 如果高程为0。。。会贴在球面上

https://sandcastle.cesium.com/?src=Geometry%20and%20Appearances.html

        positions = [];
        for (i = 0; i < 40; ++i) {
          positions.push(Cesium.Cartesian3.fromDegrees(-100.0 + i, 15.0));
        }

        entities.add({
            polyline: {
                positions: positions,
                width: 10.0,
                material: new Cesium.PolylineGlowMaterialProperty({
                color: Cesium.Color.DEEPSKYBLUE,
                glowPower: 0.25,
                }),
            },
        });

如果在positions.push的参数加上Z值，则会