cesium label文字标注

entity.label={         
 
            text : parseFloat(airdata[curAirParaName]).toFixed(2),
            color : Cesium.Color.fromCssColorString('#fff'),
            font:'normal 32px MicroSoft YaHei',
            showBackground : true,
            scale : 0.4,
            /*horizontalOrigin : Cesium.HorizontalOrigin.LEFT_CLICK,*/
            /*verticalOrigin : Cesium.VerticalOrigin.BOTTOM,*/
            distanceDisplayCondition : new Cesium.DistanceDisplayCondition(0, 500),
            /*disableDepthTestDistance : 1000*/
 
            /*Represents a scalar value's lower and upper bound at a near distance and far distance in eye space.
            Name    Type    Default Description
            near    Number  0.0 optional The lower bound of the camera range.
                nearValue   Number  0.0 optional The value at the lower bound of the camera range.
            far Number  1.0 optional The upper bound of the camera range.
                farValue    Number  0.0 optional The value at the upper bound of the camera range.*/
            scaleByDistance : new Cesium.NearFarScalar(100, 2, 500, 0.0),
        }