Entities属性polyline绘制图形如何固定宽度

CesiumJS
1

如何在三维视图指定位置将宽度固定，鼠标缩放是禁止宽度变化

 viewer.entities.add({
            crossguid: crossguid,
            polyline: {     
              positions: Cesium.Cartesian3.fromDegreesArrayHeights(nodePositionArr),
              width: 85,
              material: new Cesium.ImageMaterialProperty({
                image: require("../../image/corssImage/公路.jpg"),
                repeat: new Cesium.Cartesian2(length, 1)
              }),
              show: true,
              clampToGround: true,
              distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 3000),
            },
          });

image
在缩放后图形就变大挤到了一起
image