使用entities中wall属性绘制墙壁如何添加图片

CesiumJS
1

绘制一个房子使用wall绘制出来墙壁，如何给四面墙壁添加不一样的图片，目前就只添加了一张图片

 viewer.entities.add({
            crossguid: crossguid,
            wall: {   //墙
              positions: Cesium.Cartesian3.fromDegreesArrayHeights(nodePositionArr),
              shadows: Cesium.ShadowMode.ENABLED,
              material: new Cesium.ImageMaterialProperty({
                image: require("../../image/corssImage/bottom.jpg"),
                repeat: new Cesium.Cartesian2(1, 1)
              }),
              maximumHeights: maximumHeights,
              minimumHeights: minimumHeights,
              distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 5000),
              fill: true,     // 是否被提供的材质填充
              show: true,    // 是否显示
            }
          });
2

算好墙的长度，用绘图软件拼接四张图片再传进来

3

ok,明白了，您好，我想再问一下polyline 画的线条上面给添加纹理图片，如何将width 宽度固定呢，禁止他缩放变大

4 
var river=viewer.entities.add({
            crossguid: crossguid,
            polyline: {     // 平面
              positions: Cesium.Cartesian3.fromDegreesArrayHeights(nodePositionArr),
              width: 85,
              material: new Cesium.ImageMaterialProperty({
                image: require("../../image/corssImage/铁路.jpg"),
                repeat: new Cesium.Cartesian2(length, 1)
              }),
              show: true,
              clampToGround: true,
              distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 5000),
            },
          });