cesiumforunity有什么好的办法能够在地图上绘制线条将地图划分区域吗？
Hi @dwbcxy886,
Sorry, could you provide an example of what you mean? Or an image, even? Maybe there is a translation error, but I am not sure what dividing into regions means for your use case. 
cesiumforunity 我想将这个spline构建出的边框部分在地图上显示贴图，外围白色部分和内部部分显示透明，但是cesium材质没有对应的学习资料不太会弄。
做这个的目的是能够在cesium 3d tileset地图上出现一个方形贴图框选这部分地图区域
I’m glad you hear you were able to figure it out, @dwbcxy886. Would you mind sharing your solution, so that others here might benefit from it?
一个3dtile用作裁剪，另一个3dtile把这个缺口补上并且更改材质为自发光就 ok