CesiumJS with 3D-Wind

3D-Wind-Field : GitHub - RaymanNg/3D-Wind-Field: Visualize wind field on Cesium

Hello, I’m using CesiumJS to implement 3D wind flow.

When the wind flow is raised at an altitude of 100 meters and the camera is below 100 meters (The wind is above the camera), the particles disappear.

I wonder if it’s a problem with the library or Cesium JS. If it’s a library problem, I wonder if I can modify the GLSL code. Thank you.