Rendering issue with visualisation

Thank you for the tool,

I have been having issues with the VectorQuantities, PointClouds and CurveNetworks in that they seem to have some weird rendering artifacts. It is a bit hard to describe so I have attached a recording of it. It looks to be only rendering elements that are a fixed distance from the camera.

In the video, the expected visualisation is a crossfield on each face of the ellipse as well as normal vectors along the principal axis (essentially along the x and y).

Any suggestions for how to address this would be greatly appreciated!

https://github.com/user-attachments/assets/05dd1d50-b620-4b76-8bf8-2ff8a6bd2a6d

まず、添付された録画と、期待される楕円 crossfield および主軸ベクトルを参照しながら、VectorQuantities、PointClouds、CurveNetworks でアーティファクトを再現します。これらの可視化のレンダリング動作を追跡し、固定されたカメラ距離にある要素だけが表示される理由を切り分けます。すべての期待される要素がカメラ距離にかかわらず一貫してレンダリングされれば完了です。