Help Marquee tool

[Richard]

To choose particles using coordinates, you first need to decide which coordinate space to use. Marquee tools generally work in screen or UI space. So simply project particle positions using Camera.WorldToScreenPoint.

You cannot "lead to edit" by script. The particle editor is an editor tool, you cannot use it in a game. As I already told you in a previous thread, you need to determine whether you're making an editor tool to extend Unity, or a in-game tool.

Also, there's no concept of "selection" in Unity, except when running in editor. Again, these issues have nothing to do with Obi at all.

Would you tell me how to project particle positions using Camera.WorldToScreenPoint? It is not related to Obi? In the documentation, I have to assign particle to target.