NIF对象 | 复合类型 | 枚举类型 | 基本类型 | 文件版本
| Number | 名称 | 说明 |
|---|---|---|
| 0 | VELOCITY_USE_NORMALS | Uses the normals of the meshes to determine staring velocity. |
| 1 | VELOCITY_USE_RANDOM | Starts particles with a random velocity. |
| 2 | VELOCITY_USE_DIRECTION | Uses the emission axis to determine initial particle direction? |