> For the complete documentation index, see [llms.txt](https://renownedgames.gitbook.io/ai-tree/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://renownedgames.gitbook.io/ai-tree/environment-query-system/useful-objects/environment-query/trace-mode/layer.md).

# Layer

### Description

Binds [EQS](/ai-tree/environment-query-system/quick-start.md) covered area to selected layers.

Items are bound to surface in points of raycast hits. Ray start point is offset up by "Up Offset" distance and projected down at "Project Down" distance.

This trace mode and it's parameters are shown in the  picture below.

<figure><img src="https://2203000093-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGOxTM7Aj9oiVaIINrEkE%2Fuploads%2F4WNCGCPBZ1l3nLb8Ilji%2FEQ%20trace%20layer.png?alt=media&amp;token=53cc88de-13e9-44b1-8e6b-f88cffbfd738" alt=""><figcaption></figcaption></figure>

#### Parameters

| Name          | Description                                                                                                                   |
| ------------- | ----------------------------------------------------------------------------------------------------------------------------- |
| Raycast All   | If enabled items are created every time raycast makes a hit inside of allowed distance. If not enabled only first hit counts. |
| Up Offset     | Vertical offset from where projectiles are launched downwards                                                                 |
| Project down  | Distance at which projectiles are launched                                                                                    |
| Culling Layer | Layermask of "visible" to [EQS](/ai-tree/environment-query-system/quick-start.md) layers                                      |