> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/dragonfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/dragonfly-primer/components/0_create/apply_facade_parameters.md).

# Apply Facade Parameters

![](/files/-Mihr_NO_Bh7rkXjNqZR)

![](/files/-Mihr_NQiA_sgLiuZzg8) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Apply%20Facade%20Parameters.py)

Apply WindowParameters and/or ShadingParameters to any Dragonfly object (Building, Story, Room2D).

### Inputs

* **df\_obj \[Required]**

A Dragonfly Building, Story or Room2D which will have the input WindowParameters and/or ShadingParameters assigned to it.

* **win\_par**

A WindowParameter object that dictates how the window geometries will be generated for each of the walls. If None, the window parameters will remain unchanged across the input object. If an array of values are input here, different WindowParameters will be assigned based on cardinal direction, starting with north and moving clockwise.

* **shd\_par**

A ShadingParameter objects that dictate how the shade geometries will be generated for each of the walls. If None, the shading parameters will remain unchanged across the input object. If an array of values are input here, different ShadingParameters will be assigned based on cardinal direction, starting with north and moving clockwise.

* **skylight**

A SkylightParameters object describing how to generate skylights.

### Outputs

* **report**

The execution information, as output and error streams

* **df\_obj**

The input Dragonfly object with the WindowParameters and/or ShadingParameters assigned to it.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.ladybug.tools/dragonfly-primer/components/0_create/apply_facade_parameters.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.