---
title: "init(equirectangular:options:)"
framework: realitykit
role: symbol
role_heading: Initializer
path: "realitykit/environmentresource/init(equirectangular:options:)-5bxl3"
---

# init(equirectangular:options:)

Synchronously creates an environment resource from an equirectangular image.

## Declaration

```swift
@MainActor convenience init(equirectangular cgImage: CGImage, options: EnvironmentResource.CreateOptions) throws
```

## Parameters

- `cgImage`: The source equirectangular (latitude, longitude) image. To preserve all details use an image where the width is half the height.

## Discussion

Discussion Loading an EnvironmentResource with this method blocks the main actor because it’s synchronous, so only call it from a command-line application. The method can stall a regular app, which makes it visibly hitch, and the system terminates an app if its UI becomes unresponsive.

## See Also

### Creating an environment resource

- [init(named:in:skyboxMode:)](realitykit/environmentresource/init(named:in:skyboxmode:).md)
- [EnvironmentResource.SkyboxMode](realitykit/environmentresource/skyboxmode.md)
- [init(equirectangular:options:)](realitykit/environmentresource/init(equirectangular:options:)-8e7wv.md)
- [init(skybox:specular:diffuse:)](realitykit/environmentresource/init(skybox:specular:diffuse:).md)