<!--
{
  "availability" : [
    "iOS: 8.0.0 - 26.0.0",
    "iPadOS: 8.0.0 - 26.0.0",
    "macCatalyst: 13.1.0 - 26.0.0",
    "macOS: 10.8.0 - 26.0.0",
    "tvOS: 9.0.0 - 26.0.0",
    "visionOS: 1.0.0 - 26.0.0",
    "watchOS: 3.0.0 - 26.0.0"
  ],
  "documentType" : "symbol",
  "framework" : "SceneKit",
  "identifier" : "/documentation/SceneKit/SCNCameraProjectionDirection/horizontal",
  "metadataVersion" : "0.1.0",
  "role" : "Case",
  "symbol" : {
    "kind" : "Case",
    "modules" : [
      "SceneKit"
    ],
    "preciseIdentifier" : "c:@E@SCNCameraProjectionDirection@SCNCameraProjectionDirectionHorizontal"
  },
  "title" : "SCNCameraProjectionDirection.horizontal"
}
-->

# SCNCameraProjectionDirection.horizontal

The camera’s field of view or orthographic scale are measured horizontally.

```
case horizontal
```

## Discussion

If a camera’s [`projectionDirection`](/documentation/SceneKit/SCNCamera/projectionDirection) property has this value:

- The [`fieldOfView`](/documentation/SceneKit/SCNCamera/fieldOfView) property measures the horizontal viewing angle, and SceneKit automatically calculates the vertical angle according to the aspect ratio of the view presenting the scene.
- Or, if the camera uses an orthographic projection, the [`orthographicScale`](/documentation/SceneKit/SCNCamera/orthographicScale) property measures the horizontal scale factor, and SceneKit automatically calculates the vertical factor according to  aspect ratio.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)