---
title: "subscript(_:)"
framework: arkit
role: symbol
role_heading: Instance Subscript
path: "arkit/argeometryelement/subscript(_:)"
---

# subscript(_:)

Provides an array of vertex indices that respresents the geometric primitive at the subscripted index.

## Declaration

```swift
@nonobjc subscript(index: Int) -> [Int32] { get }
```

## Discussion

Discussion This subscript operates on geometry elements of type Int32 with 4 bytesPerIndex. In the case of the faces property, this operator returns an array of size 3. The contents of the array are vertex indices that compose a triangle primitive, which represents the face identified by the argument face index.

## See Also

### Accessing Index Data

- [buffer](arkit/argeometryelement/buffer.md)