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# ARGeometryPrimitiveType

The kind of connection between vertices.

```
enum ARGeometryPrimitiveType
```

## Overview

When you enable [`sceneReconstruction`](/documentation/ARKit/ARWorldTrackingConfiguration/sceneReconstruction) on a world-tracking configuration, ARKit provies a wireframe mesh that models the shape of the real world using a collection of connected vertices. ARKit uses [`ARGeometryPrimitiveType`](/documentation/ARKit/ARGeometryPrimitiveType) to indicate how a particular property of that mesh is interpreted. For example, a mesh geometry’s [`faces`](/documentation/ARKit/ARMeshGeometry/faces) property specifies that each face within the geometry is of type [`ARGeometryPrimitiveType.triangle`](/documentation/ARKit/ARGeometryPrimitiveType/triangle).

## Topics

### Type of Connection

[`case line`](/documentation/ARKit/ARGeometryPrimitiveType/line)

A line segment in which a line connects two vertices.

[`case triangle`](/documentation/ARKit/ARGeometryPrimitiveType/triangle)

Three vertices that connect to form a triangle.

### Initializers

[`init?(rawValue: Int)`](/documentation/ARKit/ARGeometryPrimitiveType/init(rawValue:))

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Hashable`](/documentation/Swift/Hashable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Sendable`](/documentation/Swift/Sendable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

---

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