---
title: curveType
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlaccelerationstructurecurvegeometrydescriptor/curvetype
---

# curveType

A curve type for curves in the geometry.

## Declaration

```swift
var curveType: MTLCurveType { get set }
```

## Discussion

Discussion The default value is MTLCurveType.round.