---
title: controlPointCount
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4accelerationstructuremotioncurvegeometrydescriptor/controlpointcount
---

# controlPointCount

Specifies the number of control points in the buffers the control point buffers reference.

## Declaration

```swift
var controlPointCount: Int { get set }
```

## Discussion

Discussion All keyframes have the same number of control points.