---
title: "GLKMatrix3MultiplyVector3Array(_:_:_:)"
framework: GLKit
role: symbol
role_heading: Function
platforms: [iOS 5.0+, iPadOS 5.0+, macOS 10.8+, tvOS 9.0+]
path: "glkit/glkmatrix3multiplyvector3array(_:_:_:)"
---

# GLKMatrix3MultiplyVector3Array(_:_:_:)

Multiplies a 3x3 matrix by an array of vectors.

## Declaration

```swift
func GLKMatrix3MultiplyVector3Array(_ matrix: GLKMatrix3, _ vectors: UnsafeMutablePointer<GLKVector3>, _ vectorCount: Int)
```

## Parameters

- `matrix`: The matrix multiplicand.
- `vectors`: On entry, an array of input vectors. On return, an array of output vectors.
- `vectorCount`: The number of vectors in the array.

## See Also

### Performing Mathematical Operations on Vectors

- [GLKMatrix3MultiplyVector3(_:_:)](glkit/glkmatrix3multiplyvector3(_:_:).md)