---
title: projectionMatrix
framework: GLKit
role: symbol
role_heading: Instance Property
platforms: [iOS 5.0+, iPadOS 5.0+, macOS 10.8+, tvOS 9.0+]
path: glkit/glkeffectpropertytransform/projectionmatrix
---

# projectionMatrix

The matrix used to transform position coordinates from eye space to projection space.

## Declaration

```swift
var projectionMatrix: GLKMatrix4 { get set }
```

## Discussion

Discussion Convenience functions for creating perspective and orthographic projection matrices can be found in GLKMatrix4.