---
title: "projectionTransform(withViewportSize:)"
framework: scenekit
role: symbol
role_heading: Instance Method
path: "scenekit/scncamera/projectiontransform(withviewportsize:)"
---

# projectionTransform(withViewportSize:)

## Declaration

```swift
func projectionTransform(withViewportSize viewportSize: CGSize) -> SCNMatrix4
```

```swift
func projectionTransform(withViewportSize viewportSize: CGSize) -> SCNMatrix4
```