# projectionMatrix

Source: https://www.nianticspatial.com/docs/api/swift/NSDK.PlaybackCamera.method-projectionMatrix/

projectionMatrix

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## Declaration

func projectionMatrix(for orientation: UIInterfaceOrientation, viewportSize: CGSize, zNear: CGFloat, zFar: CGFloat) -> simd_float4x4

#### Summary

Returns a projection matrix for the given orientation and viewport, with the requested near/far planes.
Built from intrinsics with orientation applied: portrait swaps fx/fy and dimensions; landscape-left flips principal point.

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| orientation | UIInterfaceOrientation | - |
| viewportSize | CGSize | - |
| zNear | CGFloat | - |
| zFar | CGFloat | - |

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