# projectionMatrix

Source: https://www.nianticspatial.com/docs/api/swift/NSDK.NSDKCamera.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 size, with optional near/far clipping.
Pass the same orientation and viewport size used for the view matrix so that 3D content projects correctly.
zFar > 0 uses a finite far plane; zFar <= 0 yields an infinite far plane (e.g. for skyboxes).

### Parameters

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

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