# leftViewMatrix The transformation matrix that determines the position and orientation of the camera’s left viewpoint relative to a scene. ``` var leftViewMatrix: matrix_float4x4 { get } ``` ## Discussion Model I/O automatically generates this matrix from the camera’s position and orientation, additionally using the [`interPupillaryDistance`](/documentation/ModelIO/MDLStereoscopicCamera/interPupillaryDistance) and [`leftVergence`](/documentation/ModelIO/MDLStereoscopicCamera/leftVergence) properties to account for the offset and angle of a stereoscopic camera’s left viewpoint. A renderer uses this matrix, along with the [`leftProjectionMatrix`](/documentation/ModelIO/MDLStereoscopicCamera/leftProjectionMatrix) property and model matrices derived from the camera’s position and orientation (the [`transform`](/documentation/ModelIO/MDLObject/transform) property) and the content to be rendered, to transform vertex data to the renderer’s 2D screen space at render time. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)