viewMatrix = view.transform.inverse().matrix;

NOTE: The {{XRView/transform}} can be used to position camera objects in many rendering libraries. If a more traditional view matrix is needed by the application one can be retrieved by calling `view.transform.inverse().matrix`.

XRRigidTransform inverse();

The <dfn attribute for="XRRigidTransform">matrix</dfn> attribute returns the transform described by the {{XRRigidTransform/position}} and {{XRRigidTransform/orientation}} attributes as a [=matrix=].

An {{XRRigidTransform}} with a {{XRRigidTransform/position}} of <code>{ x: 0, y: 0, z: 0 w: 1 }</code> and an {{XRRigidTransform/orientation}} of <code>{ x: 0, y: 0, z: 0, w: 1 }</code> is known as an <dfn>identity transform</dfn>.

The {{XRRigidTransform/inverse()}} method returns a {{XRRigidTransform}} which, if applied to an object that had previously been transformed by the original {{XRRigidTransform}}, would undo the transform and return the object to it's initial pose.