init(_:) Creates a new matrix from the specified quaternion. Declarationinit(_ quaternion: simd_quatf) See AlsoInitializersinit()init(_:)init(diagonal:)init(_:)init(_:)init(_:)init(_:_:_:_:)init(columns:)init(rows:)init(_:)init(_:)init(_:)init(affineTransform:)init(pose:)init(projectiveTransform:)