init() Creates a new matrix with uninitialized memory. Declarationinit() See AlsoInitializersinit(_:)init(diagonal:)init(_:)init(_:)init(_:)init(_:)init(_:_:_:_:)init(columns:)init(rows:)init(_:)init(_:)init(_:)init(affineTransform:)init(pose:)init(projectiveTransform:)