<matrix3>.row1 : Point3
<matrix3>.row2 : Point3
<matrix3>.row3 : Point3
<matrix3>.row4 : Point3
<matrix3>.translation : Point3
read/write access to rows. Row4 is the translation.
<matrix3>.rotationpart : Quat, read-only
<matrix3>.translationpart : Point3, read-only
<matrix3>.scalerotationpart : Quat, read-only
<matrix3>.scalepart : Point3, read-only
access to various transforms, with the remaining transforms zero-ed out.
<matrix3>.determinantsign : Integer, read-only