API
API|
@babylonjs/serializers|
ST_Matrix3D

Type Alias ST_Matrix3D

ST_Matrix3D: [
    number,
    number,
    number,
    number,
    number,
    number,
    number,
    number,
    number,
    number,
    number,
    number,
]

In the XSD, ST_Matrix3D is a whitespace separated list of numbers. The official 3MF core spec uses a 3x4 matrix (12 numbers).