Create a `Matrix4`

instance for `'Affine'`

transform

## Arguments

- m
a matrix or a vector to be converted to the

`Matrix4`

instance;`m`

must be one of the followings: for matrices, the dimension must be`4x4`

,`3x4`

(the last row will be`0 0 0 1`

), or`3x3`

(linear transform); for vectors, the length must be`16`

,`12`

(will append`0 0 0 1`

internally),`3`

(translation), or`1`

(scale).