Transform3D should have an affine3d= helper.

[jleibs]

A 3x4 affine matrix is a common representation. Would be nice to be able to pass this directly to rr.Transform3D instead of needing to:

rr.Transform3D(translation=transform[:,3], mat3x3=transform[:,0:3])

[Wumpf]

• Related to..
  • Allow 4x4 and Mat3x4 for transformations #3559
  • Add RotationMatrix similar to Quaternion and RotationAxisAngle #2868

[emilk]

If we call the parameter affine3d I think it should accept both a 3x4 and a 4x4 matrix, and in the latter case just ignore the last row

(or is it 4x3? or is it ignore the last column?)

[Wumpf]

I believe we're now in a good spot to just support 3x4 and 4x4 directly as new union variants. I'd prefer we solve it like that for all languages instead of doing a python specific thing (beyond special named parameters)

[Wumpf]

closing this as won't do / duplicate:
we do have to add a matrix 4x4 and matrix 3x4, but the way we're modelling data right now (and potentially in the future) a affine3d= helper doesn't make sense because it implies introducing an Affine3D

For additional matrices see:

• Allow 4x4 and Mat3x4 for transformations #3559