Get transform of mesh object

Scripting
1

Hello,

I have not found a method to get the transform matrix of an mesh.
Is this possible by any function or is there any walkaround?

thanks in advance,
Marco

2

Hello,

Objects in Rhino do not store such thing. Its a fully world/global coordinate system. TM are used for transformation purposes only. You are missing information. You basically need a plane to define the original orientation of your object.
If you define one, you can convert this plane into a tm you need to do the math for yourself. There are different calculations possible, depending on the system you are targeting -> euler, quadnerion …
Euler transformations are different, depending on which axis is rotated first.Euler TM’s can gimbal lock, so using a Quadnerion for conversion purposes is better.
One exception are Blocks.

3

Quaternion