Promble about getting block's rotation and size

[robinr.yan]

Block A transform to B ,How do i get the rotation and size information of block B base on rhinocommon?
I Found Transform.TryGetInverse(),but it’s not helping in this case.
Thanks a lot.

[dale (Dale Fugier)]

Hi Robin,

Here is a similar topic you should review:

Transformation Matrix

I am trying to wrap my head around the transformation matrix in Rhino Python, and was wondering if there was something out there that listed what each item in the matrix controls. For instance scale, rotation, position. Looking through the help this is as close as I got to the structure,but don’t know what each value controls. [image] Thanks

A quick summary: The Rhino SDK does not contain functions that will decompose a transformation matrix into it’s individual components (e.g. scale, rotation, translation). If you Google the topic, you will probably find lots if information on the subject. Just keep in mind that there is no perfect solution for this. For example, certain scale operations rotation operations can cause the scale and rotation components of the transform will become mixed.

– Dale

[Sarath_Kithiyon]

@dale
Can you explain how scale, mirror, shear, rotation value are mixed in block transformation?
Replay ASAP.

-Sarath