# vtkAssembly transform propagation

**URL:** https://discourse.vtk.org/t/vtkassembly-transform-propagation/10547
**Category:** Support
**Tags:** training, code
**Created:** [January 26, 2023, 1:27pm UTC](https://discourse.vtk.org/t/vtkassembly-transform-propagation/10547 "2023-01-26T13:27:49Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![TartaPise](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/t/47e85d/32.png) [@TartaPise](https://discourse.vtk.org/u/TartaPise)
#### Post date: [January 26, 2023, 1:27pm UTC](https://discourse.vtk.org/t/vtkassembly-transform-propagation/10547/1 "2023-01-26T13:27:49Z")

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Hello everyone, I noticed that using vtkAssembly-\>SetUserTransform() does not update the corresponding vtkActors transform thus their center and orientation. Do you think this makes sense? Wouldn’t it be better to propagate the transform to all the parts composing the assembly? or am I missing something?

Thanks for your time!