How to Open Step File in VTK

Support
1

Who can tell me how to open the STEP file and display it? Thank you!

2

You may read the STEP file with OpenCascade kernel and then visualize it in a VTK scene after faceting (generating visualization mesh from a CAD model). Here is the project where this workflow is readily available: https://gitlab.com/ssv/AnalysisSitus

3

thank you Quaoar!

4

There is now a vtkOCCTReader in VTK able to read step files.

5

I can’t find any document about vtkOCCTReader in python,
from vtkmodules.vtkIOLegacy import vtkOCCTReader
comes with

from vtkmodules.vtkIOLegacy import vtkOCCTReader
ImportError: cannot import name 'vtkOCCTReader' from 'vtkmodules.vtkIOLegacy'

Is there any python example?

6

Which version of VTK are you using ?
How did you install it ?

7

vtk = “^9.4.1”
I installed it with poetry, and I can run the example 01_vtk\solution_flow.py successfully.
I just want to change some code to test STEP loading.

8

Then it means OCCT is not enabled in the python wheels. You need to build open cascade and VTK yourself to access it.

9

Thanks for reply. How can I check whether vtkXXXReader is support in python? Maybe it is in another package, not from vtkmodules.vtkIOLegacy. Is there any document for python wheel?

10

The configuration is here: https://gitlab.kitware.com/vtk/vtk/-/blob/master/.gitlab/ci/configure_wheel.cmake?ref_type=heads

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