# How to create VTK\_TETRA using vtk.js celltypes

**URL:** https://discourse.vtk.org/t/how-to-create-vtk-tetra-using-vtk-js-celltypes/15839
**Category:** Web
**Tags:** vtkjs
**Created:** [July 18, 2025, 9:21am UTC](https://discourse.vtk.org/t/how-to-create-vtk-tetra-using-vtk-js-celltypes/15839 "2025-07-18T09:21:33Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![tengziyang](https://discourse.vtk.org/user_avatar/discourse.vtk.org/tengziyang/32/10137_2.png) [@tengziyang](https://discourse.vtk.org/u/tengziyang)
#### Post date: [July 18, 2025, 9:21am UTC](https://discourse.vtk.org/t/how-to-create-vtk-tetra-using-vtk-js-celltypes/15839/1 "2025-07-18T09:21:33Z")

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![image](https://discourse.vtk.org/uploads/default/original/2X/d/dff9e287d5c3f529dcff9a7ab57e514d76291cda.png)

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### Author: ![Forrest](https://discourse.vtk.org/user_avatar/discourse.vtk.org/forrest/32/300_2.png) [@Forrest](https://discourse.vtk.org/u/Forrest)
#### Post date: [July 18, 2025, 2:49pm UTC](https://discourse.vtk.org/t/how-to-create-vtk-tetra-using-vtk-js-celltypes/15839/2 "2025-07-18T14:49:09Z")

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AFAIK tetra celltypes are not supported in vtk.js at the moment. You’ll have to manually construct the tetrahedrons using triangles.

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### Author: ![tengziyang](https://discourse.vtk.org/user_avatar/discourse.vtk.org/tengziyang/32/10137_2.png) [@tengziyang](https://discourse.vtk.org/u/tengziyang)
#### Post date: [July 21, 2025, 1:28am UTC](https://discourse.vtk.org/t/how-to-create-vtk-tetra-using-vtk-js-celltypes/15839/3 "2025-07-21T01:28:43Z")

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Thank you I think I didn’t find the right way.