# Adding Multiple Views To vtkRenderWindow in vtk.js

**URL:** https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070
**Category:** Web
**Created:** [November 8, 2019, 2:34am UTC](https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070 "2019-11-08T02:34:26Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Donny\_Zimmerman](https://discourse.vtk.org/user_avatar/discourse.vtk.org/donny_zimmerman/32/301_2.png) [@Donny\_Zimmerman](https://discourse.vtk.org/u/Donny_Zimmerman)
#### Post date: [November 8, 2019, 2:34am UTC](https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070/1 "2019-11-08T02:34:26Z")

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Can I add multiple views (vtkOpenGLRenderWindow) to vtkRenderWindow? If so how do I get certain vtkRenderer’s to only show in any particular view, since we add renderer’s to the vtkRenderWindow and not to the views?

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### Author: ![Donny\_Zimmerman](https://discourse.vtk.org/user_avatar/discourse.vtk.org/donny_zimmerman/32/301_2.png) [@Donny\_Zimmerman](https://discourse.vtk.org/u/Donny_Zimmerman)
#### Post date: [November 8, 2019, 2:48am UTC](https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070/2 "2019-11-08T02:48:28Z")

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I think I can use SetViewport on the renderers instead of creating multiple views. I tried to set the viewport on the renderers, but I would not get anything rendered when I did that. Does anybody know if SetViewport on the renderers is functional?

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### Author: ![Donny\_Zimmerman](https://discourse.vtk.org/user_avatar/discourse.vtk.org/donny_zimmerman/32/301_2.png) [@Donny\_Zimmerman](https://discourse.vtk.org/u/Donny_Zimmerman)
#### Post date: [November 8, 2019, 2:57am UTC](https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070/3 "2019-11-08T02:57:37Z")

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I got SetViewport to work correctly. I had a bug in my program when testing SetViewport that prevented proper rendering. The interaction even works as intended.

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### Author: ![Harith\_Arash](https://discourse.vtk.org/user_avatar/discourse.vtk.org/harith_arash/32/2616_2.png) [@Harith\_Arash](https://discourse.vtk.org/u/Harith_Arash)
#### Post date: [November 14, 2020, 4:47am UTC](https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070/4 "2020-11-14T04:47:22Z")

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Hi, can you share with me your code example. I’m a beginner with these VTK.js.

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### Author: ![Donny\_Zimmerman](https://discourse.vtk.org/user_avatar/discourse.vtk.org/donny_zimmerman/32/301_2.png) [@Donny\_Zimmerman](https://discourse.vtk.org/u/Donny_Zimmerman)
#### Post date: [November 16, 2020, 2:45pm UTC](https://discourse.vtk.org/t/adding-multiple-views-to-vtkrenderwindow-in-vtk-js/2070/5 "2020-11-16T14:45:33Z")

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Can you post specific questions that you are having issues with. I cannot tell from your post what exactly you are looking for.