# Render window stuck after setting interpolation type to linear

**URL:** https://discourse.vtk.org/t/render-window-stuck-after-setting-interpolation-type-to-linear/5702
**Category:** Support
**Created:** [May 4, 2021, 1:32pm UTC](https://discourse.vtk.org/t/render-window-stuck-after-setting-interpolation-type-to-linear/5702 "2021-05-04T13:32:57Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![xxyyy159](https://discourse.vtk.org/user_avatar/discourse.vtk.org/xxyyy159/32/4528_2.png) [@xxyyy159](https://discourse.vtk.org/u/xxyyy159)
#### Post date: [May 4, 2021, 1:32pm UTC](https://discourse.vtk.org/t/render-window-stuck-after-setting-interpolation-type-to-linear/5702/1 "2021-05-04T13:32:57Z")

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Hi all,  
I’m using vtkCameraInterpolator for some program and I find an example here(link below).  
[https://kitware.github.io/vtk-examples/site/Cxx/Rendering/InterpolateCamera/](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/InterpolateCamera/)  
After setting the interpolation type to linear, the render window stuck. What should I do if I need to set the interpolation type to linear but not spline?