# OpenVR GetFocalPoint show big data

**URL:** https://discourse.vtk.org/t/openvr-getfocalpoint-show-big-data/7593
**Category:** VR/AR
**Created:** [January 7, 2022, 9:06am UTC](https://discourse.vtk.org/t/openvr-getfocalpoint-show-big-data/7593 "2022-01-07T09:06:16Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![zist8888](https://discourse.vtk.org/user_avatar/discourse.vtk.org/zist8888/32/3833_2.png) [@zist8888](https://discourse.vtk.org/u/zist8888)
#### Post date: [January 7, 2022, 9:06am UTC](https://discourse.vtk.org/t/openvr-getfocalpoint-show-big-data/7593/1 "2022-01-07T09:06:16Z")

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I have some problem,log as this.

function ResetCamera() ResetCameraClippingRange() before

vtkOpenVRRenderer GetActiveCamera()-\>GetFocalPoint() have value: 0.708148 , -0.260015 , -0.989036

function ResetCamera() ResetCameraClippingRange() after

vtkOpenVRRenderer GetActiveCamera()-\>GetFocalPoint() have value: 182.964 , 137.676 , 161.75

go to DoOneEvent event lop

DoOneEvent before  
vtkOpenVRRenderer GetActiveCamera()-\>GetFocalPoint() have value: 182.964 , 137.676 , 161.75

DoOneEvent after: vtkOpenVRRenderer GetActiveCamera()-\>GetFocalPoint() have value: DoOneEvent 53526.3 , 10920.6 , -47488

why I get so big value?somebody know problem.

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<div class="post-metadata">

### Author: ![zist8888](https://discourse.vtk.org/user_avatar/discourse.vtk.org/zist8888/32/3833_2.png) [@zist8888](https://discourse.vtk.org/u/zist8888)
#### Post date: [January 7, 2022, 9:48am UTC](https://discourse.vtk.org/t/openvr-getfocalpoint-show-big-data/7593/2 "2022-01-07T09:48:49Z")

</div>

VTK9.0 run DoOneEvent show right value

vtkOpenVRRenderer GetActiveCamera()-\>GetFocalPoint() have value:

278.528 , -739.577 , 871.414  
282.941 , -736.459 , 874.874  
285.143 , -736.073 , 875.343  
287.015 , -736.217 , 875.245