# VR/AR

**URL:** https://discourse.vtk.org/c/vr-ar/10.md?page=1

[Latest](https://discourse.vtk.org/latest.md) · [Categories](https://discourse.vtk.org/categories.md) · [Tags](https://discourse.vtk.org/tags.md)

**Page:** 2

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## [OpenXR support in VTK](https://discourse.vtk.org/t/openxr-support-in-vtk/5516)

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**Author:** [@Lfx\_Paul](https://discourse.vtk.org/u/Lfx_Paul)\
**Replies:** 14\
**Last updated:** [January 18, 2022, 9:46am UTC](https://discourse.vtk.org/t/openxr-support-in-vtk/5516 "2022-01-18T09:46:23Z")

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Hi all, The development of an OpenXR module has started and the goal is, at first, to imitate the OpenVR module, and then factorize the VR code between OpenVR and OpenXR in a GenericVR module. Notice that we could also …

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## [vr::VRInput() returning nullptr in VTK 9.1](https://discourse.vtk.org/t/vr-vrinput-returning-nullptr-in-vtk-9-1/7566)

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**Author:** [@codeling](https://discourse.vtk.org/u/codeling)\
**Replies:** 11\
**Last updated:** [January 10, 2022, 3:59pm UTC](https://discourse.vtk.org/t/vr-vrinput-returning-nullptr-in-vtk-9-1/7566 "2022-01-10T15:59:24Z")

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We use vtk’s OpenVR integration, and recently I noticed that when using VTK 9.1.0, the vr::VRInput() call in vtkOpenVRRenderWindowInteractor::Initialize() in line 784 returns a nullptr leading to a crash. This does not …

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## [OpenVR GetFocalPoint show big data](https://discourse.vtk.org/t/openvr-getfocalpoint-show-big-data/7593)

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**Author:** [@zist8888](https://discourse.vtk.org/u/zist8888)\
**Replies:** 1\
**Last updated:** [January 7, 2022, 9:48am UTC](https://discourse.vtk.org/t/openvr-getfocalpoint-show-big-data/7593 "2022-01-07T09:48:49Z")

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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() ResetC…

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## [Tutorial\_Step1.cxx went wrong--help(vtk9)](https://discourse.vtk.org/t/tutorial-step1-cxx-went-wrong-help-vtk9/7455)

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**Author:** [@juno](https://discourse.vtk.org/u/juno)\
**Replies:** 1\
**Last updated:** [December 27, 2021, 9:17am UTC](https://discourse.vtk.org/t/tutorial-step1-cxx-went-wrong-help-vtk9/7455 "2021-12-27T09:17:51Z")

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Tutorial\_Step1.cxx went wrong when it was run in VS2019. No windows appeared and the programme exited directely!Why?

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## [How to get the cell ids of mesh intersected with line using vtk ?](https://discourse.vtk.org/t/how-to-get-the-cell-ids-of-mesh-intersected-with-line-using-vtk/6798)

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**Author:** [@Muhammad\_Ahmed](https://discourse.vtk.org/u/Muhammad_Ahmed)\
**Replies:** 1\
**Last updated:** [October 13, 2021, 4:04am UTC](https://discourse.vtk.org/t/how-to-get-the-cell-ids-of-mesh-intersected-with-line-using-vtk/6798 "2021-10-13T04:04:52Z")

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I have a code for mesh generated myself and I have a defined line too. I want to use vtk to extract all the cells which are intersected with line. How do I access my data in vtk and what functions should I use to find in…

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## [Why changing example to port it to VR doesn't work?](https://discourse.vtk.org/t/why-changing-example-to-port-it-to-vr-doesnt-work/5937)

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**Author:** [@myousefi2016](https://discourse.vtk.org/u/myousefi2016)\
**Replies:** 10\
**Last updated:** [June 21, 2021, 1:54pm UTC](https://discourse.vtk.org/t/why-changing-example-to-port-it-to-vr-doesnt-work/5937 "2021-06-21T13:54:10Z")

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I cloned the latest VTK 9.0 version from your Github repo and build it with OpenVR and SDL2 enabled. I’m using Windows 10 and Microsoft Visual Studio 2019. I’m able to build RayCastIsosurface example without any problem …

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## [OpenXR - VTK](https://discourse.vtk.org/t/openxr-vtk/1709)

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**Author:** [@hummlj](https://discourse.vtk.org/u/hummlj)\
**Replies:** 4\
**Last updated:** [April 7, 2021, 4:23pm UTC](https://discourse.vtk.org/t/openxr-vtk/1709 "2021-04-07T16:23:30Z")

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Hi, I’m working on a research project of real-time/near real-time flow visualization of large flow field measurements. I’ve found Kitware members are engaged with the development of Khronos OpenXR standard. Does anyone…

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## [Create Canvas Object For 2D Actors](https://discourse.vtk.org/t/create-canvas-object-for-2d-actors/5449)

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**Author:** [@bigvalthoss](https://discourse.vtk.org/u/bigvalthoss)\
**Replies:** 0\
**Last updated:** [March 26, 2021, 5:31pm UTC](https://discourse.vtk.org/t/create-canvas-object-for-2d-actors/5449 "2021-03-26T17:31:43Z")

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Hello! I’m new here and was wondering if there is such a thing as a canvas object for vtk so that you can add text/annotations into VR. Note: I’m working in 3Slicer

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## [IOS Scencekit support vtp?](https://discourse.vtk.org/t/ios-scencekit-support-vtp/5131)

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**Author:** [@menhuan](https://discourse.vtk.org/u/menhuan)\
**Replies:** 0\
**Last updated:** [February 3, 2021, 9:49am UTC](https://discourse.vtk.org/t/ios-scencekit-support-vtp/5131 "2021-02-03T09:49:19Z")

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how do we load vtp by using scenekit.?

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## [how to show whole object and part of the object in the same time?](https://discourse.vtk.org/t/how-to-show-whole-object-and-part-of-the-object-in-the-same-time/4107)

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**Author:** [@YolkandWhite](https://discourse.vtk.org/u/YolkandWhite)\
**Replies:** 1\
**Last updated:** [August 31, 2020, 8:31pm UTC](https://discourse.vtk.org/t/how-to-show-whole-object-and-part-of-the-object-in-the-same-time/4107 "2020-08-31T20:31:14Z")

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Hi I’m new to VTK. I am trying to do 3d volume rendering with 2d stacked images. and what I’m also trying to find out how to visualize the part of it. for example, If I have ave with an stacked apple picture, I want t…

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## [Creating a VR HUD](https://discourse.vtk.org/t/creating-a-vr-hud/3606)

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**Author:** [@AlexG](https://discourse.vtk.org/u/AlexG)\
**Replies:** 0\
**Last updated:** [June 22, 2020, 6:39am UTC](https://discourse.vtk.org/t/creating-a-vr-hud/3606 "2020-06-22T06:39:46Z")

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Hi, I am creating a heatmap and want to display the values of the vtkLookupTable as a color bar. Therefore i use the vtkScalarBarActor. The problem is that i do not know how to position it properly so that it does not h…

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## [Creating VR user interface](https://discourse.vtk.org/t/creating-vr-user-interface/3102)

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**Author:** [@1118](https://discourse.vtk.org/u/1118)\
**Replies:** 1\
**Last updated:** [April 20, 2020, 6:31am UTC](https://discourse.vtk.org/t/creating-vr-user-interface/3102 "2020-04-20T06:31:31Z")

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Hi. I have been playing around ParaView Open VR plugin with VIVE VR equipment. I like how ParaView QT GUI is rendered inside the VR render window. But for the project we are working on, we need to make our own simple U…

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## [Python rendering scene to VR](https://discourse.vtk.org/t/python-rendering-scene-to-vr/340)

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**Author:** [@banesullivan](https://discourse.vtk.org/u/banesullivan)\
**Replies:** 12\
**Last updated:** [April 20, 2020, 1:21am UTC](https://discourse.vtk.org/t/python-rendering-scene-to-vr/340 "2020-04-20T01:21:25Z")

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Is it possible to implement a way to send a rendering scene (made in Python) to VR kind of like ParaView’s “Send to OpenVR” button? If so, I’m definitely going to try to implement this for vtki

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## [Problem: Rendering an Object with setting own transformations](https://discourse.vtk.org/t/problem-rendering-an-object-with-setting-own-transformations/1470)

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**Author:** [@idontknow](https://discourse.vtk.org/u/idontknow)\
**Replies:** 0\
**Last updated:** [August 1, 2019, 3:04pm UTC](https://discourse.vtk.org/t/problem-rendering-an-object-with-setting-own-transformations/1470 "2019-08-01T15:04:29Z")

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Hi, for my AR project i want to render a Cube. The position of the cube is dependent of perspective where I look at the marker. The cube should overlay the marker when I look through the glasses. Currently the cube is …

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## [Is AR possible with an HTC Vive Pro?](https://discourse.vtk.org/t/is-ar-possible-with-an-htc-vive-pro/821)

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**Author:** [@Benjamin\_Navarro](https://discourse.vtk.org/u/Benjamin_Navarro)\
**Replies:** 10\
**Last updated:** [June 21, 2019, 3:31pm UTC](https://discourse.vtk.org/t/is-ar-possible-with-an-htc-vive-pro/821 "2019-06-21T15:31:02Z")

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Hello, While looking for a high level framework to create some simple virtual reality applications, I stumbled upon the OpenVR module of VTK. It looks very promising but since I have an HTC Vive Pro with two front came…

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