[vtk-developers] vtkOpenVR

[Adam Rankin]

Aaahhh linking is the magic key to enable the factory.

It helps a lot! Slicer is using the ctkVtkAbstractView classes and so is creating a vtkRenderWindow. I will test this out today.

Thanks for these classes, it’s very exciting to leap into VR so quickly.

Adam


From: Ken Martin [mailto:ken.martin at kitware.com]
Sent: Friday, May 27, 2016 10:51 AM
To: Adam Rankin <arankin at robarts.ca<mailto:arankin at robarts.ca>>
Cc: vtk-developers at vtk.org<mailto:vtk-developers at vtk.org>
Subject: Re: [vtk-developers] vtkOpenVR

I believe the factory mechanism will replace any instantiations of vtkRenderWindow with vtkOpenVRRenderWindow if it is linked into the executable. From what I have seen that is the trick. The executable has to be linked against the vtkOpenVR module for the autoinit to work.

Now for Slicer I have no idea how they create their RenderWindow. If they are explicitly creating a subclass of vtkRenderWindow then the factory code will not work because it is targeted at the generic vtkRenderWindow level. A slicer person could maybe tell you more (or digging through the code).  I think slicer may also open multiple renderwindows, for the OpenVR stuff I think you would really only want to have one window. etc.

Hope that helps!



On Wed, May 25, 2016 at 8:38 PM, Adam Rankin <arankin at robarts.ca<mailto:arankin at robarts.ca>> wrote:
Hello all,

I have succeeded in replicating Ken Martin’s VTK master build with the drop-in replacement classes for outputting to an OpenVR device.

I am looking to build 3D Slicer using this VTK build, and am trying to understand the autoinit system, so that the factory implementation for these classes kicks in.

What I can’t find is where is the location where the list of classes to be autoinit’d is defined. I’ve found the dependency hierarchy traversal in vtkModuleMacros.cmake, but I can’t figure out how to add the vtkOpenVR module.

Would anyone be able to point me in the right direction?

Cheers and thanks!
Adam

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