OpenXR/OpenVR (virtual reality support)

[mr_guy99493]

Do you imagine it will be straightforward to add tools for use within the VR view?
Ie, open a sketch and pull a rectangle from some pallette before drawing and constraining as usual?
Or will this just be for viewing models?

[kwahoo]

My initial idea is to expose VR events to Python and then create some kind of Python shim between VR navigation/picking/view and standard FreeCAD tools.
Eg. you are pressing a trigger when a controller is near an 3D object, and FreeCAD opens a widget above the controller gizmo. The widget would contain info about the object and editable fields. If object is draggable (eg. a sketch's point) the controller should be able to drag the object.

Edit, this may be useful

phpBB [video]

and this https://github.com/belab/widgetTo3dTexture

[Kunda1]

That would be so awesome!

[openfablab]

I think sketching can be done with some device like pen and auto recognition of geometric features and numbers. And also with voice commands.

I imagine transparent rectangle situated where real user table is. When model face is selected for sketching, it is aligned to table.

What we would really miss in VR is feeling of tactile feedback from things we touch.

[kwahoo]

I think sketching can be done with some device like pen and auto recognition of geometric features and numbers. And also with voice commands.

There is no need for an additional device. Standard motion controllers are precise enough.

phpBB [video]

I'm afraid that auto recognition and voice command would be slow and unreliable. Also a lot of code to write. Tilt brush style menus are convenient and reliable.

What we would really miss in VR is feeling of tactile feedback from things we touch.

Not really, a human brain is quite easy to cheat. If you see object collision, you think it really happened, unless you move the hand too far. This works similarly to mirror therapy.

[kwahoo]

Small performance update.

The Linkstage3 branch rendering is noticeable faster than the main one. I noticed it could run even 3x faster on my hardware. So, for testing I applied the VR patches on top of the Linkstage3.
An improvement is clearly visible. Running two render targets 2016x2240 pixels and MSAAx8 antialiasing, I got about 7ms frametime for medium detailed engine model, and 37ms for very fine detailed Mars Rover model. The hardware is Radeon 5700XT and Ryzen 1700.

[HakanSeven12]

+1 nice job

[Kunda1]

That is so cool to hear. Have you told realthunder ?

pinged by pinger macro

[realthunder]

That's awesome. You know I started using FreeCAD because I want to build my own AR device. I still believe that dream will come to a full circle one day. I am currently refactoring the rendering part to try to catch up with modern graphics. Maybe soon we'll be able to walk inside a FC project like some kind of game.

[kwahoo]

Maybe soon we'll be able to walk inside a FC project like some kind of game.

Do you mean mixed reality? Because in VR room scale locomotion does work for a while. That's why my test project is a simple room Fcstd Video

There is not collision detection, but I fell it would be more distracting than useful.