How to use indiemark through vive mars to UE5.1

loooovato

We connect indiemark through Htc Vive MARs rover usb,then the mars hub have a gear wheel icon under the rover icon.So whats the next step in UE? We have already connect Mars livelink in Ue,and pitch roll ect. available.
How to set focal length and focus distance?

AndyJarosz

loooovato
Create a lens blueprint in UE, and then in your cine camera add both a Lens component and LiveLink component. Select the Mars and assign the lens file for both.
Then open the lens blueprint and do your calibrations as normal.
Make sure you have enabled the Lens Calibrator and LiveLinkCamera plugins!

loooovato

AndyJarosz But we test the process in UE4.27 and 5.03.It not work in 5.1 ,cuz the livelinkcontroller in 5.1 is divided to livelinkcontroller and lens file, and the live link data with fiz can't automaticly filled in calibration.

AndyJarosz

loooovato I will try and record a video today for you

virtualHC

Hello,

I'm also trying to get the Indiemark 2 to work using the Mars system. Is your Unreal plugin needed for this? I can't find a way of getting the data from the Mars LiveLink stream to control Focus. My camera is already setup for positional tracking with the Mars. I'm trying to follow your instructions but I'm getting a bit lost where you say "select the Mars and assign the lens file for both". Did you mean the LiveLink components on the camera? I already have a Lens file made and assigned to the LiveLink components and the Lens component but how do I map the Indiemark data to drive Focus? I also have a FIZ Virtual Subject and I'm guessing in that Bluerint I have to feed the data from the Indiemark, but again, not sure how to extract it from the Rover's data.

virtualHC

Ah! I got it. I'm able to get the data from evaluating the LiveLink frame from the Mars Rover. It is coming out from the Focal Length pin.

AndyJarosz

virtualHC You can do that, but there is an easier way that doesn't require blueprints: https://vive-mars.notion.site/Applying-Lens-File-to-CineCameraActor-0bebd239ba5d437d963df26148ad1df3

virtualHC

AndyJarosz Thank you! I wasn’t aware of that documentation. If you have more than one Indiemark encoder, how do you select the functionality? For example one for focus and the other for aperture.

AndyJarosz

virtualHC The port you plug them into determines what they control

virtualHC

AndyJarosz Ah, yes. Thank you again. I can see it now in the Mars Base Camp site. I keep forgetting to check this site. There's no mention of the port specifics for lens encoders in their main documentation.

virtualHC

AndyJarosz I'm having trouble getting the encoder to work properly with the suggested setup explained in the Mars site you suggested https://vive-mars.notion.site/Applying-Lens-File-to-CineCameraActor-0bebd239ba5d437d963df26148ad1df3

I can see the raw encoder data coming in when enabling the LiveLink frame data but when I try to do the focus mapping in the Lens file it doesn't work properly. It's as if there was some sort of looping of the data so after I enter a new point in the Focus graph, the raw fiz for focus shows the previous point I entered. For example, if I first set the encoder to zero, I then add a new point in the focus graph and assign the raw encoder value to 60cm (the first value of my lens) then when I move to the next focus stop, the raw encoder input now reads 60 instead of the actual raw value. Would you have any idea of what's going on? I double checked and I have everything setup as in the documentation. I'm using Unreal Engine 5.1, added the LiveLink controller for the Mars tracker and a Lens component.