Precision of LoGetCameraPosition and LoGetSelfData

[Wyverex]

Hi,

I'm currently exporting data from both `LoGetCameraPosition` and `LoGetSelfData` to calculate the camera position within the cockpit.

    local selfData = LoGetSelfData()
    if selfData ~= nil then
        local cameraPos = LoGetCameraPosition()
        if cameraPos ~= nil and cameraPos.p ~= nil then
            local toSend =
            {
                pos = selfData.Position,
                h = selfData.Heading,
                p = selfData.Pitch,
                b = selfData.Bank,
                c = cameraPos,
                t = socket.gettime()
            }
            Ivy.sendCommand("cam", toSend)
        end
    end

On the receiving end, I calculate a quaternion from the rotation data and transform the camera position relative to the aircraft position. This generally works totally fine and I get correct results as long as the aircraft is standing still.

However, in flight, my results vary by up to 0.6m when flying at 160 km/h for example. These two exports show such a difference along the X axis (which points forward in DCS).

[2023-03-29 19:53:39.313] [IvyVR] [info] cam_ac (3.015137387800653, 0.3236163383971928, -0.0058042729454039765)
[2023-03-29 19:54:12.014] [IvyVR] [info] cam_ac (2.416017720146929, 0.23703545435031226, -0.02618762237694683)

(Note that my relative camera position didn't change except for minute movements of my head which is reflected in the slight differences along the other axes)

A likely explanation would be that the results of selfData and cameraPos are from two different points in time between which the aircraft has already moved a bit further, which is why there's a gap in between them. I export both within the same tick though, so my assumption was that the data should be internally consistent.

Does an export script run on a different thread which means that there's a sufficient time gap between LoGetSelfData and LoGetCameraPosition to give results from different game ticks?

Is there a way I can get consistent results?

Edited March 29, 2023 by Wyverex

[futurecpit]

I'm having a similar problem.  Did you ever find a solution?

[Shaftoe62]

I also have a question about LoGetCameraPosition.

How can I get the camera rotation from left to right?

Does one of you know the answer to that?