How to receive camera position data from disguise’s renderstream

General TouchDesigner Discussion
1

Hi,

How can I receive camera position data from disguise? I can exchange video using renderstream, but I don’t know how to receive position data.

2

It’s available as a python member in the RenderStream In CHOP. .cameraTransform and .projection.
You can assign them to the Pre Transform page’s Matrix transform parameter in COMPs

3

I’m sorry. I don’t understand the meaning of “It’s available as a python member in the RenderStream In CHOP.” Is it possible to make an example project file that can actually receive it?

4

Find the Python docs for Renderstream CHOP by clicking the blue/yellow question mark top left of its parameter window: renderstreaminCHOP Class - Derivative

suppose your Renderstream CHOP is called renderstream1:

In your Camera COMP, set the ‘Xform Matrix/CHOP/DAT’ parameter in expression mode (blue box) and then type this Python expression in it:
op("renderstream1").cameraTransform

set your Camera COMP ‘Projection’ to ‘Custom Projection Matrix’, then set the ‘Proj Matrix/CHOP/DAT’ parameter also to expression mode(blue box) and type this Python expression:
op("renderstream1").projection

5

I understood. Thank you very much. I will try it.

6

It was solved. Thank you very much.

7

Thanks for the deeper explanation @nettoyeur! We’re working on getting a sample project out as well.