How to setup camera from a view matrix

Questions
1

I am working on a project where we are using OpenCV to compute a pose. From the pose we get in OpenCV have I created the view matrix. I would now like to use add some 3D model(s) in BabylonJS but are a bit lost on how I can setup a camera from a view matrix.

I would also like to dynamic update the camera when a new pose arrive.

2

your view matrix contains position and rotation which you can use directly on your camera.
What you can do (instead of forcing the camera’s view matrix) is construct a babylon matrix from the view matrix and decompose (Matrix | Babylon.js Documentation) it to the camera’s position and rotation(Quaternion). this will update the camera’s transformation according to the matrix provided

5 Likes
3

Thanks for the quick answer!
It was what I was looking for.

I forgot to do a cast from the base Camera to FreeCamera, so poor Typescript wasn’t to much help.