How to display external 3D measurements (length, contours)

Hi,
I’m working on a project where I perform measurements on a 3D object (mesh generated from a segmentation of a CT scan). These measurements are made using an in-house software and include both length (point-to-point) distances and freeform contours.

These measurements are not done in image pixel coordinates - they are saved in real-world 3D space (patient coordinates). I now want to visualize these measurements in the OHIF viewer, similar to the ones performed in this viewer.

Is there a recommended way to import and display them?

Any guidance or examples would be extremely helpful.

Thanks