make_mesh_watertight grows the mesh

[gattia]

make_mesh_watertight grows the mesh

[fwilliams]

I think this is just a property of the underlying algorithm which is described here: https://arxiv.org/abs/1802.01698

One hack that might work here is to project each vertex on the blue mesh to it's closest point on the white mesh. You can use pcu.closest_points_on_mesh (Docs and examples here) to do this.

[gattia]

Thanks for the quick reply. I did look briefly at the paper, and they do say they project the results back onto the original mesh, but clearly not fully.

Thats a great suggestions. Im guessing using something like this:

https://www.fwilliams.info/point-cloud-utils/sections/closest_point_on_mesh/#finding-closest-points-between-point-clouds-and-meshes

to get the points on the original mesh continuously based on the barycentric coords instead of at discrete locations.