Dear experts,
I have a 3D domain in the form of a tube (see the following figure). I would like to know if there is a way to extract the outer boundary of my tube and show it in the form of a rectangular 2D surface. This will help a lot in demonstrating my results.
Hi @mwestphal
Thanks for the quick response. Here is a sketch of what I would like to do (sorry for the awful drawing).
You are looking for a Silhouette filter, sadly none have been integrated in ParaView yet. You can find an (old) discussion about it here: [Paraview] Contribution : Silhouette edges filter
Indeed, very sad. Thank you anyway.
It just needs to be exposed in ParaView? I see https://vtk.org/doc/nightly/html/classvtkPolyDataSilhouette.html. If yes, @cory.quammen would you like me to do that?
Correct me if I am wrong, but this looks like you want to unwrap the cylinder, i.e., cut it down its length and then flatten it out.
Maybe ? I’m not entirely sure.
@spyridon97 my understanding is that this filter needs access to the camera, which ParaView cant provide.
Yes exactly. I managed to do it by using the calculator and transforming the coordinates of the tube outer surface into a rectangular plane.
Hi @mohsen.rock,
In this post I explain my steps whenever I need to unwrap cylinder. Maybe it is of use to you too.
Kind regards,
Roland
