How to create Surfaces on cadaveric-based Microscribe models. (Irregular surfaces)

Craig_Clayton · February 8, 2016, 10:20pm

I need to be able to create surfaces on complex frames such as the one pictured in the photo. I am a student researcher currently creating 3D models of nerve fibers in the human mouth. All my data is based on cadaveric specimens and recorded on Rhino using a Microscribe. Creating the wire mesh from Microscribe data points has been the easiest part of this process, but for weeks I have not been successful in creating surfaces on the irregular shapes of the human mouth, e.g. the tongue and mandible, and am now at wits end.

Will you please help me resolve this problem?

Thank you!

pascal · February 8, 2016, 10:23pm

Hi Craig- can you post a file with your curves? The quick and easy and maybe good enough way out here is to use Patch on all of the curves at once.

-Pascal

Craig_Clayton · February 8, 2016, 10:25pm

Sure.

I hope this works! I am new to Rhino have not been able to find the solution in the user manuals or on YouTube.

Thank you Pascal,

-Craig

trigeminal2494.3dm (357.0 KB)

pascal · February 8, 2016, 10:30pm

See how this works for you - Patch did not trim the surface, I used Trim afterwards, selecting all the preimeter curves (SelChain) as the cutters.

trigeminal2494_PG.3dm (574.7 KB)

-Pascal

Craig_Clayton · February 10, 2016, 9:15pm

This is exactly what I was looking for! How can I do this? I have a lot more surfaces just like it that I need to create.

Craig_Clayton · February 10, 2016, 9:18pm

@pascal

Craig_Clayton · February 10, 2016, 10:33pm

I effectively used patch to create a surface, but now I need to figure out how you snapped the mesh surface to the polylines.

pascal · February 10, 2016, 11:34pm

Hi Craig - I’ll be able to get back to you on this more usefully in a couple of days - I am out of the office a bit this week.

-Pascal

Craig_Clayton · February 12, 2016, 10:21pm

Thank you! I will be back in my lab on Tuesday and will message you then. Have a nice weekend! @pascal

pascal · February 12, 2016, 10:28pm

@Craig_Clayton - this clip might be enough to get you started -

-Pascal

Craig_Clayton · February 16, 2016, 9:43pm

Brilliant @pascal! Thank you!

Tanner_Gray · April 4, 2016, 10:22pm

I cannot figure out why, but the trim tool is not working as you illustrate in the video you sent me. I follow the video exactly with the SelChain tool step, but when it comes to selecting the surface or object for editing Rhino does not recognize that I am clicking on the newly created surface. Any ideas?

Craig_Clayton · April 4, 2016, 10:34pm

Thanks Tanner. I did not realize you were still
Logged on